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/*
* Copyright 2016-2017, Nokia Corporation
*
* 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.
*/
package org.onap.vfc.nfvo.driver.vnfm.svnfm.nokia.onap.vfc;
import com.google.common.annotations.VisibleForTesting;
import com.google.gson.Gson;
import com.google.gson.JsonArray;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.nokia.cbam.lcm.v32.model.VnfInfo;
import com.nokia.cbam.lcm.v32.model.VnfcResourceInfo;
import java.util.*;
import org.onap.vfc.nfvo.driver.vnfm.svnfm.nokia.api.IGrantManager;
import org.onap.vfc.nfvo.driver.vnfm.svnfm.nokia.vnfm.CatalogManager;
import org.onap.vfc.nfvo.driver.vnfm.svnfm.nokia.vnfm.CatalogManagerForVfc;
import org.onap.vfc.nfvo.driver.vnfm.svnfm.nokia.vnfm.CbamRestApiProvider;
import org.onap.vfc.nfvo.driver.vnfm.svnfm.nokia.vnfm.CbamRestApiProviderForVfc;
import org.onap.vnfmdriver.model.*;
import org.slf4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.yaml.snakeyaml.Yaml;
import static com.nokia.cbam.lcm.v32.model.InstantiationState.INSTANTIATED;
import static org.onap.vfc.nfvo.driver.vnfm.svnfm.nokia.util.CbamUtils.buildFatalFailure;
import static org.onap.vfc.nfvo.driver.vnfm.svnfm.nokia.util.CbamUtils.child;
import static org.onap.vfc.nfvo.driver.vnfm.svnfm.nokia.vnfm.CbamRestApiProvider.NOKIA_LCM_API_VERSION;
import static org.onap.vnfmdriver.model.OperationType.TERMINAL;
import static org.slf4j.LoggerFactory.getLogger;
/**
* Responsible for handling granting before the execution of a VNF operation
*/
@Component
public class VfcGrantManager implements IGrantManager {
private static Logger logger = getLogger(VfcGrantManager.class);
private final CatalogManager catalogManager;
private final CbamRestApiProvider cbamRestApiProvider;
private final VfcRestApiProvider vfcRestApiProvider;
@Autowired
VfcGrantManager(CatalogManagerForVfc catalogManager, CbamRestApiProviderForVfc cbamRestApiProvider, VfcRestApiProvider vfcRestApiProvider) {
this.catalogManager = catalogManager;
this.cbamRestApiProvider = cbamRestApiProvider;
this.vfcRestApiProvider = vfcRestApiProvider;
}
@Override
public void requestGrantForHeal(String vnfmId, String vnfId, String vimId, String onapCsarId, VnfHealRequest request, String jobId) {
GrantVNFRequest grantRequest = buildGrantRequest(vnfmId, vimId, onapCsarId, jobId, OperationType.HEAL);
ResourceChange resourceChange = new ResourceChange();
resourceChange.setType(ChangeType.VDU);
resourceChange.setVdu(request.getAffectedvm().getVduid());
resourceChange.setResourceDefinitionId(UUID.randomUUID().toString());
grantRequest.getRemoveResource().add(resourceChange);
grantRequest.getAddResource().add(resourceChange);
grantRequest.setVnfInstanceId(vnfId);
requestGrant(grantRequest);
}
@Override
public void requestGrantForScale(String vnfmId, String vnfId, String vimId, String onapCsarId, VnfScaleRequest request, String jobId) {
String cbamVnfdId;
try {
com.nokia.cbam.lcm.v32.model.VnfInfo vnf = cbamRestApiProvider.getCbamLcmApi(vnfmId).vnfsVnfInstanceIdGet(vnfId, NOKIA_LCM_API_VERSION).blockingFirst();
cbamVnfdId = vnf.getVnfdId();
} catch (Exception e) {
throw buildFatalFailure(logger, "Unable to query VNF " + vnfId, e);
}
OperationType operationType = ScaleDirection.IN.equals(request.getType()) ? OperationType.SCALEIN : OperationType.SCALEOUT;
GrantVNFRequest grantRequest = buildGrantRequest(vnfmId, vimId, onapCsarId, jobId, operationType);
