Question

Is it possible to request “Snapshot Logs” through AWS SDK somehow?

It’s possible to do it through AWS console:

Cross posted to Amazon forum.

Answer 1

Requesting a log snapshot is a 3 step process. First you have to do an environment information request:

elasticBeanstalk.requestEnvironmentInfo(
    new RequestEnvironmentInfoRequest()
        .withEnvironmentName(envionmentName)
        .withInfoType("tail"));

Then you have to retreive the environment information:

final List<EnvironmentInfoDescription> envInfos =
     elasticBeanstalk.retrieveEnvironmentInfo(
         new RetrieveEnvironmentInfoRequest()
             .withEnvironmentName(environmentName)
             .withInfoType("tail")).getEnvironmentInfo();

This returns a list of environment info descriptions, with the EC2 instance id and the URL to an S3 object that contains the log snapshot. You can then retreive the logs with:

    DefaultHttpClient client = new DefaultHttpClient();
    DefaultHttpRequestRetryHandler retryhandler = 
        new DefaultHttpRequestRetryHandler(3, true);
    client.setHttpRequestRetryHandler(retryhandler);

    for (EnvironmentInfoDescription environmentInfoDescription : envInfos) {
        System.out.println(environmentInfoDescription.getEc2InstanceId());
         HttpGet rq = new HttpGet(environmentInfoDescription.getMessage());
         try {                    
             HttpResponse response = client.execute(rq);
             InputStream content = response.getEntity().getContent();                    
             System.out.println(IOUtils.toString(content));
         } catch ( Exception e ) {
             System.out.println("Exception fetching " + 
                 environmentInfoDescription.getMessage());
         }
    }

I hope this helps!