kafka TransactionalRequestResult 源码
kafka TransactionalRequestResult 代码
文件路径：/clients/src/main/java/org/apache/kafka/clients/producer/internals/TransactionalRequestResult.java
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.kafka.clients.producer.internals;
import org.apache.kafka.common.errors.InterruptException;
import org.apache.kafka.common.errors.TimeoutException;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
public final class TransactionalRequestResult {
private final CountDownLatch latch;
private volatile RuntimeException error = null;
private final String operation;
private volatile boolean isAcked = false;
public TransactionalRequestResult(String operation) {
this(new CountDownLatch(1), operation);
}
private TransactionalRequestResult(CountDownLatch latch, String operation) {
this.latch = latch;
this.operation = operation;
}
public void fail(RuntimeException error) {
this.error = error;
this.latch.countDown();
}
public void done() {
this.latch.countDown();
}
public void await() {
this.await(Long.MAX_VALUE, TimeUnit.MILLISECONDS);
}
public void await(long timeout, TimeUnit unit) {
try {
boolean success = latch.await(timeout, unit);
if (!success) {
throw new TimeoutException("Timeout expired after " + unit.toMillis(timeout) +
"ms while awaiting " + operation);
}
isAcked = true;
if (error != null) {
throw error;
}
} catch (InterruptedException e) {
throw new InterruptException("Received interrupt while awaiting " + operation, e);
}
}
public RuntimeException error() {
return error;
}
public boolean isSuccessful() {
return isCompleted() && error == null;
}
public boolean isCompleted() {
return latch.getCount() == 0L;
}
public boolean isAcked() {
return isAcked;
}
}
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