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.messages.dmaap.participant.AutomationCompositionStateChange;
39 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.AutomationCompositionUpdate;
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.ParticipantRegister;
45 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantRegisterAck;
46 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantStatus;
47 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantStatusReq;
48 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantUpdate;
49 import org.onap.policy.clamp.models.acm.messages.dmaap.participant.ParticipantUpdateAck;
50 import org.onap.policy.models.tosca.authorative.concepts.ToscaConceptIdentifier;
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 ToscaConceptIdentifier participantType;
66 private final ToscaConceptIdentifier participantId;
68 private final AutomationCompositionHandler automationCompositionHandler;
69 private final ParticipantMessagePublisher publisher;
71 private final Map<UUID, List<AutomationCompositionElementDefinition>> acElementDefsMap = new HashMap<>();
74 * Constructor, set the participant ID and sender.
76 * @param parameters the parameters of the participant
77 * @param publisher the publisher for sending responses to messages
79 public ParticipantHandler(ParticipantParameters parameters, ParticipantMessagePublisher publisher,
80 AutomationCompositionHandler automationCompositionHandler) {
81 this.participantType = parameters.getIntermediaryParameters().getParticipantType();
82 this.participantId = parameters.getIntermediaryParameters().getParticipantId();
83 this.publisher = publisher;
84 this.automationCompositionHandler = automationCompositionHandler;
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 handleAutomationCompositionUpdate(AutomationCompositionUpdate updateMsg) {
107 automationCompositionHandler.handleAutomationCompositionUpdate(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 * Check if a participant message applies to this participant handler.
127 * @param participantMsg the message to check
128 * @return true if it applies, false otherwise
130 public boolean appliesTo(ParticipantMessage participantMsg) {
131 return participantMsg.appliesTo(participantType, participantId);
135 * Check if a participant message applies to this participant handler.
137 * @param participantMsg the message to check
138 * @return true if it applies, false otherwise
140 public boolean appliesTo(ParticipantAckMessage participantMsg) {
141 return participantMsg.appliesTo(participantType, participantId);
145 * Method to send ParticipantRegister message to automation composition runtime.
147 public void sendParticipantRegister() {
148 var participantRegister = new ParticipantRegister();
149 participantRegister.setParticipantId(participantId);
150 participantRegister.setParticipantType(participantType);
152 publisher.sendParticipantRegister(participantRegister);
156 * Handle a participantRegister Ack message.
158 * @param participantRegisterAckMsg the participantRegisterAck message
160 @Timed(value = "listener.participant_register_ack", description = "PARTICIPANT_REGISTER_ACK messages received")
161 public void handleParticipantRegisterAck(ParticipantRegisterAck participantRegisterAckMsg) {
162 LOGGER.debug("ParticipantRegisterAck message received as responseTo {}",
163 participantRegisterAckMsg.getResponseTo());
164 publisher.sendParticipantStatus(makeHeartbeat(false));
168 * Method to send ParticipantDeregister message to automation composition runtime.
170 public void sendParticipantDeregister() {
171 var participantDeregister = new ParticipantDeregister();
172 participantDeregister.setParticipantId(participantId);
173 participantDeregister.setParticipantType(participantType);
175 publisher.sendParticipantDeregister(participantDeregister);
179 * Handle a participantDeregister Ack message.
181 * @param participantDeregisterAckMsg the participantDeregisterAck message
183 @Timed(value = "listener.participant_deregister_ack", description = "PARTICIPANT_DEREGISTER_ACK messages received")
184 public void handleParticipantDeregisterAck(ParticipantDeregisterAck participantDeregisterAckMsg) {
185 LOGGER.debug("ParticipantDeregisterAck message received as responseTo {}",
186 participantDeregisterAckMsg.getResponseTo());
190 * Handle a ParticipantUpdate message.
192 * @param participantUpdateMsg the ParticipantUpdate message
194 @Timed(value = "listener.participant_update", description = "PARTICIPANT_UPDATE messages received")
195 public void handleParticipantUpdate(ParticipantUpdate participantUpdateMsg) {
196 LOGGER.debug("ParticipantUpdate message received for participantId {}",
197 participantUpdateMsg.getParticipantId());
199 acElementDefsMap.putIfAbsent(participantUpdateMsg.getCompositionId(), new ArrayList<>());
200 if (!participantUpdateMsg.getParticipantDefinitionUpdates().isEmpty()) {
201 // This message is to commission the automation composition
202 for (var participantDefinition : participantUpdateMsg.getParticipantDefinitionUpdates()) {
203 if (participantDefinition.getParticipantType().equals(participantType)) {
204 acElementDefsMap.get(participantUpdateMsg.getCompositionId())
205 .addAll(participantDefinition.getAutomationCompositionElementDefinitionList());
210 // This message is to decommission the automation composition
211 acElementDefsMap.get(participantUpdateMsg.getCompositionId()).clear();
213 sendParticipantUpdateAck(participantUpdateMsg.getMessageId());
217 * Method to send ParticipantUpdateAck message to automation composition runtime.
219 public void sendParticipantUpdateAck(UUID messageId) {
220 var participantUpdateAck = new ParticipantUpdateAck();
221 participantUpdateAck.setResponseTo(messageId);
222 participantUpdateAck.setMessage("Participant Update Ack message");
223 participantUpdateAck.setResult(true);
224 participantUpdateAck.setParticipantId(participantId);
225 participantUpdateAck.setParticipantType(participantType);
226 participantUpdateAck.setState(ParticipantState.ON_LINE);
227 publisher.sendParticipantUpdateAck(participantUpdateAck);
231 * Dispatch a heartbeat for this participant.
233 public void sendHeartbeat() {
234 publisher.sendHeartbeat(makeHeartbeat(false));
238 * Method to send heartbeat to automation composition runtime.
240 public ParticipantStatus makeHeartbeat(boolean responseToParticipantStatusReq) {
241 var heartbeat = new ParticipantStatus();
242 heartbeat.setParticipantId(participantId);
243 heartbeat.setParticipantType(participantType);
244 heartbeat.setState(ParticipantState.ON_LINE);
245 heartbeat.setAutomationCompositionInfoList(getAutomationCompositionInfoList());
247 if (responseToParticipantStatusReq) {
248 List<ParticipantDefinition> participantDefinitionList = new ArrayList<>(acElementDefsMap.size());
249 for (var acElementDefsOnThisParticipant : acElementDefsMap.values()) {
250 var participantDefinition = new ParticipantDefinition();
251 participantDefinition.setParticipantId(participantId);
252 participantDefinition.setParticipantType(participantType);
253 participantDefinition.setAutomationCompositionElementDefinitionList(acElementDefsOnThisParticipant);
254 participantDefinitionList.add(participantDefinition);
256 heartbeat.setParticipantDefinitionUpdates(participantDefinitionList);
262 private List<AutomationCompositionInfo> getAutomationCompositionInfoList() {
263 List<AutomationCompositionInfo> automationCompositionInfoList = new ArrayList<>();
264 for (var entry : automationCompositionHandler.getAutomationCompositionMap().entrySet()) {
265 var acInfo = new AutomationCompositionInfo();
266 acInfo.setAutomationCompositionId(entry.getKey());
267 acInfo.setState(entry.getValue().getState());
268 automationCompositionInfoList.add(acInfo);
270 return automationCompositionInfoList;