コード例 #1
0
ファイル: proto3.go プロジェクト: ruiaylin/vitess
// SplitQueryPartsToproto transforms a SplitQueryResponse into proto
func SplitQueryPartsToProto(sqp []SplitQueryPart) *pb.SplitQueryResponse {
	result := &pb.SplitQueryResponse{}
	if len(sqp) == 0 {
		return result
	}
	result.Splits = make([]*pb.SplitQueryResponse_Part, len(sqp))
	for i, split := range sqp {
		result.Splits[i] = &pb.SplitQueryResponse_Part{
			Size: split.Size,
		}
		if split.Query != nil {
			result.Splits[i].Query = tproto.BoundQueryToProto3(split.Query.Sql, split.Query.BindVariables)
			result.Splits[i].KeyRangePart = &pb.SplitQueryResponse_KeyRangePart{
				Keyspace:  split.Query.Keyspace,
				KeyRanges: key.KeyRangesToProto(split.Query.KeyRanges),
			}
		}
		if split.QueryShard != nil {
			result.Splits[i].Query = tproto.BoundQueryToProto3(split.QueryShard.Sql, split.QueryShard.BindVariables)
			result.Splits[i].ShardPart = &pb.SplitQueryResponse_ShardPart{
				Keyspace: split.QueryShard.Keyspace,
				Shards:   split.QueryShard.Shards,
			}
		}
	}
	return result
}
コード例 #2
0
ファイル: server.go プロジェクト: richarwu/vitess
// StreamExecuteKeyRanges2 is the RPC version of
// vtgateservice.VTGateService method
func (vtg *VTGate) StreamExecuteKeyRanges2(ctx context.Context, request *proto.KeyRangeQuery, sendReply func(interface{}) error) (err error) {
	defer vtg.server.HandlePanic(&err)
	ctx = callerid.NewContext(ctx,
		callerid.GoRPCEffectiveCallerID(request.CallerID),
		callerid.NewImmediateCallerID("gorpc client"))
	vtgErr := vtg.server.StreamExecuteKeyRanges(ctx,
		request.Sql,
		request.BindVariables,
		request.Keyspace,
		key.KeyRangesToProto(request.KeyRanges),
		topo.TabletTypeToProto(request.TabletType),
		func(value *proto.QueryResult) error {
			return sendReply(value)
		})
	if vtgErr == nil {
		return nil
	}
	if *vtgate.RPCErrorOnlyInReply {
		// If there was an app error, send a QueryResult back with it.
		qr := new(proto.QueryResult)
		vtgate.AddVtGateErrorToQueryResult(vtgErr, qr)
		// Sending back errors this way is not backwards compatible. If a (new) server sends an additional
		// QueryResult with an error, and the (old) client doesn't know how to read it, it will cause
		// problems where the client will get out of sync with the number of QueryResults sent.
		// That's why this the error is only sent this way when the --rpc_errors_only_in_reply flag is set
		// (signalling that all clients are able to handle new-style errors).
		return sendReply(qr)
	}
	return vtgErr
}
コード例 #3
0
ファイル: conn.go プロジェクト: afrolovskiy/vitess
func (conn *vtgateConn) StreamExecuteKeyRanges(ctx context.Context, query string, keyspace string, keyRanges []key.KeyRange, bindVars map[string]interface{}, tabletType topo.TabletType) (<-chan *mproto.QueryResult, vtgateconn.ErrFunc, error) {
	req := &pb.StreamExecuteKeyRangesRequest{
		Query:      tproto.BoundQueryToProto3(query, bindVars),
		Keyspace:   keyspace,
		KeyRanges:  key.KeyRangesToProto(keyRanges),
		TabletType: topo.TabletTypeToProto(tabletType),
	}
	stream, err := conn.c.StreamExecuteKeyRanges(ctx, req)
	if err != nil {
		return nil, nil, err
	}
	sr := make(chan *mproto.QueryResult, 10)
	var finalError error
	go func() {
		for {
			ser, err := stream.Recv()
			if err != nil {
				if err != io.EOF {
					finalError = err
				}
				close(sr)
				return
			}
			if ser.Error != nil {
				finalError = vterrors.FromVtRPCError(ser.Error)
				close(sr)
				return
			}
			sr <- mproto.Proto3ToQueryResult(ser.Result)
		}
	}()
