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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2019-2021 Nordix Foundation.
* Modifications Copyright (C) 2019-2021 AT&T Intellectual Property.
* Modifications Copyright (C) 2021-2022 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.
*
* SPDX-License-Identifier: Apache-2.0
* ============LICENSE_END=========================================================
*/
package org.onap.policy.pap.main.rest;
import java.util.List;
import javax.ws.rs.core.Response;
import org.apache.commons.lang3.tuple.Pair;
import org.onap.policy.models.base.PfModelException;
import org.onap.policy.models.pap.concepts.PdpGroupStateChangeResponse;
import org.onap.policy.models.pdp.concepts.Pdp;
import org.onap.policy.models.pdp.concepts.PdpGroup;
import org.onap.policy.models.pdp.concepts.PdpSubGroup;
import org.onap.policy.models.pdp.enums.PdpState;
import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicy;
import org.onap.policy.pap.main.comm.PdpMessageGenerator;
import org.onap.policy.pap.main.service.PdpGroupService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Service;
/**
* Provider for PAP component to change state of PDP group.
*
* @author Ram Krishna Verma (ram.krishna.verma@est.tech)
*/
@Service
public class PdpGroupStateChangeProvider extends PdpMessageGenerator {
private static final Logger LOGGER = LoggerFactory.getLogger(PdpGroupStateChangeProvider.class);
@Autowired
private PdpGroupService pdpGroupService;
/**
* Constructs the object.
*/
public PdpGroupStateChangeProvider() {
super(false);
}
/**
* Changes state of a PDP group.
*
* @param groupName name of the PDP group
* @param pdpGroupState state of the PDP group
* @return a pair containing the status and the response
* @throws PfModelException in case of errors
*/
public Pair<HttpStatus, PdpGroupStateChangeResponse> changeGroupState(final String groupName,
final PdpState pdpGroupState) throws PfModelException {
synchronized (updateLock) {
switch (pdpGroupState) {
case ACTIVE:
handleActiveState(groupName);
break;
case PASSIVE:
handlePassiveState(groupName);
break;
default:
throw new PfModelException(Response.Status.BAD_REQUEST,
"Only ACTIVE or PASSIVE state changes are allowed");
}
return Pair.of(HttpStatus.OK, new PdpGroupStateChangeResponse());
}
}
private void handleActiveState(final String groupName) throws PfModelException {
final List<PdpGroup> pdpGroups = pdpGroupService.getPdpGroups(groupName);
if (!pdpGroups.isEmpty() && !PdpState.ACTIVE.equals(pdpGroups.get(0).getPdpGroupState())) {
updatePdpGroupAndPdp(pdpGroups, PdpState.ACTIVE);
sendPdpMessage(pdpGroups.get(0), PdpState.ACTIVE);
}
}
private void handlePassiveState(final String groupName) throws PfModelException {
final List<PdpGroup> pdpGroups = pdpGroupService.getPdpGroups(groupName);
if (!pdpGroups.isEmpty() && !PdpState.PASSIVE.equals(pdpGroups.get(0).getPdpGroupState())) {
updatePdpGroupAndPdp(pdpGroups, PdpState.PASSIVE);
sendPdpMessage(pdpGroups.get(0), PdpState.PASSIVE);
}
}
private void updatePdpGroupAndPdp(final List<PdpGroup> pdpGroups, final PdpState pdpState) {
pdpGroups.get(0).setPdpGroupState(pdpState);
for (final PdpSubGroup subGroup : pdpGroups.get(0).getPdpSubgroups()) {
for (final Pdp pdp : subGroup.getPdpInstances()) {
pdp.setPdpState(pdpState);
}
}
pdpGroupService.updatePdpGroups(pdpGroups);
LOGGER.debug("Updated PdpGroup and Pdp in DB - {} ", pdpGroups);
}
private void sendPdpMessage(final PdpGroup pdpGroup, final PdpState pdpState) throws PfModelException {
String pdpGroupName = pdpGroup.getName();
for (final PdpSubGroup subGroup : pdpGroup.getPdpSubgroups()) {
List<ToscaPolicy> policies = getToscaPolicies(subGroup);
for (final Pdp pdp : subGroup.getPdpInstances()) {
String pdpInstanceId = pdp.getInstanceId();
final var pdpUpdatemessage =
createPdpUpdateMessage(pdpGroup.getName(), subGroup, pdp.getInstanceId(),
policies, null);
final var pdpStateChangeMessage =
createPdpStateChangeMessage(pdpGroupName, subGroup, pdpInstanceId, pdpState);
updateDeploymentStatus(pdpGroupName, subGroup.getPdpType(), pdpInstanceId,
pdpStateChangeMessage.getState(), pdpUpdatemessage.getPoliciesToBeDeployed());
requestMap.addRequest(pdpUpdatemessage, pdpStateChangeMessage);
LOGGER.debug("Sent PdpUpdate message - {}", pdpUpdatemessage);
LOGGER.debug("Sent PdpStateChange message - {}", pdpStateChangeMessage);
}
}
}
}
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