Merge branch '2.7.x'

buildSrc/src/main/java/org/springframework/boot/build/context/properties/DocumentConfigurationProperties.java

@@ -174,6 +174,7 @@ public class DocumentConfigurationProperties extends DefaultTask {
 	}
 
 	private void webPrefixes(Config prefix) {
+		prefix.accept("spring.graphql");
 		prefix.accept("spring.hateoas");
 		prefix.accept("spring.http");
 		prefix.accept("spring.servlet");

spring-boot-project/spring-boot-actuator-autoconfigure/build.gradle

@@ -127,6 +127,7 @@ dependencies {
 	optional("org.springframework.data:spring-data-elasticsearch") {
 		exclude group: "commons-logging", module: "commons-logging"
 	}
+	optional("org.springframework.graphql:spring-graphql")
 	optional("org.springframework.integration:spring-integration-core")
 	optional("org.springframework.kafka:spring-kafka")
 	optional("org.springframework.security:spring-security-config")

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/metrics/MetricsProperties.java

@@ -62,6 +62,8 @@ public class MetricsProperties {
 
 	private final Data data = new Data();
 
+	private final Graphql graphql = new Graphql();
+
 	private final System system = new System();
 
 	private final Distribution distribution = new Distribution();
@@ -90,6 +92,10 @@ public class MetricsProperties {
 		return this.data;
 	}
 
+	public Graphql getGraphql() {
+		return this.graphql;
+	}
+
 	public System getSystem() {
 		return this.system;
 	}
@@ -268,6 +274,20 @@ public class MetricsProperties {
 
 	}
 
+	public static class Graphql {
+
+		/**
+		 * Auto-timed queries settings.
+		 */
+		@NestedConfigurationProperty
+		private final AutoTimeProperties autotime = new AutoTimeProperties();
+
+		public AutoTimeProperties getAutotime() {
+			return this.autotime;
+		}
+
+	}
+
 	public static class System {
 
 		private final Diskspace diskspace = new Diskspace();

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/java/org/springframework/boot/actuate/autoconfigure/metrics/graphql/GraphQlMetricsAutoConfiguration.java

@@ -0,0 +1,70 @@
+/*
+ * Copyright 2020-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.actuate.autoconfigure.metrics.graphql;
+
+import java.util.stream.Collectors;
+
+import graphql.GraphQL;
+import io.micrometer.core.instrument.MeterRegistry;
+
+import org.springframework.beans.factory.ObjectProvider;
+import org.springframework.boot.actuate.autoconfigure.metrics.CompositeMeterRegistryAutoConfiguration;
+import org.springframework.boot.actuate.autoconfigure.metrics.MetricsAutoConfiguration;
+import org.springframework.boot.actuate.autoconfigure.metrics.MetricsProperties;
+import org.springframework.boot.actuate.autoconfigure.metrics.export.simple.SimpleMetricsExportAutoConfiguration;
+import org.springframework.boot.actuate.metrics.graphql.DefaultGraphQlTagsProvider;
+import org.springframework.boot.actuate.metrics.graphql.GraphQlMetricsInstrumentation;
+import org.springframework.boot.actuate.metrics.graphql.GraphQlTagsContributor;
+import org.springframework.boot.actuate.metrics.graphql.GraphQlTagsProvider;
+import org.springframework.boot.autoconfigure.AutoConfigureAfter;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.graphql.execution.GraphQlSource;
+
+/**
+ * {@link EnableAutoConfiguration Auto-configuration} for instrumentation of Spring
+ * GraphQL endpoints.
+ *
+ * @author Brian Clozel
+ * @since 2.7.0
+ */
+@Configuration(proxyBeanMethods = false)
+@AutoConfigureAfter({ MetricsAutoConfiguration.class, CompositeMeterRegistryAutoConfiguration.class,
+		SimpleMetricsExportAutoConfiguration.class })
+@ConditionalOnBean(MeterRegistry.class)
+@ConditionalOnClass({ GraphQL.class, GraphQlSource.class })
+@EnableConfigurationProperties(MetricsProperties.class)
+public class GraphQlMetricsAutoConfiguration {
+
+	@Bean
+	@ConditionalOnMissingBean(GraphQlTagsProvider.class)
+	public DefaultGraphQlTagsProvider graphQlTagsProvider(ObjectProvider<GraphQlTagsContributor> contributors) {
+		return new DefaultGraphQlTagsProvider(contributors.orderedStream().collect(Collectors.toList()));
+	}
+
+	@Bean
+	public GraphQlMetricsInstrumentation graphQlMetricsInstrumentation(MeterRegistry meterRegistry,
+			GraphQlTagsProvider tagsProvider, MetricsProperties properties) {
+		return new GraphQlMetricsInstrumentation(meterRegistry, tagsProvider, properties.getGraphql().getAutotime());
+	}
+
+}

spring-boot-project/spring-boot-actuator-autoconfigure/src/main/resources/META-INF/spring.factories

@@ -67,6 +67,7 @@ org.springframework.boot.actuate.autoconfigure.metrics.export.simple.SimpleMetri
 org.springframework.boot.actuate.autoconfigure.metrics.export.stackdriver.StackdriverMetricsExportAutoConfiguration,\
 org.springframework.boot.actuate.autoconfigure.metrics.export.statsd.StatsdMetricsExportAutoConfiguration,\
 org.springframework.boot.actuate.autoconfigure.metrics.export.wavefront.WavefrontMetricsExportAutoConfiguration,\
+org.springframework.boot.actuate.autoconfigure.metrics.graphql.GraphQlMetricsAutoConfiguration,\
 org.springframework.boot.actuate.autoconfigure.metrics.integration.IntegrationMetricsAutoConfiguration,\
 org.springframework.boot.actuate.autoconfigure.metrics.jdbc.DataSourcePoolMetricsAutoConfiguration,\
 org.springframework.boot.actuate.autoconfigure.metrics.mongo.MongoMetricsAutoConfiguration,\

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/SpringApplicationHierarchyTests.java

@@ -32,6 +32,7 @@ import org.springframework.boot.autoconfigure.data.neo4j.Neo4jRepositoriesAutoCo
 import org.springframework.boot.autoconfigure.data.redis.RedisAutoConfiguration;
 import org.springframework.boot.autoconfigure.data.redis.RedisRepositoriesAutoConfiguration;
 import org.springframework.boot.autoconfigure.flyway.FlywayAutoConfiguration;
+import org.springframework.boot.autoconfigure.graphql.GraphQlAutoConfiguration;
 import org.springframework.boot.autoconfigure.neo4j.Neo4jAutoConfiguration;
 import org.springframework.boot.builder.SpringApplicationBuilder;
 import org.springframework.boot.test.util.ApplicationContextTestUtils;
@@ -69,7 +70,7 @@ class SpringApplicationHierarchyTests {
 	@Configuration
 	@EnableAutoConfiguration(exclude = { ElasticsearchDataAutoConfiguration.class,
 			ElasticsearchRepositoriesAutoConfiguration.class, CassandraAutoConfiguration.class,
-			CassandraDataAutoConfiguration.class, MongoDataAutoConfiguration.class,
+			CassandraDataAutoConfiguration.class, GraphQlAutoConfiguration.class, MongoDataAutoConfiguration.class,
 			MongoReactiveDataAutoConfiguration.class, Neo4jAutoConfiguration.class, Neo4jDataAutoConfiguration.class,
 			Neo4jRepositoriesAutoConfiguration.class, RedisAutoConfiguration.class,
 			RedisRepositoriesAutoConfiguration.class, FlywayAutoConfiguration.class, MetricsAutoConfiguration.class })
@@ -80,7 +81,7 @@ class SpringApplicationHierarchyTests {
 	@Configuration
 	@EnableAutoConfiguration(exclude = { ElasticsearchDataAutoConfiguration.class,
 			ElasticsearchRepositoriesAutoConfiguration.class, CassandraAutoConfiguration.class,
-			CassandraDataAutoConfiguration.class, MongoDataAutoConfiguration.class,
+			CassandraDataAutoConfiguration.class, GraphQlAutoConfiguration.class, MongoDataAutoConfiguration.class,
 			MongoReactiveDataAutoConfiguration.class, Neo4jAutoConfiguration.class, Neo4jDataAutoConfiguration.class,
 			Neo4jRepositoriesAutoConfiguration.class, RedisAutoConfiguration.class,
 			RedisRepositoriesAutoConfiguration.class, FlywayAutoConfiguration.class, MetricsAutoConfiguration.class })

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/integrationtest/WebEndpointsAutoConfigurationIntegrationTests.java

@@ -34,6 +34,7 @@ import org.springframework.boot.autoconfigure.data.redis.RedisAutoConfiguration;
 import org.springframework.boot.autoconfigure.data.redis.RedisRepositoriesAutoConfiguration;
 import org.springframework.boot.autoconfigure.data.rest.RepositoryRestMvcAutoConfiguration;
 import org.springframework.boot.autoconfigure.flyway.FlywayAutoConfiguration;
+import org.springframework.boot.autoconfigure.graphql.GraphQlAutoConfiguration;
 import org.springframework.boot.autoconfigure.hazelcast.HazelcastAutoConfiguration;
 import org.springframework.boot.autoconfigure.liquibase.LiquibaseAutoConfiguration;
 import org.springframework.boot.autoconfigure.mongo.MongoAutoConfiguration;
@@ -75,12 +76,12 @@ class WebEndpointsAutoConfigurationIntegrationTests {
 	}
 
 	@EnableAutoConfiguration(exclude = { FlywayAutoConfiguration.class, LiquibaseAutoConfiguration.class,
-			CassandraAutoConfiguration.class, CassandraDataAutoConfiguration.class, Neo4jDataAutoConfiguration.class,
-			Neo4jRepositoriesAutoConfiguration.class, MongoAutoConfiguration.class, MongoDataAutoConfiguration.class,
-			MongoReactiveAutoConfiguration.class, MongoReactiveDataAutoConfiguration.class,
-			RepositoryRestMvcAutoConfiguration.class, HazelcastAutoConfiguration.class,
-			ElasticsearchDataAutoConfiguration.class, SolrAutoConfiguration.class, RedisAutoConfiguration.class,
-			RedisRepositoriesAutoConfiguration.class, MetricsAutoConfiguration.class })
+			CassandraAutoConfiguration.class, CassandraDataAutoConfiguration.class, GraphQlAutoConfiguration.class,
+			Neo4jDataAutoConfiguration.class, Neo4jRepositoriesAutoConfiguration.class, MongoAutoConfiguration.class,
+			MongoDataAutoConfiguration.class, MongoReactiveAutoConfiguration.class,
+			MongoReactiveDataAutoConfiguration.class, RepositoryRestMvcAutoConfiguration.class,
+			HazelcastAutoConfiguration.class, ElasticsearchDataAutoConfiguration.class, SolrAutoConfiguration.class,
+			RedisAutoConfiguration.class, RedisRepositoriesAutoConfiguration.class, MetricsAutoConfiguration.class })
 	@SpringBootConfiguration
 	static class WebEndpointTestApplication {
 

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/java/org/springframework/boot/actuate/autoconfigure/metrics/graphql/GraphQlMetricsAutoConfigurationTests.java

@@ -0,0 +1,98 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.actuate.autoconfigure.metrics.graphql;
+
+import graphql.ExecutionResult;
+import graphql.GraphQLError;
+import graphql.execution.instrumentation.parameters.InstrumentationExecutionParameters;
+import graphql.execution.instrumentation.parameters.InstrumentationFieldFetchParameters;
+import graphql.schema.DataFetcher;
+import io.micrometer.core.instrument.Tag;
+import org.junit.jupiter.api.Test;
+
+import org.springframework.boot.actuate.autoconfigure.metrics.test.MetricsRun;
+import org.springframework.boot.actuate.metrics.graphql.DefaultGraphQlTagsProvider;
+import org.springframework.boot.actuate.metrics.graphql.GraphQlMetricsInstrumentation;
+import org.springframework.boot.actuate.metrics.graphql.GraphQlTagsProvider;
+import org.springframework.boot.autoconfigure.AutoConfigurations;
+import org.springframework.boot.test.context.runner.ApplicationContextRunner;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for {@link GraphQlMetricsAutoConfiguration}.
+ *
+ * @author Brian Clozel
+ */
+class GraphQlMetricsAutoConfigurationTests {
+
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner().with(MetricsRun.simple())
+			.withConfiguration(AutoConfigurations.of(GraphQlMetricsAutoConfiguration.class));
+
+	@Test
+	void backsOffWhenMeterRegistryIsMissing() {
+		new ApplicationContextRunner().withConfiguration(AutoConfigurations.of(GraphQlMetricsAutoConfiguration.class))
+				.run((context) -> assertThat(context).doesNotHaveBean(DefaultGraphQlTagsProvider.class)
+						.doesNotHaveBean(GraphQlMetricsInstrumentation.class));
+	}
+
+	@Test
+	void definesTagsProviderAndInstrumentationWhenMeterRegistryIsPresent() {
+		this.contextRunner.run((context) -> assertThat(context).hasSingleBean(DefaultGraphQlTagsProvider.class)
+				.hasSingleBean(GraphQlMetricsInstrumentation.class));
+	}
+
+	@Test
+	void tagsProviderBacksOffIfAlreadyPresent() {
+		this.contextRunner.withUserConfiguration(TagsProviderConfiguration.class).run((context) -> assertThat(context)
+				.doesNotHaveBean(DefaultGraphQlTagsProvider.class).hasSingleBean(TestGraphQlTagsProvider.class));
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	static class TagsProviderConfiguration {
+
+		@Bean
+		TestGraphQlTagsProvider tagsProvider() {
+			return new TestGraphQlTagsProvider();
+		}
+
+	}
+
+	static class TestGraphQlTagsProvider implements GraphQlTagsProvider {
+
+		@Override
+		public Iterable<Tag> getExecutionTags(InstrumentationExecutionParameters parameters, ExecutionResult result,
+				Throwable exception) {
+			return null;
+		}
+
+		@Override
+		public Iterable<Tag> getErrorTags(InstrumentationExecutionParameters parameters, GraphQLError error) {
+			return null;
+		}
+
+		@Override
+		public Iterable<Tag> getDataFetchingTags(DataFetcher<?> dataFetcher,
+				InstrumentationFieldFetchParameters parameters, Throwable exception) {
+			return null;
+		}
+
+	}
+
+}

spring-boot-project/spring-boot-actuator/build.gradle

@@ -77,6 +77,7 @@ dependencies {
 	optional("org.springframework.data:spring-data-mongodb")
 	optional("org.springframework.data:spring-data-redis")
 	optional("org.springframework.data:spring-data-rest-webmvc")
+	optional("org.springframework.graphql:spring-graphql")
 	optional("org.springframework.integration:spring-integration-core")
 	optional("org.springframework.security:spring-security-core")
 	optional("org.springframework.security:spring-security-web")

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/metrics/graphql/DefaultGraphQlTagsProvider.java

@@ -0,0 +1,77 @@
+/*
+ * Copyright 2020-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.actuate.metrics.graphql;
+
+import java.util.Collections;
+import java.util.List;
+
+import graphql.ExecutionResult;
+import graphql.GraphQLError;
+import graphql.execution.instrumentation.parameters.InstrumentationExecutionParameters;
+import graphql.execution.instrumentation.parameters.InstrumentationFieldFetchParameters;
+import graphql.schema.DataFetcher;
+import io.micrometer.core.instrument.Tag;
+import io.micrometer.core.instrument.Tags;
+
+/**
+ * Default implementation for {@link GraphQlTagsProvider}.
+ *
+ * @author Brian Clozel
+ * @since 2.7.0
+ */
+public class DefaultGraphQlTagsProvider implements GraphQlTagsProvider {
+
+	private final List<GraphQlTagsContributor> contributors;
+
+	public DefaultGraphQlTagsProvider(List<GraphQlTagsContributor> contributors) {
+		this.contributors = contributors;
+	}
+
+	public DefaultGraphQlTagsProvider() {
+		this(Collections.emptyList());
+	}
+
+	@Override
+	public Iterable<Tag> getExecutionTags(InstrumentationExecutionParameters parameters, ExecutionResult result,
+			Throwable exception) {
+		Tags tags = Tags.of(GraphQlTags.executionOutcome(result, exception));
+		for (GraphQlTagsContributor contributor : this.contributors) {
+			tags = tags.and(contributor.getExecutionTags(parameters, result, exception));
+		}
+		return tags;
+	}
+
+	@Override
+	public Iterable<Tag> getErrorTags(InstrumentationExecutionParameters parameters, GraphQLError error) {
+		Tags tags = Tags.of(GraphQlTags.errorType(error), GraphQlTags.errorPath(error));
+		for (GraphQlTagsContributor contributor : this.contributors) {
+			tags = tags.and(contributor.getErrorTags(parameters, error));
+		}
+		return tags;
+	}
+
+	@Override
+	public Iterable<Tag> getDataFetchingTags(DataFetcher<?> dataFetcher, InstrumentationFieldFetchParameters parameters,
+			Throwable exception) {
+		Tags tags = Tags.of(GraphQlTags.dataFetchingOutcome(exception), GraphQlTags.dataFetchingPath(parameters));
+		for (GraphQlTagsContributor contributor : this.contributors) {
+			tags = tags.and(contributor.getDataFetchingTags(dataFetcher, parameters, exception));
+		}
+		return tags;
+	}
+
+}

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/metrics/graphql/GraphQlMetricsInstrumentation.java

@@ -0,0 +1,160 @@
+/*
+ * Copyright 2020-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.actuate.metrics.graphql;
+
+import java.util.concurrent.CompletionStage;
+import java.util.concurrent.atomic.AtomicLong;
+
+import graphql.ExecutionResult;
+import graphql.execution.instrumentation.InstrumentationContext;
+import graphql.execution.instrumentation.InstrumentationState;
+import graphql.execution.instrumentation.SimpleInstrumentation;
+import graphql.execution.instrumentation.SimpleInstrumentationContext;
+import graphql.execution.instrumentation.parameters.InstrumentationExecutionParameters;
+import graphql.execution.instrumentation.parameters.InstrumentationFieldFetchParameters;
+import graphql.schema.DataFetcher;
+import io.micrometer.core.instrument.DistributionSummary;
+import io.micrometer.core.instrument.MeterRegistry;
+import io.micrometer.core.instrument.Tag;
+import io.micrometer.core.instrument.Timer;
+
+import org.springframework.boot.actuate.metrics.AutoTimer;
+import org.springframework.lang.Nullable;
+
+public class GraphQlMetricsInstrumentation extends SimpleInstrumentation {
+
+	private final MeterRegistry registry;
+
+	private final GraphQlTagsProvider tagsProvider;
+
+	private final AutoTimer autoTimer;
+
+	private final DistributionSummary dataFetchingSummary;
+
+	public GraphQlMetricsInstrumentation(MeterRegistry registry, GraphQlTagsProvider tagsProvider,
+			AutoTimer autoTimer) {
+		this.registry = registry;
+		this.tagsProvider = tagsProvider;
+		this.autoTimer = autoTimer;
+		this.dataFetchingSummary = DistributionSummary.builder("graphql.request.datafetch.count").baseUnit("calls")
+				.description("Count of DataFetcher calls per request.").register(this.registry);
+	}
+
+	@Override
+	public InstrumentationState createState() {
+		return new RequestMetricsInstrumentationState(this.autoTimer, this.registry);
+	}
+
+	@Override
+	public InstrumentationContext<ExecutionResult> beginExecution(InstrumentationExecutionParameters parameters) {
+		if (this.autoTimer.isEnabled()) {
+			RequestMetricsInstrumentationState state = parameters.getInstrumentationState();
+			state.startTimer();
+			return new SimpleInstrumentationContext<ExecutionResult>() {
+				@Override
+				public void onCompleted(ExecutionResult result, Throwable exc) {
+					Iterable<Tag> tags = GraphQlMetricsInstrumentation.this.tagsProvider.getExecutionTags(parameters,
+							result, exc);
+					state.tags(tags).stopTimer();
+					if (!result.getErrors().isEmpty()) {
+						result.getErrors()
+								.forEach((error) -> GraphQlMetricsInstrumentation.this.registry.counter("graphql.error",
+										GraphQlMetricsInstrumentation.this.tagsProvider.getErrorTags(parameters, error))
+										.increment());
+					}
+					GraphQlMetricsInstrumentation.this.dataFetchingSummary.record(state.getDataFetchingCount());
+				}
+			};
+		}
+		return super.beginExecution(parameters);
+	}
+
+	@Override
+	public DataFetcher<?> instrumentDataFetcher(DataFetcher<?> dataFetcher,
+			InstrumentationFieldFetchParameters parameters) {
+		if (this.autoTimer.isEnabled() && !parameters.isTrivialDataFetcher()) {
+			return (environment) -> {
+				Timer.Sample sample = Timer.start(this.registry);
+				try {
+					Object value = dataFetcher.get(environment);
+					if (value instanceof CompletionStage<?>) {
+						CompletionStage<?> completion = (CompletionStage<?>) value;
+						return completion.whenComplete(
+								(result, error) -> recordDataFetcherMetric(sample, dataFetcher, parameters, error));
+					}
+					else {
+						recordDataFetcherMetric(sample, dataFetcher, parameters, null);
+						return value;
+					}
+				}
+				catch (Throwable throwable) {
+					recordDataFetcherMetric(sample, dataFetcher, parameters, throwable);
+					throw throwable;
+				}
+			};
+		}
+		return super.instrumentDataFetcher(dataFetcher, parameters);
+	}
+
+	private void recordDataFetcherMetric(Timer.Sample sample, DataFetcher<?> dataFetcher,
+			InstrumentationFieldFetchParameters parameters, @Nullable Throwable throwable) {
+		Timer.Builder timer = this.autoTimer.builder("graphql.datafetcher");
+		timer.tags(this.tagsProvider.getDataFetchingTags(dataFetcher, parameters, throwable));
+		sample.stop(timer.register(this.registry));
+		RequestMetricsInstrumentationState state = parameters.getInstrumentationState();
+		state.incrementDataFetchingCount();
+	}
+
+	static class RequestMetricsInstrumentationState implements InstrumentationState {
+
+		private final MeterRegistry registry;
+
+		private final Timer.Builder timer;
+
+		private Timer.Sample sample;
+
+		private AtomicLong dataFetchingCount = new AtomicLong(0L);
+
+		RequestMetricsInstrumentationState(AutoTimer autoTimer, MeterRegistry registry) {
+			this.timer = autoTimer.builder("graphql.request");
+			this.registry = registry;
+		}
+
+		RequestMetricsInstrumentationState tags(Iterable<Tag> tags) {
+			this.timer.tags(tags);
+			return this;
+		}
+
+		void startTimer() {
+			this.sample = Timer.start(this.registry);
+		}
+
+		void stopTimer() {
+			this.sample.stop(this.timer.register(this.registry));
+		}
+
+		void incrementDataFetchingCount() {
+			this.dataFetchingCount.incrementAndGet();
+		}
+
+		long getDataFetchingCount() {
+			return this.dataFetchingCount.get();
+		}
+
+	}
+
+}

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/metrics/graphql/GraphQlTags.java

@@ -0,0 +1,102 @@
+/*
+ * Copyright 2020-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.actuate.metrics.graphql;
+
+import java.util.List;
+
+import graphql.ErrorClassification;
+import graphql.ErrorType;
+import graphql.ExecutionResult;
+import graphql.GraphQLError;
+import graphql.execution.ExecutionStepInfo;
+import graphql.execution.instrumentation.parameters.InstrumentationFieldFetchParameters;
+import graphql.schema.GraphQLObjectType;
+import io.micrometer.core.instrument.Tag;
+
+import org.springframework.lang.Nullable;
+import org.springframework.util.CollectionUtils;
+
+/**
+ * Factory methods for Tags associated with a GraphQL request.
+ *
+ * @author Brian Clozel
+ * @since 1.0.0
+ */
+public final class GraphQlTags {
+
+	private static final Tag OUTCOME_SUCCESS = Tag.of("outcome", "SUCCESS");
+
+	private static final Tag OUTCOME_ERROR = Tag.of("outcome", "ERROR");
+
+	private static final Tag UNKNOWN_ERRORTYPE = Tag.of("errorType", "UNKNOWN");
+
+	private GraphQlTags() {
+
+	}
+
+	public static Tag executionOutcome(ExecutionResult result, @Nullable Throwable exception) {
+		if (exception == null && result.getErrors().isEmpty()) {
+			return OUTCOME_SUCCESS;
+		}
+		else {
+			return OUTCOME_ERROR;
+		}
+	}
+
+	public static Tag errorType(GraphQLError error) {
+		ErrorClassification errorType = error.getErrorType();
+		if (errorType instanceof ErrorType) {
+			return Tag.of("errorType", ((ErrorType) errorType).name());
+		}
+		return UNKNOWN_ERRORTYPE;
+	}
+
+	public static Tag errorPath(GraphQLError error) {
+		StringBuilder builder = new StringBuilder();
+		List<Object> pathSegments = error.getPath();
+		if (!CollectionUtils.isEmpty(pathSegments)) {
+			builder.append('$');
+			for (Object segment : pathSegments) {
+				try {
+					int index = Integer.parseUnsignedInt(segment.toString());
+					builder.append("[*]");
+				}
+				catch (NumberFormatException exc) {
+					builder.append('.');
+					builder.append(segment);
+				}
+			}
+		}
+		return Tag.of("errorPath", builder.toString());
+	}
+
+	public static Tag dataFetchingOutcome(@Nullable Throwable exception) {
+		return (exception != null) ? OUTCOME_ERROR : OUTCOME_SUCCESS;
+	}
+
+	public static Tag dataFetchingPath(InstrumentationFieldFetchParameters parameters) {
+		ExecutionStepInfo executionStepInfo = parameters.getExecutionStepInfo();
+		StringBuilder dataFetchingType = new StringBuilder();
+		if (executionStepInfo.hasParent() && executionStepInfo.getParent().getType() instanceof GraphQLObjectType) {
+			dataFetchingType.append(((GraphQLObjectType) executionStepInfo.getParent().getType()).getName());
+			dataFetchingType.append('.');
+		}
+		dataFetchingType.append(executionStepInfo.getPath().getSegmentName());
+		return Tag.of("path", dataFetchingType.toString());
+	}
+
+}

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/metrics/graphql/GraphQlTagsContributor.java

@@ -0,0 +1,45 @@
+/*
+ * Copyright 2020-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.actuate.metrics.graphql;
+
+import graphql.ExecutionResult;
+import graphql.GraphQLError;
+import graphql.execution.instrumentation.parameters.InstrumentationExecutionParameters;
+import graphql.execution.instrumentation.parameters.InstrumentationFieldFetchParameters;
+import graphql.schema.DataFetcher;
+import io.micrometer.core.instrument.Tag;
+
+import org.springframework.lang.Nullable;
+
+/**
+ * A contributor of {@link Tag Tags} for Spring GraphQL-based request handling. Typically,
+ * used by a {@link GraphQlTagsProvider} to provide tags in addition to its defaults.
+ *
+ * @author Brian Clozel
+ * @since 2.7.0
+ */
+public interface GraphQlTagsContributor {
+
+	Iterable<Tag> getExecutionTags(InstrumentationExecutionParameters parameters, ExecutionResult result,
+			@Nullable Throwable exception);
+
+	Iterable<Tag> getErrorTags(InstrumentationExecutionParameters parameters, GraphQLError error);
+
+	Iterable<Tag> getDataFetchingTags(DataFetcher<?> dataFetcher, InstrumentationFieldFetchParameters parameters,
+			@Nullable Throwable exception);
+
+}

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/metrics/graphql/GraphQlTagsProvider.java

