Java tutorial
/* * Copyright (c) 2010-2012 Thiago T. S * * This file is part of cloudoutput. * * cloudoutput is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * cloudoutput is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * For more information about your rights as a user of cloudoutput, * refer to the LICENSE file or see <http://www.gnu.org/licenses/>. */ package cloudoutput.dao; import cloudoutput.database.Database; import cloudoutput.database.HibernateUtil; import cloudoutput.models.ReportData; import java.util.List; import java.util.TreeMap; import java.util.logging.Level; import java.util.logging.Logger; import org.hibernate.HibernateException; import org.hibernate.Session; import org.hibernate.criterion.Restrictions; public class ReportDataDAO { public void insertHostData(String type, String datacenterName, int hostId, double time, double amount, int simulationId) { ReportData rd = new ReportData(type, datacenterName, null, hostId, null, time, amount, simulationId); Session session = HibernateUtil.getSession(); try { session.beginTransaction(); session.save(rd); session.getTransaction().commit(); } catch (HibernateException ex) { session.getTransaction().rollback(); Logger.getLogger(Database.class.getName()).log(Level.SEVERE, null, ex); } finally { HibernateUtil.closeSession(session); } } public TreeMap<Double, Double> getHostUsedResources(String type, String datacenterName, int hostId) { List<ReportData> dataList = null; Session session = HibernateUtil.getSession(); try { dataList = (List<ReportData>) session.createCriteria(ReportData.class) .add(Restrictions.conjunction().add(Restrictions.eq("type", type)) .add(Restrictions.eq("datacenterName", datacenterName)) .add(Restrictions.eq("hostId", hostId))) .list(); } catch (HibernateException ex) { Logger.getLogger(Database.class.getName()).log(Level.SEVERE, null, ex); } finally { HibernateUtil.closeSession(session); } TreeMap<Double, Double> hostUsedResources = new TreeMap<Double, Double>(); if (dataList == null) return hostUsedResources; for (ReportData rd : dataList) { if (type.equals("BANDWIDTH")) { //If bandwidth, convert from kbps to Mbps hostUsedResources.put(rd.getTime() / 60, rd.getAmount() / 1000); } else hostUsedResources.put(rd.getTime() / 60, rd.getAmount()); } return hostUsedResources; } /** * Inserts report data related to resource usage of a given virtual machine. * * @param type the type of the used resource. * @param customerName the name of the customer that owns the virtual machine. * @param vmId the id of the virtual machine. * @param time the instant of time which the data being inserted refers to. * @param amount the amount of resources being used by the virtual machine at * <code>time</code>. * @param simulationId the identification number of the simulation. * * @see ReportData * @since 1.0 */ public void insertVmData(String type, String customerName, int vmId, double time, double amount, int simulationId) { ReportData rd = new ReportData(type, null, customerName, null, vmId, time, amount, simulationId); Session session = HibernateUtil.getSession(); try { session.beginTransaction(); session.save(rd); session.getTransaction().commit(); } catch (HibernateException ex) { session.getTransaction().rollback(); Logger.getLogger(Database.class.getName()).log(Level.SEVERE, null, ex); } finally { HibernateUtil.closeSession(session); } } /** * Gets a report of resources usage of a given virtual machine. * * @param type the type of the used resource. * @param customerName the name of the customer that owns the virtual machine. * @param vmId the id of the virtual machine. * @return a map with values of time as keys and values of * used resources as values. * @see ReportData * @since 1.0 */ public TreeMap<Double, Double> getVmUsedResources(String type, String customerName, int vmId) { List<ReportData> dataList = null; Session session = HibernateUtil.getSession(); try { dataList = (List<ReportData>) session.createCriteria(ReportData.class) .add(Restrictions.conjunction().add(Restrictions.eq("type", type)) .add(Restrictions.eq("customerName", customerName)).add(Restrictions.eq("vmId", vmId))) .list(); } catch (HibernateException ex) { Logger.getLogger(Database.class.getName()).log(Level.SEVERE, null, ex); } finally { HibernateUtil.closeSession(session); } TreeMap<Double, Double> vmUsedResources = new TreeMap<Double, Double>(); if (dataList == null) return vmUsedResources; for (ReportData rd : dataList) { if (type.equals("BANDWIDTH")) { //If bandwidth, convert from kbps to Mbps vmUsedResources.put(rd.getTime() / 60, rd.getAmount() / 1000); } else { vmUsedResources.put(rd.getTime() / 60, rd.getAmount()); } } return vmUsedResources; } /** * Inserts report data related to overall resource usage of a given datacenter. * * @param type the type of the used resource. * @param datacenterName the name of the datacenter. * @param time the