org.camunda.bpm.container.impl.deployment.jobexecutor.StartJobAcquisitionStep Maven / Gradle / Ivy
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* Copyright Camunda Services GmbH and/or licensed to Camunda Services GmbH
* under one or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information regarding copyright
* ownership. Camunda licenses this file to you under the Apache License,
* Version 2.0; 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.camunda.bpm.container.impl.deployment.jobexecutor;
import static org.camunda.bpm.container.impl.deployment.Attachments.PROCESS_APPLICATION;
import java.util.Map;
import org.camunda.bpm.application.AbstractProcessApplication;
import org.camunda.bpm.container.impl.ContainerIntegrationLogger;
import org.camunda.bpm.container.impl.jmx.services.JmxManagedJobExecutor;
import org.camunda.bpm.container.impl.metadata.PropertyHelper;
import org.camunda.bpm.container.impl.metadata.spi.JobAcquisitionXml;
import org.camunda.bpm.container.impl.spi.PlatformServiceContainer;
import org.camunda.bpm.container.impl.spi.DeploymentOperation;
import org.camunda.bpm.container.impl.spi.DeploymentOperationStep;
import org.camunda.bpm.container.impl.spi.ServiceTypes;
import org.camunda.bpm.engine.ProcessEngineConfiguration;
import org.camunda.bpm.engine.ProcessEngineException;
import org.camunda.bpm.engine.impl.ProcessEngineLogger;
import org.camunda.bpm.engine.impl.jobexecutor.JobExecutor;
import org.camunda.bpm.engine.impl.jobexecutor.RuntimeContainerJobExecutor;
/**
* Deployment operation step responsible for starting a JobEexecutor
*
* @author Daniel Meyer
*
*/
public class StartJobAcquisitionStep extends DeploymentOperationStep {
protected final static ContainerIntegrationLogger LOG = ProcessEngineLogger.CONTAINER_INTEGRATION_LOGGER;
protected final JobAcquisitionXml jobAcquisitionXml;
public StartJobAcquisitionStep(JobAcquisitionXml jobAcquisitionXml) {
this.jobAcquisitionXml = jobAcquisitionXml;
}
public String getName() {
return "Start job acquisition '"+jobAcquisitionXml.getName()+"'";
}
public void performOperationStep(DeploymentOperation operationContext) {
final PlatformServiceContainer serviceContainer = operationContext.getServiceContainer();
final AbstractProcessApplication processApplication = operationContext.getAttachment(PROCESS_APPLICATION);
ClassLoader configurationClassloader = null;
if(processApplication != null) {
configurationClassloader = processApplication.getProcessApplicationClassloader();
} else {
configurationClassloader = ProcessEngineConfiguration.class.getClassLoader();
}
String configurationClassName = jobAcquisitionXml.getJobExecutorClassName();
if(configurationClassName == null || configurationClassName.isEmpty()) {
configurationClassName = RuntimeContainerJobExecutor.class.getName();
}
// create & instantiate the job executor class
Class jobExecutorClass = loadJobExecutorClass(configurationClassloader, configurationClassName);
JobExecutor jobExecutor = instantiateJobExecutor(jobExecutorClass);
// apply properties
Map properties = jobAcquisitionXml.getProperties();
PropertyHelper.applyProperties(jobExecutor, properties);
// construct service for job executor
JmxManagedJobExecutor jmxManagedJobExecutor = new JmxManagedJobExecutor(jobExecutor);
// deploy the job executor service into the container
serviceContainer.startService(ServiceTypes.JOB_EXECUTOR, jobAcquisitionXml.getName(), jmxManagedJobExecutor);
}
protected JobExecutor instantiateJobExecutor(Class configurationClass) {
try {
return configurationClass.newInstance();
}
catch (Exception e) {
throw LOG.couldNotInstantiateJobExecutorClass(e);
}
}
@SuppressWarnings("unchecked")
protected Class loadJobExecutorClass(ClassLoader processApplicationClassloader, String jobExecutorClassname) {
try {
return (Class) processApplicationClassloader.loadClass(jobExecutorClassname);
}
catch (ClassNotFoundException e) {
throw LOG.couldNotLoadJobExecutorClass(e);
}
}
}