@@ -0,0 +1,44 @@
+/*
+ * Copyright 2020-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.actuate.metrics.graphql;
+
+import graphql.ExecutionResult;
+import graphql.GraphQLError;
+import graphql.execution.instrumentation.parameters.InstrumentationExecutionParameters;
+import graphql.execution.instrumentation.parameters.InstrumentationFieldFetchParameters;
+import graphql.schema.DataFetcher;
+import io.micrometer.core.instrument.Tag;
+
+import org.springframework.lang.Nullable;
+
+/**
+ * Provides {@link Tag Tags} for Spring GraphQL-based request handling.
+ *
+ * @author Brian Clozel
+ * @since 2.7.0
+ */
+public interface GraphQlTagsProvider {
+
+	Iterable<Tag> getExecutionTags(InstrumentationExecutionParameters parameters, ExecutionResult result,
+			@Nullable Throwable exception);
+
+	Iterable<Tag> getErrorTags(InstrumentationExecutionParameters parameters, GraphQLError error);
+
+	Iterable<Tag> getDataFetchingTags(DataFetcher<?> dataFetcher, InstrumentationFieldFetchParameters parameters,
+			@Nullable Throwable exception);
+
+}

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/metrics/graphql/package-info.java

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2020-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Provides instrumentation support for Spring GraphQL.
+ */
+package org.springframework.boot.actuate.metrics.graphql;

spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/metrics/graphql/GraphQlMetricsInstrumentationTests.java

@@ -0,0 +1,176 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.actuate.metrics.graphql;
+
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.CompletionStage;
+
+import graphql.ExecutionInput;
+import graphql.ExecutionResult;
+import graphql.ExecutionResultImpl;
+import graphql.execution.instrumentation.InstrumentationContext;
+import graphql.execution.instrumentation.InstrumentationState;
+import graphql.execution.instrumentation.parameters.InstrumentationExecutionParameters;
+import graphql.execution.instrumentation.parameters.InstrumentationFieldFetchParameters;
+import graphql.schema.DataFetcher;
+import graphql.schema.DataFetchingEnvironment;
+import graphql.schema.DataFetchingEnvironmentImpl;
+import graphql.schema.GraphQLSchema;
+import graphql.schema.idl.SchemaGenerator;
+import io.micrometer.core.instrument.DistributionSummary;
+import io.micrometer.core.instrument.MeterRegistry;
+import io.micrometer.core.instrument.MockClock;
+import io.micrometer.core.instrument.Timer;
+import io.micrometer.core.instrument.simple.SimpleConfig;
+import io.micrometer.core.instrument.simple.SimpleMeterRegistry;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.Test;
+
+import org.springframework.boot.actuate.metrics.AutoTimer;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatThrownBy;
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.BDDMockito.given;
+import static org.mockito.Mockito.mock;
+
+/**
+ * Tests for {@link GraphQlMetricsInstrumentation}.
+ *
+ * @author Brian Clozel
+ */
+class GraphQlMetricsInstrumentationTests {
+
+	private final ExecutionInput input = ExecutionInput.newExecutionInput("{greeting}").build();
+
+	private final GraphQLSchema schema = SchemaGenerator.createdMockedSchema("type Query { greeting: String }");
+
+	private MeterRegistry registry;
+
+	private GraphQlMetricsInstrumentation instrumentation;
+
+	private InstrumentationState state;
+
+	private InstrumentationExecutionParameters parameters;
+
+	@BeforeEach
+	void setup() {
+		this.registry = new SimpleMeterRegistry(SimpleConfig.DEFAULT, new MockClock());
+		this.instrumentation = new GraphQlMetricsInstrumentation(this.registry, mock(GraphQlTagsProvider.class),
+				AutoTimer.ENABLED);
+		this.state = this.instrumentation.createState();
+		this.parameters = new InstrumentationExecutionParameters(this.input, this.schema, this.state);
+	}
+
+	@Test
+	void shouldRecordTimerWhenResult() {
+		InstrumentationContext<ExecutionResult> execution = this.instrumentation.beginExecution(this.parameters);
+		ExecutionResult result = new ExecutionResultImpl("Hello", null);
+		execution.onCompleted(result, null);
+
+		Timer timer = this.registry.find("graphql.request").timer();
+		assertThat(timer).isNotNull();
+		assertThat(timer.takeSnapshot().count()).isEqualTo(1);
+	}
+
+	@Test
+	void shouldRecordDataFetchingCount() throws Exception {
+		InstrumentationContext<ExecutionResult> execution = this.instrumentation.beginExecution(this.parameters);
+		ExecutionResult result = new ExecutionResultImpl("Hello", null);
+
+		DataFetcher<String> dataFetcher = mock(DataFetcher.class);
+		given(dataFetcher.get(any())).willReturn("Hello");
+		InstrumentationFieldFetchParameters fieldFetchParameters = mockFieldFetchParameters(false);
+
+		DataFetcher<?> instrumented = this.instrumentation.instrumentDataFetcher(dataFetcher, fieldFetchParameters);
+		DataFetchingEnvironment environment = DataFetchingEnvironmentImpl.newDataFetchingEnvironment().build();
+		instrumented.get(environment);
+
+		execution.onCompleted(result, null);
+
+		DistributionSummary summary = this.registry.find("graphql.request.datafetch.count").summary();
+		assertThat(summary).isNotNull();
+		assertThat(summary.count()).isEqualTo(1);
+	}
+
+	@Test
+	void shouldRecordDataFetchingMetricWhenSuccess() throws Exception {
+		DataFetcher<String> dataFetcher = mock(DataFetcher.class);
+		given(dataFetcher.get(any())).willReturn("Hello");
+		InstrumentationFieldFetchParameters fieldFetchParameters = mockFieldFetchParameters(false);
+
+		DataFetcher<?> instrumented = this.instrumentation.instrumentDataFetcher(dataFetcher, fieldFetchParameters);
+		DataFetchingEnvironment environment = DataFetchingEnvironmentImpl.newDataFetchingEnvironment().build();
+		instrumented.get(environment);
+
+		Timer timer = this.registry.find("graphql.datafetcher").timer();
+		assertThat(timer).isNotNull();
+		assertThat(timer.takeSnapshot().count()).isEqualTo(1);
+	}
+
+	@Test
+	void shouldRecordDataFetchingMetricWhenSuccessCompletionStage() throws Exception {
+		DataFetcher<CompletionStage<String>> dataFetcher = mock(DataFetcher.class);
+		given(dataFetcher.get(any())).willReturn(CompletableFuture.completedFuture("Hello"));
+		InstrumentationFieldFetchParameters fieldFetchParameters = mockFieldFetchParameters(false);
+
+		DataFetcher<?> instrumented = this.instrumentation.instrumentDataFetcher(dataFetcher, fieldFetchParameters);
+		DataFetchingEnvironment environment = DataFetchingEnvironmentImpl.newDataFetchingEnvironment().build();
+		instrumented.get(environment);
+
+		Timer timer = this.registry.find("graphql.datafetcher").timer();
+		assertThat(timer).isNotNull();
+		assertThat(timer.takeSnapshot().count()).isEqualTo(1);
+	}
+
+	@Test
+	void shouldRecordDataFetchingMetricWhenError() throws Exception {
+		DataFetcher<CompletionStage<String>> dataFetcher = mock(DataFetcher.class);
+		given(dataFetcher.get(any())).willThrow(new IllegalStateException("test"));
+		InstrumentationFieldFetchParameters fieldFetchParameters = mockFieldFetchParameters(false);
+
+		DataFetcher<?> instrumented = this.instrumentation.instrumentDataFetcher(dataFetcher, fieldFetchParameters);
+		DataFetchingEnvironment environment = DataFetchingEnvironmentImpl.newDataFetchingEnvironment().build();
+		assertThatThrownBy(() -> instrumented.get(environment)).isInstanceOf(IllegalStateException.class);
+
+		Timer timer = this.registry.find("graphql.datafetcher").timer();
+		assertThat(timer).isNotNull();
+		assertThat(timer.takeSnapshot().count()).isEqualTo(1);
+	}
+
+	@Test
+	void shouldNotRecordDataFetchingMetricWhenTrivial() throws Exception {
+		DataFetcher<String> dataFetcher = mock(DataFetcher.class);
+		given(dataFetcher.get(any())).willReturn("Hello");
+		InstrumentationFieldFetchParameters fieldFetchParameters = mockFieldFetchParameters(true);
+
+		DataFetcher<?> instrumented = this.instrumentation.instrumentDataFetcher(dataFetcher, fieldFetchParameters);
+		DataFetchingEnvironment environment = DataFetchingEnvironmentImpl.newDataFetchingEnvironment().build();
+		instrumented.get(environment);
+
+		Timer timer = this.registry.find("graphql.datafetcher").timer();
+		assertThat(timer).isNull();
+	}
+
+	private InstrumentationFieldFetchParameters mockFieldFetchParameters(boolean isTrivial) {
+		InstrumentationFieldFetchParameters fieldFetchParameters = mock(InstrumentationFieldFetchParameters.class);
+		given(fieldFetchParameters.isTrivialDataFetcher()).willReturn(isTrivial);
+		given(fieldFetchParameters.getInstrumentationState()).willReturn(this.state);
+		return fieldFetchParameters;
+	}
+
+}

spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/metrics/graphql/GraphQlTagsTests.java

@@ -0,0 +1,95 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.actuate.metrics.graphql;
+
+import java.util.Arrays;
+
+import graphql.ErrorType;
+import graphql.ExecutionResult;
+import graphql.ExecutionResultImpl;
+import graphql.GraphQLError;
+import graphql.GraphqlErrorBuilder;
+import io.micrometer.core.instrument.Tag;
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for {@link GraphQlTags}.
+ *
+ * @author Brian Clozel
+ */
+class GraphQlTagsTests {
+
+	@Test
+	void executionOutcomeShouldSucceed() {
+		ExecutionResult result = ExecutionResultImpl.newExecutionResult().build();
+		Tag outcomeTag = GraphQlTags.executionOutcome(result, null);
+		assertThat(outcomeTag.getValue()).isEqualTo("SUCCESS");
+	}
+
+	@Test
+	void executionOutcomeShouldErrorWhenExceptionThrown() {
+		ExecutionResult result = ExecutionResultImpl.newExecutionResult().build();
+		Tag tag = GraphQlTags.executionOutcome(result, new IllegalArgumentException("test error"));
+		assertThat(tag.getValue()).isEqualTo("ERROR");
+	}
+
+	@Test
+	void executionOutcomeShouldErrorWhenResponseErrors() {
+		GraphQLError error = GraphqlErrorBuilder.newError().message("Invalid query").build();
+		Tag tag = GraphQlTags.executionOutcome(ExecutionResultImpl.newExecutionResult().addError(error).build(), null);
+		assertThat(tag.getValue()).isEqualTo("ERROR");
+	}
+
+	@Test
+	void errorTypeShouldBeDefinedIfPresent() {
+		GraphQLError error = GraphqlErrorBuilder.newError().errorType(ErrorType.DataFetchingException)
+				.message("test error").build();
+		Tag errorTypeTag = GraphQlTags.errorType(error);
+		assertThat(errorTypeTag.getValue()).isEqualTo("DataFetchingException");
+	}
+
+	@Test
+	void errorPathShouldUseJsonPathFormat() {
+		GraphQLError error = GraphqlErrorBuilder.newError().path(Arrays.asList("project", "name")).message("test error")
+				.build();
+		Tag errorPathTag = GraphQlTags.errorPath(error);
+		assertThat(errorPathTag.getValue()).isEqualTo("$.project.name");
+	}
+
+	@Test
+	void errorPathShouldUseJsonPathFormatForIndices() {
+		GraphQLError error = GraphqlErrorBuilder.newError().path(Arrays.asList("issues", "42", "title"))
+				.message("test error").build();
+		Tag errorPathTag = GraphQlTags.errorPath(error);
+		assertThat(errorPathTag.getValue()).isEqualTo("$.issues[*].title");
+	}
+
+	@Test
+	void dataFetchingOutcomeShouldBeSuccessfulIfNoException() {
+		Tag fetchingOutcomeTag = GraphQlTags.dataFetchingOutcome(null);
+		assertThat(fetchingOutcomeTag.getValue()).isEqualTo("SUCCESS");
+	}
+
+	@Test
+	void dataFetchingOutcomeShouldBeErrorIfException() {
+		Tag fetchingOutcomeTag = GraphQlTags.dataFetchingOutcome(new IllegalStateException("error state"));
+		assertThat(fetchingOutcomeTag.getValue()).isEqualTo("ERROR");
+	}
+
+}

spring-boot-project/spring-boot-autoconfigure/build.gradle

@@ -137,6 +137,7 @@ dependencies {
 	optional("org.springframework.data:spring-data-neo4j")
 	optional("org.springframework.data:spring-data-r2dbc")
 	optional("org.springframework.data:spring-data-redis")
+	optional("org.springframework.graphql:spring-graphql")
 	optional("org.springframework.hateoas:spring-hateoas")
 	optional("org.springframework.security:spring-security-acl")
 	optional("org.springframework.security:spring-security-config")
@@ -173,6 +174,7 @@ dependencies {
 	testImplementation("com.github.h-thurow:simple-jndi")
 	testImplementation("com.ibm.db2:jcc")
 	testImplementation("com.jayway.jsonpath:json-path")
+	testImplementation("com.querydsl:querydsl-core")
 	testImplementation("com.squareup.okhttp3:mockwebserver")
 	testImplementation("com.sun.xml.messaging.saaj:saaj-impl")
 	testImplementation("io.projectreactor:reactor-test")
@@ -191,6 +193,7 @@ dependencies {
 	testImplementation("org.mockito:mockito-core")
 	testImplementation("org.mockito:mockito-junit-jupiter")
 	testImplementation("org.springframework:spring-test")
+	testImplementation("org.springframework.graphql:spring-graphql-test")
 	testImplementation("org.springframework.kafka:spring-kafka-test")
 	testImplementation("org.springframework.security:spring-security-test")
 	testImplementation("org.testcontainers:cassandra")

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/graphql/GraphQlAutoConfiguration.java

@@ -0,0 +1,130 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.autoconfigure.graphql;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import graphql.GraphQL;
+import graphql.execution.instrumentation.Instrumentation;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
+import org.springframework.beans.factory.ObjectProvider;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.io.Resource;
+import org.springframework.core.io.support.ResourcePatternResolver;
+import org.springframework.format.support.DefaultFormattingConversionService;
+import org.springframework.graphql.GraphQlService;
+import org.springframework.graphql.data.method.annotation.support.AnnotatedControllerConfigurer;
+import org.springframework.graphql.execution.BatchLoaderRegistry;
+import org.springframework.graphql.execution.DataFetcherExceptionResolver;
+import org.springframework.graphql.execution.DefaultBatchLoaderRegistry;
+import org.springframework.graphql.execution.ExecutionGraphQlService;
+import org.springframework.graphql.execution.GraphQlSource;
+import org.springframework.graphql.execution.MissingSchemaException;
+import org.springframework.graphql.execution.RuntimeWiringConfigurer;
+
+/**
+ * {@link EnableAutoConfiguration Auto-configuration} for creating a Spring GraphQL base
+ * infrastructure.
+ *
+ * @author Brian Clozel
+ * @since 2.7.0
+ */
+@Configuration(proxyBeanMethods = false)
+@ConditionalOnClass({ GraphQL.class, GraphQlSource.class })
+@EnableConfigurationProperties(GraphQlProperties.class)
+public class GraphQlAutoConfiguration {
+
+	private static final Log logger = LogFactory.getLog(GraphQlAutoConfiguration.class);
+
+	private final BatchLoaderRegistry batchLoaderRegistry = new DefaultBatchLoaderRegistry();
+
+	@Bean
+	@ConditionalOnMissingBean
+	public GraphQlSource graphQlSource(ResourcePatternResolver resourcePatternResolver, GraphQlProperties properties,
+			ObjectProvider<DataFetcherExceptionResolver> exceptionResolversProvider,
+			ObjectProvider<Instrumentation> instrumentationsProvider,
+			ObjectProvider<RuntimeWiringConfigurer> wiringConfigurers,
+			ObjectProvider<GraphQlSourceBuilderCustomizer> sourceCustomizers) {
+
+		List<Resource> schemaResources = resolveSchemaResources(resourcePatternResolver,
+				properties.getSchema().getLocations(), properties.getSchema().getFileExtensions());
+		GraphQlSource.Builder builder = GraphQlSource.builder()
+				.schemaResources(schemaResources.toArray(new Resource[0]))
+				.exceptionResolvers(exceptionResolversProvider.orderedStream().collect(Collectors.toList()))
+				.instrumentation(instrumentationsProvider.orderedStream().collect(Collectors.toList()));
+		wiringConfigurers.orderedStream().forEach(builder::configureRuntimeWiring);
+		sourceCustomizers.orderedStream().forEach((customizer) -> customizer.customize(builder));
+		try {
+			return builder.build();
+		}
+		catch (MissingSchemaException exc) {
+			throw new InvalidSchemaLocationsException(properties.getSchema().getLocations(), resourcePatternResolver,
+					exc);
+		}
+	}
+
+	@Bean
+	@ConditionalOnMissingBean
+	public BatchLoaderRegistry batchLoaderRegistry() {
+		return this.batchLoaderRegistry;
+	}
+
+	@Bean
+	@ConditionalOnMissingBean
+	public GraphQlService graphQlService(GraphQlSource graphQlSource) {
+		ExecutionGraphQlService service = new ExecutionGraphQlService(graphQlSource);
+		service.addDataLoaderRegistrar(this.batchLoaderRegistry);
+		return service;
+	}
+
+	@Bean
+	@ConditionalOnMissingBean
+	public AnnotatedControllerConfigurer annotatedControllerConfigurer() {
+		AnnotatedControllerConfigurer annotatedControllerConfigurer = new AnnotatedControllerConfigurer();
+		annotatedControllerConfigurer.setConversionService(new DefaultFormattingConversionService());
+		return annotatedControllerConfigurer;
+	}
+
+	private List<Resource> resolveSchemaResources(ResourcePatternResolver resolver, String[] schemaLocations,
+			String[] fileExtensions) {
+		List<Resource> schemaResources = new ArrayList<>();
+		for (String location : schemaLocations) {
+			for (String extension : fileExtensions) {
+				String resourcePattern = location + "*" + extension;
+				try {
+					schemaResources.addAll(Arrays.asList(resolver.getResources(resourcePattern)));
+				}
+				catch (IOException ex) {
+					logger.debug("Could not resolve schema location: '" + resourcePattern + "'", ex);
+				}
+			}
+		}
+		return schemaResources;
+	}
+
+}

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/graphql/GraphQlCorsProperties.java

@@ -0,0 +1,160 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.autoconfigure.graphql;
+
+import java.time.Duration;
+import java.time.temporal.ChronoUnit;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+import org.springframework.boot.context.properties.PropertyMapper;
+import org.springframework.boot.convert.DurationUnit;
+import org.springframework.lang.Nullable;
+import org.springframework.util.CollectionUtils;
+import org.springframework.web.cors.CorsConfiguration;
+
+/**
+ * Configuration properties for GraphQL endpoint's CORS support.
+ *
+ * @author Andy Wilkinson
+ * @author Brian Clozel
+ * @since 2.7.0
+ */
+@ConfigurationProperties(prefix = "spring.graphql.cors")
+public class GraphQlCorsProperties {
+
+	/**
+	 * Comma-separated list of origins to allow with '*' allowing all origins. When
+	 * allow-credentials is enabled, '*' cannot be used, and setting origin patterns
+	 * should be considered instead. When neither allowed origins nor allowed origin
+	 * patterns are set, cross-origin requests are effectively disabled.
+	 */
+	private List<String> allowedOrigins = new ArrayList<>();
+
+	/**
+	 * Comma-separated list of origin patterns to allow. Unlike allowed origins which only
+	 * support '*', origin patterns are more flexible, e.g. 'https://*.example.com', and
+	 * can be used with allow-credentials. When neither allowed origins nor allowed origin
+	 * patterns are set, cross-origin requests are effectively disabled.
+	 */
+	private List<String> allowedOriginPatterns = new ArrayList<>();
+
+	/**
+	 * Comma-separated list of HTTP methods to allow. '*' allows all methods. When not
+	 * set, defaults to GET.
+	 */
+	private List<String> allowedMethods = new ArrayList<>();
+
+	/**
+	 * Comma-separated list of HTTP headers to allow in a request. '*' allows all headers.
+	 */
+	private List<String> allowedHeaders = new ArrayList<>();
+
+	/**
+	 * Comma-separated list of headers to include in a response.
+	 */
+	private List<String> exposedHeaders = new ArrayList<>();
+
+	/**
+	 * Whether credentials are supported. When not set, credentials are not supported.
+	 */
+	@Nullable
+	private Boolean allowCredentials;
+
+	/**
+	 * How long the response from a pre-flight request can be cached by clients. If a
+	 * duration suffix is not specified, seconds will be used.
+	 */
+	@DurationUnit(ChronoUnit.SECONDS)
+	private Duration maxAge = Duration.ofSeconds(1800);
+
+	public List<String> getAllowedOrigins() {
+		return this.allowedOrigins;
+	}
+
+	public void setAllowedOrigins(List<String> allowedOrigins) {
+		this.allowedOrigins = allowedOrigins;
+	}
+
+	public List<String> getAllowedOriginPatterns() {
+		return this.allowedOriginPatterns;
+	}
+
+	public void setAllowedOriginPatterns(List<String> allowedOriginPatterns) {
+		this.allowedOriginPatterns = allowedOriginPatterns;
+	}
+
+	public List<String> getAllowedMethods() {
+		return this.allowedMethods;
+	}
+
+	public void setAllowedMethods(List<String> allowedMethods) {
+		this.allowedMethods = allowedMethods;
+	}
+
+	public List<String> getAllowedHeaders() {
+		return this.allowedHeaders;
+	}
+
+	public void setAllowedHeaders(List<String> allowedHeaders) {
+		this.allowedHeaders = allowedHeaders;
+	}
+
+	public List<String> getExposedHeaders() {
+		return this.exposedHeaders;
+	}
+
+	public void setExposedHeaders(List<String> exposedHeaders) {
+		this.exposedHeaders = exposedHeaders;
+	}
+
+	@Nullable
+	public Boolean getAllowCredentials() {
+		return this.allowCredentials;
+	}
+
+	public void setAllowCredentials(Boolean allowCredentials) {
+		this.allowCredentials = allowCredentials;
+	}
+
+	public Duration getMaxAge() {
+		return this.maxAge;
+	}
+
+	public void setMaxAge(Duration maxAge) {
+		this.maxAge = maxAge;
+	}
+
+	@Nullable
+	public CorsConfiguration toCorsConfiguration() {
+		if (CollectionUtils.isEmpty(this.allowedOrigins) && CollectionUtils.isEmpty(this.allowedOriginPatterns)) {
+			return null;
+		}
+		PropertyMapper map = PropertyMapper.get();
+		CorsConfiguration config = new CorsConfiguration();
+		map.from(this::getAllowedOrigins).to(config::setAllowedOrigins);
+		map.from(this::getAllowedOriginPatterns).to(config::setAllowedOriginPatterns);
+		map.from(this::getAllowedHeaders).whenNot(CollectionUtils::isEmpty).to(config::setAllowedHeaders);
+		map.from(this::getAllowedMethods).whenNot(CollectionUtils::isEmpty).to(config::setAllowedMethods);
+		map.from(this::getExposedHeaders).whenNot(CollectionUtils::isEmpty).to(config::setExposedHeaders);
+		map.from(this::getMaxAge).whenNonNull().as(Duration::getSeconds).to(config::setMaxAge);
+		map.from(this::getAllowCredentials).whenNonNull().to(config::setAllowCredentials);
+		return config;
+	}
+
+}

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/graphql/GraphQlProperties.java

@@ -0,0 +1,184 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.autoconfigure.graphql;
+
+import java.time.Duration;
+import java.util.Arrays;
+
+import org.springframework.boot.context.properties.ConfigurationProperties;
+
+/**
+ * {@link ConfigurationProperties properties} for Spring GraphQL.
+ *
+ * @author Brian Clozel
+ * @since 2.7.0
+ */
+@ConfigurationProperties(prefix = "spring.graphql")
+public class GraphQlProperties {
+
+	/**
+	 * Path at which to expose a GraphQL request HTTP endpoint.
+	 */
+	private String path = "/graphql";
+
+	private final Graphiql graphiql = new Graphiql();
+
+	private final Schema schema = new Schema();
+
+	private final Websocket websocket = new Websocket();
+
+	public Graphiql getGraphiql() {
+		return this.graphiql;
+	}
+
+	public String getPath() {
+		return this.path;
+	}
+
+	public void setPath(String path) {
+		this.path = path;
+	}
+
+	public Schema getSchema() {
+		return this.schema;
+	}
+
+	public Websocket getWebsocket() {
+		return this.websocket;
+	}
+
+	public static class Schema {
+
+		/**
+		 * Locations of GraphQL schema files.
+		 */
+		private String[] locations = new String[] { "classpath:graphql/**/" };
+
+		/**
+		 * File extensions for GraphQL schema files.
+		 */
+		private String[] fileExtensions = new String[] { ".graphqls", ".gqls" };
+
+		private final Printer printer = new Printer();
+
+		public String[] getLocations() {
+			return this.locations;
+		}
+
+		public void setLocations(String[] locations) {
+			this.locations = appendSlashIfNecessary(locations);
+		}
+
+		public String[] getFileExtensions() {
+			return this.fileExtensions;
+		}
+
+		public void setFileExtensions(String[] fileExtensions) {
+			this.fileExtensions = fileExtensions;
+		}
+
+		private String[] appendSlashIfNecessary(String[] locations) {
+			return Arrays.stream(locations).map((location) -> location.endsWith("/") ? location : location + "/")
+					.toArray(String[]::new);
+		}
+
+		public Printer getPrinter() {
+			return this.printer;
+		}
+
+		public static class Printer {
+
+			/**
+			 * Whether the endpoint that prints the schema is enabled. Schema is available
+			 * under spring.graphql.path + "/schema".
+			 */
+			private boolean enabled = false;
+
+			public boolean isEnabled() {
+				return this.enabled;
+			}
+
+			public void setEnabled(boolean enabled) {
+				this.enabled = enabled;
+			}
+
+		}
+
+	}
+
+	public static class Graphiql {
+
+		/**
+		 * Path to the GraphiQL UI endpoint.
+		 */
+		private String path = "/graphiql";
+
+		/**
+		 * Whether the default GraphiQL UI is enabled.
+		 */
+		private boolean enabled = false;
+
+		public String getPath() {
+			return this.path;
+		}
+
+		public void setPath(String path) {
+			this.path = path;
+		}
+
+		public boolean isEnabled() {
+			return this.enabled;
+		}
+
+		public void setEnabled(boolean enabled) {
+			this.enabled = enabled;
+		}
+
+	}
+
+	public static class Websocket {
+
+		/**
+		 * Path of the GraphQL WebSocket subscription endpoint.
+		 */
+		private String path;
+
+		/**
+		 * Time within which the initial {@code CONNECTION_INIT} type message must be
+		 * received.
+		 */
+		private Duration connectionInitTimeout = Duration.ofSeconds(60);
+
+		public String getPath() {
+			return this.path;
+		}
+
+		public void setPath(String path) {
+			this.path = path;
+		}
+
+		public Duration getConnectionInitTimeout() {
+			return this.connectionInitTimeout;
+		}
+
+		public void setConnectionInitTimeout(Duration connectionInitTimeout) {
+			this.connectionInitTimeout = connectionInitTimeout;
+		}
+
+	}
+
+}

