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raft cluster

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wip: raft does not care about migrating

wip: optimize code

wip: raft election

wip

wip: fix raft leader missing log entries

wip

fix a dead lock

batch set slot route

wip: raft persist

wip

refactor cluster suite

remove relay

rename relay2

refactor: allow customizing client factory

test raft

refactor re-balance

avoid errors caused by inconsistent status on follower nodes during raft commits

test raft election
This commit is contained in:
finley
2023-01-02 21:27:06 +08:00
parent df672d4c92
commit bf7f628810
54 changed files with 3122 additions and 703 deletions
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26
cluster/multi.go
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@@ -4,12 +4,13 @@ import (
"github.com/hdt3213/godis/database"
"github.com/hdt3213/godis/interface/redis"
"github.com/hdt3213/godis/lib/utils"
"github.com/hdt3213/godis/redis/connection"
"github.com/hdt3213/godis/redis/protocol"
"strconv"
)
const relayMulti = "_multi"
const innerWatch = "_watch"
const relayMulti = "multi_"
const innerWatch = "watch_"
var relayMultiBytes = []byte(relayMulti)
@@ -50,6 +51,11 @@ func execMulti(cluster *Cluster, conn redis.Connection, cmdLine CmdLine) redis.R
// out parser not support protocol.MultiRawReply, so we have to encode it
if peer == cluster.self {
for _, key := range keys {
if errReply := cluster.ensureKey(key); errReply != nil {
return errReply
}
}
return cluster.db.ExecMulti(conn, watching, cmdLines)
}
return execMultiOnOtherNode(cluster, conn, peer, watching, cmdLines)
@@ -72,12 +78,7 @@ func execMultiOnOtherNode(cluster *Cluster, conn redis.Connection, peer string,
relayCmdLine = append(relayCmdLine, encodeCmdLine([]CmdLine{watchingCmdLine})...)
relayCmdLine = append(relayCmdLine, encodeCmdLine(cmdLines)...)
var rawRelayResult redis.Reply
if peer == cluster.self {
// this branch just for testing
rawRelayResult = execRelayedMulti(cluster, conn, relayCmdLine)
} else {
rawRelayResult = cluster.relay(peer, conn, relayCmdLine)
}
rawRelayResult = cluster.relay(peer, connection.NewFakeConn(), relayCmdLine)
if protocol.IsErrorReply(rawRelayResult) {
return rawRelayResult
}
@@ -116,7 +117,7 @@ func execRelayedMulti(cluster *Cluster, conn redis.Connection, cmdLine CmdLine)
txCmdLines = append(txCmdLines, mbr.Args)
}
watching := make(map[string]uint32)
watchCmdLine := txCmdLines[0] // format: _watch key1 ver1 key2 ver2...
watchCmdLine := txCmdLines[0] // format: watch_ key1 ver1 key2 ver2...
for i := 2; i < len(watchCmdLine); i += 2 {
key := string(watchCmdLine[i-1])
verStr := string(watchCmdLine[i])
@@ -146,8 +147,11 @@ func execWatch(cluster *Cluster, conn redis.Connection, args [][]byte) redis.Rep
watching := conn.GetWatching()
for _, bkey := range args {
key := string(bkey)
peer := cluster.peerPicker.PickNode(key)
result := cluster.relay(peer, conn, utils.ToCmdLine("GetVer", key))
err := cluster.ensureKey(key)
if err != nil {
return err
}
result := cluster.relayByKey(key, conn, utils.ToCmdLine("GetVer", key))
if protocol.IsErrorReply(result) {
return result
}