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// Copyright 2015 The etcd Authors
//
// 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,
// 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 rafthttp
import (
"go.etcd.io/etcd/client/pkg/v3/types"
"go.etcd.io/etcd/raft/v3/raftpb"
"go.uber.org/zap"
)
type remote struct {
lg *zap.Logger
localID types.ID
id types.ID
status *peerStatus
pipeline *pipeline
}
func startRemote(tr *Transport, urls types.URLs, id types.ID) *remote {
picker := newURLPicker(urls)
status := newPeerStatus(tr.Logger, tr.ID, id)
pipeline := &pipeline{
peerID: id,
tr: tr,
picker: picker,
status: status,
raft: tr.Raft,
errorc: tr.ErrorC,
}
pipeline.start()
return &remote{
lg: tr.Logger,
localID: tr.ID,
id: id,
status: status,
pipeline: pipeline,
}
}
func (g *remote) send(m raftpb.Message) {
select {
case g.pipeline.msgc <- m:
default:
if g.status.isActive() {
if g.lg != nil {
g.lg.Warn(
"dropped internal Raft message since sending buffer is full (overloaded network)",
zap.String("message-type", m.Type.String()),
zap.String("local-member-id", g.localID.String()),
zap.String("from", types.ID(m.From).String()),
zap.String("remote-peer-id", g.id.String()),
zap.Bool("remote-peer-active", g.status.isActive()),
)
}
} else {
if g.lg != nil {
g.lg.Warn(
"dropped Raft message since sending buffer is full (overloaded network)",
zap.String("message-type", m.Type.String()),
zap.String("local-member-id", g.localID.String()),
zap.String("from", types.ID(m.From).String()),
zap.String("remote-peer-id", g.id.String()),
zap.Bool("remote-peer-active", g.status.isActive()),
)
}
}
sentFailures.WithLabelValues(types.ID(m.To).String()).Inc()
}
}
func (g *remote) stop() {
g.pipeline.stop()
}
func (g *remote) Pause() {
g.stop()
}
func (g *remote) Resume() {
g.pipeline.start()
}
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