Examples with RaftException org.apache.ignite.raft.jraft.error.RaftException used on opensource projects

Example 1 with RaftException

use of org.apache.ignite.raft.jraft.error.RaftException in project ignite-3 by apache.

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(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.lastIncludedIndex(), meta.lastIncludedTerm());
    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(ErrorType.ERROR_TYPE_STATE_MACHINE, RaftError.ESTATEMACHINE, "StateMachine onSnapshotLoad failed");
        setError(e);
        return;
    }
    if (meta.oldPeersList() == null) {
        // Joint stage is not supposed to be noticeable by end users.
        final Configuration conf = new Configuration();
        if (meta.peersList() != null) {
            for (String metaPeer : meta.peersList()) {
                final PeerId peer = new PeerId();
                Requires.requireTrue(peer.parse(metaPeer), "Parse peer failed");
                conf.addPeer(peer);
            }
        }
        this.fsm.onConfigurationCommitted(conf);
    }
    this.lastAppliedIndex.set(meta.lastIncludedIndex());
    this.lastAppliedTerm = meta.lastIncludedTerm();
    done.run(Status.OK());
}

Example 2 with RaftException

use of org.apache.ignite.raft.jraft.error.RaftException in project ignite-3 by apache.

the class Replicator method installSnapshot.

void installSnapshot() {
    if (this.state == State.Snapshot) {
        LOG.warn("Replicator {} is installing snapshot, ignore the new request.", this.options.getPeerId());
        this.id.unlock();
        return;
    }
    boolean doUnlock = true;
    try {
        Requires.requireTrue(this.reader == null, "Replicator %s already has a snapshot reader, current state is %s", this.options.getPeerId(), this.state);
        this.reader = this.options.getSnapshotStorage().open();
        if (this.reader == null) {
            final NodeImpl node = this.options.getNode();
            final RaftException error = new RaftException(EnumOutter.ErrorType.ERROR_TYPE_SNAPSHOT);
            error.setStatus(new Status(RaftError.EIO, "Fail to open snapshot"));
            this.id.unlock();
            doUnlock = false;
            node.onError(error);
            return;
        }
        final String uri = this.reader.generateURIForCopy();
        if (uri == null) {
            final NodeImpl node = this.options.getNode();
            final RaftException error = new RaftException(EnumOutter.ErrorType.ERROR_TYPE_SNAPSHOT);
            error.setStatus(new Status(RaftError.EIO, "Fail to generate uri for snapshot reader"));
            releaseReader();
            this.id.unlock();
            doUnlock = false;
            node.onError(error);
            return;
        }
        final RaftOutter.SnapshotMeta meta = this.reader.load();
        if (meta == null) {
            final String snapshotPath = this.reader.getPath();
            final NodeImpl node = this.options.getNode();
            final RaftException error = new RaftException(EnumOutter.ErrorType.ERROR_TYPE_SNAPSHOT);
            error.setStatus(new Status(RaftError.EIO, "Fail to load meta from %s", snapshotPath));
            releaseReader();
            this.id.unlock();
            doUnlock = false;
            node.onError(error);
            return;
        }
        final InstallSnapshotRequest request = raftOptions.getRaftMessagesFactory().installSnapshotRequest().term(options.getTerm()).groupId(options.getGroupId()).serverId(options.getServerId().toString()).peerId(options.getPeerId().toString()).meta(meta).uri(uri).build();
        this.statInfo.runningState = RunningState.INSTALLING_SNAPSHOT;
        this.statInfo.lastLogIncluded = meta.lastIncludedIndex();
        this.statInfo.lastTermIncluded = meta.lastIncludedTerm();
        this.state = State.Snapshot;
        // noinspection NonAtomicOperationOnVolatileField
        this.installSnapshotCounter++;
        final long monotonicSendTimeMs = Utils.monotonicMs();
        final int stateVersion = this.version;
        final int seq = getAndIncrementReqSeq();
        final Future<Message> rpcFuture = this.rpcService.installSnapshot(this.options.getPeerId().getEndpoint(), request, new RpcResponseClosureAdapter<InstallSnapshotResponse>() {

            @Override
            public void run(final Status status) {
                onRpcReturned(Replicator.this.id, RequestType.Snapshot, status, request, getResponse(), seq, stateVersion, monotonicSendTimeMs);
            }
        });
        addInflight(RequestType.Snapshot, this.nextIndex, 0, 0, seq, rpcFuture);
    } finally {
        if (doUnlock) {
            this.id.unlock();
        }
    }
}

