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The RabbitMQ Java client library allows Java applications to interface with RabbitMQ.
// Copyright (c) 2007-Present Pivotal Software, Inc. All rights reserved.
//
// This software, the RabbitMQ Java client library, is triple-licensed under the
// Mozilla Public License 1.1 ("MPL"), the GNU General Public License version 2
// ("GPL") and the Apache License version 2 ("ASL"). For the MPL, please see
// LICENSE-MPL-RabbitMQ. For the GPL, please see LICENSE-GPL2. For the ASL,
// please see LICENSE-APACHE2.
//
// This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND,
// either express or implied. See the LICENSE file for specific language governing
// rights and limitations of this software.
//
// If you have any questions regarding licensing, please contact us at
// [email protected].
package com.rabbitmq.client.impl;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.InputStream;
import java.util.Properties;
/**
* Publicly available Client Version information
*/
public class ClientVersion {
private static final Logger LOGGER = LoggerFactory.getLogger(ClientVersion.class);
public static final String VERSION;
static {
String version;
try {
version = getVersionFromPropertyFile();
} catch (Exception e1) {
LOGGER.warn("Couldn't get version from property file", e1);
try {
version = getVersionFromPackage();
} catch (Exception e2) {
LOGGER.warn("Couldn't get version with Package#getImplementationVersion", e1);
version = getDefaultVersion();
}
}
VERSION = version;
}
private static final String getVersionFromPropertyFile() throws Exception {
InputStream inputStream = ClientVersion.class.getClassLoader().getResourceAsStream("rabbitmq-amqp-client.properties");
Properties version = new Properties();
try {
version.load(inputStream);
} finally {
if (inputStream != null) {
inputStream.close();
}
}
if (version.getProperty("com.rabbitmq.client.version") == null) {
throw new IllegalStateException("Coulnd't find version property in property file");
}
return version.getProperty("com.rabbitmq.client.version");
}
private static final String getVersionFromPackage() {
if (ClientVersion.class.getPackage().getImplementationVersion() == null) {
throw new IllegalStateException("Couldn't get version with Package#getImplementationVersion");
}
return ClientVersion.class.getPackage().getImplementationVersion();
}
private static final String getDefaultVersion() {
return "0.0.0";
}
}