Polish

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/endpoint/Sanitizer.java

@@ -65,18 +65,38 @@ public class Sanitizer {
 		DEFAULT_KEYS_TO_SANITIZE.addAll(URI_USERINFO_KEYS);
 	}
 
+	/**
+	 * Create a new {@link Sanitizer} instance with a default set of keys to sanitize.
+	 */
 	public Sanitizer() {
 		this(DEFAULT_KEYS_TO_SANITIZE.toArray(new String[0]));
 	}
 
+	/**
+	 * Create a new {@link Sanitizer} instance with specific keys to sanitize.
+	 * @param keysToSanitize the keys to sanitize
+	 */
 	public Sanitizer(String... keysToSanitize) {
 		this(Collections.emptyList(), keysToSanitize);
 	}
 
+	/**
+	 * Create a new {@link Sanitizer} instance with a default set of keys to sanitize and
+	 * additional sanitizing functions.
+	 * @param sanitizingFunctions the sanitizing functions to apply
+	 * @since 2.6.0
+	 */
 	public Sanitizer(Iterable<SanitizingFunction> sanitizingFunctions) {
 		this(sanitizingFunctions, DEFAULT_KEYS_TO_SANITIZE.toArray(new String[0]));
 	}
 
+	/**
+	 * Create a new {@link Sanitizer} instance with specific keys to sanitize and
+	 * additional sanitizing functions.
+	 * @param sanitizingFunctions the sanitizing functions to apply
+	 * @param keysToSanitize the keys to sanitize
+	 * @since 2.6.0
+	 */
 	public Sanitizer(Iterable<SanitizingFunction> sanitizingFunctions, String... keysToSanitize) {
 		sanitizingFunctions.forEach(this.sanitizingFunctions::add);
 		this.sanitizingFunctions.add(getDefaultSanitizingFunction());

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/health/AbstractHealthIndicator.java

@@ -84,17 +84,13 @@ public abstract class AbstractHealthIndicator implements HealthIndicator {
 		catch (Exception ex) {
 			builder.down(ex);
 		}
-		logExceptionIfPresent(builder);
+		logExceptionIfPresent(builder.getException());
 		return builder.build();
 	}
 
-	private void logExceptionIfPresent(Builder builder) {
-		Throwable ex = builder.getException();
+	private void logExceptionIfPresent(Throwable ex) {
 		if (ex != null && this.logger.isWarnEnabled()) {
-			String message = null;
-			if (ex instanceof Exception) {
-				message = this.healthCheckFailedMessage.apply((Exception) ex);
-			}
+			String message = (ex instanceof Exception) ? this.healthCheckFailedMessage.apply((Exception) ex) : null;
 			this.logger.warn(StringUtils.hasText(message) ? message : DEFAULT_MESSAGE, ex);
 		}
 	}

spring-boot-project/spring-boot-actuator/src/main/java/org/springframework/boot/actuate/health/Health.java

@@ -323,15 +323,6 @@ public final class Health extends HealthComponent {
 			return this;
 		}
 
-		/**
-		 * Return the {@link Exception}.
-		 * @return the exception or {@code null} if the builder has no exception
-		 * @since 2.6.0
-		 */
-		public Throwable getException() {
-			return this.exception;
-		}
-
 		/**
 		 * Create a new {@link Health} instance with the previously specified code and
 		 * details.
@@ -341,6 +332,14 @@ public final class Health extends HealthComponent {
 			return new Health(this);
 		}
 
+		/**
+		 * Return the {@link Exception}.
+		 * @return the exception or {@code null} if the builder has no exception
+		 */
+		Throwable getException() {
+			return this.exception;
+		}
+
 	}
 
 }

spring-boot-project/spring-boot-actuator/src/test/java/org/springframework/boot/actuate/health/AbstractHealthIndicatorTests.java

@@ -16,6 +16,8 @@
 
 package org.springframework.boot.actuate.health;
 
+import java.util.function.Consumer;
+
 import org.junit.jupiter.api.Test;
 import org.junit.jupiter.api.extension.ExtendWith;
 
@@ -36,76 +38,78 @@ class AbstractHealthIndicatorTests {
 
 	@Test
 	void healthCheckWhenUpDoesNotLogHealthCheckFailedMessage(CapturedOutput output) {
-		Health heath = new AbstractHealthIndicator("Test message") {
-			@Override
-			protected void doHealthCheck(Builder builder) {
-				builder.up();
-			}
-		}.health();
+		TestHealthIndicator indicator = new TestHealthIndicator("Test message", Builder::up);
+		Health heath = indicator.health();
 		assertThat(heath.getStatus()).isEqualTo(Status.UP);
 		assertThat(output).doesNotContain("Test message");
 	}
 
 	@Test
 	void healthCheckWhenDownWithExceptionThrownDoesNotLogHealthCheckFailedMessage(CapturedOutput output) {
-		Health heath = new AbstractHealthIndicator("Test message") {
-			@Override
-			protected void doHealthCheck(Builder builder) {
-				throw new IllegalStateException("Test exception");
-			}
-		}.health();
+		TestHealthIndicator indicator = new TestHealthIndicator("Test message", (builder) -> {
+			throw new IllegalStateException("Test exception");
+		});
+		Health heath = indicator.health();
 		assertThat(heath.getStatus()).isEqualTo(Status.DOWN);
 		assertThat(output).contains("Test message").contains("Test exception");
 	}
 
