Java Tracer

Supported Runtimes: Java 8, Java 11

Building With Lumigo

Maven

Include lumigo java tracer dependency, for Maven projects, use:

<repositories>
    <repository>
        <id>lumigo</id>
        <url>https://raw.githubusercontent.com/lumigo-io/java-tracer/master/local-repository/</url>
    </repository>
</repositories>

<dependency>
  <groupId>io.lumigo</groupId>
  <artifactId>java-tracer</artifactId>
  <version>1.0.39</version>
</dependency>

<dependency>
  <groupId>io.lumigo</groupId>
  <artifactId>lumigo-agent</artifactId>
  <version>1.0.39</version>
</dependency>

Find the latest version here (the format of the version will be n.n.n):

Wrapping your Lambda

• Wrap your lambda function by implementing a supplier which contains your code

  class MyFunction implements RequestHandler<INPUT, OUTPUT> {
  
          @Override
          public OUTPUT handleRequest(INPUT event, Context context) {
              Supplier<OUTPUT> supplier = () -> {
                  //Your lambda code
                  //return <result of type OUTPUT>;
              };
              return LumigoRequestExecutor.execute(event, context, supplier);
          }
      }

• For handler return void use:

  class MyFunction implements RequestHandler<INPUT, Void> {
  
          @Override
          public Void handleRequest(INPUT event, Context context) {
              Supplier<Void> supplier = () -> {
                  //Your lambda code
                  return null;
              };
              return LumigoRequestExecutor.execute(event, context, supplier);
          }
      }

Configuration

There are 2 way to pass configuration properties

Environment variables

Adding LUMIGO_TRACER_TOKEN environment variables

Static code initiation

class MyFunction implements RequestHandler<String, String> {

        static{
            LumigoConfiguration.builder().token("xxx").build().init();
        }

        @Override
        public String handleRequest(String event, Context context) {
            Supplier<String> supplier = () -> {
                //Your lambda code
                return "";
            };
            return LumigoRequestExecutor.execute(event, context, supplier);
        }
    }

Java 11 Support

Add the environment variable JAVA_TOOL_OPTIONS to your Lambda functions and set it to -Djdk.attach.allowAttachSelf=true in addition to the manual code mentioned above.