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.AutomationCompositionInfo;
36 import org.onap.policy.clamp.models.acm.concepts.ParticipantDefinition;
37 import org.onap.policy.clamp.models.acm.concepts.ParticipantState;
38 import org.onap.policy.clamp.models.acm.concepts.ParticipantSupportedElementType;
39 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.AutomationCompositionStateChange;
40 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.AutomationCompositionUpdate;
41 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantAckMessage;
42 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantDeregister;
43 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantDeregisterAck;
44 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantMessage;
45 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantRegister;
46 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantRegisterAck;
47 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantStatus;
48 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantStatusReq;
49 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantUpdate;
50 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantUpdateAck;
51 import org.onap.policy.models.tosca.authorative.concepts.ToscaConceptIdentifier;
52 import org.slf4j.Logger;
53 import org.slf4j.LoggerFactory;
54 import org.springframework.stereotype.Component;
57 * This class is responsible for managing the state of a participant.
60 public class ParticipantHandler {
61 private static final Logger LOGGER = LoggerFactory.getLogger(ParticipantHandler.class);
64 private final ToscaConceptIdentifier participantType;
67 private final UUID participantId;
69 private final AutomationCompositionHandler automationCompositionHandler;
70 private final ParticipantMessagePublisher publisher;
72 private final Map<UUID, List<AutomationCompositionElementDefinition>> acElementDefsMap = new HashMap<>();
74 private final List<ParticipantSupportedElementType> supportedAcElementTypes;
77 * Constructor, set the participant ID and sender.
79 * @param parameters the parameters of the participant
80 * @param publisher the publisher for sending responses to messages
82 public ParticipantHandler(ParticipantParameters parameters, ParticipantMessagePublisher publisher,
83 AutomationCompositionHandler automationCompositionHandler) {
84 this.participantType = parameters.getIntermediaryParameters().getParticipantType();
85 this.participantId = parameters.getIntermediaryParameters().getParticipantId();
86 this.publisher = publisher;
87 this.automationCompositionHandler = automationCompositionHandler;
88 this.supportedAcElementTypes = parameters.getIntermediaryParameters().getParticipantSupportedElementTypes();
92 * Method which handles a participant health check event from clamp.
94 * @param participantStatusReqMsg participant participantStatusReq message
96 @Timed(value = "listener.participant_status_req", description = "PARTICIPANT_STATUS_REQ messages received")
97 public void handleParticipantStatusReq(final ParticipantStatusReq participantStatusReqMsg) {
98 var participantStatus = makeHeartbeat(true);
99 participantStatus.setParticipantSupportedElementType(this.supportedAcElementTypes);
100 publisher.sendParticipantStatus(participantStatus);
104 * Handle a automation composition update message.
106 * @param updateMsg the update message
109 value = "listener.automation_composition_update",
110 description = "AUTOMATION_COMPOSITION_UPDATE messages received")
111 public void handleAutomationCompositionUpdate(AutomationCompositionUpdate updateMsg) {
112 automationCompositionHandler.handleAutomationCompositionUpdate(updateMsg,
113 acElementDefsMap.get(updateMsg.getCompositionId()));
117 * Handle a automation composition state change message.
119 * @param stateChangeMsg the state change message
122 value = "listener.automation_composition_state_change",
123 description = "AUTOMATION_COMPOSITION_STATE_CHANGE messages received")
124 public void handleAutomationCompositionStateChange(AutomationCompositionStateChange stateChangeMsg) {
125 automationCompositionHandler.handleAutomationCompositionStateChange(stateChangeMsg,
126 acElementDefsMap.get(stateChangeMsg.getCompositionId()));
130 * Check if a participant message applies to this participant handler.
132 * @param participantMsg the message to check
133 * @return true if it applies, false otherwise
135 public boolean appliesTo(ParticipantMessage participantMsg) {
136 return participantMsg.appliesTo(participantType, participantId);
140 * Check if a participant message applies to this participant handler.
142 * @param participantMsg the message to check
143 * @return true if it applies, false otherwise
145 public boolean appliesTo(ParticipantAckMessage participantMsg) {
146 return participantMsg.appliesTo(participantType, participantId);
150 * Method to send ParticipantRegister message to automation composition runtime.
152 public void sendParticipantRegister() {
153 var participantRegister = new ParticipantRegister();
154 participantRegister.setParticipantId(participantId);
155 participantRegister.setParticipantType(participantType);
156 participantRegister.setParticipantSupportedElementType(supportedAcElementTypes);
158 publisher.sendParticipantRegister(participantRegister);
162 * Handle a participantRegister Ack message.
