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
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
|
/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2019 Bell Canada. All rights reserved.
* ================================================================================
* 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.
* ============LICENSE_END=========================================================
*/
package org.onap.policy.controlloop.actor.cds;
import com.google.common.base.Preconditions;
import com.google.common.base.Strings;
import com.google.protobuf.InvalidProtocolBufferException;
import com.google.protobuf.Struct;
import com.google.protobuf.Struct.Builder;
import com.google.protobuf.util.JsonFormat;
import io.grpc.Status;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Optional;
import java.util.UUID;
import java.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicReference;
import org.onap.ccsdk.cds.controllerblueprints.common.api.ActionIdentifiers;
import org.onap.ccsdk.cds.controllerblueprints.common.api.CommonHeader;
import org.onap.ccsdk.cds.controllerblueprints.common.api.EventType;
import org.onap.ccsdk.cds.controllerblueprints.processing.api.ExecutionServiceInput;
import org.onap.ccsdk.cds.controllerblueprints.processing.api.ExecutionServiceOutput;
import org.onap.policy.cds.CdsResponse;
import org.onap.policy.cds.api.CdsProcessorListener;
import org.onap.policy.cds.client.CdsProcessorGrpcClient;
import org.onap.policy.cds.properties.CdsServerProperties;
import org.onap.policy.common.utils.coder.CoderException;
import org.onap.policy.controlloop.ControlLoopOperation;
import org.onap.policy.controlloop.VirtualControlLoopEvent;
import org.onap.policy.controlloop.actor.cds.constants.CdsActorConstants;
import org.onap.policy.controlloop.actor.cds.request.CdsActionRequest;
import org.onap.policy.controlloop.actorserviceprovider.spi.Actor;
import org.onap.policy.controlloop.policy.Policy;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* CDS Actor service-provider implementation. This is a deploy dark feature for El-Alto release.
*/
public class CdsActorServiceProvider implements Actor {
private static final Logger LOGGER = LoggerFactory.getLogger(CdsActorServiceProvider.class);
/**
* {@inheritDoc}.
*/
@Override
public String actor() {
return CdsActorConstants.CDS_ACTOR;
}
/**
* {@inheritDoc}. Note: This is a placeholder for now.
*/
@Override
public List<String> recipes() {
return new ArrayList<>();
}
/**
* {@inheritDoc}. Note: This is a placeholder for now.
*/
@Override
public List<String> recipeTargets(final String recipe) {
return new ArrayList<>();
}
/**
* {@inheritDoc}. Note: This is a placeholder for now.
*/
@Override
public List<String> recipePayloads(final String recipe) {
return new ArrayList<>();
}
/**
* Build the CDS ExecutionServiceInput request from the policy object and the AAI enriched parameters. TO-DO: Avoid
* leaking Exceptions to the Kie Session thread. TBD item for Frankfurt release.
*
* @param onset the event that is reporting the alert for policy to perform an action.
* @param operation the control loop operation specifying the actor, operation, target, etc.
* @param policy the policy specified from the yaml generated by CLAMP or through Policy API.
* @param aaiParams Map of enriched AAI attributes in node.attribute notation.
* @return an Optional ExecutionServiceInput instance if valid else an Optional empty object is returned.
*/
public Optional<ExecutionServiceInput> constructRequest(VirtualControlLoopEvent onset,
ControlLoopOperation operation, Policy policy, Map<String, String> aaiParams) {
// For the current operational TOSCA policy model (yaml) CBA name and version are embedded in the payload
// section, with the new policy type model being proposed in Frankfurt we will be able to move it out.
Map<String, String> payload = policy.getPayload();
if (!validateCdsMandatoryParams(policy)) {
return Optional.empty();
}
String cbaName = payload.get(CdsActorConstants.KEY_CBA_NAME);
String cbaVersion = payload.get(CdsActorConstants.KEY_CBA_VERSION);
// Retain only the payload by removing CBA name and version once they are extracted
// to be put in CDS request header.
payload.remove(CdsActorConstants.KEY_CBA_NAME);
payload.remove(CdsActorConstants.KEY_CBA_VERSION);
// Embed payload from policy to ConfigDeployRequest object, serialize and inject into grpc request.
String cbaActionName = policy.getRecipe();
CdsActionRequest request = new CdsActionRequest();
request.setPolicyPayload(payload);
request.setActionName(cbaActionName);
request.setResolutionKey(UUID.randomUUID().toString());
// Inject AAI properties into payload map. Offer flexibility to the usecase
// implementation to inject whatever AAI parameters are of interest to them.
