Package org.activiti.engine.impl.jobexecutor

Source Code of org.activiti.engine.impl.jobexecutor.ExecuteJobsRunnable

/* 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.activiti.engine.impl.jobexecutor;

import java.util.List;

import org.activiti.engine.impl.cmd.ExecuteJobsCmd;
import org.activiti.engine.impl.context.Context;
import org.activiti.engine.impl.interceptor.CommandExecutor;
import org.activiti.engine.impl.persistence.entity.JobEntity;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
* @author Tom Baeyens
* @author Daniel Meyer
* @author Joram Barrez
*/
public class ExecuteJobsRunnable implements Runnable {

  private static Logger log = LoggerFactory.getLogger(ExecuteJobsRunnable.class);

  private JobEntity job;
  private List<String> jobIds;
  private JobExecutor jobExecutor;

  public ExecuteJobsRunnable(JobExecutor jobExecutor, JobEntity job) {
    this.jobExecutor = jobExecutor;
    this.job = job;
  }

  public ExecuteJobsRunnable(JobExecutor jobExecutor, List<String> jobIds) {
    this.jobExecutor = jobExecutor;
    this.jobIds = jobIds;
  }

  public void run() {
    if (jobIds != null) {
      handleMultipleJobs();
    }
    if (job != null) {
      handleSingleJob();
    }
  }

  protected void handleSingleJob() {
    final SingleJobExecutorContext jobExecutorContext = new SingleJobExecutorContext();
    final List<JobEntity> currentProcessorJobQueue = jobExecutorContext.getCurrentProcessorJobQueue();
    final CommandExecutor commandExecutor = jobExecutor.getCommandExecutor();

    currentProcessorJobQueue.add(job);

    Context.setJobExecutorContext(jobExecutorContext);
    try {
      while (!currentProcessorJobQueue.isEmpty()) {

        JobEntity currentJob = currentProcessorJobQueue.remove(0);
        try {
          commandExecutor.execute(new ExecuteJobsCmd(currentJob));
        } catch (Throwable e) {
          log.error("exception during job execution: {}", e.getMessage(), e);
        } finally {
          jobExecutor.jobDone(currentJob);
        }
      }
    } finally {
      Context.removeJobExecutorContext();
    }
  }

  protected void handleMultipleJobs() {
    final MultipleJobsExecutorContext jobExecutorContext = new MultipleJobsExecutorContext();
    final List<String> currentProcessorJobQueue = jobExecutorContext.getCurrentProcessorJobQueue();
    final CommandExecutor commandExecutor = jobExecutor.getCommandExecutor();

    currentProcessorJobQueue.addAll(jobIds);

    Context.setJobExecutorContext(jobExecutorContext);
    try {
      while (!currentProcessorJobQueue.isEmpty()) {

        String currentJobId = currentProcessorJobQueue.remove(0);
        try {
          commandExecutor.execute(new ExecuteJobsCmd(currentJobId));
        } catch (Throwable e) {
          log.error("exception during job execution: {}", e.getMessage(), e);
        } finally {
          jobExecutor.jobDone(currentJobId);
        }
      }
    } finally {
      Context.removeJobExecutorContext();
    }
  }
}
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