Fix lastTerm access
This commit is contained in:
Marto
parent
5950ed20eb
commit
5bba48662c
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@ -59,8 +59,8 @@ type
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lastNewIndex: RaftLogIndex
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RaftRpcAppendReply* = object
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commitIndex: RaftLogIndex
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term: RaftNodeTerm
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commitIndex*: RaftLogIndex
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term*: RaftNodeTerm
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case result: RaftRpcCode:
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of Accepted: accepted: RaftRpcAppendReplyAccepted
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of Rejected: rejected: RaftRpcAppendReplyRejected
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@ -331,8 +331,15 @@ func becomeCandidate*(sm: var RaftStateMachine) =
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func heartbeat(sm: var RaftStateMachine, follower: var RaftFollowerProgressTracker) =
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sm.info "heartbeat " & $follower.nextIndex
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# TODO: we should just send empty array instead adding new empty entries on each heartbeat
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sm.addEntry(Empty())
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var previousTerm = 0
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if sm.log.lastIndex > 1:
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previousTerm = sm.log.termForIndex(follower.nextIndex - 1).get()
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let request = RaftRpcAppendRequest(
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previousTerm: previousTerm,
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previousLogIndex: follower.nextIndex - 1,
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commitIndex: sm.commitIndex,
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entries: @[])
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sm.sendTo(follower.id, request)
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func tickLeader*(sm: var RaftStateMachine, now: times.DateTime) =
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sm.timeNow = now
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@ -371,13 +378,14 @@ func commit(sm: var RaftStateMachine) =
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return
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var newIndex = sm.commitIndex
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var nextIndex = sm.commitIndex + 1
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while nextIndex < sm.log.lastIndex:
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while nextIndex < sm.log.nextIndex:
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var replicationCnt = 1
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for p in sm.leader.tracker.progress:
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if p.matchIndex > newIndex:
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replicationCnt += 1
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sm.debug "replication count" & $replicationCnt
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sm.debug "replication count: " & $replicationCnt & " for log index: " & $nextIndex
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if replicationCnt >= (sm.leader.tracker.progress.len div 2 + 1):
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sm.debug "Commit index: " & $nextIndex
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sm.commitIndex = nextIndex;
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nextIndex += 1
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newIndex += 1
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@ -414,7 +422,7 @@ func appendEntryReply*(sm: var RaftStateMachine, fromId: RaftNodeId, reply: Raft
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case reply.result:
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of RaftRpcCode.Accepted:
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let lastIndex = reply.accepted.lastNewIndex
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sm.debug "Accpeted" & $fromId & " " & $lastIndex
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sm.debug "Accpeted message from" & $fromId & " last log index: " & $lastIndex
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follower.get().accepted(lastIndex)
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# TODO: add leader stepping down logic here
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if not sm.state.isLeader:
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@ -432,6 +440,7 @@ func appendEntryReply*(sm: var RaftStateMachine, fromId: RaftNodeId, reply: Raft
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func advanceCommitIdx(sm: var RaftStateMachine, leaderIdx: RaftLogIndex) =
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let newIdx = min(leaderIdx, sm.log.lastIndex)
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if newIdx > sm.commitIndex:
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sm.debug "Commit index is changed. Old:" & $sm.commitIndex & " New:" & $newIdx
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sm.commitIndex = newIdx
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# TODO: signal the output for the update
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@ -97,7 +97,7 @@ func matchTerm*(rf: RaftLog, index: RaftLogIndex, term: RaftNodeTerm): (bool, Ra
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func termForIndex*(rf: RaftLog, index: RaftLogIndex): Option[RaftNodeTerm] =
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# TODO: snapshot support
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assert rf.logEntries.len > index
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assert rf.logEntries.len > index - rf.firstIndex, $rf.logEntries.len & " " & $index & "" & $rf
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if rf.logEntries.len > 0 and index >= rf.firstIndex:
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return some(rf.logEntries[index].term)
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return some(rf.logEntries[index - rf.firstIndex].term)
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return none(RaftNodeTerm)
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@ -5,6 +5,7 @@ import ../src/raft/tracker
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import ../src/raft/state
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import std/[times, sequtils, random]
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import std/sugar
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import std/sets