// E.g. For vFW usecase El-Alto inject service-instance-id, generic-vnf-id as needed by CDS.
request.setAaiProperties(aaiParams);
// Inject any additional event parameters that may be present in the onset event
if (onset.getAdditionalEventParams() != null) {
request.setAdditionalEventParams(onset.getAdditionalEventParams());
}
Builder struct = Struct.newBuilder();
try {
String requestStr = request.generateCdsPayload();
Preconditions.checkState(!Strings.isNullOrEmpty(requestStr), "Unable to build "
+ "config-deploy-request from payload parameters: {}", payload);
JsonFormat.parser().merge(requestStr, struct);
} catch (InvalidProtocolBufferException | CoderException e) {
LOGGER.error("Failed to embed CDS payload string into the input request. blueprint({}:{}) for action({})",
cbaName, cbaVersion, cbaActionName, e);
return Optional.empty();
}
// Build CDS gRPC request common-header
CommonHeader commonHeader = CommonHeader.newBuilder()
.setOriginatorId(CdsActorConstants.ORIGINATOR_ID)
.setRequestId(onset.getRequestId().toString())
.setSubRequestId(operation.getSubRequestId())
.build();
// Build CDS gRPC request action-identifier
ActionIdentifiers actionIdentifiers = ActionIdentifiers.newBuilder()
.setBlueprintName(cbaName)
.setBlueprintVersion(cbaVersion)
.setActionName(cbaActionName)
.setMode(CdsActorConstants.CDS_MODE)
.build();
// Finally build the ExecutionServiceInput gRPC request object.
ExecutionServiceInput executionServiceInput = ExecutionServiceInput.newBuilder()
.setCommonHeader(commonHeader)
.setActionIdentifiers(actionIdentifiers)
.setPayload(struct.build())
.build();
return Optional.of(executionServiceInput);
}
private boolean validateCdsMandatoryParams(Policy policy) {
if (policy == null || policy.getPayload() == null) {
return false;
}
Map<String, String> payload = policy.getPayload();
String cbaName = payload.get(CdsActorConstants.KEY_CBA_NAME);
String cbaVersion = payload.get(CdsActorConstants.KEY_CBA_VERSION);
String cbaActionName = policy.getRecipe();
return !Strings.isNullOrEmpty(cbaName) && !Strings.isNullOrEmpty(cbaVersion) && !Strings
.isNullOrEmpty(cbaActionName);
}
public class CdsActorServiceManager implements CdsProcessorListener {
private final AtomicReference<String> cdsStatus = new AtomicReference<>();
/**
* {@inheritDoc}.
*/
@Override
public void onMessage(final ExecutionServiceOutput message) {
LOGGER.info("Received notification from CDS: {}", message);
EventType eventType = message.getStatus().getEventType();
switch (eventType) {
case EVENT_COMPONENT_FAILURE:
cdsStatus.compareAndSet(null, CdsActorConstants.FAILED);
break;
case EVENT_COMPONENT_PROCESSING:
cdsStatus.compareAndSet(null, CdsActorConstants.PROCESSING);
break;
case EVENT_COMPONENT_EXECUTED:
cdsStatus.compareAndSet(null, CdsActorConstants.SUCCESS);
break;
default:
cdsStatus.compareAndSet(null, CdsActorConstants.FAILED);
break;
}
}
/**
* {@inheritDoc}.
*/
@Override
public void onError(final Throwable throwable) {
Status status = Status.fromThrowable(throwable);
cdsStatus.compareAndSet(null, CdsActorConstants.ERROR);
LOGGER.error("Failed processing blueprint {} {}", status, throwable);
}
/**
* Send gRPC request to CDS to execute the blueprint.
*
* @param cdsClient CDS grpc client object.
* @param cdsProps CDS properties.
* @param executionServiceInput a valid CDS grpc request object.
* @return the cds response.
*/
public CdsResponse sendRequestToCds(CdsProcessorGrpcClient cdsClient, CdsServerProperties cdsProps,
ExecutionServiceInput executionServiceInput) {
try {
LOGGER.trace("Start CdsActorServiceProvider.executeCdsBlueprintProcessor {}.", executionServiceInput);
// TO-DO: Handle requests asynchronously once the callback support is added to actors.
CountDownLatch countDownLatch = cdsClient.sendRequest(executionServiceInput);
boolean status = countDownLatch.await(cdsProps.getTimeout(), TimeUnit.SECONDS);
if (!status) {
cdsStatus.compareAndSet(null, CdsActorConstants.TIMED_OUT);
}
LOGGER.info("CDS status response {}", getCdsStatus());
} catch (InterruptedException ex) {
LOGGER.error("Caught exception in executeCdsBlueprintProcessor in CdsActorServiceProvider: ", ex);
cdsStatus.compareAndSet(null, CdsActorConstants.INTERRUPTED);
Thread.currentThread().interrupt();
}
LOGGER.info("Status of the CDS gRPC request is: {}", getCdsStatus());
CdsResponse response = new CdsResponse();
response.setRequestId(
executionServiceInput != null && executionServiceInput.getCommonHeader() != null
? executionServiceInput.getCommonHeader().getRequestId() : null);
response.setStatus(this.getCdsStatus());
return response;
}
String getCdsStatus() {
return cdsStatus.get();
}
}
}
|