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.slf4j.Logger;
51 import org.slf4j.LoggerFactory;
52 import org.springframework.stereotype.Component;
55 * This class is responsible for managing the state of a participant.
58 public class ParticipantHandler {
59 private static final Logger LOGGER = LoggerFactory.getLogger(ParticipantHandler.class);
62 private final UUID participantId;
64 private final AutomationCompositionHandler automationCompositionHandler;
65 private final ParticipantMessagePublisher publisher;
67 private final Map<UUID, List<AutomationCompositionElementDefinition>> acElementDefsMap = new HashMap<>();
69 private final List<ParticipantSupportedElementType> supportedAcElementTypes;
72 * Constructor, set the participant ID and sender.
74 * @param parameters the parameters of the participant
75 * @param publisher the publisher for sending responses to messages
76 * @param automationCompositionHandler the publisher for sending responses to messages
78 public ParticipantHandler(ParticipantParameters parameters, ParticipantMessagePublisher publisher,
79 AutomationCompositionHandler automationCompositionHandler) {
80 this.participantId = parameters.getIntermediaryParameters().getParticipantId();
81 this.publisher = publisher;
82 this.automationCompositionHandler = automationCompositionHandler;
83 this.supportedAcElementTypes = parameters.getIntermediaryParameters().getParticipantSupportedElementTypes();
87 * Method which handles a participant health check event from clamp.
89 * @param participantStatusReqMsg participant participantStatusReq message
91 @Timed(value = "listener.participant_status_req", description = "PARTICIPANT_STATUS_REQ messages received")
92 public void handleParticipantStatusReq(final ParticipantStatusReq participantStatusReqMsg) {
93 var participantStatus = makeHeartbeat(true);
94 publisher.sendParticipantStatus(participantStatus);
98 * Handle a automation composition update message.
100 * @param updateMsg the update message
103 value = "listener.automation_composition_update",
104 description = "AUTOMATION_COMPOSITION_UPDATE messages received")
105 public void handleAutomationCompositionDeploy(AutomationCompositionDeploy updateMsg) {
106 automationCompositionHandler.handleAutomationCompositionDeploy(updateMsg,
107 acElementDefsMap.get(updateMsg.getCompositionId()));
111 * Handle a automation composition state change message.
113 * @param stateChangeMsg the state change message
116 value = "listener.automation_composition_state_change",
117 description = "AUTOMATION_COMPOSITION_STATE_CHANGE messages received")
118 public void handleAutomationCompositionStateChange(AutomationCompositionStateChange stateChangeMsg) {
119 automationCompositionHandler.handleAutomationCompositionStateChange(stateChangeMsg,
120 acElementDefsMap.get(stateChangeMsg.getCompositionId()));
124 * Check if a participant message applies to this participant handler.
126 * @param participantMsg the message to check
127 * @return true if it applies, false otherwise
129 public boolean appliesTo(ParticipantMessage participantMsg) {
130 return participantMsg.appliesTo(participantId);
134 * Check if a participant message applies to this participant handler.
136 * @param participantMsg the message to check
137 * @return true if it applies, false otherwise
139 public boolean appliesTo(ParticipantAckMessage participantMsg) {
140 return participantMsg.appliesTo(participantId);
144 * Method to send ParticipantRegister message to automation composition runtime.
146 public void sendParticipantRegister() {
147 var participantRegister = new ParticipantRegister();
148 participantRegister.setParticipantId(participantId);
149 participantRegister.setParticipantSupportedElementType(supportedAcElementTypes);
151 publisher.sendParticipantRegister(participantRegister);
155 * Handle a participantRegister Ack message.
157 * @param participantRegisterAckMsg the participantRegisterAck message
159 @Timed(value = "listener.participant_register_ack", description = "PARTICIPANT_REGISTER_ACK messages received")
160 public void handleParticipantRegisterAck(ParticipantRegisterAck participantRegisterAckMsg) {
161 LOGGER.debug("ParticipantRegisterAck message received as responseTo {}",
162 participantRegisterAckMsg.getResponseTo());
163 publisher.sendParticipantStatus(makeHeartbeat(false));
167 * Method to send ParticipantDeregister message to automation composition runtime.