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/graphql/GraphQlSourceBuilderCustomizer.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.autoconfigure.graphql;
+
+import org.springframework.graphql.execution.GraphQlSource;
+
+/**
+ * Callback interface that can be implemented by beans wishing to customize properties of
+ * {@link org.springframework.graphql.execution.GraphQlSource.Builder} whilst retaining
+ * default auto-configuration.
+ *
+ * @author Rossen Stoyanchev
+ * @since 2.7.0
+ */
+@FunctionalInterface
+public interface GraphQlSourceBuilderCustomizer {
+
+	/**
+	 * Customize the {@link GraphQlSource.Builder} instance.
+	 * @param builder builder the builder to customize
+	 */
+	void customize(GraphQlSource.Builder builder);
+
+}

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/graphql/InvalidSchemaLocationsException.java

@@ -0,0 +1,101 @@
+/*
+ * Copyright 2020-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.autoconfigure.graphql;
+
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+import org.springframework.core.NestedRuntimeException;
+import org.springframework.core.io.support.ResourcePatternResolver;
+import org.springframework.util.Assert;
+
+/**
+ * {@link InvalidSchemaLocationsException} thrown when no schema file could be found in
+ * the provided locations.
+ *
+ * @author Brian Clozel
+ * @since 2.7.0
+ */
+public class InvalidSchemaLocationsException extends NestedRuntimeException {
+
+	private final List<SchemaLocation> schemaLocations;
+
+	public InvalidSchemaLocationsException(String[] locations, ResourcePatternResolver resolver) {
+		this(locations, resolver, null);
+	}
+
+	public InvalidSchemaLocationsException(String[] locations, ResourcePatternResolver resolver, Throwable cause) {
+		super("No schema file could be found in the provided locations.", cause);
+		Assert.notEmpty(locations, "locations should not be empty");
+		Assert.notNull(resolver, "resolver should not be null");
+		List<SchemaLocation> providedLocations = new ArrayList<>();
+		for (String location : locations) {
+			try {
+				String uri = resolver.getResource(location).getURI().toASCIIString();
+				providedLocations.add(new SchemaLocation(location, uri));
+			}
+			catch (IOException ex) {
+				providedLocations.add(new SchemaLocation(location, ""));
+			}
+		}
+		this.schemaLocations = Collections.unmodifiableList(providedLocations);
+	}
+
+	/**
+	 * Return the list of provided locations where to look for schemas.
+	 * @return the list of locations
+	 */
+	public List<SchemaLocation> getSchemaLocations() {
+		return this.schemaLocations;
+	}
+
+	/**
+	 * The location where to look for schemas.
+	 */
+	public static class SchemaLocation {
+
+		private final String location;
+
+		private final String uri;
+
+		SchemaLocation(String location, String uri) {
+			this.location = location;
+			this.uri = uri;
+		}
+
+		/**
+		 * Return the location String to be resolved by a {@link ResourcePatternResolver}.
+		 * @return the location
+		 */
+		public String getLocation() {
+			return this.location;
+		}
+
+		/**
+		 * Return the resolved URI String for this location, an empty String if resolution
+		 * failed.
+		 * @return the resolved location or an empty String
+		 */
+		public String getUri() {
+			return this.uri;
+		}
+
+	}
+
+}

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/graphql/InvalidSchemaLocationsExceptionFailureAnalyzer.java

@@ -0,0 +1,42 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.autoconfigure.graphql;
+
+import org.springframework.boot.diagnostics.AbstractFailureAnalyzer;
+import org.springframework.boot.diagnostics.FailureAnalysis;
+
+/**
+ * An implementation of {@link AbstractFailureAnalyzer} to analyze failures caused by
+ * {@link InvalidSchemaLocationsException}.
+ *
+ * @author Brian Clozel
+ */
+class InvalidSchemaLocationsExceptionFailureAnalyzer extends AbstractFailureAnalyzer<InvalidSchemaLocationsException> {
+
+	@Override
+	protected FailureAnalysis analyze(Throwable rootFailure, InvalidSchemaLocationsException cause) {
+		String message = "Could not find any GraphQL schema file under configured locations.";
+		StringBuilder action = new StringBuilder(
+				"Check that the following locations contain schema files: " + System.lineSeparator());
+		for (InvalidSchemaLocationsException.SchemaLocation schemaLocation : cause.getSchemaLocations()) {
+			action.append(String.format("- '%s' (%s)" + System.lineSeparator(), schemaLocation.getUri(),
+					schemaLocation.getLocation()));
+		}
+		return new FailureAnalysis(message, action.toString(), cause);
+	}
+
+}

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/graphql/data/GraphQlQueryByExampleAutoConfiguration.java

@@ -0,0 +1,71 @@
+/*
+ * Copyright 2002-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.autoconfigure.graphql.data;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import graphql.GraphQL;
+
+import org.springframework.beans.factory.ObjectProvider;
+import org.springframework.boot.autoconfigure.AutoConfigureAfter;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
+import org.springframework.boot.autoconfigure.graphql.GraphQlAutoConfiguration;
+import org.springframework.boot.autoconfigure.graphql.GraphQlSourceBuilderCustomizer;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.repository.query.QueryByExampleExecutor;
+import org.springframework.data.repository.query.ReactiveQueryByExampleExecutor;
+import org.springframework.graphql.data.query.QueryByExampleDataFetcher;
+import org.springframework.graphql.execution.GraphQlSource;
+
+/**
+ * {@link EnableAutoConfiguration Auto-configuration} that creates a
+ * {@link GraphQlSourceBuilderCustomizer}s to detect Spring Data repositories with Query
+ * By Example support and register them as {@code DataFetcher}s for any queries with a
+ * matching return type.
+ *
+ * @author Rossen Stoyanchev
+ * @since 2.7.0
+ * @see QueryByExampleDataFetcher#autoRegistrationTypeVisitor(List, List)
+ */
+@Configuration(proxyBeanMethods = false)
+@ConditionalOnClass({ GraphQL.class, QueryByExampleDataFetcher.class, QueryByExampleExecutor.class })
+@ConditionalOnBean(GraphQlSource.class)
+@AutoConfigureAfter(GraphQlAutoConfiguration.class)
+public class GraphQlQueryByExampleAutoConfiguration {
+
+	@Bean
+	public GraphQlSourceBuilderCustomizer queryByExampleRegistrar(
+			ObjectProvider<QueryByExampleExecutor<?>> executorsProvider,
+			ObjectProvider<ReactiveQueryByExampleExecutor<?>> reactiveExecutorsProvider) {
+
+		return (builder) -> {
+			List<QueryByExampleExecutor<?>> executors = executorsProvider.stream().collect(Collectors.toList());
+			List<ReactiveQueryByExampleExecutor<?>> reactiveExecutors = reactiveExecutorsProvider.stream()
+					.collect(Collectors.toList());
+			if (!executors.isEmpty()) {
+				builder.typeVisitors(Collections.singletonList(
+						QueryByExampleDataFetcher.autoRegistrationTypeVisitor(executors, reactiveExecutors)));
+			}
+		};
+	}
+
+}

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/graphql/data/GraphQlQuerydslAutoConfiguration.java

@@ -0,0 +1,71 @@
+/*
+ * Copyright 2002-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.autoconfigure.graphql.data;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import graphql.GraphQL;
+
+import org.springframework.beans.factory.ObjectProvider;
+import org.springframework.boot.autoconfigure.AutoConfigureAfter;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
+import org.springframework.boot.autoconfigure.graphql.GraphQlAutoConfiguration;
+import org.springframework.boot.autoconfigure.graphql.GraphQlSourceBuilderCustomizer;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.querydsl.QuerydslPredicateExecutor;
+import org.springframework.data.querydsl.ReactiveQuerydslPredicateExecutor;
+import org.springframework.graphql.data.query.QuerydslDataFetcher;
+import org.springframework.graphql.execution.GraphQlSource;
+
+/**
+ * {@link EnableAutoConfiguration Auto-configuration} that creates a
+ * {@link GraphQlSourceBuilderCustomizer}s to detect Spring Data repositories with
+ * Querydsl support and register them as {@code DataFetcher}s for any queries with a
+ * matching return type.
+ *
+ * @author Rossen Stoyanchev
+ * @since 2.7.0
+ * @see QuerydslDataFetcher#autoRegistrationTypeVisitor(List, List)
+ */
+@Configuration(proxyBeanMethods = false)
+@ConditionalOnClass({ GraphQL.class, QuerydslDataFetcher.class, QuerydslPredicateExecutor.class })
+@ConditionalOnBean(GraphQlSource.class)
+@AutoConfigureAfter(GraphQlAutoConfiguration.class)
+public class GraphQlQuerydslAutoConfiguration {
+
+	@Bean
+	public GraphQlSourceBuilderCustomizer querydslRegistrar(
+			ObjectProvider<QuerydslPredicateExecutor<?>> executorsProvider,
+			ObjectProvider<ReactiveQuerydslPredicateExecutor<?>> reactiveExecutorsProvider) {
+
+		return (builder) -> {
+			List<QuerydslPredicateExecutor<?>> executors = executorsProvider.stream().collect(Collectors.toList());
+			List<ReactiveQuerydslPredicateExecutor<?>> reactiveExecutors = reactiveExecutorsProvider.stream()
+					.collect(Collectors.toList());
+			if (!executors.isEmpty()) {
+				builder.typeVisitors(Collections
+						.singletonList(QuerydslDataFetcher.autoRegistrationTypeVisitor(executors, reactiveExecutors)));
+			}
+		};
+	}
+
+}

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/graphql/data/GraphQlReactiveQueryByExampleAutoConfiguration.java

@@ -0,0 +1,67 @@
+/*
+ * Copyright 2002-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.autoconfigure.graphql.data;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import graphql.GraphQL;
+
+import org.springframework.beans.factory.ObjectProvider;
+import org.springframework.boot.autoconfigure.AutoConfigureAfter;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
+import org.springframework.boot.autoconfigure.graphql.GraphQlAutoConfiguration;
+import org.springframework.boot.autoconfigure.graphql.GraphQlSourceBuilderCustomizer;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.repository.query.ReactiveQueryByExampleExecutor;
+import org.springframework.graphql.data.query.QueryByExampleDataFetcher;
+import org.springframework.graphql.execution.GraphQlSource;
+
+/**
+ * {@link EnableAutoConfiguration Auto-configuration} that creates a
+ * {@link GraphQlSourceBuilderCustomizer}s to detect Spring Data repositories with Query
+ * By Example support and register them as {@code DataFetcher}s for any queries with a
+ * matching return type.
+ *
+ * @author Rossen Stoyanchev
+ * @since 2.7.0
+ * @see QueryByExampleDataFetcher#autoRegistrationTypeVisitor(List, List)
+ */
+@Configuration(proxyBeanMethods = false)
+@ConditionalOnClass({ GraphQL.class, QueryByExampleDataFetcher.class, ReactiveQueryByExampleExecutor.class })
+@ConditionalOnBean(GraphQlSource.class)
+@AutoConfigureAfter(GraphQlAutoConfiguration.class)
+public class GraphQlReactiveQueryByExampleAutoConfiguration {
+
+	@Bean
+	public GraphQlSourceBuilderCustomizer reactiveQueryByExampleRegistrar(
+			ObjectProvider<ReactiveQueryByExampleExecutor<?>> executorsProvider) {
+
+		return (builder) -> {
+			List<ReactiveQueryByExampleExecutor<?>> executors = executorsProvider.stream().collect(Collectors.toList());
+			if (!executors.isEmpty()) {
+				builder.typeVisitors(Collections.singletonList(
+						QueryByExampleDataFetcher.autoRegistrationTypeVisitor(Collections.emptyList(), executors)));
+			}
+		};
+	}
+
+}

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/graphql/data/GraphQlReactiveQuerydslAutoConfiguration.java

@@ -0,0 +1,68 @@
+/*
+ * Copyright 2002-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.autoconfigure.graphql.data;
+
+import java.util.Collections;
+import java.util.List;
+import java.util.stream.Collectors;
+
+import graphql.GraphQL;
+
+import org.springframework.beans.factory.ObjectProvider;
+import org.springframework.boot.autoconfigure.AutoConfigureAfter;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
+import org.springframework.boot.autoconfigure.graphql.GraphQlAutoConfiguration;
+import org.springframework.boot.autoconfigure.graphql.GraphQlSourceBuilderCustomizer;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.querydsl.ReactiveQuerydslPredicateExecutor;
+import org.springframework.graphql.data.query.QuerydslDataFetcher;
+import org.springframework.graphql.execution.GraphQlSource;
+
+/**
+ * {@link EnableAutoConfiguration Auto-configuration} that creates a
+ * {@link GraphQlSourceBuilderCustomizer}s to detect Spring Data repositories with
+ * Querydsl support and register them as {@code DataFetcher}s for any queries with a
+ * matching return type.
+ *
+ * @author Rossen Stoyanchev
+ * @since 2.7.0
+ * @see QuerydslDataFetcher#autoRegistrationTypeVisitor(List, List)
+ */
+@Configuration(proxyBeanMethods = false)
+@ConditionalOnClass({ GraphQL.class, QuerydslDataFetcher.class, ReactiveQuerydslPredicateExecutor.class })
+@ConditionalOnBean(GraphQlSource.class)
+@AutoConfigureAfter(GraphQlAutoConfiguration.class)
+public class GraphQlReactiveQuerydslAutoConfiguration {
+
+	@Bean
+	public GraphQlSourceBuilderCustomizer reactiveQuerydslRegistrar(
+			ObjectProvider<ReactiveQuerydslPredicateExecutor<?>> executorsProvider) {
+
+		return (builder) -> {
+			List<ReactiveQuerydslPredicateExecutor<?>> executors = executorsProvider.stream()
+					.collect(Collectors.toList());
+			if (!executors.isEmpty()) {
+				builder.typeVisitors(Collections.singletonList(
+						QuerydslDataFetcher.autoRegistrationTypeVisitor(Collections.emptyList(), executors)));
+			}
+		};
+	}
+
+}

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/graphql/data/package-info.java

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2020-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Auto-configuration classes for data integrations with GraphQL.
+ */
+package org.springframework.boot.autoconfigure.graphql.data;

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/graphql/package-info.java

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Auto-configuration for Spring GraphQL.
+ */
+package org.springframework.boot.autoconfigure.graphql;

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/graphql/reactive/GraphQlWebFluxAutoConfiguration.java

@@ -0,0 +1,176 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.autoconfigure.graphql.reactive;
+
+import java.util.Collections;
+import java.util.stream.Collectors;
+
+import graphql.GraphQL;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
+import org.springframework.beans.factory.ObjectProvider;
+import org.springframework.boot.autoconfigure.AutoConfigureAfter;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication;
+import org.springframework.boot.autoconfigure.graphql.GraphQlAutoConfiguration;
+import org.springframework.boot.autoconfigure.graphql.GraphQlCorsProperties;
+import org.springframework.boot.autoconfigure.graphql.GraphQlProperties;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.io.ResourceLoader;
+import org.springframework.graphql.GraphQlService;
+import org.springframework.graphql.execution.GraphQlSource;
+import org.springframework.graphql.web.WebGraphQlHandler;
+import org.springframework.graphql.web.WebInterceptor;
+import org.springframework.graphql.web.webflux.GraphQlHttpHandler;
+import org.springframework.graphql.web.webflux.GraphQlWebSocketHandler;
+import org.springframework.graphql.web.webflux.GraphiQlHandler;
+import org.springframework.graphql.web.webflux.SchemaHandler;
+import org.springframework.http.HttpMethod;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.http.codec.ServerCodecConfigurer;
+import org.springframework.web.cors.CorsConfiguration;
+import org.springframework.web.reactive.HandlerMapping;
+import org.springframework.web.reactive.config.CorsRegistry;
+import org.springframework.web.reactive.config.WebFluxConfigurer;
+import org.springframework.web.reactive.function.server.RouterFunction;
+import org.springframework.web.reactive.function.server.RouterFunctions;
+import org.springframework.web.reactive.function.server.ServerResponse;
+import org.springframework.web.reactive.handler.SimpleUrlHandlerMapping;
+import org.springframework.web.reactive.socket.server.support.WebSocketUpgradeHandlerPredicate;
+
+import static org.springframework.web.reactive.function.server.RequestPredicates.accept;
+import static org.springframework.web.reactive.function.server.RequestPredicates.contentType;
+
+/**
+ * {@link EnableAutoConfiguration Auto-configuration} for enabling Spring GraphQL over
+ * WebFlux.
+ *
+ * @author Brian Clozel
+ * @since 2.7.0
+ */
+@Configuration(proxyBeanMethods = false)
+@ConditionalOnWebApplication(type = ConditionalOnWebApplication.Type.REACTIVE)
+@ConditionalOnClass({ GraphQL.class, GraphQlHttpHandler.class })
+@ConditionalOnBean(GraphQlService.class)
+@AutoConfigureAfter(GraphQlAutoConfiguration.class)
+@EnableConfigurationProperties(GraphQlCorsProperties.class)
+public class GraphQlWebFluxAutoConfiguration {
+
+	private static final Log logger = LogFactory.getLog(GraphQlWebFluxAutoConfiguration.class);
+
+	@Bean
+	@ConditionalOnMissingBean
+	public GraphQlHttpHandler graphQlHttpHandler(WebGraphQlHandler webGraphQlHandler) {
+		return new GraphQlHttpHandler(webGraphQlHandler);
+	}
+
+	@Bean
+	@ConditionalOnMissingBean
+	public WebGraphQlHandler webGraphQlHandler(GraphQlService service,
+			ObjectProvider<WebInterceptor> interceptorsProvider) {
+		return WebGraphQlHandler.builder(service)
+				.interceptors(interceptorsProvider.orderedStream().collect(Collectors.toList())).build();
+	}
+
+	@Bean
+	public RouterFunction<ServerResponse> graphQlEndpoint(GraphQlHttpHandler handler, GraphQlSource graphQlSource,
+			GraphQlProperties properties, ResourceLoader resourceLoader) {
+
+		String graphQLPath = properties.getPath();
+		if (logger.isInfoEnabled()) {
+			logger.info("GraphQL endpoint HTTP POST " + graphQLPath);
+		}
+
+		RouterFunctions.Builder builder = RouterFunctions.route()
+				.GET(graphQLPath,
+						(request) -> ServerResponse.status(HttpStatus.METHOD_NOT_ALLOWED)
+								.headers((headers) -> headers.setAllow(Collections.singleton(HttpMethod.POST))).build())
+				.POST(graphQLPath, accept(MediaType.APPLICATION_JSON).and(contentType(MediaType.APPLICATION_JSON)),
+						handler::handleRequest);
+
+		if (properties.getGraphiql().isEnabled()) {
+			GraphiQlHandler graphiQlHandler = new GraphiQlHandler(graphQLPath);
+			builder = builder.GET(properties.getGraphiql().getPath(), graphiQlHandler::handleRequest);
+		}
+
+		if (properties.getSchema().getPrinter().isEnabled()) {
+			SchemaHandler schemaHandler = new SchemaHandler(graphQlSource);
+			builder = builder.GET(graphQLPath + "/schema", schemaHandler::handleRequest);
+		}
+
+		return builder.build();
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	public static class GraphQlEndpointCorsConfiguration implements WebFluxConfigurer {
+
+		final GraphQlProperties graphQlProperties;
+
+		final GraphQlCorsProperties corsProperties;
+
+		public GraphQlEndpointCorsConfiguration(GraphQlProperties graphQlProps, GraphQlCorsProperties corsProps) {
+			this.graphQlProperties = graphQlProps;
+			this.corsProperties = corsProps;
+		}
+
+		@Override
+		public void addCorsMappings(CorsRegistry registry) {
+			CorsConfiguration configuration = this.corsProperties.toCorsConfiguration();
+			if (configuration != null) {
+				registry.addMapping(this.graphQlProperties.getPath()).combine(configuration);
+			}
+		}
+
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	@ConditionalOnProperty(prefix = "spring.graphql.websocket", name = "path")
+	public static class WebSocketConfiguration {
+
+		@Bean
+		@ConditionalOnMissingBean
+		public GraphQlWebSocketHandler graphQlWebSocketHandler(WebGraphQlHandler webGraphQlHandler,
+				GraphQlProperties properties, ServerCodecConfigurer configurer) {
+			return new GraphQlWebSocketHandler(webGraphQlHandler, configurer,
+					properties.getWebsocket().getConnectionInitTimeout());
+		}
+
+		@Bean
+		public HandlerMapping graphQlWebSocketEndpoint(GraphQlWebSocketHandler graphQlWebSocketHandler,
+				GraphQlProperties properties) {
+			String path = properties.getWebsocket().getPath();
+			if (logger.isInfoEnabled()) {
+				logger.info("GraphQL endpoint WebSocket " + path);
+			}
+			SimpleUrlHandlerMapping mapping = new SimpleUrlHandlerMapping();
+			mapping.setHandlerPredicate(new WebSocketUpgradeHandlerPredicate());
+			mapping.setUrlMap(Collections.singletonMap(path, graphQlWebSocketHandler));
+			mapping.setOrder(-2); // Ahead of HTTP endpoint ("routerFunctionMapping" bean)
+			return mapping;
+		}
+
+	}
+
+}

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/graphql/reactive/package-info.java

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2020-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Auto-configuration classes for WebFlux support in Spring GraphQL.
+ */
+package org.springframework.boot.autoconfigure.graphql.reactive;

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/graphql/security/GraphQlWebFluxSecurityAutoConfiguration.java

@@ -0,0 +1,54 @@
+/*
+ * Copyright 2020-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.autoconfigure.graphql.security;
+
+import graphql.GraphQL;
+
+import org.springframework.boot.autoconfigure.AutoConfigureAfter;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication;
+import org.springframework.boot.autoconfigure.graphql.reactive.GraphQlWebFluxAutoConfiguration;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.graphql.security.ReactiveSecurityDataFetcherExceptionResolver;
+import org.springframework.graphql.web.webflux.GraphQlHttpHandler;
+import org.springframework.security.config.annotation.web.reactive.EnableWebFluxSecurity;
+
+/**
+ * {@link EnableAutoConfiguration Auto-configuration} for enabling Security support for
+ * Spring GraphQL with WebFlux.
+ *
+ * @author Brian Clozel
+ * @since 2.7.0
+ */
+@Configuration(proxyBeanMethods = false)
+@ConditionalOnWebApplication(type = ConditionalOnWebApplication.Type.REACTIVE)
+@ConditionalOnClass({ GraphQL.class, GraphQlHttpHandler.class, EnableWebFluxSecurity.class })
+@ConditionalOnBean(GraphQlHttpHandler.class)
+@AutoConfigureAfter(GraphQlWebFluxAutoConfiguration.class)
+public class GraphQlWebFluxSecurityAutoConfiguration {
+
+	@Bean
+	@ConditionalOnMissingBean
+	public ReactiveSecurityDataFetcherExceptionResolver reactiveSecurityDataFetcherExceptionResolver() {
+		return new ReactiveSecurityDataFetcherExceptionResolver();
+	}
+
+}

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/graphql/security/GraphQlWebMvcSecurityAutoConfiguration.java

@@ -0,0 +1,61 @@
+/*
+ * Copyright 2020-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.autoconfigure.graphql.security;
+
+import graphql.GraphQL;
+
+import org.springframework.boot.autoconfigure.AutoConfigureAfter;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication;
+import org.springframework.boot.autoconfigure.graphql.servlet.GraphQlWebMvcAutoConfiguration;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.graphql.security.SecurityContextThreadLocalAccessor;
+import org.springframework.graphql.security.SecurityDataFetcherExceptionResolver;
+import org.springframework.graphql.web.webmvc.GraphQlHttpHandler;
+import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
+
+/**
+ * {@link EnableAutoConfiguration Auto-configuration} for enabling Security support for
+ * Spring GraphQL with MVC.
+ *
+ * @author Brian Clozel
+ * @since 2.7.0
+ */
+@Configuration(proxyBeanMethods = false)
+@ConditionalOnWebApplication(type = ConditionalOnWebApplication.Type.SERVLET)
+@ConditionalOnClass({ GraphQL.class, GraphQlHttpHandler.class, EnableWebSecurity.class })
+@ConditionalOnBean(GraphQlHttpHandler.class)
+@AutoConfigureAfter(GraphQlWebMvcAutoConfiguration.class)
+public class GraphQlWebMvcSecurityAutoConfiguration {
+
+	@Bean
+	@ConditionalOnMissingBean
+	public SecurityDataFetcherExceptionResolver securityDataFetcherExceptionResolver() {
+		return new SecurityDataFetcherExceptionResolver();
+	}
+
+	@Bean
+	@ConditionalOnMissingBean
+	public SecurityContextThreadLocalAccessor securityContextThreadLocalAccessor() {
+		return new SecurityContextThreadLocalAccessor();
+	}
+
+}

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/graphql/security/package-info.java

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2020-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Auto-configuration classes for Security support in Spring GraphQL.
+ */
+package org.springframework.boot.autoconfigure.graphql.security;

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/graphql/servlet/GraphQlWebMvcAutoConfiguration.java

