[Issue #417] gRPC design doc and protobuf models

[jinrongluo]

Fixes ISSUE #417.

Motivation

• use gRPC protocol to support polyglot eventmesh client SDK

Modifications

• gRPC protocol design doc
• gRPC protobuf model
• gRPC protobuf code generation

Documentation

• Does this pull request introduce a new feature? yes
• If yes, how is the feature documented? yes

[vongosling]

You could refer here to exclude the grpc auto-created files from ck. https://docs.gradle.org/current/userguide/checkstyle_plugin.html#sec:checkstyle_tasks

[vongosling]

What went wrong:
Deprecated Gradle features were used in this build, making it incompatible with Gradle 8.0.
Execution failed for task ':checkLicense'.
Use '--warning-mode all' to show the individual deprecation warnings.

@qqeasonchen I think we have some improvement when resorting to GitHub's building checks.

[qqeasonchen]

@jinrongluo if grpc implementation is a plugin, there may need a api for grpc/http/tcp etc.

[qqeasonchen]

What went wrong: Deprecated Gradle features were used in this build, making it incompatible with Gradle 8.0. Execution failed for task ':checkLicense'. Use '--warning-mode all' to show the individual deprecation warnings.

@qqeasonchen I think we have some improvement when resorting to GitHub's building checks.

@keranbingaa can you help to fix it?

[vongosling]

What went wrong: Deprecated Gradle features were used in this build, making it incompatible with Gradle 8.0. Execution failed for task ':checkLicense'. Use '--warning-mode all' to show the individual deprecation warnings.
@qqeasonchen I think we have some improvement when resorting to GitHub's building checks.

@keranbingaa can you help to fix it?

https://docs.gradle.org/7.3/userguide/compatibility.html

[keranbingaa]

@vongosling @qqeasonchen ok，I will try to fix it

[vongosling]

@jinrongluo We could move code to grpc branch temporarily, review after merge @qqeasonchen But first now, we should resolve 2 failure checks.

[xwm1992]

this is the reason for CI/CD check failed, please excute gradlew checkLicense task, check the licenses in the ..\incubator-eventmesh\build\reports\dependency-license\dependencies-without-allowed-license.json file, if theses licenses are allowed, please copy these texts into ..\tool\license\allowed-licenses.txt

[keranbingaa]

this is the reason for CI/CD check failed, please excute gradlew checkLicense task, check the licenses in the ..\incubator-eventmesh\build\reports\dependency-license\dependencies-without-allowed-license.json file, if theses licenses are allowed, please copy these texts into ..\tool\license\allowed-licenses.txt

@jinrongluo maybe you need do this to solve the failed check

[jinrongluo]

this is the reason for CI/CD check failed, please excute gradlew checkLicense task, check the licenses in the ..\incubator-eventmesh\build\reports\dependency-license\dependencies-without-allowed-license.json file, if theses licenses are allowed, please copy these texts into ..\tool\license\allowed-licenses.txt

@jinrongluo maybe you need do this to solve the failed check

Thanks @keranbingaa I adding the allowed licenses for grpc and protobuf.

the commit is here - 0ef7783

[qqeasonchen]

@jinrongluo if grpc implementation is a plugin, there may need a api for grpc/http/tcp etc.

@jinrongluo we may discuss this first before merge.

[qqeasonchen]

@jinrongluo if grpc implementation is a plugin, there may need a api for grpc/http/tcp etc.

@jinrongluo we may discuss this first before merge.

Glad to see the sdk-gprc implementation, runtime implementation will commit later, right?

[jinrongluo]

@jinrongluo if grpc implementation is a plugin, there may need a api for grpc/http/tcp etc.

@jinrongluo we may discuss this first before merge.

Glad to see the sdk-gprc implementation, runtime implementation will commit later, right?

Yes, @qqeasonchen this PR is about protobuff message design. the actual implementation will be coming in next PR. Thanks.

[jinrongluo]

@jinrongluo if grpc implementation is a plugin, there may need a api for grpc/http/tcp etc.

@jinrongluo we may discuss this first before merge.

I agree. in the actual grpc implementation, I will use plugins. This PR is only about design.

[qqeasonchen]

@jinrongluo if grpc implementation is a plugin, there may need a api for grpc/http/tcp etc.

@jinrongluo we may discuss this first before merge.

I agree. in the actual grpc implementation, I will use plugins. This PR is only about design.

ok, then it can be merged first.

[vongosling]

It's important to note that this is quite a difficult refactoring. you could refer quarkus codes. https://quarkus.io/guides/grpc-getting-started.

I'd like to help to opt code for this feature, looking forwards to your code :-)