Add ci job for validating stable metrics

Add ci job for validating stable metrics

.github/workflows/ci.yml

@@ -207,3 +207,24 @@ jobs:
     - name: End-to-end tests
       run: |
         make e2e
+
+  ci-validate-stable-metrics-tests:
+    name: ci-validate-stable-metrics
+    runs-on: ubuntu-latest
+    steps:
+    - name: Check out code into the Go module directory
+      uses: actions/checkout@v4
+
+    - name: Set up Go 1.x
+      uses: actions/setup-go@v5
+      with:
+        go-version: ${{ env.GO_VERSION }}
+      id: go
+
+    - name: Setup environment
+      run: |
+        make install-tools
+
+    - name: End-to-end tests
+      run: |
+        make validate-stable-metrics

Makefile

@@ -129,6 +129,9 @@ clean:
 e2e:
 	./tests/e2e.sh
 
+validate-stable-metrics:
+	./tests/validate-stability.sh
+
 generate: build-local
 	@echo ">> generating docs"
 	@./scripts/generate-help-text.sh

tests/stablemetrics/testdata/test-stable-metrics-list.yaml

@@ -0,0 +1,6 @@
+- name: kube_pod_init_container_status_restarts_total
+  help: The number of restarts for the init container.
+  type: Counter
+  stabilityLevel: STABLE
+  labels:
+  - container2

tests/validate-stability.sh

@@ -0,0 +1,20 @@
+#!/usr/bin/env bash
+
+set -o errexit
+
+temp_file=$(mktemp)
+metric_file='internal/store/pod.go'
+
+go run \
+		"tests/stablemetrics/main.go" \
+		"tests/stablemetrics/decode_metric.go" \
+		"tests/stablemetrics/find_stable_metric.go" \
+		"tests/stablemetrics/error.go" \
+		"tests/stablemetrics/metric.go" \
+		-- \
+		"${metric_file}" >"${temp_file}"
+
+
+if diff -u "tests/stablemetrics/testdata/test-stable-metrics-list.yaml" "$temp_file"; then
+	echo -e "PASS metrics stability verification"
+fi