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/*
* ============LICENSE_START=======================================================
* ONAP
* ================================================================================
* Copyright (C) 2019 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.policy.drools.lifecycle;
import lombok.NonNull;
import org.onap.policy.models.pdp.enums.PdpState;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* Support class for default functionality for operational states.
*/
public abstract class LifecycleStateDefault extends LifecycleStateUnsupported {
private static final Logger logger = LoggerFactory.getLogger(LifecycleState.class);
public LifecycleStateDefault(LifecycleFsm manager) {
super(manager);
}
@Override
public boolean transitionToState(@NonNull LifecycleState newState) {
logger.info("{}: state-change from {} to {}", this, state(), newState.state());
synchronized (fsm) {
if (state() == newState.state()) {
return false;
}
fsm.transitionToAction(newState);
return true;
}
}
@Override
public boolean start() {
logger.warn("{}: start", this);
return false;
}
@Override
public boolean stop() {
synchronized (fsm) {
boolean success = fsm.statusAction(PdpState.TERMINATED);
success = fsm.stopAction() && success;
return transitionToState(new LifecycleStateTerminated(fsm)) && success;
}
}
@Override
public void shutdown() {
synchronized (fsm) {
stop();
fsm.shutdownAction();
}
}
@Override
public boolean isAlive() {
return true;
}
@Override
public boolean status() {
synchronized (fsm) {
return fsm.statusAction(state());
}
}
}
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