Mercurial > hg > release > thermostat-1.6
view vm-gc/command/src/main/java/com/redhat/thermostat/vm/gc/command/internal/GCCommand.java @ 2049:a92d602216ad
Update copyright license headers for 2017
PR3290
Reviewed-by: jerboaa
Review-thread: http://icedtea.classpath.org/pipermail/thermostat/2017-January/021974.html
author | Andrew Azores <aazores@redhat.com> |
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date | Tue, 17 Jan 2017 12:19:56 -0500 |
parents | fa302aa73bae |
children |
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/* * Copyright 2012-2017 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.vm.gc.command.internal; import java.util.concurrent.Semaphore; import java.util.concurrent.TimeUnit; import com.redhat.thermostat.client.cli.HostVMArguments; import com.redhat.thermostat.common.cli.AbstractCommand; import com.redhat.thermostat.common.cli.CommandContext; import com.redhat.thermostat.common.cli.CommandException; import com.redhat.thermostat.gc.remote.common.GCRequest; import com.redhat.thermostat.shared.locale.Translate; import com.redhat.thermostat.storage.core.HostRef; import com.redhat.thermostat.storage.core.VmId; import com.redhat.thermostat.storage.core.VmRef; import com.redhat.thermostat.storage.dao.AgentInfoDAO; import com.redhat.thermostat.storage.dao.VmInfoDAO; import com.redhat.thermostat.storage.model.AgentInformation; import com.redhat.thermostat.storage.model.VmInfo; import com.redhat.thermostat.storage.model.VmInfo.AliveStatus; import com.redhat.thermostat.vm.gc.command.locale.LocaleResources; public class GCCommand extends AbstractCommand { // The name as which this command gets registered static final String REGISTER_NAME = "gc"; private static final Translate<LocaleResources> translator = LocaleResources.createLocalizer(); private GCRequest request; private AgentInfoDAO agentInfoDAO; private VmInfoDAO vmInfoDAO; private final GCCommandListenerFactory listenerFactory; private GCCommandListener listener; private Semaphore servicesAvailable = new Semaphore(0); GCCommand(GCCommandListenerFactory listenerFactory) { this.listenerFactory = listenerFactory; } @Override public void run(CommandContext ctx) throws CommandException { waitForServices(500l); requireNonNull(vmInfoDAO, translator.localize(LocaleResources.VM_SERVICE_UNAVAILABLE)); requireNonNull(agentInfoDAO, translator.localize(LocaleResources.AGENT_SERVICE_UNAVAILABLE)); requireNonNull(request, translator.localize(LocaleResources.GCREQUEST_SERVICE_UNAVAILABLE)); listener = listenerFactory.createListener(ctx.getConsole().getOutput(), ctx.getConsole().getError()); HostVMArguments args = new HostVMArguments(ctx.getArguments(), false, true); VmId vmId = new VmId(args.getVM().getVmId()); attemptGC(vmId); } private void waitForServices(long timeout) throws CommandException { try { servicesAvailable.tryAcquire(timeout, TimeUnit.MILLISECONDS); } catch (InterruptedException e) { throw new CommandException(translator.localize(LocaleResources.COMMAND_INTERRUPTED)); } } private void attemptGC(VmId vmId) throws CommandException { VmInfo result = vmInfoDAO.getVmInfo(vmId); if (result == null) { throw new CommandException(translator.localize(LocaleResources.VM_NOT_FOUND, vmId.get())); } HostRef dummyRef = new HostRef(result.getAgentId(), "dummy"); AgentInformation agentInfo = agentInfoDAO.getAgentInformation(dummyRef); AliveStatus status = result.isAlive(agentInfo); if (status != AliveStatus.RUNNING) { throw new CommandException(translator.localize(LocaleResources.VM_NOT_ALIVE, vmId.get())); } sendGCRequest(new VmRef(dummyRef, result.getVmId(), result.getVmPid(), result.getVmName())); } private void sendGCRequest(VmRef vmRef) throws CommandException { request.sendGCRequestToAgent(vmRef, agentInfoDAO, listener); waitForListenerResponse(); } private void waitForListenerResponse() { try { listener.await(30_000L); } catch (InterruptedException e) { e.printStackTrace(); } } public void setServices(GCRequest request, AgentInfoDAO agentInfoDAO, VmInfoDAO vmInfoDAO) { this.request = request; this.agentInfoDAO = agentInfoDAO; this.vmInfoDAO = vmInfoDAO; if (request == null || agentInfoDAO == null || vmInfoDAO == null) { servicesUnavailable(); } else { servicesAvailable(); } } private void servicesAvailable() { this.servicesAvailable.release(); } private void servicesUnavailable() { this.servicesAvailable.drainPermits(); } }