@@ -0,0 +1,193 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.autoconfigure.graphql.servlet;
+
+import java.util.Collections;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+import javax.websocket.server.ServerContainer;
+
+import graphql.GraphQL;
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
+import org.springframework.beans.factory.ObjectProvider;
+import org.springframework.boot.autoconfigure.AutoConfigureAfter;
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnWebApplication;
+import org.springframework.boot.autoconfigure.graphql.GraphQlAutoConfiguration;
+import org.springframework.boot.autoconfigure.graphql.GraphQlCorsProperties;
+import org.springframework.boot.autoconfigure.graphql.GraphQlProperties;
+import org.springframework.boot.autoconfigure.http.HttpMessageConverters;
+import org.springframework.boot.context.properties.EnableConfigurationProperties;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.io.ResourceLoader;
+import org.springframework.graphql.GraphQlService;
+import org.springframework.graphql.execution.GraphQlSource;
+import org.springframework.graphql.execution.ThreadLocalAccessor;
+import org.springframework.graphql.web.WebGraphQlHandler;
+import org.springframework.graphql.web.WebInterceptor;
+import org.springframework.graphql.web.webmvc.GraphQlHttpHandler;
+import org.springframework.graphql.web.webmvc.GraphQlWebSocketHandler;
+import org.springframework.graphql.web.webmvc.GraphiQlHandler;
+import org.springframework.graphql.web.webmvc.SchemaHandler;
+import org.springframework.http.HttpMethod;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.http.converter.GenericHttpMessageConverter;
+import org.springframework.web.cors.CorsConfiguration;
+import org.springframework.web.servlet.HandlerMapping;
+import org.springframework.web.servlet.config.annotation.CorsRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+import org.springframework.web.servlet.function.RequestPredicates;
+import org.springframework.web.servlet.function.RouterFunction;
+import org.springframework.web.servlet.function.RouterFunctions;
+import org.springframework.web.servlet.function.ServerResponse;
+import org.springframework.web.socket.WebSocketHandler;
+import org.springframework.web.socket.server.support.DefaultHandshakeHandler;
+import org.springframework.web.socket.server.support.WebSocketHandlerMapping;
+import org.springframework.web.socket.server.support.WebSocketHttpRequestHandler;
+
+/**
+ * {@link EnableAutoConfiguration Auto-configuration} for enabling Spring GraphQL over
+ * Spring MVC.
+ *
+ * @author Brian Clozel
+ * @since 2.7.0
+ */
+@Configuration(proxyBeanMethods = false)
+@ConditionalOnWebApplication(type = ConditionalOnWebApplication.Type.SERVLET)
+@ConditionalOnClass({ GraphQL.class, GraphQlHttpHandler.class })
+@ConditionalOnBean(GraphQlService.class)
+@AutoConfigureAfter(GraphQlAutoConfiguration.class)
+@EnableConfigurationProperties(GraphQlCorsProperties.class)
+public class GraphQlWebMvcAutoConfiguration {
+
+	private static final Log logger = LogFactory.getLog(GraphQlWebMvcAutoConfiguration.class);
+
+	@Bean
+	@ConditionalOnMissingBean
+	public GraphQlHttpHandler graphQlHttpHandler(WebGraphQlHandler webGraphQlHandler) {
+		return new GraphQlHttpHandler(webGraphQlHandler);
+	}
+
+	@Bean
+	@ConditionalOnMissingBean
+	public WebGraphQlHandler webGraphQlHandler(GraphQlService service,
+			ObjectProvider<WebInterceptor> interceptorsProvider,
+			ObjectProvider<ThreadLocalAccessor> accessorsProvider) {
+		return WebGraphQlHandler.builder(service)
+				.interceptors(interceptorsProvider.orderedStream().collect(Collectors.toList()))
+				.threadLocalAccessors(accessorsProvider.orderedStream().collect(Collectors.toList())).build();
+	}
+
+	@Bean
+	public RouterFunction<ServerResponse> graphQlRouterFunction(GraphQlHttpHandler handler, GraphQlSource graphQlSource,
+			GraphQlProperties properties, ResourceLoader resourceLoader) {
+
+		String graphQLPath = properties.getPath();
+		if (logger.isInfoEnabled()) {
+			logger.info("GraphQL endpoint HTTP POST " + graphQLPath);
+		}
+
+		RouterFunctions.Builder builder = RouterFunctions.route()
+				.GET(graphQLPath,
+						(request) -> ServerResponse.status(HttpStatus.METHOD_NOT_ALLOWED)
+								.headers((headers) -> headers.setAllow(Collections.singleton(HttpMethod.POST))).build())
+				.POST(graphQLPath, RequestPredicates.contentType(MediaType.APPLICATION_JSON)
+						.and(RequestPredicates.accept(MediaType.APPLICATION_JSON)), handler::handleRequest);
+
+		if (properties.getGraphiql().isEnabled()) {
+			GraphiQlHandler graphiQLHandler = new GraphiQlHandler(graphQLPath);
+			builder = builder.GET(properties.getGraphiql().getPath(), graphiQLHandler::handleRequest);
+		}
+
+		if (properties.getSchema().getPrinter().isEnabled()) {
+			SchemaHandler schemaHandler = new SchemaHandler(graphQlSource);
+			builder = builder.GET(graphQLPath + "/schema", schemaHandler::handleRequest);
+		}
+
+		return builder.build();
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	public static class GraphQlEndpointCorsConfiguration implements WebMvcConfigurer {
+
+		final GraphQlProperties graphQlProperties;
+
+		final GraphQlCorsProperties corsProperties;
+
+		public GraphQlEndpointCorsConfiguration(GraphQlProperties graphQlProps, GraphQlCorsProperties corsProps) {
+			this.graphQlProperties = graphQlProps;
+			this.corsProperties = corsProps;
+		}
+
+		@Override
+		public void addCorsMappings(CorsRegistry registry) {
+			CorsConfiguration configuration = this.corsProperties.toCorsConfiguration();
+			if (configuration != null) {
+				registry.addMapping(this.graphQlProperties.getPath()).combine(configuration);
+			}
+		}
+
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	@ConditionalOnClass({ ServerContainer.class, WebSocketHandler.class })
+	@ConditionalOnProperty(prefix = "spring.graphql.websocket", name = "path")
+	public static class WebSocketConfiguration {
+
+		@Bean
+		@ConditionalOnMissingBean
+		public GraphQlWebSocketHandler graphQlWebSocketHandler(WebGraphQlHandler webGraphQlHandler,
+				GraphQlProperties properties, HttpMessageConverters converters) {
+
+			return new GraphQlWebSocketHandler(webGraphQlHandler, getJsonConverter(converters),
+					properties.getWebsocket().getConnectionInitTimeout());
+		}
+
+		@SuppressWarnings("unchecked")
+		private static GenericHttpMessageConverter<Object> getJsonConverter(HttpMessageConverters converters) {
+			return converters.getConverters().stream()
+					.filter((candidate) -> candidate.canRead(Map.class, MediaType.APPLICATION_JSON)).findFirst()
+					.map((converter) -> (GenericHttpMessageConverter<Object>) converter)
+					.orElseThrow(() -> new IllegalStateException("No JSON converter"));
+		}
+
+		@Bean
+		public HandlerMapping graphQlWebSocketMapping(GraphQlWebSocketHandler handler, GraphQlProperties properties) {
+			String path = properties.getWebsocket().getPath();
+			if (logger.isInfoEnabled()) {
+				logger.info("GraphQL endpoint WebSocket " + path);
+			}
+			WebSocketHandlerMapping mapping = new WebSocketHandlerMapping();
+			mapping.setWebSocketUpgradeMatch(true);
+			mapping.setUrlMap(Collections.singletonMap(path,
+					new WebSocketHttpRequestHandler(handler, new DefaultHandshakeHandler())));
+			mapping.setOrder(2); // Ahead of HTTP endpoint ("routerFunctionMapping" bean)
+			return mapping;
+		}
+
+	}
+
+}

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/graphql/servlet/package-info.java

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2020-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Auto-configuration classes for MVC support in Spring GraphQL.
+ */
+package org.springframework.boot.autoconfigure.graphql.servlet;

spring-boot-project/spring-boot-autoconfigure/src/main/resources/META-INF/additional-spring-configuration-metadata.json

@@ -951,6 +951,14 @@
         "level": "error"
       }
     },
+    {
+      "name": "spring.graphql.schema.locations",
+      "defaultValue": "classpath:graphql/**/"
+    },
+    {
+      "name": "spring.graphql.schema.file-extensions",
+      "defaultValue": ".graphqls,.gqls"
+    },
     {
       "name": "spring.groovy.template.prefix",
       "defaultValue": ""
@@ -2190,6 +2198,45 @@
         }
       ]
     },
+    {
+      "name": "spring.graphql.cors.allowed-headers",
+      "values": [
+        {
+          "value": "*"
+        }
+      ],
+      "providers": [
+        {
+          "name": "any"
+        }
+      ]
+    },
+    {
+      "name": "spring.graphql.cors.allowed-methods",
+      "values": [
+        {
+          "value": "*"
+        }
+      ],
+      "providers": [
+        {
+          "name": "any"
+        }
+      ]
+    },
+    {
+      "name": "spring.graphql.cors.allowed-origins",
+      "values": [
+        {
+          "value": "*"
+        }
+      ],
+      "providers": [
+        {
+          "name": "any"
+        }
+      ]
+    },
     {
       "name": "spring.jmx.server",
       "providers": [

spring-boot-project/spring-boot-autoconfigure/src/main/resources/META-INF/spring.factories

@@ -64,6 +64,15 @@ org.springframework.boot.autoconfigure.data.web.SpringDataWebAutoConfiguration,\
 org.springframework.boot.autoconfigure.elasticsearch.ElasticsearchRestClientAutoConfiguration,\
 org.springframework.boot.autoconfigure.flyway.FlywayAutoConfiguration,\
 org.springframework.boot.autoconfigure.freemarker.FreeMarkerAutoConfiguration,\
+org.springframework.boot.autoconfigure.graphql.GraphQlAutoConfiguration,\
+org.springframework.boot.autoconfigure.graphql.data.GraphQlReactiveQueryByExampleAutoConfiguration,\
+org.springframework.boot.autoconfigure.graphql.data.GraphQlReactiveQuerydslAutoConfiguration,\
+org.springframework.boot.autoconfigure.graphql.data.GraphQlQueryByExampleAutoConfiguration,\
+org.springframework.boot.autoconfigure.graphql.data.GraphQlQuerydslAutoConfiguration,\
+org.springframework.boot.autoconfigure.graphql.reactive.GraphQlWebFluxAutoConfiguration,\
+org.springframework.boot.autoconfigure.graphql.servlet.GraphQlWebMvcAutoConfiguration,\
+org.springframework.boot.autoconfigure.graphql.security.GraphQlWebFluxSecurityAutoConfiguration,\
+org.springframework.boot.autoconfigure.graphql.security.GraphQlWebMvcSecurityAutoConfiguration,\
 org.springframework.boot.autoconfigure.groovy.template.GroovyTemplateAutoConfiguration,\
 org.springframework.boot.autoconfigure.gson.GsonAutoConfiguration,\
 org.springframework.boot.autoconfigure.hateoas.HypermediaAutoConfiguration,\
@@ -152,6 +161,7 @@ org.springframework.boot.diagnostics.FailureAnalyzer=\
 org.springframework.boot.autoconfigure.data.redis.RedisUrlSyntaxFailureAnalyzer,\
 org.springframework.boot.autoconfigure.diagnostics.analyzer.NoSuchBeanDefinitionFailureAnalyzer,\
 org.springframework.boot.autoconfigure.flyway.FlywayMigrationScriptMissingFailureAnalyzer,\
+org.springframework.boot.autoconfigure.graphql.InvalidSchemaLocationsExceptionFailureAnalyzer,\
 org.springframework.boot.autoconfigure.jdbc.DataSourceBeanCreationFailureAnalyzer,\
 org.springframework.boot.autoconfigure.jdbc.HikariDriverConfigurationFailureAnalyzer,\
 org.springframework.boot.autoconfigure.r2dbc.ConnectionFactoryBeanCreationFailureAnalyzer,\

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/graphql/Book.java

@@ -0,0 +1,79 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.autoconfigure.graphql;
+
+import org.springframework.data.annotation.Id;
+
+/**
+ * Sample class for
+ *
+ * @author Brian Clozel
+ */
+public class Book {
+
+	@Id
+	String id;
+
+	String name;
+
+	int pageCount;
+
+	String author;
+
+	public Book() {
+	}
+
+	public Book(String id, String name, int pageCount, String author) {
+		this.id = id;
+		this.name = name;
+		this.pageCount = pageCount;
+		this.author = author;
+	}
+
+	public String getId() {
+		return this.id;
+	}
+
+	public void setId(String id) {
+		this.id = id;
+	}
+
+	public String getName() {
+		return this.name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	public int getPageCount() {
+		return this.pageCount;
+	}
+
+	public void setPageCount(int pageCount) {
+		this.pageCount = pageCount;
+	}
+
+	public String getAuthor() {
+		return this.author;
+	}
+
+	public void setAuthor(String author) {
+		this.author = author;
+	}
+
+}

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/graphql/GraphQlAutoConfigurationTests.java

@@ -0,0 +1,230 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.autoconfigure.graphql;
+
+import graphql.GraphQL;
+import graphql.execution.instrumentation.ChainedInstrumentation;
+import graphql.execution.instrumentation.Instrumentation;
+import graphql.schema.GraphQLSchema;
+import graphql.schema.idl.RuntimeWiring;
+import org.assertj.core.api.InstanceOfAssertFactories;
+import org.junit.jupiter.api.Test;
+
+import org.springframework.boot.autoconfigure.AutoConfigurations;
+import org.springframework.boot.test.context.runner.ApplicationContextRunner;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.io.ClassPathResource;
+import org.springframework.graphql.GraphQlService;
+import org.springframework.graphql.data.method.annotation.support.AnnotatedControllerConfigurer;
+import org.springframework.graphql.execution.BatchLoaderRegistry;
+import org.springframework.graphql.execution.DataFetcherExceptionResolver;
+import org.springframework.graphql.execution.GraphQlSource;
+import org.springframework.graphql.execution.MissingSchemaException;
+import org.springframework.graphql.execution.RuntimeWiringConfigurer;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.Mockito.mock;
+
+/**
+ * Tests for {@link GraphQlAutoConfiguration}.
+ */
+class GraphQlAutoConfigurationTests {
+
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+			.withConfiguration(AutoConfigurations.of(GraphQlAutoConfiguration.class));
+
+	@Test
+	void shouldContributeDefaultBeans() {
+		this.contextRunner.run((context) -> {
+			assertThat(context).hasSingleBean(GraphQlSource.class);
+			assertThat(context).hasSingleBean(BatchLoaderRegistry.class);
+			assertThat(context).hasSingleBean(GraphQlService.class);
+			assertThat(context).hasSingleBean(AnnotatedControllerConfigurer.class);
+		});
+	}
+
+	@Test
+	void schemaShouldScanNestedFolders() {
+		this.contextRunner.run((context) -> {
+			assertThat(context).hasSingleBean(GraphQlSource.class);
+			GraphQlSource graphQlSource = context.getBean(GraphQlSource.class);
+			GraphQLSchema schema = graphQlSource.schema();
+			assertThat(schema.getObjectType("Book")).isNotNull();
+		});
+	}
+
+	@Test
+	void shouldFailWhenSchemaFileIsMissing() {
+		this.contextRunner.withPropertyValues("spring.graphql.schema.locations:classpath:missing/").run((context) -> {
+			assertThat(context).hasFailed();
+			assertThat(context).getFailure().getRootCause().isInstanceOf(MissingSchemaException.class);
+		});
+	}
+
+	@Test
+	void shouldUseProgrammaticallyDefinedBuilder() {
+		this.contextRunner.withUserConfiguration(CustomGraphQlBuilderConfiguration.class).run((context) -> {
+			assertThat(context).hasBean("customGraphQlSourceBuilder");
+			assertThat(context).hasSingleBean(GraphQlSource.Builder.class);
+		});
+	}
+
+	@Test
+	void shouldScanLocationsWithCustomExtension() {
+		this.contextRunner.withPropertyValues("spring.graphql.schema.file-extensions:.graphqls,.custom")
+				.run((context) -> {
+					assertThat(context).hasSingleBean(GraphQlSource.class);
+					GraphQlSource graphQlSource = context.getBean(GraphQlSource.class);
+					GraphQLSchema schema = graphQlSource.schema();
+					assertThat(schema.getObjectType("Book")).isNotNull();
+					assertThat(schema.getObjectType("Person")).isNotNull();
+				});
+	}
+
+	@Test
+	void shouldBackOffWithCustomGraphQlSource() {
+		this.contextRunner.withUserConfiguration(CustomGraphQlSourceConfiguration.class).run((context) -> {
+			assertThat(context).getBeanNames(GraphQlSource.class).containsOnly("customGraphQlSource");
+			assertThat(context).hasSingleBean(GraphQlProperties.class);
+		});
+	}
+
+	@Test
+	void shouldConfigureDataFetcherExceptionResolvers() {
+		this.contextRunner.withUserConfiguration(DataFetcherExceptionResolverConfiguration.class).run((context) -> {
+			GraphQlSource graphQlSource = context.getBean(GraphQlSource.class);
+			GraphQL graphQL = graphQlSource.graphQl();
+			assertThat(graphQL.getQueryStrategy()).extracting("dataFetcherExceptionHandler")
+					.satisfies((exceptionHandler) -> assertThat(exceptionHandler.getClass().getName())
+							.endsWith("ExceptionResolversExceptionHandler"));
+		});
+	}
+
+	@Test
+	void shouldConfigureInstrumentation() {
+		this.contextRunner.withUserConfiguration(InstrumentationConfiguration.class).run((context) -> {
+			GraphQlSource graphQlSource = context.getBean(GraphQlSource.class);
+			Instrumentation customInstrumentation = context.getBean("customInstrumentation", Instrumentation.class);
+			GraphQL graphQL = graphQlSource.graphQl();
+			assertThat(graphQL).extracting("instrumentation").isInstanceOf(ChainedInstrumentation.class)
+					.extracting("instrumentations", InstanceOfAssertFactories.iterable(Instrumentation.class))
+					.contains(customInstrumentation);
+		});
+	}
+
+	@Test
+	void shouldApplyRuntimeWiringConfigurers() {
+		this.contextRunner.withUserConfiguration(RuntimeWiringConfigurerConfiguration.class).run((context) -> {
+			RuntimeWiringConfigurerConfiguration.CustomRuntimeWiringConfigurer configurer = context
+					.getBean(RuntimeWiringConfigurerConfiguration.CustomRuntimeWiringConfigurer.class);
+			assertThat(configurer.applied).isTrue();
+		});
+	}
+
+	@Test
+	void shouldApplyGraphQlSourceBuilderCustomizer() {
+		this.contextRunner.withUserConfiguration(GraphQlSourceBuilderCustomizerConfiguration.class).run((context) -> {
+			GraphQlSourceBuilderCustomizerConfiguration.CustomGraphQlSourceBuilderCustomizer customizer = context
+					.getBean(GraphQlSourceBuilderCustomizerConfiguration.CustomGraphQlSourceBuilderCustomizer.class);
+			assertThat(customizer.applied).isTrue();
+		});
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	static class CustomGraphQlBuilderConfiguration {
+
+		@Bean
+		GraphQlSource.Builder customGraphQlSourceBuilder() {
+			return GraphQlSource.builder().schemaResources(new ClassPathResource("graphql/schema.graphqls"),
+					new ClassPathResource("graphql/types/book.graphqls"));
+		}
+
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	static class CustomGraphQlSourceConfiguration {
+
+		@Bean
+		GraphQlSource customGraphQlSource() {
+			return mock(GraphQlSource.class);
+		}
+
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	static class DataFetcherExceptionResolverConfiguration {
+
+		@Bean
+		DataFetcherExceptionResolver customDataFetcherExceptionResolver() {
+			return mock(DataFetcherExceptionResolver.class);
+		}
+
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	static class InstrumentationConfiguration {
+
+		@Bean
+		Instrumentation customInstrumentation() {
+			return mock(Instrumentation.class);
+		}
+
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	static class RuntimeWiringConfigurerConfiguration {
+
+		@Bean
+		CustomRuntimeWiringConfigurer customRuntimeWiringConfigurer() {
+			return new CustomRuntimeWiringConfigurer();
+		}
+
+		public static class CustomRuntimeWiringConfigurer implements RuntimeWiringConfigurer {
+
+			public boolean applied = false;
+
+			@Override
+			public void configure(RuntimeWiring.Builder builder) {
+				this.applied = true;
+			}
+
+		}
+
+	}
+
+	static class GraphQlSourceBuilderCustomizerConfiguration {
+
+		@Bean
+		CustomGraphQlSourceBuilderCustomizer customGraphQlSourceBuilderCustomizer() {
+			return new CustomGraphQlSourceBuilderCustomizer();
+		}
+
+		public static class CustomGraphQlSourceBuilderCustomizer implements GraphQlSourceBuilderCustomizer {
+
+			public boolean applied = false;
+
+			@Override
+			public void customize(GraphQlSource.Builder builder) {
+				this.applied = true;
+			}
+
+		}
+
+	}
+
+}

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/graphql/GraphQlTestDataFetchers.java

@@ -0,0 +1,59 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.autoconfigure.graphql;
+
+import java.util.Arrays;
+import java.util.List;
+
+import graphql.schema.DataFetcher;
+import reactor.core.publisher.Flux;
+
+import org.springframework.lang.Nullable;
+
+/**
+ * Test utility class holding {@link DataFetcher} implementations.
+ *
+ * @author Brian Clozel
+ */
+public final class GraphQlTestDataFetchers {
+
+	private static List<Book> books = Arrays.asList(new Book("book-1", "GraphQL for beginners", 100, "John GraphQL"),
+			new Book("book-2", "Harry Potter and the Philosopher's Stone", 223, "Joanne Rowling"),
+			new Book("book-3", "Moby Dick", 635, "Moby Dick"), new Book("book-3", "Moby Dick", 635, "Moby Dick"));
+
+	private GraphQlTestDataFetchers() {
+
+	}
+
+	public static DataFetcher getBookByIdDataFetcher() {
+		return (environment) -> getBookById(environment.getArgument("id"));
+	}
+
+	public static DataFetcher getBooksOnSaleDataFetcher() {
+		return (environment) -> getBooksOnSale(environment.getArgument("minPages"));
+	}
+
+	@Nullable
+	public static Book getBookById(String id) {
+		return books.stream().filter((book) -> book.getId().equals(id)).findFirst().orElse(null);
+	}
+
+	public static Flux<Book> getBooksOnSale(int minPages) {
+		return Flux.fromIterable(books).filter((book) -> book.getPageCount() >= minPages);
+	}
+
+}

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/graphql/InvalidSchemaLocationsExceptionFailureAnalyzerTests.java

@@ -0,0 +1,69 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.autoconfigure.graphql;
+
+import org.junit.jupiter.api.Test;
+
+import org.springframework.boot.diagnostics.FailureAnalysis;
+import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
+import org.springframework.core.io.support.ResourcePatternResolver;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for {@link InvalidSchemaLocationsExceptionFailureAnalyzer}
+ *
+ * @author Brian Clozel
+ */
+class InvalidSchemaLocationsExceptionFailureAnalyzerTests {
+
+	private final InvalidSchemaLocationsExceptionFailureAnalyzer analyzer = new InvalidSchemaLocationsExceptionFailureAnalyzer();
+
+	private final ResourcePatternResolver resolver = new PathMatchingResourcePatternResolver();
+
+	private final String[] missingLocation = new String[] {
+			"classpath:org/springframework/boot/autoconfigure/graphql/missing/" };
+
+	private final String[] existingLocation = new String[] {
+			"classpath:org/springframework/boot/autoconfigure/graphql/" };
+
+	@Test
+	void shouldReportCause() {
+		InvalidSchemaLocationsException exception = new InvalidSchemaLocationsException(this.existingLocation,
+				this.resolver);
+		FailureAnalysis analysis = this.analyzer.analyze(exception);
+		assertThat(analysis.getCause()).isInstanceOf(InvalidSchemaLocationsException.class);
+		assertThat(analysis.getAction()).contains("Check that the following locations contain schema files:");
+	}
+
+	@Test
+	void shouldListUnresolvableLocation() {
+		InvalidSchemaLocationsException exception = new InvalidSchemaLocationsException(this.missingLocation,
+				this.resolver);
+		FailureAnalysis analysis = this.analyzer.analyze(exception);
+		assertThat(analysis.getAction()).contains(this.existingLocation[0]).doesNotContain("file:");
+	}
+
+	@Test
+	void shouldListExistingLocation() {
+		InvalidSchemaLocationsException exception = new InvalidSchemaLocationsException(this.existingLocation,
+				this.resolver);
+		FailureAnalysis analysis = this.analyzer.analyze(exception);
+		assertThat(analysis.getAction()).contains(this.existingLocation[0]).contains("file:");
+	}
+
+}

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/graphql/InvalidSchemaLocationsExceptionTests.java

@@ -0,0 +1,71 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.autoconfigure.graphql;
+
+import org.junit.jupiter.api.Test;
+
+import org.springframework.core.io.support.PathMatchingResourcePatternResolver;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatIllegalArgumentException;
+
+/**
+ * Tests for {@link InvalidSchemaLocationsException}.
+ *
+ * @author Brian Clozel
+ */
+class InvalidSchemaLocationsExceptionTests {
+
+	private final String schemaFolder = "graphql/";
+
+	private final String[] locations = new String[] { "classpath:" + this.schemaFolder };
+
+	@Test
+	void shouldRejectEmptyLocations() {
+		assertThatIllegalArgumentException().isThrownBy(
+				() -> new InvalidSchemaLocationsException(new String[] {}, new PathMatchingResourcePatternResolver()))
+				.isInstanceOf(IllegalArgumentException.class).withMessage("locations should not be empty");
+	}
+
+	@Test
+	void shouldRejectNullResolver() {
+		assertThatIllegalArgumentException().isThrownBy(() -> new InvalidSchemaLocationsException(this.locations, null))
+				.isInstanceOf(IllegalArgumentException.class).withMessage("resolver should not be null");
+	}
+
+	@Test
+	void shouldExposeConfiguredLocations() {
+		InvalidSchemaLocationsException exception = new InvalidSchemaLocationsException(this.locations,
+				new PathMatchingResourcePatternResolver());
+		assertThat(exception.getSchemaLocations()).hasSize(1);
+		InvalidSchemaLocationsException.SchemaLocation schemaLocation = exception.getSchemaLocations().get(0);
+		assertThat(schemaLocation.getLocation()).isEqualTo(this.locations[0]);
+		assertThat(schemaLocation.getUri()).endsWith(this.schemaFolder);
+	}
+
+	@Test
+	void shouldNotFailWithUnresolvableLocations() {
+		String unresolved = "classpath:unresolved/";
+		InvalidSchemaLocationsException exception = new InvalidSchemaLocationsException(new String[] { unresolved },
+				new PathMatchingResourcePatternResolver());
+		assertThat(exception.getSchemaLocations()).hasSize(1);
+		InvalidSchemaLocationsException.SchemaLocation schemaLocation = exception.getSchemaLocations().get(0);
+		assertThat(schemaLocation.getLocation()).isEqualTo(unresolved);
+		assertThat(schemaLocation.getUri()).isEmpty();
+	}
+
+}

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/graphql/QBook.java

@@ -0,0 +1,56 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.autoconfigure.graphql;
+
+import com.querydsl.core.types.Path;
+import com.querydsl.core.types.PathMetadata;
+import com.querydsl.core.types.PathMetadataFactory;
+import com.querydsl.core.types.dsl.EntityPathBase;
+import com.querydsl.core.types.dsl.NumberPath;
+import com.querydsl.core.types.dsl.StringPath;
+
+/**
+ * QBook is a Querydsl query type for Book. This class is usually generated by the
+ * Querydsl annotation processor.
+ */
+public class QBook extends EntityPathBase<Book> {
+
+	private static final long serialVersionUID = -1932588188L;
+
+	public static final QBook book = new QBook("book");
+
+	public final StringPath author = createString("author");
+
+	public final StringPath id = createString("id");
+
+	public final StringPath name = createString("name");
+
+	public final NumberPath<Integer> pageCount = createNumber("pageCount", Integer.class);
+
+	public QBook(String variable) {
+		super(Book.class, PathMetadataFactory.forVariable(variable));
+	}
+
+	public QBook(Path<? extends Book> path) {
+		super(path.getType(), path.getMetadata());
+	}
+
+	public QBook(PathMetadata metadata) {
+		super(Book.class, metadata);
+	}
+
+}

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/graphql/data/GraphQlQueryByExampleAutoConfigurationTests.java

@@ -0,0 +1,81 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.autoconfigure.graphql.data;
+
+import java.util.Optional;
+
+import org.junit.jupiter.api.Test;
+
+import org.springframework.boot.autoconfigure.AutoConfigurations;
+import org.springframework.boot.autoconfigure.graphql.Book;
+import org.springframework.boot.autoconfigure.graphql.GraphQlAutoConfiguration;
+import org.springframework.boot.test.context.runner.WebApplicationContextRunner;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.repository.CrudRepository;
+import org.springframework.data.repository.query.QueryByExampleExecutor;
+import org.springframework.graphql.GraphQlService;
+import org.springframework.graphql.data.GraphQlRepository;
+import org.springframework.graphql.test.tester.GraphQlTester;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.BDDMockito.given;
+import static org.mockito.Mockito.mock;
+
+/**
+ * Tests for {@link GraphQlQueryByExampleAutoConfiguration}
+ *
+ * @author Brian Clozel
+ */
+class GraphQlQueryByExampleAutoConfigurationTests {
+
+	private static final Book book = new Book("42", "Test title", 42, "Test Author");
+
+	private final WebApplicationContextRunner contextRunner = new WebApplicationContextRunner()
+			.withConfiguration(
+					AutoConfigurations.of(GraphQlAutoConfiguration.class, GraphQlQueryByExampleAutoConfiguration.class))
+			.withUserConfiguration(MockRepositoryConfig.class)
+			.withPropertyValues("spring.main.web-application-type=reactive");
+
+	@Test
+	void shouldRegisterDataFetcherForQueryByExampleRepositories() {
+		this.contextRunner.run((context) -> {
+			GraphQlService graphQlService = context.getBean(GraphQlService.class);
+			GraphQlTester graphQlTester = GraphQlTester.create(graphQlService);
+			graphQlTester.query("{ bookById(id: 1) {name}}").execute().path("bookById.name").entity(String.class)
+					.isEqualTo("Test title");
+		});
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	static class MockRepositoryConfig {
+
+		@Bean
+		MockRepository mockRepository() {
+			MockRepository mockRepository = mock(MockRepository.class);
+			given(mockRepository.findBy(any(), any())).willReturn(Optional.of(book));
+			return mockRepository;
+		}
+
+	}
+
+	@GraphQlRepository
+	interface MockRepository extends CrudRepository<Book, Long>, QueryByExampleExecutor<Book> {
+
+	}
+
+}

