Mercurial > hg > release > thermostat-2.0
view common/portability/src/main/java/com/redhat/thermostat/common/portability/internal/linux/LinuxPortableHostImpl.java @ 2574:cd5b08c32052
[PATCH] refactoring portable code part 2
Move more of the Linux "/proc" code into the portability package.
Change pom files to detect linux using os name rather than os family.
Reviewed-by: ebaron, neugens
Review Thread:http://icedtea.classpath.org/pipermail/thermostat/2017-January/022054.html
author | Simon Tooke <stooke@redhat.com> |
---|---|
date | Mon, 30 Jan 2017 10:30:19 -0500 |
parents | system-backend/src/main/java/com/redhat/thermostat/backend/system/internal/linux/HostInfoBuilderImpl.java@b98beac5559c |
children | 65fcc9af086c |
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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.common.portability.internal.linux; 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.common.Size; import com.redhat.thermostat.common.Size.Unit; import com.redhat.thermostat.common.portability.HostName; import com.redhat.thermostat.common.portability.PortableHost; import com.redhat.thermostat.common.portability.PortableMemoryStat; import com.redhat.thermostat.common.portability.internal.UnimplementedError; import com.redhat.thermostat.common.portability.linux.ProcDataSource; import com.redhat.thermostat.common.utils.LoggingUtils; public class LinuxPortableHostImpl implements PortableHost { public static PortableHost INSTANCE = new LinuxPortableHostImpl(new ProcDataSource()); private static final Logger logger = LoggingUtils.getLogger(LinuxPortableHostImpl.class); private static final String FALLBACK_LOCAL_HOSTNAME = "localhost"; private final ProcDataSource dataSource; public static PortableHost createInstance() { return new LinuxPortableHostImpl(new ProcDataSource()); } static class HostCpuInfo { final String model; final int count; HostCpuInfo(String model, int count) { this.count = count; this.model = model; } } static class HostOsInfo { final String kernel; final String distribution; HostOsInfo(String kernel, String distribution) { this.kernel = kernel; this.distribution = distribution; } } LinuxPortableHostImpl(ProcDataSource dataSource) { this.dataSource = dataSource; } 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; 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); } Size getTotalMemorySize() { 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 != null ? totalMemory.toString() : "(null)")); return totalMemory; } @Override public String getHostName() { String hostname = null; try { InetAddress 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; } 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); } private HostOsInfo getOsInfo() { DistributionInformation distroInfo = DistributionInformation.get(); return getOsInfo(distroInfo); } @Override public String getOSName() { return getOsInfo().distribution; } @Override public String getOSVersion() { return getOsInfo().kernel; } @Override public String getCPUModel() { return getCpuInfo().model; } @Override public int getCPUCount() { return getCpuInfo().count; } @Override public long getTotalMemory() { return (long) getTotalMemorySize().convertTo(Unit.B).getValue(); } @Override public long getClockTicksPerSecond() { // TODO throw new UnimplementedError("getClockTicksPerSecond()"); } @Override public PortableMemoryStat getMemoryStat() { // TODO throw new UnimplementedError("getMemoryStat()"); } String getHostName(InetAddress localAddress) { String hostname = localAddress.getCanonicalHostName(); logger.log(Level.FINEST, "hostname: " + hostname); return hostname; } }