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.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
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 participantStatus.setParticipantSupportedElementType(this.supportedAcElementTypes);
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(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(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.setParticipantSupportedElementType(supportedAcElementTypes);
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);
174 publisher.sendParticipantDeregister(participantDeregister);
178 * Handle a participantDeregister Ack message.
180 * @param participantDeregisterAckMsg the participantDeregisterAck message
182 @Timed(value = "listener.participant_deregister_ack", description = "PARTICIPANT_DEREGISTER_ACK messages received")
183 public void handleParticipantDeregisterAck(ParticipantDeregisterAck participantDeregisterAckMsg) {
184 LOGGER.debug("ParticipantDeregisterAck message received as responseTo {}",
185 participantDeregisterAckMsg.getResponseTo());
189 * Handle a ParticipantUpdate message.
191 * @param participantUpdateMsg the ParticipantUpdate message
193 @Timed(value = "listener.participant_update", description = "PARTICIPANT_UPDATE messages received")
194 public void handleParticipantUpdate(ParticipantUpdate participantUpdateMsg) {
195 LOGGER.debug("ParticipantUpdate message received for participantId {}",
196 participantUpdateMsg.getParticipantId());
198 acElementDefsMap.putIfAbsent(participantUpdateMsg.getCompositionId(), new ArrayList<>());
199 if (!participantUpdateMsg.getParticipantDefinitionUpdates().isEmpty()) {
200 // This message is to commission the automation composition
201 for (var participantDefinition : participantUpdateMsg.getParticipantDefinitionUpdates()) {
202 if (participantDefinition.getParticipantId().equals(participantId)) {
203 acElementDefsMap.get(participantUpdateMsg.getCompositionId())
204 .addAll(participantDefinition.getAutomationCompositionElementDefinitionList());
209 // This message is to decommission the automation composition
210 acElementDefsMap.get(participantUpdateMsg.getCompositionId()).clear();
212 sendParticipantUpdateAck(participantUpdateMsg.getMessageId());
216 * Method to send ParticipantUpdateAck message to automation composition runtime.
218 public void sendParticipantUpdateAck(UUID messageId) {
219 var participantUpdateAck = new ParticipantUpdateAck();
220 participantUpdateAck.setResponseTo(messageId);
221 participantUpdateAck.setMessage("Participant Update Ack message");
222 participantUpdateAck.setResult(true);
223 participantUpdateAck.setParticipantId(participantId);
224 participantUpdateAck.setState(ParticipantState.ON_LINE);
225 publisher.sendParticipantUpdateAck(participantUpdateAck);
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(getAutomationCompositionInfoList());
244 if (responseToParticipantStatusReq) {
245 List<ParticipantDefinition> participantDefinitionList = new ArrayList<>(acElementDefsMap.size());
246 for (var acElementDefsOnThisParticipant : acElementDefsMap.values()) {
247 var participantDefinition = new ParticipantDefinition();
248 participantDefinition.setParticipantId(participantId);
249 participantDefinition.setAutomationCompositionElementDefinitionList(acElementDefsOnThisParticipant);
250 participantDefinitionList.add(participantDefinition);
252 heartbeat.setParticipantDefinitionUpdates(participantDefinitionList);
258 private List<AutomationCompositionInfo> getAutomationCompositionInfoList() {
259 List<AutomationCompositionInfo> automationCompositionInfoList = new ArrayList<>();
260 for (var entry : automationCompositionHandler.getAutomationCompositionMap().entrySet()) {
261 var acInfo = new AutomationCompositionInfo();
262 acInfo.setAutomationCompositionId(entry.getKey());
263 acInfo.setState(entry.getValue().getState());
264 automationCompositionInfoList.add(acInfo);
266 return automationCompositionInfoList;