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/graphql/data/GraphQlQuerydslAutoConfigurationTests.java

@@ -0,0 +1,81 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.autoconfigure.graphql.data;
+
+import java.util.Optional;
+
+import org.junit.jupiter.api.Test;
+
+import org.springframework.boot.autoconfigure.AutoConfigurations;
+import org.springframework.boot.autoconfigure.graphql.Book;
+import org.springframework.boot.autoconfigure.graphql.GraphQlAutoConfiguration;
+import org.springframework.boot.test.context.runner.WebApplicationContextRunner;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.querydsl.QuerydslPredicateExecutor;
+import org.springframework.data.repository.CrudRepository;
+import org.springframework.graphql.GraphQlService;
+import org.springframework.graphql.data.GraphQlRepository;
+import org.springframework.graphql.test.tester.GraphQlTester;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.BDDMockito.given;
+import static org.mockito.Mockito.mock;
+
+/**
+ * Tests for {@link GraphQlQuerydslAutoConfiguration}.
+ *
+ * @author Brian Clozel
+ */
+class GraphQlQuerydslAutoConfigurationTests {
+
+	private static final Book book = new Book("42", "Test title", 42, "Test Author");
+
+	private final WebApplicationContextRunner contextRunner = new WebApplicationContextRunner()
+			.withConfiguration(
+					AutoConfigurations.of(GraphQlAutoConfiguration.class, GraphQlQuerydslAutoConfiguration.class))
+			.withUserConfiguration(MockRepositoryConfig.class)
+			.withPropertyValues("spring.main.web-application-type=reactive");
+
+	@Test
+	void shouldRegisterDataFetcherForQueryDslRepositories() {
+		this.contextRunner.run((context) -> {
+			GraphQlService graphQlService = context.getBean(GraphQlService.class);
+			GraphQlTester graphQlTester = GraphQlTester.create(graphQlService);
+			graphQlTester.query("{ bookById(id: 1) {name}}").execute().path("bookById.name").entity(String.class)
+					.isEqualTo("Test title");
+		});
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	static class MockRepositoryConfig {
+
+		@Bean
+		MockRepository mockRepository() {
+			MockRepository mockRepository = mock(MockRepository.class);
+			given(mockRepository.findBy(any(), any())).willReturn(Optional.of(book));
+			return mockRepository;
+		}
+
+	}
+
+	@GraphQlRepository
+	interface MockRepository extends CrudRepository<Book, Long>, QuerydslPredicateExecutor<Book> {
+
+	}
+
+}

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/graphql/data/GraphQlReactiveQueryByExampleAutoConfigurationTests.java

@@ -0,0 +1,80 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.autoconfigure.graphql.data;
+
+import org.junit.jupiter.api.Test;
+import reactor.core.publisher.Mono;
+
+import org.springframework.boot.autoconfigure.AutoConfigurations;
+import org.springframework.boot.autoconfigure.graphql.Book;
+import org.springframework.boot.autoconfigure.graphql.GraphQlAutoConfiguration;
+import org.springframework.boot.test.context.runner.ReactiveWebApplicationContextRunner;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.repository.query.ReactiveQueryByExampleExecutor;
+import org.springframework.data.repository.reactive.ReactiveCrudRepository;
+import org.springframework.graphql.GraphQlService;
+import org.springframework.graphql.data.GraphQlRepository;
+import org.springframework.graphql.test.tester.GraphQlTester;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.BDDMockito.given;
+import static org.mockito.Mockito.mock;
+
+/**
+ * Tests for {@link GraphQlReactiveQueryByExampleAutoConfiguration}
+ *
+ * @author Brian Clozel
+ */
+class GraphQlReactiveQueryByExampleAutoConfigurationTests {
+
+	private static final Mono<Book> bookPublisher = Mono.just(new Book("42", "Test title", 42, "Test Author"));
+
+	private final ReactiveWebApplicationContextRunner contextRunner = new ReactiveWebApplicationContextRunner()
+			.withConfiguration(AutoConfigurations.of(GraphQlAutoConfiguration.class,
+					GraphQlReactiveQueryByExampleAutoConfiguration.class))
+			.withUserConfiguration(MockRepositoryConfig.class)
+			.withPropertyValues("spring.main.web-application-type=reactive");
+
+	@Test
+	void shouldRegisterDataFetcherForQueryByExampleRepositories() {
+		this.contextRunner.run((context) -> {
+			GraphQlService graphQlService = context.getBean(GraphQlService.class);
+			GraphQlTester graphQlTester = GraphQlTester.create(graphQlService);
+			graphQlTester.query("{ bookById(id: 1) {name}}").execute().path("bookById.name").entity(String.class)
+					.isEqualTo("Test title");
+		});
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	static class MockRepositoryConfig {
+
+		@Bean
+		MockRepository mockRepository() {
+			MockRepository mockRepository = mock(MockRepository.class);
+			given(mockRepository.findBy(any(), any())).willReturn(bookPublisher);
+			return mockRepository;
+		}
+
+	}
+
+	@GraphQlRepository
+	interface MockRepository extends ReactiveCrudRepository<Book, Long>, ReactiveQueryByExampleExecutor<Book> {
+
+	}
+
+}

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/graphql/data/GraphQlReactiveQuerydslAutoConfigurationTests.java

@@ -0,0 +1,80 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.autoconfigure.graphql.data;
+
+import org.junit.jupiter.api.Test;
+import reactor.core.publisher.Mono;
+
+import org.springframework.boot.autoconfigure.AutoConfigurations;
+import org.springframework.boot.autoconfigure.graphql.Book;
+import org.springframework.boot.autoconfigure.graphql.GraphQlAutoConfiguration;
+import org.springframework.boot.test.context.runner.ReactiveWebApplicationContextRunner;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.data.querydsl.ReactiveQuerydslPredicateExecutor;
+import org.springframework.data.repository.reactive.ReactiveCrudRepository;
+import org.springframework.graphql.GraphQlService;
+import org.springframework.graphql.data.GraphQlRepository;
+import org.springframework.graphql.test.tester.GraphQlTester;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.BDDMockito.given;
+import static org.mockito.Mockito.mock;
+
+/**
+ * Tests for {@link GraphQlReactiveQuerydslAutoConfiguration}
+ *
+ * @author Brian Clozel
+ */
+class GraphQlReactiveQuerydslAutoConfigurationTests {
+
+	private static final Mono<Book> bookPublisher = Mono.just(new Book("42", "Test title", 42, "Test Author"));
+
+	private final ReactiveWebApplicationContextRunner contextRunner = new ReactiveWebApplicationContextRunner()
+			.withConfiguration(AutoConfigurations.of(GraphQlAutoConfiguration.class,
+					GraphQlReactiveQuerydslAutoConfiguration.class))
+			.withUserConfiguration(MockRepositoryConfig.class)
+			.withPropertyValues("spring.main.web-application-type=reactive");
+
+	@Test
+	void shouldRegisterDataFetcherForQueryDslRepositories() {
+		this.contextRunner.run((context) -> {
+			GraphQlService graphQlService = context.getBean(GraphQlService.class);
+			GraphQlTester graphQlTester = GraphQlTester.create(graphQlService);
+			graphQlTester.query("{ bookById(id: 1) {name}}").execute().path("bookById.name").entity(String.class)
+					.isEqualTo("Test title");
+		});
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	static class MockRepositoryConfig {
+
+		@Bean
+		MockRepository mockRepository() {
+			MockRepository mockRepository = mock(MockRepository.class);
+			given(mockRepository.findBy(any(), any())).willReturn(bookPublisher);
+			return mockRepository;
+		}
+
+	}
+
+	@GraphQlRepository
+	interface MockRepository extends ReactiveCrudRepository<Book, Long>, ReactiveQuerydslPredicateExecutor<Book> {
+
+	}
+
+}

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/graphql/reactive/GraphQlWebFluxAutoConfigurationTests.java

@@ -0,0 +1,182 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.autoconfigure.graphql.reactive;
+
+import java.util.Collections;
+import java.util.function.Consumer;
+
+import graphql.schema.idl.TypeRuntimeWiring;
+import org.junit.jupiter.api.Test;
+
+import org.springframework.boot.autoconfigure.AutoConfigurations;
+import org.springframework.boot.autoconfigure.graphql.GraphQlAutoConfiguration;
+import org.springframework.boot.autoconfigure.graphql.GraphQlTestDataFetchers;
+import org.springframework.boot.autoconfigure.http.codec.CodecsAutoConfiguration;
+import org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration;
+import org.springframework.boot.autoconfigure.web.reactive.HttpHandlerAutoConfiguration;
+import org.springframework.boot.autoconfigure.web.reactive.WebFluxAutoConfiguration;
+import org.springframework.boot.test.context.runner.ReactiveWebApplicationContextRunner;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.graphql.execution.RuntimeWiringConfigurer;
+import org.springframework.graphql.web.WebGraphQlHandler;
+import org.springframework.graphql.web.WebInterceptor;
+import org.springframework.graphql.web.webflux.GraphQlHttpHandler;
+import org.springframework.graphql.web.webflux.GraphQlWebSocketHandler;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.test.web.reactive.server.WebTestClient;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.hamcrest.Matchers.containsString;
+
+/**
+ * Tests for {@link GraphQlWebFluxAutoConfiguration}
+ *
+ * @author Brian Clozel
+ */
+class GraphQlWebFluxAutoConfigurationTests {
+
+	private static final String BASE_URL = "https://spring.example.org/";
+
+	private final ReactiveWebApplicationContextRunner contextRunner = new ReactiveWebApplicationContextRunner()
+			.withConfiguration(AutoConfigurations.of(HttpHandlerAutoConfiguration.class, WebFluxAutoConfiguration.class,
+					CodecsAutoConfiguration.class, JacksonAutoConfiguration.class, GraphQlAutoConfiguration.class,
+					GraphQlWebFluxAutoConfiguration.class))
+			.withUserConfiguration(DataFetchersConfiguration.class, CustomWebInterceptor.class)
+			.withPropertyValues("spring.main.web-application-type=reactive", "spring.graphql.graphiql.enabled=true",
+					"spring.graphql.schema.printer.enabled=true",
+					"spring.graphql.cors.allowed-origins=https://example.com",
+					"spring.graphql.cors.allowed-methods=POST", "spring.graphql.cors.allow-credentials=true");
+
+	@Test
+	void shouldContributeDefaultBeans() {
+		this.contextRunner.run((context) -> assertThat(context).hasSingleBean(GraphQlHttpHandler.class)
+				.hasSingleBean(WebGraphQlHandler.class).doesNotHaveBean(GraphQlWebSocketHandler.class));
+	}
+
+	@Test
+	void simpleQueryShouldWork() {
+		testWithWebClient((client) -> {
+			String query = "{ bookById(id: \\\"book-1\\\"){ id name pageCount author } }";
+			client.post().uri("/graphql").bodyValue("{  \"query\": \"" + query + "\"}").exchange().expectStatus().isOk()
+					.expectBody().jsonPath("data.bookById.name").isEqualTo("GraphQL for beginners");
+		});
+	}
+
+	@Test
+	void httpGetQueryShouldBeSupported() {
+		testWithWebClient((client) -> {
+			String query = "{ bookById(id: \\\"book-1\\\"){ id name pageCount author } }";
+			client.get().uri("/graphql?query={query}", "{  \"query\": \"" + query + "\"}").exchange().expectStatus()
+					.isEqualTo(HttpStatus.METHOD_NOT_ALLOWED).expectHeader().valueEquals("Allow", "POST");
+		});
+	}
+
+	@Test
+	void shouldRejectMissingQuery() {
+		testWithWebClient(
+				(client) -> client.post().uri("/graphql").bodyValue("{}").exchange().expectStatus().isBadRequest());
+	}
+
+	@Test
+	void shouldRejectQueryWithInvalidJson() {
+		testWithWebClient(
+				(client) -> client.post().uri("/graphql").bodyValue(":)").exchange().expectStatus().isBadRequest());
+	}
+
+	@Test
+	void shouldConfigureWebInterceptors() {
+		testWithWebClient((client) -> {
+			String query = "{ bookById(id: \\\"book-1\\\"){ id name pageCount author } }";
+
+			client.post().uri("/graphql").bodyValue("{  \"query\": \"" + query + "\"}").exchange().expectStatus().isOk()
+					.expectHeader().valueEquals("X-Custom-Header", "42");
+		});
+	}
+
+	@Test
+	void shouldExposeSchemaEndpoint() {
+		testWithWebClient((client) -> client.get().uri("/graphql/schema").accept(MediaType.ALL).exchange()
+				.expectStatus().isOk().expectHeader().contentType(MediaType.TEXT_PLAIN).expectBody(String.class)
+				.value(containsString("type Book")));
+	}
+
+	@Test
+	void shouldExposeGraphiqlEndpoint() {
+		testWithWebClient((client) -> {
+			client.get().uri("/graphiql").exchange().expectStatus().is3xxRedirection().expectHeader()
+					.location("https://spring.example.org/graphiql?path=/graphql");
+			client.get().uri("/graphiql?path=/graphql").accept(MediaType.ALL).exchange().expectStatus().isOk()
+					.expectHeader().contentType(MediaType.TEXT_HTML);
+		});
+	}
+
+	@Test
+	void shouldSupportCors() {
+		testWithWebClient((client) -> {
+			String query = "{" + "  bookById(id: \\\"book-1\\\"){ " + "    id" + "    name" + "    pageCount"
+					+ "    author" + "  }" + "}";
+			client.post().uri("/graphql").bodyValue("{  \"query\": \"" + query + "\"}")
+					.header(HttpHeaders.ACCESS_CONTROL_REQUEST_METHOD, "POST")
+					.header(HttpHeaders.ORIGIN, "https://example.com").exchange().expectStatus().isOk().expectHeader()
+					.valueEquals(HttpHeaders.ACCESS_CONTROL_ALLOW_ORIGIN, "https://example.com").expectHeader()
+					.valueEquals(HttpHeaders.ACCESS_CONTROL_ALLOW_CREDENTIALS, "true");
+		});
+	}
+
+	@Test
+	void shouldConfigureWebSocketBeans() {
+		this.contextRunner.withPropertyValues("spring.graphql.websocket.path=/ws")
+				.run((context) -> assertThat(context).hasSingleBean(GraphQlWebSocketHandler.class));
+	}
+
+	private void testWithWebClient(Consumer<WebTestClient> consumer) {
+		this.contextRunner.run((context) -> {
+			WebTestClient client = WebTestClient.bindToApplicationContext(context).configureClient()
+					.defaultHeaders((headers) -> {
+						headers.setContentType(MediaType.APPLICATION_JSON);
+						headers.setAccept(Collections.singletonList(MediaType.APPLICATION_JSON));
+					}).baseUrl(BASE_URL).build();
+			consumer.accept(client);
+		});
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	static class DataFetchersConfiguration {
+
+		@Bean
+		RuntimeWiringConfigurer bookDataFetcher() {
+			return (builder) -> builder.type(TypeRuntimeWiring.newTypeWiring("Query").dataFetcher("bookById",
+					GraphQlTestDataFetchers.getBookByIdDataFetcher()));
+		}
+
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	static class CustomWebInterceptor {
+
+		@Bean
+		WebInterceptor customWebInterceptor() {
+			return (webInput, interceptorChain) -> interceptorChain.next(webInput)
+					.map((output) -> output.transform((builder) -> builder.responseHeader("X-Custom-Header", "42")));
+		}
+
+	}
+
+}

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/graphql/security/GraphQlWebFluxSecurityAutoConfigurationTests.java

@@ -0,0 +1,163 @@
+/*
+ * Copyright 2020-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.autoconfigure.graphql.security;
+
+import java.util.Collections;
+import java.util.function.Consumer;
+
+import graphql.schema.idl.TypeRuntimeWiring;
+import org.junit.jupiter.api.Test;
+import reactor.core.publisher.Mono;
+
+import org.springframework.boot.autoconfigure.AutoConfigurations;
+import org.springframework.boot.autoconfigure.graphql.Book;
+import org.springframework.boot.autoconfigure.graphql.GraphQlAutoConfiguration;
+import org.springframework.boot.autoconfigure.graphql.GraphQlTestDataFetchers;
+import org.springframework.boot.autoconfigure.graphql.reactive.GraphQlWebFluxAutoConfiguration;
+import org.springframework.boot.autoconfigure.http.codec.CodecsAutoConfiguration;
+import org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration;
+import org.springframework.boot.autoconfigure.security.reactive.ReactiveSecurityAutoConfiguration;
+import org.springframework.boot.autoconfigure.web.reactive.HttpHandlerAutoConfiguration;
+import org.springframework.boot.autoconfigure.web.reactive.WebFluxAutoConfiguration;
+import org.springframework.boot.test.context.runner.ReactiveWebApplicationContextRunner;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.graphql.execution.ErrorType;
+import org.springframework.graphql.execution.RuntimeWiringConfigurer;
+import org.springframework.graphql.security.ReactiveSecurityDataFetcherExceptionResolver;
+import org.springframework.http.MediaType;
+import org.springframework.lang.Nullable;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.security.config.annotation.method.configuration.EnableReactiveMethodSecurity;
+import org.springframework.security.config.annotation.web.reactive.EnableWebFluxSecurity;
+import org.springframework.security.config.web.server.ServerHttpSecurity;
+import org.springframework.security.core.userdetails.MapReactiveUserDetailsService;
+import org.springframework.security.core.userdetails.User;
+import org.springframework.security.core.userdetails.UserDetails;
+import org.springframework.security.web.server.SecurityWebFilterChain;
+import org.springframework.test.web.reactive.server.WebTestClient;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.springframework.security.config.Customizer.withDefaults;
+
+/**
+ * Tests for {@link GraphQlWebFluxSecurityAutoConfiguration}.
+ *
+ * @author Brian Clozel
+ */
+class GraphQlWebFluxSecurityAutoConfigurationTests {
+
+	private static final String BASE_URL = "https://spring.example.org/graphql";
+
+	private final ReactiveWebApplicationContextRunner contextRunner = new ReactiveWebApplicationContextRunner()
+			.withConfiguration(AutoConfigurations.of(HttpHandlerAutoConfiguration.class, WebFluxAutoConfiguration.class,
+					CodecsAutoConfiguration.class, JacksonAutoConfiguration.class, GraphQlAutoConfiguration.class,
+					GraphQlWebFluxAutoConfiguration.class, GraphQlWebFluxSecurityAutoConfiguration.class,
+					ReactiveSecurityAutoConfiguration.class))
+			.withUserConfiguration(DataFetchersConfiguration.class, SecurityConfig.class)
+			.withPropertyValues("spring.main.web-application-type=reactive");
+
+	@Test
+	void contributesExceptionResolver() {
+		this.contextRunner.run(
+				(context) -> assertThat(context).hasSingleBean(ReactiveSecurityDataFetcherExceptionResolver.class));
+	}
+
+	@Test
+	void anonymousUserShouldBeUnauthorized() {
+		testWithWebClient((client) -> {
+			String query = "{ bookById(id: \\\"book-1\\\"){ id name pageCount author }}";
+			client.post().uri("").bodyValue("{  \"query\": \"" + query + "\"}").exchange().expectStatus().isOk()
+					.expectBody().jsonPath("data.bookById.name").doesNotExist()
+					.jsonPath("errors[0].extensions.classification").isEqualTo(ErrorType.UNAUTHORIZED.toString());
+		});
+	}
+
+	@Test
+	void authenticatedUserShouldGetData() {
+		testWithWebClient((client) -> {
+			String query = "{ bookById(id: \\\"book-1\\\"){ id name pageCount author }}";
+			client.post().uri("").headers((headers) -> headers.setBasicAuth("rob", "rob"))
+					.bodyValue("{  \"query\": \"" + query + "\"}").exchange().expectStatus().isOk().expectBody()
+					.jsonPath("data.bookById.name").isEqualTo("GraphQL for beginners")
+					.jsonPath("errors[0].extensions.classification").doesNotExist();
+		});
+	}
+
+	private void testWithWebClient(Consumer<WebTestClient> consumer) {
+		this.contextRunner.run((context) -> {
+			WebTestClient client = WebTestClient.bindToApplicationContext(context).configureClient()
+					.defaultHeaders((headers) -> {
+						headers.setContentType(MediaType.APPLICATION_JSON);
+						headers.setAccept(Collections.singletonList(MediaType.APPLICATION_JSON));
+					}).baseUrl(BASE_URL).build();
+			consumer.accept(client);
+		});
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	static class DataFetchersConfiguration {
+
+		@Bean
+		RuntimeWiringConfigurer bookDataFetcher(BookService bookService) {
+			return (builder) -> builder.type(TypeRuntimeWiring.newTypeWiring("Query").dataFetcher("bookById",
+					(env) -> bookService.getBookdById(env.getArgument("id"))));
+		}
+
+		@Bean
+		BookService bookService() {
+			return new BookService();
+		}
+
+	}
+
+	static class BookService {
+
+		@PreAuthorize("hasRole('USER')")
+		@Nullable
+		Mono<Book> getBookdById(String id) {
+			return Mono.justOrEmpty(GraphQlTestDataFetchers.getBookById(id));
+		}
+
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	@EnableWebFluxSecurity
+	@EnableReactiveMethodSecurity
+	static class SecurityConfig {
+
+		@Bean
+		SecurityWebFilterChain springWebFilterChain(ServerHttpSecurity http) throws Exception {
+			return http.csrf((spec) -> spec.disable())
+					// Demonstrate that method security works
+					// Best practice to use both for defense in depth
+					.authorizeExchange((requests) -> requests.anyExchange().permitAll()).httpBasic(withDefaults())
+					.build();
+		}
+
+		@Bean
+		@SuppressWarnings("deprecation")
+		MapReactiveUserDetailsService userDetailsService() {
+			User.UserBuilder userBuilder = User.withDefaultPasswordEncoder();
+			UserDetails rob = userBuilder.username("rob").password("rob").roles("USER").build();
+			UserDetails admin = userBuilder.username("admin").password("admin").roles("USER", "ADMIN").build();
+			return new MapReactiveUserDetailsService(rob, admin);
+		}
+
+	}
+
+}

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/graphql/security/GraphQlWebMvcSecurityAutoConfigurationTests.java

@@ -0,0 +1,179 @@
+/*
+ * Copyright 2020-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.autoconfigure.graphql.security;
+
+import graphql.schema.idl.TypeRuntimeWiring;
+import org.junit.jupiter.api.Test;
+
+import org.springframework.boot.autoconfigure.AutoConfigurations;
+import org.springframework.boot.autoconfigure.graphql.Book;
+import org.springframework.boot.autoconfigure.graphql.GraphQlAutoConfiguration;
+import org.springframework.boot.autoconfigure.graphql.GraphQlTestDataFetchers;
+import org.springframework.boot.autoconfigure.graphql.servlet.GraphQlWebMvcAutoConfiguration;
+import org.springframework.boot.autoconfigure.http.HttpMessageConvertersAutoConfiguration;
+import org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration;
+import org.springframework.boot.autoconfigure.security.servlet.SecurityAutoConfiguration;
+import org.springframework.boot.autoconfigure.web.servlet.DispatcherServletAutoConfiguration;
+import org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration;
+import org.springframework.boot.test.context.runner.WebApplicationContextRunner;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.graphql.execution.ErrorType;
+import org.springframework.graphql.execution.RuntimeWiringConfigurer;
+import org.springframework.graphql.security.SecurityContextThreadLocalAccessor;
+import org.springframework.graphql.security.SecurityDataFetcherExceptionResolver;
+import org.springframework.http.MediaType;
+import org.springframework.lang.Nullable;
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
+import org.springframework.security.config.annotation.web.builders.HttpSecurity;
+import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
+import org.springframework.security.core.userdetails.User;
+import org.springframework.security.core.userdetails.UserDetails;
+import org.springframework.security.provisioning.InMemoryUserDetailsManager;
+import org.springframework.security.web.DefaultSecurityFilterChain;
+import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.test.web.servlet.MvcResult;
+import org.springframework.test.web.servlet.setup.MockMvcBuilders;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.springframework.security.config.Customizer.withDefaults;
+import static org.springframework.security.test.web.servlet.request.SecurityMockMvcRequestPostProcessors.user;
+import static org.springframework.security.test.web.servlet.setup.SecurityMockMvcConfigurers.springSecurity;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.asyncDispatch;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+/**
+ * Tests for {@link GraphQlWebMvcSecurityAutoConfiguration}.
+ *
+ * @author Brian Clozel
+ */
+class GraphQlWebMvcSecurityAutoConfigurationTests {
+
+	private final WebApplicationContextRunner contextRunner = new WebApplicationContextRunner()
+			.withConfiguration(
+					AutoConfigurations.of(DispatcherServletAutoConfiguration.class, WebMvcAutoConfiguration.class,
+							HttpMessageConvertersAutoConfiguration.class, JacksonAutoConfiguration.class,
+							GraphQlAutoConfiguration.class, GraphQlWebMvcAutoConfiguration.class,
+							GraphQlWebMvcSecurityAutoConfiguration.class, SecurityAutoConfiguration.class))
+			.withUserConfiguration(DataFetchersConfiguration.class, SecurityConfig.class)
+			.withPropertyValues("spring.main.web-application-type=servlet");
+
+	@Test
+	void contributesSecurityComponents() {
+		this.contextRunner.run((context) -> {
+			assertThat(context).hasSingleBean(SecurityDataFetcherExceptionResolver.class);
+			assertThat(context).hasSingleBean(SecurityContextThreadLocalAccessor.class);
+		});
+	}
+
+	@Test
+	void anonymousUserShouldBeUnauthorized() {
+		testWith((mockMvc) -> {
+			String query = "{ bookById(id: \\\"book-1\\\"){ id name pageCount author }}";
+			MvcResult result = mockMvc.perform(post("/graphql").content("{\"query\": \"" + query + "\"}")).andReturn();
+			mockMvc.perform(asyncDispatch(result)).andExpect(status().isOk())
+					.andExpect(content().contentTypeCompatibleWith(MediaType.APPLICATION_JSON))
+					.andExpect(jsonPath("data.bookById.name").doesNotExist()).andExpect(
+							jsonPath("errors[0].extensions.classification").value(ErrorType.UNAUTHORIZED.toString()));
+		});
+	}
+
+	@Test
+	void authenticatedUserShouldGetData() {
+		testWith((mockMvc) -> {
+			String query = "{  bookById(id: \\\"book-1\\\"){ id name pageCount author }}";
+			MvcResult result = mockMvc
+					.perform(post("/graphql").content("{\"query\": \"" + query + "\"}").with(user("rob"))).andReturn();
+			mockMvc.perform(asyncDispatch(result)).andExpect(status().isOk())
+					.andExpect(content().contentTypeCompatibleWith(MediaType.APPLICATION_JSON))
+					.andExpect(jsonPath("data.bookById.name").value("GraphQL for beginners"))
+					.andExpect(jsonPath("errors").doesNotExist());
+		});
+
+	}
+
+	private void testWith(MockMvcConsumer mockMvcConsumer) {
+		this.contextRunner.run((context) -> {
+			MediaType mediaType = MediaType.APPLICATION_JSON;
+			MockMvc mockMvc = MockMvcBuilders.webAppContextSetup(context)
+					.defaultRequest(post("/graphql").contentType(mediaType).accept(mediaType)).apply(springSecurity())
+					.build();
+			mockMvcConsumer.accept(mockMvc);
+		});
+	}
+
+	private interface MockMvcConsumer {
+
+		void accept(MockMvc mockMvc) throws Exception;
+
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	static class DataFetchersConfiguration {
+
+		@Bean
+		RuntimeWiringConfigurer bookDataFetcher(BookService bookService) {
+			return (builder) -> builder.type(TypeRuntimeWiring.newTypeWiring("Query").dataFetcher("bookById",
+					(env) -> bookService.getBookdById(env.getArgument("id"))));
+		}
+
+		@Bean
+		BookService bookService() {
+			return new BookService();
+		}
+
+	}
+
+	static class BookService {
+
+		@PreAuthorize("hasRole('USER')")
+		@Nullable
+		Book getBookdById(String id) {
+			return GraphQlTestDataFetchers.getBookById(id);
+		}
+
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	@EnableWebSecurity
+	@EnableGlobalMethodSecurity(prePostEnabled = true)
+	static class SecurityConfig {
+
+		@Bean
+		DefaultSecurityFilterChain springWebFilterChain(HttpSecurity http) throws Exception {
+			return http.csrf((c) -> c.disable())
+					// Demonstrate that method security works
+					// Best practice to use both for defense in depth
+					.authorizeRequests((requests) -> requests.anyRequest().permitAll()).httpBasic(withDefaults())
+					.build();
+		}
+
+		@Bean
+		static InMemoryUserDetailsManager userDetailsService() {
+			User.UserBuilder userBuilder = User.withDefaultPasswordEncoder();
+			UserDetails rob = userBuilder.username("rob").password("rob").roles("USER").build();
+			UserDetails admin = userBuilder.username("admin").password("admin").roles("USER", "ADMIN").build();
+			return new InMemoryUserDetailsManager(rob, admin);
+		}
+
+	}
+
+}

