nokiav2/driver/src/main/java/org/onap/vfc/nfvo/driver/vnfm/svnfm/nokia/onap/vfc/VfcGrantManager.java

   1 /*
   2  * Copyright 2016-2017, Nokia Corporation
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package org.onap.vfc.nfvo.driver.vnfm.svnfm.nokia.onap.vfc;
  18
  19 import com.google.common.annotations.VisibleForTesting;
  20 import com.google.gson.Gson;
  21 import com.google.gson.JsonArray;
  22 import com.google.gson.JsonElement;
  23 import com.google.gson.JsonObject;
  24 import com.nokia.cbam.lcm.v32.ApiException;
  25 import com.nokia.cbam.lcm.v32.model.VnfInfo;
  26 import com.nokia.cbam.lcm.v32.model.VnfcResourceInfo;
  27 import org.onap.vfc.nfvo.driver.vnfm.svnfm.nokia.api.IGrantManager;
  28 import org.onap.vfc.nfvo.driver.vnfm.svnfm.nokia.spring.Conditions;
  29 import org.onap.vfc.nfvo.driver.vnfm.svnfm.nokia.vnfm.CatalogManager;
  30 import org.onap.vfc.nfvo.driver.vnfm.svnfm.nokia.vnfm.CbamRestApiProvider;
  31 import org.onap.vnfmdriver.model.*;
  32 import org.slf4j.Logger;
  33 import org.springframework.beans.factory.annotation.Autowired;
  34 import org.springframework.context.annotation.Conditional;
  35 import org.springframework.stereotype.Component;
  36 import org.yaml.snakeyaml.Yaml;
  37
  38 import java.util.*;
  39
  40 import static com.nokia.cbam.lcm.v32.model.InstantiationState.INSTANTIATED;
  41 import static org.onap.vfc.nfvo.driver.vnfm.svnfm.nokia.util.CbamUtils.buildFatalFailure;
  42 import static org.onap.vfc.nfvo.driver.vnfm.svnfm.nokia.util.CbamUtils.child;
  43 import static org.onap.vfc.nfvo.driver.vnfm.svnfm.nokia.vnfm.CbamRestApiProvider.NOKIA_LCM_API_VERSION;
  44 import static org.onap.vnfmdriver.model.OperationType.TERMINAL;
  45 import static org.slf4j.LoggerFactory.getLogger;
  46
  47 /**
  48  * Responsible for handling granting before the execution of a VNF operation
  49  */
  50 @Component
  51 @Conditional(value = Conditions.UseForVfc.class)
  52 public class VfcGrantManager implements IGrantManager {
  53     private static Logger logger = getLogger(VfcGrantManager.class);
  54     private final CatalogManager catalogManager;
  55     private final CbamRestApiProvider cbamRestApiProvider;
  56     private final VfcRestApiProvider vfcRestApiProvider;
  57
  58     @Autowired
  59     VfcGrantManager(CatalogManager catalogManager, CbamRestApiProvider cbamRestApiProvider, VfcRestApiProvider vfcRestApiProvider) {
  60         this.catalogManager = catalogManager;
  61         this.cbamRestApiProvider = cbamRestApiProvider;
  62         this.vfcRestApiProvider = vfcRestApiProvider;
  63     }
  64
  65     @Override
  66     public void requestGrantForHeal(String vnfmId, String vnfId, String vimId, String onapCsarId, VnfHealRequest request, String jobId) {
  67         GrantVNFRequest grantRequest = buildGrantRequest(vnfmId, vimId, onapCsarId, jobId, OperationType.HEAL);
  68         ResourceChange resourceChange = new ResourceChange();
  69         resourceChange.setType(ChangeType.VDU);
  70         resourceChange.setVdu(request.getAffectedvm().getVduid());
  71         resourceChange.setResourceDefinitionId(UUID.randomUUID().toString());
  72         grantRequest.getRemoveResource().add(resourceChange);
  73         grantRequest.getAddResource().add(resourceChange);
  74         grantRequest.setVnfInstanceId(vnfId);
  75         requestGrant(grantRequest);
  76     }
  77
  78     @Override
  79     public void requestGrantForScale(String vnfmId, String vnfId, String vimId, String onapCsarId, VnfScaleRequest request, String jobId) {
  80         try {
  81             OperationType operationType = ScaleDirection.IN.equals(request.getType()) ? OperationType.SCALEIN : OperationType.SCALEOUT;
  82             GrantVNFRequest grantRequest = buildGrantRequest(vnfmId, vimId, onapCsarId, jobId, operationType);
  83             com.nokia.cbam.lcm.v32.model.VnfInfo vnf = cbamRestApiProvider.getCbamLcmApi(vnfmId).vnfsVnfInstanceIdGet(vnfId, NOKIA_LCM_API_VERSION);
  84             String vnfdContent = catalogManager.getCbamVnfdContent(vnfmId, vnf.getVnfdId());
  85             Set<ResourceChange> resourceChanges = calculateResourceChangeDuringScaling(vnfdContent, request.getAspectId(), Integer.parseInt(request.getNumberOfSteps()));
