Mercurial > hg > release > thermostat-1.2
view dev/perflog-analyzer/src/main/java/com/redhat/thermostat/dev/perf/logs/internal/LogAnalyzerImpl.java @ 1660:c6ae78b6f3ac
[Thermostat 1.2] Update copyright year to 2015
Reviewed-by: omajid
Review-thread: http://icedtea.classpath.org/pipermail/thermostat/2015-March/013127.html
PR2273
author | Severin Gehwolf <sgehwolf@redhat.com> |
---|---|
date | Wed, 11 Mar 2015 15:07:27 +0100 |
parents | 956c768fd1cd |
children |
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/* * Copyright 2012-2015 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.dev.perf.logs.internal; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.IOException; import java.util.Scanner; import com.redhat.thermostat.dev.perf.logs.LogAnalyzer; import com.redhat.thermostat.dev.perf.logs.StatsConfig; public class LogAnalyzerImpl implements LogAnalyzer { private static final QueueStatsFilter QUEUESTATS_FILTER = new QueueStatsFilter(); private static final StatementStatsFilter STATEMENTSTATS_FILTER = new StatementStatsFilter(); private static final LineStatsFilter<QueueStat, QueueStats> QUEUESTATS_BACKING_FILTER = new LogTagStatsFilterDecorator<>(QUEUESTATS_FILTER, LogTag.STORAGE_BACKING_PROXIED); private static final LineStatsFilter<QueueStat, QueueStats> QUEUESTATS_FRONT_FILTER = new LogTagStatsFilterDecorator<>(QUEUESTATS_FILTER, LogTag.STORAGE_FRONT_END); private static final LineStatsFilter<StatementStat, StatementStats> STATEMENTSTATS_BACKING_FILTER = new LogTagStatsFilterDecorator<>(STATEMENTSTATS_FILTER, LogTag.STORAGE_BACKING_PROXIED); private static final LineStatsFilter<StatementStat, StatementStats> STATEMENTSTATS_FRONT_FILTER = new LogTagStatsFilterDecorator<>(STATEMENTSTATS_FILTER, LogTag.STORAGE_FRONT_END); private final StatsConfig config; public LogAnalyzerImpl(StatsConfig config) { this.config = config; } @Override public void analyze() { StatsParser parser = StatsParserBuilder.build(); LogFileStats stats = null; try { stats = createLogFileStats(parser.getSharedState()); readFileCollectStats(parser, stats); } catch (ReadException e) { System.err.println(e.getMessage()); return; } printStats(stats); } private LogFileStats createLogFileStats(final SharedStatementState state) throws ReadException { LogFileStats stats = new LogFileStats(state, config); try { // register filters in this order since it influences printing. stats.registerStatsFilter(QUEUESTATS_FRONT_FILTER); stats.registerStatsFilter(STATEMENTSTATS_FRONT_FILTER); // show backing config only if so configured if (config.isShowBacking()) { stats.registerStatsFilter(QUEUESTATS_BACKING_FILTER); stats.registerStatsFilter(STATEMENTSTATS_BACKING_FILTER); } return stats; } catch (IllegalFilterException e) { throw new ReadException("Invalid filter", e); } } private void printStats(LogFileStats stats) { System.out.println("Statistics for log file: " + config.getLogFile().getAbsolutePath()); System.out.println("Total of " + stats.getTotalStats() + " records analyzed."); System.out.println(); for (LineStatsFilter<?, ?> filter: stats.getRegisteredFilters()) { LineStats<?> lineStats = stats.getStatsForBucket(filter); lineStats.printSummary(System.out); } } private void readFileCollectStats(final StatsParser parser, final LogFileStats stats) throws ReadException { try (FileReader freader = new FileReader(config.getLogFile()); Scanner scanner = new Scanner(freader)) { while (scanner.hasNextLine()) { String line = scanner.nextLine(); LineStat stat = parser.parse(line); if (stat != null) { stats.add(stat); } } } catch (FileNotFoundException e) { throw new ReadException("File not found: " + config.getLogFile().getAbsolutePath(), e); } catch (IOException e) { throw new ReadException("Error reading log file: " + config.getLogFile().getAbsolutePath(), e); } } private static class ReadException extends Exception { private static final long serialVersionUID = -5887794425580426338L; private ReadException(String msg, Throwable cause) { super(msg, cause); } } }