gerrit.onap Code Review - policy/models.git/blob

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * Copyright (C) 2019 Bell Canada. All rights reserved.
   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
   8  *
   9  *      http://www.apache.org/licenses/LICENSE-2.0
  10  *
  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.
  16  * ============LICENSE_END=========================================================
  17  */
  18
  19 package org.onap.policy.controlloop.actor.cds;
  20
  21 import com.google.common.base.Preconditions;
  22 import com.google.common.base.Strings;
  23 import com.google.protobuf.InvalidProtocolBufferException;
  24 import com.google.protobuf.Struct;
  25 import com.google.protobuf.Struct.Builder;
  26 import com.google.protobuf.util.JsonFormat;
  27 import io.grpc.Status;
  28 import java.util.ArrayList;
  29 import java.util.List;
  30 import java.util.Map;
  31 import java.util.Optional;
  32 import java.util.UUID;
  33 import java.util.concurrent.CountDownLatch;
  34 import java.util.concurrent.TimeUnit;
  35 import java.util.concurrent.atomic.AtomicReference;
  36 import org.onap.ccsdk.cds.controllerblueprints.common.api.ActionIdentifiers;
  37 import org.onap.ccsdk.cds.controllerblueprints.common.api.CommonHeader;
  38 import org.onap.ccsdk.cds.controllerblueprints.common.api.EventType;
  39 import org.onap.ccsdk.cds.controllerblueprints.processing.api.ExecutionServiceInput;
  40 import org.onap.ccsdk.cds.controllerblueprints.processing.api.ExecutionServiceOutput;
  41 import org.onap.policy.cds.CdsResponse;
  42 import org.onap.policy.cds.api.CdsProcessorListener;
  43 import org.onap.policy.cds.client.CdsProcessorGrpcClient;
  44 import org.onap.policy.cds.properties.CdsServerProperties;
  45 import org.onap.policy.common.utils.coder.CoderException;
  46 import org.onap.policy.controlloop.ControlLoopOperation;
  47 import org.onap.policy.controlloop.VirtualControlLoopEvent;
  48 import org.onap.policy.controlloop.actor.cds.constants.CdsActorConstants;
  49 import org.onap.policy.controlloop.actor.cds.request.CdsActionRequest;
  50 import org.onap.policy.controlloop.actorserviceprovider.spi.Actor;
  51 import org.onap.policy.controlloop.policy.Policy;
  52 import org.slf4j.Logger;
  53 import org.slf4j.LoggerFactory;
  54
  55 /**
  56  * CDS Actor service-provider implementation. This is a deploy dark feature for El-Alto release.
  57  */
  58 public class CdsActorServiceProvider implements Actor {
  59
  60     private static final Logger LOGGER = LoggerFactory.getLogger(CdsActorServiceProvider.class);
  61
  62     /**
  63      * {@inheritDoc}.
  64      */
  65     @Override
  66     public String actor() {
  67         return CdsActorConstants.CDS_ACTOR;
  68     }
  69
  70     /**
  71      * {@inheritDoc}. Note: This is a placeholder for now.
  72      */
  73     @Override
  74     public List<String> recipes() {
  75         return new ArrayList<>();
  76     }
  77
  78     /**
  79      * {@inheritDoc}. Note: This is a placeholder for now.
  80      */
  81     @Override
  82     public List<String> recipeTargets(final String recipe) {
  83         return new ArrayList<>();
  84     }
  85
  86     /**
  87      * {@inheritDoc}. Note: This is a placeholder for now.
  88      */
  89     @Override
  90     public List<String> recipePayloads(final String recipe) {
  91         return new ArrayList<>();
  92     }
  93
  94     /**
  95      * Build the CDS ExecutionServiceInput request from the policy object and the AAI enriched parameters. TO-DO: Avoid
  96      * leaking Exceptions to the Kie Session thread. TBD item for Frankfurt release.
  97      *
  98      * @param onset the event that is reporting the alert for policy to perform an action.
  99      * @param operation the control loop operation specifying the actor, operation, target, etc.
