internal/cmd: add build info metric in helm/ansible operators

changelog/fragments/helm-ansible-version-metric.yaml

@@ -0,0 +1,9 @@
+entries:
+  - description: >
+      In Ansible-based operators, added the `ansible_operator_build_info`
+      metric to instrument commit and version information.
+    kind: "addition"
+  - description: >
+      In Helm-based operators, added the `helm_operator_build_info`
+      metric to instrument commit and version information.
+    kind: "addition"

internal/ansible/metrics/metrics.go

@@ -20,6 +20,8 @@ import (
 	"github.com/prometheus/client_golang/prometheus"
 	logf "sigs.k8s.io/controller-runtime/pkg/log"
 	"sigs.k8s.io/controller-runtime/pkg/metrics"
+
+	sdkVersion "github.com/operator-framework/operator-sdk/internal/version"
 )
 
 const (
@@ -50,6 +52,19 @@ var (
 )
 
 func init() {
+	buildInfoMetric := prometheus.NewGauge(
+		prometheus.GaugeOpts{
+			Subsystem: subsystem,
+			Name:      "build_info",
+			Help:      "Build information for the ansible-operator binary",
+			ConstLabels: map[string]string{
+				"commit":  sdkVersion.GitCommit,
+				"version": sdkVersion.Version,
+			},
+		},
+	)
+	buildInfoMetric.Set(1.0)
+	metrics.Registry.MustRegister(buildInfoMetric)
 	metrics.Registry.MustRegister(reconcileResults)
 	metrics.Registry.MustRegister(reconciles)
 }

internal/cmd/helm-operator/run/cmd.go

@@ -34,6 +34,7 @@ import (
 
 	"github.com/operator-framework/operator-sdk/internal/helm/controller"
 	"github.com/operator-framework/operator-sdk/internal/helm/flags"
+	_ "github.com/operator-framework/operator-sdk/internal/helm/metrics"
 	"github.com/operator-framework/operator-sdk/internal/helm/release"
 	"github.com/operator-framework/operator-sdk/internal/helm/watches"
 	"github.com/operator-framework/operator-sdk/internal/util/k8sutil"

internal/helm/metrics/metrics.go

@@ -0,0 +1,42 @@
+// Copyright 2020 The Operator-SDK Authors
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package metrics
+
+import (
+	"github.com/prometheus/client_golang/prometheus"
+	"sigs.k8s.io/controller-runtime/pkg/metrics"
+
+	sdkVersion "github.com/operator-framework/operator-sdk/internal/version"
+)
+
+const (
+	subsystem = "helm_operator"
+)
+
+func init() {
+	buildInfoMetric := prometheus.NewGauge(
+		prometheus.GaugeOpts{
+			Subsystem: subsystem,
+			Name:      "build_info",
+			Help:      "Build information for the helm-operator binary",
+			ConstLabels: map[string]string{
+				"commit":  sdkVersion.GitCommit,
+				"version": sdkVersion.Version,
+			},
+		},
+	)
+	buildInfoMetric.Set(1.0)
+	metrics.Registry.MustRegister(buildInfoMetric)
+}