164 * @param participantRegisterAckMsg the participantRegisterAck message
166 @Timed(value = "listener.participant_register_ack", description = "PARTICIPANT_REGISTER_ACK messages received")
167 public void handleParticipantRegisterAck(ParticipantRegisterAck participantRegisterAckMsg) {
168 LOGGER.debug("ParticipantRegisterAck message received as responseTo {}",
169 participantRegisterAckMsg.getResponseTo());
170 publisher.sendParticipantStatus(makeHeartbeat(false));
174 * Method to send ParticipantDeregister message to automation composition runtime.
176 public void sendParticipantDeregister() {
177 var participantDeregister = new ParticipantDeregister();
178 participantDeregister.setParticipantId(participantId);
179 participantDeregister.setParticipantType(participantType);
181 publisher.sendParticipantDeregister(participantDeregister);
185 * Handle a participantDeregister Ack message.
187 * @param participantDeregisterAckMsg the participantDeregisterAck message
189 @Timed(value = "listener.participant_deregister_ack", description = "PARTICIPANT_DEREGISTER_ACK messages received")
190 public void handleParticipantDeregisterAck(ParticipantDeregisterAck participantDeregisterAckMsg) {
191 LOGGER.debug("ParticipantDeregisterAck message received as responseTo {}",
192 participantDeregisterAckMsg.getResponseTo());
196 * Handle a ParticipantUpdate message.
198 * @param participantUpdateMsg the ParticipantUpdate message
200 @Timed(value = "listener.participant_update", description = "PARTICIPANT_UPDATE messages received")
201 public void handleParticipantUpdate(ParticipantUpdate participantUpdateMsg) {
202 LOGGER.debug("ParticipantUpdate message received for participantId {}",
203 participantUpdateMsg.getParticipantId());
205 acElementDefsMap.putIfAbsent(participantUpdateMsg.getCompositionId(), new ArrayList<>());
206 if (!participantUpdateMsg.getParticipantDefinitionUpdates().isEmpty()) {
207 // This message is to commission the automation composition
208 for (var participantDefinition : participantUpdateMsg.getParticipantDefinitionUpdates()) {
209 if (participantDefinition.getParticipantType().equals(participantType)) {
210 acElementDefsMap.get(participantUpdateMsg.getCompositionId())
211 .addAll(participantDefinition.getAutomationCompositionElementDefinitionList());
216 // This message is to decommission the automation composition
217 acElementDefsMap.get(participantUpdateMsg.getCompositionId()).clear();
219 sendParticipantUpdateAck(participantUpdateMsg.getMessageId());
223 * Method to send ParticipantUpdateAck message to automation composition runtime.
225 public void sendParticipantUpdateAck(UUID messageId) {
226 var participantUpdateAck = new ParticipantUpdateAck();
227 participantUpdateAck.setResponseTo(messageId);
228 participantUpdateAck.setMessage("Participant Update Ack message");
229 participantUpdateAck.setResult(true);
230 participantUpdateAck.setParticipantId(participantId);
231 participantUpdateAck.setParticipantType(participantType);
232 participantUpdateAck.setState(ParticipantState.ON_LINE);
233 publisher.sendParticipantUpdateAck(participantUpdateAck);
237 * Dispatch a heartbeat for this participant.
239 public void sendHeartbeat() {
240 publisher.sendHeartbeat(makeHeartbeat(false));
244 * Method to send heartbeat to automation composition runtime.
246 public ParticipantStatus makeHeartbeat(boolean responseToParticipantStatusReq) {
247 var heartbeat = new ParticipantStatus();
248 heartbeat.setParticipantId(participantId);
249 heartbeat.setParticipantType(participantType);
250 heartbeat.setState(ParticipantState.ON_LINE);
251 heartbeat.setAutomationCompositionInfoList(getAutomationCompositionInfoList());
253 if (responseToParticipantStatusReq) {
254 List<ParticipantDefinition> participantDefinitionList = new ArrayList<>(acElementDefsMap.size());
255 for (var acElementDefsOnThisParticipant : acElementDefsMap.values()) {
256 var participantDefinition = new ParticipantDefinition();
257 participantDefinition.setParticipantId(participantId);
258 participantDefinition.setParticipantType(participantType);
259 participantDefinition.setAutomationCompositionElementDefinitionList(acElementDefsOnThisParticipant);
260 participantDefinitionList.add(participantDefinition);
262 heartbeat.setParticipantDefinitionUpdates(participantDefinitionList);
268 private List<AutomationCompositionInfo> getAutomationCompositionInfoList() {
269 List<AutomationCompositionInfo> automationCompositionInfoList = new ArrayList<>();
270 for (var entry : automationCompositionHandler.getAutomationCompositionMap().entrySet()) {
271 var acInfo = new AutomationCompositionInfo();
272 acInfo.setAutomationCompositionId(entry.getKey());
273 acInfo.setState(entry.getValue().getState());
274 automationCompositionInfoList.add(acInfo);
276 return automationCompositionInfoList;