github action: Add buf-lint, fix buf (#10307)

* github action: Add buf-lint, fix buf

Signed-off-by: Julien Pivotto <roidelapluie@inuits.eu>

.github/workflows/buf-lint.yml

@@ -0,0 +1,20 @@
+name: buf.build
+on:
+  pull_request:
+    paths:
+      - ".github/workflows/buf-lint.yml"
+      - "**.proto"
+jobs:
+  buf:
+    name: lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: bufbuild/buf-setup-action@v0.6.0
+      - uses: bufbuild/buf-lint-action@v1
+        with:
+          input: 'prompb'
+      - uses: bufbuild/buf-breaking-action@v1
+        with:
+          input: 'prompb'
+          against: 'https://github.com/prometheus/prometheus.git#branch=main,ref=HEAD,subdir=prompb'

.github/workflows/buf.yml

@@ -1,9 +1,12 @@
+name: buf.build
 on:
   push:
     branches:
       - main
-
 jobs:
+  buf:
+    name: lint and publish
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
       - uses: bufbuild/buf-setup-action@v0.6.0

prompb/buf.yaml

@@ -1,4 +1,18 @@
 version: v1
 name: buf.build/prometheus/prometheus
+lint:
+  ignore_only:
+    ENUM_VALUE_PREFIX:
+      - remote.proto
+      - types.proto
+    ENUM_ZERO_VALUE_SUFFIX:
+      - remote.proto
+      - types.proto
+    PACKAGE_DIRECTORY_MATCH:
+      - remote.proto
+      - types.proto
+    PACKAGE_VERSION_SUFFIX:
+      - remote.proto
+      - types.proto
 deps:
   - buf.build/gogo/protobuf