001/*
002 * (C) Copyright 2009 Nuxeo SA (http://nuxeo.com/) and others.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *     http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 *
016 * Contributors:
017 *     Thierry Delprat
018 */
019package org.nuxeo.ecm.platform.importer.log;
020
021import java.io.File;
022import java.io.FileWriter;
023import java.io.IOException;
024import java.io.Writer;
025
026import org.nuxeo.common.utils.Path;
027import org.nuxeo.runtime.api.Framework;
028
029public class PerfLogger {
030
031    protected String[] headers;
032
033    protected File logFile;
034
035    protected Writer logWriter;
036
037    protected static final String SEP = ";";
038
039    public PerfLogger(String[] headers) throws IOException {
040        this.headers = headers;
041        File home = Framework.getRuntime().getHome();
042        String logPath = new Path(home.getAbsolutePath()).append("perfLog_" + System.currentTimeMillis() + ".csv").toString();
043        logFile = new File(logPath);
044        logWriter = new FileWriter(logFile);
045        log(headers);
046    }
047
048    public void log(String[] data) throws IOException {
049        StringBuilder sb = new StringBuilder();
050        sb.append(System.currentTimeMillis());
051        for (String s : data) {
052            sb.append(SEP);
053            sb.append("\"");
054            sb.append(s);
055            sb.append("\"");
056        }
057        sb.append("\n");
058        logWriter.write(sb.toString());
059    }
060
061    public void log(Double[] data) throws IOException {
062        StringBuilder sb = new StringBuilder();
063        sb.append(System.currentTimeMillis());
064        for (Double d : data) {
065            sb.append(SEP);
066            sb.append(d.toString());
067        }
068        sb.append("\n");
069        logWriter.write(sb.toString());
070        logWriter.flush();
071    }
072
073    public void release() throws IOException {
074        if (logWriter != null) {
075            logWriter.flush();
076            logWriter.close();
077            logWriter = null;
078        }
079    }
080}