Lambda Powertools

A suite of utilities for AWS Lambda Functions that makes tracing with AWS X-Ray, structured logging and creating custom metrics asynchronously(Coming soon!) easier.

📜Documentation | Feature request | 🐛Bug Report | Detailed blog post

Installation

Powertools is available in Maven Central. You can use your favourite dependency management tool to install it

• maven:

<dependencies>
    ...
    <dependency>
        <groupId>software.amazon.lambda</groupId>
        <artifactId>powertools-tracing</artifactId>
        <version>0.1.0-beta</version>
    </dependency>
    <dependency>
        <groupId>software.amazon.lambda</groupId>
        <artifactId>powertools-logging</artifactId>
        <version>0.1.0-beta</version>
    </dependency>
    ...
</dependencies>

And configure the aspectj-maven-plugin to compile-time weave (CTW) the aws-lambda-powertools-java aspects into your project:

<build>
    <plugins>
        ...
        <plugin>
             <groupId>org.codehaus.mojo</groupId>
             <artifactId>aspectj-maven-plugin</artifactId>
             <version>1.11</version>
             <configuration>
                 <source>1.8</source>
                 <target>1.8</target>
                 <complianceLevel>1.8</complianceLevel>
                 <aspectLibraries>
                     <aspectLibrary>
                         <groupId>software.amazon.lambda</groupId>
                         <artifactId>powertools-logging</artifactId>
                     </aspectLibrary>
                     <aspectLibrary>
                         <groupId>software.amazon.lambda</groupId>
                         <artifactId>powertools-tracing</artifactId>
                     </aspectLibrary>
                 </aspectLibraries>
             </configuration>
             <executions>
                 <execution>
                     <goals>
                         <goal>compile</goal>
                     </goals>
                 </execution>
             </executions>
        </plugin>
        ...
    </plugins>
</build>

Note: If you are working with Lambda on runtime post java8, please refer issue for workaround

Logging Configuration

Powertools extends the functionality of Log4J. Below is an example log4j2.xml file, with the LambdaJsonLayout configured.

<?xml version="1.0" encoding="UTF-8"?>
<Configuration packages="com.amazonaws.services.lambda.runtime.log4j2">
    <Appenders>
        <Console name="JsonAppender" target="SYSTEM_OUT">
            <LambdaJsonLayout compact="true" eventEol="true"/>
        </Console>
    </Appenders>
    <Loggers>
        <Logger name="JsonLogger" level="INFO" additivity="false">
            <AppenderRef ref="JsonAppender"/>
        </Logger>
        <Root level="info">
            <AppenderRef ref="JsonAppender"/>
        </Root>
    </Loggers>
</Configuration>

Credits

• Gatsby Apollo Theme for Docs

License

This library is licensed under the Apache License, Version 2.0. See the LICENSE file.