	return sr, func() error {
		return finalError
	}, nil
}
コード例 #4
0
ファイル: server.go プロジェクト: richarwu/vitess
// StreamExecuteKeyRanges is the RPC version of
// vtgateservice.VTGateService method
func (vtg *VTGate) StreamExecuteKeyRanges(ctx context.Context, request *proto.KeyRangeQuery, sendReply func(interface{}) error) (err error) {
	defer vtg.server.HandlePanic(&err)
	ctx = callerid.NewContext(ctx,
		callerid.GoRPCEffectiveCallerID(request.CallerID),
		callerid.NewImmediateCallerID("gorpc client"))
	return vtg.server.StreamExecuteKeyRanges(ctx,
		request.Sql,
		request.BindVariables,
		request.Keyspace,
		key.KeyRangesToProto(request.KeyRanges),
		topo.TabletTypeToProto(request.TabletType),
		func(value *proto.QueryResult) error {
			return sendReply(value)
		})
}
コード例 #5
0
ファイル: server.go プロジェクト: khanchan/vitess
// ExecuteKeyRanges is the RPC version of vtgateservice.VTGateService method
func (vtg *VTGate) ExecuteKeyRanges(ctx context.Context, request *proto.KeyRangeQuery, reply *proto.QueryResult) (err error) {
	defer vtg.server.HandlePanic(&err)
	ctx, cancel := context.WithDeadline(ctx, time.Now().Add(*rpcTimeout))
	defer cancel()
	ctx = callerid.NewContext(ctx,
		callerid.GoRPCEffectiveCallerID(request.CallerID),
		callerid.NewImmediateCallerID("gorpc client"))
	vtgErr := vtg.server.ExecuteKeyRanges(ctx,
		request.Sql,
		request.BindVariables,
		request.Keyspace,
		key.KeyRangesToProto(request.KeyRanges),
		topo.TabletTypeToProto(request.TabletType),
		request.Session,
		request.NotInTransaction,
		reply)
	vtgate.AddVtGateError(vtgErr, &reply.Err)
	return nil
}
コード例 #6
0
ファイル: conn.go プロジェクト: afrolovskiy/vitess
func (conn *vtgateConn) ExecuteKeyRanges(ctx context.Context, query string, keyspace string, keyRanges []key.KeyRange, bindVars map[string]interface{}, tabletType topo.TabletType, notInTransaction bool, session interface{}) (*mproto.QueryResult, interface{}, error) {
	var s *pb.Session
	if session != nil {
		s = session.(*pb.Session)
	}
	request := &pb.ExecuteKeyRangesRequest{
		Session:          s,
		Query:            tproto.BoundQueryToProto3(query, bindVars),
		Keyspace:         keyspace,
		KeyRanges:        key.KeyRangesToProto(keyRanges),
		TabletType:       topo.TabletTypeToProto(tabletType),
		NotInTransaction: notInTransaction,
	}
	response, err := conn.c.ExecuteKeyRanges(ctx, request)
	if err != nil {
		return nil, session, err
	}
	if response.Error != nil {
		return nil, response.Session, vterrors.FromVtRPCError(response.Error)
	}
	return mproto.Proto3ToQueryResult(response.Result), response.Session, nil
}
コード例 #7
0
ファイル: server.go プロジェクト: khanchan/vitess
// StreamExecuteKeyRanges2 is the RPC version of
// vtgateservice.VTGateService method
func (vtg *VTGate) StreamExecuteKeyRanges2(ctx context.Context, request *proto.KeyRangeQuery, sendReply func(interface{}) error) (err error) {
	defer vtg.server.HandlePanic(&err)
	ctx = callerid.NewContext(ctx,
		callerid.GoRPCEffectiveCallerID(request.CallerID),
		callerid.NewImmediateCallerID("gorpc client"))
	vtgErr := vtg.server.StreamExecuteKeyRanges(ctx,
		request.Sql,
		request.BindVariables,
		request.Keyspace,
		key.KeyRangesToProto(request.KeyRanges),
		topo.TabletTypeToProto(request.TabletType),
		func(value *proto.QueryResult) error {
			return sendReply(value)
		})
	if vtgErr == nil {
		return nil
	}
	// If there was an app error, send a QueryResult back with it.
	qr := new(proto.QueryResult)
	vtgate.AddVtGateError(vtgErr, &qr.Err)
	return sendReply(qr)
}