org.springframework.xd.dirt.plugins.job.ModuleJobLauncher.java Source code

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Here is the source code for org.springframework.xd.dirt.plugins.job.ModuleJobLauncher.java

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/*
 * Copyright 2013 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.xd.dirt.plugins.job;

import java.util.Collection;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import org.springframework.batch.core.JobParameters;
import org.springframework.batch.core.configuration.JobRegistry;
import org.springframework.batch.core.launch.JobLauncher;
import org.springframework.context.Lifecycle;
import org.springframework.util.Assert;
import org.springframework.util.StringUtils;

/**
 * Executes all jobs defined within a given stream once the context has been started. This really should be replaced
 * once we have the concept of triggers built in.
 *
 * @author Michael Minella
 * @author Gunnar Hillert
 * @since 1.0
 *
 */
public class ModuleJobLauncher implements Lifecycle {

    protected final Log logger = LogFactory.getLog(getClass());

    private JobLauncher launcher;

    private String groupName;

    private JobRegistry registry;

    private static String JOB_NAME_DELIMITER = ".";

    private static int NAME_INDEX = 0;

    private boolean isRunning = false;

    private final boolean executeBatchJobOnStartup;

    private final JobParameters jobParameters;

    public ModuleJobLauncher(JobLauncher launcher, JobRegistry registry, boolean executeBatchJobOnStartup,
            JobParametersBean jobParametersBean) {
        Assert.notNull(launcher, "A JobLauncher is required");

        this.launcher = launcher;
        this.registry = registry;
        this.executeBatchJobOnStartup = executeBatchJobOnStartup;
        this.jobParameters = jobParametersBean.getJobParameters();
    }

    @Override
    public void start() {
        isRunning = true;

        if (executeBatchJobOnStartup) {
            executeBatchJob();
        }

    }

    public void executeBatchJob() {
        Collection<String> names = registry.getJobNames();

        for (String curName : names) {
            String[] jobNames = StringUtils.split(curName, JOB_NAME_DELIMITER);
            if (jobNames[NAME_INDEX].equals(groupName)) {
                try {
                    launcher.run(registry.getJob(curName), jobParameters);
                } catch (Exception e) {
                    logger.error("An error occured while starting job " + curName, e);
                }
            }
        }
    }

    @Override
    public void stop() {
        isRunning = false;
    }

    @Override
    public boolean isRunning() {
        return isRunning;
    }

    public void setGroupName(String groupName) {
        this.groupName = groupName;
    }
}