Mercurial > hg > release > thermostat-0.15
view host-cpu/agent/src/main/java/com/redhat/thermostat/host/cpu/agent/internal/Activator.java @ 1247:352dd55544d0
Use WriterID service over Storage.get/setAgentId() (Part 2).
Reviewed-by: neugens, vanaltj
Review-thread: http://icedtea.classpath.org/pipermail/thermostat/2013-September/008098.html
PR1509
author | Severin Gehwolf <sgehwolf@redhat.com> |
---|---|
date | Mon, 02 Sep 2013 11:28:59 +0200 |
parents | ccac9bcabaa0 |
children |
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/* * Copyright 2012, 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.host.cpu.agent.internal; import java.util.Map; import java.util.concurrent.Executors; import java.util.concurrent.ScheduledExecutorService; import org.osgi.framework.BundleActivator; import org.osgi.framework.BundleContext; import org.osgi.framework.ServiceRegistration; import com.redhat.thermostat.backend.Backend; import com.redhat.thermostat.backend.BackendService; import com.redhat.thermostat.common.MultipleServiceTracker; import com.redhat.thermostat.common.MultipleServiceTracker.Action; import com.redhat.thermostat.common.Version; import com.redhat.thermostat.host.cpu.common.CpuStatDAO; import com.redhat.thermostat.storage.core.WriterID; public class Activator implements BundleActivator { private ScheduledExecutorService executor; private MultipleServiceTracker tracker; private HostCpuBackend backend; private ServiceRegistration<Backend> reg; @Override public void start(final BundleContext context) throws Exception { executor = Executors.newSingleThreadScheduledExecutor(); Class<?>[] deps = new Class<?>[] { BackendService.class, CpuStatDAO.class, WriterID.class, // Host cpu backend uses it }; tracker = new MultipleServiceTracker(context, deps, new Action() { @Override public void dependenciesAvailable(Map<String, Object> services) { CpuStatDAO cpuStatDao = (CpuStatDAO) services.get(CpuStatDAO.class.getName()); Version version = new Version(context.getBundle()); WriterID id = (WriterID) services.get(WriterID.class.getName()); backend = new HostCpuBackend(executor, cpuStatDao, version, id); reg = context.registerService(Backend.class, backend, null); } @Override public void dependenciesUnavailable() { if (backend.isActive()) { backend.deactivate(); } reg.unregister(); } }); tracker.open(); } @Override public void stop(BundleContext context) throws Exception { tracker.close(); } /* * For testing purposes only. */ HostCpuBackend getBackend() { return backend; } }