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/graphql/servlet/GraphQlWebMvcAutoConfigurationTests.java

@@ -0,0 +1,193 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.autoconfigure.graphql.servlet;
+
+import graphql.schema.idl.TypeRuntimeWiring;
+import org.hamcrest.Matchers;
+import org.junit.jupiter.api.Test;
+
+import org.springframework.boot.autoconfigure.AutoConfigurations;
+import org.springframework.boot.autoconfigure.graphql.GraphQlAutoConfiguration;
+import org.springframework.boot.autoconfigure.graphql.GraphQlTestDataFetchers;
+import org.springframework.boot.autoconfigure.http.HttpMessageConvertersAutoConfiguration;
+import org.springframework.boot.autoconfigure.jackson.JacksonAutoConfiguration;
+import org.springframework.boot.autoconfigure.web.servlet.DispatcherServletAutoConfiguration;
+import org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration;
+import org.springframework.boot.test.context.runner.WebApplicationContextRunner;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.graphql.execution.RuntimeWiringConfigurer;
+import org.springframework.graphql.web.WebGraphQlHandler;
+import org.springframework.graphql.web.WebInterceptor;
+import org.springframework.graphql.web.webmvc.GraphQlHttpHandler;
+import org.springframework.graphql.web.webmvc.GraphQlWebSocketHandler;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.MediaType;
+import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.test.web.servlet.MvcResult;
+import org.springframework.test.web.servlet.setup.MockMvcBuilders;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.asyncDispatch;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.content;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.header;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.jsonPath;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.redirectedUrl;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+/**
+ * Tests for {@link GraphQlWebMvcAutoConfiguration}.
+ *
+ * @author Brian Clozel
+ */
+class GraphQlWebMvcAutoConfigurationTests {
+
+	private final WebApplicationContextRunner contextRunner = new WebApplicationContextRunner()
+			.withConfiguration(
+					AutoConfigurations.of(DispatcherServletAutoConfiguration.class, WebMvcAutoConfiguration.class,
+							HttpMessageConvertersAutoConfiguration.class, JacksonAutoConfiguration.class,
+							GraphQlAutoConfiguration.class, GraphQlWebMvcAutoConfiguration.class))
+			.withUserConfiguration(DataFetchersConfiguration.class, CustomWebInterceptor.class)
+			.withPropertyValues("spring.main.web-application-type=servlet", "spring.graphql.graphiql.enabled=true",
+					"spring.graphql.schema.printer.enabled=true",
+					"spring.graphql.cors.allowed-origins=https://example.com",
+					"spring.graphql.cors.allowed-methods=POST", "spring.graphql.cors.allow-credentials=true");
+
+	@Test
+	void shouldContributeDefaultBeans() {
+		this.contextRunner.run((context) -> assertThat(context).hasSingleBean(GraphQlHttpHandler.class)
+				.hasSingleBean(WebGraphQlHandler.class).doesNotHaveBean(GraphQlWebSocketHandler.class));
+	}
+
+	@Test
+	void simpleQueryShouldWork() {
+		testWith((mockMvc) -> {
+			String query = "{ bookById(id: \\\"book-1\\\"){ id name pageCount author } }";
+			MvcResult result = mockMvc.perform(post("/graphql").content("{\"query\": \"" + query + "\"}")).andReturn();
+			mockMvc.perform(asyncDispatch(result)).andExpect(status().isOk())
+					.andExpect(content().contentTypeCompatibleWith(MediaType.APPLICATION_JSON))
+					.andExpect(jsonPath("data.bookById.name").value("GraphQL for beginners"));
+		});
+	}
+
+	@Test
+	void httpGetQueryShouldBeSupported() {
+		testWith((mockMvc) -> {
+			String query = "{ bookById(id: \\\"book-1\\\"){ id name pageCount author } }";
+			mockMvc.perform(get("/graphql?query={query}", "{\"query\": \"" + query + "\"}"))
+					.andExpect(status().isMethodNotAllowed()).andExpect(header().string("Allow", "POST"));
+		});
+	}
+
+	@Test
+	void shouldRejectMissingQuery() {
+		testWith((mockMvc) -> mockMvc.perform(post("/graphql").content("{}")).andExpect(status().isBadRequest()));
+	}
+
+	@Test
+	void shouldRejectQueryWithInvalidJson() {
+		testWith((mockMvc) -> mockMvc.perform(post("/graphql").content(":)")).andExpect(status().isBadRequest()));
+	}
+
+	@Test
+	void shouldConfigureWebInterceptors() {
+		testWith((mockMvc) -> {
+			String query = "{ bookById(id: \\\"book-1\\\"){ id name pageCount author } }";
+			MvcResult result = mockMvc.perform(post("/graphql").content("{\"query\": \"" + query + "\"}")).andReturn();
+			mockMvc.perform(asyncDispatch(result)).andExpect(status().isOk())
+					.andExpect(header().string("X-Custom-Header", "42"));
+		});
+	}
+
+	@Test
+	void shouldExposeSchemaEndpoint() {
+		testWith((mockMvc) -> mockMvc.perform(get("/graphql/schema")).andExpect(status().isOk())
+				.andExpect(content().contentType(MediaType.TEXT_PLAIN))
+				.andExpect(content().string(Matchers.containsString("type Book"))));
+	}
+
+	@Test
+	void shouldExposeGraphiqlEndpoint() {
+		testWith((mockMvc) -> {
+			mockMvc.perform(get("/graphiql")).andExpect(status().is3xxRedirection())
+					.andExpect(redirectedUrl("http://localhost/graphiql?path=/graphql"));
+			mockMvc.perform(get("/graphiql?path=/graphql")).andExpect(status().isOk())
+					.andExpect(content().contentType(MediaType.TEXT_HTML));
+		});
+	}
+
+	@Test
+	void shouldSupportCors() {
+		testWith((mockMvc) -> {
+			String query = "{" + "  bookById(id: \\\"book-1\\\"){ " + "    id" + "    name" + "    pageCount"
+					+ "    author" + "  }" + "}";
+			MvcResult result = mockMvc.perform(post("/graphql")
+					.header(HttpHeaders.ACCESS_CONTROL_REQUEST_METHOD, "POST")
+					.header(HttpHeaders.ORIGIN, "https://example.com").content("{\"query\": \"" + query + "\"}"))
+					.andReturn();
+			mockMvc.perform(asyncDispatch(result)).andExpect(status().isOk())
+					.andExpect(header().stringValues(HttpHeaders.ACCESS_CONTROL_ALLOW_ORIGIN, "https://example.com"))
+					.andExpect(header().stringValues(HttpHeaders.ACCESS_CONTROL_ALLOW_CREDENTIALS, "true"));
+		});
+	}
+
+	@Test
+	void shouldConfigureWebSocketBeans() {
+		this.contextRunner.withPropertyValues("spring.graphql.websocket.path=/ws")
+				.run((context) -> assertThat(context).hasSingleBean(GraphQlWebSocketHandler.class));
+	}
+
+	private void testWith(MockMvcConsumer mockMvcConsumer) {
+		this.contextRunner.run((context) -> {
+			MediaType mediaType = MediaType.APPLICATION_JSON;
+			MockMvc mockMvc = MockMvcBuilders.webAppContextSetup(context)
+					.defaultRequest(post("/graphql").contentType(mediaType).accept(mediaType)).build();
+			mockMvcConsumer.accept(mockMvc);
+		});
+	}
+
+	private interface MockMvcConsumer {
+
+		void accept(MockMvc mockMvc) throws Exception;
+
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	static class DataFetchersConfiguration {
+
+		@Bean
+		RuntimeWiringConfigurer bookDataFetcher() {
+			return (builder) -> builder.type(TypeRuntimeWiring.newTypeWiring("Query").dataFetcher("bookById",
+					GraphQlTestDataFetchers.getBookByIdDataFetcher()));
+		}
+
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	static class CustomWebInterceptor {
+
+		@Bean
+		WebInterceptor customWebInterceptor() {
+			return (webInput, interceptorChain) -> interceptorChain.next(webInput)
+					.map((output) -> output.transform((builder) -> builder.responseHeader("X-Custom-Header", "42")));
+		}
+
+	}
+
+}

spring-boot-project/spring-boot-autoconfigure/src/test/resources/graphql/schema.graphqls

@@ -0,0 +1,4 @@
+type Query {
+    greeting(name: String! = "Spring"): String!
+    bookById(id: ID): Book
+}

spring-boot-project/spring-boot-autoconfigure/src/test/resources/graphql/types/book.graphqls

@@ -0,0 +1,6 @@
+type Book {
+    id: ID
+    name: String
+    pageCount: Int
+    author: String
+}

spring-boot-project/spring-boot-autoconfigure/src/test/resources/graphql/types/person.custom

@@ -0,0 +1,4 @@
+type Person {
+    id: ID
+    name: String
+}

spring-boot-project/spring-boot-dependencies/build.gradle

@@ -273,6 +273,13 @@ bom {
 			]
 		}
 	}
+	library("GraphQL Java", "17.3") {
+		group("com.graphql-java") {
+			modules = [
+				"graphql-java"
+			]
+		}
+	}
 	library("Groovy", "3.0.9") {
 		group("org.codehaus.groovy") {
 			imports = [
@@ -1157,6 +1164,7 @@ bom {
 				"spring-boot-starter-data-neo4j",
 				"spring-boot-starter-data-rest",
 				"spring-boot-starter-freemarker",
+				"spring-boot-starter-graphql",
 				"spring-boot-starter-groovy-templates",
 				"spring-boot-starter-hateoas",
 				"spring-boot-starter-integration",
@@ -1313,6 +1321,14 @@ bom {
 			]
 		}
 	}
+	library("Spring GraphQL", "1.0.0-SNAPSHOT") {
+		group("org.springframework.graphql") {
+			modules = [
+					"spring-graphql",
+					"spring-graphql-test"
+			]
+		}
+	}
 	library("Spring HATEOAS", "2.0.0-SNAPSHOT") {
 		group("org.springframework.hateoas") {
 			modules = [

spring-boot-project/spring-boot-devtools/src/main/java/org/springframework/boot/devtools/env/DevToolsPropertyDefaultsPostProcessor.java

@@ -62,6 +62,7 @@ public class DevToolsPropertyDefaultsPostProcessor implements EnvironmentPostPro
 	static {
 		Map<String, Object> properties = new HashMap<>();
 		properties.put("spring.freemarker.cache", "false");
+		properties.put("spring.graphql.graphiql.enabled", "true");
 		properties.put("spring.groovy.template.cache", "false");
 		properties.put("spring.mustache.cache", "false");
 		properties.put("server.servlet.session.persistent", "true");

spring-boot-project/spring-boot-docs/build.gradle

@@ -133,6 +133,8 @@ dependencies {
 	implementation("org.springframework.data:spring-data-neo4j")
 	implementation("org.springframework.data:spring-data-redis")
 	implementation("org.springframework.data:spring-data-r2dbc")
+	implementation("org.springframework.graphql:spring-graphql")
+	implementation("org.springframework.graphql:spring-graphql-test")
 	implementation("org.springframework.kafka:spring-kafka")
 	implementation("org.springframework.kafka:spring-kafka-test")
 	implementation("org.springframework.restdocs:spring-restdocs-mockmvc") {
@@ -266,8 +268,9 @@ tasks.withType(org.asciidoctor.gradle.jvm.AbstractAsciidoctorTask) {
 					"spring-data-r2dbc-version": versionConstraints["org.springframework.data:spring-data-r2dbc"],
 					"spring-data-rest-version": versionConstraints["org.springframework.data:spring-data-rest-core"],
 					"spring-framework-version": versionConstraints["org.springframework:spring-core"],
-					"spring-kafka-version": versionConstraints["org.springframework.kafka:spring-kafka"],
+					"spring-graphql-version": versionConstraints["org.springframework.graphql:spring-graphql"],
 					"spring-integration-version": versionConstraints["org.springframework.integration:spring-integration-core"],
+					"spring-kafka-version": versionConstraints["org.springframework.kafka:spring-kafka"],
 					"spring-security-version": securityVersion,
 					"spring-webservices-version": versionConstraints["org.springframework.ws:spring-ws-core"]
 	}
@@ -310,6 +313,9 @@ syncDocumentationSourceForAsciidoctor {
 	from("src/main/groovy") {
 		into "main/groovy"
 	}
+	from("src/main/resources") {
+		into "main/resources"
+	}
 }
 
 syncDocumentationSourceForAsciidoctorMultipage {
@@ -331,6 +337,9 @@ syncDocumentationSourceForAsciidoctorMultipage {
 	from("src/main/groovy") {
 		into "main/groovy"
 	}
+	from("src/main/resources") {
+		into "main/resources"
+	}
 }
 
 syncDocumentationSourceForAsciidoctorPdf {
@@ -352,6 +361,9 @@ syncDocumentationSourceForAsciidoctorPdf {
 	from("src/main/groovy") {
 		into "main/groovy"
 	}
+	from("src/main/resources") {
+		into "main/resources"
+	}
 }
 
 task zip(type: Zip) {

spring-boot-project/spring-boot-docs/src/docs/asciidoc/actuator/metrics.adoc

@@ -837,6 +837,58 @@ A `CacheMetricsRegistrar` bean is made available to make that process easier.
 
 
 
+[[actuator.metrics.supported.spring-graphql]]
+==== Spring GraphQL Metrics
+Auto-configuration enables the instrumentation of GraphQL queries, for any supported transport.
+
+Spring Boot records a `graphql.request` timer with:
+
+[cols="1,2,2"]
+|===
+|Tag | Description| Sample values
+
+|outcome
+|Request outcome
+|"SUCCESS", "ERROR"
+|===
+
+A single GraphQL query can involve many `DataFetcher` calls, so there is a dedicated `graphql.datafetcher` timer:
+
+[cols="1,2,2"]
+|===
+|Tag | Description| Sample values
+
+|path
+|data fetcher path
+|"Query.project"
+
+|outcome
+|data fetching outcome
+|"SUCCESS", "ERROR"
+|===
+
+
+The `graphql.request.datafetch.count` https://micrometer.io/docs/concepts#_distribution_summaries[distribution summary] counts the number of non-trivial `DataFetcher` calls made per request.
+This metric is useful for detecting "N+1" data fetching issues and consider batch loading; it provides the `"TOTAL"` number of data fetcher calls made over the `"COUNT"` of recorded requests, as well as the `"MAX"` calls made for a single request over the considered period.
+More options are available for <<application-properties#application-properties.actuator.management.metrics.distribution.maximum-expected-value, configuring distributions with application properties>>.
+
+A single response can contain many GraphQL errors, counted by the `graphql.error` counter:
+
+[cols="1,2,2"]
+|===
+|Tag | Description| Sample values
+
+|errorType
+|error type
+|"DataFetchingException"
+
+|errorPath
+|error JSON Path
+|"$.project"
+|===
+
+
+
 [[actuator.metrics.supported.jdbc]]
 ==== DataSource Metrics
 Auto-configuration enables the instrumentation of all available `DataSource` objects with metrics prefixed with `jdbc.connections`.

spring-boot-project/spring-boot-docs/src/docs/asciidoc/attributes.adoc

@@ -21,6 +21,7 @@
 :github-wiki: https://github.com/{github-repo}/wiki
 :docs-java: ../../main/java/org/springframework/boot/docs
 :docs-groovy: ../../main/groovy/org/springframework/boot/docs
+:docs-resources: ../../main/resources
 :spring-boot-code: https://github.com/{github-repo}/tree/{github-tag}
 :spring-boot-api: https://docs.spring.io/spring-boot/docs/{spring-boot-version}/api
 :spring-boot-docs: https://docs.spring.io/spring-boot/docs/{spring-boot-version}/reference
@@ -79,6 +80,9 @@
 :spring-framework: https://spring.io/projects/spring-framework
 :spring-framework-api: https://docs.spring.io/spring-framework/docs/{spring-framework-version}/javadoc-api/org/springframework
 :spring-framework-docs: https://docs.spring.io/spring-framework/docs/{spring-framework-version}/reference/html
+:spring-graphql: https://spring.io/projects/spring-graphql
+:spring-graphql-api: https://docs.spring.io/spring-graphql/docs/{spring-graphql-version}/api/
+:spring-graphql-docs: https://docs.spring.io/spring-graphql/docs/{spring-graphql-version}/reference/html/
 :spring-integration: https://spring.io/projects/spring-integration
 :spring-integration-docs: https://docs.spring.io/spring-integration/docs/{spring-integration-version}/reference/html/
 :spring-kafka-docs: https://docs.spring.io/spring-kafka/docs/{spring-kafka-version}/reference/html/

spring-boot-project/spring-boot-docs/src/docs/asciidoc/features/testing.adoc

@@ -448,6 +448,62 @@ TIP: Sometimes writing Spring WebFlux tests is not enough; Spring Boot can help
 
 
 
+[[features.testing.spring-boot-applications.spring-graphql-tests]]
+==== Auto-configured Spring GraphQL Tests
+Spring GraphQL offers a dedicated testing support module; you'll need to add it to your project:
+
+.Maven
+[source,xml,indent=0,subs="verbatim"]
+----
+	<dependencies>
+		<dependency>
+			<groupId>org.springframework.graphql</groupId>
+			<artifactId>spring-graphql-test</artifactId>
+			<scope>test</scope>
+		</dependency>
+		<!-- Unless already present in the compile scope -->
+		<dependency>
+			<groupId>org.springframework</groupId>
+			<artifactId>spring-webflux</artifactId>
+			<scope>test</scope>
+		</dependency>
+	</dependencies>
+----
+
+.Gradle
+[source,gradle,indent=0,subs="verbatim"]
+----
+	dependencies {
+		testImplementation("org.springframework.graphql:spring-graphql-test")
+		// Unless already present in the implementation configuration
+		testImplementation("org.springframework:spring-webflux")
+	}
+----
+
+This testing module ships the {spring-graphql-docs}/testing.html#testing-webgraphqltester[WebGraphQlTester].
+The tester is heavily used in test, so be sure to become familiar with using it.
+
+Spring Boot helps you to test your {spring-graphql-docs}#controllers[Spring GraphQL Controllers] with the `@GraphQlTest` annotation.
+`@GraphQlTest` auto-configures the Spring GraphQL infrastructure, without any transport nor server being involved.
+This limits scanned beans to `@Controller`, `RuntimeWiringConfigurer`, `JsonComponent`, `Converter` and `GenericConverter`.
+Regular `@Component` and `@ConfigurationProperties` beans are not scanned when the `@GraphQlTest` annotation is used.
+`@EnableConfigurationProperties` can be used to include `@ConfigurationProperties` beans.
+
+TIP: A list of the auto-configurations that are enabled by `@GraphQlTest` can be <<test-auto-configuration#test-auto-configuration,found in the appendix>>.
+
+TIP: If you need to register extra components, such as Jackson `Module`, you can import additional configuration classes using `@Import` on your test.
+
+Often, `@GraphQlTest` is limited to a set of controllers and used in combination with the `@MockBean` annotation to provide mock implementations for required collaborators.
+
+[source,java,indent=0,subs="verbatim"]
+----
+include::{docs-java}/features/testing/springbootapplications/springgraphqltests/GreetingControllerTests.java[]
+----
+
+TIP: You can also auto-configure `WebGraphQlTester` in a non-`@GraphQlTest` (such as `@SpringBootTest`) by annotating it with `@AutoConfigureWebGraphQlTester`.
+
+
+
 [[features.testing.spring-boot-applications.autoconfigured-spring-data-cassandra]]
 ==== Auto-configured Data Cassandra Tests
 You can use `@DataCassandraTest` to test Cassandra applications.

spring-boot-project/spring-boot-docs/src/docs/asciidoc/index.adoc

@@ -16,7 +16,7 @@ The reference documentation consists of the following sections:
 <<upgrading#upgrading,Upgrading Spring Boot Applications>> :: Upgrading from 1.x, Upgrading to a new feature release, and Upgrading the Spring Boot CLI.
 <<using#using,Using Spring Boot>> :: Build Systems, Structuring Your Code, Configuration, Spring Beans and Dependency Injection, DevTools, and more.
 <<features#features,Core Features>> :: Profiles, Logging, Security, Caching, Spring Integration, Testing, and more.
-<<web#web,Web>> :: Servlet Web, Reactive Web, Embedded Container Support, Graceful Shutdown, and more.
+<<web#web,Web>> :: Servlet Web, Reactive Web, GraphQL, Embedded Container Support, Graceful Shutdown, and more.
 <<data#data,Data>> :: SQL and NOSQL data access.
 <<io#io,IO>> :: Caching, Quartz Scheduler, REST clients, Sending email, Spring Web Services, and more.
 <<messaging#messaging,Messaging>> :: JMS, AMQP, RSocket, WebSocket, and Spring Integration.

spring-boot-project/spring-boot-docs/src/docs/asciidoc/web.adoc

@@ -19,6 +19,8 @@ include::web/spring-security.adoc[]
 
 include::web/spring-session.adoc[]
 
+include::web/spring-graphql.adoc[]
+
 include::web/spring-hateoas.adoc[]
 
 include::web/whats-next.adoc[]

spring-boot-project/spring-boot-docs/src/docs/asciidoc/web/spring-graphql.adoc

@@ -0,0 +1,135 @@
+[[web.graphql]]
+== Spring GraphQL
+If you want to build GraphQL applications, you can take advantage of Spring Boot's auto-configuration for {spring-graphql}[Spring GraphQL].
+The Spring GraphQL project is based on https://github.com/graphql-java/graphql-java[GraphQL Java].
+You'll need the `spring-boot-starter-graphql` starter at a minimum.
+Because GraphQL is transport-agnostic, you'll also need to have one or more additional starters in your application to expose your GraphQL API over the web:
+
+
+[cols="1,1,1"]
+|===
+| Starter | Transport | Implementation
+
+| `spring-boot-starter-web`
+| HTTP
+| Spring MVC
+
+| `spring-boot-starter-websocket`
+| WebSocket
+| WebSocket for Servlet apps
+
+| `spring-boot-starter-webflux`
+| HTTP, WebSocket
+| Spring WebFlux
+
+|===
+
+
+
+[[web.graphql.schema]]
+=== GraphQL Schema
+
+A Spring GraphQL application requires a defined schema at startup.
+By default, you can write ".graphqls" or ".gqls" schema files under `src/main/resources/graphql/**` and Spring Boot will pick them up automatically.
+You can customize the locations with configprop:spring.graphql.schema.locations[] and the file extensions with configprop:spring.graphql.schema.file-extensions[].
+
+In the following sections, we'll consider this sample GraphQL schema, defining two types and two queries:
+
+[source,json,indent=0,subs="verbatim,quotes"]
+----
+include::{docs-resources}/graphql/schema.graphqls[]
+----
+
+
+[[web.graphql.runtimewiring]]
+=== GraphQL RuntimeWiring
+
+The GraphQL Java `RuntimeWiring.Builder` can be used to register custom scalar types, directives, type resolvers, `DataFetcher`s, and more.
+You can declare `RuntimeWiringConfigurer` beans in your Spring config to get access to the `RuntimeWiring.Builder`.
+Spring Boot detects such beans and adds them to the {spring-graphql-docs}#execution-graphqlsource[GraphQlSource builder].
+
+Typically, however, applications will not implement `DataFetcher` directly and will instead create {spring-graphql-docs}#controllers[annotated controllers].
+Spring Boot will automatically register `@Controller` classes with annotated handler methods and registers those as `DataFetcher`s.
+Here's a sample implementation for our greeting query with a `@Controller` class:
+
+[source,java,indent=0,subs="verbatim"]
+----
+include::{docs-java}/web/graphql/GreetingController.java[]
+----
+
+
+
+[[web.graphql.data-query]]
+=== Querydsl and QueryByExample Repositories support
+
+Spring Data offers support for both Querydsl and QueryByExample repositories.
+Spring GraphQL can {spring-graphql-docs}#data[configure Querydsl and QueryByExample repositories as `DataFetcher`].
+
+Spring Data repositories annotated with `@GraphQlRepository` and extending one of:
+
+* `QuerydslPredicateExecutor`
+* `ReactiveQuerydslPredicateExecutor`
+* `QueryByExampleExecutor`
+* `ReactiveQueryByExampleExecutor`
+
+are detected by Spring Boot and considered as candidates for `DataFetcher` for matching top-level queries.
+
+
+
+[[web.graphql.web-endpoints]]
+=== Web Endpoints
+
+The GraphQL HTTP endpoint is at HTTP POST "/graphql" by default. The path can be customized with configprop:spring.graphql.path[].
+
+The GraphQL WebSocket endpoint is off by default. To enable it:
+
+* For a Servlet application, add the WebSocket starter `spring-boot-starter-websocket`
+* For a WebFlux application, no additional dependency is required
+* For both, the configprop:spring.graphql.websocket.path[] application property must be set
+
+Spring GraphQL provides a {spring-graphql-docs}#web-interception[Web Interception] model.
+This is quite useful for retrieving information from an HTTP request header and set it in the GraphQL context or fetching information from the same context and writing it to a response header.
+With Spring Boot, you can declare a `WebInterceptor` bean to have it registered with the web transport.
+
+
+
+[[web.graphql.cors]]
+=== CORS
+
+{spring-framework-docs}/web.html#mvc-cors[Spring MVC] and {spring-framework-docs}/web-reactive.html#webflux-cors[Spring WebFlux] support CORS (Cross-Origin Resource Sharing) requests.
+CORS is a critical part of the web config for GraphQL applications that are accessed from browsers using different domains.
+
+Spring Boot supports many configuration properties under the `spring.graphql.cors.*` namespace; here's a short configuration sample:
+
+[source,yaml,indent=0,subs="verbatim",configblocks]
+----
+	spring:
+	  graphql:
+	    cors:
+	      allowed-origins: "https://example.org"
+	      allowed-methods: GET,POST
+	      max-age: 1800s
+----
+
+
+
+[[web.graphql.exception-handling]]
+=== Exceptions Handling
+
+Spring GraphQL enables applications to register one or more Spring `DataFetcherExceptionResolver` components that are invoked sequentially.
+The Exception must be resolved to a list of `graphql.GraphQLError` objects, see {spring-graphql-docs}#execution-exceptions[Spring GraphQL exception handling documentation].
+Spring Boot will automatically detect `DataFetcherExceptionResolver` beans and register them with the `GraphQlSource.Builder`.
+
+
+
+[[web.graphql.graphiql]]
+=== GraphiQL and Schema printer
+
+Spring GraphQL offers infrastructure for helping developers when consuming or developing a GraphQL API.
+
+Spring GraphQL ships with a default https://github.com/graphql/graphiql[GraphiQL] page that is exposed at "/graphiql" by default.
+This page is disabled by default and can be turned on with the configprop:spring.graphql.graphiql.enabled[] property.
+Many applications exposing such a page will prefer a custom build.
+A default implementation is very useful during development, this is why it is exposed automatically with <<using#using.devtools,`spring-boot-devtools`>> during development.
+
+You can also choose to expose the GraphQL schema in text format at `/graphql/schema` when the configprop:spring.graphql.schema.printer.enabled[] property is enabled.

