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package org.openecomp.sdc.be.components.impl.policy;
import org.apache.commons.collections.MapUtils;
import org.openecomp.sdc.be.datatypes.elements.PolicyTargetType;
import org.openecomp.sdc.be.model.PolicyDefinition;
import org.springframework.stereotype.Component;
import java.util.List;
import java.util.Map;
import java.util.function.UnaryOperator;
import static java.util.Collections.emptyList;
import static org.apache.commons.collections.CollectionUtils.isEmpty;
/**
* A Helper class which handles altering the targets state of a policy
*/
@Component
public class PolicyTargetsUpdater {
public void removeTarget(List<PolicyDefinition> policies, String targetId, PolicyTargetType targetType) {
policies.forEach(policy -> removePolicyTarget(policy, targetId, targetType));
}
public void replaceTarget(List<PolicyDefinition> policies, String oldTargetId, String newTargetId, PolicyTargetType targetType) {
policies.forEach(policy -> replacePolicyTarget(policy, targetType, oldTargetId, newTargetId));
}
private void replacePolicyTarget(PolicyDefinition policyDefinition, PolicyTargetType targetType, String oldTargetId, String newTargetId) {
List<String> policyTargets = getTargetsList(policyDefinition, targetType);
if (isEmpty(policyTargets)) {
return;
}
policyTargets.replaceAll(prevInstanceIdByNewInstanceId(oldTargetId, newTargetId));
}
private void removePolicyTarget(PolicyDefinition policy, String targetId, PolicyTargetType targetType) {
List<String> policyTargets = getTargetsList(policy, targetType);
if (isEmpty(policyTargets)) {
return;
}
policyTargets.remove(targetId);
}
private List<String> getTargetsList(PolicyDefinition policyDefinition, PolicyTargetType targetType) {
Map<PolicyTargetType, List<String>> targets = policyDefinition.getTargets();
if(MapUtils.isEmpty(targets) || isEmpty(targets.get(targetType))) {
return emptyList();
}
return targets.get(targetType);
}
private UnaryOperator<String> prevInstanceIdByNewInstanceId(String prevInstanceId, String newInstanceId) {
return instId -> instId.equals(prevInstanceId) ? newInstanceId: instId;
}
}
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