DefaultTransactionStatistics.java

/*
 * (C) Copyright 2011 Nuxeo SA (http://nuxeo.com/) and contributors.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Lesser General Public License
 * (LGPL) version 2.1 which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/lgpl.html
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * Contributors:
 *     matic
 */
package org.nuxeo.ecm.core.management.jtajca.internal;

import java.io.PrintWriter;
import java.io.StringWriter;
import java.text.DateFormat;
import java.util.Date;

import org.javasimon.Split;
import org.nuxeo.ecm.core.management.jtajca.TransactionStatistics;

/**
 * @author matic
 * 
 */
public class DefaultTransactionStatistics implements TransactionStatistics {

    protected final String id;

    protected long startTimestamp;

    protected Throwable startCapturedContext;

    protected String threadName;

    protected long endTimestamp;

    protected Throwable endCapturedContext;

    protected Status status;

    protected Split split;

    protected DefaultTransactionStatistics(Object key) {
        id = DefaultTransactionMonitor.id(key);
    }

    @Override
    public String getId() {
        return id.toString();
    }

    @Override
    public String getThreadName() {
        return threadName;
    }

    @Override
    public Status getStatus() {
        return status;
    }

    @Override
    public Date getStartDate() {
        return new Date(startTimestamp);
    }

    public String getStartCapturedContext() {
        return printCapturedContext(startCapturedContext);
    }

    @Override
    public String getStartCapturedContextMessage() {
        return printCapturedContext(startCapturedContext);
    }

    @Override
    public Date getEndDate() {
        return new Date(endTimestamp);
    }

    public Throwable getEndCapturedContext() {
        return endCapturedContext;
    }

    @Override
    public String getEndCapturedContextMessage() {
        if (endCapturedContext == null) {
            return "no context";
        }
        return printCapturedContext(endCapturedContext);
    }

    @Override
    public long getDuration() {
        return endTimestamp - startTimestamp;
    }

    @Override
    public boolean isEnded() {
        return endTimestamp != 0;
    }

    protected static String printCapturedContext(Throwable e) {
        StringWriter sw = new StringWriter();
        PrintWriter pw = new PrintWriter(sw, false);
        e.printStackTrace(pw);
        pw.flush();
        return sw.toString();
    }

    public void print(PrintWriter writer) {
        final String date = DateFormat.getDateInstance(DateFormat.MEDIUM).format(
                new Date(startTimestamp));
        final long duration = getDuration();
        if (duration > 0) {
            writer.write(String.format(
                    "Transaction has started at %s with a duration of %d ms and was in status %s\n%s",
                    date, duration, status, getEndCapturedContextMessage()));
        } else {
            writer.write(String.format(
                    "Transaction has started at %s and was in state %s\n%s",
                    date, status, getStartCapturedContextMessage()));
        }
        writer.flush();
    }

    @Override
    public String toString() {
        StringWriter sw = new StringWriter();
        print(new PrintWriter(sw));
        return sw.toString();
    }
}