spring-boot-project/spring-boot-docs/src/main/java/org/springframework/boot/docs/features/testing/springbootapplications/springgraphqltests/GreetingControllerTests.java

@@ -0,0 +1,44 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.features.testing.springbootapplications.springgraphqltests;
+
+import org.junit.jupiter.api.Test;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.docs.web.graphql.GreetingController;
+import org.springframework.boot.test.autoconfigure.graphql.GraphQlTest;
+import org.springframework.graphql.test.tester.GraphQlTester;
+
+@GraphQlTest(GreetingController.class)
+class GreetingControllerTests {
+
+	@Autowired
+	private GraphQlTester graphQlTester;
+
+	@Test
+	void shouldGreetWithSpecificName() {
+		this.graphQlTester.query("{ greeting(name: \"Alice\") } ").execute().path("greeting").entity(String.class)
+				.isEqualTo("Hello, Alice!");
+	}
+
+	@Test
+	void shouldGreetWithDefaultName() {
+		this.graphQlTester.query("{ greeting } ").execute().path("greeting").entity(String.class)
+				.isEqualTo("Hello, Spring!");
+	}
+
+}

spring-boot-project/spring-boot-docs/src/main/java/org/springframework/boot/docs/web/graphql/GreetingController.java

@@ -0,0 +1,31 @@
+/*
+ * Copyright 2002-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.docs.web.graphql;
+
+import org.springframework.graphql.data.method.annotation.Argument;
+import org.springframework.graphql.data.method.annotation.QueryMapping;
+import org.springframework.stereotype.Controller;
+
+@Controller
+public class GreetingController {
+
+	@QueryMapping
+	public String greeting(@Argument String name) {
+		return "Hello, " + name + "!";
+	}
+
+}

spring-boot-project/spring-boot-docs/src/main/resources/graphql/schema.graphqls

@@ -0,0 +1,29 @@
+type Query {
+    greeting(name: String! = "Spring"): String!
+    project(slug: ID!): Project
+}
+
+""" A Project in the Spring portfolio """
+type Project {
+    """ Unique string id used in URLs """
+    slug: ID!
+    """ Project name """
+    name: String!
+    """ URL of the git repository """
+    repositoryUrl: String!
+    """ Current support status """
+    status: ProjectStatus!
+}
+
+enum ProjectStatus {
+    """ Actively supported by the Spring team """
+    ACTIVE
+    """ Supported by the community """
+    COMMUNITY
+    """ Prototype, not officially supported yet  """
+    INCUBATING
+    """ Project being retired, in maintenance mode """
+    ATTIC
+    """ End-Of-Lifed """
+    EOL
+}

spring-boot-project/spring-boot-starters/spring-boot-starter-graphql/build.gradle

@@ -0,0 +1,11 @@
+plugins {
+	id "org.springframework.boot.starter"
+}
+
+description = "Starter for building GraphQL applications with Spring GraphQL"
+
+dependencies {
+	api(project(":spring-boot-project:spring-boot-starters:spring-boot-starter"))
+	api(project(":spring-boot-project:spring-boot-starters:spring-boot-starter-json"))
+	api("org.springframework.graphql:spring-graphql")
+}

spring-boot-project/spring-boot-test-autoconfigure/build.gradle

@@ -44,6 +44,7 @@ dependencies {
 	optional("org.springframework.data:spring-data-neo4j")
 	optional("org.springframework.data:spring-data-r2dbc")
 	optional("org.springframework.data:spring-data-redis")
+	optional("org.springframework.graphql:spring-graphql-test")
 	optional("org.springframework.restdocs:spring-restdocs-mockmvc") {
 		exclude group: "javax.servlet", module: "javax.servlet-api"
 	}

spring-boot-project/spring-boot-test-autoconfigure/src/main/java/org/springframework/boot/test/autoconfigure/graphql/AutoConfigureGraphQl.java

@@ -0,0 +1,47 @@
+/*
+ * Copyright 2020-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.test.autoconfigure.graphql;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Inherited;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+import org.springframework.boot.autoconfigure.ImportAutoConfiguration;
+
+/**
+ * {@link ImportAutoConfiguration Auto-configuration imports} for typical Spring GraphQL
+ * tests. Most tests should consider using {@link GraphQlTest @GraphQlTest} rather than
+ * using this annotation directly.
+ *
+ * @author Brian Clozel
+ * @since 2.7.0
+ * @see GraphQlTest
+ * @see org.springframework.boot.autoconfigure.http.codec.CodecsAutoConfiguration
+ * @see org.springframework.boot.autoconfigure.validation.ValidationAutoConfiguration
+ * @see org.springframework.boot.autoconfigure.graphql.GraphQlAutoConfiguration
+ */
+@Target(ElementType.TYPE)
+@Retention(RetentionPolicy.RUNTIME)
+@Documented
+@Inherited
+@ImportAutoConfiguration
+public @interface AutoConfigureGraphQl {
+
+}

spring-boot-project/spring-boot-test-autoconfigure/src/main/java/org/springframework/boot/test/autoconfigure/graphql/GraphQlTest.java

@@ -0,0 +1,152 @@
+/*
+ * Copyright 2020-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.test.autoconfigure.graphql;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Inherited;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+import org.junit.jupiter.api.extension.ExtendWith;
+
+import org.springframework.boot.autoconfigure.ImportAutoConfiguration;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.boot.test.autoconfigure.OverrideAutoConfiguration;
+import org.springframework.boot.test.autoconfigure.core.AutoConfigureCache;
+import org.springframework.boot.test.autoconfigure.filter.TypeExcludeFilters;
+import org.springframework.boot.test.autoconfigure.graphql.tester.AutoConfigureGraphQlTester;
+import org.springframework.boot.test.autoconfigure.graphql.tester.AutoConfigureWebGraphQlTester;
+import org.springframework.boot.test.autoconfigure.json.AutoConfigureJson;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.core.annotation.AliasFor;
+import org.springframework.core.env.Environment;
+import org.springframework.test.context.BootstrapWith;
+import org.springframework.test.context.junit.jupiter.SpringExtension;
+
+/**
+ * Annotation to perform GraphQL tests focusing on GraphQL request execution without a Web
+ * layer, and loading only a subset of the application configuration.
+ * <p>
+ * The annotation disables full auto-configuration and instead loads only components
+ * relevant to GraphQL tests, including the following:
+ * <ul>
+ * <li>{@code @Controller}
+ * <li>{@code RuntimeWiringConfigurer}
+ * <li>{@code @JsonComponent}
+ * <li>{@code Converter}
+ * <li>{@code GenericConverter}
+ * </ul>
+ * <p>
+ * The annotation does not automatically load {@code @Component}, {@code @Service},
+ * {@code @Repository}, and other beans.
+ * <p>
+ * By default, tests annotated with {@code @GraphQlTest} have a
+ * {@link org.springframework.graphql.test.tester.GraphQlTester} configured. For more
+ * fine-grained control of the GraphQlTester, use
+ * {@link AutoConfigureGraphQlTester @AutoConfigureGraphQlTester}.
+ * <p>
+ * Typically {@code @GraphQlTest} is used in combination with
+ * {@link org.springframework.boot.test.mock.mockito.MockBean @MockBean} or
+ * {@link org.springframework.context.annotation.Import @Import} to load any collaborators
+ * and other components required for the tests.
+ * <p>
+ * To load your full application configuration instead and test via
+ * {@code WebGraphQlTester}, consider using
+ * {@link org.springframework.boot.test.context.SpringBootTest @SpringBootTest} combined
+ * with {@link AutoConfigureWebGraphQlTester @AutoConfigureWebGraphQlTester}.
+ *
+ * @author Brian Clozel
+ * @since 2.7.0
+ * @see AutoConfigureGraphQlTester
+ */
+@Target(ElementType.TYPE)
+@Retention(RetentionPolicy.RUNTIME)
+@Documented
+@Inherited
+@BootstrapWith(GraphQlTestContextBootstrapper.class)
+@ExtendWith(SpringExtension.class)
+@OverrideAutoConfiguration(enabled = false)
+@TypeExcludeFilters(GraphQlTypeExcludeFilter.class)
+@AutoConfigureCache
+@AutoConfigureJson
+@AutoConfigureGraphQl
+@AutoConfigureGraphQlTester
+@ImportAutoConfiguration
+public @interface GraphQlTest {
+
+	/**
+	 * Properties in form {@literal key=value} that should be added to the Spring
+	 * {@link Environment} before the test runs.
+	 * @return the properties to add
+	 */
+	String[] properties() default {};
+
+	/**
+	 * Specifies the controllers to test. This is an alias of {@link #controllers()} which
+	 * can be used for brevity if no other attributes are defined. See
+	 * {@link #controllers()} for details.
+	 * @see #controllers()
+	 * @return the controllers to test
+	 */
+	@AliasFor("controllers")
+	Class<?>[] value() default {};
+
+	/**
+	 * Specifies the controllers to test. May be left blank if all {@code @Controller}
+	 * beans should be added to the application context.
+	 * @see #value()
+	 * @return the controllers to test
+	 */
+	@AliasFor("value")
+	Class<?>[] controllers() default {};
+
+	/**
+	 * Determines if default filtering should be used with
+	 * {@link SpringBootApplication @SpringBootApplication}. By default, only
+	 * {@code @Controller} (when no explicit {@link #controllers() controllers} are
+	 * defined), {@code RuntimeWiringConfigurer}, {@code @JsonComponent},
+	 * {@code Converter}, and {@code GenericConverter} beans are included.
+	 * @see #includeFilters()
+	 * @see #excludeFilters()
+	 * @return if default filters should be used
+	 */
+	boolean useDefaultFilters() default true;
+
+	/**
+	 * A set of include filters which can be used to add otherwise filtered beans to the
+	 * application context.
+	 * @return include filters to apply
+	 */
+	ComponentScan.Filter[] includeFilters() default {};
+
+	/**
+	 * A set of exclude filters which can be used to filter beans that would otherwise be
+	 * added to the application context.
+	 * @return exclude filters to apply
+	 */
+	ComponentScan.Filter[] excludeFilters() default {};
+
+	/**
+	 * Auto-configuration exclusions that should be applied for this test.
+	 * @return auto-configuration exclusions to apply
+	 */
+	@AliasFor(annotation = ImportAutoConfiguration.class, attribute = "exclude")
+	Class<?>[] excludeAutoConfiguration() default {};
+
+}

spring-boot-project/spring-boot-test-autoconfigure/src/main/java/org/springframework/boot/test/autoconfigure/graphql/GraphQlTestContextBootstrapper.java

@@ -0,0 +1,36 @@
+/*
+ * Copyright 2020-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.test.autoconfigure.graphql;
+
+import org.springframework.boot.test.context.SpringBootTestContextBootstrapper;
+import org.springframework.core.annotation.MergedAnnotations;
+import org.springframework.test.context.TestContextBootstrapper;
+
+/**
+ * {@link TestContextBootstrapper} for {@link GraphQlTest @GraphQlTest}.
+ *
+ * @author Brian Clozel
+ */
+class GraphQlTestContextBootstrapper extends SpringBootTestContextBootstrapper {
+
+	@Override
+	protected String[] getProperties(Class<?> testClass) {
+		return MergedAnnotations.from(testClass, MergedAnnotations.SearchStrategy.INHERITED_ANNOTATIONS)
+				.get(GraphQlTest.class).getValue("properties", String[].class).orElse(null);
+	}
+
+}

spring-boot-project/spring-boot-test-autoconfigure/src/main/java/org/springframework/boot/test/autoconfigure/graphql/GraphQlTypeExcludeFilter.java

@@ -0,0 +1,93 @@
+/*
+ * Copyright 2020-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.test.autoconfigure.graphql;
+
+import java.util.Arrays;
+import java.util.Collections;
+import java.util.LinkedHashSet;
+import java.util.Set;
+
+import org.springframework.boot.context.TypeExcludeFilter;
+import org.springframework.boot.jackson.JsonComponent;
+import org.springframework.boot.test.autoconfigure.filter.StandardAnnotationCustomizableTypeExcludeFilter;
+import org.springframework.core.convert.converter.Converter;
+import org.springframework.core.convert.converter.GenericConverter;
+import org.springframework.graphql.execution.RuntimeWiringConfigurer;
+import org.springframework.stereotype.Controller;
+import org.springframework.util.ClassUtils;
+import org.springframework.util.ObjectUtils;
+
+/**
+ * {@link TypeExcludeFilter} for {@link GraphQlTest @GraphQlTest}.
+ *
+ * @author Brian Clozel
+ * @since 2.7.0
+ */
+public class GraphQlTypeExcludeFilter extends StandardAnnotationCustomizableTypeExcludeFilter<GraphQlTest> {
+
+	private static final Class<?>[] NO_CONTROLLERS = {};
+
+	private static final String[] OPTIONAL_INCLUDES = { "com.fasterxml.jackson.databind.Module" };
+
+	private static final Set<Class<?>> DEFAULT_INCLUDES;
+
+	static {
+		Set<Class<?>> includes = new LinkedHashSet<>();
+		includes.add(JsonComponent.class);
+		includes.add(RuntimeWiringConfigurer.class);
+		includes.add(Converter.class);
+		includes.add(GenericConverter.class);
+		for (String optionalInclude : OPTIONAL_INCLUDES) {
+			try {
+				includes.add(ClassUtils.forName(optionalInclude, null));
+			}
+			catch (Exception ex) {
+				// Ignore
+			}
+		}
+		DEFAULT_INCLUDES = Collections.unmodifiableSet(includes);
+	}
+
+	private static final Set<Class<?>> DEFAULT_INCLUDES_AND_CONTROLLER;
+
+	static {
+		Set<Class<?>> includes = new LinkedHashSet<>(DEFAULT_INCLUDES);
+		includes.add(Controller.class);
+		DEFAULT_INCLUDES_AND_CONTROLLER = Collections.unmodifiableSet(includes);
+	}
+
+	private final Class<?>[] controllers;
+
+	GraphQlTypeExcludeFilter(Class<?> testClass) {
+		super(testClass);
+		this.controllers = getAnnotation().getValue("controllers", Class[].class).orElse(NO_CONTROLLERS);
+	}
+
+	@Override
+	protected Set<Class<?>> getDefaultIncludes() {
+		if (ObjectUtils.isEmpty(this.controllers)) {
+			return DEFAULT_INCLUDES_AND_CONTROLLER;
+		}
+		return DEFAULT_INCLUDES;
+	}
+
+	@Override
+	protected Set<Class<?>> getComponentIncludes() {
+		return new LinkedHashSet<>(Arrays.asList(this.controllers));
+	}
+
+}

spring-boot-project/spring-boot-test-autoconfigure/src/main/java/org/springframework/boot/test/autoconfigure/graphql/package-info.java

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2020-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Auto-configuration for GraphQL testing.
+ */
+package org.springframework.boot.test.autoconfigure.graphql;

spring-boot-project/spring-boot-test-autoconfigure/src/main/java/org/springframework/boot/test/autoconfigure/graphql/tester/AutoConfigureGraphQlTester.java

@@ -0,0 +1,43 @@
+/*
+ * Copyright 2020-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.test.autoconfigure.graphql.tester;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Inherited;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+import org.springframework.boot.autoconfigure.ImportAutoConfiguration;
+import org.springframework.graphql.test.tester.GraphQlTester;
+
+/**
+ * Annotation that can be applied to a test class to enable a {@link GraphQlTester}.
+ *
+ * @author Brian Clozel
+ * @since 2.7.0
+ * @see GraphQlTesterAutoConfiguration
+ */
+@Target({ ElementType.TYPE, ElementType.METHOD })
+@Retention(RetentionPolicy.RUNTIME)
+@Documented
+@Inherited
+@ImportAutoConfiguration
+public @interface AutoConfigureGraphQlTester {
+
+}

spring-boot-project/spring-boot-test-autoconfigure/src/main/java/org/springframework/boot/test/autoconfigure/graphql/tester/AutoConfigureWebGraphQlTester.java

@@ -0,0 +1,52 @@
+/*
+ * Copyright 2020-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.test.autoconfigure.graphql.tester;
+
+import java.lang.annotation.Documented;
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Inherited;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+import org.springframework.boot.autoconfigure.ImportAutoConfiguration;
+import org.springframework.boot.test.autoconfigure.web.reactive.AutoConfigureWebTestClient;
+import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
+import org.springframework.graphql.test.tester.WebGraphQlTester;
+
+/**
+ * Annotation that can be applied to a test class to enable a {@link WebGraphQlTester}.
+ *
+ * <p>
+ * This annotation should be used with
+ * {@link org.springframework.boot.test.context.SpringBootTest @SpringBootTest} tests with
+ * Spring MVC or Spring WebFlux mock infrastructures.
+ *
+ * @author Brian Clozel
+ * @since 2.7.0
+ * @see WebGraphQlTesterAutoConfiguration
+ */
+@Target({ ElementType.TYPE, ElementType.METHOD })
+@Retention(RetentionPolicy.RUNTIME)
+@Documented
+@Inherited
+@AutoConfigureMockMvc
+@AutoConfigureWebTestClient
+@ImportAutoConfiguration
+public @interface AutoConfigureWebGraphQlTester {
+
+}

spring-boot-project/spring-boot-test-autoconfigure/src/main/java/org/springframework/boot/test/autoconfigure/graphql/tester/GraphQlTesterAutoConfiguration.java

@@ -0,0 +1,49 @@
+/*
+ * Copyright 2020-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.test.autoconfigure.graphql.tester;
+
+import graphql.GraphQL;
+
+import org.springframework.boot.autoconfigure.AutoConfigureAfter;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
+import org.springframework.boot.autoconfigure.graphql.GraphQlAutoConfiguration;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.graphql.GraphQlService;
+import org.springframework.graphql.test.tester.GraphQlTester;
+
+/**
+ * Auto-configuration for {@link GraphQlTester}.
+ *
+ * @author Brian Clozel
+ * @since 2.7.0
+ */
+@Configuration(proxyBeanMethods = false)
+@ConditionalOnClass({ GraphQL.class, GraphQlTester.class })
+@AutoConfigureAfter(GraphQlAutoConfiguration.class)
+public class GraphQlTesterAutoConfiguration {
+
+	@Bean
+	@ConditionalOnBean(GraphQlService.class)
+	@ConditionalOnMissingBean
+	public GraphQlTester graphQlTester(GraphQlService graphQlService) {
+		return GraphQlTester.create(graphQlService);
+	}
+
+}

spring-boot-project/spring-boot-test-autoconfigure/src/main/java/org/springframework/boot/test/autoconfigure/graphql/tester/WebGraphQlTesterAutoConfiguration.java

@@ -0,0 +1,51 @@
+/*
+ * Copyright 2020-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.test.autoconfigure.graphql.tester;
+
+import org.springframework.boot.autoconfigure.AutoConfigureAfter;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnBean;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
+import org.springframework.boot.autoconfigure.graphql.GraphQlProperties;
+import org.springframework.boot.test.autoconfigure.web.reactive.WebTestClientAutoConfiguration;
+import org.springframework.boot.test.autoconfigure.web.servlet.MockMvcAutoConfiguration;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.graphql.test.tester.WebGraphQlTester;
+import org.springframework.test.web.reactive.server.WebTestClient;
+import org.springframework.web.reactive.function.client.WebClient;
+
+/**
+ * Auto-configuration for {@link WebGraphQlTester}.
+ *
+ * @author Brian Clozel
+ * @since 2.7.0
+ */
+@Configuration(proxyBeanMethods = false)
+@ConditionalOnClass({ WebClient.class, WebTestClient.class, WebGraphQlTester.class })
+@AutoConfigureAfter({ WebTestClientAutoConfiguration.class, MockMvcAutoConfiguration.class })
+public class WebGraphQlTesterAutoConfiguration {
+
+	@Bean
+	@ConditionalOnBean(WebTestClient.class)
+	@ConditionalOnMissingBean
+	public WebGraphQlTester webTestClientGraphQlTester(WebTestClient webTestClient, GraphQlProperties properties) {
+		WebTestClient mutatedWebTestClient = webTestClient.mutate().baseUrl(properties.getPath()).build();
+		return WebGraphQlTester.create(mutatedWebTestClient);
+	}
+
+}

spring-boot-project/spring-boot-test-autoconfigure/src/main/java/org/springframework/boot/test/autoconfigure/graphql/tester/package-info.java

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2020-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * Auto-configuration for GraphQL tester.
+ */
+package org.springframework.boot.test.autoconfigure.graphql.tester;

spring-boot-project/spring-boot-test-autoconfigure/src/main/resources/META-INF/spring.factories

@@ -186,6 +186,20 @@ org.springframework.boot.autoconfigure.web.servlet.error.ErrorMvcAutoConfigurati
 org.springframework.boot.autoconfigure.web.servlet.HttpEncodingAutoConfiguration,\
 org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration
 
+# AutoConfigureGraphQl auto-configuration imports
+org.springframework.boot.test.autoconfigure.graphql.AutoConfigureGraphQl=\
+org.springframework.boot.autoconfigure.http.codec.CodecsAutoConfiguration,\
+org.springframework.boot.autoconfigure.validation.ValidationAutoConfiguration,\
+org.springframework.boot.autoconfigure.graphql.GraphQlAutoConfiguration
+
+# AutoConfigureGraphQlTester auto-configuration imports
+org.springframework.boot.test.autoconfigure.graphql.tester.AutoConfigureGraphQlTester=\
+org.springframework.boot.test.autoconfigure.graphql.tester.GraphQlTesterAutoConfiguration
+
+# AutoConfigureWebGraphQlTester auto-configuration imports
+org.springframework.boot.test.autoconfigure.graphql.tester.AutoConfigureWebGraphQlTester=\
+org.springframework.boot.test.autoconfigure.graphql.tester.WebGraphQlTesterAutoConfiguration
+
 # AutoConfigureWebServiceClient
 org.springframework.boot.test.autoconfigure.webservices.client.AutoConfigureWebServiceClient=\
 org.springframework.boot.test.autoconfigure.webservices.client.WebServiceClientTemplateAutoConfiguration,\

spring-boot-project/spring-boot-test-autoconfigure/src/test/java/org/springframework/boot/test/autoconfigure/graphql/Book.java

@@ -0,0 +1,71 @@
+/*
+ * Copyright 2020-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.test.autoconfigure.graphql;
+
+public class Book {
+
+	String id;
+
+	String name;
+
+	int pageCount;
+
+	String author;
+
+	public Book() {
+	}
+
+	public Book(String id, String name, int pageCount, String author) {
+		this.id = id;
+		this.name = name;
+		this.pageCount = pageCount;
+		this.author = author;
+	}
+
+	public String getId() {
+		return this.id;
+	}
+
+	public void setId(String id) {
+		this.id = id;
+	}
+
+	public String getName() {
+		return this.name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	public int getPageCount() {
+		return this.pageCount;
+	}
+
+	public void setPageCount(int pageCount) {
+		this.pageCount = pageCount;
+	}
+
+	public String getAuthor() {
+		return this.author;
+	}
+
+	public void setAuthor(String author) {
+		this.author = author;
+	}
+
+}

spring-boot-project/spring-boot-test-autoconfigure/src/test/java/org/springframework/boot/test/autoconfigure/graphql/BookController.java

@@ -0,0 +1,36 @@
+/*
+ * Copyright 2020-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.test.autoconfigure.graphql;
+
+import org.springframework.graphql.data.method.annotation.Argument;
+import org.springframework.graphql.data.method.annotation.QueryMapping;
+import org.springframework.stereotype.Controller;
+
+/**
+ * Example {@code @Controller} to be tested with {@link GraphQlTest @GraphQlTest}.
+ *
+ * @author Brian Clozel
+ */
+@Controller
+public class BookController {
+
+	@QueryMapping
+	public Book bookById(@Argument String id) {
+		return new Book("42", "Sample Book", 100, "Jane Spring");
+	}
+
+}

spring-boot-project/spring-boot-test-autoconfigure/src/test/java/org/springframework/boot/test/autoconfigure/graphql/ExampleGraphQlApplication.java

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2020-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.test.autoconfigure.graphql;
+
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+/**
+ * Example {@link SpringBootApplication @SpringBootApplication} used with
+ * {@link GraphQlTest @GraphQlTest} tests.
+ *
+ * @author Brian Clozel
+ */
+@SpringBootApplication
+public class ExampleGraphQlApplication {
+
+}

spring-boot-project/spring-boot-test-autoconfigure/src/test/java/org/springframework/boot/test/autoconfigure/graphql/GraphQlTestIntegrationTest.java

@@ -0,0 +1,41 @@
+/*
+ * Copyright 2020-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.test.autoconfigure.graphql;
+
+import org.junit.jupiter.api.Test;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.graphql.test.tester.GraphQlTester;
+
+/**
+ * Integration test for {@link GraphQlTest @GraphQlTest} annotated tests.
+ *
+ * @author Brian Clozel
+ */
+@GraphQlTest(BookController.class)
+public class GraphQlTestIntegrationTest {
+
+	@Autowired
+	private GraphQlTester graphQlTester;
+
+	@Test
+	void getBookdByIdShouldReturnTestBook() {
+		String query = "{ bookById(id: \"book-1\"){ id name pageCount author } }";
+		this.graphQlTester.query(query).execute().path("data.bookById.id").entity(String.class).isEqualTo("42");
+	}
+
+}

spring-boot-project/spring-boot-test-autoconfigure/src/test/java/org/springframework/boot/test/autoconfigure/graphql/GraphQlTypeExcludeFilterTests.java

