Mercurial > hg > release > thermostat-1.0
view system-backend/src/main/java/com/redhat/thermostat/backend/system/HostInfoBuilder.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> |
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date | Tue, 03 Jun 2014 11:55:56 -0600 |
parents | 07becc24f34d |
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.backend.system; import java.io.BufferedReader; import java.io.IOException; import java.net.InetAddress; import java.net.UnknownHostException; import java.util.logging.Level; import java.util.logging.Logger; import com.redhat.thermostat.agent.utils.ProcDataSource; import com.redhat.thermostat.agent.utils.hostname.HostName; import com.redhat.thermostat.common.Size; import com.redhat.thermostat.common.Size.Unit; import com.redhat.thermostat.common.utils.LoggingUtils; import com.redhat.thermostat.storage.core.WriterID; import com.redhat.thermostat.storage.model.HostInfo; public class HostInfoBuilder { private static final Logger logger = LoggingUtils.getLogger(HostInfoBuilder.class); public static final String FALLBACK_LOCAL_HOSTNAME = "localhost"; static class HostCpuInfo { public final String model; public final int count; public HostCpuInfo(String model, int count) { this.count = count; this.model = model; } } static class HostOsInfo { public final String kernel; public final String distribution; public HostOsInfo(String kernel, String distribution) { this.kernel = kernel; this.distribution = distribution; } } static class HostMemoryInfo { public final Size totalMemory; public HostMemoryInfo(Size totalMemory) { this.totalMemory = totalMemory; } } private final ProcDataSource dataSource; private final WriterID writerId; public HostInfoBuilder(ProcDataSource dataSource, WriterID writerId) { this.dataSource = dataSource; this.writerId = writerId; } public HostInfo build() { String hostname = getHostName(); HostCpuInfo cpuInfo = getCpuInfo(); HostMemoryInfo memoryInfo = getMemoryInfo(); long totalMemorySize = (long) memoryInfo.totalMemory.convertTo(Unit.B).getValue(); HostOsInfo osInfo = getOsInfo(); String wId = writerId.getWriterID(); return new HostInfo(wId, hostname, osInfo.distribution, osInfo.kernel, cpuInfo.model, cpuInfo.count, totalMemorySize); } HostCpuInfo getCpuInfo() { final String KEY_PROCESSOR_ID = "processor"; final String KEY_CPU_MODEL = "model name"; int cpuCount = 0; String cpuModel = null; try (BufferedReader bufferedReader = new BufferedReader(dataSource.getCpuInfoReader())) { String line = null; while ((line = bufferedReader.readLine()) != null) { if (line.startsWith(KEY_PROCESSOR_ID)) { cpuCount++; } else if (line.startsWith(KEY_CPU_MODEL)) { cpuModel = line.substring(line.indexOf(":") + 1).trim(); } } } catch (IOException ioe) { logger.log(Level.WARNING, "unable to read cpu info"); } logger.log(Level.FINEST, "cpuModel: " + cpuModel); logger.log(Level.FINEST, "cpuCount: " + cpuCount); return new HostCpuInfo(cpuModel, cpuCount); } HostMemoryInfo getMemoryInfo() { Size totalMemory = null; try (BufferedReader bufferedReader = new BufferedReader(dataSource.getMemInfoReader())) { String[] memTotalParts = bufferedReader.readLine().split(" +"); long data = Long.valueOf(memTotalParts[1]); String units = memTotalParts[2]; if (units.equals("kB")) { totalMemory = new Size(data, Size.Unit.KiB); } } catch (IOException ioe) { logger.log(Level.WARNING, "unable to read memory info"); } logger.log(Level.FINEST, "totalMemory: " + totalMemory.toString()); return new HostMemoryInfo(totalMemory); } HostOsInfo getOsInfo() { return getOsInfo(DistributionInformation.get()); } HostOsInfo getOsInfo(DistributionInformation distroInfo) { String osName = distroInfo.getName() + " " + distroInfo.getVersion(); logger.log(Level.FINEST, "osName: " + osName); String osKernel = System.getProperty("os.name") + " " + System.getProperty("os.version"); logger.log(Level.FINEST, "osKernel: " + osKernel); return new HostOsInfo(osKernel, osName); } String getHostName() { String hostname = null; try { InetAddress localAddress = null; localAddress = InetAddress.getLocalHost(); hostname = getHostName(localAddress); } catch (UnknownHostException uhe) { logger.log(Level.WARNING, "unable to get hostname", uhe); } // if fails, try to get hostname without dns lookup if (hostname == null) { hostname = HostName.getLocalHostName(); } // still null, use localhost if (hostname == null) { hostname = FALLBACK_LOCAL_HOSTNAME; } return hostname; } String getHostName(InetAddress localAddress) { String hostname = localAddress.getCanonicalHostName(); logger.log(Level.FINEST, "hostname: " + hostname); return hostname; } }