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import std/json
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import std/jsonutils
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@ -32,6 +33,7 @@ type
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SignedLogEntry = object
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hash: Hash
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logIndex: RaftLogIndex
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signature: SignedShare
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BLSTestNode* = ref object
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@ -46,11 +48,23 @@ type
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BLSTestCluster* = object
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nodes*: Table[RaftnodeId, BLSTestNode]
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delayer*: MessageDelayer
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SecretShare = object
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secret: SecretKey
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id: ID
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DelayedMessage* = object
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msg: SignedRpcMessage
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executeAt: times.DateTime
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MessageDelayer* = object
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messages: seq[DelayedMessage]
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randomGenerator: Rand
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meanDelay: float
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stdDelay: float
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minDelayMs: int
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SignedShare = object
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sign: Signature
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pubkey: PublicKey
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@ -72,6 +86,26 @@ var test_ids_1 = @[
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RaftnodeId(parseUUID("a8409b39-f17b-4682-aaef-a19cc9f356fb")),
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]
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proc initDelayer(mean: float, std: float, minInMs: int, generator: Rand): MessageDelayer =
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var delayer = MessageDelayer()
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delayer.meanDelay = mean
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delayer.stdDelay = std
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delayer.minDelayMs = minInMs
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delayer.randomGenerator = generator
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return delayer
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proc getMessages(delayer: var MessageDelayer, now: times.DateTime): seq[SignedRpcMessage] =
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result = delayer.messages.filter(m => m.executeAt <= now).map(m => m.msg)
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delayer.messages = delayer.messages.filter(m => m.executeAt > now)
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return result
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proc add(delayer: var MessageDelayer, message: SignedRpcMessage, now: times.DateTime) =
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let rndDelay = delayer.randomGenerator.gauss(delayer.meanDelay, delayer.stdDelay)
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let at = now + times.initDuration(milliseconds = delayer.minDelayMs + rndDelay.int)
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delayer.messages.add(DelayedMessage(msg: message, executeAt: at))
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proc signs(shares: openArray[SignedShare]): seq[Signature] =
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shares.mapIt(it.sign)
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@ -110,6 +144,16 @@ func `$`*(de: DebugLogEntry): string =
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return "[" & $de.level & "][" & de.time.format("HH:mm:ss:fff") & "][" & (($de.nodeId)[0..7]) & "...][" & $de.state & "]: " & de.msg
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proc sign(node: BLSTestNode, msg: Message): SignedShare =
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var pk: PublicKey
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discard pk.publicFromSecret(node.keyShare.secret)
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echo "Produce signature from node: " & $node.stm.myId & " with public key: " & $pk.toHex & "over msg " & $msg.toJson
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return SignedShare(
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sign: node.keyShare.secret.sign(msg.toBytes),
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pubkey: pk,
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id: node.keyShare.id,
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)
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proc pollMessages(node: BLSTestNode): seq[SignedRpcMessage] =
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var output = node.stm.poll()
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var debugLogs = output.debugLogs
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@ -122,7 +166,9 @@ proc pollMessages(node: BLSTestNode): seq[SignedRpcMessage] =
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raftMsg: msg,
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signEntries: node.signEntries
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))
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node.signEntries = @[]
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let commitIndex = msg.appendReply.commitIndex
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# remove the signature of all entries that are already commited
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node.signEntries = node.signEntries.filter(x => x.logIndex > commitIndex)
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else:
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msgs.add(SignedRpcMessage(
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raftMsg: msg,
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@ -135,6 +181,7 @@ proc pollMessages(node: BLSTestNode): seq[SignedRpcMessage] =
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var orgMsg = commitedMsg.command.toMessage
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var shares = node.messageSignatures[orgMsg.fieldInt]
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echo "Try to recover message" & $orgMsg.toBytes
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echo "Shares: " & $shares.signs
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var recoveredSignature = recover(shares.signs, shares.ids).expect("valid shares")
