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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2010-2011 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * http://glassfish.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
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 */
package com.sun.jersey.server.impl;

import java.io.InputStream;
import java.util.Properties;

/**
 *
 * @author [email protected]
 */
public final class BuildId {
    private static String buildId = _initiateBuildId();
    
    private static String _initiateBuildId() {
        String id = "Jersey";

        final InputStream in = getIntputStream();
        if (in != null) {
            try {
                Properties p = new Properties();
                p.load(in);
                String _id = p.getProperty("Build-Id");
                if (_id != null)
                    id = id + ": " + _id;
            } catch (Exception e){
                // Ignore
            } finally {
                close(in);
            }
        }
        return id;
    }

    private static void close(InputStream in) {
        try {
            in.close();
        } catch (Exception ex) {
            // Ignore
        }
    }
    
    private static InputStream getIntputStream() {
        try {
            return BuildId.class.getResourceAsStream("build.properties");
        } catch (Exception ex) {
            return null;
        }
    }

    public static final String getBuildId() {
        return buildId;
    }
}