software.amazon.awssdk.http.SdkHttpService error for modular project

[adityasrini]

Expected Behavior

The app starts and runs.

Current Behavior

A stacktrace is produced and the app crashes.

Possible Solution

The S3Client seems to be the problematic piece of code here.

Steps to Reproduce (for bugs)

• Create a modular project
• Create a jlinked image (Using the badass plugin)
• run ./build/image/bin/hello

Full code here:
https://github.com/adityasrini/modular-hello

Stacktrace here:
https://gist.github.com/adityasrini/780d73126863cbecea9fd524151f9df6

Context

This is in the context of building a modularized java application. I am using jlink to generate the modularized app through Gradle and the Badass plugin. This seems to be the only project causing this issue as can be seen in the exception that's thrown when only the S3Client is initialized with dummy credentials.

Your Environment

• AWS Java SDK version used: 2.8.1
• JDK version used: 12.0.2
• Operating System and version: macOS 10.14.6

[zoewangg]

You might need to explicitly setting the http client because by default, the SDK will try to detect the http client from the class path if it is not specified, and it might not work for module path.

S3AsyncClient.builder()
                        .region(Region.US_WEST_2)
                        .httpClientBuilder(NettyNioAsyncHttpClient.builder())
                        .credentialsProvider(CREDENTIALS_PROVIDER_CHAIN)
                        .build();

Here is the sample code to use the SDK via module path: https://github.com/aws/aws-sdk-java-v2/tree/master/test/module-path-tests

[adityasrini]

@zoewangg It worked! Documentation specifying how modular Java should be configured would be helpful.

EDIT: Closing it since it's not a bug, but ideally it would be resolved with updated docs.