Examples with LogId com.alipay.sofa.jraft.entity.LogId used on opensource projects

Example 41 with LogId

use of com.alipay.sofa.jraft.entity.LogId in project sofa-jraft by sofastack.

the class NodeImpl method preVote.

// in writeLock
private void preVote() {
    long oldTerm;
    try {
        LOG.info("Node {} term {} start preVote.", getNodeId(), this.currTerm);
        if (this.snapshotExecutor != null && this.snapshotExecutor.isInstallingSnapshot()) {
            LOG.warn("Node {} term {} doesn't do preVote when installing snapshot as the configuration may be out of date.", getNodeId(), this.currTerm);
            return;
        }
        if (!this.conf.contains(this.serverId)) {
            LOG.warn("Node {} can't do preVote as it is not in conf <{}>.", getNodeId(), this.conf);
            return;
        }
        oldTerm = this.currTerm;
    } finally {
        this.writeLock.unlock();
    }
    final LogId lastLogId = this.logManager.getLastLogId(true);
    boolean doUnlock = true;
    this.writeLock.lock();
    try {
        // pre_vote need defense ABA after unlock&writeLock
        if (oldTerm != this.currTerm) {
            LOG.warn("Node {} raise term {} when get lastLogId.", getNodeId(), this.currTerm);
            return;
        }
        this.prevVoteCtx.init(this.conf.getConf(), this.conf.isStable() ? null : this.conf.getOldConf());
        for (final PeerId peer : this.conf.listPeers()) {
            if (peer.equals(this.serverId)) {
                continue;
            }
            if (!this.rpcService.connect(peer.getEndpoint())) {
                LOG.warn("Node {} channel init failed, address={}.", getNodeId(), peer.getEndpoint());
                continue;
            }
            final OnPreVoteRpcDone done = new OnPreVoteRpcDone(peer, this.currTerm);
            done.request = // 
            RequestVoteRequest.newBuilder().setPreVote(// it's a pre-vote request.
            true).setGroupId(// 
            this.groupId).setServerId(// 
            this.serverId.toString()).setPeerId(// 
            peer.toString()).setTerm(// next term
            this.currTerm + 1).setLastLogIndex(// 
            lastLogId.getIndex()).setLastLogTerm(// 
            lastLogId.getTerm()).build();
            this.rpcService.preVote(peer.getEndpoint(), done.request, done);
        }
        this.prevVoteCtx.grant(this.serverId);
        if (this.prevVoteCtx.isGranted()) {
            doUnlock = false;
            electSelf();
        }
    } finally {
        if (doUnlock) {
            this.writeLock.unlock();
        }
    }
}

Example 42 with LogId

use of com.alipay.sofa.jraft.entity.LogId in project sofa-jraft by sofastack.

the class NodeImpl method electSelf.

// should be in writeLock
private void electSelf() {
    long oldTerm;
    try {
        LOG.info("Node {} start vote and grant vote self, term={}.", getNodeId(), this.currTerm);
        if (!this.conf.contains(this.serverId)) {
            LOG.warn("Node {} can't do electSelf as it is not in {}.", getNodeId(), this.conf);
            return;
        }
        if (this.state == State.STATE_FOLLOWER) {
            LOG.debug("Node {} stop election timer, term={}.", getNodeId(), this.currTerm);
            this.electionTimer.stop();
        }
        resetLeaderId(PeerId.emptyPeer(), new Status(RaftError.ERAFTTIMEDOUT, "A follower's leader_id is reset to NULL as it begins to request_vote."));
        this.state = State.STATE_CANDIDATE;
        this.currTerm++;
        this.votedId = this.serverId.copy();
        LOG.debug("Node {} start vote timer, term={} .", getNodeId(), this.currTerm);
        this.voteTimer.start();
        this.voteCtx.init(this.conf.getConf(), this.conf.isStable() ? null : this.conf.getOldConf());
        oldTerm = this.currTerm;
    } finally {
        this.writeLock.unlock();
    }
    final LogId lastLogId = this.logManager.getLastLogId(true);
    this.writeLock.lock();
    try {
        // vote need defense ABA after unlock&writeLock
        if (oldTerm != this.currTerm) {
            LOG.warn("Node {} raise term {} when getLastLogId.", getNodeId(), this.currTerm);
            return;
        }
        for (final PeerId peer : this.conf.listPeers()) {
            if (peer.equals(this.serverId)) {
                continue;
            }
            if (!this.rpcService.connect(peer.getEndpoint())) {
                LOG.warn("Node {} channel init failed, address={}.", getNodeId(), peer.getEndpoint());
                continue;
            }
            final OnRequestVoteRpcDone done = new OnRequestVoteRpcDone(peer, this.currTerm, this);
            done.request = // 
            RequestVoteRequest.newBuilder().setPreVote(// It's not a pre-vote request.
            false).setGroupId(// 
            this.groupId).setServerId(// 
            this.serverId.toString()).setPeerId(// 
            peer.toString()).setTerm(// 
            this.currTerm).setLastLogIndex(// 
            lastLogId.getIndex()).setLastLogTerm(// 
            lastLogId.getTerm()).build();
            this.rpcService.requestVote(peer.getEndpoint(), done.request, done);
        }
        this.metaStorage.setTermAndVotedFor(this.currTerm, this.serverId);
        this.voteCtx.grant(this.serverId);
        if (this.voteCtx.isGranted()) {
            becomeLeader();
        }
    } finally {
        this.writeLock.unlock();
    }
}

