refactor into MasterClient

weed/filer2/filer.go

@@ -11,20 +11,20 @@ import (
 	"path/filepath"
 	"strings"
 	"time"
+	"github.com/chrislusf/seaweedfs/weed/wdclient"
+	"context"
 )
 
 type Filer struct {
-	masters        []string
 	store          FilerStore
 	directoryCache *ccache.Cache
-
-	currentMaster string
+	masterClient   *wdclient.MasterClient
 }
 
 func NewFiler(masters []string) *Filer {
 	return &Filer{
-		masters:        masters,
 		directoryCache: ccache.New(ccache.Configure().MaxSize(1000).ItemsToPrune(100)),
+		masterClient:   wdclient.NewMasterClient(context.Background(), "filer", masters),
 	}
 }
 
@@ -36,6 +36,14 @@ func (f *Filer) DisableDirectoryCache() {
 	f.directoryCache = nil
 }
 
+func (fs *Filer) GetMaster() string {
+	return fs.masterClient.GetMaster()
+}
+
+func (fs *Filer) KeepConnectedToMaster() {
+	fs.masterClient.KeepConnectedToMaster()
+}
+
 func (f *Filer) CreateEntry(entry *Entry) error {
 
 	dirParts := strings.Split(string(entry.FullPath), "/")

weed/filer2/filer_master.go

@@ -1,66 +0,0 @@
-package filer2
-
-import (
-	"context"
-	"fmt"
-	"github.com/chrislusf/seaweedfs/weed/glog"
-	"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
-	"github.com/chrislusf/seaweedfs/weed/util"
-	"time"
-)
-
-func (fs *Filer) GetMaster() string {
-	return fs.currentMaster
-}
-
-func (fs *Filer) KeepConnectedToMaster() {
-	glog.V(0).Infof("Filer bootstraps with masters %v", fs.masters)
-	for {
-		fs.tryAllMasters()
-		time.Sleep(time.Second)
-	}
-}
-
-func (fs *Filer) tryAllMasters() {
-	for _, master := range fs.masters {
-		glog.V(0).Infof("Connecting to %v", master)
-		withMasterClient(master, func(client master_pb.SeaweedClient) error {
-			stream, err := client.KeepConnected(context.Background())
-			if err != nil {
-				glog.V(0).Infof("failed to keep connected to %s: %v", master, err)
-				return err
-			}
-
-			glog.V(0).Infof("Connected to %v", master)
-			fs.currentMaster = master
-
-			if err = stream.Send(&master_pb.ClientListenRequest{Name: "filer"}); err != nil {
-				glog.V(0).Infof("failed to send to %s: %v", master, err)
-				return err
-			}
-
-			for {
-				if volumeLocation, err := stream.Recv(); err != nil {
-					glog.V(0).Infof("failed to receive from %s: %v", master, err)
-					return err
-				} else {
-					glog.V(0).Infof("volume location: %+v", volumeLocation)
-				}
-			}
-		})
-		fs.currentMaster = ""
-	}
-}
-
-func withMasterClient(master string, fn func(client master_pb.SeaweedClient) error) error {
-
-	grpcConnection, err := util.GrpcDial(master)
-	if err != nil {
-		return fmt.Errorf("fail to dial %s: %v", master, err)
-	}
-	defer grpcConnection.Close()
-
-	client := master_pb.NewSeaweedClient(grpcConnection)
-
-	return fn(client)
-}