Mercurial > hg > release > thermostat-1.6
view storage/core/src/main/java/com/redhat/thermostat/storage/core/VmBoundaryPojoGetter.java @ 2049:a92d602216ad
Update copyright license headers for 2017
PR3290
Reviewed-by: jerboaa
Review-thread: http://icedtea.classpath.org/pipermail/thermostat/2017-January/021974.html
author | Andrew Azores <aazores@redhat.com> |
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date | Tue, 17 Jan 2017 12:19:56 -0500 |
parents | 31f274ab27a5 |
children |
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/* * Copyright 2012-2017 Red Hat, Inc. * * This file is part of Thermostat. * * Thermostat 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 2, or (at your * option) any later version. * * Thermostat 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. * * You should have received a copy of the GNU General Public License * along with Thermostat; see the file COPYING. If not see * <http://www.gnu.org/licenses/>. * * Linking this code with other modules is making a combined work * based on this code. Thus, the terms and conditions of the GNU * General Public License cover the whole combination. * * As a special exception, the copyright holders of this code give * you permission to link this code with independent modules to * produce an executable, regardless of the license terms of these * independent modules, and to copy and distribute the resulting * executable under terms of your choice, provided that you also * meet, for each linked independent module, the terms and conditions * of the license of that module. An independent module is a module * which is not derived from or based on this code. If you modify * this code, you may extend this exception to your version of the * library, but you are not obligated to do so. If you do not wish * to do so, delete this exception statement from your version. */ package com.redhat.thermostat.storage.core; import java.util.logging.Level; import java.util.logging.Logger; import com.redhat.thermostat.common.utils.LoggingUtils; import com.redhat.thermostat.storage.model.TimeStampedPojo; public class VmBoundaryPojoGetter <T extends TimeStampedPojo> { // QUERY %s WHERE 'agentId' = ?s AND \ // 'vmId' = ?s \ // SORT 'timeStamp' DSC \ // LIMIT 1 public static final String DESC_NEWEST_VM_STAT = "QUERY %s " + "WHERE '" + Key.AGENT_ID.getName() + "' = ?s " + "AND '" + Key.VM_ID.getName() + "' = ?s " + "SORT '" + Key.TIMESTAMP.getName() + "' DSC " + "LIMIT 1"; // QUERY %s WHERE 'agentId' = ?s AND \ // 'vmId' = ?s \ // SORT 'timeStamp' ASC \ // LIMIT 1 public static final String DESC_OLDEST_VM_STAT = "QUERY %s " + "WHERE '" + Key.AGENT_ID.getName() + "' = ?s " + "AND '" + Key.VM_ID.getName() + "' = ?s " + "SORT '" + Key.TIMESTAMP.getName() + "' ASC " + "LIMIT 1"; private static final Logger logger = LoggingUtils.getLogger(VmBoundaryPojoGetter.class); private final Storage storage; private final Category<T> cat; private final String queryNewest; private final String queryOldest; public VmBoundaryPojoGetter(Storage storage, Category<T> cat) { this.storage = storage; this.cat = cat; this.queryNewest = String.format(DESC_NEWEST_VM_STAT, cat.getName()); this.queryOldest = String.format(DESC_OLDEST_VM_STAT, cat.getName()); } public T getNewestStat(VmRef ref) { return runAgentAndVmIdQuery(ref, queryNewest); } public T getOldestStat(VmRef ref) { return runAgentAndVmIdQuery(ref, queryOldest); } private T runAgentAndVmIdQuery(final VmRef ref, final String descriptor) { StatementDescriptor<T> desc = new StatementDescriptor<>(cat, descriptor); PreparedStatement<T> prepared; try { prepared = storage.prepareStatement(desc); prepared.setString(0, ref.getHostRef().getAgentId()); prepared.setString(1, ref.getVmId()); Cursor<T> cursor = prepared.executeQuery(); if (cursor.hasNext()) { return cursor.next(); } } catch (DescriptorParsingException e) { logger.log(Level.SEVERE, "Preparing stmt '" + desc + "' failed!", e); } catch (StatementExecutionException e) { logger.log(Level.SEVERE, "Executing stmt '" + desc + "' failed!", e); } return null; } //Package private for testing String getNewestQueryDesc() { return queryNewest; } String getOldestQueryDesc() { return queryOldest; } }