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84 lines
2.1 KiB
84 lines
2.1 KiB
package operation
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import (
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"fmt"
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"strconv"
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"strings"
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"sync"
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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/pb/volume_server_pb"
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"github.com/chrislusf/seaweedfs/weed/util"
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"google.golang.org/grpc"
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)
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var (
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grpcClients = make(map[string]*grpc.ClientConn)
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grpcClientsLock sync.Mutex
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)
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func WithVolumeServerClient(volumeServer string, fn func(volume_server_pb.VolumeServerClient) error) error {
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grpcAddress, err := toVolumeServerGrpcAddress(volumeServer)
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if err != nil {
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return err
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}
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grpcClientsLock.Lock()
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existingConnection, found := grpcClients[grpcAddress]
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if found {
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grpcClientsLock.Unlock()
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client := volume_server_pb.NewVolumeServerClient(existingConnection)
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return fn(client)
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}
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grpcConnection, err := util.GrpcDial(grpcAddress)
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if err != nil {
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grpcClientsLock.Unlock()
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return fmt.Errorf("fail to dial %s: %v", grpcAddress, err)
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}
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grpcClients[grpcAddress] = grpcConnection
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grpcClientsLock.Unlock()
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client := volume_server_pb.NewVolumeServerClient(grpcConnection)
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return fn(client)
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}
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func toVolumeServerGrpcAddress(volumeServer string) (grpcAddress string, err error) {
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sepIndex := strings.LastIndex(volumeServer, ":")
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port, err := strconv.Atoi(volumeServer[sepIndex+1:])
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if err != nil {
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glog.Errorf("failed to parse volume server address: %v", volumeServer)
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return "", err
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}
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return fmt.Sprintf("%s:%d", volumeServer[0:sepIndex], port+10000), nil
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}
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func withMasterServerClient(masterServer string, fn func(masterClient master_pb.SeaweedClient) error) error {
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grpcClientsLock.Lock()
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existingConnection, found := grpcClients[masterServer]
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if found {
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grpcClientsLock.Unlock()
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client := master_pb.NewSeaweedClient(existingConnection)
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return fn(client)
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}
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grpcConnection, err := util.GrpcDial(masterServer)
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if err != nil {
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grpcClientsLock.Unlock()
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return fmt.Errorf("fail to dial %s: %v", masterServer, err)
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}
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grpcClients[masterServer] = grpcConnection
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grpcClientsLock.Unlock()
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client := master_pb.NewSeaweedClient(grpcConnection)
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return fn(client)
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}
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