Mercurial > hg > release > thermostat-1.0
view host-cpu/agent/src/main/java/com/redhat/thermostat/host/cpu/agent/internal/HostCpuBackend.java @ 1412:a0592d702416
Update copyright year in release branch.
reviewed-by: neugens
review-thread: http://icedtea.classpath.org/pipermail/thermostat/2014-June/009965.html
PR1821
author | Jon VanAlten <jon.vanalten@redhat.com> |
---|---|
date | Tue, 03 Jun 2014 11:55:56 -0600 |
parents | ad1f6b074c0c |
children |
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.host.cpu.agent.internal; import java.util.concurrent.ScheduledExecutorService; import java.util.concurrent.TimeUnit; import com.redhat.thermostat.agent.utils.ProcDataSource; import com.redhat.thermostat.agent.utils.SysConf; import com.redhat.thermostat.backend.BaseBackend; import com.redhat.thermostat.common.Clock; import com.redhat.thermostat.common.SystemClock; import com.redhat.thermostat.common.Version; import com.redhat.thermostat.host.cpu.common.CpuStatDAO; import com.redhat.thermostat.storage.core.WriterID; public class HostCpuBackend extends BaseBackend { private static final long PROC_CHECK_INTERVAL = 1000; // TODO make this configurable. private final CpuStatBuilder cpuStatBuilder; private CpuStatDAO cpuStats; private ScheduledExecutorService executor; private boolean started; public HostCpuBackend(ScheduledExecutorService executor, CpuStatDAO cpuStatDAO, Version version, final WriterID writerId) { super("Host CPU Backend", "Gathers CPU statistics about a host", "Red Hat, Inc.", version.getVersionNumber(), true); this.executor = executor; this.cpuStats = cpuStatDAO; Clock clock = new SystemClock(); long ticksPerSecond = SysConf.getClockTicksPerSecond(); ProcDataSource source = new ProcDataSource(); cpuStatBuilder = new CpuStatBuilder(clock, source, ticksPerSecond, writerId); } @Override public boolean activate() { if (!started) { executor.scheduleAtFixedRate(new Runnable() { @Override public void run() { if (!cpuStatBuilder.isInitialized()) { cpuStatBuilder.initialize(); } else { cpuStats.putCpuStat(cpuStatBuilder.build()); } } }, 0, PROC_CHECK_INTERVAL, TimeUnit.MILLISECONDS); started = true; } return true; } @Override public boolean deactivate() { executor.shutdown(); started = false; return true; } @Override public boolean isActive() { return started; } @Override public int getOrderValue() { return ORDER_CPU_GROUP; } }