 100      * @param policy the policy specified from the yaml generated by CLAMP or through Policy API.
 101      * @param aaiParams Map of enriched AAI attributes in node.attribute notation.
 102      * @return an Optional ExecutionServiceInput instance if valid else an Optional empty object is returned.
 103      */
 104     public Optional<ExecutionServiceInput> constructRequest(VirtualControlLoopEvent onset,
 105         ControlLoopOperation operation, Policy policy, Map<String, String> aaiParams) {
 106
 107         // For the current operational TOSCA policy model (yaml) CBA name and version are embedded in the payload
 108         // section, with the new policy type model being proposed in Frankfurt we will be able to move it out.
 109         Map<String, String> payload = policy.getPayload();
 110         if (!validateCdsMandatoryParams(policy)) {
 111             return Optional.empty();
 112         }
 113         String cbaName = payload.get(CdsActorConstants.KEY_CBA_NAME);
 114         String cbaVersion = payload.get(CdsActorConstants.KEY_CBA_VERSION);
 115
 116         // Retain only the payload by removing CBA name and version once they are extracted
 117         // to be put in CDS request header.
 118         payload.remove(CdsActorConstants.KEY_CBA_NAME);
 119         payload.remove(CdsActorConstants.KEY_CBA_VERSION);
 120
 121         // Embed payload from policy to ConfigDeployRequest object, serialize and inject into grpc request.
 122         String cbaActionName = policy.getRecipe();
 123         CdsActionRequest request = new CdsActionRequest();
 124         request.setPolicyPayload(payload);
 125         request.setActionName(cbaActionName);
 126         request.setResolutionKey(UUID.randomUUID().toString());
 127
 128         // Inject AAI properties into payload map. Offer flexibility to the usecase
 129         // implementation to inject whatever AAI parameters are of interest to them.
 130         // E.g. For vFW usecase El-Alto inject service-instance-id, generic-vnf-id as needed by CDS.
 131         request.setAaiProperties(aaiParams);
 132
 133         Builder struct = Struct.newBuilder();
 134         try {
 135             String requestStr = request.generateCdsPayload();
 136             Preconditions.checkState(!Strings.isNullOrEmpty(requestStr), "Unable to build "
 137                 + "config-deploy-request from payload parameters: {}", payload);
 138             JsonFormat.parser().merge(requestStr, struct);
 139         } catch (InvalidProtocolBufferException | CoderException e) {
 140             LOGGER.error("Failed to embed CDS payload string into the input request. blueprint({}:{}) for action({})",
 141                     cbaName, cbaVersion, cbaActionName, e);
 142             return Optional.empty();
 143         }
 144
 145         // Build CDS gRPC request common-header
 146         CommonHeader commonHeader = CommonHeader.newBuilder()
 147             .setOriginatorId(CdsActorConstants.ORIGINATOR_ID)
 148             .setRequestId(onset.getRequestId().toString())
 149             .setSubRequestId(operation.getSubRequestId())
 150             .build();
 151
 152         // Build CDS gRPC request action-identifier
 153         ActionIdentifiers actionIdentifiers = ActionIdentifiers.newBuilder()
 154             .setBlueprintName(cbaName)
 155             .setBlueprintVersion(cbaVersion)
 156             .setActionName(cbaActionName)
 157             .setMode(CdsActorConstants.CDS_MODE)
 158             .build();
 159
 160         // Finally build the ExecutionServiceInput gRPC request object.
