2 * ============LICENSE_START=======================================================
3 * Copyright (C) 2021 Nordix Foundation.
4 * ================================================================================
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
17 * SPDX-License-Identifier: Apache-2.0
18 * ============LICENSE_END=========================================================
21 package org.onap.policy.clamp.controlloop.participant.http.main.handler;
23 import java.io.Closeable;
24 import java.io.IOException;
25 import java.lang.invoke.MethodHandles;
28 import java.util.UUID;
29 import java.util.concurrent.ConcurrentHashMap;
30 import java.util.concurrent.ExecutorService;
31 import java.util.concurrent.Executors;
32 import javax.validation.ConstraintViolation;
33 import javax.validation.Validation;
34 import javax.validation.ValidationException;
36 import org.apache.commons.lang3.tuple.Pair;
37 import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoopElement;
38 import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoopOrderedState;
39 import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoopState;
40 import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantMessageType;
41 import org.onap.policy.clamp.controlloop.participant.http.main.models.ConfigRequest;
42 import org.onap.policy.clamp.controlloop.participant.http.main.webclient.ClHttpClient;
43 import org.onap.policy.clamp.controlloop.participant.intermediary.api.ControlLoopElementListener;
44 import org.onap.policy.clamp.controlloop.participant.intermediary.api.ParticipantIntermediaryApi;
45 import org.onap.policy.common.utils.coder.Coder;
46 import org.onap.policy.common.utils.coder.CoderException;
47 import org.onap.policy.common.utils.coder.StandardCoder;
48 import org.onap.policy.models.base.PfModelException;
49 import org.onap.policy.models.tosca.authorative.concepts.ToscaConceptIdentifier;
50 import org.onap.policy.models.tosca.authorative.concepts.ToscaNodeTemplate;
51 import org.slf4j.Logger;
52 import org.slf4j.LoggerFactory;
53 import org.springframework.stereotype.Component;
56 * This class handles implementation of controlLoopElement updates.
59 public class ControlLoopElementHandler implements ControlLoopElementListener, Closeable {
61 private static final Coder CODER = new StandardCoder();
63 private static final Logger LOGGER = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
65 private ExecutorService executor = Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors());
67 private Map<ToscaConceptIdentifier, Pair<Integer, String>> restResponseMap = new ConcurrentHashMap<>();
70 private ParticipantIntermediaryApi intermediaryApi;
73 * Handle controlLoopElement statistics.
75 * @param controlLoopElementId controlloop element id
78 public void handleStatistics(UUID controlLoopElementId) throws PfModelException {
79 // Implementation not needed for http participant
84 * Handle a control loop element state change.
86 * @param controlLoopElementId the ID of the control loop element
87 * @param currentState the current state of the control loop element
88 * @param newState the state to which the control loop element is changing to
89 * @throws PfModelException in case of a model exception
92 public void controlLoopElementStateChange(ToscaConceptIdentifier controlLoopId, UUID controlLoopElementId,
93 ControlLoopState currentState, ControlLoopOrderedState newState) throws PfModelException {
96 intermediaryApi.updateControlLoopElementState(controlLoopId,
97 controlLoopElementId, newState, ControlLoopState.UNINITIALISED,
98 ParticipantMessageType.CONTROL_LOOP_STATE_CHANGE);
101 intermediaryApi.updateControlLoopElementState(controlLoopId,
102 controlLoopElementId, newState, ControlLoopState.PASSIVE,
103 ParticipantMessageType.CONTROL_LOOP_STATE_CHANGE);
106 intermediaryApi.updateControlLoopElementState(controlLoopId,
107 controlLoopElementId, newState, ControlLoopState.RUNNING,
108 ParticipantMessageType.CONTROL_LOOP_STATE_CHANGE);
111 LOGGER.warn("Cannot transition from state {} to state {}", currentState, newState);
117 * Callback method to handle an update on a control loop element.
119 * @param element the information on the control loop element
120 * @param nodeTemplate toscaNodeTemplate
123 public void controlLoopElementUpdate(ToscaConceptIdentifier controlLoopId, ControlLoopElement element,
124 ToscaNodeTemplate nodeTemplate) {
126 var configRequest = CODER.convert(nodeTemplate.getProperties(), ConfigRequest.class);
127 Set<ConstraintViolation<ConfigRequest>> violations = Validation.buildDefaultValidatorFactory()
128 .getValidator().validate(configRequest);
129 if (violations.isEmpty()) {
130 invokeHttpClient(configRequest);
131 intermediaryApi.updateControlLoopElementState(controlLoopId, element.getId(),
132 ControlLoopOrderedState.PASSIVE, ControlLoopState.PASSIVE,
133 ParticipantMessageType.CONTROL_LOOP_STATE_CHANGE);
135 LOGGER.error("Violations found in the config request parameters: {}", violations);
136 throw new ValidationException("Constraint violations in the config request");
138 } catch (CoderException | ValidationException e) {
139 LOGGER.error("Error invoking the http request for the config ", e);
144 * Invoke a runnable thread to execute http requests.
145 * @param configRequest ConfigRequest
147 public void invokeHttpClient(ConfigRequest configRequest) {
148 // Invoke runnable thread to execute https requests of all config entities
149 executor.execute(new ClHttpClient(configRequest, restResponseMap));
153 * Closes this stream and releases any system resources associated
154 * with it. If the stream is already closed then invoking this
155 * method has no effect.
157 * @throws IOException if an I/O error occurs
160 public void close() throws IOException {