@@ -0,0 +1,184 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.test.autoconfigure.graphql;
+
+import java.io.IOException;
+
+import com.fasterxml.jackson.databind.module.SimpleModule;
+import graphql.schema.idl.RuntimeWiring;
+import org.junit.jupiter.api.Test;
+import reactor.core.publisher.Mono;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.FilterType;
+import org.springframework.core.type.classreading.MetadataReader;
+import org.springframework.core.type.classreading.MetadataReaderFactory;
+import org.springframework.core.type.classreading.SimpleMetadataReaderFactory;
+import org.springframework.graphql.execution.RuntimeWiringConfigurer;
+import org.springframework.graphql.web.WebInput;
+import org.springframework.graphql.web.WebInterceptor;
+import org.springframework.graphql.web.WebInterceptorChain;
+import org.springframework.graphql.web.WebOutput;
+import org.springframework.stereotype.Controller;
+import org.springframework.stereotype.Repository;
+import org.springframework.stereotype.Service;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for {@link GraphQlTypeExcludeFilter}
+ *
+ * @author Brian Clozel
+ */
+class GraphQlTypeExcludeFilterTests {
+
+	private MetadataReaderFactory metadataReaderFactory = new SimpleMetadataReaderFactory();
+
+	@Test
+	void matchWhenHasNoControllers() throws Exception {
+		GraphQlTypeExcludeFilter filter = new GraphQlTypeExcludeFilter(WithNoControllers.class);
+		assertThat(excludes(filter, Controller1.class)).isFalse();
+		assertThat(excludes(filter, Controller2.class)).isFalse();
+		assertThat(excludes(filter, ExampleRuntimeWiringConfigurer.class)).isFalse();
+		assertThat(excludes(filter, ExampleService.class)).isTrue();
+		assertThat(excludes(filter, ExampleRepository.class)).isTrue();
+		assertThat(excludes(filter, ExampleWebInterceptor.class)).isTrue();
+		assertThat(excludes(filter, ExampleModule.class)).isFalse();
+	}
+
+	@Test
+	void matchWhenHasController() throws Exception {
+		GraphQlTypeExcludeFilter filter = new GraphQlTypeExcludeFilter(WithController.class);
+		assertThat(excludes(filter, Controller1.class)).isFalse();
+		assertThat(excludes(filter, Controller2.class)).isTrue();
+		assertThat(excludes(filter, ExampleRuntimeWiringConfigurer.class)).isFalse();
+		assertThat(excludes(filter, ExampleService.class)).isTrue();
+		assertThat(excludes(filter, ExampleRepository.class)).isTrue();
+		assertThat(excludes(filter, ExampleWebInterceptor.class)).isTrue();
+		assertThat(excludes(filter, ExampleModule.class)).isFalse();
+	}
+
+	@Test
+	void matchNotUsingDefaultFilters() throws Exception {
+		GraphQlTypeExcludeFilter filter = new GraphQlTypeExcludeFilter(NotUsingDefaultFilters.class);
+		assertThat(excludes(filter, Controller1.class)).isTrue();
+		assertThat(excludes(filter, Controller2.class)).isTrue();
+		assertThat(excludes(filter, ExampleRuntimeWiringConfigurer.class)).isTrue();
+		assertThat(excludes(filter, ExampleService.class)).isTrue();
+		assertThat(excludes(filter, ExampleRepository.class)).isTrue();
+		assertThat(excludes(filter, ExampleWebInterceptor.class)).isTrue();
+		assertThat(excludes(filter, ExampleModule.class)).isTrue();
+	}
+
+	@Test
+	void matchWithIncludeFilter() throws Exception {
+		GraphQlTypeExcludeFilter filter = new GraphQlTypeExcludeFilter(WithIncludeFilter.class);
+		assertThat(excludes(filter, Controller1.class)).isFalse();
+		assertThat(excludes(filter, Controller2.class)).isFalse();
+		assertThat(excludes(filter, ExampleRuntimeWiringConfigurer.class)).isFalse();
+		assertThat(excludes(filter, ExampleService.class)).isTrue();
+		assertThat(excludes(filter, ExampleRepository.class)).isFalse();
+		assertThat(excludes(filter, ExampleWebInterceptor.class)).isTrue();
+		assertThat(excludes(filter, ExampleModule.class)).isFalse();
+	}
+
+	@Test
+	void matchWithExcludeFilter() throws Exception {
+		GraphQlTypeExcludeFilter filter = new GraphQlTypeExcludeFilter(WithExcludeFilter.class);
+		assertThat(excludes(filter, Controller1.class)).isTrue();
+		assertThat(excludes(filter, Controller2.class)).isFalse();
+		assertThat(excludes(filter, ExampleRuntimeWiringConfigurer.class)).isFalse();
+		assertThat(excludes(filter, ExampleService.class)).isTrue();
+		assertThat(excludes(filter, ExampleRepository.class)).isTrue();
+		assertThat(excludes(filter, ExampleWebInterceptor.class)).isTrue();
+		assertThat(excludes(filter, ExampleModule.class)).isFalse();
+	}
+
+	private boolean excludes(GraphQlTypeExcludeFilter filter, Class<?> type) throws IOException {
+		MetadataReader metadataReader = this.metadataReaderFactory.getMetadataReader(type.getName());
+		return filter.match(metadataReader, this.metadataReaderFactory);
+	}
+
+	@GraphQlTest
+	static class WithNoControllers {
+
+	}
+
+	@GraphQlTest(Controller1.class)
+	static class WithController {
+
+	}
+
+	@GraphQlTest(useDefaultFilters = false)
+	static class NotUsingDefaultFilters {
+
+	}
+
+	@GraphQlTest(includeFilters = @ComponentScan.Filter(Repository.class))
+	static class WithIncludeFilter {
+
+	}
+
+	@GraphQlTest(excludeFilters = @ComponentScan.Filter(type = FilterType.ASSIGNABLE_TYPE, classes = Controller1.class))
+	static class WithExcludeFilter {
+
+	}
+
+	@Controller
+	static class Controller1 {
+
+	}
+
+	@Controller
+	static class Controller2 {
+
+	}
+
+	@Service
+	static class ExampleService {
+
+	}
+
+	@Repository
+	static class ExampleRepository {
+
+	}
+
+	static class ExampleRuntimeWiringConfigurer implements RuntimeWiringConfigurer {
+
+		@Override
+		public void configure(RuntimeWiring.Builder builder) {
+
+		}
+
+	}
+
+	static class ExampleWebInterceptor implements WebInterceptor {
+
+		@Override
+		public Mono<WebOutput> intercept(WebInput webInput, WebInterceptorChain chain) {
+			return null;
+		}
+
+	}
+
+	@SuppressWarnings("serial")
+	static class ExampleModule extends SimpleModule {
+
+	}
+
+}

spring-boot-project/spring-boot-test-autoconfigure/src/test/java/org/springframework/boot/test/autoconfigure/graphql/tester/GraphQlTesterAutoConfigurationTests.java

@@ -0,0 +1,62 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.test.autoconfigure.graphql.tester;
+
+import org.junit.jupiter.api.Test;
+
+import org.springframework.boot.autoconfigure.AutoConfigurations;
+import org.springframework.boot.test.context.runner.ApplicationContextRunner;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.graphql.GraphQlService;
+import org.springframework.graphql.test.tester.GraphQlTester;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.Mockito.mock;
+
+/**
+ * Tests for {@link GraphQlTesterAutoConfiguration}.
+ *
+ * @author Brian Clozel
+ */
+class GraphQlTesterAutoConfigurationTests {
+
+	private final ApplicationContextRunner contextRunner = new ApplicationContextRunner()
+			.withConfiguration(AutoConfigurations.of(GraphQlTesterAutoConfiguration.class));
+
+	@Test
+	void shouldNotContributeTesterIfGraphQlServiceNotPresent() {
+		this.contextRunner.run((context) -> assertThat(context).hasNotFailed().doesNotHaveBean(GraphQlTester.class));
+	}
+
+	@Test
+	void shouldContributeTester() {
+		this.contextRunner.withUserConfiguration(CustomGraphQlServiceConfiguration.class)
+				.run((context) -> assertThat(context).hasNotFailed().hasSingleBean(GraphQlTester.class));
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	static class CustomGraphQlServiceConfiguration {
+
+		@Bean
+		GraphQlService graphQlService() {
+			return mock(GraphQlService.class);
+		}
+
+	}
+
+}

spring-boot-project/spring-boot-test-autoconfigure/src/test/resources/graphql/schema.graphqls

@@ -0,0 +1,10 @@
+type Query {
+    bookById(id: ID): Book
+}
+
+type Book {
+    id: ID
+    name: String
+    pageCount: Int
+    author: String
+}

spring-boot-project/spring-boot-test/build.gradle

@@ -36,6 +36,7 @@ dependencies {
 	optional("org.springframework:spring-test")
 	optional("org.springframework:spring-web")
 	optional("org.springframework:spring-webflux")
+	optional("org.springframework.graphql:spring-graphql-test")
 	optional("net.sourceforge.htmlunit:htmlunit") {
 		exclude(group: "commons-logging", module: "commons-logging")
 	}

spring-boot-project/spring-boot-test/src/main/java/org/springframework/boot/test/graphql/tester/GraphQlTesterContextCustomizer.java

@@ -0,0 +1,218 @@
+/*
+ * Copyright 2020-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.test.graphql.tester;
+
+import org.springframework.beans.BeansException;
+import org.springframework.beans.factory.BeanFactory;
+import org.springframework.beans.factory.BeanFactoryAware;
+import org.springframework.beans.factory.BeanFactoryUtils;
+import org.springframework.beans.factory.FactoryBean;
+import org.springframework.beans.factory.ListableBeanFactory;
+import org.springframework.beans.factory.NoSuchBeanDefinitionException;
+import org.springframework.beans.factory.config.BeanDefinition;
+import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
+import org.springframework.beans.factory.support.BeanDefinitionRegistry;
+import org.springframework.beans.factory.support.BeanDefinitionRegistryPostProcessor;
+import org.springframework.beans.factory.support.RootBeanDefinition;
+import org.springframework.boot.WebApplicationType;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.web.server.AbstractConfigurableWebServerFactory;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.ApplicationContextAware;
+import org.springframework.context.ConfigurableApplicationContext;
+import org.springframework.core.Ordered;
+import org.springframework.graphql.test.tester.GraphQlTester;
+import org.springframework.graphql.test.tester.WebGraphQlTester;
+import org.springframework.test.context.ContextCustomizer;
+import org.springframework.test.context.MergedContextConfiguration;
+import org.springframework.test.context.TestContextAnnotationUtils;
+import org.springframework.test.web.reactive.server.WebTestClient;
+import org.springframework.util.ClassUtils;
+import org.springframework.util.StringUtils;
+import org.springframework.web.context.WebApplicationContext;
+
+/**
+ * {@link ContextCustomizer} for {@link GraphQlTester}.
+ *
+ * @author Brian Clozel
+ */
+class GraphQlTesterContextCustomizer implements ContextCustomizer {
+
+	@Override
+	public void customizeContext(ConfigurableApplicationContext context, MergedContextConfiguration mergedConfig) {
+		SpringBootTest springBootTest = TestContextAnnotationUtils.findMergedAnnotation(mergedConfig.getTestClass(),
+				SpringBootTest.class);
+		if (springBootTest.webEnvironment().isEmbedded()) {
+			registerGraphQlTester(context);
+		}
+	}
+
+	private void registerGraphQlTester(ConfigurableApplicationContext context) {
+		ConfigurableListableBeanFactory beanFactory = context.getBeanFactory();
+		if (beanFactory instanceof BeanDefinitionRegistry) {
+			registerGraphQlTester((BeanDefinitionRegistry) beanFactory);
+		}
+	}
+
+	private void registerGraphQlTester(BeanDefinitionRegistry registry) {
+		RootBeanDefinition definition = new RootBeanDefinition(GraphQlTesterRegistrar.class);
+		definition.setRole(BeanDefinition.ROLE_INFRASTRUCTURE);
+		registry.registerBeanDefinition(GraphQlTesterRegistrar.class.getName(), definition);
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		return (obj != null) && (obj.getClass() == getClass());
+	}
+
+	@Override
+	public int hashCode() {
+		return getClass().hashCode();
+	}
+
+	private static class GraphQlTesterRegistrar
+			implements BeanDefinitionRegistryPostProcessor, Ordered, BeanFactoryAware {
+
+		private BeanFactory beanFactory;
+
+		@Override
+		public void setBeanFactory(BeanFactory beanFactory) throws BeansException {
+			this.beanFactory = beanFactory;
+		}
+
+		@Override
+		public void postProcessBeanDefinitionRegistry(BeanDefinitionRegistry registry) throws BeansException {
+			if (BeanFactoryUtils.beanNamesForTypeIncludingAncestors((ListableBeanFactory) this.beanFactory,
+					GraphQlTester.class, false, false).length == 0) {
+				registry.registerBeanDefinition(WebGraphQlTester.class.getName(),
+						new RootBeanDefinition(GraphQlTesterFactory.class));
+			}
+		}
+
+		@Override
+		public void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) throws BeansException {
+
+		}
+
+		@Override
+		public int getOrder() {
+			return Ordered.LOWEST_PRECEDENCE - 1;
+		}
+
+	}
+
+	public static class GraphQlTesterFactory implements FactoryBean<GraphQlTester>, ApplicationContextAware {
+
+		private static final String SERVLET_APPLICATION_CONTEXT_CLASS = "org.springframework.web.context.WebApplicationContext";
+
+		private static final String REACTIVE_APPLICATION_CONTEXT_CLASS = "org.springframework.boot.web.reactive.context.ReactiveWebApplicationContext";
+
+		private ApplicationContext applicationContext;
+
+		private GraphQlTester object;
+
+		@Override
+		public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
+			this.applicationContext = applicationContext;
+		}
+
+		@Override
+		public boolean isSingleton() {
+			return true;
+		}
+
+		@Override
+		public Class<?> getObjectType() {
+			return GraphQlTester.class;
+		}
+
+		@Override
+		public GraphQlTester getObject() throws Exception {
+			if (this.object == null) {
+				this.object = createGraphQlTester();
+			}
+			return this.object;
+		}
+
+		private WebGraphQlTester createGraphQlTester() {
+			WebTestClient webTestClient = this.applicationContext.getBean(WebTestClient.class);
+			boolean sslEnabled = isSslEnabled(this.applicationContext);
+			String port = this.applicationContext.getEnvironment().getProperty("local.server.port", "8080");
+			WebTestClient mutatedWebClient = webTestClient.mutate().baseUrl(getBaseUrl(sslEnabled, port)).build();
+			return WebGraphQlTester.create(mutatedWebClient);
+		}
+
+		private String getBaseUrl(boolean sslEnabled, String port) {
+			String basePath = deduceBasePath();
+			return (sslEnabled ? "https" : "http") + "://localhost:" + port + basePath;
+		}
+
+		private String deduceBasePath() {
+			return deduceServerBasePath() + findConfiguredGraphQlPath();
+		}
+
+		private String findConfiguredGraphQlPath() {
+			String configuredPath = this.applicationContext.getEnvironment().getProperty("spring.graphql.path");
+			return StringUtils.hasText(configuredPath) ? configuredPath : "/graphql";
+		}
+
+		private String deduceServerBasePath() {
+			String serverBasePath = "";
+			WebApplicationType webApplicationType = deduceFromApplicationContext(this.applicationContext.getClass());
+			if (webApplicationType == WebApplicationType.REACTIVE) {
+				serverBasePath = this.applicationContext.getEnvironment().getProperty("spring.webflux.base-path");
+
+			}
+			else if (webApplicationType == WebApplicationType.SERVLET) {
+				serverBasePath = ((WebApplicationContext) this.applicationContext).getServletContext().getContextPath();
+			}
+			return (serverBasePath != null) ? serverBasePath : "";
+		}
+
+		static WebApplicationType deduceFromApplicationContext(Class<?> applicationContextClass) {
+			if (isAssignable(SERVLET_APPLICATION_CONTEXT_CLASS, applicationContextClass)) {
+				return WebApplicationType.SERVLET;
+			}
+			if (isAssignable(REACTIVE_APPLICATION_CONTEXT_CLASS, applicationContextClass)) {
+				return WebApplicationType.REACTIVE;
+			}
+			return WebApplicationType.NONE;
+		}
+
+		private static boolean isAssignable(String target, Class<?> type) {
+			try {
+				return ClassUtils.resolveClassName(target, null).isAssignableFrom(type);
+			}
+			catch (Throwable ex) {
+				return false;
+			}
+		}
+
+		private boolean isSslEnabled(ApplicationContext context) {
+			try {
+				AbstractConfigurableWebServerFactory webServerFactory = context
+						.getBean(AbstractConfigurableWebServerFactory.class);
+				return webServerFactory.getSsl() != null && webServerFactory.getSsl().isEnabled();
+			}
+			catch (NoSuchBeanDefinitionException ex) {
+				return false;
+			}
+		}
+
+	}
+
+}

spring-boot-project/spring-boot-test/src/main/java/org/springframework/boot/test/graphql/tester/GraphQlTesterContextCustomizerFactory.java

@@ -0,0 +1,54 @@
+/*
+ * Copyright 2020-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.test.graphql.tester;
+
+import java.util.List;
+
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.graphql.test.tester.GraphQlTester;
+import org.springframework.test.context.ContextConfigurationAttributes;
+import org.springframework.test.context.ContextCustomizer;
+import org.springframework.test.context.ContextCustomizerFactory;
+import org.springframework.test.context.TestContextAnnotationUtils;
+import org.springframework.util.ClassUtils;
+
+/**
+ * {@link ContextCustomizerFactory} for {@link GraphQlTester}.
+ *
+ * @author Brian Clozel
+ * @see GraphQlTesterContextCustomizer
+ */
+class GraphQlTesterContextCustomizerFactory implements ContextCustomizerFactory {
+
+	private static final String GRAPHQLTESTER_CLASS = "org.springframework.graphql.test.tester.GraphQlTester";
+
+	private static final String WEBTESTCLIENT_CLASS = "org.springframework.test.web.reactive.server.WebTestClient";
+
+	@Override
+	public ContextCustomizer createContextCustomizer(Class<?> testClass,
+			List<ContextConfigurationAttributes> configAttributes) {
+		SpringBootTest springBootTest = TestContextAnnotationUtils.findMergedAnnotation(testClass,
+				SpringBootTest.class);
+		return (springBootTest != null && isGraphQlTesterPresent()) ? new GraphQlTesterContextCustomizer() : null;
+	}
+
+	private boolean isGraphQlTesterPresent() {
+		return ClassUtils.isPresent(WEBTESTCLIENT_CLASS, getClass().getClassLoader())
+				&& ClassUtils.isPresent(GRAPHQLTESTER_CLASS, getClass().getClassLoader());
+	}
+
+}

spring-boot-project/spring-boot-test/src/main/java/org/springframework/boot/test/graphql/tester/package-info.java

@@ -0,0 +1,20 @@
+/*
+ * Copyright 2020-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+/**
+ * {@link org.springframework.graphql.test.tester.GraphQlTester} utilities.
+ */
+package org.springframework.boot.test.graphql.tester;

spring-boot-project/spring-boot-test/src/main/resources/META-INF/spring.factories

@@ -2,6 +2,7 @@
 org.springframework.test.context.ContextCustomizerFactory=\
 org.springframework.boot.test.context.ImportsContextCustomizerFactory,\
 org.springframework.boot.test.context.filter.ExcludeFilterContextCustomizerFactory,\
+org.springframework.boot.test.graphql.tester.GraphQlTesterContextCustomizerFactory,\
 org.springframework.boot.test.json.DuplicateJsonObjectContextCustomizerFactory,\
 org.springframework.boot.test.mock.mockito.MockitoContextCustomizerFactory,\
 org.springframework.boot.test.web.client.TestRestTemplateContextCustomizerFactory,\

spring-boot-project/spring-boot-test/src/test/java/org/springframework/boot/test/graphql/tester/GraphQlTesterContextCustomizerIntegrationTests.java

@@ -0,0 +1,88 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.test.graphql.tester;
+
+import java.util.Collections;
+import java.util.Map;
+
+import org.junit.jupiter.api.Test;
+import reactor.core.publisher.Mono;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.web.embedded.tomcat.TomcatReactiveWebServerFactory;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.io.buffer.DefaultDataBufferFactory;
+import org.springframework.graphql.test.tester.GraphQlTester;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.http.server.reactive.ContextPathCompositeHandler;
+import org.springframework.http.server.reactive.HttpHandler;
+import org.springframework.http.server.reactive.ServerHttpRequest;
+import org.springframework.http.server.reactive.ServerHttpResponse;
+import org.springframework.test.annotation.DirtiesContext;
+
+/**
+ * Integration test for {@link GraphQlTesterContextCustomizer}.
+ *
+ * @author Brian Clozel
+ */
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT,
+		properties = "spring.main.web-application-type=reactive")
+@DirtiesContext
+class GraphQlTesterContextCustomizerIntegrationTests {
+
+	@Autowired
+	GraphQlTester graphQlTester;
+
+	@Test
+	void shouldHandleGraphQlRequests() {
+		this.graphQlTester.query("{}").executeAndVerify();
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	static class TestConfig {
+
+		@Bean
+		TomcatReactiveWebServerFactory webServerFactory() {
+			return new TomcatReactiveWebServerFactory(0);
+		}
+
+		@Bean
+		HttpHandler httpHandler() {
+			TestHandler httpHandler = new TestHandler();
+			Map<String, HttpHandler> handlersMap = Collections.singletonMap("/graphql", httpHandler);
+			return new ContextPathCompositeHandler(handlersMap);
+		}
+
+	}
+
+	static class TestHandler implements HttpHandler {
+
+		private static final DefaultDataBufferFactory factory = new DefaultDataBufferFactory();
+
+		@Override
+		public Mono<Void> handle(ServerHttpRequest request, ServerHttpResponse response) {
+			response.setStatusCode(HttpStatus.OK);
+			response.getHeaders().setContentType(MediaType.APPLICATION_JSON);
+			return response.writeWith(Mono.just(factory.wrap("{\"data\":{}}".getBytes())));
+		}
+
+	}
+
+}

spring-boot-project/spring-boot-test/src/test/java/org/springframework/boot/test/graphql/tester/GraphQlTesterContextCustomizerWithCustomBasePathTests.java

@@ -0,0 +1,88 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.test.graphql.tester;
+
+import java.util.Collections;
+import java.util.Map;
+
+import org.junit.jupiter.api.Test;
+import reactor.core.publisher.Mono;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.web.embedded.tomcat.TomcatReactiveWebServerFactory;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.io.buffer.DefaultDataBufferFactory;
+import org.springframework.graphql.test.tester.GraphQlTester;
+import org.springframework.http.HttpStatus;
+import org.springframework.http.MediaType;
+import org.springframework.http.server.reactive.ContextPathCompositeHandler;
+import org.springframework.http.server.reactive.HttpHandler;
+import org.springframework.http.server.reactive.ServerHttpRequest;
+import org.springframework.http.server.reactive.ServerHttpResponse;
+import org.springframework.test.context.TestPropertySource;
+
+/**
+ * Tests for {@link GraphQlTesterContextCustomizer} with a custom context path for a
+ * Reactive web application.
+ *
+ * @author Brian Clozel
+ */
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
+@TestPropertySource(properties = { "spring.main.web-application-type=reactive", "spring.webflux.base-path=/test" })
+class GraphQlTesterContextCustomizerWithCustomBasePathTests {
+
+	@Autowired
+	GraphQlTester graphQlTester;
+
+	@Test
+	void shouldHandleGraphQlRequests() {
+		this.graphQlTester.query("{}").executeAndVerify();
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	static class TestConfig {
+
+		@Bean
+		TomcatReactiveWebServerFactory webServerFactory() {
+			return new TomcatReactiveWebServerFactory(0);
+		}
+
+		@Bean
+		HttpHandler httpHandler() {
+			TestHandler httpHandler = new TestHandler();
+			Map<String, HttpHandler> handlersMap = Collections.singletonMap("/test/graphql", httpHandler);
+			return new ContextPathCompositeHandler(handlersMap);
+		}
+
+	}
+
+	static class TestHandler implements HttpHandler {
+
+		private static final DefaultDataBufferFactory factory = new DefaultDataBufferFactory();
+
+		@Override
+		public Mono<Void> handle(ServerHttpRequest request, ServerHttpResponse response) {
+			response.setStatusCode(HttpStatus.OK);
+			response.getHeaders().setContentType(MediaType.APPLICATION_JSON);
+			return response.writeWith(Mono.just(factory.wrap("{\"data\":{}}".getBytes())));
+		}
+
+	}
+
+}

spring-boot-project/spring-boot-test/src/test/java/org/springframework/boot/test/graphql/tester/GraphQlTesterContextCustomizerWithCustomContextPathTests.java

@@ -0,0 +1,80 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.springframework.boot.test.graphql.tester;
+
+import org.junit.jupiter.api.Test;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.web.embedded.tomcat.TomcatServletWebServerFactory;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Import;
+import org.springframework.graphql.test.tester.GraphQlTester;
+import org.springframework.http.MediaType;
+import org.springframework.test.context.TestPropertySource;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.servlet.DispatcherServlet;
+
+/**
+ * Tests for {@link GraphQlTesterContextCustomizer} with a custom context path for a
+ * Servlet web application.
+ *
+ * @author Brian Clozel
+ */
+@SpringBootTest(webEnvironment = SpringBootTest.WebEnvironment.RANDOM_PORT)
+@TestPropertySource(properties = "server.servlet.context-path=/test")
+class GraphQlTesterContextCustomizerWithCustomContextPathTests {
+
+	@Autowired
+	GraphQlTester graphQlTester;
+
+	@Test
+	void shouldHandleGraphQlRequests() {
+		this.graphQlTester.query("{}").executeAndVerify();
+	}
+
+	@Configuration(proxyBeanMethods = false)
+	@Import(TestController.class)
+	static class TestConfig {
+
+		@Bean
+		TomcatServletWebServerFactory webServerFactory() {
+			TomcatServletWebServerFactory factory = new TomcatServletWebServerFactory(0);
+			factory.setContextPath("/test");
+			return factory;
+		}
+
+		@Bean
+		DispatcherServlet dispatcherServlet() {
+			return new DispatcherServlet();
+		}
+
+	}
+
+	@RestController
+	static class TestController {
+
+		@PostMapping(path = "/graphql", produces = MediaType.APPLICATION_JSON_VALUE)
+		String graphql() {
+			return "{}";
+		}
+
+	}
+
+}

spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-graphql/build.gradle

@@ -0,0 +1,16 @@
+plugins {
+	id "java"
+	id "org.springframework.boot.conventions"
+}
+
+description = "Spring Boot GraphQL smoke test"
+
+dependencies {
+	implementation(project(":spring-boot-project:spring-boot-starters:spring-boot-starter-graphql"))
+	implementation(project(":spring-boot-project:spring-boot-starters:spring-boot-starter-web"))
+	implementation(project(":spring-boot-project:spring-boot-starters:spring-boot-starter-security"))
+
+	testImplementation(project(":spring-boot-project:spring-boot-starters:spring-boot-starter-test"))
+	testImplementation(project(":spring-boot-project:spring-boot-starters:spring-boot-starter-webflux"))
+	testImplementation('org.springframework.graphql:spring-graphql-test')
+}

spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-graphql/src/main/java/smoketest/graphql/GreetingController.java

@@ -0,0 +1,37 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package smoketest.graphql;
+
+import org.springframework.graphql.data.method.annotation.Argument;
+import org.springframework.graphql.data.method.annotation.QueryMapping;
+import org.springframework.stereotype.Controller;
+
+@Controller
+public class GreetingController {
+
+	private final GreetingService greetingService;
+
+	public GreetingController(GreetingService greetingService) {
+		this.greetingService = greetingService;
+	}
+
+	@QueryMapping
+	public String greeting(@Argument String name) {
+		return this.greetingService.greet(name);
+	}
+
+}

spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-graphql/src/main/java/smoketest/graphql/GreetingService.java

@@ -0,0 +1,30 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package smoketest.graphql;
+
+import org.springframework.security.access.prepost.PreAuthorize;
+import org.springframework.stereotype.Component;
+
+@Component
+public class GreetingService {
+
+	@PreAuthorize("hasRole('ADMIN')")
+	public String greet(String name) {
+		return "Hello, " + name + "!";
+	}
+
+}

spring-boot-tests/spring-boot-smoke-tests/spring-boot-smoke-test-graphql/src/main/java/smoketest/graphql/Project.java

@@ -0,0 +1,65 @@
+/*
+ * Copyright 2012-2021 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package smoketest.graphql;
+
+import java.util.Objects;
+
+public class Project {
+
+	private String slug;
+
+	private String name;
+
+	public Project(String slug, String name) {
+		this.slug = slug;
+		this.name = name;
+	}
+
+	public String getSlug() {
+		return this.slug;
+	}
+
+	public void setSlug(String slug) {
+		this.slug = slug;
+	}
+
+	public String getName() {
+		return this.name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	@Override
+	public boolean equals(Object o) {
+		if (this == o) {
+			return true;
+		}
+		if (o == null || getClass() != o.getClass()) {
+			return false;
+		}
+		Project project = (Project) o;
+		return this.slug.equals(project.slug);
+	}
+
+	@Override
+	public int hashCode() {
+		return Objects.hash(this.slug);
+	}
+
+}