  86             if (request.getType() == ScaleDirection.IN) {
  87                 grantRequest.getRemoveResource().addAll(resourceChanges);
  88
  89             } else {
  90                 grantRequest.getAddResource().addAll(resourceChanges);
  91             }
  92             grantRequest.setVnfInstanceId(vnfId);
  93             requestGrant(grantRequest);
  94         } catch (ApiException e) {
  95             throw buildFatalFailure(logger, "Unable to query VNF " + vnfId, e);
  96         }
  97     }
  98
  99     @Override
 100     public void requestGrantForTerminate(String vnfmId, String vnfId, String vimId, String onapVnfdId, VnfInfo vnf, String jobId) {
 101         if (vnf.getInstantiationState() == INSTANTIATED) {
 102             GrantVNFRequest grantRequest;
 103             try {
 104                 grantRequest = buildGrantRequest(vnfmId, vimId, onapVnfdId, jobId, TERMINAL);
 105                 grantRequest.setVnfInstanceId(vnfId);
 106                 addVnfcsToGrant(vnf, grantRequest);
 107             } catch (Exception e) {
 108                 throw buildFatalFailure(logger, "Unable to prepare grant request for termination", e);
 109             }
 110             requestGrant(grantRequest);
 111         }
 112     }
 113
 114     private void addVnfcsToGrant(VnfInfo vnf, GrantVNFRequest grantRequest) {
 115         //VNF is instantiated but has no VNFC
 116         if (vnf.getInstantiatedVnfInfo().getVnfcResourceInfo() != null) {
 117             for (VnfcResourceInfo vnfc : vnf.getInstantiatedVnfInfo().getVnfcResourceInfo()) {
 118                 ResourceChange resourceChange = new ResourceChange();
 119                 grantRequest.getRemoveResource().add(resourceChange);
 120                 resourceChange.setVdu(vnfc.getVduId());
 121                 resourceChange.setType(ChangeType.VDU);
 122                 resourceChange.setResourceDefinitionId(UUID.randomUUID().toString());
 123             }
 124         }
 125     }
 126
 127     @Override
 128     public GrantVNFResponseVim requestGrantForInstantiate(String vnfmId, String vnfId, String vimId, String onapVnfdId, String instantiationLevelId, String cbamVnfdContent, String jobId) {
 129         GrantVNFRequest grantRequest;
 130         try {
 131             grantRequest = buildGrantRequest(vnfmId, vimId, onapVnfdId, jobId, OperationType.INSTANTIATE);
 132             grantRequest.setVnfInstanceId(vnfId);
 133             grantRequest.setAddResource(new ArrayList<>());
 134             grantRequest.getAddResource().addAll(calculateResourceChangeDuringInstantiate(cbamVnfdContent, instantiationLevelId));
 135         } catch (Exception e) {
 136             throw buildFatalFailure(logger, "Unable to prepare grant request for instantiation", e);
 137         }
 138         return requestGrant(grantRequest);
 139     }
 140
 141     private GrantVNFRequest buildGrantRequest(String vnfmId, String vimId, String onapCsarId, String jobId, OperationType operationType) {
 142         GrantVNFRequest grantVNFRequest = new GrantVNFRequest();
 143         //FIXME
 144         //Currently the grant request sent to VF-C must contain the VIM identifier in the
 145         //grant response (normally in ETSI VIM identifier is received in the grant response
 146         //from ETSI orchestrator the vimId parameter should be removed from this POJO
 147         //to be able to fix this https://jira.onap.org/browse/VFC-603 must be solved
 148         //the vimId should be removed from the AdditionalGrantParams structure
 149         grantVNFRequest.setAdditionalParam(new AdditionalGrantParams(vnfmId, vimId));
 150         grantVNFRequest.setVnfDescriptorId(onapCsarId);
 151         grantVNFRequest.setJobId(jobId);
 152         grantVNFRequest.setLifecycleOperation(operationType);
 153         grantVNFRequest.setAddResource(new ArrayList<>());
 154         grantVNFRequest.setRemoveResource(new ArrayList<>());
 155         return grantVNFRequest;
 156     }
 157
 158     private GrantVNFResponseVim requestGrant(GrantVNFRequest grantRequest) {
 159         try {
 160             return vfcRestApiProvider.getNsLcmApi().grantvnf(grantRequest).getVim();
 161         } catch (org.onap.vnfmdriver.ApiException e) {