String vnfdContent = catalogManager.getCbamVnfdContent(vnfmId, cbamVnfdId);
Set<ResourceChange> resourceChanges = calculateResourceChangeDuringScaling(vnfdContent, request.getAspectId(), Integer.parseInt(request.getNumberOfSteps()));
if (request.getType() == ScaleDirection.IN) {
grantRequest.getRemoveResource().addAll(resourceChanges);
} else {
grantRequest.getAddResource().addAll(resourceChanges);
}
grantRequest.setVnfInstanceId(vnfId);
requestGrant(grantRequest);
}
@Override
public void requestGrantForTerminate(String vnfmId, String vnfId, String vimId, String onapVnfdId, VnfInfo vnf, String jobId) {
if (vnf.getInstantiationState() == INSTANTIATED) {
GrantVNFRequest grantRequest;
try {
grantRequest = buildGrantRequest(vnfmId, vimId, onapVnfdId, jobId, TERMINAL);
grantRequest.setVnfInstanceId(vnfId);
addVnfcsToGrant(vnf, grantRequest);
} catch (Exception e) {
throw buildFatalFailure(logger, "Unable to prepare grant request for termination", e);
}
requestGrant(grantRequest);
}
}
private void addVnfcsToGrant(VnfInfo vnf, GrantVNFRequest grantRequest) {
//VNF is instantiated but has no VNFC
if (vnf.getInstantiatedVnfInfo().getVnfcResourceInfo() != null) {
for (VnfcResourceInfo vnfc : vnf.getInstantiatedVnfInfo().getVnfcResourceInfo()) {
ResourceChange resourceChange = new ResourceChange();
grantRequest.getRemoveResource().add(resourceChange);
resourceChange.setVdu(vnfc.getVduId());
resourceChange.setType(ChangeType.VDU);
resourceChange.setResourceDefinitionId(UUID.randomUUID().toString());
}
}
}
@Override
public GrantVNFResponseVim requestGrantForInstantiate(String vnfmId, String vnfId, String vimId, String onapVnfdId, String instantiationLevelId, String cbamVnfdContent, String jobId) {
GrantVNFRequest grantRequest;
try {
grantRequest = buildGrantRequest(vnfmId, vimId, onapVnfdId, jobId, OperationType.INSTANTIATE);
grantRequest.setVnfInstanceId(vnfId);
grantRequest.setAddResource(new ArrayList<>());
grantRequest.getAddResource().addAll(calculateResourceChangeDuringInstantiate(cbamVnfdContent, instantiationLevelId));
} catch (Exception e) {
throw buildFatalFailure(logger, "Unable to prepare grant request for instantiation", e);
}
return requestGrant(grantRequest);
}
private GrantVNFRequest buildGrantRequest(String vnfmId, String vimId, String onapCsarId, String jobId, OperationType operationType) {
GrantVNFRequest grantVNFRequest = new GrantVNFRequest();
//FIXME
//Currently the grant request sent to VF-C must contain the VIM identifier in the
//grant response (normally in ETSI VIM identifier is received in the grant response
//from ETSI orchestrator the vimId parameter should be removed from this POJO
//to be able to fix this https://jira.onap.org/browse/VFC-603 must be solved
//the vimId should be removed from the AdditionalGrantParams structure
grantVNFRequest.setAdditionalParam(new AdditionalGrantParams(vnfmId, vimId));
grantVNFRequest.setVnfDescriptorId(onapCsarId);
grantVNFRequest.setJobId(jobId);
grantVNFRequest.setLifecycleOperation(operationType);
grantVNFRequest.setAddResource(new ArrayList<>());
grantVNFRequest.setRemoveResource(new ArrayList<>());
return grantVNFRequest;
}
private GrantVNFResponseVim requestGrant(GrantVNFRequest grantRequest) {
try {
logger.info("Requesting grant with ", grantRequest);
GrantVNFResponse grantVNFResponse = vfcRestApiProvider.getNsLcmApi().grantvnf(grantRequest).blockingFirst();
