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path: root/feature-lifecycle/src/main/java/org/onap/policy/drools/lifecycle/LifecycleStateDefault.java
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/*
 * ============LICENSE_START=======================================================
 * ONAP
 * ================================================================================
 * Copyright (C) 2019 AT&T Intellectual Property. All rights reserved.
 * Modifications Copyright (C) 2019 Bell Canada.
 * ================================================================================
 * 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 java.util.List;
import lombok.NonNull;
import org.onap.policy.models.pdp.concepts.PdpStateChange;
import org.onap.policy.models.pdp.concepts.PdpUpdate;
import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicy;
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(LifecycleStateDefault.class);

    protected 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() {
        logger.warn("{}: stop", this);
        return true;
    }

    @Override
    public void shutdown() {
        logger.warn("{}: shutdown", this);
    }

    @Override
    public boolean status() {
        logger.warn("{}: status", this);
        return false;
    }

    @Override
    public boolean stateChange(@NonNull PdpStateChange change) {
        logger.warn("{}: state-change: {}", this, change);
        return false;
    }

    @Override
    public boolean update(@NonNull PdpUpdate update) {
        logger.warn("{}: update: {}", this, update);
        return false;
    }

    @Override
    public boolean isAlive() {
        return false;
    }

    @Override
    public boolean updatePolicies(List<ToscaPolicy> toscaPolicies) {
        logger.warn("{}: updatePolicies", this);
        return false;
    }
}