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/*
* ============LICENSE_START=======================================================
* ONAP PAP
* ================================================================================
* Copyright (C) 2019, 2021 AT&T Intellectual Property. All rights reserved.
* Modifications Copyright (C) 2020-2021, 2023 Nordix Foundation.
* Modifications Copyright (C) 2021 Bell Canada. All rights reserved.
* ================================================================================
* 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.rest;
import jakarta.ws.rs.core.Response.Status;
import java.util.Iterator;
import java.util.Set;
import java.util.function.Predicate;
import java.util.stream.Collectors;
import org.onap.policy.models.base.PfModelException;
import org.onap.policy.models.pdp.concepts.Pdp;
import org.onap.policy.models.pdp.concepts.PdpGroup;
import org.onap.policy.models.pdp.enums.PdpState;
import org.onap.policy.models.tosca.authorative.concepts.ToscaConceptIdentifier;
import org.onap.policy.models.tosca.authorative.concepts.ToscaConceptIdentifierOptVersion;
import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicy;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Service;
/**
* Provider for PAP component to delete PDP groups.
*/
@Service
public class PdpGroupDeleteProvider extends ProviderBase {
private static final Logger logger = LoggerFactory.getLogger(PdpGroupDeleteProvider.class);
/**
* Deletes a PDP group.
*
* @param groupName name of the PDP group to be deleted
* @throws PfModelException if an error occurred
*/
public void deleteGroup(String groupName) throws PfModelException {
process(groupName, this::deleteGroup);
}
/**
* Deletes a PDP group.
*
* @param data session data
* @param groupName name of the PDP group to be deleted
* @throws PfModelException if an error occurred
*/
private void deleteGroup(SessionData data, String groupName) throws PfModelException {
try {
PdpGroup group = data.getGroup(groupName);
if (group == null) {
throw new PfModelException(Status.NOT_FOUND, "group not found");
}
if (group.getPdpGroupState() == PdpState.ACTIVE) {
throw new PfModelException(Status.BAD_REQUEST, "group is still " + PdpState.ACTIVE);
}
data.deleteGroupFromDb(group);
} catch (PfModelException | RuntimeException e) {
// no need to log the error object here, as it will be logged by the invoker
logger.warn("failed to delete group: {}", groupName);
throw e;
}
}
/**
* Undeploys a policy.
*
* @param policyIdent identifier of the policy to be undeployed
* @throws PfModelException if an error occurred
*/
public void undeploy(ToscaConceptIdentifierOptVersion policyIdent, String user) throws PfModelException {
process(user, policyIdent, this::undeployPolicy);
}
/**
* Undeploys a policy from its groups.
*
* @param data session data
* @param ident identifier of the policy to be deleted
* @throws PfModelException if an error occurred
*/
private void undeployPolicy(SessionData data, ToscaConceptIdentifierOptVersion ident) throws PfModelException {
try {
processPolicy(data, ident);
if (data.isUnchanged()) {
throw new PfModelException(Status.BAD_REQUEST, "policy does not appear in any PDP group: "
+ ident.getName() + " " + ident.getVersion());
}
} catch (PfModelException | RuntimeException e) {
// no need to log the error object here, as it will be logged by the invoker
logger.warn("failed to undeploy policy: {}", ident);
throw e;
}
}
/**
* Returns a function that will remove the desired policy from a subgroup.
*/
@Override
protected Updater makeUpdater(SessionData data, ToscaPolicy policy,
ToscaConceptIdentifierOptVersion desiredIdent) {
// construct a matcher based on whether or not the version was specified
Predicate<ToscaConceptIdentifier> matcher;
if (desiredIdent.getVersion() != null) {
// version was specified - match the whole identifier
matcher = policy.getIdentifier()::equals;
} else {
// version was not specified - match the name only
String desnm = desiredIdent.getName();
matcher = ident -> ident.getName().equals(desnm);
}
// return a function that will remove the policy from the subgroup
return (group, subgroup) -> {
Set<String> pdps = subgroup.getPdpInstances().stream().map(Pdp::getInstanceId).collect(Collectors.toSet());
var result = false;
Iterator<ToscaConceptIdentifier> iter = subgroup.getPolicies().iterator();
while (iter.hasNext()) {
ToscaConceptIdentifier ident = iter.next();
if (matcher.test(ident)) {
result = true;
iter.remove();
logger.info("remove policy {} from subgroup {} {} count={}", ident,
group.getName(), subgroup.getPdpType(), subgroup.getPolicies().size());
data.trackUndeploy(ident, pdps, group.getName(), subgroup.getPdpType());
}
}
return result;
};
}
}
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