package pb import ( "context" "fmt" "github.com/chrislusf/seaweedfs/weed/glog" "github.com/chrislusf/seaweedfs/weed/util" "math/rand" "net/http" "strconv" "strings" "sync" "time" "google.golang.org/grpc" "google.golang.org/grpc/keepalive" "github.com/chrislusf/seaweedfs/weed/pb/filer_pb" "github.com/chrislusf/seaweedfs/weed/pb/master_pb" "github.com/chrislusf/seaweedfs/weed/pb/messaging_pb" ) const ( Max_Message_Size = 1 << 30 // 1 GB ) var ( // cache grpc connections grpcClients = make(map[string]*versionedGrpcClient) grpcClientsLock sync.Mutex ) type versionedGrpcClient struct { *grpc.ClientConn version int errCount int } func init() { http.DefaultTransport.(*http.Transport).MaxIdleConnsPerHost = 1024 http.DefaultTransport.(*http.Transport).MaxIdleConns = 1024 } func NewGrpcServer(opts ...grpc.ServerOption) *grpc.Server { var options []grpc.ServerOption options = append(options, grpc.KeepaliveParams(keepalive.ServerParameters{ Time: 10 * time.Second, // wait time before ping if no activity Timeout: 20 * time.Second, // ping timeout MaxConnectionAge: 10 * time.Hour, }), grpc.KeepaliveEnforcementPolicy(keepalive.EnforcementPolicy{ MinTime: 60 * time.Second, // min time a client should wait before sending a ping PermitWithoutStream: true, }), grpc.MaxRecvMsgSize(Max_Message_Size), grpc.MaxSendMsgSize(Max_Message_Size), ) for _, opt := range opts { if opt != nil { options = append(options, opt) } } return grpc.NewServer(options...) } func GrpcDial(ctx context.Context, address string, opts ...grpc.DialOption) (*grpc.ClientConn, error) { // opts = append(opts, grpc.WithBlock()) // opts = append(opts, grpc.WithTimeout(time.Duration(5*time.Second))) var options []grpc.DialOption options = append(options, // grpc.WithInsecure(), grpc.WithDefaultCallOptions( grpc.MaxCallSendMsgSize(Max_Message_Size), grpc.MaxCallRecvMsgSize(Max_Message_Size), ), grpc.WithKeepaliveParams(keepalive.ClientParameters{ Time: 30 * time.Second, // client ping server if no activity for this long Timeout: 20 * time.Second, PermitWithoutStream: true, })) for _, opt := range opts { if opt != nil { options = append(options, opt) } } return grpc.DialContext(ctx, address, options...) } func getOrCreateConnection(address string, opts ...grpc.DialOption) (*versionedGrpcClient, error) { grpcClientsLock.Lock() defer grpcClientsLock.Unlock() existingConnection, found := grpcClients[address] if found { return existingConnection, nil } ctx := context.Background() grpcConnection, err := GrpcDial(ctx, address, opts...) if err != nil { return nil, fmt.Errorf("fail to dial %s: %v", address, err) } vgc := &versionedGrpcClient{ grpcConnection, rand.Int(), 0, } grpcClients[address] = vgc return vgc, nil } // WithGrpcClient In streamingMode, always use a fresh connection. Otherwise, try to reuse an existing connection. func WithGrpcClient(streamingMode bool, fn func(*grpc.ClientConn) error, address string, opts ...grpc.DialOption) error { if !streamingMode { vgc, err := getOrCreateConnection(address, opts...) if err != nil { return fmt.Errorf("getOrCreateConnection %s: %v", address, err) } executionErr := fn(vgc.ClientConn) if executionErr != nil { if strings.Contains(executionErr.Error(), "transport") || strings.Contains(executionErr.Error(), "connection closed") { grpcClientsLock.Lock() if t, ok := grpcClients[address]; ok { if t.version == vgc.version { vgc.Close() delete(grpcClients, address) } } grpcClientsLock.Unlock() } } return executionErr } else { grpcConnection, err := GrpcDial(context.Background(), address, opts...) if err != nil { return fmt.Errorf("fail to dial %s: %v", address, err) } defer grpcConnection.Close() executionErr := fn(grpcConnection) if executionErr != nil { return executionErr } return nil } } func ParseServerAddress(server string, deltaPort int) (newServerAddress string, err error) { host, port, parseErr := hostAndPort(server) if parseErr != nil { return "", fmt.Errorf("server port parse error: %v", parseErr) } newPort := int(port) + deltaPort return util.JoinHostPort(host, newPort), nil } func hostAndPort(address string) (host string, port uint64, err error) { colonIndex := strings.LastIndex(address, ":") if colonIndex < 0 { return "", 0, fmt.Errorf("server should have hostname:port format: %v", address) } port, err = strconv.ParseUint(address[colonIndex+1:], 10, 64) if err != nil { return "", 0, fmt.Errorf("server port parse error: %v", err) } return address[:colonIndex], port, err } func ServerToGrpcAddress(server string) (serverGrpcAddress string) { host, port, parseErr := hostAndPort(server) if parseErr != nil { glog.Fatalf("server address %s parse error: %v", server, parseErr) } grpcPort := int(port) + 10000 return util.JoinHostPort(host, grpcPort) } func GrpcAddressToServerAddress(grpcAddress string) (serverAddress string) { host, grpcPort, parseErr := hostAndPort(grpcAddress) if parseErr != nil { glog.Fatalf("server grpc address %s parse error: %v", grpcAddress, parseErr) } port := int(grpcPort) - 10000 return util.JoinHostPort(host, port) } func WithMasterClient(streamingMode bool, master ServerAddress, grpcDialOption grpc.DialOption, fn func(client master_pb.SeaweedClient) error) error { return WithGrpcClient(streamingMode, func(grpcConnection *grpc.ClientConn) error { client := master_pb.NewSeaweedClient(grpcConnection) return fn(client) }, master.ToGrpcAddress(), grpcDialOption) } func WithOneOfGrpcMasterClients(streamingMode bool, masterGrpcAddresses []ServerAddress, grpcDialOption grpc.DialOption, fn func(client master_pb.SeaweedClient) error) (err error) { for _, masterGrpcAddress := range masterGrpcAddresses { err = WithGrpcClient(streamingMode, func(grpcConnection *grpc.ClientConn) error { client := master_pb.NewSeaweedClient(grpcConnection) return fn(client) }, masterGrpcAddress.ToGrpcAddress(), grpcDialOption) if err == nil { return nil } } return err } func WithBrokerGrpcClient(streamingMode bool, brokerGrpcAddress string, grpcDialOption grpc.DialOption, fn func(client messaging_pb.SeaweedMessagingClient) error) error { return WithGrpcClient(streamingMode, func(grpcConnection *grpc.ClientConn) error { client := messaging_pb.NewSeaweedMessagingClient(grpcConnection) return fn(client) }, brokerGrpcAddress, grpcDialOption) } func WithFilerClient(streamingMode bool, filer ServerAddress, grpcDialOption grpc.DialOption, fn func(client filer_pb.SeaweedFilerClient) error) error { return WithGrpcFilerClient(streamingMode, filer, grpcDialOption, fn) } func WithGrpcFilerClient(streamingMode bool, filerGrpcAddress ServerAddress, grpcDialOption grpc.DialOption, fn func(client filer_pb.SeaweedFilerClient) error) error { return WithGrpcClient(streamingMode, func(grpcConnection *grpc.ClientConn) error { client := filer_pb.NewSeaweedFilerClient(grpcConnection) return fn(client) }, filerGrpcAddress.ToGrpcAddress(), grpcDialOption) } func WithOneOfGrpcFilerClients(streamingMode bool, filerAddresses []ServerAddress, grpcDialOption grpc.DialOption, fn func(client filer_pb.SeaweedFilerClient) error) (err error) { for _, filerAddress := range filerAddresses { err = WithGrpcClient(streamingMode, func(grpcConnection *grpc.ClientConn) error { client := filer_pb.NewSeaweedFilerClient(grpcConnection) return fn(client) }, filerAddress.ToGrpcAddress(), grpcDialOption) if err == nil { return nil } } return err }