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transport.go
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transport.go
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// Copyright 2019-present PingCAP, Inc.
//
// Licensed 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,
// See the License for the specific language governing permissions and
// limitations under the License.
package raftstore
import (
"github.com/pingcap/kvproto/pkg/eraftpb"
"github.com/pingcap/kvproto/pkg/raft_serverpb"
"github.com/pingcap/log"
"github.com/zhangjinpeng1987/raft"
"go.uber.org/zap"
)
type ServerTransport struct {
raftClient *RaftClient
router *router
snapScheduler chan<- task
}
func NewServerTransport(raftClient *RaftClient, snapScheduler chan<- task, router *router) *ServerTransport {
return &ServerTransport{
raftClient: raftClient,
router: router,
snapScheduler: snapScheduler,
}
}
func (t *ServerTransport) Send(msg *raft_serverpb.RaftMessage) error {
if msg.GetMessage().GetSnapshot() != nil {
t.SendSnapshotSock(msg)
} else {
t.raftClient.Send(msg)
}
return nil
}
func (t *ServerTransport) SendSnapshotSock(msg *raft_serverpb.RaftMessage) {
callback := func(err error) {
if err != nil {
t.ReportSnapshotStatus(msg, raft.SnapshotFailure)
} else {
t.ReportSnapshotStatus(msg, raft.SnapshotFinish)
}
}
task := task{
tp: taskTypeSnapSend,
data: sendSnapTask{
storeID: msg.GetToPeer().GetStoreId(),
msg: msg,
callback: callback,
},
}
t.snapScheduler <- task
}
func (t *ServerTransport) ReportSnapshotStatus(msg *raft_serverpb.RaftMessage, status raft.SnapshotStatus) {
regionID := msg.GetRegionId()
toPeerID := msg.GetToPeer().GetId()
toStoreID := msg.GetToPeer().GetStoreId()
log.Debug("send snapshot", zap.Uint64("to peer", toPeerID), zap.Uint64("region id", regionID), zap.Int("status", int(status)))
if err := t.router.send(regionID, NewMsg(MsgTypeSignificantMsg, &MsgSignificant{
Type: MsgSignificantTypeStatus,
ToPeerID: toPeerID,
SnapshotStatus: status,
})); err != nil {
log.Error("report snapshot to peer fails", zap.Uint64("to peer", toPeerID), zap.Uint64("to store", toStoreID), zap.Uint64("region id", regionID), zap.Error(err))
}
}
func (t *ServerTransport) ReportUnreachable(msg *raft_serverpb.RaftMessage) {
regionID := msg.GetRegionId()
toPeerID := msg.GetToPeer().GetId()
toStoreID := msg.GetToPeer().GetStoreId()
if msg.GetMessage().GetMsgType() == eraftpb.MessageType_MsgSnapshot {
t.ReportSnapshotStatus(msg, raft.SnapshotFailure)
return
}
if err := t.router.send(regionID, NewMsg(MsgTypeSignificantMsg, &MsgSignificant{
Type: MsgSignificantTypeUnreachable,
ToPeerID: toPeerID,
})); err != nil {
log.Error("report peer unreachable failed", zap.Uint64("to peer", toPeerID), zap.Uint64("to store", toStoreID), zap.Uint64("region id", regionID), zap.Error(err))
}
}
func (t *ServerTransport) Flush() {
t.raftClient.Flush()
}