Use buf-action in CI (#115)

This updates CI to use the new `buf-action` replacing `buf-setup`,
`buf-lint`, `buf-breaking` and `buf-push` unifying these tasks as one.
The new behaviour is as follows:
- On pull requests: run build, lint, format and breaking change
detection checks.
- On push: build and then push the changes of the latest commit with the
label of the current branch (e.g. main).
- On delete: archive the label associated with the delete (e.g. the
branch name of the PR).

Change in behaviour:
- Buf version has been set to `1.32.2`, the current latest release.
- Checks no longer block pushes of commits to the BSR.
- Formatting checks have been added to `buf-ci.yaml`.
- Go version has been bumped to the latest minor release, for
maintenance reasons only.
- Use the setup-go cache for better caching of build artifacts.

.github/workflows/buf-ci.yaml

@@ -0,0 +1,18 @@
+name: Buf CI
+on:
+ push:
+ pull_request:
+ types: [opened, synchronize, reopened, labeled, unlabeled]
+ delete:
+permissions:
+ contents: read
+ pull-requests: write
+jobs:
+ buf:
+ runs-on: ubuntu-latest
+ steps:
+ - uses: actions/checkout@v4
+ - uses: bufbuild/buf-action@v0.1
+ with:
+ token: ${{ secrets.BUF_TOKEN }}
+ version: 1.32.2

.github/workflows/ci.yaml

@@ -12,13 +12,8 @@ jobs:
  - name: install
  uses: actions/setup-go@v5
  with:
- go-version: 1.21.x
- - name: cache
- uses: actions/cache@v4
- with:
- path: ~/go/pkg/mod
- key: ${{ runner.os }}-registry-proto-ci-${{ hashFiles('**/Makefile') }}
- restore-keys: ${{ runner.os }}-registry-proto-ci-
+ go-version: 1.22.x
+ cache-dependency-path: Makefile
  - name: make
  run: make
  - name: make checkgenerate

Makefile

@@ -10,7 +10,7 @@ BIN := .tmp/bin
 export PATH := $(BIN):$(PATH)
 export GOBIN := $(abspath $(BIN))
 
-BUF_VERSION := v1.32.0-beta.1
+BUF_VERSION := 1.32.2
 COPYRIGHT_YEARS := 2023-2024
 
 .PHONY: help
@@ -56,8 +56,8 @@ checkgenerate:
 
 $(BIN)/buf: Makefile
  @mkdir -p $(@D)
- go install github.com/bufbuild/buf/cmd/buf@$(BUF_VERSION)
+ go install github.com/bufbuild/buf/cmd/buf@v$(BUF_VERSION)
 
 $(BIN)/license-header: Makefile
  @mkdir -p $(@D)
- go install github.com/bufbuild/buf/private/pkg/licenseheader/cmd/license-header@$(BUF_VERSION)
+ go install github.com/bufbuild/buf/private/pkg/licenseheader/cmd/license-header@v$(BUF_VERSION)