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transport_manager.go
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transport_manager.go
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// Licensed to LinDB under one or more contributor
// license agreements. See the NOTICE file distributed with
// this work for additional information regarding copyright
// ownership. LinDB licenses this file to you under
// the Apache License, Version 2.0 (the "License"); you may
// not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the License for the
// specific language governing permissions and limitations
// under the License.
package query
import (
"fmt"
"github.com/lindb/lindb/internal/linmetric"
"github.com/lindb/lindb/metrics"
"github.com/lindb/lindb/pkg/logger"
protoCommonV1 "github.com/lindb/lindb/proto/gen/v1/common"
"github.com/lindb/lindb/rpc"
)
// transportManager implments rpc.TransportManager interface.
type transportManager struct {
taskClientFactory rpc.TaskClientFactory
taskServerFactory rpc.TaskServerFactory
statistics *metrics.TransportStatistics
logger *logger.Logger
}
// NewTransportManager creates a rpc transport manager instance.
func NewTransportManager(
taskClientFactory rpc.TaskClientFactory,
taskServerFactory rpc.TaskServerFactory,
registry *linmetric.Registry,
) rpc.TransportManager {
return &transportManager{
taskClientFactory: taskClientFactory,
taskServerFactory: taskServerFactory,
statistics: metrics.NewTransportStatistics(registry),
logger: logger.GetLogger("Query", "TransportManager"),
}
}
// SendRequest sends the task request to target node.
func (mgr *transportManager) SendRequest(targetNodeID string, req *protoCommonV1.TaskRequest) error {
mgr.logger.Debug("send query task", logger.String("target", targetNodeID))
client := mgr.taskClientFactory.GetTaskClient(targetNodeID)
if client == nil {
mgr.statistics.SentRequestFailures.Incr()
return fmt.Errorf("SendRequest: %w, targetNodeID: %s", ErrNoSendStream, targetNodeID)
}
if err := client.Send(req); err != nil {
mgr.statistics.SentRequestFailures.Incr()
return fmt.Errorf("SendRequest: %w, targetNodeID: %s", ErrTaskSend, targetNodeID)
}
mgr.statistics.SentRequest.Incr()
return nil
}
// SendResponse sends the task response to target node.
func (mgr *transportManager) SendResponse(targetNodeID string, resp *protoCommonV1.TaskResponse) error {
stream := mgr.taskServerFactory.GetStream(targetNodeID)
if stream == nil {
mgr.statistics.SentResponseFailures.Incr()
return fmt.Errorf("SendResponse: %w, parentNodeID: %s", ErrNoSendStream, targetNodeID)
}
if err := stream.Send(resp); err != nil {
mgr.statistics.SentResponseFailures.Incr()
return fmt.Errorf("SendResponse: %w, parentNodeID: %s", ErrResponseSend, targetNodeID)
}
mgr.statistics.SentResponses.Incr()
return nil
}