This was deprecated with Bazel 0.8.0, which now uses
@com_google_protobuf instead.
This change will break users that use
grpc_java_repositories(omit_com_google_protobuf_java=True), so I've
added a custom error message to make the resolution clearer.
Refactor the proto file `helloworld_streaming.proto` because Bazel and Gradle have incompatible base directory for proto imports. Bazel's proto import is relative to WORKSPACE, whereas Gradle proto plugin's is relative to `${sourceSet}/proto/`. In `helloworld_streaming.proto` file, `import helloworld.proto` does not work for Bazel. If `import src/main/proto/helloworld.proto`, that works for Bazel, but Gradle and Maven would fail. Some workarounds are very hacky, so use independent proto without imports instead to avoid this issue.
This commit aligns the naming of the Bazel Maven jars with the names
used by Bazel's migration-tooling project:
https://github.com/bazelbuild/migration-tooling
Unfortunately, we can't fix @com_google_protobuf_java because it's
required by Bazel itself.
Fixes#3328
## Bazel
If you prefer to use Bazel:
```
(With Bazel v0.4.5 or above.)
$ bazel build :hello-world-server :hello-world-client
$ # Run the server:
$ bazel-bin/hello-world-server
$ # In another terminal run the client
$ bazel-bin/hello-world-client
```
Nicholas DiPiazza
Rodrigo Queiro
ZHANG Dapeng
Paul Gross