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/*
* Copyright © 2017-2018 AT&T Intellectual Property.
* Modifications Copyright © 2018 IBM.
*
* 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.
*/
package org.onap.ccsdk.features.model.validator;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.apache.commons.lang3.StringUtils;
import org.onap.ccsdk.features.model.ConfigModelConstant;
import org.onap.ccsdk.features.model.ConfigModelException;
import org.onap.ccsdk.features.model.data.CapabilityAssignment;
import org.onap.ccsdk.features.model.data.NodeTemplate;
import org.onap.ccsdk.features.model.data.ResourceAssignment;
import org.onap.ccsdk.features.model.utils.TopologicalSortingUtils;
import org.onap.ccsdk.features.model.utils.TransformationUtils;
import com.att.eelf.configuration.EELFLogger;
import com.att.eelf.configuration.EELFManager;
public class ResourceAssignmentValidator {
private static EELFLogger logger = EELFManager.getInstance().getLogger(ResourceAssignmentValidator.class);
private List<ResourceAssignment> assignments;
private Map<String, ResourceAssignment> resourceAssignmentMap = new HashMap<>();
private StringBuilder validationMessage = new StringBuilder();
public ResourceAssignmentValidator(NodeTemplate nodeTemplate) throws ConfigModelException {
if (nodeTemplate != null && nodeTemplate.getCapabilities() != null) {
CapabilityAssignment capabilityAssignment =
nodeTemplate.getCapabilities().get(ConfigModelConstant.CAPABILITY_PROPERTY_MAPPING);
if (capabilityAssignment != null && capabilityAssignment.getProperties() != null) {
Object mappingObject =
capabilityAssignment.getProperties().get(ConfigModelConstant.CAPABILITY_PROPERTY_MAPPING);
if (mappingObject != null) {
String mappingContent = TransformationUtils.getJson(mappingObject);
if (StringUtils.isNotBlank(mappingContent)) {
this.assignments =
TransformationUtils.getListfromJson(mappingContent, ResourceAssignment.class);
} else {
validationMessage
.append(String.format("Failed to transform Mapping Content (%s) ", mappingContent));
throw new ConfigModelException(
String.format("Failed to transform Mapping Content (%s) ", mappingContent));
}
}
}
}
}
public ResourceAssignmentValidator(List<ResourceAssignment> assignments) {
this.assignments = assignments;
}
/**
* This is a validateResourceAssignment to validate the Topology Template
*
* @return boolean
* @throws ConfigModelException
*/
public boolean validateResourceAssignment() throws ConfigModelException {
if (assignments != null && !assignments.isEmpty()) {
validateDuplicateDictionaryKeys();
validateCyclicDependencty();
if (validationMessage.length() > 0) {
logger.error("Resourece Assignment Validation : {}", validationMessage);
throw new ConfigModelException("Resourece Assignment Validation :" + validationMessage.toString());
}
}
return true;
}
@SuppressWarnings("squid:S3776")
private void validateDuplicateDictionaryKeys() {
this.assignments.forEach(resourceMapping -> {
if (resourceMapping != null) {
if (!resourceAssignmentMap.containsKey(resourceMapping.getName())) {
resourceAssignmentMap.put(resourceMapping.getName(), resourceMapping);
} else {
validationMessage.append(String.format("Duplicate Assignment Template Key (%s) is Present",
resourceMapping.getName()));
}
}
});
if (!assignments.isEmpty()) {
Set<String> uniqueSet = new HashSet<>();
for (ResourceAssignment resourceAssignment : assignments) {
if (resourceAssignment != null) {
boolean added = uniqueSet.add(resourceAssignment.getDictionaryName());
if (!added) {
validationMessage.append(
String.format("Duplicate Assignment Dictionary Key (%s) present with Template Key (%s)",
resourceAssignment.getDictionaryName(), resourceAssignment.getName()));
}
}
}
}
}
private void validateCyclicDependencty() {
TopologicalSortingUtils<ResourceAssignment> topologySorting = new TopologicalSortingUtils<>();
this.resourceAssignmentMap.forEach((mappingKey, mapping) -> {
if (mapping != null) {
if (mapping.getDependencies() != null && !mapping.getDependencies().isEmpty()) {
for (String dependency : mapping.getDependencies()) {
topologySorting.add(resourceAssignmentMap.get(dependency), mapping);
}
} else {
topologySorting.add(null, mapping);
}
}
});
if (!topologySorting.isDag()) {
String graph = getTopologicalGraph(topologySorting);
validationMessage.append("Cyclic Dependency :" + graph);
}
}
public String getTopologicalGraph(TopologicalSortingUtils<ResourceAssignment> topologySorting) {
StringBuilder s = new StringBuilder();
if (topologySorting != null) {
Map<ResourceAssignment, List<ResourceAssignment>> neighbors = topologySorting.getNeighbors();
neighbors.forEach((v, vs) -> {
if (v == null) {
s.append("\n * -> [");
List<ResourceAssignment> links = vs;
for (ResourceAssignment resourceAssignment : links) {
s.append("(" + resourceAssignment.getDictionaryName() + ":" + resourceAssignment.getName()
+ "),");
}
s.append("]");
} else {
s.append("\n (" + v.getDictionaryName() + ":" + v.getName() + ") -> [");
List<ResourceAssignment> links = vs;
for (ResourceAssignment resourceAssignment : links) {
s.append("(" + resourceAssignment.getDictionaryName() + ":" + resourceAssignment.getName()
+ "),");
}
s.append("]");
}
});
}
return s.toString();
}
}
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