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.AutomationCompositionElementDefinition;
35 import org.onap.policy.clamp.models.acm.concepts.ParticipantDefinition;
36 import org.onap.policy.clamp.models.acm.concepts.ParticipantState;
37 import org.onap.policy.clamp.models.acm.concepts.ParticipantSupportedElementType;
38 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.AutomationCompositionDeploy;
39 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.AutomationCompositionStateChange;
40 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantAckMessage;
41 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantDeregister;
42 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantDeregisterAck;
43 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantMessage;
44 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantPrime;
45 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantPrimeAck;
46 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantRegister;
47 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantRegisterAck;
48 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantStatus;
49 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantStatusReq;
50 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.PropertiesUpdate;
51 import org.slf4j.Logger;
52 import org.slf4j.LoggerFactory;
53 import org.springframework.stereotype.Component;
56 * This class is responsible for managing the state of a participant.
59 public class ParticipantHandler {
60 private static final Logger LOGGER = LoggerFactory.getLogger(ParticipantHandler.class);
63 private final UUID participantId;
65 private final AutomationCompositionHandler automationCompositionHandler;
66 private final ParticipantMessagePublisher publisher;
68 private final Map<UUID, List<AutomationCompositionElementDefinition>> acElementDefsMap = new HashMap<>();
70 private final List<ParticipantSupportedElementType> supportedAcElementTypes;
73 * Constructor, set the participant ID and sender.
75 * @param parameters the parameters of the participant
76 * @param publisher the publisher for sending responses to messages
77 * @param automationCompositionHandler the publisher for sending responses to messages
79 public ParticipantHandler(ParticipantParameters parameters, ParticipantMessagePublisher publisher,
80 AutomationCompositionHandler automationCompositionHandler) {
81 this.participantId = parameters.getIntermediaryParameters().getParticipantId();
82 this.publisher = publisher;
83 this.automationCompositionHandler = automationCompositionHandler;
84 this.supportedAcElementTypes = parameters.getIntermediaryParameters().getParticipantSupportedElementTypes();
88 * Method which handles a participant health check event from clamp.
90 * @param participantStatusReqMsg participant participantStatusReq message
92 @Timed(value = "listener.participant_status_req", description = "PARTICIPANT_STATUS_REQ messages received")
93 public void handleParticipantStatusReq(final ParticipantStatusReq participantStatusReqMsg) {
94 var participantStatus = makeHeartbeat(true);
95 publisher.sendParticipantStatus(participantStatus);
99 * Handle a automation composition update message.
101 * @param updateMsg the update message
104 value = "listener.automation_composition_update",
105 description = "AUTOMATION_COMPOSITION_UPDATE messages received")
106 public void handleAutomationCompositionDeploy(AutomationCompositionDeploy updateMsg) {
107 automationCompositionHandler.handleAutomationCompositionDeploy(updateMsg,
108 acElementDefsMap.get(updateMsg.getCompositionId()));
112 * Handle a automation composition state change message.
114 * @param stateChangeMsg the state change message
117 value = "listener.automation_composition_state_change",
118 description = "AUTOMATION_COMPOSITION_STATE_CHANGE messages received")
119 public void handleAutomationCompositionStateChange(AutomationCompositionStateChange stateChangeMsg) {
120 automationCompositionHandler.handleAutomationCompositionStateChange(stateChangeMsg,
121 acElementDefsMap.get(stateChangeMsg.getCompositionId()));
125 * Handle a automation composition property update message.
127 * @param propertyUpdateMsg the property update message
130 value = "listener.properties_update",
131 description = "PROPERTIES_UPDATE message received")
132 public void handleAcPropertyUpdate(PropertiesUpdate propertyUpdateMsg) {
133 automationCompositionHandler.handleAcPropertyUpdate(propertyUpdateMsg,
134 acElementDefsMap.get(propertyUpdateMsg.getCompositionId()));
138 * Check if a participant message applies to this participant handler.
140 * @param participantMsg the message to check
141 * @return true if it applies, false otherwise
143 public boolean appliesTo(ParticipantMessage participantMsg) {
144 return participantMsg.appliesTo(participantId);
148 * Check if a participant message applies to this participant handler.
150 * @param participantMsg the message to check
151 * @return true if it applies, false otherwise
153 public boolean appliesTo(ParticipantAckMessage participantMsg) {
154 return participantMsg.appliesTo(participantId);
158 * Method to send ParticipantRegister message to automation composition runtime.
160 public void sendParticipantRegister() {
161 var participantRegister = new ParticipantRegister();
162 participantRegister.setParticipantId(participantId);
163 participantRegister.setParticipantSupportedElementType(supportedAcElementTypes);
165 publisher.sendParticipantRegister(participantRegister);
169 * Handle a participantRegister Ack message.
