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

Example 1 with EventTranslator

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

the class ReadOnlyServiceImpl method addRequest.

@Override
public void addRequest(final byte[] reqCtx, final ReadIndexClosure closure) {
    if (this.shutdownLatch != null) {
        Utils.runClosureInThread(this.node.getOptions().getCommonExecutor(), closure, new Status(RaftError.EHOSTDOWN, "Was stopped"));
        throw new IllegalStateException("Service already shutdown.");
    }
    try {
        EventTranslator<ReadIndexEvent> translator = (event, sequence) -> {
            event.groupId = this.groupId;
            event.done = closure;
            event.requestContext = new Bytes(reqCtx);
            event.startTime = Utils.monotonicMs();
        };
        int retryTimes = 0;
        while (true) {
            if (this.readIndexQueue.tryPublishEvent(translator)) {
                break;
            } else {
                retryTimes++;
                if (retryTimes > MAX_ADD_REQUEST_RETRY_TIMES) {
                    Utils.runClosureInThread(this.node.getOptions().getCommonExecutor(), closure, new Status(RaftError.EBUSY, "Node is busy, has too many read-only requests."));
                    this.nodeMetrics.recordTimes("read-index-overload-times", 1);
                    LOG.warn("Node {} ReadOnlyServiceImpl readIndexQueue is overload.", this.node.getNodeId());
                    return;
                }
                ThreadHelper.onSpinWait();
            }
        }
    } catch (final Exception e) {
        Utils.runClosureInThread(this.node.getOptions().getCommonExecutor(), closure, new Status(RaftError.EPERM, "Node is down."));
    }
}

Example 2 with EventTranslator

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

the class ReadOnlyServiceImpl method addRequest.

@Override
public void addRequest(final byte[] reqCtx, final ReadIndexClosure closure) {
    if (this.shutdownLatch != null) {
        Utils.runClosureInThread(closure, new Status(RaftError.EHOSTDOWN, "Was stopped"));
        throw new IllegalStateException("Service already shutdown.");
    }
    try {
        EventTranslator<ReadIndexEvent> translator = (event, sequence) -> {
            event.done = closure;
            event.requestContext = new Bytes(reqCtx);
            event.startTime = Utils.monotonicMs();
        };
        int retryTimes = 0;
        while (true) {
            if (this.readIndexQueue.tryPublishEvent(translator)) {
                break;
            } else {
                retryTimes++;
                if (retryTimes > MAX_ADD_REQUEST_RETRY_TIMES) {
                    Utils.runClosureInThread(closure, new Status(RaftError.EBUSY, "Node is busy, has too many read-only requests."));
                    this.nodeMetrics.recordTimes("read-index-overload-times", 1);
                    LOG.warn("Node {} ReadOnlyServiceImpl readIndexQueue is overload.", this.node.getNodeId());
                    return;
                }
                ThreadHelper.onSpinWait();
            }
        }
    } catch (final Exception e) {
        Utils.runClosureInThread(closure, new Status(RaftError.EPERM, "Node is down."));
    }
}

Example 3 with EventTranslator

use of com.lmax.disruptor.EventTranslator in project sofa-jraft by sofastack.

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());
    final EventTranslator<LogEntryAndClosure> translator = (event, sequence) -> {
        event.reset();
        event.done = task.getDone();
        event.entry = entry;
        event.expectedTerm = task.getExpectedTerm();
    };
    switch(this.options.getApplyTaskMode()) {
        case Blocking:
            this.applyQueue.publishEvent(translator);
            break;
        case NonBlocking:
        default:
            if (!this.applyQueue.tryPublishEvent(translator)) {
                String errorMsg = "Node is busy, has too many tasks, queue is full and bufferSize=" + this.applyQueue.getBufferSize();
                Utils.runClosureInThread(task.getDone(), new Status(RaftError.EBUSY, errorMsg));
                LOG.warn("Node {} applyQueue is overload.", getNodeId());
                this.metrics.recordTimes("apply-task-overload-times", 1);
                if (task.getDone() == null) {
                    throw new OverloadException(errorMsg);
                }
            }
            break;
    }
}

Example 4 with EventTranslator

use of com.lmax.disruptor.EventTranslator in project sofa-jraft by sofastack.

the class ReadOnlyServiceImpl method addRequest.

@Override
public void addRequest(final byte[] reqCtx, final ReadIndexClosure closure) {
    if (this.shutdownLatch != null) {
        Utils.runClosureInThread(closure, new Status(RaftError.EHOSTDOWN, "Was stopped"));
        throw new IllegalStateException("Service already shutdown.");
    }
    try {
        EventTranslator<ReadIndexEvent> translator = (event, sequence) -> {
            event.done = closure;
            event.requestContext = new Bytes(reqCtx);
            event.startTime = Utils.monotonicMs();
        };
        switch(this.node.getOptions().getApplyTaskMode()) {
            case Blocking:
                this.readIndexQueue.publishEvent(translator);
                break;
            case NonBlocking:
            default:
                if (!this.readIndexQueue.tryPublishEvent(translator)) {
                    final String errorMsg = "Node is busy, has too many read-index requests, queue is full and bufferSize=" + this.readIndexQueue.getBufferSize();
                    Utils.runClosureInThread(closure, new Status(RaftError.EBUSY, errorMsg));
                    this.nodeMetrics.recordTimes("read-index-overload-times", 1);
                    LOG.warn("Node {} ReadOnlyServiceImpl readIndexQueue is overload.", this.node.getNodeId());
                    if (closure == null) {
                        throw new OverloadException(errorMsg);
                    }
                }
                break;
        }
    } catch (final Exception e) {
        Utils.runClosureInThread(closure, new Status(RaftError.EPERM, "Node is down."));
    }
}

Example 5 with EventTranslator

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

the class NodeImpl method apply.

@Override
public void apply(final Task task) {
    if (this.shutdownLatch != null) {
        Utils.runClosureInThread(this.getOptions().getCommonExecutor(), 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.groupId = groupId;
            event.done = task.getDone();
            event.entry = entry;
            event.expectedTerm = task.getExpectedTerm();
        };
        while (true) {
            if (this.applyQueue.tryPublishEvent(translator)) {
                break;
            } else {
                retryTimes++;
                if (retryTimes > MAX_APPLY_RETRY_TIMES) {
                    Utils.runClosureInThread(this.getOptions().getCommonExecutor(), 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(this.getOptions().getCommonExecutor(), task.getDone(), new Status(RaftError.EPERM, "Node is down."));
    }
}