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The RabbitMQ AMQP 1.0 Java client library defines an API to access RabbitMQ
with the AMQP 1.0 protocol.
// Copyright (c) 2024 Broadcom. All Rights Reserved.
// The term "Broadcom" refers to Broadcom Inc. and/or its subsidiaries.
//
// Licensed 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.
//
// If you have any questions regarding licensing, please contact us at
// [email protected].
package com.rabbitmq.client.amqp.impl;
import java.io.InputStream;
import java.util.Map;
import java.util.Properties;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
final class ClientProperties {
private static final Logger LOGGER = LoggerFactory.getLogger(ClientProperties.class);
// We store the version property in an unusual way because relocating the package can rewrite the
// key in the property
// file, which results in spurious warnings being emitted at start-up.
// see https://github.com/rabbitmq/rabbitmq-java-client/issues/436
private static final char[] VERSION_PROPERTY =
new char[] {
'c', 'o', 'm', '.', 'r', 'a', 'b', 'b', 'i', 't', 'm', 'q', '.', 'c', 'l', 'i', 'e', 'n',
't', '.', 'a', 'm', 'q', 'p', '.', 'v', 'e', 'r', 's', 'i', 'o', 'n'
};
public static final String VERSION = getVersion();
public static final Map DEFAULT_CLIENT_PROPERTIES =
Map.of(
"product", "RabbitMQ",
"version", ClientProperties.VERSION,
"platform", "Java",
"copyright", "Copyright (c) 2024 Broadcom Inc. and/or its subsidiaries.",
"information",
"Licensed under the Apache License version 2. See https://www.rabbitmq.com/.");
private static String getVersion() {
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();
}
}
return version;
}
private static String getVersionFromPropertyFile() throws Exception {
InputStream inputStream =
ClientProperties.class
.getClassLoader()
.getResourceAsStream("rabbitmq-amqp-1-0-client.properties");
Properties version = new Properties();
try {
version.load(inputStream);
} finally {
if (inputStream != null) {
inputStream.close();
}
}
String propertyName = new String(VERSION_PROPERTY);
String versionProperty = version.getProperty(propertyName);
if (versionProperty == null) {
throw new IllegalStateException("Couldn't find version property in property file");
}
return versionProperty;
}
private static String getVersionFromPackage() {
if (ClientProperties.class.getPackage().getImplementationVersion() == null) {
throw new IllegalStateException("Couldn't get version with Package#getImplementationVersion");
}
return ClientProperties.class.getPackage().getImplementationVersion();
}
private static String getDefaultVersion() {
return "0.0.0";
}
private ClientProperties() {}
}