1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
|
/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2021-2022 Nordix Foundation.
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* SPDX-License-Identifier: Apache-2.0
* ============LICENSE_END=========================================================
*/
package org.onap.policy.clamp.controlloop.participant.http.main.handler;
import java.io.Closeable;
import java.io.IOException;
import java.lang.invoke.MethodHandles;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.UUID;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
import java.util.concurrent.Future;
import java.util.stream.Collectors;
import javax.validation.ConstraintViolation;
import javax.validation.Validation;
import javax.validation.ValidationException;
import lombok.Setter;
import org.apache.commons.lang3.tuple.Pair;
import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoopElement;
import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoopOrderedState;
import org.onap.policy.clamp.controlloop.models.controlloop.concepts.ControlLoopState;
import org.onap.policy.clamp.controlloop.models.messages.dmaap.participant.ParticipantMessageType;
import org.onap.policy.clamp.controlloop.participant.http.main.models.ConfigRequest;
import org.onap.policy.clamp.controlloop.participant.http.main.webclient.ClHttpClient;
import org.onap.policy.clamp.controlloop.participant.intermediary.api.ControlLoopElementListener;
import org.onap.policy.clamp.controlloop.participant.intermediary.api.ParticipantIntermediaryApi;
import org.onap.policy.common.utils.coder.Coder;
import org.onap.policy.common.utils.coder.CoderException;
import org.onap.policy.common.utils.coder.StandardCoder;
import org.onap.policy.models.base.PfModelException;
import org.onap.policy.models.tosca.authorative.concepts.ToscaConceptIdentifier;
import org.onap.policy.models.tosca.authorative.concepts.ToscaNodeTemplate;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpStatus;
import org.springframework.stereotype.Component;
/**
* This class handles implementation of controlLoopElement updates.
*/
@Component
public class ControlLoopElementHandler implements ControlLoopElementListener, Closeable {
private static final Coder CODER = new StandardCoder();
private static final Logger LOGGER = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
private ExecutorService executor = Executors.newFixedThreadPool(Runtime.getRuntime().availableProcessors());
private Map<ToscaConceptIdentifier, Pair<Integer, String>> restResponseMap = new ConcurrentHashMap<>();
@Setter
private ParticipantIntermediaryApi intermediaryApi;
/**
* Handle controlLoopElement statistics.
*
* @param controlLoopElementId controlloop element id
*/
@Override
public void handleStatistics(UUID controlLoopElementId) throws PfModelException {
// Implementation not needed for http participant
}
/**
* Handle a control loop element state change.
*
* @param controlLoopElementId the ID of the control loop element
* @param currentState the current state of the control loop element
* @param newState the state to which the control loop element is changing to
* @throws PfModelException in case of a model exception
*/
@Override
public void controlLoopElementStateChange(ToscaConceptIdentifier controlLoopId, UUID controlLoopElementId,
ControlLoopState currentState, ControlLoopOrderedState newState) throws PfModelException {
switch (newState) {
case UNINITIALISED:
intermediaryApi.updateControlLoopElementState(controlLoopId,
controlLoopElementId, newState, ControlLoopState.UNINITIALISED,
ParticipantMessageType.CONTROL_LOOP_STATE_CHANGE);
break;
case PASSIVE:
intermediaryApi.updateControlLoopElementState(controlLoopId,
controlLoopElementId, newState, ControlLoopState.PASSIVE,
ParticipantMessageType.CONTROL_LOOP_STATE_CHANGE);
break;
case RUNNING:
intermediaryApi.updateControlLoopElementState(controlLoopId,
controlLoopElementId, newState, ControlLoopState.RUNNING,
ParticipantMessageType.CONTROL_LOOP_STATE_CHANGE);
break;
default:
LOGGER.warn("Cannot transition from state {} to state {}", currentState, newState);
break;
}
}
/**
* Callback method to handle an update on a control loop element.
*
* @param element the information on the control loop element
* @param nodeTemplate toscaNodeTemplate
*/
@Override
public void controlLoopElementUpdate(ToscaConceptIdentifier controlLoopId, ControlLoopElement element,
ToscaNodeTemplate nodeTemplate) {
try {
var configRequest = CODER.convert(nodeTemplate.getProperties(), ConfigRequest.class);
Set<ConstraintViolation<ConfigRequest>> violations = Validation.buildDefaultValidatorFactory()
.getValidator().validate(configRequest);
if (violations.isEmpty()) {
invokeHttpClient(configRequest);
List<Pair<Integer, String>> failedResponseStatus = restResponseMap.values().stream()
.filter(response -> !HttpStatus.valueOf(response.getKey())
.is2xxSuccessful()).collect(Collectors.toList());
if (failedResponseStatus.isEmpty()) {
intermediaryApi.updateControlLoopElementState(controlLoopId, element.getId(),
ControlLoopOrderedState.PASSIVE, ControlLoopState.PASSIVE,
ParticipantMessageType.CONTROL_LOOP_STATE_CHANGE);
} else {
LOGGER.error("Error on Invoking the http request: {}", failedResponseStatus);
}
} else {
LOGGER.error("Violations found in the config request parameters: {}", violations);
throw new ValidationException("Constraint violations in the config request");
}
} catch (CoderException | ValidationException | InterruptedException | ExecutionException e) {
LOGGER.error("Error invoking the http request for the config ", e);
}
}
/**
* Invoke a runnable thread to execute http requests.
* @param configRequest ConfigRequest
*/
public void invokeHttpClient(ConfigRequest configRequest) throws ExecutionException, InterruptedException {
// Invoke runnable thread to execute https requests of all config entities
Future<Map> result = executor.submit(new ClHttpClient(configRequest, restResponseMap), restResponseMap);
if (!result.get().isEmpty()) {
LOGGER.debug("Http Request Completed: {}", result.isDone());
}
}
/**
* Closes this stream and releases any system resources associated
* with it. If the stream is already closed then invoking this
* method has no effect.
*
* @throws IOException if an I/O error occurs
*/
@Override
public void close() throws IOException {
executor.shutdown();
}
}
|
