org.apache.jackrabbit.oak.util.OakVersion Maven / Gradle / Ivy
/*
* 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.jackrabbit.oak.util;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;
import javax.annotation.Nonnull;
/**
* Provides version information about Oak.
*/
public final class OakVersion {
private static String version = null;
/**
* Returns the version of oak-core.
*
* @return the version (or "SNAPSHOT" when unknown)
*/
@Nonnull
public synchronized static String getVersion() {
if (version == null) {
version = "SNAPSHOT"; // fallback
InputStream stream = OakVersion.class
.getResourceAsStream("/META-INF/maven/org.apache.jackrabbit/oak-core/pom.properties");
if (stream != null) {
try {
try {
Properties properties = new Properties();
properties.load(stream);
version = properties.getProperty("version");
} finally {
stream.close();
}
} catch (IOException e) {
// ignore
}
}
}
return version;
}
}