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if not node.clusterPublicKey.verify(orgMsg.toBytes, recoveredSignature):
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node.us.lastCommitedMsg = orgMsg
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@ -148,20 +195,18 @@ proc pollMessages(node: BLSTestNode): seq[SignedRpcMessage] =
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echo $msg
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return msgs
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proc acceptMessage(node: BLSTestNode, msg: SignedRpcMessage, now: times.DateTime) =
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if msg.raftMsg.kind == RaftRpcMessageType.AppendReply and node.stm.state.isFollower:
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proc acceptMessage(node: var BLSTestNode, msg: SignedRpcMessage, now: times.DateTime) =
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if msg.raftMsg.kind == RaftRpcMessageType.AppendRequest and node.stm.state.isFollower:
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var pk: PublicKey
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discard pk.publicFromSecret(node.keyShare.secret)
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for entry in msg.raftMsg.appendRequest.entries:
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if entry.kind == rletEmpty:
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continue
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var orgMsg = entry.command.toMessage
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echo "Sign message" & $orgMsg.toBytes
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var share = SignedLogEntry(
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hash: orgMsg.fieldInt,
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signature: SignedShare(
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sign: node.keyShare.secret.sign(orgMsg.toBytes),
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pubkey: pk,
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id: node.keyShare.id,
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)
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logIndex: msg.raftMsg.appendRequest.previousLogIndex + 1,
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signature: node.sign(orgMsg)
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)
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node.signEntries.add(share)
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node.stm.advance(msg.raftMsg, now)
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@ -192,19 +237,21 @@ proc generateSecretShares(sk: SecretKey, k: int, n: int): seq[SecretShare] =
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let secret = genSecretShare(originPts, id)
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result.add(SecretShare(secret: secret, id: id))
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proc createBLSCluster(ids: seq[RaftnodeId], now: times.DateTime) : BLSTestCluster =
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proc createBLSCluster(ids: seq[RaftnodeId], now: times.DateTime, k: int, n: int, delayer: MessageDelayer) : BLSTestCluster =
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var sk: SecretKey
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discard sk.fromHex("1b500388741efd98239a9b3a689721a89a92e8b209aabb10fb7dc3f844976dc2")
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var pk: PublicKey
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discard pk.publicFromSecret(sk)
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var blsShares = generateSecretShares(sk, 2, 3)
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var blsShares = generateSecretShares(sk, k, n)
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var config = createConfigFromIds(ids)
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var cluster = BLSTestCluster()
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cluster.delayer = delayer
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cluster.nodes = initTable[RaftnodeId, BLSTestNode]()
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for i in 0..<config.currentSet.len:
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let id = config.currentSet[i]
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var log = initRaftLog(1)
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@ -223,6 +270,11 @@ proc advance*(tc: var BLSTestCluster, now: times.DateTime, logLevel: DebugLogLev
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node.tick(now)
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var msgs = node.pollMessages()
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for msg in msgs:
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tc.delayer.add(msg, now)
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var msgs = tc.delayer.getMessages(now)
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for msg in msgs:
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echo "eloooooooooooooooooooooooooooooooo" & $ msg
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tc.nodes[msg.raftMsg.receiver].acceptMessage(msg, now)
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func getLeader*(tc: BLSTestCluster): Option[BLSTestNode] =
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@ -239,11 +291,7 @@ proc submitMessage(tc: var BLSTestCluster, msg: Message): bool =
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var pk: PublicKey
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discard pk.publicFromSecret(leader.get.keyShare.secret)
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echo "Leader Sign message" & $msg.toBytes
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var share = SignedShare(
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sign: leader.get.keyShare.secret.sign(msg.toBytes),
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pubkey: pk,
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id: leader.get.keyShare.id,
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)
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var share = leader.get().sign(msg)
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if not leader.get.messageSignatures.hasKey(msg.fieldInt):
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leader.get.messageSignatures[msg.fieldInt] = @[]
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leader.get.messageSignatures[msg.fieldInt].add(share)
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@ -252,38 +300,45 @@ proc submitMessage(tc: var BLSTestCluster, msg: Message): bool =
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proc blsconsensusMain*() =
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suite "BLS consensus tests":
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# test "create single node cluster":
