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60 lines
1.5 KiB
60 lines
1.5 KiB
package filer2
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import (
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"context"
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"fmt"
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"time"
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"github.com/chrislusf/seaweedfs/weed/glog"
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"github.com/chrislusf/seaweedfs/weed/pb/master_pb"
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"github.com/chrislusf/seaweedfs/weed/util"
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)
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func (fs *Filer) GetMaster() string {
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return fs.currentMaster
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}
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func (fs *Filer) KeepConnectedToMaster() {
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glog.V(0).Infof("Filer bootstraps with masters %v", fs.masters)
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for _, master := range fs.masters {
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glog.V(0).Infof("Connecting to %v", master)
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withMasterClient(master, func(client master_pb.SeaweedClient) error {
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stream, err := client.KeepConnected(context.Background())
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if err != nil {
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glog.V(0).Infof("failed to keep connected to %s: %v", master, err)
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return err
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}
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glog.V(0).Infof("Connected to %v", master)
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fs.currentMaster = master
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for {
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time.Sleep(time.Duration(float32(10*1e3)*0.25) * time.Millisecond)
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if err = stream.Send(&master_pb.Empty{}); err != nil {
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glog.V(0).Infof("failed to send to %s: %v", master, err)
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return err
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}
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if _, err = stream.Recv(); err != nil {
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glog.V(0).Infof("failed to receive from %s: %v", master, err)
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return err
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}
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}
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})
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fs.currentMaster = ""
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}
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}
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func withMasterClient(master string, fn func(client master_pb.SeaweedClient) error) error {
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grpcConnection, err := util.GrpcDial(master)
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if err != nil {
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return fmt.Errorf("fail to dial %s: %v", master, err)
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}
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defer grpcConnection.Close()
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client := master_pb.NewSeaweedClient(grpcConnection)
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return fn(client)
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}
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