org.springframework.batch.core.step.ThreadStepInterruptionPolicy.java Source code

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Here is the source code for org.springframework.batch.core.step.ThreadStepInterruptionPolicy.java

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/*
 * Copyright 2006-2012 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
 *
 *      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.springframework.batch.core.step;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.batch.core.JobInterruptedException;
import org.springframework.batch.core.StepExecution;

/**
 * Policy that checks the current thread to see if it has been interrupted.
 *
 * @author Lucas Ward
 * @author Dave Syer
 *
 */
public class ThreadStepInterruptionPolicy implements StepInterruptionPolicy {

    protected static final Log logger = LogFactory.getLog(ThreadStepInterruptionPolicy.class);

    /**
     * Returns if the current job lifecycle has been interrupted by checking if
     * the current thread is interrupted.
     */
    @Override
    public void checkInterrupted(StepExecution stepExecution) throws JobInterruptedException {

        if (isInterrupted(stepExecution)) {
            throw new JobInterruptedException("Job interrupted status detected.");
        }

    }

    /**
     * @param stepExecution the current context
     * @return true if the job has been interrupted
     */
    private boolean isInterrupted(StepExecution stepExecution) {
        boolean interrupted = Thread.currentThread().isInterrupted();
        if (interrupted) {
            logger.info("Step interrupted through Thread API");
        } else {
            interrupted = stepExecution.isTerminateOnly();
            if (interrupted) {
                logger.info("Step interrupted through StepExecution");
            }
        }
        return interrupted;
    }

}