/* 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.cmd;
import java.io.Serializable;
import org.activiti.engine.ActivitiException;
import org.activiti.engine.ActivitiIllegalArgumentException;
import org.activiti.engine.JobNotFoundException;
import org.activiti.engine.delegate.event.ActivitiEventType;
import org.activiti.engine.delegate.event.impl.ActivitiEventBuilder;
import org.activiti.engine.impl.cfg.TransactionState;
import org.activiti.engine.impl.context.Context;
import org.activiti.engine.impl.interceptor.Command;
import org.activiti.engine.impl.interceptor.CommandContext;
import org.activiti.engine.impl.interceptor.CommandExecutor;
import org.activiti.engine.impl.jobexecutor.FailedJobListener;
import org.activiti.engine.impl.jobexecutor.JobExecutorContext;
import org.activiti.engine.impl.persistence.entity.JobEntity;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* @author Tom Baeyens
* @author Joram Barrez
*/
public class ExecuteJobsCmd implements Command<Object>, Serializable {
private static final long serialVersionUID = 1L;
private static Logger log = LoggerFactory.getLogger(ExecuteJobsCmd.class);
protected String jobId;
protected JobEntity job;
public ExecuteJobsCmd(String jobId) {
this.jobId = jobId;
}
public ExecuteJobsCmd(JobEntity job) {
this.job = job;
}
public Object execute(CommandContext commandContext) {
if (jobId == null && job == null) {
throw new ActivitiIllegalArgumentException("jobId and job is null");
}
if (job == null) {
job = commandContext
.getJobEntityManager()
.findJobById(jobId);
}
if (job == null) {
throw new JobNotFoundException(jobId);
}
if (log.isDebugEnabled()) {
log.debug("Executing job {}", job.getId());
}
JobExecutorContext jobExecutorContext = Context.getJobExecutorContext();
if (jobExecutorContext != null) { // if null, then we are not called by the job executor
jobExecutorContext.setCurrentJob(job);
}
try {
job.execute(commandContext);
if (commandContext.getEventDispatcher().isEnabled()) {
commandContext.getEventDispatcher().dispatchEvent(ActivitiEventBuilder.createEntityEvent(
ActivitiEventType.JOB_EXECUTION_SUCCESS, job));
}
} catch (Throwable exception) {
// When transaction is rolled back, decrement retries
CommandExecutor commandExecutor = Context
.getProcessEngineConfiguration()
.getCommandExecutor();
commandContext.getTransactionContext().addTransactionListener(
TransactionState.ROLLED_BACK,
new FailedJobListener(commandExecutor, jobId, exception));
// Dispatch an event, indicating job execution failed in a try-catch block, to prevent the original
// exception to be swallowed
if (commandContext.getEventDispatcher().isEnabled()) {
try {
commandContext.getEventDispatcher().dispatchEvent(ActivitiEventBuilder.createEntityExceptionEvent(
ActivitiEventType.JOB_EXECUTION_FAILURE, job, exception));
} catch(Throwable ignore) {
log.warn("Exception occured while dispatching job failure event, ignoring.", ignore);
}
}
// Finally, Throw the exception to indicate the ExecuteJobCmd failed
throw new ActivitiException("Job " + jobId + " failed", exception);
} finally {
if (jobExecutorContext != null) {
jobExecutorContext.setCurrentJob(null);
}
}
return null;
}
public String getJobId() {
return jobId;
}
}