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# var timeNow = dateTime(2017, mMar, 01, 00, 00, 00, 00, utc())
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# var cluster = createBLSCluster(test_ids_1, timeNow)
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test "create single node cluster":
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var timeNow = dateTime(2017, mMar, 01, 00, 00, 00, 00, utc())
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var delayer = initDelayer(3, 3, 1, initRand(42))
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var cluster = createBLSCluster(test_ids_1, timeNow, 1, 1, delayer)
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# timeNow += 300.milliseconds
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# cluster.advance(timeNow)
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# echo cluster.getLeader().get().stm.state
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# discard cluster.submitMessage(Message(fieldInt: 1))
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# discard cluster.submitMessage(Message(fieldInt: 2))
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# for i in 0..<305:
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# timeNow += 5.milliseconds
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# cluster.advance(timeNow)
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timeNow += 300.milliseconds
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cluster.advance(timeNow)
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echo cluster.getLeader().get().stm.state
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discard cluster.submitMessage(Message(fieldInt: 1))
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discard cluster.submitMessage(Message(fieldInt: 2))
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for i in 0..<305:
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timeNow += 5.milliseconds
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cluster.advance(timeNow)
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# echo "Helloo" & $cluster.getLeader().get.us.lastCommitedMsg
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echo "Helloo" & $cluster.getLeader().get.us.lastCommitedMsg
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test "create 3 node cluster":
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var timeNow = dateTime(2017, mMar, 01, 00, 00, 00, 00, utc())
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var cluster = createBLSCluster(test_ids_3, timeNow)
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var delayer = initDelayer(3, 3, 1, initRand(42))
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var cluster = createBLSCluster(test_ids_3, timeNow, 2, 3, delayer)
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#timeNow += 300.milliseconds
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# skip time until first election
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timeNow += 200.milliseconds
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cluster.advance(timeNow)
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var added = false
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for i in 0..<305:
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var commited = false
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for i in 0..<50:
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cluster.advance(timeNow)
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if cluster.getLeader().isSome() and not added:
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discard cluster.submitMessage(Message(fieldInt: 1))
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discard cluster.submitMessage(Message(fieldInt: 42))
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added = true
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echo "Add to the entry log"
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timeNow += 5.milliseconds
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#echo $cluster.nodes
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echo "Last state" & $cluster.getLeader().get.us.lastCommitedMsg
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if cluster.getLeader().isSome():
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echo cluster.getLeader().get.us.lastCommitedMsg
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if cluster.getLeader().get.us.lastCommitedMsg.fieldInt == 42:
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commited = true
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#break
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check commited == true
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if isMainModule:
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@ -231,8 +231,11 @@ proc consensusstatemachineMain*() =
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timeNow += 500.milliseconds
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sm.tick(timeNow)
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output = sm.poll()
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echo output
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check output.logEntries.len == 0
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check output.committed.len == 0
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# When the node became a leader it will produce empty message in the log
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# and because we have single node cluster the node will commit that entry immediately
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check output.committed.len == 1
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check output.messages.len == 0
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check sm.state.isLeader
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check sm.term == 1
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@ -247,7 +250,9 @@ proc consensusstatemachineMain*() =
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sm.tick(timeNow)
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var output = sm.poll()
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check output.logEntries.len == 0
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check output.committed.len == 0
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# When the node became a leader it will produce empty message in the log
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# and because we have single node cluster the node will commit that entry immediately
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check output.committed.len == 1
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check output.messages.len == 0
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check sm.state.isLeader
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sm.addEntry(Empty())
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