Package org.springframework.data.hadoop.batch

Source Code of org.springframework.data.hadoop.batch.JobsTrigger

/*
* Copyright 2011 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.data.hadoop.batch;

import java.util.ArrayList;
import java.util.List;
import java.util.Map;

import org.springframework.batch.core.BatchStatus;
import org.springframework.batch.core.Job;
import org.springframework.batch.core.JobExecution;
import org.springframework.batch.core.JobParameters;
import org.springframework.batch.core.launch.JobLauncher;
import org.springframework.beans.factory.BeanInitializationException;
import org.springframework.beans.factory.ListableBeanFactory;

/**
* Trigger bean used for executing jobs after a context has been initialized.
*
* @author Costin Leau
*/
public class JobsTrigger {

  public static List<JobExecution> startJobs(ListableBeanFactory bf) {
    return startJobs(bf, new JobParameters());
  }

  public static List<JobExecution> startJobs(ListableBeanFactory bf, JobParameters params) {
    JobLauncher launcher = bf.getBean(JobLauncher.class);
    Map<String, Job> jobs = bf.getBeansOfType(Job.class);

    List<JobExecution> executions = new ArrayList<JobExecution>(jobs.size());
    for (Map.Entry<String, Job> entry : jobs.entrySet()) {
      RuntimeException e = null;
      try {
        JobExecution jobExec = launcher.run(entry.getValue(), params);
        executions.add(jobExec);
        if (jobExec.getStatus().equals(BatchStatus.FAILED)) {
          e = new BeanInitializationException("Failed executing job " + entry.getKey());
        }
      } catch (Exception ex) {
        throw new BeanInitializationException("Cannot execute job " + entry.getKey(), ex);
      }
      if (e != null) {
        throw e;
      }
    }
    return executions;
  }

  public static JobExecution startJob(ListableBeanFactory lbf, String jobName) throws Exception {
    Job job = lbf.getBean(jobName, Job.class);
    JobLauncher launcher = lbf.getBean(JobLauncher.class);
    return launcher.run(job, new JobParameters());
  }
}
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