Mercurial > hg > release > thermostat-0.5
view system-backend/src/main/java/com/redhat/thermostat/backend/system/SystemBackend.java @ 892:4c8a876b9dc0
Create Host Memory agent and common bundles
This commit extracts Host Memory data collection from SystemBackend into
a host-memory-agent bundle. It also moves the MemoryStatDAO from
common-core into a host-memory-common bundle that registers the DAO once
Storage is available. This also removes the DAO from DAOFactory.
Reviewed-by: omajid
Review-thread: http://icedtea.classpath.org/pipermail/thermostat/2013-January/004994.html
author | Elliott Baron <ebaron@redhat.com> |
---|---|
date | Mon, 07 Jan 2013 15:46:47 -0500 |
parents | 3477dae0e6da |
children | 9e6bcfc40ea1 |
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/* * Copyright 2013 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.backend.system; import java.net.URISyntaxException; import java.util.Set; import java.util.Timer; import java.util.TimerTask; import java.util.concurrent.CopyOnWriteArraySet; import java.util.logging.Level; import java.util.logging.Logger; import sun.jvmstat.monitor.HostIdentifier; import sun.jvmstat.monitor.MonitorException; import sun.jvmstat.monitor.MonitoredHost; import com.redhat.thermostat.agent.JvmStatusListener; import com.redhat.thermostat.agent.JvmStatusNotifier; import com.redhat.thermostat.backend.Backend; import com.redhat.thermostat.backend.BackendID; import com.redhat.thermostat.backend.BackendsProperties; import com.redhat.thermostat.common.Clock; import com.redhat.thermostat.common.SystemClock; import com.redhat.thermostat.common.dao.HostInfoDAO; import com.redhat.thermostat.common.dao.NetworkInterfaceInfoDAO; import com.redhat.thermostat.common.dao.VmCpuStatDAO; import com.redhat.thermostat.common.utils.LoggingUtils; import com.redhat.thermostat.storage.model.NetworkInterfaceInfo; import com.redhat.thermostat.storage.model.VmCpuStat; import com.redhat.thermostat.utils.ProcDataSource; import com.redhat.thermostat.utils.SysConf; public class SystemBackend extends Backend implements JvmStatusNotifier, JvmStatusListener { private static final Logger logger = LoggingUtils.getLogger(SystemBackend.class); private HostInfoDAO hostInfos; private VmCpuStatDAO vmCpuStats; private NetworkInterfaceInfoDAO networkInterfaces; private final Set<Integer> pidsToMonitor = new CopyOnWriteArraySet<Integer>(); private long procCheckInterval = 1000; // TODO make this configurable. private Timer timer = null; private HostIdentifier hostId = null; private MonitoredHost host = null; private JvmStatHostListener hostListener; private final VmCpuStatBuilder vmCpuBuilder; private final HostInfoBuilder hostInfoBuilder; public SystemBackend() { super(new BackendID("System Backend", SystemBackend.class.getName())); setConfigurationValue(BackendsProperties.VENDOR.name(), "Red Hat, Inc."); setConfigurationValue(BackendsProperties.DESCRIPTION.name(), "Gathers basic information from the system"); setConfigurationValue(BackendsProperties.VERSION.name(), "0.5.0"); Clock clock = new SystemClock(); ProcessStatusInfoBuilder builder = new ProcessStatusInfoBuilder(new ProcDataSource()); long ticksPerSecond = SysConf.getClockTicksPerSecond(); ProcDataSource source = new ProcDataSource(); hostInfoBuilder = new HostInfoBuilder(source); int cpuCount = hostInfoBuilder.getCpuInfo().count; vmCpuBuilder = new VmCpuStatBuilder(clock, cpuCount, ticksPerSecond, builder); } @Override protected void setDAOFactoryAction() { hostInfos = df.getHostInfoDAO(); vmCpuStats = df.getVmCpuStatDAO(); networkInterfaces = df.getNetworkInterfaceInfoDAO(); hostListener = new JvmStatHostListener(df.getVmInfoDAO(), df.getVmMemoryStatDAO(), df.getVmGcStatDAO(), df.getVmClassStatsDAO(), getObserveNewJvm()); } @Override public synchronized boolean activate() { if (timer != null) { return true; } if (df == null) { throw new IllegalStateException("Cannot activate backend without DAOFactory."); } addJvmStatusListener(this); if (!getObserveNewJvm()) { logger.fine("not monitoring new vms"); } hostInfos.putHostInfo(hostInfoBuilder.build()); timer = new Timer(); timer.scheduleAtFixedRate(new TimerTask() { @Override public void run() { for (NetworkInterfaceInfo info: NetworkInfoBuilder.build()) { networkInterfaces.putNetworkInterfaceInfo(info); } for (Integer pid : pidsToMonitor) { if (vmCpuBuilder.knowsAbout(pid)) { VmCpuStat dataBuilt = vmCpuBuilder.build(pid); if (dataBuilt != null) { vmCpuStats.putVmCpuStat(dataBuilt); } } else { vmCpuBuilder.learnAbout(pid); } } } }, 0, procCheckInterval); try { hostId = new HostIdentifier((String) null); host = MonitoredHost.getMonitoredHost(hostId); host.addHostListener(hostListener); } catch (MonitorException me) { logger.log(Level.WARNING, "problems with connecting jvmstat to local machine", me); } catch (URISyntaxException use) { logger.log(Level.WARNING, "problems with connecting jvmstat to local machine", use); } return true; } @Override public synchronized boolean deactivate() { if (timer == null) { return true; } timer.cancel(); timer = null; removeJvmStatusListener(this); try { // remove all listener from the host listener hostListener.removeAllListeners(); host.removeHostListener(hostListener); } catch (MonitorException me) { logger.log(Level.INFO, "something went wrong in jvmstat's listening to this host"); } host = null; hostId = null; return true; } @Override public synchronized boolean isActive() { return (timer != null); } @Override public String getConfigurationValue(String key) { return null; } @Override public boolean attachToNewProcessByDefault() { return true; } @Override public void addJvmStatusListener(JvmStatusListener listener) { hostListener.addJvmStatusListener(listener); } @Override public void removeJvmStatusListener(JvmStatusListener listener) { hostListener.removeJvmStatusListener(listener); } @Override public void jvmStarted(int vmId) { if (getObserveNewJvm()) { pidsToMonitor.add(vmId); } } @Override public void jvmStopped(int vmId) { pidsToMonitor.remove(vmId); vmCpuBuilder.forgetAbout(vmId); } @Override public int getOrderValue() { return ORDER_DEFAULT_GROUP; } }