Java tutorial
/** * Copyright 2014 Telefonica Investigacin y Desarrollo, S.A.U <br> * This file is part of FI-WARE project. * <p> * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with * the License. * </p> * <p> * You may obtain a copy of the License at:<br> * <br> * http://www.apache.org/licenses/LICENSE-2.0 * </p> * <p> * 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. * </p> * <p> * See the License for the specific language governing permissions and limitations under the License. * </p> * <p> * For those usages not covered by the Apache version 2.0 License please contact with opensource@tid.es * </p> */ package com.telefonica.euro_iaas.paasmanager.manager.async.impl; import static com.telefonica.euro_iaas.paasmanager.util.SystemPropertiesProvider.VIRTUAL_SERVICE_BASE_URL; import java.text.MessageFormat; import java.util.Date; import java.util.logging.Logger; import org.apache.commons.lang.StringUtils; import org.springframework.scheduling.annotation.Async; import com.telefonica.euro_iaas.commons.dao.EntityNotFoundException; import com.telefonica.euro_iaas.paasmanager.exception.TaskNotFoundException; import com.telefonica.euro_iaas.paasmanager.manager.VirtualServiceManager; import com.telefonica.euro_iaas.paasmanager.manager.async.TaskManager; import com.telefonica.euro_iaas.paasmanager.manager.async.VirtualServiceAsyncManager; import com.telefonica.euro_iaas.paasmanager.model.InstallableInstance; import com.telefonica.euro_iaas.paasmanager.model.Task; import com.telefonica.euro_iaas.paasmanager.model.Task.TaskStates; import com.telefonica.euro_iaas.paasmanager.model.TaskError; import com.telefonica.euro_iaas.paasmanager.model.TaskReference; import com.telefonica.euro_iaas.paasmanager.util.SystemPropertiesProvider; import com.telefonica.euro_iaas.paasmanager.util.TaskNotificator; /** * @author jesus.movilla */ public class VirtualServiceAsyncManagerImpl implements VirtualServiceAsyncManager { private static Logger log = Logger.getLogger(EnvironmentInstanceAsyncManagerImpl.class.getName()); private TaskNotificator taskNotificator; private TaskManager taskManager; private SystemPropertiesProvider propertiesProvider; private VirtualServiceManager virtualServiceManager; /* * (non-Javadoc) * @see com.telefonica.euro_iaas.paasmanager.manager.async.VirtualServiceAsyncManager #create(java.lang.String, * com.telefonica.euro_iaas.paasmanager.model.Task, java.lang.String) */ @Async public void create(String virtualServiceName, String virtualService, Task task, String callback) { try { virtualServiceManager.create(virtualServiceName, virtualService); updateSuccessTask(task, virtualServiceName); log.info("The VirtualService " + virtualServiceName + " has been CORRECTLY installed"); } catch (TaskNotFoundException e) { String errorMsg = "Unable to update task: " + e.getTask().getHref() + ". Description: " + e.getMessage(); updateErrorTaskOnInstall(virtualServiceName, task, errorMsg, e); } catch (Exception e) { String errorMsg = "Unexpected error installing virtualService : " + virtualServiceName + ". Description:" + e.getMessage(); updateErrorTaskOnInstall(virtualServiceName, task, errorMsg, e); } finally { notifyTask(callback, task); } } /* * Update the task with necessary information when the task is success. */ private void updateSuccessTask(Task task, String virtualServiceName) throws TaskNotFoundException { InstallableInstance productInstance; Task loadedTask; String piResource = MessageFormat.format(propertiesProvider.getProperty(VIRTUAL_SERVICE_BASE_URL), virtualServiceName); // the // virtualServiceName try { loadedTask = taskManager.load(task.getId()); } catch (EntityNotFoundException e) { throw new TaskNotFoundException(e.getMessage(), task); } // Uncommented - Could not commit JPA transaction; nested exception is // javax.persistence.RollbackException: Transaction marked as // rollbackOnly // loadedTask.setResult(new TaskReference(piResource)); loadedTask.setEndTime(new Date()); loadedTask.setStatus(TaskStates.SUCCESS); taskManager.updateTask(loadedTask); } /* * Update the error task in install operation. The installation is a bit different to the other operations because * the instance could exist or not so this method shall do this check. */ private void updateErrorTaskOnInstall(String virtualServiceName, Task task, String errorMsg, Throwable e) { updateErrorTask(virtualServiceName, task, errorMsg, e); } /* * Update the task with necessary information when the task is wrong and the product instance exists in the system. */ private void updateErrorTask(String virtualServiceName, Task task, String message, Throwable t) { String aiResource = MessageFormat.format(propertiesProvider.getProperty(VIRTUAL_SERVICE_BASE_URL), virtualServiceName); task.setResult(new TaskReference(aiResource)); updateErrorTask(task, message, t); } /* * Update the task with necessary information when the task is wrong. */ private void updateErrorTask(Task task, String message, Throwable t) { TaskError error = new TaskError(message); error.setMajorErrorCode(t.getMessage()); error.setMinorErrorCode(t.getClass().getSimpleName()); task.setEndTime(new Date()); task.setStatus(TaskStates.ERROR); task.setError(error); taskManager.updateTask(task); log.info("An error occurs while installing Virtual Service. See task " + task.getHref() + " for more information"); } private void notifyTask(String url, Task task) { if (!StringUtils.isEmpty(url)) { taskNotificator.notify(url, task); } } /** * @param taskManager * the taskManager to set */ public void setTaskManager(TaskManager taskManager) { this.taskManager = taskManager; } /** * @param propertiesProvider * the propertiesProvider to set */ public void setPropertiesProvider(SystemPropertiesProvider propertiesProvider) { this.propertiesProvider = propertiesProvider; } /** * @param taskNotificator * the taskNotificator to set */ public void setTaskNotificator(TaskNotificator taskNotificator) { this.taskNotificator = taskNotificator; } /** * @param virtualServiceManager * the virtualServiceManager to set */ public void setVirtualServiceManager(VirtualServiceManager virtualServiceManager) { this.virtualServiceManager = virtualServiceManager; } }