Mercurial > hg > release > thermostat-0.4
view common/core/src/main/java/com/redhat/thermostat/common/dao/VmInfoDAOImpl.java @ 609:430be1123985
Implement Storage.findAllPojos() and findAllPojosFromCategory().
Reviewed-by: neugens
Review-thread: http://icedtea.classpath.org/pipermail/thermostat/2012-September/003184.html
author | Roman Kennke <rkennke@redhat.com> |
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date | Thu, 13 Sep 2012 17:13:25 +0200 |
parents | 55792b78bcc4 |
children | 891cb7a0de3a |
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/* * Copyright 2012 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.common.dao; import java.util.ArrayList; import java.util.Collection; import java.util.List; import com.redhat.thermostat.common.model.VmInfo; import com.redhat.thermostat.common.storage.Chunk; import com.redhat.thermostat.common.storage.Cursor; import com.redhat.thermostat.common.storage.Key; import com.redhat.thermostat.common.storage.Query; import com.redhat.thermostat.common.storage.Query.Criteria; import com.redhat.thermostat.common.storage.Storage; class VmInfoDAOImpl implements VmInfoDAO { private Storage storage; VmInfoDAOImpl(Storage storage) { this.storage = storage; } @Override public VmInfo getVmInfo(VmRef ref) { Query findMatchingVm = storage.createQuery() .from(vmInfoCategory) .where(Key.AGENT_ID, Criteria.EQUALS, ref.getAgent().getAgentId()) .where(Key.VM_ID, Criteria.EQUALS, ref.getId()); VmInfo result = storage.findPojo(findMatchingVm, VmInfo.class); if (result == null) { throw new DAOException("Unknown VM: host:" + ref.getAgent().getAgentId() + ";vm:" + ref.getId()); } return result; } @Override public Collection<VmRef> getVMs(HostRef host) { Query query = buildQuery(host); Cursor<VmInfo> cursor = storage.findAllPojos(query, VmInfo.class); return buildVMsFromQuery(cursor, host); } private Query buildQuery(HostRef host) { Query query = storage.createQuery() .from(vmInfoCategory) .where(Key.AGENT_ID, Criteria.EQUALS, host.getAgentId()); return query; } private Collection<VmRef> buildVMsFromQuery(Cursor<VmInfo> cursor, HostRef host) { List<VmRef> vmRefs = new ArrayList<VmRef>(); while (cursor.hasNext()) { VmInfo vmInfo = cursor.next(); VmRef vm = buildVmRefFromChunk(vmInfo, host); vmRefs.add(vm); } return vmRefs; } private VmRef buildVmRefFromChunk(VmInfo vmInfo, HostRef host) { Integer id = vmInfo.getVmId(); // TODO can we do better than the main class? String mainClass = vmInfo.getMainClass(); VmRef ref = new VmRef(host, id, mainClass); return ref; } @Override public long getCount() { return storage.getCount(vmInfoCategory); } @Override public void putVmInfo(VmInfo info) { storage.putPojo(vmInfoCategory, true, info); } @Override public void putVmStoppedTime(int vmId, long timestamp) { storage.updateChunk(makeStoppedChunk(vmId, timestamp)); } private Chunk makeStoppedChunk(int vmId, long stopTimeStamp) { Chunk chunk = new Chunk(VmInfoDAO.vmInfoCategory, false); chunk.put(Key.VM_ID, vmId); chunk.put(VmInfoDAO.stopTimeKey, stopTimeStamp); return chunk; } }