update: generate protobufs with tags field support and fix makefile

[jasondellaluce]

What type of PR is this?

/kind bug

/kind feature

Any specific area of the project related to this PR?

/area api

/area makefile

What this PR does / why we need it:
This PR contributes with the following:

• Updates the generated protobufs and grpc stubs following the changes of new(outputs): expose rule tags and event source in gRPC and json outputs falco#1714, that adds support to tags in the outputs services.
• Updates the version of the modules in go.mod.
• Fixes a building issue caused by our current Makefile.

Which issue(s) this PR fixes:
Fixes #54

Does this PR introduce a user-facing change?:

update: generate protobufs with tags field support and fix makefile

[poiana]

@jasondellaluce: The label(s) area/makefile cannot be applied, because the repository doesn't have them.

In response to this:

What type of PR is this?

/kind bug

/kind feature

Any specific area of the project related to this PR?

/area api

/area makefile

What this PR does / why we need it:
This PR contributes with the following:

• Updates the generated protobufs and grpc stubs following the changes of new(outputs): expose rule tags and event source in gRPC and json outputs falco#1714, that adds support to tags in the outputs services.
• Updates the version of the modules in go.mod.
• Fixes a building issue caused by our current Makefile.

Which issue(s) this PR fixes:
Fixes #54

Does this PR introduce a user-facing change?:

update: generate protobufs with tags field support and fix makefile

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[poiana]

Welcome @jasondellaluce! It looks like this is your first PR to falcosecurity/client-go 🎉

[leodido]

PR changes look good to me.

The only thing I'm not getting is why the file names are different now.

Can we keep the file names of the generated *.pb.go the same as before?
Ie., pkg/api/outputs/outputs.pb.go rather than the new pkg/api/outputs/output_grpc.pb.go

[jasondellaluce]

Thank you for your review!

This is caused by the changes at: https://github.com/falcosecurity/client-go/pull/55/files#diff-76ed074a9305c04054cdebb9e9aad2d818052b07091de1f20cad0bbac34ffb52R35

From my understanding, it seems like the "new way" is to generate two separate files, one containing the gRPC service definitions (_grpc.pb.go) and one containing the protobuf message information (.pb.go). This is due to the fact the two files are now generated by two distinct tools, protoc-gen-go-grpc and protoc-gen-go respectively. This is documented in this release note: https://github.com/protocolbuffers/protobuf-go/releases/tag/v1.20.0#v1.20-grpc-support

gRPC support
The v1.20 protoc-gen-go does not support generating gRPC service definitions. In the future, gRPC service generation will be supported by a new protoc-gen-go-grpc plugin provided by the Go gRPC project.
The github.com/golang/protobuf version of protoc-gen-go continues to support gRPC and will continue to do so for the foreseeable future.

This topic is also related to the error of #54, which currently breaks our make setup in newer versions of protoc.

--go_out: protoc-gen-go: plugins are not supported; use 'protoc --go-grpc_out=...' to generate gRPC

[leodido]

Oh, I see. They split the services out. Gotcha!

/lgtm

[poiana]

LGTM label has been added.

Git tree hash: 8b1042c0f87c65ddfe847157d3023ed5329f7d13

[poiana]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jasondellaluce, leodido

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