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.Configuration.ENVIRONMENT_PATH; import static com.telefonica.euro_iaas.paasmanager.util.SystemPropertiesProvider.PAAS_MANAGER_URL; import java.text.MessageFormat; import java.util.Date; import org.apache.commons.lang.StringUtils; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import org.springframework.scheduling.annotation.Async; import com.telefonica.euro_iaas.commons.dao.EntityNotFoundException; import com.telefonica.euro_iaas.commons.dao.InvalidEntityException; import com.telefonica.euro_iaas.paasmanager.exception.InfrastructureException; import com.telefonica.euro_iaas.paasmanager.exception.TaskNotFoundException; import com.telefonica.euro_iaas.paasmanager.manager.TierInstanceManager; import com.telefonica.euro_iaas.paasmanager.manager.async.TaskManager; import com.telefonica.euro_iaas.paasmanager.manager.async.TierInstanceAsyncManager; import com.telefonica.euro_iaas.paasmanager.model.ClaudiaData; import com.telefonica.euro_iaas.paasmanager.model.EnvironmentInstance; 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.model.TierInstance; import com.telefonica.euro_iaas.paasmanager.util.SystemPropertiesProvider; import com.telefonica.euro_iaas.paasmanager.util.TaskNotificator; /** * Default implementation. * * @author bmmanso */ public class TierInstanceAsyncManagerImpl implements TierInstanceAsyncManager { private static Logger log = LoggerFactory.getLogger(TierInstanceAsyncManagerImpl.class.getName()); private TierInstanceManager tierInstanceManager; private TaskManager taskManager; private SystemPropertiesProvider propertiesProvider; private TaskNotificator taskNotificator; @Async public void create(ClaudiaData claudiaData, TierInstance tierInstance, EnvironmentInstance envInstance, Task task, String callback) { try { tierInstanceManager.create(claudiaData, tierInstance, envInstance, propertiesProvider); updateSuccessTask(task, tierInstance); log.info("The Tier Instance " + tierInstance.getName() + " has been CORRECTLY provisioned"); } catch (InfrastructureException e) { String errorMsg = " An error has ocurred in the process of creating VMs "; updateErrorTaskOnInstall(tierInstance, claudiaData.getVdc(), task, errorMsg, e); } catch (TaskNotFoundException e) { String errorMsg = "Unable to update task: " + e.getTask().getHref() + ". Description: " + e.getMessage(); updateErrorTaskOnInstall(tierInstance, claudiaData.getVdc(), task, errorMsg, e); } catch (Exception e) { String errorMsg = "Unexpected error creating productInstance. Description:" + e.getMessage(); updateErrorTaskOnInstall(tierInstance, claudiaData.getVdc(), task, errorMsg, e); } finally { notifyTask(callback, task); } } public void update(ClaudiaData claudiaData, TierInstance tierInstance, EnvironmentInstance envInstance, Task task, String callback) { try { tierInstanceManager.update(claudiaData, tierInstance, envInstance); updateSuccessTask(task, tierInstance); log.info("The Tier Instance " + tierInstance.getName() + " has been CORRECTLY updated"); } catch (TaskNotFoundException e) { String errorMsg = "Unable to update task: " + e.getTask().getHref() + ". Description: " + e.getMessage(); updateErrorTaskOnInstall(tierInstance, claudiaData.getVdc(), task, errorMsg, e); } catch (Exception e) { String errorMsg = "Unexpected error updating productInstance. Description:" + e.getMessage(); updateErrorTaskOnInstall(tierInstance, claudiaData.getVdc(), task, errorMsg, e); } finally { notifyTask(callback, task); } } public void delete(ClaudiaData claudiaData, TierInstance tierInstance, EnvironmentInstance envInstance, Task task, String callback) { try { tierInstanceManager.delete(claudiaData, tierInstance, envInstance); updateSuccessTask(task, tierInstance); log.info("The Tier Instance " + tierInstance.getName() + " has been CORRECTLY deleted"); } catch (InfrastructureException e) { String errorMsg = " An error has ocurred in the process of destroying VM "; updateErrorTaskOnInstall(tierInstance, claudiaData.getVdc(), task, errorMsg, e); } catch (TaskNotFoundException e) { String errorMsg = "Unable to update task: " + e.getTask().getHref() + ". Description: " + e.getMessage(); updateErrorTaskOnInstall(tierInstance, claudiaData.getVdc(), task, errorMsg, e); } catch (InvalidEntityException e) { String errorMsg = "Unable to update the tier Instance. Description: " + e.getMessage(); updateErrorTaskOnInstall(tierInstance, claudiaData.getVdc(), task, errorMsg, e); } catch (Exception e) { String errorMsg = "Unexpected error removing VM: " + tierInstance + ". Description:" + e.getMessage(); updateErrorTaskOnInstall(tierInstance, claudiaData.getVdc(), task, errorMsg, e); } finally { notifyTask(callback, task); } } /** * Update the task with necessary information when the task is success. * * @param task * @param tierInstance * @throws TaskNotFoundException */ private void updateSuccessTask(Task task, TierInstance tierInstance) throws TaskNotFoundException { Task loadedTask; 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(TierInstance tierInstance, String vdc, Task task, String errorMsg, Throwable e) { updateErrorTask(tierInstance, vdc, 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(TierInstance tierInstance, String vdc, Task task, String message, Throwable t) { String aiResource = getUrl(tierInstance); task.setResult(new TaskReference(aiResource)); updateErrorTask(task, message, t); } private String getUrl(TierInstance tierInstance) { String path = MessageFormat.format(ENVIRONMENT_PATH, tierInstance.getName()); return propertiesProvider.getProperty(PAAS_MANAGER_URL) + path; } /* * 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 executing an Tier Instance action. See task " + task.getHref() + " for more information " + message); } private void notifyTask(String url, Task task) { if (!StringUtils.isEmpty(url)) { taskNotificator.notify(url, task); } } // ////////// I.O.C //////////// /** * @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 tierInstanceManager * the TierInstanceManager to set */ public void setTierInstanceManager(TierInstanceManager tierInstanceManager) { this.tierInstanceManager = tierInstanceManager; } }