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/*
* ============LICENSE_START=======================================================
* ONAP PAP
* ================================================================================
* Copyright (C) 2019-2021 AT&T Intellectual Property. All rights reserved.
* Modifications Copyright (C) 2021 Nordix Foundation.
* ================================================================================
* 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.pap.main.comm.msgdata;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.stream.Collectors;
import lombok.Getter;
import org.apache.commons.lang3.StringUtils;
import org.onap.policy.models.pdp.concepts.PdpMessage;
import org.onap.policy.models.pdp.concepts.PdpStatus;
import org.onap.policy.models.pdp.concepts.PdpUpdate;
import org.onap.policy.models.tosca.authorative.concepts.ToscaConceptIdentifier;
import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicy;
import org.onap.policy.pap.main.parameters.RequestParams;
/**
* Wraps an UPDATE.
*/
public class UpdateReq extends RequestImpl {
/**
* Policies to be undeployed if the request fails.
*/
@Getter
private Collection<ToscaConceptIdentifier> undeployPolicies = Collections.emptyList();
/**
* Constructs the object, and validates the parameters.
*
* @param params configuration parameters
* @param name the request name, used for logging purposes
* @param message the initial message
*
* @throws IllegalArgumentException if a required parameter is not set
*/
public UpdateReq(RequestParams params, String name, PdpUpdate message) {
super(params, name, message);
}
@Override
public PdpUpdate getMessage() {
return (PdpUpdate) super.getMessage();
}
@Override
public String checkResponse(PdpStatus response) {
// reset the list
undeployPolicies = Collections.emptyList();
String reason = super.checkResponse(response);
if (reason != null) {
// response isn't for this PDP - don't generate notifications
return reason;
}
PdpUpdate message = getMessage();
if (!StringUtils.equals(message.getPdpGroup(), response.getPdpGroup())) {
return "group does not match";
}
if (!StringUtils.equals(message.getPdpSubgroup(), response.getPdpSubgroup())) {
return "subgroup does not match";
}
if (message.getPdpSubgroup() == null) {
return null;
}
Set<ToscaConceptIdentifier> actualSet = new HashSet<>(alwaysList(response.getPolicies()));
Set<ToscaConceptIdentifier> expectedSet = new HashSet<>(alwaysList(message.getPolicies()).stream()
.map(ToscaPolicy::getIdentifier).collect(Collectors.toSet()));
getNotifier().processResponse(response.getName(), message.getPdpGroup(), expectedSet, actualSet);
// see if the policies match
if (!actualSet.equals(expectedSet)) {
// need to undeploy the policies that are expected, but missing from the
// response
undeployPolicies = expectedSet;
undeployPolicies.removeAll(actualSet);
return "policies do not match";
}
return null;
}
@Override
public boolean reconfigure(PdpMessage newMessage) {
if (!(newMessage instanceof PdpUpdate)) {
// not an update - no change to this request
return false;
}
PdpUpdate update = (PdpUpdate) newMessage;
if (isSameContent(update)) {
// content hasn't changed - nothing more to do
return true;
}
Map<ToscaConceptIdentifier, ToscaPolicy> newDeployMap = update.getPoliciesToBeDeployed().stream()
.collect(Collectors.toMap(ToscaPolicy::getIdentifier, policy -> policy));
// Merge full lists
final List<ToscaPolicy> fullPolicies = update.getPolicies();
// Merge undpeloy lists
Set<ToscaConceptIdentifier> policiesToBeUndeployedSet = new HashSet<>(getMessage().getPoliciesToBeUndeployed());
policiesToBeUndeployedSet.removeAll(newDeployMap.keySet());
policiesToBeUndeployedSet.addAll(update.getPoliciesToBeUndeployed());
final List<ToscaConceptIdentifier> policiestoBeUndeployed = new LinkedList<>(policiesToBeUndeployedSet);
// Merge deploy lists
final List<ToscaPolicy> policiesToBeDeployed;
if (update.getPoliciesToBeDeployed() == update.getPolicies()) {
policiesToBeDeployed = update.getPoliciesToBeDeployed();
} else {
Map<ToscaConceptIdentifier, ToscaPolicy> policiesToBeDeployedMap = getMessage().getPoliciesToBeDeployed()
.stream().collect(Collectors.toMap(ToscaPolicy::getIdentifier, policy -> policy));
policiesToBeDeployedMap.keySet().removeAll(update.getPoliciesToBeUndeployed());
policiesToBeDeployedMap.putAll(newDeployMap);
policiesToBeDeployed = new LinkedList<>(policiesToBeDeployedMap.values());
}
// Set lists in update
update.setPolicies(fullPolicies);
update.setPoliciesToBeDeployed(policiesToBeDeployed);
update.setPoliciesToBeUndeployed(policiestoBeUndeployed);
reconfigure2(update);
return true;
}
protected final boolean isSameContent(PdpUpdate second) {
PdpUpdate first = getMessage();
if (!StringUtils.equals(first.getPdpGroup(), second.getPdpGroup())) {
return false;
}
if (!StringUtils.equals(first.getPdpSubgroup(), second.getPdpSubgroup())) {
return false;
}
// see if the policies are the same
Set<ToscaPolicy> set1 = new HashSet<>(alwaysList(first.getPolicies()));
Set<ToscaPolicy> set2 = new HashSet<>(alwaysList(second.getPolicies()));
if (!(set1.equals(set2))) {
return false;
}
Map<ToscaConceptIdentifier, ToscaPolicy> dep1 = first.getPolicies().stream()
.collect(Collectors.toMap(ToscaPolicy::getIdentifier, p -> p));
Map<ToscaConceptIdentifier, ToscaPolicy> dep2 = second.getPoliciesToBeDeployed()
.stream().collect(Collectors.toMap(ToscaPolicy::getIdentifier, p -> p));
if (!(dep1.equals(dep2))) {
return false;
}
HashSet<ToscaConceptIdentifier> undep1 = new HashSet<>(alwaysList(first.getPoliciesToBeUndeployed()));
HashSet<ToscaConceptIdentifier> undep2 = new HashSet<>(alwaysList(second.getPoliciesToBeUndeployed()));
return undep1.equals(undep2);
}
/**
* Always get a list, even if the original is {@code null}.
*
* @param list the original list, or {@code null}
* @return the list, or an empty list if the original was {@code null}
*/
private <T> List<T> alwaysList(List<T> list) {
return (list != null ? list : Collections.emptyList());
}
}
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