Example 43 with LogId

use of com.alipay.sofa.jraft.entity.LogId in project sofa-jraft by sofastack.

the class NodeImpl method unsafeApplyConfiguration.

private void unsafeApplyConfiguration(final Configuration newConf, final Configuration oldConf, final boolean leaderStart) {
    Requires.requireTrue(this.confCtx.isBusy(), "ConfigurationContext is not busy");
    final LogEntry entry = new LogEntry(EnumOutter.EntryType.ENTRY_TYPE_CONFIGURATION);
    entry.setId(new LogId(0, this.currTerm));
    entry.setPeers(newConf.listPeers());
    entry.setLearners(newConf.listLearners());
    if (oldConf != null) {
        entry.setOldPeers(oldConf.listPeers());
        entry.setOldLearners(oldConf.listLearners());
    }
    final ConfigurationChangeDone configurationChangeDone = new ConfigurationChangeDone(this.currTerm, leaderStart);
    // Use the new_conf to deal the quorum of this very log
    if (!this.ballotBox.appendPendingTask(newConf, oldConf, configurationChangeDone)) {
        Utils.runClosureInThread(configurationChangeDone, new Status(RaftError.EINTERNAL, "Fail to append task."));
        return;
    }
    final List<LogEntry> entries = new ArrayList<>();
    entries.add(entry);
    this.logManager.appendEntries(entries, new LeaderStableClosure(entries));
    checkAndSetConfiguration(false);
}

Example 44 with LogId

use of com.alipay.sofa.jraft.entity.LogId in project sofa-jraft by sofastack.

the class FSMCallerImpl method doSnapshotLoad.

private void doSnapshotLoad(final LoadSnapshotClosure done) {
    Requires.requireNonNull(done, "LoadSnapshotClosure is null");
    final SnapshotReader reader = done.start();
    if (reader == null) {
        done.run(new Status(RaftError.EINVAL, "open SnapshotReader failed"));
        return;
    }
    final RaftOutter.SnapshotMeta meta = reader.load();
    if (meta == null) {
        done.run(new Status(RaftError.EINVAL, "SnapshotReader load meta failed"));
        if (reader.getRaftError() == RaftError.EIO) {
            final RaftException err = new RaftException(EnumOutter.ErrorType.ERROR_TYPE_SNAPSHOT, RaftError.EIO, "Fail to load snapshot meta");
            setError(err);
        }
        return;
    }
    final LogId lastAppliedId = new LogId(this.lastAppliedIndex.get(), this.lastAppliedTerm);
    final LogId snapshotId = new LogId(meta.getLastIncludedIndex(), meta.getLastIncludedTerm());
    if (lastAppliedId.compareTo(snapshotId) > 0) {
        done.run(new Status(RaftError.ESTALE, "Loading a stale snapshot last_applied_index=%d last_applied_term=%d snapshot_index=%d snapshot_term=%d", lastAppliedId.getIndex(), lastAppliedId.getTerm(), snapshotId.getIndex(), snapshotId.getTerm()));
        return;
    }
    if (!this.fsm.onSnapshotLoad(reader)) {
        done.run(new Status(-1, "StateMachine onSnapshotLoad failed"));
        final RaftException e = new RaftException(EnumOutter.ErrorType.ERROR_TYPE_STATE_MACHINE, RaftError.ESTATEMACHINE, "StateMachine onSnapshotLoad failed");
        setError(e);
        return;
    }
    if (meta.getOldPeersCount() == 0) {
        // Joint stage is not supposed to be noticeable by end users.
        final Configuration conf = new Configuration();
        for (int i = 0, size = meta.getPeersCount(); i < size; i++) {
            final PeerId peer = new PeerId();
            Requires.requireTrue(peer.parse(meta.getPeers(i)), "Parse peer failed");
            conf.addPeer(peer);
        }
        this.fsm.onConfigurationCommitted(conf);
    }
    this.lastAppliedIndex.set(meta.getLastIncludedIndex());
    this.lastAppliedTerm = meta.getLastIncludedTerm();
    done.run(Status.OK());
}