spring-batch InfiniteLoopWriter 源码
spring-batch InfiniteLoopWriter 代码
文件路径：/spring-batch-samples/src/main/java/org/springframework/batch/sample/common/InfiniteLoopWriter.java
/*
* Copyright 2006-2021 the original author or authors.
*
* Licensed 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
*
* https://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.springframework.batch.sample.common;
import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.batch.core.StepExecution;
import org.springframework.batch.core.StepExecutionListener;
import org.springframework.batch.item.ItemWriter;
/**
* Simple module implementation that will always return true to indicate that processing
* should continue. This is useful for testing graceful shutdown of jobs.
*
* @author Lucas Ward
* @author Mahmoud Ben Hassine
*
*/
public class InfiniteLoopWriter implements StepExecutionListener, ItemWriter<Object> {
private static final Log LOG = LogFactory.getLog(InfiniteLoopWriter.class);
private StepExecution stepExecution;
private int count = 0;
/**
* @see org.springframework.batch.core.StepExecutionListener#beforeStep(StepExecution)
*/
@Override
public void beforeStep(StepExecution stepExecution) {
this.stepExecution = stepExecution;
}
public InfiniteLoopWriter() {
super();
}
@Override
public void write(List<? extends Object> items) throws Exception {
try {
Thread.sleep(500);
}
catch (InterruptedException e) {
Thread.currentThread().interrupt();
throw new IllegalStateException("Job interrupted.", e);
}
stepExecution.setWriteCount(++count);
if (LOG.isInfoEnabled()) {
LOG.info("Executing infinite loop, at count=" + count);
}
}
}
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