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/*-
* ============LICENSE_START=======================================================
* ONAP : APPC
* ================================================================================
* Copyright (C) 2017-2019 AT&T Intellectual Property. All rights reserved.
* ================================================================================
* Copyright (C) 2017 Amdocs
* ================================================================================
* Modifications (C) 2019 Ericsson
* =============================================================================
* 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.dg.dependencymanager.impl;
import org.onap.appc.dg.dependencymanager.DependencyManager;
import org.onap.appc.dg.dependencymanager.DependencyType;
import org.onap.appc.dg.dependencymanager.exception.DependencyModelNotFound;
import org.onap.appc.dg.flowbuilder.exception.InvalidDependencyModelException;
import org.onap.appc.dg.objects.DependencyTypes;
import org.onap.appc.dg.objects.VnfcDependencyModel;
import org.onap.appc.cache.MetadataCache;
import org.onap.appc.cache.impl.MetadataCacheFactory;
import org.onap.appc.metadata.objects.DependencyModelIdentifier;
import com.att.eelf.configuration.EELFLogger;
import com.att.eelf.configuration.EELFManager;
public class DependencyManagerImpl implements DependencyManager {
private static final EELFLogger logger = EELFManager.getInstance().getLogger(DependencyManagerImpl.class);
MetadataCache<DependencyModelIdentifier,VnfcDependencyModel> cache;
DependencyManagerImpl() {
cache = MetadataCacheFactory.getInstance().getMetadataCache();
}
public VnfcDependencyModel getVnfcDependencyModel(DependencyModelIdentifier modelIdentifier,
DependencyTypes dependencyType) throws InvalidDependencyModelException, DependencyModelNotFound {
if (logger.isTraceEnabled()) {
logger.trace("Entering to getVnfcDependencyModel with DependencyModelIdentifier = " + modelIdentifier
+ " , DependencyTypes = " + dependencyType);
}
VnfcDependencyModel dependencyModel = cache.getObject(modelIdentifier);
if (dependencyModel == null) {
logger.debug("Dependency model not found in cache, creating strategy for reading it");
DependencyType strategy = getStrategy(dependencyType);
// Throw exception if strategy could not be created because it is required
// to retrieve the vnfc dependency model later
if (strategy == null) {
throw new NullPointerException("Strategy is null. Failed to retrieve Vnfc Dependency Model");
}
dependencyModel = strategy.getVnfcDependencyModel(modelIdentifier);
}
if (logger.isTraceEnabled()) {
logger.trace("Returning getVnfcDependencyModel with dependency model = " + dependencyModel);
}
return dependencyModel;
}
private DependencyType getStrategy(DependencyTypes dependencyType) {
switch (dependencyType) {
case RESOURCE:
return new ResourceDependency();
}
return null;
}
}
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