Use MarshalVT/UnmarshalVT instead of proto.Marshal/proto.Unmarshal.

[arthurschreiber]

Description

Use the more efficient MarshalVT/UnmarshalVT functions instead of proto.Marshal/proto.Unmarshal.

The only places I didn't switch over are go/vt/servenv/grpc_codec.go (because that is used by the grpc communication for etcd-client) and go/vt/topo/decode.go (which I can switch over if anyone cares about that).

Related Issue(s)

N/A

Checklist

• "Backport to:" labels have been added if this change should be back-ported
• Tests were added or are not required
• Did the new or modified tests pass consistently locally and on the CI
• Documentation was added or is not required

Deployment Notes

[vitess-bot]

Review Checklist

Hello reviewers! 👋 Please follow this checklist when reviewing this Pull Request.

General

• Ensure that the Pull Request has a descriptive title.
• If this is a change that users need to know about, please apply the release notes (needs details) label so that merging is blocked unless the summary release notes document is included.
• If a test is added or modified, there should be a documentation on top of the test to explain what the expected behavior is what the test does.

If a new flag is being introduced:

• Is it really necessary to add this flag?
• Flag names should be clear and intuitive (as far as possible)
• Help text should be descriptive.
• Flag names should use dashes (-) as word separators rather than underscores (_).

If a workflow is added or modified:

• Each item in Jobs should be named in order to mark it as required.
• If the workflow should be required, the maintainer team should be notified.

Bug fixes

• There should be at least one unit or end-to-end test.
• The Pull Request description should include a link to an issue that describes the bug.

Non-trivial changes

• There should be some code comments as to why things are implemented the way they are.

New/Existing features

• Should be documented, either by modifying the existing documentation or creating new documentation.
• New features should have a link to a feature request issue or an RFC that documents the use cases, corner cases and test cases.

Backward compatibility

• Protobuf changes should be wire-compatible.
• Changes to _vt tables and RPCs need to be backward compatible.
• vtctl command output order should be stable and awk-able.
• RPC changes should be compatible with vitess-operator
• If a flag is removed, then it should also be removed from VTop, if used there.

[vmg]

LGTM. I don't think this is gonna fix the corruption but you're seeing in prod, @arthurschreiber, but it'll be a nice optimization.

[arthurschreiber]

LGTM. I don't think this is gonna fix the corruption but you're seeing in prod, @arthurschreiber, but it'll be a nice optimization.

I don't believe that either. But the generated code is much easier to read through and understand compared to the default protobuf implementation, so to me it seems like a win overall. 😄