2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2021-2023 Nordix Foundation.
4 * ================================================================================
5 * Modifications Copyright (C) 2021 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
19 * SPDX-License-Identifier: Apache-2.0
20 * ============LICENSE_END=========================================================
23 package org.onap.policy.clamp.acm.participant.intermediary.handler;
25 import io.micrometer.core.annotation.Timed;
26 import java.util.ArrayList;
27 import java.util.HashMap;
28 import java.util.List;
30 import java.util.UUID;
32 import org.onap.policy.clamp.acm.participant.intermediary.comm.ParticipantMessagePublisher;
33 import org.onap.policy.clamp.acm.participant.intermediary.parameters.ParticipantParameters;
34 import org.onap.policy.clamp.models.acm.concepts.AutomationComposition;
35 import org.onap.policy.clamp.models.acm.concepts.AutomationCompositionElementDefinition;
36 import org.onap.policy.clamp.models.acm.concepts.AutomationCompositionInfo;
37 import org.onap.policy.clamp.models.acm.concepts.ParticipantDefinition;
38 import org.onap.policy.clamp.models.acm.concepts.ParticipantState;
39 import org.onap.policy.clamp.models.acm.concepts.ParticipantSupportedElementType;
40 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.AutomationCompositionDeploy;
41 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.AutomationCompositionStateChange;
42 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantAckMessage;
43 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantDeregister;
44 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantDeregisterAck;
45 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantMessage;
46 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantPrime;
47 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantPrimeAck;
48 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantRegister;
49 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantRegisterAck;
50 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantStatus;
51 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantStatusReq;
52 import org.onap.policy.models.base.PfModelException;
53 import org.slf4j.Logger;
54 import org.slf4j.LoggerFactory;
55 import org.springframework.stereotype.Component;
58 * This class is responsible for managing the state of a participant.
61 public class ParticipantHandler {
62 private static final Logger LOGGER = LoggerFactory.getLogger(ParticipantHandler.class);
65 private final UUID participantId;
67 private final AutomationCompositionHandler automationCompositionHandler;
68 private final ParticipantMessagePublisher publisher;
70 private final Map<UUID, List<AutomationCompositionElementDefinition>> acElementDefsMap = new HashMap<>();
72 private final List<ParticipantSupportedElementType> supportedAcElementTypes;
75 * Constructor, set the participant ID and sender.
77 * @param parameters the parameters of the participant
78 * @param publisher the publisher for sending responses to messages
80 public ParticipantHandler(ParticipantParameters parameters, ParticipantMessagePublisher publisher,
81 AutomationCompositionHandler automationCompositionHandler) {
82 this.participantId = parameters.getIntermediaryParameters().getParticipantId();
83 this.publisher = publisher;
84 this.automationCompositionHandler = automationCompositionHandler;
85 this.supportedAcElementTypes = parameters.getIntermediaryParameters().getParticipantSupportedElementTypes();
89 * Method which handles a participant health check event from clamp.
91 * @param participantStatusReqMsg participant participantStatusReq message
93 @Timed(value = "listener.participant_status_req", description = "PARTICIPANT_STATUS_REQ messages received")
94 public void handleParticipantStatusReq(final ParticipantStatusReq participantStatusReqMsg) {
95 var participantStatus = makeHeartbeat(true);
96 participantStatus.setParticipantSupportedElementType(this.supportedAcElementTypes);
97 publisher.sendParticipantStatus(participantStatus);
101 * Handle a automation composition update message.
103 * @param updateMsg the update message
106 value = "listener.automation_composition_update",
107 description = "AUTOMATION_COMPOSITION_UPDATE messages received")
108 public void handleAutomationCompositionDeploy(AutomationCompositionDeploy updateMsg) {
109 automationCompositionHandler.handleAutomationCompositionDeploy(updateMsg,
110 acElementDefsMap.get(updateMsg.getCompositionId()));
114 * Handle a automation composition state change message.
116 * @param stateChangeMsg the state change message
119 value = "listener.automation_composition_state_change",
120 description = "AUTOMATION_COMPOSITION_STATE_CHANGE messages received")
121 public void handleAutomationCompositionStateChange(AutomationCompositionStateChange stateChangeMsg) {
122 automationCompositionHandler.handleAutomationCompositionStateChange(stateChangeMsg,
123 acElementDefsMap.get(stateChangeMsg.getCompositionId()));
127 * Check if a participant message applies to this participant handler.
129 * @param participantMsg the message to check
130 * @return true if it applies, false otherwise
132 public boolean appliesTo(ParticipantMessage participantMsg) {
133 return participantMsg.appliesTo(participantId);
137 * Check if a participant message applies to this participant handler.
139 * @param participantMsg the message to check
140 * @return true if it applies, false otherwise
142 public boolean appliesTo(ParticipantAckMessage participantMsg) {
143 return participantMsg.appliesTo(participantId);
147 * Method to send ParticipantRegister message to automation composition runtime.
149 public void sendParticipantRegister() {
150 var participantRegister = new ParticipantRegister();
151 participantRegister.setParticipantId(participantId);
152 participantRegister.setParticipantSupportedElementType(supportedAcElementTypes);
154 publisher.sendParticipantRegister(participantRegister);
158 * Handle a participantRegister Ack message.
160 * @param participantRegisterAckMsg the participantRegisterAck message
162 @Timed(value = "listener.participant_register_ack", description = "PARTICIPANT_REGISTER_ACK messages received")
163 public void handleParticipantRegisterAck(ParticipantRegisterAck participantRegisterAckMsg) {
164 LOGGER.debug("ParticipantRegisterAck message received as responseTo {}",
165 participantRegisterAckMsg.getResponseTo());
166 publisher.sendParticipantStatus(makeHeartbeat(false));
170 * Method to send ParticipantDeregister message to automation composition runtime.
