filer: adds basic metrics pushing to Prometheus gateway

weed/command/filer.go

@@ -34,6 +34,8 @@ type FilerOptions struct {
 	dataCenter              *string
 	enableNotification      *bool
 	disableHttp             *bool
+	metricsAddress          *string
+	metricsIntervalSec      *int
 
 	// default leveldb directory, used in "weed server" mode
 	defaultLevelDbDirectory *string
@@ -53,6 +55,8 @@ func init() {
 	f.dirListingLimit = cmdFiler.Flag.Int("dirListLimit", 100000, "limit sub dir listing size")
 	f.dataCenter = cmdFiler.Flag.String("dataCenter", "", "prefer to write to volumes in this data center")
 	f.disableHttp = cmdFiler.Flag.Bool("disableHttp", false, "disable http request, only gRpc operations are allowed")
+	f.metricsAddress = cmdFiler.Flag.String("metrics.address", "", "Prometheus gateway address")
+	f.metricsIntervalSec = cmdFiler.Flag.Int("metrics.intervalSeconds", 15, "Prometheus push interval in seconds")
 }
 
 var cmdFiler = &Command{
@@ -110,6 +114,8 @@ func (fo *FilerOptions) startFiler() {
 		DataCenter:         *fo.dataCenter,
 		DefaultLevelDbDir:  defaultLevelDbDirectory,
 		DisableHttp:        *fo.disableHttp,
+		MetricsAddress:     *fo.metricsAddress,
+		MetricsIntervalSec: *fo.metricsIntervalSec,
 	})
 	if nfs_err != nil {
 		glog.Fatalf("Filer startup error: %v", nfs_err)

weed/command/server.go

@@ -24,8 +24,10 @@ import (
 )
 
 type ServerOptions struct {
-	cpuprofile *string
-	v          VolumeServerOptions
+	cpuprofile         *string
+	metricsAddress     *string
+	metricsIntervalSec *int
+	v                  VolumeServerOptions
 }
 
 var (
@@ -81,6 +83,8 @@ var (
 
 func init() {
 	serverOptions.cpuprofile = cmdServer.Flag.String("cpuprofile", "", "cpu profile output file")
+	serverOptions.metricsAddress = cmdServer.Flag.String("metrics.address", "", "Prometheus gateway address")
+	serverOptions.metricsIntervalSec = cmdServer.Flag.Int("metrics.intervalSeconds", 15, "Prometheus push interval in seconds")
 	filerOptions.collection = cmdServer.Flag.String("filer.collection", "", "all data will be stored in this collection")
 	filerOptions.port = cmdServer.Flag.Int("filer.port", 8888, "filer server http listen port")
 	filerOptions.publicPort = cmdServer.Flag.Int("filer.port.public", 0, "filer server public http listen port")
@@ -143,6 +147,9 @@ func runServer(cmd *Command, args []string) bool {
 	filerOptions.dataCenter = serverDataCenter
 	filerOptions.disableHttp = serverDisableHttp
 
+	filerOptions.metricsAddress = serverOptions.metricsAddress
+	filerOptions.metricsIntervalSec = serverOptions.metricsIntervalSec
+
 	filerAddress := fmt.Sprintf("%s:%d", *serverIp, *filerOptions.port)
 	s3Options.filer = &filerAddress