 161         ExecutionServiceInput executionServiceInput = ExecutionServiceInput.newBuilder()
 162             .setCommonHeader(commonHeader)
 163             .setActionIdentifiers(actionIdentifiers)
 164             .setPayload(struct.build())
 165             .build();
 166         return Optional.of(executionServiceInput);
 167     }
 168
 169     private boolean validateCdsMandatoryParams(Policy policy) {
 170         if (policy == null || policy.getPayload() == null) {
 171             return false;
 172         }
 173         Map<String, String> payload = policy.getPayload();
 174         String cbaName = payload.get(CdsActorConstants.KEY_CBA_NAME);
 175         String cbaVersion = payload.get(CdsActorConstants.KEY_CBA_VERSION);
 176         String cbaActionName = policy.getRecipe();
 177         return !Strings.isNullOrEmpty(cbaName) && !Strings.isNullOrEmpty(cbaVersion) && !Strings
 178             .isNullOrEmpty(cbaActionName);
 179     }
 180
 181     public class CdsActorServiceManager implements CdsProcessorListener {
 182
 183         private final AtomicReference<String> cdsStatus = new AtomicReference<>();
 184
 185         /**
 186          * {@inheritDoc}.
 187          */
 188         @Override
 189         public void onMessage(final ExecutionServiceOutput message) {
 190             LOGGER.info("Received notification from CDS: {}", message);
 191             EventType eventType = message.getStatus().getEventType();
 192             switch (eventType) {
 193                 case EVENT_COMPONENT_FAILURE:
 194                     cdsStatus.compareAndSet(null, CdsActorConstants.FAILED);
 195                     break;
 196                 case EVENT_COMPONENT_PROCESSING:
 197                     cdsStatus.compareAndSet(null, CdsActorConstants.PROCESSING);
 198                     break;
 199                 case EVENT_COMPONENT_EXECUTED:
 200                     cdsStatus.compareAndSet(null, CdsActorConstants.SUCCESS);
 201                     break;
 202                 default:
 203                     cdsStatus.compareAndSet(null, CdsActorConstants.FAILED);
 204                     break;
 205             }
 206         }
 207
 208         /**
 209          * {@inheritDoc}.
 210          */
 211         @Override
 212         public void onError(final Throwable throwable) {
 213             Status status = Status.fromThrowable(throwable);
 214             cdsStatus.compareAndSet(null, CdsActorConstants.ERROR);
 215             LOGGER.error("Failed processing blueprint {} {}", status, throwable);
 216         }
 217
 218         /**
 219          * Send gRPC request to CDS to execute the blueprint.
 220          *
 221          * @param cdsClient CDS grpc client object.
 222          * @param cdsProps CDS properties.
 223          * @param executionServiceInput a valid CDS grpc request object.
 224          * @return the cds response.
 225          */
 226         public CdsResponse sendRequestToCds(CdsProcessorGrpcClient cdsClient, CdsServerProperties cdsProps,
 227                                             ExecutionServiceInput executionServiceInput) {
 228             try {
 229                 LOGGER.trace("Start CdsActorServiceProvider.executeCdsBlueprintProcessor {}.", executionServiceInput);
 230                 // TO-DO: Handle requests asynchronously once the callback support is added to actors.
 231                 CountDownLatch countDownLatch = cdsClient.sendRequest(executionServiceInput);
 232                 boolean status = countDownLatch.await(cdsProps.getTimeout(), TimeUnit.SECONDS);
 233                 if (!status) {
 234                     cdsStatus.compareAndSet(null, CdsActorConstants.TIMED_OUT);
 235                 }
 236                 LOGGER.info("CDS status response {}", getCdsStatus());
 237             } catch (InterruptedException ex) {
 238                 LOGGER.error("Caught exception in executeCdsBlueprintProcessor in CdsActorServiceProvider: ", ex);
 239                 cdsStatus.compareAndSet(null, CdsActorConstants.INTERRUPTED);
 240                 Thread.currentThread().interrupt();
 241             }
 242             LOGGER.info("Status of the CDS gRPC request is: {}", getCdsStatus());
 243
 244             CdsResponse response = new CdsResponse();
 245             response.setRequestId(
 246                     executionServiceInput != null && executionServiceInput.getCommonHeader() != null
 247                         ? executionServiceInput.getCommonHeader().getRequestId() : null);
 248             response.setStatus(this.getCdsStatus());
 249             return response;
 250         }
 251
 252         String getCdsStatus() {
 253             return cdsStatus.get();
 254         }
 255     }
 256 }