/*
* Copyright (c) 2005-2010, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
* WSO2 Inc. licenses this file to you 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.wso2.carbon.dataservices.taskscheduler.internal;
import org.apache.axis2.context.ConfigurationContext;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.synapse.task.TaskDescriptionRepository;
import org.apache.synapse.task.TaskScheduler;
import org.apache.synapse.task.service.TaskManagementService;
import org.osgi.framework.BundleContext;
import org.osgi.service.component.ComponentContext;
import org.wso2.carbon.dataservices.taskscheduler.multitenancy.TaskSchedulerInitializer;
import org.wso2.carbon.dataservices.taskscheduler.services.TaskMetaDataProviderService;
import org.wso2.carbon.dataservices.taskscheduler.services.TaskManagementAdminService;
import org.wso2.carbon.task.JobMetaDataProviderServiceHandler;
import org.wso2.carbon.task.TaskManagementServiceHandler;
import org.wso2.carbon.task.TaskManager;
import org.wso2.carbon.task.services.JobMetaDataProviderService;
import org.wso2.carbon.utils.Axis2ConfigurationContextObserver;
import org.wso2.carbon.utils.ConfigurationContextService;
/**
* This class activates the dataservices.taskscheduler bundle
*
* @scr.component name="dataservices.taskscheduler" immediate="true"
* @scr.reference name="carbon.core.configurationContextService"
* interface="org.wso2.carbon.utils.ConfigurationContextService"
* cardinality="1..1" policy="dynamic" bind="setConfigurationContextService"
* unbind="unsetConfigurationContextService"
*/
public class TaskSchedulerServiceComponent {
private ConfigurationContext configurationContext;
private static final Log log = LogFactory.getLog(TaskSchedulerServiceComponent.class);
private JobMetaDataProviderServiceHandler jobMetaDataProviderServiceHandler =
new JobMetaDataProviderServiceHandler();
private TaskManagementServiceHandler taskManagementServiceHandler =
new TaskManagementServiceHandler();
/**
* This method activates the Task Scheduler bundle
*
* @param componentContext ComponentContext
*/
protected void activate(ComponentContext componentContext) {
try {
log.debug("Installing Task Scheduler Components");
BundleContext bundleContext = componentContext.getBundleContext();
TaskSchedulerBundleActivator bundleActivator=new TaskSchedulerBundleActivator();
bundleActivator.start(bundleContext);
bundleContext.registerService(JobMetaDataProviderService.class.getName(),
new TaskMetaDataProviderService(), null);
bundleContext.registerService(TaskManagementService.class.getName(),
new TaskManagementAdminService(), null);
bundleContext.registerService(Axis2ConfigurationContextObserver.class.getName(),
new TaskSchedulerInitializer(), null);
/*
* Adding the services to the jobMetaDataProviderServiceHandler which implement the
* JobMetaDataProviderService interface, available in the current bundleContext.
*/
jobMetaDataProviderServiceHandler.addService(bundleContext.getService(
bundleContext.getServiceReference(JobMetaDataProviderService.class.getName())));
/*
* Adding the services to the taskManagementServiceHandler which implement the
* TaskManagementService interface, available in the current bundleContext.
*/
taskManagementServiceHandler.addService(bundleContext.getService(
bundleContext.getServiceReference(TaskManagementService.class.getName())));
configurationContext.setProperty(
TaskManager.CARBON_TASK_JOB_METADATA_SERVICE, jobMetaDataProviderServiceHandler);
configurationContext.setProperty(
TaskManager.CARBON_TASK_MANAGEMENT_SERVICE, taskManagementServiceHandler);
/*
* In this particular context, the TaskManager class of the Carbon Scheduled Tasks
* Component is used.
* Since the Scheduled Tasks Component itself does not initialize a TaskManager instance,
* this code snippet is used to initialize a TaskManager instance manually.
*/
TaskManager taskManager = (TaskManager) configurationContext.getProperty(
TaskManager.CARBON_TASK_MANAGER);
if (taskManager == null) {
taskManager = new TaskManager();
taskManager.init(jobMetaDataProviderServiceHandler, taskManagementServiceHandler);
configurationContext.setProperty(
TaskManager.CARBON_TASK_MANAGER, taskManager);
}
/*
* In this particular context, the TaskDescriptionRepository class of the
* Carbon Scheduled Tasks Component is used.
* Since the Scheduled Tasks Component itself does not initialize a
* TaskDescriptionRepository instance,this code snippet is used to initialize a
* the required instance manually.
*/
TaskDescriptionRepository taskDescriptionRepository = (TaskDescriptionRepository)
configurationContext.getProperty(TaskManager.CARBON_TASK_REPOSITORY);
if (taskDescriptionRepository == null) {
taskDescriptionRepository = new TaskDescriptionRepository();
configurationContext.setProperty(
TaskManager.CARBON_TASK_REPOSITORY, taskDescriptionRepository);
}
/*
* In this particular context, the TaskScheduler class of the
* Carbon Scheduled Tasks Component is used.
* Since the Scheduled Tasks Component itself does not initialize a
* TaskScheduler instance,this code snippet is used to initialize a
* the required instance manually.
*/
TaskScheduler taskScheduler = (TaskScheduler) configurationContext.getProperty(
TaskManager.CARBON_TASK_SCHEDULER);
if (taskScheduler == null) {
taskScheduler = new TaskScheduler(TaskManager.CARBON_TASK_SCHEDULER);
taskScheduler.init(null);
configurationContext.setProperty(
TaskManager.CARBON_TASK_SCHEDULER, taskScheduler);
} else if (taskScheduler.isInitialized()) {
taskScheduler.init(null);
}
} catch (Throwable e) {
log.error("An error occurred while executing the bundle activator method!", e);
}
}
/**
* The content of this method is intentionally kept blank as the deactivation gets handled
* by the underlying layer
*
* @param componentContext ComponentContext
*/
protected void deactivate(ComponentContext componentContext) {
}
/**
* This method is used to bind the ConfigurationContext which is being used in order to access
* it in this particular class
*
* @param configurationContextService configuration context service required to grab the current
*/
public void setConfigurationContextService(
ConfigurationContextService configurationContextService) {
this.configurationContext = configurationContextService.getServerConfigContext();
}
/**
* This method is used to unbind the ConfigurationContext which is being used from the context
* of this particular class
*
* @param configurationContextService configuration context service required to grab the current
*/
public void unsetConfigurationContextService(
ConfigurationContextService configurationContextService) {
this.configurationContext = null;
}
}