seaweedfs/weed/pb/grpc_client_server.go

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package pb
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import (
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"context"
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"fmt"
"google.golang.org/grpc/metadata"
"math/rand"
"net/http"
"strconv"
"strings"
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"sync"
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"time"
"github.com/seaweedfs/seaweedfs/weed/glog"
"github.com/seaweedfs/seaweedfs/weed/pb/volume_server_pb"
"github.com/seaweedfs/seaweedfs/weed/util"
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"google.golang.org/grpc"
"google.golang.org/grpc/keepalive"
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"github.com/seaweedfs/seaweedfs/weed/pb/filer_pb"
"github.com/seaweedfs/seaweedfs/weed/pb/master_pb"
"github.com/seaweedfs/seaweedfs/weed/pb/mq_pb"
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)
const (
Max_Message_Size = 1 << 30 // 1 GB
)
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var (
// cache grpc connections
grpcClients = make(map[string]*versionedGrpcClient)
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grpcClientsLock sync.Mutex
)
type versionedGrpcClient struct {
*grpc.ClientConn
version int
errCount int
}
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func init() {
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http.DefaultTransport.(*http.Transport).MaxIdleConnsPerHost = 1024
http.DefaultTransport.(*http.Transport).MaxIdleConns = 1024
}
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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),
)
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for _, opt := range opts {
if opt != nil {
options = append(options, opt)
}
}
return grpc.NewServer(options...)
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}
func GrpcDial(ctx context.Context, address string, waitForReady bool, opts ...grpc.DialOption) (*grpc.ClientConn, error) {
// opts = append(opts, grpc.WithBlock())
// opts = append(opts, grpc.WithTimeout(time.Duration(5*time.Second)))
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var options []grpc.DialOption
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options = append(options,
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// grpc.WithTransportCredentials(insecure.NewCredentials()),
grpc.WithDefaultCallOptions(
grpc.MaxCallSendMsgSize(Max_Message_Size),
grpc.MaxCallRecvMsgSize(Max_Message_Size),
grpc.WaitForReady(waitForReady),
),
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grpc.WithKeepaliveParams(keepalive.ClientParameters{
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Time: 30 * time.Second, // client ping server if no activity for this long
Timeout: 20 * time.Second,
PermitWithoutStream: true,
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}))
for _, opt := range opts {
if opt != nil {
options = append(options, opt)
}
}
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return grpc.DialContext(ctx, address, options...)
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}
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func getOrCreateConnection(address string, waitForReady bool, opts ...grpc.DialOption) (*versionedGrpcClient, error) {
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grpcClientsLock.Lock()
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defer grpcClientsLock.Unlock()
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existingConnection, found := grpcClients[address]
if found {
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return existingConnection, nil
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}
ctx := context.Background()
grpcConnection, err := GrpcDial(ctx, address, waitForReady, opts...)
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if err != nil {
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return nil, fmt.Errorf("fail to dial %s: %v", address, err)
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}
vgc := &versionedGrpcClient{
grpcConnection,
rand.Int(),
0,
}
grpcClients[address] = vgc
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return vgc, nil
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}
// WithGrpcClient In streamingMode, always use a fresh connection. Otherwise, try to reuse an existing connection.
