Mercurial > hg > release > thermostat-1.0
view agent/cli/src/main/java/com/redhat/thermostat/agent/cli/impl/ServiceCommand.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 | 7caa7f9afb14 |
children |
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/* * 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.agent.cli.impl; import java.util.ArrayList; import java.util.List; import java.util.concurrent.Semaphore; import org.osgi.framework.BundleContext; import org.osgi.framework.ServiceReference; import com.redhat.thermostat.agent.cli.impl.locale.LocaleResources; import com.redhat.thermostat.common.ActionEvent; import com.redhat.thermostat.common.ActionListener; import com.redhat.thermostat.common.cli.AbstractCommand; import com.redhat.thermostat.common.cli.AbstractStateNotifyingCommand; import com.redhat.thermostat.common.cli.CommandContext; import com.redhat.thermostat.common.cli.CommandException; import com.redhat.thermostat.common.tools.ApplicationState; import com.redhat.thermostat.launcher.Launcher; import com.redhat.thermostat.shared.locale.Translate; /** * Simple service that allows starting Agent and DB Backend * in a single step. */ public class ServiceCommand extends AbstractCommand implements ActionListener<ApplicationState> { private static final Translate<LocaleResources> translator = LocaleResources.createLocalizer(); private List<ActionListener<ApplicationState>> listeners; private Semaphore agentBarrier = new Semaphore(0); private BundleContext context; private Launcher launcher; private boolean storageFailed = false; private CommandContext cmdCtx; public ServiceCommand(BundleContext context) { this.context = context; listeners = new ArrayList<>(); listeners.add(this); } @Override public void run(CommandContext ctx) throws CommandException { cmdCtx = ctx; ServiceReference launcherRef = context.getServiceReference(Launcher.class); if (launcherRef == null) { throw new CommandException(translator.localize(LocaleResources.LAUNCHER_UNAVAILABLE)); } launcher = (Launcher) context.getService(launcherRef); String[] storageStartArgs = new String[] { "storage", "--start" }; launcher.run(storageStartArgs, listeners, false); agentBarrier.acquireUninterruptibly(); if (storageFailed) { storageFailed = false; context.ungetService(launcherRef); throw new CommandException(translator.localize(LocaleResources.SERVICE_FAILED_TO_START_DB)); } String[] storageStopArgs = new String[] { "storage", "--stop" }; launcher.run(storageStopArgs, false); context.ungetService(launcherRef); cmdCtx = null; } @Override public void actionPerformed(ActionEvent<ApplicationState> actionEvent) { if (actionEvent.getSource() instanceof AbstractStateNotifyingCommand) { AbstractStateNotifyingCommand storage = (AbstractStateNotifyingCommand) actionEvent.getSource(); // Implementation detail: there is a single StorageCommand instance registered // as an OSGi service. We remove ourselves as listener so that we don't get // notified in the case that the command is invoked by some other means later. storage.getNotifier().removeActionListener(this); try { switch (actionEvent.getActionId()) { case START: // Payload is connection URL Object payload = actionEvent.getPayload(); if (payload == null || !(payload instanceof String)) { throw new CommandException(translator.localize(LocaleResources.UNEXPECTED_RESULT_STORAGE)); } String dbUrl = (String) payload; String[] agentArgs = new String[] {"agent", "-d", dbUrl}; cmdCtx.getConsole().getError().println(translator.localize(LocaleResources.STARTING_AGENT).getContents()); launcher.run(agentArgs, false); break; case FAIL: storageFailed = true; // Payload is exception payload = actionEvent.getPayload(); if (payload == null || !(payload instanceof Exception)) { throw new CommandException(translator.localize(LocaleResources.UNEXPECTED_RESULT_STORAGE)); } Exception ex = (Exception) payload; cmdCtx.getConsole().getError().println(ex.getMessage()); break; } } catch (CommandException e) { cmdCtx.getConsole().getError().println(e.getMessage()); } finally { agentBarrier.release(); } } } @Override public boolean isStorageRequired() { return false; } }