 	@Test
 	void healthCheckWhenDownWithExceptionConfiguredDoesNotLogHealthCheckFailedMessage(CapturedOutput output) {
-		Health heath = new AbstractHealthIndicator("Test message") {
-			@Override
-			protected void doHealthCheck(Builder builder) {
-				builder.down().withException(new IllegalStateException("Test exception"));
-			}
-		}.health();
+		Health heath = new TestHealthIndicator("Test message",
+				(builder) -> builder.down().withException(new IllegalStateException("Test exception"))).health();
 		assertThat(heath.getStatus()).isEqualTo(Status.DOWN);
 		assertThat(output).contains("Test message").contains("Test exception");
 	}
 
 	@Test
 	void healthCheckWhenDownWithExceptionConfiguredDoesNotLogHealthCheckFailedMessageTwice(CapturedOutput output) {
-		Health heath = new AbstractHealthIndicator("Test message") {
-			@Override
-			protected void doHealthCheck(Builder builder) {
-				IllegalStateException ex = new IllegalStateException("Test exception");
-				builder.down().withException(ex);
-				throw ex;
-			}
-		}.health();
+		TestHealthIndicator indicator = new TestHealthIndicator("Test message", (builder) -> {
+			IllegalStateException ex = new IllegalStateException("Test exception");
+			builder.down().withException(ex);
+			throw ex;
+		});
+		Health heath = indicator.health();
 		assertThat(heath.getStatus()).isEqualTo(Status.DOWN);
 		assertThat(output).contains("Test message").containsOnlyOnce("Test exception");
 	}
 
 	@Test
 	void healthCheckWhenDownWithExceptionAndNoFailureMessageLogsDefaultMessage(CapturedOutput output) {
-		Health heath = new AbstractHealthIndicator() {
-			@Override
-			protected void doHealthCheck(Builder builder) {
-				builder.down().withException(new IllegalStateException("Test exception"));
-			}
-		}.health();
+		TestHealthIndicator indicator = new TestHealthIndicator(
+				(builder) -> builder.down().withException(new IllegalStateException("Test exception")));
+		Health heath = indicator.health();
 		assertThat(heath.getStatus()).isEqualTo(Status.DOWN);
 		assertThat(output).contains("Health check failed").contains("Test exception");
 	}
 
 	@Test
 	void healthCheckWhenDownWithErrorLogsDefaultMessage(CapturedOutput output) {
-		Health heath = new AbstractHealthIndicator("Test Message") {
-			@Override
-			protected void doHealthCheck(Builder builder) {
-				builder.down().withException(new Error("Test error"));
-			}
-		}.health();
+		TestHealthIndicator indicator = new TestHealthIndicator("Test Message",
+				(builder) -> builder.down().withException(new Error("Test error")));
+		Health heath = indicator.health();
 		assertThat(heath.getStatus()).isEqualTo(Status.DOWN);
 		assertThat(output).contains("Health check failed").contains("Test error");
 	}
 
+	static class TestHealthIndicator extends AbstractHealthIndicator {
+
+		private Consumer<Builder> action;
+
+		TestHealthIndicator(String message, Consumer<Builder> action) {
+			super(message);
+			this.action = action;
+		}
+
+		TestHealthIndicator(Consumer<Builder> action) {
+			this.action = action;
+		}
+
+		@Override
+		protected void doHealthCheck(Builder builder) throws Exception {
+			this.action.accept(builder);
+		}
+
+	}
+
 }

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/data/elasticsearch/ReactiveElasticsearchRestClientAutoConfiguration.java

@@ -37,6 +37,7 @@ import org.springframework.data.elasticsearch.client.reactive.ReactiveElasticsea
 import org.springframework.data.elasticsearch.client.reactive.ReactiveRestClients;
 import org.springframework.data.elasticsearch.client.reactive.ReactiveRestClients.WebClientConfigurationCallback;
 import org.springframework.util.Assert;
+import org.springframework.util.ObjectUtils;
 import org.springframework.util.unit.DataSize;
 import org.springframework.web.reactive.function.client.ExchangeStrategies;
 import org.springframework.web.reactive.function.client.WebClient;
@@ -120,7 +121,11 @@ public class ReactiveElasticsearchRestClientAutoConfiguration {
 			if (this.deprecatedProperties.isCustomized()) {
 				return this.deprecatedProperties.getEndpoints();
 			}
-			return this.uris.stream().map((uri) -> uri.getHost() + ":" + uri.getPort()).collect(Collectors.toList());
+			return this.uris.stream().map(this::getEndpoint).collect(Collectors.toList());
+		}
+
+		private String getEndpoint(URI uri) {
+			return uri.getHost() + ":" + uri.getPort();
 		}
 
