Mercurial > hg > release > thermostat-1.2
view thread/client-common/src/main/java/com/redhat/thermostat/thread/client/common/collector/impl/ThreadMXBeanCollector.java @ 1623:b1306c7c7422
Thread monitor improvements part I
review-thread: http://icedtea.classpath.org/pipermail/thermostat/2014-December/012136.html
reviewed-by: omajid, jkang
author | Mario Torre <neugens.limasoftware@gmail.com> |
---|---|
date | Thu, 11 Dec 2014 11:44:42 +0100 |
parents | 32255ddb2c4c |
children | 00b472cd9101 |
line wrap: on
line source
/* * Copyright 2012-2014 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.thread.client.common.collector.impl; import com.redhat.thermostat.client.command.RequestQueue; import com.redhat.thermostat.common.command.Request; import com.redhat.thermostat.common.command.Request.RequestType; import com.redhat.thermostat.common.command.RequestResponseListener; import com.redhat.thermostat.common.command.Response; import com.redhat.thermostat.common.model.Range; import com.redhat.thermostat.common.utils.LoggingUtils; import com.redhat.thermostat.storage.core.HostRef; import com.redhat.thermostat.storage.core.VmRef; import com.redhat.thermostat.storage.core.experimental.statement.ResultHandler; import com.redhat.thermostat.storage.dao.AgentInfoDAO; import com.redhat.thermostat.thread.client.common.collector.ThreadCollector; import com.redhat.thermostat.thread.collector.HarvesterCommand; import com.redhat.thermostat.thread.dao.ThreadDao; import com.redhat.thermostat.thread.model.SessionID; import com.redhat.thermostat.thread.model.ThreadHarvestingStatus; import com.redhat.thermostat.thread.model.ThreadSession; import com.redhat.thermostat.thread.model.ThreadState; import com.redhat.thermostat.thread.model.ThreadSummary; import com.redhat.thermostat.thread.model.VmDeadLockData; import java.net.InetSocketAddress; import java.util.List; import java.util.concurrent.CountDownLatch; import java.util.logging.Level; import java.util.logging.Logger; import org.osgi.framework.BundleContext; import org.osgi.framework.ServiceReference; public class ThreadMXBeanCollector implements ThreadCollector { private static final Range<Long> FULL_RANGE = new Range<>(0l, Long.MAX_VALUE); private static final int ALL = -1; private static final int FIRST = 1; private static final String CMD_CHANNEL_ACTION_NAME = "thread-harvester"; private static final Logger logger = LoggingUtils.getLogger(ThreadMXBeanCollector.class); private AgentInfoDAO agentDao; private ThreadDao threadDao; private BundleContext context; private VmRef ref; public ThreadMXBeanCollector(BundleContext context, VmRef ref) { this.context = context; this.ref = ref; } public void setThreadDao(ThreadDao threadDao) { this.threadDao = threadDao; } public void setAgentInfoDao(AgentInfoDAO agentDao) { this.agentDao = agentDao; } Request createRequest() { HostRef targetHostRef = ref.getHostRef(); InetSocketAddress target = agentDao.getAgentInformation(targetHostRef).getRequestQueueAddress(); Request harvester = new Request(RequestType.RESPONSE_EXPECTED, target); harvester.setReceiver(HarvesterCommand.RECEIVER); return harvester; } @Override public boolean startHarvester() { Request harvester = createRequest(); harvester.setParameter(Request.ACTION, CMD_CHANNEL_ACTION_NAME); harvester.setParameter(HarvesterCommand.class.getName(), HarvesterCommand.START.name()); harvester.setParameter(HarvesterCommand.VM_ID.name(), ref.getVmId()); harvester.setParameter(HarvesterCommand.VM_PID.name(), String.valueOf(ref.getPid())); return postAndWait(harvester); } @Override public boolean stopHarvester() { Request harvester = createRequest(); harvester.setParameter(Request.ACTION, CMD_CHANNEL_ACTION_NAME); harvester.setParameter(HarvesterCommand.class.getName(), HarvesterCommand.STOP.name()); harvester.setParameter(HarvesterCommand.VM_ID.name(), ref.getVmId()); boolean