logger.info("Successfully received grant {}", grantVNFResponse);
return grantVNFResponse.getVim();
} catch (Exception e) {
throw buildFatalFailure(logger, "Unable to request grant with " + grantRequest, e);
}
}
private Set<ResourceChange> calculateResourceChangeDuringInstantiate(String cbamVnfdContent, String instantiationLevelId) {
JsonObject root = new Gson().toJsonTree(new Yaml().load(cbamVnfdContent)).getAsJsonObject();
JsonObject capabilities = child(child(child(root, "topology_template"), "substitution_mappings"), "capabilities");
JsonObject deploymentFlavorProperties = child(child(capabilities, "deployment_flavour"), "properties");
JsonObject instantiationLevels = child(deploymentFlavorProperties, "instantiation_levels");
Set<ResourceChange> resourceChanges = new HashSet<>();
for (Map.Entry<String, JsonElement> vdu_level : child(child(instantiationLevels, instantiationLevelId), ("vdu_levels")).entrySet()) {
JsonElement numberOfInstances = vdu_level.getValue().getAsJsonObject().get("number_of_instances");
for (int i = 0; i < numberOfInstances.getAsLong(); i++) {
ResourceChange resourceChange = new ResourceChange();
resourceChanges.add(resourceChange);
resourceChange.setVdu(vdu_level.getKey());
resourceChange.setType(ChangeType.VDU);
resourceChange.setResourceDefinitionId(UUID.randomUUID().toString());
}
}
return resourceChanges;
}
private Set<ResourceChange> calculateResourceChangeDuringScaling(String vnfdContent, String aspectId, int steps) {
JsonObject root = new Gson().toJsonTree(new Yaml().load(vnfdContent)).getAsJsonObject();
Set<ResourceChange> resourceChanges = new HashSet<>();
JsonArray policies = child(root, "topology_template").getAsJsonObject().get("policies").getAsJsonArray();
for (JsonElement policy : policies) {
if ("heat_mapping".equals(policy.getAsJsonObject().entrySet().iterator().next().getKey())) {
JsonObject aspects = policy.getAsJsonObject().entrySet().iterator().next().getValue().getAsJsonObject().get("properties").getAsJsonObject().get("aspects").getAsJsonObject();
JsonObject aspect = child(aspects, aspectId);
if (aspect.has("vdus")) {
addChangesForAspect(steps, resourceChanges, aspect);
}
}
}
return resourceChanges;
}
private void addChangesForAspect(int steps, Set<ResourceChange> resourceChanges, JsonObject aspect) {
for (Map.Entry<String, JsonElement> vdu : aspect.get("vdus").getAsJsonObject().entrySet()) {
String vduId = vdu.getKey();
for (int step = 0; step < steps; step++) {
for (int i = 0; i < vdu.getValue().getAsJsonArray().size(); i++) {
ResourceChange resourceChange = new ResourceChange();
resourceChange.setVdu(vduId);
resourceChange.setType(ChangeType.VDU);
resourceChange.setResourceDefinitionId(UUID.randomUUID().toString());
resourceChanges.add(resourceChange);
}
}
}
}
/**
* Represents the mandatory parameters that must be sent during grant request to VF-C
*/
@VisibleForTesting
static class AdditionalGrantParams {
private final String vnfmId;
private final String vimId;
AdditionalGrantParams(String vnfmId, String vimId) {
this.vnfmId = vnfmId;
this.vimId = vimId;
}
/**
* @return the identifier of the VNFM requesting the grant
*/
public String getVnfmId() {
return vnfmId;
}
/**
* @return the identifier of the VIM for which the grant is requested
*/
public String getVimId() {
return vimId;
}
}
}
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