How to submit a bug report

If you received an error message, please include it and any exceptions.

We commonly need to know what platform you are on:

  • JDK/JRE version (i.e., java -version)
  • Operating system (i.e., uname -a)

How to contribute

We definitely welcome patches and contributions to Instrumentation! Here are some guidelines and information about how to do so.

Before getting started

In order to protect both you and ourselves, you will need to sign the Contributor License Agreement.

Eclipse and IntelliJ style configurations are commonly useful. For IntelliJ 14, copy the style to ~/.IdeaIC14/config/codestyles/, start IntelliJ, go to File > Settings > Code Style, and set the Scheme to GoogleStyle.

Style

We follow the Google Java Style Guide. Our build automatically will provide warnings for simple style issues.

We also follow these project-specific guidelines:

Javadoc

  • All public classes and their public and protected methods MUST have javadoc. It MUST be complete (all params documented etc.) Everything else (package-protected classes, private) MAY have javadoc, at the code writer's whim. It does not have to be complete, and reviewers are not allowed to require or disallow it.
  • There MUST be NO javadoc errors.
  • See section 7.3.1 in the guide for exceptions to the Javadoc requirement.
  • Reviewers may request documentation for any element that doesn't require Javadoc, though the style of documentation is up to the author.
  • Try to do the least amount of change when modifying existing documentation. Don't change the style unless you have a good reason.

AutoValue

  • Use AutoValue, when possible, for any new value classes. Remember to add package-private constructors to all AutoValue classes to prevent classes in other packages from extending them.

Building instrumentation-java

Run ./gradlew clean assemble check on OS X or Linux, or run gradlew.bat clean assemble check on Windows. This command performs the same checks as the continuous integration build.

Proposing changes

Create a Pull Request with your changes. The continuous integration build will run the tests and static analysis. It will also check that the pull request branch has no merge commits. When the changes are accepted, they will be merged or cherry-picked by an Instrumentation core developer.