Exemple #1
0
// rpcCallTablet wil execute the RPC on the remote server.
func (client *GoRpcTabletManagerClient) rpcCallTablet(ctx context.Context, tablet *topo.TabletInfo, name string, args, reply interface{}) error {
	// create the RPC client, using ctx.Deadline if set, or no timeout.
	var connectTimeout time.Duration
	deadline, ok := ctx.Deadline()
	if ok {
		connectTimeout = deadline.Sub(time.Now())
		if connectTimeout < 0 {
			return fmt.Errorf("Timeout connecting to TabletManager.%v on %v", name, tablet.Alias)
		}
	}
	rpcClient, err := bsonrpc.DialHTTP("tcp", tablet.Addr(), connectTimeout, nil)
	if err != nil {
		return fmt.Errorf("RPC error for %v: %v", tablet.Alias, err.Error())
	}
	defer rpcClient.Close()

	// use the context Done() channel. Will handle context timeout.
	call := rpcClient.Go(ctx, "TabletManager."+name, args, reply, nil)
	select {
	case <-ctx.Done():
		return fmt.Errorf("Timeout waiting for TabletManager.%v to %v", name, tablet.Alias)
	case <-call.Done:
		if call.Error != nil {
			return fmt.Errorf("Remote error for %v: %v", tablet.Alias, call.Error.Error())
		} else {
			return nil
		}
	}
}
Exemple #2
0
func (client *GoRpcTabletManagerClient) Snapshot(ctx context.Context, tablet *topo.TabletInfo, sa *actionnode.SnapshotArgs, waitTime time.Duration) (<-chan *logutil.LoggerEvent, tmclient.SnapshotReplyFunc, error) {
	rpcClient, err := bsonrpc.DialHTTP("tcp", tablet.Addr(), waitTime, nil)
	if err != nil {
		return nil, nil, err
	}

	logstream := make(chan *logutil.LoggerEvent, 10)
	rpcstream := make(chan *gorpcproto.SnapshotStreamingReply, 10)
	result := &actionnode.SnapshotReply{}

	c := rpcClient.StreamGo("TabletManager.Snapshot", sa, rpcstream)
	go func() {
		for ssr := range rpcstream {
			if ssr.Log != nil {
				logstream <- ssr.Log
			}
			if ssr.Result != nil {
				*result = *ssr.Result
			}
		}
		close(logstream)
		rpcClient.Close()
	}()
	return logstream, func() (*actionnode.SnapshotReply, error) {
		return result, c.Error
	}, nil
}
Exemple #3
0
func connect() *rpcplus.Client {
	rpcClient, err := bsonrpc.DialHTTP("tcp", *server, *timeout, nil)
	if err != nil {
		log.Fatalf("Can't connect to zkocc: %v", err)
	}
	return rpcClient
}
Exemple #4
0
func goRpcMysqlctlClientFactory(network, addr string, dialTimeout time.Duration) (mysqlctlclient.MysqlctlClient, error) {
	// create the RPC client
	rpcClient, err := bsonrpc.DialHTTP(network, addr, dialTimeout, nil)
	if err != nil {
		return nil, fmt.Errorf("RPC error for %v: %v", addr, err)
	}

	return &goRpcMysqlctlClient{rpcClient}, nil
}
Exemple #5
0
func (client *GoRpcTabletManagerClient) Restore(ctx context.Context, tablet *topo.TabletInfo, sa *actionnode.RestoreArgs, waitTime time.Duration) (<-chan *logutil.LoggerEvent, tmclient.ErrFunc, error) {
	rpcClient, err := bsonrpc.DialHTTP("tcp", tablet.Addr(), waitTime, nil)
	if err != nil {
		return nil, nil, err
	}

	logstream := make(chan *logutil.LoggerEvent, 10)
	c := rpcClient.StreamGo("TabletManager.Restore", sa, logstream)
	return logstream, func() error {
		rpcClient.Close()
		return c.Error
	}, nil
}
Exemple #6
0
// From the addr (of the form server1:port1,server2:port2,server3:port3:...)
// splits it on commas, randomizes the list, and tries to connect
// to the servers, stopping at the first successful connection
func DialZkocc(addr string, connectTimeout time.Duration) (zkocc *ZkoccConn, err error) {
	servers := strings.Split(addr, ",")
	perm := rand.Perm(len(servers))
	for _, index := range perm {
		server := servers[index]

		rpcClient, err := bsonrpc.DialHTTP("tcp", server, connectTimeout, nil)
		if err == nil {
			return &ZkoccConn{rpcClient: rpcClient}, nil
		}
		log.Infof("zk conn cache: zkocc connection to %v failed: %v", server, err)
	}
	return nil, fmt.Errorf("zkocc connect failed: %v", addr)
}
Exemple #7
0
// DialTablet creates and initializes TabletBson.
func DialTablet(ctx context.Context, endPoint topo.EndPoint, keyspace, shard string, timeout time.Duration) (tabletconn.TabletConn, error) {
	var addr string
	var config *tls.Config
	if *tabletBsonEncrypted {
		port, ok := endPoint.NamedPortMap["vts"]
		if !ok {
			port = endPoint.NamedPortMap["_vts"]
		}
		addr = fmt.Sprintf("%v:%v", endPoint.Host, port)
		config = &tls.Config{}
		config.InsecureSkipVerify = true
	} else {
		port, ok := endPoint.NamedPortMap["vt"]
		if !ok {
			port = endPoint.NamedPortMap["_vtocc"]
		}
		addr = fmt.Sprintf("%v:%v", endPoint.Host, port)
	}

	conn := &TabletBson{endPoint: endPoint}
	var err error
	if *tabletBsonUsername != "" {
		conn.rpcClient, err = bsonrpc.DialAuthHTTP("tcp", addr, *tabletBsonUsername, *tabletBsonPassword, timeout, config)
	} else {
		conn.rpcClient, err = bsonrpc.DialHTTP("tcp", addr, timeout, config)
	}
	if err != nil {
		return nil, tabletError(err)
	}

	var sessionInfo tproto.SessionInfo
	if err = conn.rpcClient.Call(ctx, "SqlQuery.GetSessionId", tproto.SessionParams{Keyspace: keyspace, Shard: shard}, &sessionInfo); err != nil {
		conn.rpcClient.Close()
		return nil, tabletError(err)
	}
	conn.sessionID = sessionInfo.SessionId
	return conn, nil
}
Exemple #8
0
func (client *GoRpcBinlogPlayerClient) Dial(addr string, connTimeout time.Duration) error {
	var err error
	client.Client, err = bsonrpc.DialHTTP("tcp", addr, connTimeout, nil)
	return err
}