Merge pull request #5965 from crosbymichael/ctd-metric

Add metric exposing build version&revision

cmd/containerd/command/main.go

@@ -30,6 +30,7 @@ import (
 	"github.com/containerd/containerd/defaults"
 	"github.com/containerd/containerd/errdefs"
 	"github.com/containerd/containerd/log"
+	_ "github.com/containerd/containerd/metrics" // import containerd build info
 	"github.com/containerd/containerd/mount"
 	"github.com/containerd/containerd/services/server"
 	srvconfig "github.com/containerd/containerd/services/server/config"

metrics/metrics.go

@@ -0,0 +1,29 @@
+/*
+   Copyright The containerd 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/containerd/containerd/version"
+	goMetrics "github.com/docker/go-metrics"
+)
+
+func init() {
+	ns := goMetrics.NewNamespace("containerd", "", nil)
+	c := ns.NewLabeledCounter("build_info", "containerd build information", "version", "revision")
+	c.WithValues(version.Version, version.Revision).Inc()
+	goMetrics.Register(ns)
+}