Mercurial > hg > thermostat
view agent/ipc/windows-named-pipes/server/src/main/java/com/redhat/thermostat/agent/ipc/winpipes/server/internal/AcceptThread.java @ 2589:a6ba41a449c8
[PATCH] Windows Named Pipes - preliminary implementation
A preliminary implementation of windows named pipes.
Does not set windoes named pipes as default IPC; remains TCP
reviewed-by: aazores, ebaron
review-thread: http://icedtea.classpath.org/pipermail/thermostat/2017-February/022126.html
author | Simon Tooke <stooke@redhat.com> |
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date | Fri, 10 Feb 2017 15:52:51 -0500 |
parents | |
children | 2885a4a290d0 |
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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.agent.ipc.winpipes.server.internal; import java.io.IOException; import java.util.concurrent.ExecutorService; import java.util.logging.Level; import java.util.logging.Logger; import com.redhat.thermostat.agent.ipc.winpipes.common.internal.MessageLimits; import com.redhat.thermostat.agent.ipc.winpipes.common.internal.WinPipe; import com.redhat.thermostat.common.utils.LoggingUtils; class AcceptThread extends Thread { private static final Logger logger = LoggingUtils.getLogger(AcceptThread.class); private final ExecutorService execService; private final WinPipe pipe; private final WinPipesServerChannelImpl channel; // buffer size private static final int BUFSIZE = new MessageLimits().getBufferSize(); // number of simulataneous clients private final int NUM_INSTANCES = 1; private final WindowsEventSelector selector; // array of all pipe instances private final ClientPipeInstance[] instances; private boolean shutdown; AcceptThread(WinPipesServerChannelImpl channel, ExecutorService execService) { this.channel = channel; this.execService = execService; this.pipe = channel.getPipe(); this.shutdown = false; this.selector = new WindowsEventSelector(NUM_INSTANCES); this.instances = new ClientPipeInstance[NUM_INSTANCES]; } private void createInstances() throws IOException { logger.info("AcceptThread '" + pipe.getPipeName() + "' creating " + NUM_INSTANCES + " pipe instances"); for (int i = 0; i < NUM_INSTANCES && !shutdown; i++) { final ClientPipeInstance pi = new ClientPipeInstance(pipe.getPipeName(), NUM_INSTANCES, BUFSIZE, execService, channel.getCallbacks()); instances[i] = pi; pi.connectToNewClient(); logger.fine("AcceptThread '" + pipe.getPipeName() + "' created " + pi); } } @Override public void run() { try { createInstances(); logger.info("AcceptThread '" + pipe.getPipeName() + "' Ready to accept client pipe connections"); // normally usage would be to add on an enqueu and remove on a operation complete, // but we reuse the events here to save cycles for (final ClientPipeInstance pi : instances) { selector.add(pi.getReadHandler()); selector.add(pi.getWriteHandler()); } // main loop while (!shutdown) { WindowsEventSelector.EventHandler pi = selector.waitForEvent(); pi.processEvent(); } } catch (IOException e) { logger.log(Level.SEVERE, "Error occurred during selection", e); shutdown = true; } finally { logger.info("Shutting down"); for (ClientPipeInstance pi : instances) { try { pi.close(); } catch (IOException e) { logger.log(Level.SEVERE, "Error occurred during close() of " + pi.getName(), e); } selector.remove(pi.getReadHandler()); selector.remove(pi.getWriteHandler()); } execService.shutdown(); } } void shutdown() throws IOException { this.shutdown = true; // Interrupt accept thread this.interrupt(); try { this.join(); } catch (InterruptedException e) { Thread.currentThread().interrupt(); } } boolean isShutdown() { return shutdown; } }