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/*-
* ============LICENSE_START=======================================================
* openECOMP : 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.openecomp.appc.lifecyclemanager.impl;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
import org.openecomp.appc.i18n.Msg;
import org.openecomp.appc.lifecyclemanager.LifecycleManager;
import org.openecomp.appc.lifecyclemanager.helper.MetadataReader;
import org.openecomp.appc.lifecyclemanager.objects.*;
import org.openecomp.appc.statemachine.*;
import org.openecomp.appc.statemachine.impl.StateMachineFactory;
import org.openecomp.appc.statemachine.objects.*;
import com.att.eelf.configuration.EELFLogger;
import com.att.eelf.configuration.EELFManager;
import com.att.eelf.i18n.EELFResourceManager;
public class LifecycleManagerImpl implements LifecycleManager{
private MetadataReader metadataReader;
private static Map<String,StateMachine> stateMachineMap = new ConcurrentHashMap<String,StateMachine>();
private static final EELFLogger logger = EELFManager.getInstance().getLogger(LifecycleManagerImpl.class);
private static EELFLogger errorLogger = EELFManager.getInstance().getErrorLogger();
public LifecycleManagerImpl(){
this.metadataReader = new MetadataReader();
}
@Override
public String getNextState(String vnfType, String currentState, String event) throws NoTransitionDefinedException,LifecycleException{
if (logger.isTraceEnabled()) {
logger.trace("Entering to getNextState with vnfType = "+ vnfType + ", currentState = " + currentState + ", event = " + event);
}
State nextState = null;
StateMachine machine = null;
StateMachineResponse response;
try {
machine = this.getStateMachine(vnfType);
response = machine.handleEvent(new State(currentState),new Event(event));
if(Response.NO_TRANSITION_DEFINED.equals(response.getResponse())){
errorLogger.error(EELFResourceManager.format(Msg.VF_ILLEGAL_COMMAND, vnfType,event,currentState));
throw new NoTransitionDefinedException("No Transition Defined for currentState = " + currentState + ", event = " + event,currentState,event);
}
nextState = response.getNextState();
} catch (InvalidInputException e) {
logger.error(e.getMessage());
throw new LifecycleException(e,currentState,event);
}
if (logger.isTraceEnabled()) {
logger.trace("Exiting from getNextState with (nextState = "+nextState.getStateName()!=null?nextState.getStateName():"null"+")");
}
return nextState.getStateName();
}
private StateMachine getStateMachine(String vnfType){
if (logger.isTraceEnabled()) {
logger.trace("Entering to getNextState with vnfType = "+ vnfType);
}
if(vnfType == null){
vnfType = "DEFAULT";
}
StateMachine machine = stateMachineMap.get(vnfType);
if(machine == null){
StateMachineMetadata metadata = metadataReader.readMetadata(vnfType);
machine = StateMachineFactory.getStateMachine(metadata);
stateMachineMap.put(vnfType,machine);
}
logger.trace("Exiting getStateMachine with (StateMachine = "+stateMachineMap.get(vnfType)!=null?stateMachineMap.get(vnfType).toString():"null"+")");
return stateMachineMap.get(vnfType);
}
}
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