Package uk.bot_by.aws_lambda.slf4j

Class AWSLambdaLogger

  • All Implemented Interfaces:
    Serializable, Logger
    public class AWSLambdaLogger
extends Object
implements Logger, Serializable
    An SLF4J Logger implementation for AWS Lambda.

    This is common with SLF4J Simple but supports MDC. You could put AWS request ID to MDC then it is printed out in start every log line: 

    
   @Override
   public String handleRequest(Map<String, Object> input, Context context) {
     MDC.put("AWS_REQUEST_ID", context.getAwsRequestId());
     ...
     logger.info("info message");
     ...
     return "done";
   }
    The log: 
    
 START RequestId: cc4eb5aa-66b4-42fc-b27a-138bd672b38a Version: $LATEST
 cc4eb5aa-66b4-42fc-b27a-138bd672b38a INFO uk.bot_by.bot.slf4j_demo.BotHandler - info message
 END RequestId: cc4eb5aa-66b4-42fc-b27a-138bd672b38a
    See Also:
    AWSLambdaLogger's configuration, Serialized Form