2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2021 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.controlloop.participant.policy.main.handler;
25 import java.time.Instant;
26 import java.util.LinkedHashMap;
28 import java.util.Map.Entry;
29 import java.util.UUID;
31 import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ClElementStatistics;
32 import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoopElement;
33 import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoopOrderedState;
34 import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoopState;
35 import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantMessageType;
36 import org.onap.policy.clamp.controlloop.participant.intermediary.api.ControlLoopElementListener;
37 import org.onap.policy.clamp.controlloop.participant.intermediary.api.ParticipantIntermediaryApi;
38 import org.onap.policy.clamp.controlloop.participant.policy.client.PolicyApiHttpClient;
39 import org.onap.policy.clamp.controlloop.participant.policy.client.PolicyPapHttpClient;
40 import org.onap.policy.models.base.PfModelException;
41 import org.onap.policy.models.base.PfModelRuntimeException;
42 import org.onap.policy.models.tosca.authorative.concepts.ToscaConceptIdentifier;
43 import org.onap.policy.models.tosca.authorative.concepts.ToscaNodeTemplate;
44 import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicy;
45 import org.onap.policy.models.tosca.authorative.concepts.ToscaPolicyType;
46 import org.onap.policy.models.tosca.authorative.concepts.ToscaServiceTemplate;
47 import org.slf4j.Logger;
48 import org.slf4j.LoggerFactory;
49 import org.springframework.stereotype.Component;
52 * This class handles implementation of controlLoopElement updates.
55 public class ControlLoopElementHandler implements ControlLoopElementListener {
57 private static final Logger LOGGER = LoggerFactory.getLogger(ControlLoopElementHandler.class);
58 private final Map<String, String> policyTypeMap = new LinkedHashMap<>();
59 private final Map<String, String> policyMap = new LinkedHashMap<>();
61 private final PolicyApiHttpClient apiHttpClient;
62 private final PolicyPapHttpClient papHttpClient;
65 private ParticipantIntermediaryApi intermediaryApi;
70 * @param apiHttpClient the Policy Api Http Client
71 * @param papHttpClient the Policy Pap Http Client
73 public ControlLoopElementHandler(PolicyApiHttpClient apiHttpClient, PolicyPapHttpClient papHttpClient) {
74 this.papHttpClient = papHttpClient;
75 this.apiHttpClient = apiHttpClient;
79 * Callback method to handle a control loop element state change.
81 * @param controlLoopId the ID of the control loop
82 * @param controlLoopElementId the ID of the control loop element
83 * @param currentState the current state of the control loop element
84 * @param orderedState the state to which the control loop element is changing to
85 * @throws PfModelException in case of an exception
88 public void controlLoopElementStateChange(ToscaConceptIdentifier controlLoopId,
89 UUID controlLoopElementId, ControlLoopState currentState,
90 ControlLoopOrderedState orderedState) throws PfModelException {
91 switch (orderedState) {
94 deletePolicyData(controlLoopId, controlLoopElementId, orderedState);
95 intermediaryApi.updateControlLoopElementState(controlLoopId,
96 controlLoopElementId, orderedState, ControlLoopState.UNINITIALISED,
97 ParticipantMessageType.CONTROL_LOOP_STATE_CHANGE);
98 } catch (PfModelRuntimeException e) {
99 LOGGER.debug("Deleting policy data failed", e);
104 undeployPolicies(controlLoopElementId, orderedState);
105 } catch (PfModelRuntimeException e) {
106 LOGGER.debug("Undeploying policies failed - no policies to undeploy {}", controlLoopElementId);
108 intermediaryApi.updateControlLoopElementState(controlLoopId,
109 controlLoopElementId, orderedState, ControlLoopState.PASSIVE,
110 ParticipantMessageType.CONTROL_LOOP_STATE_CHANGE);
114 deployPolicies(controlLoopId, controlLoopElementId, orderedState);
115 } catch (PfModelRuntimeException e) {
116 LOGGER.debug("Deploying policies failed {}", controlLoopElementId);
120 LOGGER.debug("Unknown orderedstate {}", orderedState);
125 private void deletePolicyData(ToscaConceptIdentifier controlLoopId,
