Mercurial > hg > release > thermostat-0.4
view common/core/src/main/java/com/redhat/thermostat/common/dao/HeapDAOImpl.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 |
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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.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; import java.util.ArrayList; import java.util.Collection; import java.util.logging.Level; import java.util.logging.Logger; import com.redhat.thermostat.common.heap.HeapDump; import com.redhat.thermostat.common.heap.ObjectHistogram; import com.redhat.thermostat.common.model.HeapInfo; 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 HeapDAOImpl implements HeapDAO { private static final Logger log = Logger.getLogger(HeapDAOImpl.class.getName()); private final Storage storage; HeapDAOImpl(Storage storage) { this.storage = storage; storage.createConnectionKey(heapInfoCategory); } @Override public void putHeapInfo(HeapInfo heapInfo, File heapDumpData, ObjectHistogram histogramData) throws IOException { heapInfo.setAgentId(storage.getAgentId()); String heapId = heapInfo.getAgentId() + "-" + heapInfo.getVmId() + "-" + heapInfo.getTimeStamp(); System.err.println("assigning heapId: " + heapId); heapInfo.setHeapId(heapId); String heapDumpId = "heapdump-" + heapId; String histogramId = "histogram-" + heapId; if (heapDumpData != null) { heapInfo.setHeapDumpId(heapDumpId); } if (histogramData != null) { heapInfo.setHistogramId(histogramId); } storage.putPojo(heapInfoCategory, false, heapInfo); if (heapDumpData != null) { storage.saveFile(heapDumpId, new FileInputStream(heapDumpData)); } if (histogramData != null) { ByteArrayOutputStream baos = new ByteArrayOutputStream(); try { ObjectOutputStream oos = new ObjectOutputStream(baos); oos.writeObject(histogramData); ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray()); storage.saveFile(histogramId, bais); } catch (IOException e) { e.printStackTrace(); log.log(Level.SEVERE, "Unexpected error while writing histogram", e); } } } @Override public Collection<HeapInfo> getAllHeapInfo(VmRef vm) { Query query = storage.createQuery() .from(heapInfoCategory) .where(Key.AGENT_ID, Criteria.EQUALS, vm.getAgent().getAgentId()) .where(Key.VM_ID, Criteria.EQUALS, vm.getId()); Cursor<HeapInfo> cursor = storage.findAllPojos(query, HeapInfo.class); Collection<HeapInfo> heapInfos = new ArrayList<>(); while (cursor.hasNext()) { heapInfos.add(cursor.next()); } return heapInfos; } @Override public InputStream getHeapDumpData(HeapInfo heapInfo) { return storage.loadFile(heapInfo.getHeapDumpId()); } @Override public ObjectHistogram getHistogram(HeapInfo heapInfo) { try { InputStream in = storage.loadFile(heapInfo.getHistogramId()); ObjectInputStream ois = new ObjectInputStream(in); return (ObjectHistogram) ois.readObject(); } catch (IOException | ClassNotFoundException e) { log.log(Level.SEVERE, "Unexpected error while reading histogram", e); return null; } } @Override public HeapInfo getHeapInfo(String heapId) { Query query = storage.createQuery() .from(heapInfoCategory) .where(heapIdKey, Criteria.EQUALS, heapId); HeapInfo found = null; try { found = storage.findPojo(query, HeapInfo.class); } catch (IllegalArgumentException iae) { /* * if the heap id is not found, we get a nice * IllegalArgumentException but check if the illegal argument * exception is caused by that before propagating it. */ if (!iae.getMessage().contains("invalid ObjectId")) { throw iae; } } return found; } @Override public HeapDump getHeapDump(HeapInfo heapInfo) { return new HeapDump(heapInfo, this); } }