diff --git a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/logging/log4j2/SpringBootConfigurationFactory.java b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/logging/log4j2/SpringBootConfigurationFactory.java
index 213f40ab4e..e9ff22905e 100644
--- a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/logging/log4j2/SpringBootConfigurationFactory.java
+++ b/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/logging/log4j2/SpringBootConfigurationFactory.java
@@ -27,12 +27,18 @@ import org.apache.logging.log4j.core.config.plugins.Plugin;
import org.springframework.boot.logging.LoggingSystem;
/**
- * Spring Boot {@link ConfigurationFactory} that prevents logger warnings from being
- * printed when the application first starts. This factory is ordered last and is
- * triggered by a {@code log4j2.springboot} classpath resource (which is bundled in this
- * jar). If the {@link Log4J2LoggingSystem} is active, a {@link DefaultConfiguration} is
- * returned with the expectation that the system will later re-initialize Log4J2 with the
- * correct configuration file.
+ * Spring Boot {@link ConfigurationFactory} that customizes Log4J2's default configuration
+ * to:
+ *
+ *
+ * - Prevent logger warnings from being printed when the application first starts.
+ *
- Disable its shutdown hook
+ *
+ *
+ * This factory is ordered last and is triggered by a {@code log4j2.springboot} classpath
+ * resource (which is bundled in this jar). If the {@link Log4J2LoggingSystem} is active,
+ * a custom {@link DefaultConfiguration} is returned with the expectation that the system
+ * will later re-initialize Log4J2 with the correct configuration file.
*
* @author Phillip Webb
* @since 1.5.0
@@ -53,9 +59,17 @@ public class SpringBootConfigurationFactory extends ConfigurationFactory {
ConfigurationSource source) {
if (source != null && source != ConfigurationSource.NULL_SOURCE
&& LoggingSystem.get(loggerContext.getClass().getClassLoader()) != null) {
- return new DefaultConfiguration();
+ return new SpringBootConfiguration();
}
return null;
}
+ private static final class SpringBootConfiguration extends DefaultConfiguration {
+
+ private SpringBootConfiguration() {
+ this.isShutdownHookEnabled = false;
+ }
+
+ }
+
}
diff --git a/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/logging/log4j2/SpringBootConfigurationFactoryTests.java b/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/logging/log4j2/SpringBootConfigurationFactoryTests.java
new file mode 100644
index 0000000000..f0babc7862
--- /dev/null
+++ b/spring-boot-project/spring-boot/src/test/java/org/springframework/boot/logging/log4j2/SpringBootConfigurationFactoryTests.java
@@ -0,0 +1,44 @@
+/*
+ * Copyright 2012-2018 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
+ *
+ * http://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.logging.log4j2;
+
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+
+import org.apache.logging.log4j.core.LoggerContext;
+import org.apache.logging.log4j.core.config.ConfigurationSource;
+import org.junit.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for {@link SpringBootConfigurationFactory}.
+ *
+ * @author Andy Wilkinson
+ */
+public class SpringBootConfigurationFactoryTests {
+
+ @Test
+ public void producesConfigurationWithShutdownHookDisabled() throws IOException {
+ ConfigurationSource source = new ConfigurationSource(
+ new ByteArrayInputStream(new byte[0]));
+ assertThat(new SpringBootConfigurationFactory()
+ .getConfiguration(new LoggerContext(""), source).isShutdownHookEnabled())
+ .isFalse();
+ }
+
+}