instant of time which the data being inserted refers to. * @param amount the overall amount of resources being used by * the datacenter at <code>time</code>. * @param simulationId the identification number of the simulation. * * @see ReportData * @since 1.0 */ public void insertDatacenterOverallData(String type, String datacenterName, double time, double amount, int simulationId) { ReportData rd = new ReportData(type, datacenterName, null, time, amount, simulationId); Session session = HibernateUtil.getSession(); try { session.beginTransaction(); session.save(rd); session.getTransaction().commit(); } catch (HibernateException ex) { session.getTransaction().rollback(); Logger.getLogger(Database.class.getName()).log(Level.SEVERE, null, ex); } finally { HibernateUtil.closeSession(session); } } /** * Gets a report of overall resources usage of a given datacenter. * * @param type the type of the used resource. * @param datacenterName the name of the datacenter. * @return a map with values of time as keys and values of * used resources as values. * @see ReportData * @since 1.0 */ public TreeMap<Double, Double> getDatacenterOverallData(String type, String datacenterName) { List<ReportData> dataList = null; Session session = HibernateUtil.getSession(); try { dataList = (List<ReportData>) session.createCriteria(ReportData.class) .add(Restrictions.conjunction().add(Restrictions.eq("type", type)) .add(Restrictions.eq("datacenterName", datacenterName)) .add(Restrictions.isNull("hostId"))) .list(); } catch (HibernateException ex) { Logger.getLogger(Database.class.getName()).log(Level.SEVERE, null, ex); } finally { HibernateUtil.closeSession(session); } TreeMap<Double, Double> overallUsedResources = new TreeMap<Double, Double>(); if (dataList == null) return overallUsedResources; for (ReportData rd : dataList) { if (type.equals("BANDWIDTH")) { //If bandwidth, convert from kbps to Mbps overallUsedResources.put(rd.getTime() / 60, rd.getAmount() / 1000); } else { overallUsedResources.put(rd.getTime() / 60, rd.getAmount()); } } return overallUsedResources; } /** * Inserts report data related to overall resource usage of a given customer. * * @param type the type of the used resource. * @param customerName the name of the customer. * @param time the instant of time which the data being inserted refers to. * @param amount the overall amount of resources being used by * the customer at <code>time</code>. * @param simulationId the identification number of the simulation. * * @see ReportData * @since 1.0 */ public void insertCustomerOverallData(String type, String customerName, double time, double amount, int simulationId) { ReportData rd = new ReportData(type, null, customerName, time, amount, simulationId); Session session = HibernateUtil.getSession(); try { session.beginTransaction(); session.save(rd); session.getTransaction().commit(); } catch (HibernateException ex) { session.getTransaction().rollback(); Logger.getLogger(Database.class.getName()).log(Level.SEVERE, null, ex); } finally { HibernateUtil.closeSession(session); } } /** * Gets a report of overall resources usage of a given customer. * * @param type the type of the used resource. * @param customerName the name of the customer. * @return a map with values of time as keys and values of * used resources as values. * @see ReportData * @since 1.0 */ public TreeMap<Double, Double> getCustomerOverallData(String type, String customerName) { List<ReportData> dataList = null; Session session = HibernateUtil.getSession(); try { dataList = (List<ReportData>) session.createCriteria(ReportData.class) .add(Restrictions.conjunction().add(Restrictions.eq("type", type)) .add(Restrictions.eq("customerName", customerName)).add(Restrictions.isNull("vmId"))) .list(); } catch (HibernateException ex) { Logger.getLogger(Database.class.getName()).log(Level.SEVERE, null, ex); } finally { HibernateUtil.closeSession(session); } TreeMap<Double, Double> overallUsedResources = new TreeMap<Double, Double>(); if (dataList == null) return overallUsedResources; for (ReportData rd : dataList) { if (type.equals("BANDWIDTH")) { //If bandwidth, convert from kbps to Mbps overallUsedResources.put(rd.getTime() / 60, rd.getAmount() / 1000); } else { overallUsedResources.put(rd.getTime() / 60, rd.getAmount()); } } return overallUsedResources; } /** * Inserts a list of report data into the database. * * @param dataList the list of report data to be inserted. * @see ReportData * @since 1.0 */ public void insertDataList(List<ReportData> dataList) { Session session = HibernateUtil.getSession(); try { session.beginTransaction(); for (ReportData data : dataList) { session.save(data); } session.getTransaction().commit(); } catch (HibernateException ex) { session.getTransaction().rollback(); Logger.getLogger(Database.class.getName()).log(Level.SEVERE, null, ex); } finally { HibernateUtil.closeSession(session); } } }