func WithGrpcClient(streamingMode bool, signature int32, fn func(*grpc.ClientConn) error, address string, waitForReady bool, opts ...grpc.DialOption) error {
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if !streamingMode {
vgc, err := getOrCreateConnection(address, waitForReady, 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 {
ctx := context.Background()
if signature != 0 {
md := metadata.New(map[string]string{"sw-client-id": fmt.Sprintf("%d", signature)})
ctx = metadata.NewOutgoingContext(ctx, md)
}
grpcConnection, err := GrpcDial(ctx, address, waitForReady, 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
}
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}
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func ParseServerAddress(server string, deltaPort int) (newServerAddress string, err error) {
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host, port, parseErr := hostAndPort(server)
if parseErr != nil {
return "", fmt.Errorf("server port parse error: %v", parseErr)
}
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newPort := int(port) + deltaPort
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return util.JoinHostPort(host, newPort), nil
}
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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 {
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return "", 0, fmt.Errorf("server port parse error: %v", err)
}
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return address[:colonIndex], port, err
}
func ServerToGrpcAddress(server string) (serverGrpcAddress string) {
host, port, parseErr := hostAndPort(server)
if parseErr != nil {
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glog.Fatalf("server address %s parse error: %v", server, parseErr)
}
grpcPort := int(port) + 10000
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return util.JoinHostPort(host, grpcPort)
}
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func GrpcAddressToServerAddress(grpcAddress string) (serverAddress string) {
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host, grpcPort, parseErr := hostAndPort(grpcAddress)
if parseErr != nil {
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glog.Fatalf("server grpc address %s parse error: %v", grpcAddress, parseErr)
}
port := int(grpcPort) - 10000
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return util.JoinHostPort(host, port)
}
func WithMasterClient(streamingMode bool, master ServerAddress, grpcDialOption grpc.DialOption, waitForReady bool, fn func(client master_pb.SeaweedClient) error) error {
return WithGrpcClient(streamingMode, 0, func(grpcConnection *grpc.ClientConn) error {
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client := master_pb.NewSeaweedClient(grpcConnection)
return fn(client)
}, master.ToGrpcAddress(), waitForReady, grpcDialOption)
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}
func WithVolumeServerClient(streamingMode bool, volumeServer ServerAddress, grpcDialOption grpc.DialOption, fn func(client volume_server_pb.VolumeServerClient) error) error {
return WithGrpcClient(streamingMode, 0, func(grpcConnection *grpc.ClientConn) error {
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client := volume_server_pb.NewVolumeServerClient(grpcConnection)
return fn(client)
}, volumeServer.ToGrpcAddress(), false, grpcDialOption)
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}
func WithOneOfGrpcMasterClients(streamingMode bool, masterGrpcAddresses map[string]ServerAddress, grpcDialOption grpc.DialOption, fn func(client master_pb.SeaweedClient) error) (err error) {
for _, masterGrpcAddress := range masterGrpcAddresses {
err = WithGrpcClient(streamingMode, 0, func(grpcConnection *grpc.ClientConn) error {
client := master_pb.NewSeaweedClient(grpcConnection)
return fn(client)
}, masterGrpcAddress.ToGrpcAddress(), false, grpcDialOption)
if err == nil {
return nil
}
}
return err
}
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func WithBrokerGrpcClient(streamingMode bool, brokerGrpcAddress string, grpcDialOption grpc.DialOption, fn func(client mq_pb.SeaweedMessagingClient) error) error {
return WithGrpcClient(streamingMode, 0, func(grpcConnection *grpc.ClientConn) error {
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client := mq_pb.NewSeaweedMessagingClient(grpcConnection)
return fn(client)
}, brokerGrpcAddress, false, grpcDialOption)
}
func WithFilerClient(streamingMode bool, signature int32, filer ServerAddress, grpcDialOption grpc.DialOption, fn func(client filer_pb.SeaweedFilerClient) error) error {
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return WithGrpcFilerClient(streamingMode, signature, filer, grpcDialOption, fn)
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}
func WithGrpcFilerClient(streamingMode bool, signature int32, filerGrpcAddress ServerAddress, grpcDialOption grpc.DialOption, fn func(client filer_pb.SeaweedFilerClient) error) error {
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return WithGrpcClient(streamingMode, signature, func(grpcConnection *grpc.ClientConn) error {
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client := filer_pb.NewSeaweedFilerClient(grpcConnection)
return fn(client)
}, filerGrpcAddress.ToGrpcAddress(), false, grpcDialOption)
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}
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, 0, func(grpcConnection *grpc.ClientConn) error {
client := filer_pb.NewSeaweedFilerClient(grpcConnection)
return fn(client)
}, filerAddress.ToGrpcAddress(), false, grpcDialOption)
if err == nil {
return nil
}
}
return err
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}