Examples with EventTranslator com.lmax.disruptor.EventTranslator used on opensource projects

Example 6 with EventTranslator

use of com.lmax.disruptor.EventTranslator in project ignite-3 by apache.

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(nodeOptions.getCommonExecutor(), 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);
        int retryTimes = 0;
        final EventTranslator<StableClosureEvent> translator = (event, sequence) -> {
            event.reset();
            event.groupId = groupId;
            event.type = EventType.OTHER;
            event.done = done;
        };
        while (true) {
            if (tryOfferEvent(done, translator)) {
                break;
            } else {
                retryTimes++;
                if (retryTimes > APPEND_LOG_RETRY_TIMES) {
                    reportError(RaftError.EBUSY.getNumber(), "LogManager is busy, disk queue overload.");
                    return;
                }
                ThreadHelper.onSpinWait();
            }
        }
        doUnlock = false;
        if (!wakeupAllWaiter(this.writeLock)) {
            notifyLastLogIndexListeners();
        }
    } finally {
        if (doUnlock) {
            this.writeLock.unlock();
        }
    }
}

Example 7 with EventTranslator

use of com.lmax.disruptor.EventTranslator in project dingo by dingodb.

the class NodeImpl method apply.

@Override
public void apply(final Task task) {
    if (this.shutdownLatch != null) {
        Utils.runClosureInThread(task.getDone(), new Status(RaftError.ENODESHUTDOWN, "Node is shutting down."));
        throw new IllegalStateException("Node is shutting down");
    }
    Requires.requireNonNull(task, "Null task");
    final LogEntry entry = new LogEntry();
    entry.setData(task.getData());
    int retryTimes = 0;
    try {
        final EventTranslator<LogEntryAndClosure> translator = (event, sequence) -> {
            event.reset();
            event.done = task.getDone();
            event.entry = entry;
            event.expectedTerm = task.getExpectedTerm();
        };
        this.applyQueue.publishEvent(translator);
    /*
            while (true) {
                if (this.applyQueue.tryPublishEvent(translator)) {
                    break;
                } else {
                    retryTimes++;
                    if (retryTimes > MAX_APPLY_RETRY_TIMES) {
                        Utils.runClosureInThread(task.getDone(),
                            new Status(RaftError.EBUSY, "Node is busy, has too many tasks."));
                        LOG.warn("Node {} applyQueue is overload.", getNodeId());
                        this.metrics.recordTimes("apply-task-overload-times", 1);
                        return;
                    }
                    ThreadHelper.onSpinWait();
                }
            }
             */
    } catch (final Exception e) {
        LOG.error("Fail to apply task.", e);
        Utils.runClosureInThread(task.getDone(), new Status(RaftError.EPERM, "Node is down."));
    }
}