kafka PayloadIterator 源码
kafka PayloadIterator 代码
文件路径：/trogdor/src/main/java/org/apache/kafka/trogdor/workload/PayloadIterator.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.trogdor.workload;
import java.util.Iterator;
/**
* An iterator which wraps a PayloadGenerator.
*/
public final class PayloadIterator implements Iterator<byte[]> {
private final PayloadGenerator generator;
private long position = 0;
public PayloadIterator(PayloadGenerator generator) {
this.generator = generator;
}
@Override
public boolean hasNext() {
return true;
}
@Override
public synchronized byte[] next() {
return generator.generate(position++);
}
@Override
public void remove() {
throw new UnsupportedOperationException();
}
public synchronized void seek(long position) {
this.position = position;
}
public synchronized long position() {
return this.position;
}
}
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