result = postAndWait(harvester); return result; } @Override public boolean isHarvesterCollecting() { ThreadHarvestingStatus status = threadDao.getLatestHarvestingStatus(ref); if (status == null) { return false; } return status.isHarvesting(); } @Override public List<ThreadSession> getThreadSessions(Range<Long> range) { return threadDao.getSessions(ref, range, ALL, ThreadDao.Sort.ASCENDING); } @Override public SessionID getLastThreadSession() { List<ThreadSession> sessions = threadDao.getSessions(ref, FULL_RANGE, FIRST, ThreadDao.Sort.DESCENDING); return sessions.isEmpty() ? null : new SessionID(sessions.get(0).getSession()); } @Override public ThreadSummary getLatestThreadSummary(SessionID session) { List<ThreadSummary> summaries = threadDao.getSummary(ref, session, new Range<>(0l, Long.MAX_VALUE), 1); ThreadSummary summary = null; if (summaries.isEmpty()) { // default to all 0 summary = new ThreadSummary(); } else { summary = summaries.get(0); } return summary; } @Override public Range<Long> getThreadRange(SessionID session) { final long[] timestamps = new long[2]; timestamps[0] = 0l; timestamps[1] = Long.MAX_VALUE; threadDao.getThreadStates(ref, session, new ResultHandler<ThreadState>() { @Override public void onResult(ThreadState result) { timestamps[1] = result.getTimeStamp(); } }, FULL_RANGE, FIRST, ThreadDao.Sort.DESCENDING); threadDao.getThreadStates(ref, session, new ResultHandler<ThreadState>() { @Override public void onResult(ThreadState result) { timestamps[0] = result.getTimeStamp(); } }, FULL_RANGE, FIRST, ThreadDao.Sort.ASCENDING); return new Range<>(timestamps[0], timestamps[1]); } @Override public void getThreadStates(SessionID session, ResultHandler<ThreadState> handler, Range<Long> range) { threadDao.getThreadStates(ref, session, handler, range, ALL, ThreadDao.Sort.ASCENDING); } @Override public List<ThreadSummary> getThreadSummary(SessionID session, Range<Long> range) { List<ThreadSummary> summary = threadDao.getSummary(ref, session, range, Integer.MAX_VALUE); return summary; } @Override public VmDeadLockData getLatestDeadLockData() { return threadDao.loadLatestDeadLockStatus(ref); } @Override public void requestDeadLockCheck() { Request harvester = createRequest(); harvester.setParameter(Request.ACTION, CMD_CHANNEL_ACTION_NAME); harvester.setParameter(HarvesterCommand.class.getName(), HarvesterCommand.FIND_DEADLOCKS.name()); harvester.setParameter(HarvesterCommand.VM_ID.name(), ref.getVmId()); harvester.setParameter(HarvesterCommand.VM_PID.name(), String.valueOf(ref.getPid())); postAndWait(harvester); } // @Override // public ThreadContentionSample getLatestContentionSample(ThreadHeader thread) { // return threadDao.getLatestContentionSample(thread); // } private boolean postAndWait(Request harvester) { final CountDownLatch latch = new CountDownLatch(1); final boolean[] result = new boolean[1]; harvester.addListener(new RequestResponseListener() { @Override public void fireComplete(Request request, Response response) { switch (response.getType()) { case OK: result[0] = true; break; default: break; } latch.countDown(); } }); try { enqueueRequest(harvester); latch.await(); } catch (CommandChannelException e) { logger.log(Level.WARNING, "Failed to enqueue request", e); } catch (InterruptedException ignore) {} return result[0]; } private void enqueueRequest(Request req) throws CommandChannelException { ServiceReference ref = context.getServiceReference(RequestQueue.class.getName()); if (ref == null) { throw new CommandChannelException("Cannot access command channel"); } RequestQueue queue = (RequestQueue) context.getService(ref); queue.putRequest(req); context.ungetService(ref); } @SuppressWarnings("serial") private class CommandChannelException extends Exception { public CommandChannelException(String message) { super(message); } } }