Mercurial > hg > release > thermostat-1.0
view client/command/src/main/java/com/redhat/thermostat/client/command/cli/PingCommand.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 | b9dc33ef549a |
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.client.command.cli; import java.io.PrintStream; import java.net.InetSocketAddress; import java.util.List; import java.util.concurrent.Semaphore; import org.osgi.framework.BundleContext; import org.osgi.framework.FrameworkUtil; import org.osgi.framework.ServiceReference; import com.redhat.thermostat.client.command.RequestQueue; import com.redhat.thermostat.client.command.internal.LocaleResources; import com.redhat.thermostat.common.cli.Arguments; import com.redhat.thermostat.common.cli.CommandContext; import com.redhat.thermostat.common.cli.CommandException; import com.redhat.thermostat.common.cli.AbstractCommand; import com.redhat.thermostat.common.command.Request; import com.redhat.thermostat.common.command.Request.RequestType; import com.redhat.thermostat.common.command.RequestResponseListener; import com.redhat.thermostat.common.command.Response; import com.redhat.thermostat.shared.locale.LocalizedString; import com.redhat.thermostat.shared.locale.Translate; import com.redhat.thermostat.storage.core.HostRef; import com.redhat.thermostat.storage.dao.AgentInfoDAO; import com.redhat.thermostat.storage.dao.HostInfoDAO; public class PingCommand extends AbstractCommand { private static final String PING_ACTION_NAME = "ping"; private static final Translate<LocaleResources> translator = LocaleResources.createLocalizer(); static class PongListener implements RequestResponseListener { private PrintStream out; private final Semaphore responseBarrier; private final Translate<LocaleResources> t; PongListener(PrintStream out, Semaphore responseBarrier, Translate<LocaleResources> t) { this.out = out; this.responseBarrier = responseBarrier; this.t = t; } @Override public void fireComplete(Request request, Response response) { switch (response.getType()) { case ERROR: out.println(t.localize(LocaleResources.COMMAND_PING_RESPONSE_ERROR, request.getTarget().toString()).getContents()); break; case AUTH_FAILED: out.println(t.localize(LocaleResources.COMMAND_PING_RESPONSE_AUTH_FAILED, request.getTarget().toString()).getContents()); break; case OK: // fallthrough case NOOP: out.println(t.localize(LocaleResources.COMMAND_PING_RESPONSE_OK, request.getTarget().toString()).getContents()); break; case NOK: out.println(t.localize(LocaleResources.COMMAND_PING_RESPONSE_REFUSED).getContents()); break; default: out.println(t.localize(LocaleResources.COMMAND_PING_RESPONSE_UNKNOWN).getContents()); break; } responseBarrier.release(); } } private final BundleContext context; public PingCommand() { this(FrameworkUtil.getBundle(PingCommand.class).getBundleContext()); } public PingCommand(BundleContext context) { this.context = context; } @Override public void run(CommandContext ctx) throws CommandException { PrintStream out = ctx.getConsole().getOutput(); String agentId = getAgentIDArgument(ctx.getArguments()); if (agentId == null) { printCustomMessageWithUsage(out, translator.localize(LocaleResources.COMMAND_PING_ARGUMENT)); return; } ServiceReference hostInfoDaoRef = context.getServiceReference(HostInfoDAO.class.getName()); if (hostInfoDaoRef == null) { throw new CommandException(translator.localize(LocaleResources.COMMAND_PING_NO_HOST_INFO_DAO)); } HostInfoDAO hostInfoDao = (HostInfoDAO) context.getService(hostInfoDaoRef); HostRef targetHostRef = getHostRef(hostInfoDao, agentId); context.ungetService(hostInfoDaoRef); if (targetHostRef == null) { printCustomMessageWithUsage(out, translator.localize(LocaleResources.COMMAND_PING_INVALID_HOST_ID)); return; } ServiceReference agentInfoDaoRef = context.getServiceReference(AgentInfoDAO.class.getName()); if (agentInfoDaoRef == null) { throw new CommandException(translator.localize(LocaleResources.COMMAND_PING_NO_AGENT_INFO_DAO)); } AgentInfoDAO agentInfoDao = (AgentInfoDAO) context.getService(agentInfoDaoRef); String address = agentInfoDao.getAgentInformation(targetHostRef).getConfigListenAddress(); context.ungetService(agentInfoDaoRef); String [] host = address.split(":"); InetSocketAddress target = new InetSocketAddress(host[0], Integer.parseInt(host[1])); Request ping = new Request(RequestType.RESPONSE_EXPECTED, target); ping.setParameter(Request.ACTION, PING_ACTION_NAME); ping.setReceiver("com.redhat.thermostat.agent.command.internal.PingReceiver"); final Semaphore responseBarrier = new Semaphore(0); ping.addListener(new PongListener(out, responseBarrier, translator)); ServiceReference queueRef = context.getServiceReference(RequestQueue.class.getName()); if (queueRef == null) { throw new CommandException(translator.localize(LocaleResources.COMMAND_PING_NO_REQUEST_QUEUE)); } RequestQueue queue = (RequestQueue) context.getService(queueRef); out.println(translator.localize(LocaleResources.COMMAND_PING_QUEUING_REQUEST, target.toString()).getContents()); queue.putRequest(ping); context.ungetService(queueRef); try { responseBarrier.acquire(); } catch (InterruptedException e) { Thread.currentThread().interrupt(); } } private String getAgentIDArgument(Arguments arguments) { List<String> args = arguments.getNonOptionArguments(); if (args.size() != 1) { return null; } return args.get(0); } private HostRef getHostRef(HostInfoDAO dao, String agentId) { HostRef targetHostRef = null; for (HostRef hostref : dao.getAliveHosts()) { if (agentId.equals(hostref.getAgentId())) { targetHostRef = hostref; break; } } return targetHostRef; } private void printCustomMessageWithUsage(PrintStream out, LocalizedString message) { out.println(message.getContents()); // FIXME add usage back out.println(getUsage()); return; } }