 162             throw buildFatalFailure(logger, "Unable to request grant", e);
 163         }
 164     }
 165
 166     private Set<ResourceChange> calculateResourceChangeDuringInstantiate(String vnfdContent, String instantiationLevelId) {
 167         JsonObject root = new Gson().toJsonTree(new Yaml().load(vnfdContent)).getAsJsonObject();
 168         JsonObject capabilities = child(child(child(root, "topology_template"), "substitution_mappings"), "capabilities");
 169         JsonObject deploymentFlavorProperties = child(child(capabilities, "deployment_flavour"), "properties");
 170         JsonObject instantiationLevels = child(deploymentFlavorProperties, "instantiation_levels");
 171         Set<ResourceChange> resourceChanges = new HashSet<>();
 172         for (Map.Entry<String, JsonElement> vdu_level : child(child(instantiationLevels, instantiationLevelId), ("vdu_levels")).entrySet()) {
 173             JsonElement numberOfInstances = vdu_level.getValue().getAsJsonObject().get("number_of_instances");
 174             for (int i = 0; i < numberOfInstances.getAsLong(); i++) {
 175                 ResourceChange resourceChange = new ResourceChange();
 176                 resourceChanges.add(resourceChange);
 177                 resourceChange.setVdu(vdu_level.getKey());
 178                 resourceChange.setType(ChangeType.VDU);
 179                 resourceChange.setResourceDefinitionId(UUID.randomUUID().toString());
 180             }
 181         }
 182         return resourceChanges;
 183     }
 184
 185     private Set<ResourceChange> calculateResourceChangeDuringScaling(String vnfdContent, String aspectId, int steps) {
 186         JsonObject root = new Gson().toJsonTree(new Yaml().load(vnfdContent)).getAsJsonObject();
 187         Set<ResourceChange> resourceChanges = new HashSet<>();
 188         JsonArray policies = child(root, "topology_template").getAsJsonObject().get("policies").getAsJsonArray();
 189         for (JsonElement policy : policies) {
 190             if ("heat_mapping".equals(policy.getAsJsonObject().entrySet().iterator().next().getKey())) {
 191                 JsonObject aspects = policy.getAsJsonObject().entrySet().iterator().next().getValue().getAsJsonObject().get("properties").getAsJsonObject().get("aspects").getAsJsonObject();
 192                 JsonObject aspect = child(aspects, aspectId);
 193                 if (aspect.has("vdus")) {
 194                     addChangesForAspect(steps, resourceChanges, aspect);
 195                 }
 196             }
 197         }
 198         return resourceChanges;
 199     }
 200
 201     private void addChangesForAspect(int steps, Set<ResourceChange> resourceChanges, JsonObject aspect) {
 202         for (Map.Entry<String, JsonElement> vdu : aspect.get("vdus").getAsJsonObject().entrySet()) {
 203             String vduId = vdu.getKey();
 204             for (int step = 0; step < steps; step++) {
 205                 for (int i = 0; i < vdu.getValue().getAsJsonArray().size(); i++) {
 206                     ResourceChange resourceChange = new ResourceChange();
 207                     resourceChange.setVdu(vduId);
 208                     resourceChange.setType(ChangeType.VDU);
 209                     resourceChange.setResourceDefinitionId(UUID.randomUUID().toString());
 210                     resourceChanges.add(resourceChange);
 211                 }
 212             }
 213         }
 214     }
 215
 216     /**
 217      * Represents the mandatory parameters that must be sent during grant request to VF-C
 218      */
 219     @VisibleForTesting
 220     static class AdditionalGrantParams {
 221         private final String vnfmId;
 222         private final String vimId;
 223
 224         AdditionalGrantParams(String vnfmId, String vimId) {
 225             this.vnfmId = vnfmId;
 226             this.vimId = vimId;
 227         }
 228
 229         /**
 230          * @return the identifier of the VNFM requesting the grant
 231          */
 232         public String getVnfmId() {
 233             return vnfmId;
 234         }
 235
 236         /**
 237          * @return the identifier of the VIM for which the grant is requested
 238          */
 239         public String getVimId() {
 240             return vimId;
 241         }
 242     }
 243 }