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/*-
* ============LICENSE_START=======================================================
* ONAP : APPC
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Copyright (C) 2017 Amdocs
* =============================================================================
* 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.
*
* ECOMP is a trademark and service mark of AT&T Intellectual Property.
* ============LICENSE_END=========================================================
*/
package org.openecomp.appc.client.impl.protocol;
import java.util.HashMap;
import java.util.Map;
public class ProtocolFactory {
private static ProtocolFactory instance;
private Map<ProtocolType,Protocol> protocols;
/**
* Singleton factory
*/
private ProtocolFactory(){
protocols = new HashMap<ProtocolType, Protocol>();
}
/**
* get factory instance
* @return factory instance
*/
public static synchronized ProtocolFactory getInstance(){
if (instance == null) {
instance = new ProtocolFactory();
}
return instance;
}
/**
* returns instantiated protocol object
* @param type of protocol object
* @return protocol object
*/
public Protocol getProtocolObject(ProtocolType type) throws ProtocolException {
Protocol protocol = protocols.get(type);
synchronized (this) {
if (protocol == null) {
switch (type) {
case SYNC:
throw new ProtocolException("Protocol SYNC is not implemented");
case ASYNC:
protocol = new AsyncProtocolImpl();
protocols.put(type, protocol);
break;
default:
throw new ProtocolException("Protocol type not found");
}
}
}
return protocol;
}
}
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