Mercurial > hg > release > thermostat-1.6
view agent/core/src/main/java/com/redhat/thermostat/utils/management/internal/AgentProxyClient.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 | 31f274ab27a5 |
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.utils.management.internal; import java.io.BufferedReader; import java.io.File; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.util.logging.Level; import java.util.logging.Logger; import com.redhat.thermostat.common.tools.ApplicationException; import com.redhat.thermostat.common.utils.LoggingUtils; class AgentProxyClient { private static final String SERVER_NAME = "thermostat-agent-proxy"; private static final Logger logger = LoggingUtils.getLogger(AgentProxyClient.class); private final int pid; private final ProcessCreator procCreator; private final File binPath; private final String username; AgentProxyClient(int pid, String user, File binPath) { this(pid, user, binPath, new ProcessCreator()); } AgentProxyClient(int pid, String user, File binPath, ProcessCreator procCreator) { this.pid = pid; this.binPath = binPath; this.procCreator = procCreator; this.username = user; } String getJMXServiceURL() throws IOException, ApplicationException { // Start the agent proxy Process proxy = null; Thread errReaderThread = null; try { proxy = startProcess(); final InputStream errStream = proxy.getErrorStream(); // Log stderr in a separate thread errReaderThread = new Thread(new Runnable() { @Override public void run() { BufferedReader errReader = new BufferedReader(new InputStreamReader(errStream)); String line; try { while ((line = errReader.readLine()) != null && !Thread.currentThread().isInterrupted()) { logger.info(line); } errReader.close(); } catch (IOException e) { logger.log(Level.WARNING, "Failed to read error stream", e); } } }); errReaderThread.start(); // Get JMX service URL from stdout BufferedReader outReader = new BufferedReader(new InputStreamReader(proxy.getInputStream())); String url = outReader.readLine(); // Wait for process to terminate try { proxy.waitFor(); } catch (InterruptedException e) { errReaderThread.interrupt(); Thread.currentThread().interrupt(); } outReader.close(); if (url == null) { throw new IOException("Failed to determine JMX service URL from proxy process"); } return url; } finally { if (proxy != null) { proxy.destroy(); } if (errReaderThread != null) { try { errReaderThread.join(); } catch (InterruptedException e) { errReaderThread.interrupt(); Thread.currentThread().interrupt(); } } } } private Process startProcess() throws IOException, ApplicationException { String serverPath = binPath + File.separator + SERVER_NAME; return procCreator.createAndRunProcess(new String[] { serverPath, String.valueOf(pid), username }); } static class ProcessCreator { Process createAndRunProcess(String[] args) throws IOException, ApplicationException { ProcessBuilder process = new ProcessBuilder(args); return process.start(); } } }