 		private Credentials getCredentials() {
@@ -132,13 +137,10 @@ public class ReactiveElasticsearchRestClientAutoConfiguration {
 			if (uriCredentials == null) {
 				return propertyCredentials;
 			}
-			if (propertyCredentials != null && !uriCredentials.equals(propertyCredentials)) {
-				throw new IllegalArgumentException(
-						"Credentials from URI user info do not match those from spring.elasticsearch.username and "
-								+ "spring.elasticsearch.password");
-			}
+			Assert.isTrue(propertyCredentials == null || uriCredentials.equals(propertyCredentials),
+					"Credentials from URI user info do not match those from spring.elasticsearch.username and "
+							+ "spring.elasticsearch.password");
 			return uriCredentials;
-
 		}
 
 		private Duration getConnectionTimeout() {
@@ -155,8 +157,8 @@ public class ReactiveElasticsearchRestClientAutoConfiguration {
 			if (this.deprecatedProperties.isCustomized()) {
 				return this.deprecatedProperties.isUseSsl();
 			}
-			Set<String> schemes = this.uris.stream().map((uri) -> uri.getScheme()).collect(Collectors.toSet());
-			Assert.isTrue(schemes.size() == 1, () -> "Configured Elasticsearch URIs have varying schemes");
+			Set<String> schemes = this.uris.stream().map(URI::getScheme).collect(Collectors.toSet());
+			Assert.isTrue(schemes.size() == 1, "Configured Elasticsearch URIs have varying schemes");
 			return schemes.iterator().next().equals("https");
 		}
 
@@ -189,29 +191,28 @@ public class ReactiveElasticsearchRestClientAutoConfiguration {
 			}
 
 			private static Credentials from(List<String> uris) {
-				Set<String> userInfos = uris.stream().map(URI::create).map((uri) -> uri.getUserInfo())
+				Set<String> userInfos = uris.stream().map(URI::create).map(URI::getUserInfo)
 						.collect(Collectors.toSet());
-				Assert.isTrue(userInfos.size() == 1, () -> "Configured Elasticsearch URIs have varying user infos");
+				Assert.isTrue(userInfos.size() == 1, "Configured Elasticsearch URIs have varying user infos");
 				String userInfo = userInfos.iterator().next();
-				if (userInfo != null) {
-					String[] parts = userInfo.split(":");
-					return new Credentials(parts[0], (parts.length == 2) ? parts[1] : "");
+				if (userInfo == null) {
+					return null;
 				}
-				return null;
+				String[] parts = userInfo.split(":");
+				String username = parts[0];
+				String password = (parts.length != 2) ? "" : parts[1];
+				return new Credentials(username, password);
 			}
 
 			private static Credentials from(ElasticsearchProperties properties) {
-				String username = properties.getUsername();
-				String password = properties.getPassword();
-				if (username == null && password == null) {
-					return null;
-				}
-				return new Credentials(username, password);
+				return getCredentials(properties.getUsername(), properties.getPassword());
 			}
 
 			private static Credentials from(DeprecatedReactiveElasticsearchRestClientProperties properties) {
-				String username = properties.getUsername();
-				String password = properties.getPassword();
+				return getCredentials(properties.getUsername(), properties.getPassword());
+			}
+
+			private static Credentials getCredentials(String username, String password) {
 				if (username == null && password == null) {
 					return null;
 				}
@@ -223,38 +224,20 @@ public class ReactiveElasticsearchRestClientAutoConfiguration {
 				if (this == obj) {
 					return true;
 				}
-				if (obj == null) {
-					return false;
-				}
-				if (getClass() != obj.getClass()) {
+				if (obj == null || getClass() != obj.getClass()) {
 					return false;
 				}
 				Credentials other = (Credentials) obj;
-				if (this.password == null) {
-					if (other.password != null) {
-						return false;
-					}
-				}
-				else if (!this.password.equals(other.password)) {
-					return false;
-				}
-				if (this.username == null) {
-					if (other.username != null) {
-						return false;
-					}
-				}
-				else if (!this.username.equals(other.username)) {
-					return false;
-				}
-				return true;
+				return ObjectUtils.nullSafeEquals(this.username, other.username)
+						&& ObjectUtils.nullSafeEquals(this.password, other.password);
 			}
 
 			@Override
 			public int hashCode() {
 				final int prime = 31;
 				int result = 1;
-				result = prime * result + ((this.password == null) ? 0 : this.password.hashCode());
-				result = prime * result + ((this.username == null) ? 0 : this.username.hashCode());
+				result = prime * result + ObjectUtils.nullSafeHashCode(this.username);
+				result = prime * result + ObjectUtils.nullSafeHashCode(this.password);
 				return result;
 			}
 

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

@@ -1081,7 +1081,6 @@ Long task timers require a separate metric name and can be stacked with a short
 
 [[actuator.metrics.supported.redis]]
 ==== Redis Metrics
-
 Auto-configuration registers a `MicrometerCommandLatencyRecorder` for the auto-configured `LettuceConnectionFactory`.
 For more details refer to the {lettuce-docs}#command.latency.metrics.micrometer[Micrometer Metrics section] of the Lettuce documentation.