openmeetings-util/src/main/java/org/apache/openmeetings/util/OmVersion.java

/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License") +  you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.openmeetings.util;

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

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class OmVersion {
	private static final Logger log = LoggerFactory.getLogger(OmVersion.class);
	private static final int TOTAL_LENGTH = 78;
	private static String version = null;
	private static String revision = null;
	private static String buildDate = null;
	static {
		try {
			Properties props = new Properties();
			try (InputStream is = OmVersion.class.getResourceAsStream("version.properties")) {
				props.load(is);
			}
			version = props.getProperty("version");
			revision = props.getProperty("revision");
			buildDate = props.getProperty("date");
		} catch (Exception e) {
			log.error("Error", e);
		}
	}

	private OmVersion() {}

	public static String getVersion() {
		return version;
	}

	public static String getRevision() {
		return revision;
	}

	public static String getBuildDate() {
		return buildDate;
	}

	public static void getLine(StringBuilder sb, String text, char fill) {
		sb.append("\t#");
		int l = text.length();
		int headLength = (TOTAL_LENGTH - l) / 2;
		for (int i = 0; i < headLength; ++i) {
			sb.append(fill);
		}
		sb.append(text);
		for (int i = 0; i < (TOTAL_LENGTH - l - headLength); ++i) {
			sb.append(fill);
		}
		sb.append("#\n");
	}

	public static void logOMStarted() {
		StringBuilder sb = new StringBuilder("\n");
		getLine(sb, "", '#');
		getLine(sb, "Openmeetings is up", ' ');
		getLine(sb, getVersion() + " " + getRevision() + " " + getBuildDate(), ' ');
		getLine(sb, "and ready to use", ' ');
		getLine(sb, "", '#');
		log.debug("{}", sb);
	}
}