/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF 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.apache.stratos.cloud.controller.publisher;
import java.util.HashMap;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.stratos.cloud.controller.runtime.FasterLookUpDataHolder;
import org.apache.stratos.cloud.controller.topology.TopologySynchronizerTask;
import org.apache.stratos.cloud.controller.util.CloudControllerConstants;
import org.wso2.carbon.ntask.common.TaskException;
import org.wso2.carbon.ntask.core.TaskInfo;
import org.wso2.carbon.ntask.core.TaskManager;
import org.wso2.carbon.ntask.core.service.TaskService;
/**
* Topology synchronizer task scheduler for scheduling the topology synchronizer task
* using carbon task service.
*/
public class TopologySynchronizerTaskScheduler {
private static final Log log = LogFactory.getLog(TopologySynchronizerTaskScheduler.class);
private static final FasterLookUpDataHolder dataHolder = FasterLookUpDataHolder.getInstance();
public static void schedule(TaskService taskService) {
TaskManager taskManager = null;
try {
if (!taskService.getRegisteredTaskTypes().contains(CloudControllerConstants.TOPOLOGY_SYNC_TASK_TYPE)) {
// Register task type
taskService.registerTaskType(CloudControllerConstants.TOPOLOGY_SYNC_TASK_TYPE);
// Register task
taskManager = taskService.getTaskManager(CloudControllerConstants.TOPOLOGY_SYNC_TASK_TYPE);
String cronProp = dataHolder.getTopologyConfig().getProperty(CloudControllerConstants.CRON_PROPERTY);
String cron = cronProp != null ? cronProp :CloudControllerConstants.TOPOLOGY_SYNC_CRON ;
TaskInfo.TriggerInfo triggerInfo = new TaskInfo.TriggerInfo(cron);
TaskInfo taskInfo = new TaskInfo(CloudControllerConstants.TOPOLOGY_SYNC_TASK_NAME,
TopologySynchronizerTask.class.getName(),
new HashMap<String, String>(), triggerInfo);
taskManager.registerTask(taskInfo);
if(log.isDebugEnabled()) {
log.debug(String.format("Topology synchronization task scheduled: %s", CloudControllerConstants.TOPOLOGY_SYNC_TASK_NAME));
}
}
} catch (Exception e) {
if (taskManager != null) {
try {
taskManager.deleteTask(CloudControllerConstants.TOPOLOGY_SYNC_TASK_NAME);
} catch (TaskException te) {
if (log.isErrorEnabled()) {
log.error(te);
}
}
}
String msg = String.format("Could not schedule topology synchronization task: %s", CloudControllerConstants.TOPOLOGY_SYNC_TASK_NAME);
log.error(msg, e);
throw new RuntimeException(msg, e);
}
}
}