/*
* RED5 Open Source Flash Server - http://code.google.com/p/red5/
*
* Copyright 2006-2014 by respective authors (see below). All rights reserved.
*
* 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.
*/
package org.red5.server.api.stream.support;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import org.red5.server.api.scope.IScope;
import org.red5.server.api.stream.IServerStream;
import org.red5.server.stream.ServerStream;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Stream helper methods.
*
* @author The Red5 Project
* @author Steven Gong (steven.gong@gmail.com)
* @author Paul Gregoire (mondain@gmail.com)
*/
public abstract class StreamUtils {
private static final Logger logger = LoggerFactory.getLogger(StreamUtils.class);
/* Map to hold reference to the instanced server streams */
private static volatile ConcurrentMap<String, IServerStream> serverStreamMap = new ConcurrentHashMap<String, IServerStream>(16, 0.75f, 4);
/**
* Creates server stream
*
* @param scope Scope of stream
* @param name Name of stream
* @return IServerStream object
*/
public static IServerStream createServerStream(IScope scope, String name) {
logger.debug("Creating server stream: {} scope: {}", name, scope);
ServerStream stream = new ServerStream();
stream.setScope(scope);
stream.setName(name);
stream.setPublishedName(name);
//save to the list for later lookups
String key = scope.getName() + '/' + name;
serverStreamMap.put(key, stream);
return stream;
}
/**
* Looks up a server stream in the stream map. Null will be returned if the
* stream is not found.
*
* @param scope Scope of stream
* @param name Name of stream
* @return IServerStream object
*/
public static IServerStream getServerStream(IScope scope, String name) {
logger.debug("Looking up server stream: {} scope: {}", name, scope);
String key = scope.getName() + '/' + name;
if (serverStreamMap.containsKey(key)) {
return serverStreamMap.get(key);
} else {
logger.warn("Server stream not found with key: {}", key);
return null;
}
}
/**
* Puts a server stream in the stream map
*
* @param scope Scope of stream
* @param name Name of stream
* @param stream ServerStream object
*/
public static void putServerStream(IScope scope, String name, IServerStream stream) {
logger.debug("Putting server stream in the map - name: {} scope: {} stream: {}", new Object[] { name, scope, stream });
String key = scope.getName() + '/' + name;
if (!serverStreamMap.containsKey(key)) {
serverStreamMap.put(key, stream);
} else {
logger.warn("Server stream already exists in the map with key: {}", key);
}
}
/**
* Removes a server stream from the stream map
*
* @param scope Scope of stream
* @param name Name of stream
*/
public static void removeServerStream(IScope scope, String name) {
logger.debug("Removing server stream from the map - name: {} scope: {}", name, scope);
String key = scope.getName() + '/' + name;
if (serverStreamMap.containsKey(key)) {
serverStreamMap.remove(key);
} else {
logger.warn("Server stream did not exist in the map with key: {}", key);
}
}
}