Examples with LogStorage io.dingodb.raft.storage.LogStorage used on opensource projects

Example 1 with LogStorage

use of io.dingodb.raft.storage.LogStorage in project dingo by dingodb.

the class LogManagerImpl method init.

@Override
public boolean init(final LogManagerOptions opts) {
    this.writeLock.lock();
    try {
        if (opts.getLogStorage() == null) {
            LOG.error("Fail to init log manager, log storage is null");
            return false;
        }
        this.raftOptions = opts.getRaftOptions();
        this.nodeMetrics = opts.getNodeMetrics();
        this.logStorage = opts.getLogStorage();
        this.configManager = opts.getConfigurationManager();
        LogStorageOptions lsOpts = new LogStorageOptions();
        lsOpts.setConfigurationManager(this.configManager);
        lsOpts.setLogEntryCodecFactory(opts.getLogEntryCodecFactory());
        lsOpts.setRaftLogStorageOptions(opts.getRaftLogStorageOptions());
        if (!this.logStorage.init(lsOpts)) {
            LOG.error("Fail to init logStorage");
            return false;
        }
        this.firstLogIndex = this.logStorage.getFirstLogIndex();
        this.lastLogIndex = this.logStorage.getLastLogIndex();
        this.diskId = new LogId(this.lastLogIndex, getTermFromLogStorage(this.lastLogIndex));
        this.fsmCaller = opts.getFsmCaller();
        this.disruptor = // 
        DisruptorBuilder.<StableClosureEvent>newInstance().setEventFactory(// 
        new StableClosureEventFactory()).setRingBufferSize(// 
        opts.getDisruptorBufferSize()).setThreadFactory(// 
        new NamedThreadFactory("JRaft-LogManager-Disruptor-", true)).setProducerType(// 
        ProducerType.MULTI).setWaitStrategy(new BlockingWaitStrategy()).build();
        this.disruptor.handleEventsWith(new StableClosureEventHandler());
        this.disruptor.setDefaultExceptionHandler(new LogExceptionHandler<Object>(this.getClass().getSimpleName(), (event, ex) -> reportError(-1, "LogManager handle event error")));
        this.diskQueue = this.disruptor.start();
        if (this.nodeMetrics.getMetricRegistry() != null) {
            this.nodeMetrics.getMetricRegistry().register("jraft-log-manager-disruptor", new DisruptorMetricSet(this.diskQueue));
        }
    } finally {
        this.writeLock.unlock();
    }
    return true;
}

Example 2 with LogStorage

use of io.dingodb.raft.storage.LogStorage in project dingo by dingodb.

the class LogManagerImpl method appendEntries.

@Override
public void appendEntries(final List<LogEntry> entries, final StableClosure done) {
    Requires.requireNonNull(done, "done");
    if (this.hasError) {
        entries.clear();
        Utils.runClosureInThread(done, new Status(RaftError.EIO, "Corrupted LogStorage"));
        return;
    }
    boolean doUnlock = true;
    this.writeLock.lock();
    try {
        if (!entries.isEmpty() && !checkAndResolveConflict(entries, done)) {
            // If checkAndResolveConflict returns false, the done will be called in it.
            entries.clear();
            return;
        }
        for (int i = 0; i < entries.size(); i++) {
            final LogEntry entry = entries.get(i);
            // Set checksum after checkAndResolveConflict
            if (this.raftOptions.isEnableLogEntryChecksum()) {
                entry.setChecksum(entry.checksum());
            }
            if (entry.getType() == EntryType.ENTRY_TYPE_CONFIGURATION) {
                Configuration oldConf = new Configuration();
                if (entry.getOldPeers() != null) {
                    oldConf = new Configuration(entry.getOldPeers(), entry.getOldLearners());
                }
                final ConfigurationEntry conf = new ConfigurationEntry(entry.getId(), new Configuration(entry.getPeers(), entry.getLearners()), oldConf);
                this.configManager.add(conf);
            }
        }
        if (!entries.isEmpty()) {
            done.setFirstLogIndex(entries.get(0).getId().getIndex());
            this.logsInMemory.addAll(entries);
        }
        done.setEntries(entries);
        // 1. release the lock.
        doUnlock = false;
        if (!wakeupAllWaiter(this.writeLock)) {
            notifyLastLogIndexListeners();
        }
        // 2. Publish Event to Disruptor Queue.
        final EventTranslator<StableClosureEvent> translator = (event, sequence) -> {
            event.reset();
            event.type = EventType.OTHER;
            event.done = done;
        };
        doPublish(done, translator);
    } finally {
        if (doUnlock) {
            this.writeLock.unlock();
        }
    }
}