mirror of
https://github.com/etcd-io/etcd.git
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9b4d52ee73
raft relies on the link layer to report the status of the sent snapshot. If the snapshot is still sending, the replication to that remote peer will be paused. If the snapshot finish sending, the replication will begin optimistically after electionTimeout. If the snapshot fails, raft will try to resend it.
96 lines
2.7 KiB
Go
96 lines
2.7 KiB
Go
// Copyright 2015 CoreOS, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package raft
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import (
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"bytes"
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"fmt"
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pb "github.com/coreos/etcd/raft/raftpb"
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)
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func (st StateType) MarshalJSON() ([]byte, error) {
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return []byte(fmt.Sprintf("%q", st.String())), nil
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}
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// uint64Slice implements sort interface
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type uint64Slice []uint64
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func (p uint64Slice) Len() int { return len(p) }
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func (p uint64Slice) Less(i, j int) bool { return p[i] < p[j] }
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func (p uint64Slice) Swap(i, j int) { p[i], p[j] = p[j], p[i] }
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func min(a, b uint64) uint64 {
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if a > b {
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return b
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}
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return a
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}
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func max(a, b uint64) uint64 {
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if a > b {
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return a
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}
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return b
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}
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func IsLocalMsg(m pb.Message) bool {
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return m.Type == pb.MsgHup || m.Type == pb.MsgBeat || m.Type == pb.MsgUnreachable || m.Type == pb.MsgSnapStatus
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}
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func IsResponseMsg(m pb.Message) bool {
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return m.Type == pb.MsgAppResp || m.Type == pb.MsgVoteResp || m.Type == pb.MsgHeartbeatResp || m.Type == pb.MsgUnreachable
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}
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// EntryFormatter can be implemented by the application to provide human-readable formatting
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// of entry data. Nil is a valid EntryFormatter and will use a default format.
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type EntryFormatter func([]byte) string
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// DescribeMessage returns a concise human-readable description of a
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// Message for debugging.
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func DescribeMessage(m pb.Message, f EntryFormatter) string {
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var buf bytes.Buffer
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fmt.Fprintf(&buf, "%d->%d %s Term:%d Log:%d/%d", m.From, m.To, m.Type, m.Term, m.LogTerm, m.Index)
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if m.Reject {
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fmt.Fprintf(&buf, " Rejected")
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}
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if m.Commit != 0 {
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fmt.Fprintf(&buf, " Commit:%d", m.Commit)
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}
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if len(m.Entries) > 0 {
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fmt.Fprintf(&buf, " Entries:[")
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for _, e := range m.Entries {
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buf.WriteString(DescribeEntry(e, f))
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}
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fmt.Fprintf(&buf, "]")
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}
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if !IsEmptySnap(m.Snapshot) {
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fmt.Fprintf(&buf, " Snapshot:%v", m.Snapshot)
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}
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return buf.String()
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}
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// DescribeEntry returns a concise human-readable description of an
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// Entry for debugging.
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func DescribeEntry(e pb.Entry, f EntryFormatter) string {
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var formatted string
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if e.Type == pb.EntryNormal && f != nil {
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formatted = f(e.Data)
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} else {
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formatted = fmt.Sprintf("%q", e.Data)
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}
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return fmt.Sprintf("%d/%d %s %s", e.Term, e.Index, e.Type, formatted)
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}
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