Example 3 with RaftException

use of org.apache.ignite.raft.jraft.error.RaftException in project ignite-3 by apache.

the class SnapshotExecutorImpl method reportError.

private void reportError(final int errCode, final String fmt, final Object... args) {
    final RaftException error = new RaftException(ErrorType.ERROR_TYPE_SNAPSHOT);
    error.setStatus(new Status(errCode, fmt, args));
    this.fsmCaller.onError(error);
}

Example 4 with RaftException

use of org.apache.ignite.raft.jraft.error.RaftException in project ignite-3 by apache.

the class FSMCallerImpl method init.

@Override
public boolean init(final FSMCallerOptions opts) {
    this.groupId = opts.getGroupId();
    this.logManager = opts.getLogManager();
    this.fsm = opts.getFsm();
    this.closureQueue = opts.getClosureQueue();
    this.afterShutdown = opts.getAfterShutdown();
    this.node = opts.getNode();
    this.nodeMetrics = this.node.getNodeMetrics();
    this.lastAppliedIndex.set(opts.getBootstrapId().getIndex());
    notifyLastAppliedIndexUpdated(this.lastAppliedIndex.get());
    this.lastAppliedTerm = opts.getBootstrapId().getTerm();
    disruptor = opts.getfSMCallerExecutorDisruptor();
    taskQueue = disruptor.subscribe(groupId, new ApplyTaskHandler());
    if (this.nodeMetrics.getMetricRegistry() != null) {
        this.nodeMetrics.getMetricRegistry().register("jraft-fsm-caller-disruptor", new DisruptorMetricSet(this.taskQueue));
    }
    this.error = new RaftException(ErrorType.ERROR_TYPE_NONE);
    this.msgFactory = opts.getRaftMessagesFactory();
    LOG.info("Starts FSMCaller successfully.");
    return true;
}

Example 5 with RaftException

use of org.apache.ignite.raft.jraft.error.RaftException in project ignite-3 by apache.

the class ItNodeTest method testAppendEntriesWhenFollowerIsInErrorState.

@Test
public void testAppendEntriesWhenFollowerIsInErrorState() throws Exception {
    // start five nodes
    List<PeerId> peers = TestUtils.generatePeers(5);
    cluster = new TestCluster("unitest", dataPath, peers, ELECTION_TIMEOUT_MILLIS, testInfo);
    for (PeerId peer : peers) assertTrue(cluster.start(peer.getEndpoint()));
    cluster.waitLeader();
    Node oldLeader = cluster.getLeader();
    assertNotNull(oldLeader);
    // apply something
    sendTestTaskAndWait(oldLeader);
    // set one follower into error state
    List<Node> followers = cluster.getFollowers();
    assertEquals(4, followers.size());
    Node errorNode = followers.get(0);
    PeerId errorPeer = errorNode.getNodeId().getPeerId().copy();
    Endpoint errorFollowerAddr = errorPeer.getEndpoint();
    LOG.info("Set follower {} into error state", errorNode);
    ((NodeImpl) errorNode).onError(new RaftException(EnumOutter.ErrorType.ERROR_TYPE_STATE_MACHINE, new Status(-1, "Follower has something wrong.")));
    // increase term  by stopping leader and electing a new leader again
    Endpoint oldLeaderAddr = oldLeader.getNodeId().getPeerId().getEndpoint().copy();
    assertTrue(cluster.stop(oldLeaderAddr));
    cluster.waitLeader();
    Node leader = cluster.getLeader();
    assertNotNull(leader);
    LOG.info("Elect a new leader {}", leader);
    // apply something again
    sendTestTaskAndWait(leader, 10, RaftError.SUCCESS);
    // stop error follower
    Thread.sleep(20);
    LOG.info("Stop error follower {}", errorNode);
    assertTrue(cluster.stop(errorFollowerAddr));
    // restart error and old leader
    LOG.info("Restart error follower {} and old leader {}", errorFollowerAddr, oldLeaderAddr);
    assertTrue(cluster.start(errorFollowerAddr));
    assertTrue(cluster.start(oldLeaderAddr));
    cluster.ensureSame();
    assertEquals(5, cluster.getFsms().size());
    for (MockStateMachine fsm : cluster.getFsms()) assertEquals(20, fsm.getLogs().size());
}