172 public void sendParticipantDeregister() {
173 var participantDeregister = new ParticipantDeregister();
174 participantDeregister.setParticipantId(participantId);
176 undeployInstancesOnParticipant();
177 publisher.sendParticipantDeregister(participantDeregister);
180 private void undeployInstancesOnParticipant() {
181 automationCompositionHandler.getAutomationCompositionMap().values().forEach(ac ->
182 undeployInstanceOnParticipant(ac)
186 private void undeployInstanceOnParticipant(AutomationComposition automationComposition) {
187 automationComposition.getElements().values().forEach(element -> {
188 if (element.getParticipantId().equals(participantId)) {
189 undeployInstanceElementsOnParticipant(automationComposition.getInstanceId(), element.getId());
194 private void undeployInstanceElementsOnParticipant(UUID instanceId, UUID elementId) {
195 var acElementListeners = automationCompositionHandler.getListeners();
196 for (var acElementListener : acElementListeners) {
198 acElementListener.undeploy(instanceId, elementId);
199 } catch (PfModelException e) {
200 LOGGER.debug("Automation composition element update failed {}", instanceId);
206 * Handle a participantDeregister Ack message.
208 * @param participantDeregisterAckMsg the participantDeregisterAck message
210 @Timed(value = "listener.participant_deregister_ack", description = "PARTICIPANT_DEREGISTER_ACK messages received")
211 public void handleParticipantDeregisterAck(ParticipantDeregisterAck participantDeregisterAckMsg) {
212 LOGGER.debug("ParticipantDeregisterAck message received as responseTo {}",
213 participantDeregisterAckMsg.getResponseTo());
217 * Handle a ParticipantPrime message.
219 * @param participantPrimeMsg the ParticipantPrime message
221 @Timed(value = "listener.participant_prime", description = "PARTICIPANT_PRIME messages received")
222 public void handleParticipantPrime(ParticipantPrime participantPrimeMsg) {
223 LOGGER.debug("ParticipantPrime message received for participantId {}",
224 participantPrimeMsg.getParticipantId());
226 acElementDefsMap.putIfAbsent(participantPrimeMsg.getCompositionId(), new ArrayList<>());
227 if (!participantPrimeMsg.getParticipantDefinitionUpdates().isEmpty()) {
228 // This message is to commission the automation composition
229 for (var participantDefinition : participantPrimeMsg.getParticipantDefinitionUpdates()) {
230 if (participantDefinition.getParticipantId().equals(participantId)) {
231 acElementDefsMap.get(participantPrimeMsg.getCompositionId())
232 .addAll(participantDefinition.getAutomationCompositionElementDefinitionList());
237 // This message is to decommission the automation composition
238 acElementDefsMap.get(participantPrimeMsg.getCompositionId()).clear();
240 sendParticipantPrimeAck(participantPrimeMsg.getMessageId(), participantPrimeMsg.getCompositionId());
244 * Method to send ParticipantPrimeAck message to automation composition runtime.
246 public void sendParticipantPrimeAck(UUID messageId, UUID compositionId) {
247 var participantPrimeAck = new ParticipantPrimeAck();
248 participantPrimeAck.setResponseTo(messageId);
249 participantPrimeAck.setCompositionId(compositionId);
250 participantPrimeAck.setMessage("Participant Prime Ack message");
251 participantPrimeAck.setResult(true);
252 participantPrimeAck.setParticipantId(participantId);
253 participantPrimeAck.setState(ParticipantState.ON_LINE);
254 publisher.sendParticipantPrimeAck(participantPrimeAck);
258 * Dispatch a heartbeat for this participant.
260 public void sendHeartbeat() {
261 publisher.sendHeartbeat(makeHeartbeat(false));
265 * Method to send heartbeat to automation composition runtime.
267 public ParticipantStatus makeHeartbeat(boolean responseToParticipantStatusReq) {
268 var heartbeat = new ParticipantStatus();
269 heartbeat.setParticipantId(participantId);
270 heartbeat.setState(ParticipantState.ON_LINE);
271 heartbeat.setAutomationCompositionInfoList(getAutomationCompositionInfoList());
273 if (responseToParticipantStatusReq) {
274 List<ParticipantDefinition> participantDefinitionList = new ArrayList<>(acElementDefsMap.size());
275 for (var acElementDefsOnThisParticipant : acElementDefsMap.values()) {
276 var participantDefinition = new ParticipantDefinition();
277 participantDefinition.setParticipantId(participantId);
278 participantDefinition.setAutomationCompositionElementDefinitionList(acElementDefsOnThisParticipant);
279 participantDefinitionList.add(participantDefinition);
281 heartbeat.setParticipantDefinitionUpdates(participantDefinitionList);
287 private List<AutomationCompositionInfo> getAutomationCompositionInfoList() {
288 List<AutomationCompositionInfo> automationCompositionInfoList = new ArrayList<>();
289 for (var entry : automationCompositionHandler.getAutomationCompositionMap().entrySet()) {
290 var acInfo = new AutomationCompositionInfo();
291 acInfo.setAutomationCompositionId(entry.getKey());
292 acInfo.setDeployState(entry.getValue().getDeployState());
293 acInfo.setLockState(entry.getValue().getLockState());
294 automationCompositionInfoList.add(acInfo);
296 return automationCompositionInfoList;