Mercurial > hg > release > thermostat-0.5
view client/cli/src/main/java/com/redhat/thermostat/client/cli/internal/VMStatPrinter.java @ 894:0ba74f790a8a
Create VM Memory agent and common bundles
This commit extracts VM Memory data collection from SystemBackend and
related classes into a vm-memory-agent bundle. It also moves the
VmMemoryStatDAO from common-core into a vm-memory-common bundle that
registers the DAO once Storage is available. This also removes the DAO
from DAOFactory.
This also temporarily adds the vm-memory-common bundle as a dependency
to client-cli until my later dynamic vm-stat patch.
Reviewed-by: omajid
Review-thread: http://icedtea.classpath.org/pipermail/thermostat/2013-January/004995.html
author | Elliott Baron <ebaron@redhat.com> |
---|---|
date | Mon, 07 Jan 2013 15:50:03 -0500 |
parents | 9e6bcfc40ea1 |
children | 1e51015e63e5 |
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/* * Copyright 2012 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.cli.internal; import java.io.PrintStream; import java.text.DateFormat; import java.text.DecimalFormat; import java.util.Arrays; import java.util.Collections; import java.util.Date; import java.util.Iterator; import java.util.List; import java.util.NoSuchElementException; import com.redhat.thermostat.common.Size; import com.redhat.thermostat.common.cli.TableRenderer; import com.redhat.thermostat.common.dao.VmRef; import com.redhat.thermostat.common.locale.Translate; import com.redhat.thermostat.storage.model.TimeStampedPojo; import com.redhat.thermostat.storage.model.TimeStampedPojoComparator; import com.redhat.thermostat.storage.model.TimeStampedPojoCorrelator; import com.redhat.thermostat.storage.model.VmCpuStat; import com.redhat.thermostat.storage.model.VmMemoryStat; import com.redhat.thermostat.vm.cpu.common.VmCpuStatDAO; import com.redhat.thermostat.vm.memory.common.VmMemoryStatDAO; class VMStatPrinter { private static final Translate<LocaleResources> translator = LocaleResources.createLocalizer(); private static final String CPU_PERCENT = translator.localize(LocaleResources.COLUMN_HEADER_CPU_PERCENT); private static final String TIME = translator.localize(LocaleResources.COLUMN_HEADER_TIME); private VmRef vm; private VmCpuStatDAO vmCpuStatDAO; private VmMemoryStatDAO vmMemoryStatDAO; private PrintStream out; private TimeStampedPojoCorrelator correlator = new TimeStampedPojoCorrelator(2); private TableRenderer table; private int numSpaces; private long lastCpuStatTimeStamp = Long.MIN_VALUE; private long lastMemoryStatTimeStamp = Long.MIN_VALUE; VMStatPrinter(VmRef vm, VmCpuStatDAO vmCpuStatDAO, VmMemoryStatDAO vmMemoryStatDAO, PrintStream out) { this.vm = vm; this.vmCpuStatDAO = vmCpuStatDAO; this.vmMemoryStatDAO = vmMemoryStatDAO; this.out = out; } void printStats() { List<VmCpuStat> cpuStats = vmCpuStatDAO.getLatestVmCpuStats(vm, lastCpuStatTimeStamp); List<VmMemoryStat> memStats = vmMemoryStatDAO.getLatestVmMemoryStats(vm, lastMemoryStatTimeStamp); lastCpuStatTimeStamp = getLatestTimeStamp(lastCpuStatTimeStamp, cpuStats); lastMemoryStatTimeStamp = getLatestTimeStamp(lastMemoryStatTimeStamp, memStats); printStats(cpuStats, memStats); } void printUpdatedStats() { correlator.clear(); List<VmCpuStat> cpuStats = vmCpuStatDAO.getLatestVmCpuStats(vm, lastCpuStatTimeStamp); List<VmMemoryStat> memStats = vmMemoryStatDAO.getLatestVmMemoryStats(vm, lastMemoryStatTimeStamp); lastCpuStatTimeStamp = getLatestTimeStamp(lastCpuStatTimeStamp, cpuStats); lastMemoryStatTimeStamp = getLatestTimeStamp(lastMemoryStatTimeStamp, memStats); correlate(cpuStats, memStats); printUpdatedStatsImpl(); } private long getLatestTimeStamp(long currentTimeStamp, List<? extends TimeStampedPojo> list) { try { return Math.max(currentTimeStamp, Collections.max(list, new TimeStampedPojoComparator<>()).getTimeStamp()); } catch (NoSuchElementException listIsEmpty) { return currentTimeStamp; } } private void printStats(List<VmCpuStat> cpuStats, List<VmMemoryStat> memStats) { correlate(cpuStats, memStats); numSpaces = getNumSpaces(memStats); int numColumns = numSpaces + 2; table = new TableRenderer(numColumns); printHeaders(memStats, numSpaces, numColumns, table); printUpdatedStatsImpl(); } private void printStats(int numSpaces, TableRenderer table, Iterator<TimeStampedPojoCorrelator.Correlation> i) { TimeStampedPojoCorrelator.Correlation correlation = i.next(); VmCpuStat cpuStat = (VmCpuStat) correlation.get(0); DecimalFormat format = new DecimalFormat("#0.0"); String cpuLoad = cpuStat != null ? format.format(cpuStat.getCpuLoad()) : ""; DateFormat dateFormat = DateFormat.getTimeInstance(); String time = dateFormat.format(new Date(correlation.getTimeStamp())); String[] memoryUsage = getMemoryUsage((VmMemoryStat) correlation.get(1), numSpaces); String[] line = new String[numSpaces + 2]; System.arraycopy(memoryUsage, 0, line, 2, numSpaces); line[0] = time; line[1] = cpuLoad; table.printLine(line); } private void printHeaders(List<VmMemoryStat> memStats, int numSpaces, int numColumns, TableRenderer table) { String[] spacesNames = getSpacesNames(memStats, numSpaces); String[] headers = new String[numColumns]; headers[0] = TIME; headers[1] = CPU_PERCENT; System.arraycopy(spacesNames, 0, headers, 2, numSpaces); table.printLine(headers); } private String[] getMemoryUsage(VmMemoryStat vmMemoryStat, int numSpaces) { String[] memoryUsage = new String[numSpaces]; if (vmMemoryStat == null) { Arrays.fill(memoryUsage, ""); return memoryUsage; } int i = 0; for (VmMemoryStat.Generation gen : vmMemoryStat.getGenerations()) { for (VmMemoryStat.Space space : gen.getSpaces()) { memoryUsage[i] = Size.bytes(space.getUsed()).toString(); i++; } } return memoryUsage; } private String[] getSpacesNames(List<VmMemoryStat> memStats, int numSpaces) { if (numSpaces < 1) { return new String[0]; } String[] spacesNames = new String[numSpaces]; VmMemoryStat stat = memStats.get(0); int i = 0; for (VmMemoryStat.Generation gen : stat.getGenerations()) { for (VmMemoryStat.Space space : gen.getSpaces()) { spacesNames[i] = translator.localize(LocaleResources.COLUMN_HEADER_MEMORY_PATTERN, space.getName()); i++; } } return spacesNames; } private int getNumSpaces(List<VmMemoryStat> memStats) { if (memStats.size() < 1) { return 0; } VmMemoryStat stat = memStats.get(0); int numSpaces = 0; for (VmMemoryStat.Generation gen : stat.getGenerations()) { numSpaces += gen.getSpaces().length; } return numSpaces; } private void correlate(List<VmCpuStat> cpuStats, List<VmMemoryStat> memStats) { for(VmCpuStat cpuStat : cpuStats) { correlator.add(0, cpuStat); } for (VmMemoryStat memStat : memStats) { correlator.add(1, memStat); } } void printUpdatedStatsImpl() { Iterator<TimeStampedPojoCorrelator.Correlation> iterator = correlator.iterator(); while (iterator.hasNext()) { printStats(numSpaces, table, iterator); } table.render(out); } }