126 UUID controlLoopElementId, ControlLoopOrderedState newState) {
127 // Delete all policies of this controlLoop from policy framework
128 for (Entry<String, String> policy : policyMap.entrySet()) {
129 apiHttpClient.deletePolicy(policy.getKey(), policy.getValue());
132 // Delete all policy types of this control loop from policy framework
133 for (Entry<String, String> policyType : policyTypeMap.entrySet()) {
134 apiHttpClient.deletePolicyType(policyType.getKey(), policyType.getValue());
136 policyTypeMap.clear();
137 intermediaryApi.updateControlLoopElementState(controlLoopId,
138 controlLoopElementId, newState, ControlLoopState.UNINITIALISED,
139 ParticipantMessageType.CONTROL_LOOP_STATE_CHANGE);
142 private void deployPolicies(ToscaConceptIdentifier controlLoopId, UUID controlLoopElementId,
143 ControlLoopOrderedState newState) {
144 // Deploy all policies of this controlLoop from Policy Framework
145 if (policyMap.entrySet() != null) {
146 for (Entry<String, String> policy : policyMap.entrySet()) {
147 papHttpClient.handlePolicyDeployOrUndeploy(policy.getKey(), policy.getValue(), "POST");
149 LOGGER.debug("Policies deployed to {} successfully", controlLoopElementId);
151 LOGGER.debug("No policies to deploy to {}", controlLoopElementId);
153 intermediaryApi.updateControlLoopElementState(controlLoopId,
154 controlLoopElementId, newState, ControlLoopState.RUNNING,
155 ParticipantMessageType.CONTROL_LOOP_STATE_CHANGE);
158 private void undeployPolicies(UUID controlLoopElementId, ControlLoopOrderedState newState) {
159 // Undeploy all policies of this controlloop from Policy Framework
160 if (policyMap.entrySet() != null) {
161 for (Entry<String, String> policy : policyMap.entrySet()) {
162 papHttpClient.handlePolicyDeployOrUndeploy(policy.getKey(), policy.getValue(), "DELETE");
164 LOGGER.debug("Undeployed policies from {} successfully", controlLoopElementId);
166 LOGGER.debug("No policies are deployed to {}", controlLoopElementId);
171 * Callback method to handle an update on a control loop element.
173 * @param element the information on the control loop element
174 * @param clElementDefinition toscaNodeTemplate
175 * @throws PfModelException in case of an exception
178 public void controlLoopElementUpdate(ToscaConceptIdentifier controlLoopId, ControlLoopElement element,
179 ToscaNodeTemplate clElementDefinition)
180 throws PfModelException {
181 intermediaryApi.updateControlLoopElementState(controlLoopId, element.getId(), element.getOrderedState(),
182 ControlLoopState.PASSIVE, ParticipantMessageType.CONTROL_LOOP_UPDATE);
183 ToscaServiceTemplate controlLoopDefinition = element.getToscaServiceTemplateFragment();
184 if (controlLoopDefinition.getToscaTopologyTemplate() != null) {
185 if (controlLoopDefinition.getPolicyTypes() != null) {
186 for (ToscaPolicyType policyType : controlLoopDefinition.getPolicyTypes().values()) {
187 policyTypeMap.put(policyType.getName(), policyType.getVersion());
189 LOGGER.debug("Found Policy Types in control loop definition: {} , Creating Policy Types",
190 controlLoopDefinition.getName());
191 apiHttpClient.createPolicyType(controlLoopDefinition);
193 if (controlLoopDefinition.getToscaTopologyTemplate().getPolicies() != null) {
194 for (Map<String, ToscaPolicy> foundPolicyMap : controlLoopDefinition.getToscaTopologyTemplate()
196 for (ToscaPolicy policy : foundPolicyMap.values()) {
197 policyMap.put(policy.getName(), policy.getVersion());
200 LOGGER.debug("Found Policies in control loop definition: {} , Creating Policies",
201 controlLoopDefinition.getName());
202 apiHttpClient.createPolicy(controlLoopDefinition);
208 * Handle controlLoopElement statistics.
210 * @param controlLoopElementId controlloop element id
213 public void handleStatistics(UUID controlLoopElementId) throws PfModelException {
214 var clElement = intermediaryApi.getControlLoopElement(controlLoopElementId);
215 if (clElement != null) {
216 var clElementStatistics = new ClElementStatistics();
217 clElementStatistics.setControlLoopState(clElement.getState());
218 clElementStatistics.setTimeStamp(Instant.now());
219 intermediaryApi.updateControlLoopElementStatistics(controlLoopElementId, clElementStatistics);