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Elasticsearch subproject :server
/*
* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
* or more contributor license agreements. Licensed under the Elastic License
* 2.0 and the Server Side Public License, v 1; you may not use this file except
* in compliance with, at your election, the Elastic License 2.0 or the Server
* Side Public License, v 1.
*/
package org.elasticsearch.action.bulk;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.threadpool.Scheduler;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.Semaphore;
import java.util.concurrent.TimeUnit;
import java.util.function.BiConsumer;
/**
* Implements the low-level details of bulk request handling
*/
public final class BulkRequestHandler {
private final Logger logger;
private final BiConsumer> consumer;
private final BulkProcessor.Listener listener;
private final Semaphore semaphore;
private final Retry retry;
private final int concurrentRequests;
BulkRequestHandler(
BiConsumer> consumer,
BackoffPolicy backoffPolicy,
BulkProcessor.Listener listener,
Scheduler scheduler,
int concurrentRequests
) {
assert concurrentRequests >= 0;
this.logger = LogManager.getLogger(getClass());
this.consumer = consumer;
this.listener = listener;
this.concurrentRequests = concurrentRequests;
this.retry = new Retry(backoffPolicy, scheduler);
this.semaphore = new Semaphore(concurrentRequests > 0 ? concurrentRequests : 1);
}
public void execute(BulkRequest bulkRequest, long executionId) {
Runnable toRelease = () -> {};
boolean bulkRequestSetupSuccessful = false;
try {
listener.beforeBulk(executionId, bulkRequest);
semaphore.acquire();
toRelease = semaphore::release;
CountDownLatch latch = new CountDownLatch(1);
retry.withBackoff(consumer, bulkRequest, ActionListener.runAfter(new ActionListener() {
@Override
public void onResponse(BulkResponse response) {
listener.afterBulk(executionId, bulkRequest, response);
}
@Override
public void onFailure(Exception e) {
listener.afterBulk(executionId, bulkRequest, e);
}
}, () -> {
semaphore.release();
latch.countDown();
}));
bulkRequestSetupSuccessful = true;
if (concurrentRequests == 0) {
latch.await();
}
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
logger.info(() -> "Bulk request " + executionId + " has been cancelled.", e);
listener.afterBulk(executionId, bulkRequest, e);
} catch (Exception e) {
logger.warn(() -> "Failed to execute bulk request " + executionId + ".", e);
listener.afterBulk(executionId, bulkRequest, e);
} finally {
if (bulkRequestSetupSuccessful == false) { // if we fail on client.bulk() release the semaphore
toRelease.run();
}
}
}
boolean awaitClose(long timeout, TimeUnit unit) throws InterruptedException {
if (semaphore.tryAcquire(this.concurrentRequests, timeout, unit)) {
semaphore.release(this.concurrentRequests);
return true;
}
return false;
}
}