171 * @param participantRegisterAckMsg the participantRegisterAck message
173 @Timed(value = "listener.participant_register_ack", description = "PARTICIPANT_REGISTER_ACK messages received")
174 public void handleParticipantRegisterAck(ParticipantRegisterAck participantRegisterAckMsg) {
175 LOGGER.debug("ParticipantRegisterAck message received as responseTo {}",
176 participantRegisterAckMsg.getResponseTo());
177 publisher.sendParticipantStatus(makeHeartbeat(false));
181 * Method to send ParticipantDeregister message to automation composition runtime.
183 public void sendParticipantDeregister() {
184 var participantDeregister = new ParticipantDeregister();
185 participantDeregister.setParticipantId(participantId);
186 publisher.sendParticipantDeregister(participantDeregister);
187 automationCompositionHandler.undeployInstances();
191 * Handle a participantDeregister Ack message.
193 * @param participantDeregisterAckMsg the participantDeregisterAck message
195 @Timed(value = "listener.participant_deregister_ack", description = "PARTICIPANT_DEREGISTER_ACK messages received")
196 public void handleParticipantDeregisterAck(ParticipantDeregisterAck participantDeregisterAckMsg) {
197 LOGGER.debug("ParticipantDeregisterAck message received as responseTo {}",
198 participantDeregisterAckMsg.getResponseTo());
202 * Handle a ParticipantPrime message.
204 * @param participantPrimeMsg the ParticipantPrime message
206 @Timed(value = "listener.participant_prime", description = "PARTICIPANT_PRIME messages received")
207 public void handleParticipantPrime(ParticipantPrime participantPrimeMsg) {
208 LOGGER.debug("ParticipantPrime message received for participantId {}",
209 participantPrimeMsg.getParticipantId());
211 acElementDefsMap.putIfAbsent(participantPrimeMsg.getCompositionId(), new ArrayList<>());
212 if (!participantPrimeMsg.getParticipantDefinitionUpdates().isEmpty()) {
213 // This message is to commission the automation composition
214 for (var participantDefinition : participantPrimeMsg.getParticipantDefinitionUpdates()) {
215 if (participantDefinition.getParticipantId().equals(participantId)) {
216 acElementDefsMap.get(participantPrimeMsg.getCompositionId())
217 .addAll(participantDefinition.getAutomationCompositionElementDefinitionList());
222 // This message is to decommission the automation composition
223 acElementDefsMap.get(participantPrimeMsg.getCompositionId()).clear();
225 sendParticipantPrimeAck(participantPrimeMsg.getMessageId(), participantPrimeMsg.getCompositionId());
229 * Method to send ParticipantPrimeAck message to automation composition runtime.
231 private void sendParticipantPrimeAck(UUID messageId, UUID compositionId) {
232 var participantPrimeAck = new ParticipantPrimeAck();
233 participantPrimeAck.setResponseTo(messageId);
234 participantPrimeAck.setCompositionId(compositionId);
235 participantPrimeAck.setMessage("Participant Prime Ack message");
236 participantPrimeAck.setResult(true);
237 participantPrimeAck.setParticipantId(participantId);
238 participantPrimeAck.setState(ParticipantState.ON_LINE);
239 publisher.sendParticipantPrimeAck(participantPrimeAck);
243 * Dispatch a heartbeat for this participant.
245 public void sendHeartbeat() {
246 publisher.sendHeartbeat(makeHeartbeat(false));
250 * Method to send heartbeat to automation composition runtime.
252 public ParticipantStatus makeHeartbeat(boolean responseToParticipantStatusReq) {
253 var heartbeat = new ParticipantStatus();
254 heartbeat.setParticipantId(participantId);
255 heartbeat.setState(ParticipantState.ON_LINE);
256 heartbeat.setAutomationCompositionInfoList(automationCompositionHandler.getAutomationCompositionInfoList());
257 heartbeat.setParticipantSupportedElementType(new ArrayList<>(this.supportedAcElementTypes));
259 if (responseToParticipantStatusReq) {
260 List<ParticipantDefinition> participantDefinitionList = new ArrayList<>(acElementDefsMap.size());
261 for (var acElementDefsOnThisParticipant : acElementDefsMap.values()) {
262 var participantDefinition = new ParticipantDefinition();
263 participantDefinition.setParticipantId(participantId);
264 participantDefinition.setAutomationCompositionElementDefinitionList(acElementDefsOnThisParticipant);
265 participantDefinitionList.add(participantDefinition);
267 heartbeat.setParticipantDefinitionUpdates(participantDefinitionList);