Add binary sizes to stress test metrics

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

cmd/containerd-stress/main.go

@@ -23,6 +23,22 @@ import (
 
 const imageName = "docker.io/library/alpine:latest"
 
+var (
+	ct              metrics.LabeledTimer
+	errCounter      metrics.LabeledCounter
+	binarySizeGauge metrics.LabeledGauge
+)
+
+func init() {
+	ns := metrics.NewNamespace("stress", "", nil)
+	// if you want more fine grained metrics then you can drill down with the metrics in prom that
+	// containerd is outputing
+	ct = ns.NewLabeledTimer("run", "Run time of a full container during the test", "commit")
+	binarySizeGauge = ns.NewLabeledGauge("binary_size", "Binary size of compiled binaries", "name")
+	errCounter = ns.NewLabeledCounter("errors", "Errors encountered running the stress tests", "err")
+	metrics.Register(ns)
+}
+
 type run struct {
 	total    int
 	failures int
@@ -152,6 +168,7 @@ func serve(c config) error {
 			logrus.WithError(err).Error("listen and serve")
 		}
 	}()
+	checkBinarySizes()
 	return test(c)
 }
 

cmd/containerd-stress/size.go

@@ -0,0 +1,26 @@
+package main
+
+import (
+	"os"
+	"path/filepath"
+
+	"github.com/sirupsen/logrus"
+)
+
+var binaries = []string{
+	"ctr",
+	"containerd",
+	"containerd-shim",
+}
+
+// checkBinarySizes checks and reports the binary sizes for the containerd compiled binaries to prometheus
+func checkBinarySizes() {
+	for _, name := range binaries {
+		fi, err := os.Stat(filepath.Join("/usr/local/bin", name))
+		if err != nil {
+			logrus.WithError(err).Error("stat binary")
+			continue
+		}
+		binarySizeGauge.WithValues(name).Set(float64(fi.Size()))
+	}
+}

cmd/containerd-stress/worker.go

@@ -13,25 +13,10 @@ import (
 	"github.com/containerd/containerd"
 	"github.com/containerd/containerd/cio"
 	"github.com/containerd/containerd/oci"
-	metrics "github.com/docker/go-metrics"
 	specs "github.com/opencontainers/runtime-spec/specs-go"
 	"github.com/sirupsen/logrus"
 )
 
-var (
-	ct         metrics.LabeledTimer
-	errCounter metrics.LabeledCounter
-)
-
-func init() {
-	ns := metrics.NewNamespace("stress", "", nil)
-	// if you want more fine grained metrics then you can drill down with the metrics in prom that
-	// containerd is outputing
-	ct = ns.NewLabeledTimer("run", "Run time of a full container during the test", "commit")
-	errCounter = ns.NewLabeledCounter("errors", "Errors encountered running the stress tests", "err")
-	metrics.Register(ns)
-}
-
 type worker struct {
 	id       int
 	wg       *sync.WaitGroup