feat(format): Implement the protocol definition of GraphAr format

acezen commented 2 weeks ago

Reason for this PR

After implementation and including buf to graphar format definition, it's time to merge the format develop branch in to main.

What changes are included in this PR?

implementation of protocol of GraphAr format definition, there are some place that diff from the libraries:
- the label naming to type, to distinguish with the multi-label support in the future.
- extend the metadata to the definition, to including the number of vertex/edge, the chunk number of vertex, the edge num of each vertex chunk etc. We recorded the metadata with many files before.
Use buf to generate code from protobuf.
Add related CI

Are these changes tested?

Are there any user-facing changes?

No

SemyonSinchenko commented 2 weeks ago

Why diff is so big? May you, please, make a force-push from main to the branch?

acezen commented 2 weeks ago

Why diff is so big? May you, please, make a force-push from main to the branch?

Done the rebase to main.

SemyonSinchenko commented 2 weeks ago

By the way, based on implemented GH action I can assume that we are not storing generated code in git, right? Did you see my email in a list about it? For me the question is not so clear. @acezen

acezen commented 2 weeks ago

By the way, based on implemented GH action I can assume that we are not storing generated code in git, right? Did you see my email in a list about it? For me the question is not so clear. @acezen

Yes, I see the disscussion. Currently we do not storing generated code. But if some libraries implementation prefer to storing generated code, it can be added in the future.

apache / incubator-graphar