169 public void sendParticipantDeregister() {
170 var participantDeregister = new ParticipantDeregister();
171 participantDeregister.setParticipantId(participantId);
172 publisher.sendParticipantDeregister(participantDeregister);
173 automationCompositionHandler.undeployInstances();
177 * Handle a participantDeregister Ack message.
179 * @param participantDeregisterAckMsg the participantDeregisterAck message
181 @Timed(value = "listener.participant_deregister_ack", description = "PARTICIPANT_DEREGISTER_ACK messages received")
182 public void handleParticipantDeregisterAck(ParticipantDeregisterAck participantDeregisterAckMsg) {
183 LOGGER.debug("ParticipantDeregisterAck message received as responseTo {}",
184 participantDeregisterAckMsg.getResponseTo());
188 * Handle a ParticipantPrime message.
190 * @param participantPrimeMsg the ParticipantPrime message
192 @Timed(value = "listener.participant_prime", description = "PARTICIPANT_PRIME messages received")
193 public void handleParticipantPrime(ParticipantPrime participantPrimeMsg) {
194 LOGGER.debug("ParticipantPrime message received for participantId {}",
195 participantPrimeMsg.getParticipantId());
197 acElementDefsMap.putIfAbsent(participantPrimeMsg.getCompositionId(), new ArrayList<>());
198 if (!participantPrimeMsg.getParticipantDefinitionUpdates().isEmpty()) {
199 // This message is to commission the automation composition
200 for (var participantDefinition : participantPrimeMsg.getParticipantDefinitionUpdates()) {
201 if (participantDefinition.getParticipantId().equals(participantId)) {
202 acElementDefsMap.get(participantPrimeMsg.getCompositionId())
203 .addAll(participantDefinition.getAutomationCompositionElementDefinitionList());
208 // This message is to decommission the automation composition
209 acElementDefsMap.get(participantPrimeMsg.getCompositionId()).clear();
211 sendParticipantPrimeAck(participantPrimeMsg.getMessageId(), participantPrimeMsg.getCompositionId());
215 * Method to send ParticipantPrimeAck message to automation composition runtime.
217 private void sendParticipantPrimeAck(UUID messageId, UUID compositionId) {
218 var participantPrimeAck = new ParticipantPrimeAck();
219 participantPrimeAck.setResponseTo(messageId);
220 participantPrimeAck.setCompositionId(compositionId);
221 participantPrimeAck.setMessage("Participant Prime Ack message");
222 participantPrimeAck.setResult(true);
223 participantPrimeAck.setParticipantId(participantId);
224 participantPrimeAck.setState(ParticipantState.ON_LINE);
225 publisher.sendParticipantPrimeAck(participantPrimeAck);
229 * Dispatch a heartbeat for this participant.
231 public void sendHeartbeat() {
232 publisher.sendHeartbeat(makeHeartbeat(false));
236 * Method to send heartbeat to automation composition runtime.
238 public ParticipantStatus makeHeartbeat(boolean responseToParticipantStatusReq) {
239 var heartbeat = new ParticipantStatus();
240 heartbeat.setParticipantId(participantId);
241 heartbeat.setState(ParticipantState.ON_LINE);
242 heartbeat.setAutomationCompositionInfoList(automationCompositionHandler.getAutomationCompositionInfoList());
243 heartbeat.setParticipantSupportedElementType(new ArrayList<>(this.supportedAcElementTypes));
245 if (responseToParticipantStatusReq) {
246 List<ParticipantDefinition> participantDefinitionList = new ArrayList<>(acElementDefsMap.size());
247 for (var acElementDefsOnThisParticipant : acElementDefsMap.values()) {
248 var participantDefinition = new ParticipantDefinition();
249 participantDefinition.setParticipantId(participantId);
250 participantDefinition.setAutomationCompositionElementDefinitionList(acElementDefsOnThisParticipant);
251 participantDefinitionList.add(participantDefinition);
253 heartbeat.setParticipantDefinitionUpdates(participantDefinitionList);