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Add Log4J 2 Logging Support #7

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2fd8dbd
Add Log4j 2 support
Mar 10, 2016
87850a2
add better javadoc
Mar 10, 2016
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Add Log4j 2 support
  • Loading branch information
Joseph Moore committed Mar 10, 2016
commit 2fd8dbd79feee5787d0d5caab11abd11893c1436
136 changes: 136 additions & 0 deletions aws-lambda-java-log4j2/pom.xml
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<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>

<groupId>com.amazonaws</groupId>
<artifactId>aws-lambda-java-log4j2</artifactId>
<version>1.0.0</version>
<packaging>jar</packaging>

<name>AWS Lambda Java Log4j 2 Library</name>
<description>
Support for using log4j 2 with AWS Lambda.
</description>
<url>https://aws.amazon.com/lambda/</url>
<licenses>
<license>
<name>Apache License, Version 2.0</name>
<url>https://aws.amazon.com/apache2.0</url>
<distribution>repo</distribution>
</license>
</licenses>
<scm>
<url>https://github.com/aws/aws-lambda-java-libs.git</url>
</scm>
<developers>
<developer>
<name>AWS Lambda team</name>
<organization>Amazon Web Services</organization>
<organizationUrl>https://aws.amazon.com/</organizationUrl>
</developer>
</developers>
<dependencies>
<dependency>
<groupId>com.amazonaws</groupId>
<artifactId>aws-lambda-java-core</artifactId>
<version>1.1.0</version>
</dependency>
<dependency>
<groupId>org.apache.logging.log4j</groupId>
<artifactId>log4j-core</artifactId>
<version>2.5</version>
</dependency>
</dependencies>
<distributionManagement>
<repository>
<id>sonatype-nexus-staging</id>
<url>https://oss.sonatype.org/service/local/staging/deploy/maven2/</url>
</repository>
</distributionManagement>

<profiles>
<profile>
<id>dev</id>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-javadoc-plugin</artifactId>
<version>2.9.1</version>
<configuration>
<additionalparam>-Xdoclint:none</additionalparam>
</configuration>
<executions>
<execution>
<id>attach-javadocs</id>
<goals>
<goal>jar</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
</profile>
<profile>
<id>release</id>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-source-plugin</artifactId>
<version>2.2.1</version>
<executions>
<execution>
<id>attach-sources</id>
<goals>
<goal>jar-no-fork</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-javadoc-plugin</artifactId>
<version>2.9.1</version>
<configuration>
<additionalparam>-Xdoclint:none</additionalparam>
</configuration>
<executions>
<execution>
<id>attach-javadocs</id>
<goals>
<goal>jar</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-gpg-plugin</artifactId>
<version>1.5</version>
<executions>
<execution>
<id>sign-artifacts</id>
<phase>verify</phase>
<goals>
<goal>sign</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.sonatype.plugins</groupId>
<artifactId>nexus-staging-maven-plugin</artifactId>
<version>1.6.3</version>
<extensions>true</extensions>
<configuration>
<serverId>sonatype-nexus-staging</serverId>
<nexusUrl>https://oss.sonatype.org/</nexusUrl>
<autoReleaseAfterClose>false</autoReleaseAfterClose>
</configuration>
</plugin>
</plugins>
</build>
</profile>
</profiles>
</project>
52 changes: 52 additions & 0 deletions ...java-log4j2/src/main/java/com/amazonaws/services/lambda/runtime/log4j/LambdaAppender.java
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package com.amazonaws.services.lambda.runtime.log4j;


import com.amazonaws.services.lambda.runtime.LambdaRuntime;
import com.amazonaws.services.lambda.runtime.LambdaLogger;
import org.apache.logging.log4j.core.Filter;
import org.apache.logging.log4j.core.Layout;
import org.apache.logging.log4j.core.LogEvent;
import org.apache.logging.log4j.core.appender.AbstractAppender;
import org.apache.logging.log4j.core.config.plugins.Plugin;
import org.apache.logging.log4j.core.config.plugins.PluginAttribute;
import org.apache.logging.log4j.core.config.plugins.PluginElement;
import org.apache.logging.log4j.core.config.plugins.PluginFactory;
import org.apache.logging.log4j.core.layout.PatternLayout;

import java.io.Serializable;

/**
* LambdaAppender is the custom log4j appender
* to be used in the log4j.properties file.
* You should not be required to use this class directly.
*/
@Plugin(name = "Lambda", category = "Core", elementType = "appender", printObject = true)
public class LambdaAppender extends AbstractAppender {

LambdaLogger logger = LambdaRuntime.getLogger();

private LambdaAppender(String name, Filter filter, Layout<? extends Serializable> layout, boolean ignoreExceptions) {
super(name, filter, layout, ignoreExceptions);
}

public void append(LogEvent event) {
logger.log(new String(getLayout().toByteArray(event)));
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@williamblevins williamblevins Mar 8, 2017

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Recommend ensuring some sort of reasonable encoding here: UTF-8?

}

@PluginFactory
public static LambdaAppender createAppender(@PluginAttribute("name") String name,
@PluginAttribute("ignoreExceptions") boolean ignoreExceptions,
@PluginElement("Layout") Layout<? extends Serializable> layout,
@PluginElement("Filters") Filter filter) {
if (name == null) {
LOGGER.error("No name provided for LambdaAppender");
return null;
}

if (layout == null) {
layout = PatternLayout.createDefaultLayout();
}
return new LambdaAppender(name, filter, layout, ignoreExceptions);
}

}