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/*-
* ============LICENSE_START=======================================================
* ONAP : APP-C
* ================================================================================
* Copyright (C) 2017 AT&T Intellectual Property. 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.
* ============LICENSE_END=========================================================
*/
package org.onap.appc.seqgen.impl;
import org.onap.appc.domainmodel.lcm.VNFOperation;
import org.onap.appc.exceptions.APPCException;
import org.onap.appc.seqgen.SequenceGenerator;
public class SequenceGeneratorFactory {
private static class ReferenceHolder {
private static SequenceGeneratorFactory instance = new SequenceGeneratorFactory();
private ReferenceHolder(){
}
}
private SequenceGeneratorFactory(){
}
public static SequenceGeneratorFactory getInstance(){
return ReferenceHolder.instance;
}
public SequenceGenerator createSequenceGenerator(VNFOperation operation) throws APPCException {
switch (operation){
case Start:
return new StartSequenceGenerator();
case Stop:
return new StopSequenceGenerator();
default:
throw new APPCException("Sequence Generator does not support operation " + operation.name());
}
}
}
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