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/*
* ============LICENSE_START===================================================
* Copyright (c) 2018 Amdocs
* ============================================================================
* 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.pomba.contextbuilder.sdnc.handlers;
import java.text.MessageFormat;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import javax.ws.rs.client.Client;
import org.apache.camel.Exchange;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import org.onap.aai.restclient.client.RestClient;
import org.onap.pomba.common.datatypes.ModelContext;
import org.onap.pomba.common.datatypes.Service;
import org.onap.pomba.contextbuilder.sdnc.exception.AuditError;
import org.onap.pomba.contextbuilder.sdnc.exception.AuditException;
import org.onap.pomba.contextbuilder.sdnc.model.ServiceEntity;
import org.onap.pomba.contextbuilder.sdnc.model.Vnf;
import org.onap.pomba.contextbuilder.sdnc.model.VnfInstance;
import org.onap.pomba.contextbuilder.sdnc.util.RestUtil;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
@Component
public class VnfApiHandler {
private static Logger log = LoggerFactory.getLogger(VnfApiHandler.class);
@Autowired
private String aaiBasicAuthorization;
@Autowired
private RestClient aaiClient;
@Autowired
private String aaiBaseUrl;
@Autowired
private String aaiServiceInstancePath;
@Autowired
private Client jerseyClient;
@Autowired
private String sdncBaseUrl;
@Autowired
private String sdncBasicAuthorization;
@Autowired
private String sdncVnfPath;
private static final String JSON_RELATIONSHIP_LIST = "relationship-list";
private static final String JSON_RELATIONSHIP = "relationship";
private static final String JSON_RELATED_TO = "related-to";
private static final String JSON_RELATED_LINK = "related-link";
private static final String JSON_GENERIC_VNF = "generic-vnf";
private static final String EMPTY_JSON_STRING = "{}";
public ModelContext process(Exchange exchange) throws Exception {
log.info("in VNF-API HANDLER: ");
Service service = new Service();
ServiceEntity serviceEntity = (ServiceEntity)exchange.getIn().getBody();
service.setUuid(serviceEntity.getServiceInstanceId());
service.setName( serviceEntity.getServiceType() + " service instance");
// GET the list of VNF related-to links from AAI
String url= aaiBaseUrl+generateServiceInstanceURL(aaiServiceInstancePath, serviceEntity.getCustomerId(), serviceEntity.getServiceType(), serviceEntity.getServiceInstanceId());
String serviceInstancePayload = RestUtil.getAaiResource(aaiClient, url, aaiBasicAuthorization, serviceEntity.getTransactionId());
List<String> genericVnfLinks = extractGenericVnfRelatedLink(serviceInstancePayload);
// GET the VNF list (module-id) from AAI
List <VnfInstance> vnfList = retrieveAaiVnfList(aaiClient, aaiBaseUrl, aaiBasicAuthorization, serviceEntity.getTransactionId(), genericVnfLinks);
// GET the module-id from SDNC using VNF-API
Map<String,List<Vnf>> sdncVnfMap = RestUtil.getSdncVnfList(jerseyClient, sdncBaseUrl, sdncVnfPath,
sdncBasicAuthorization, vnfList);
// Transform the AAI and SDNC models to the audit common model
ModelContext context = RestUtil.transformVnfList(vnfList, sdncVnfMap);
context.setService(service);
return context;
}
private static String generateServiceInstanceURL(String siPath, String customerId, String serviceType, String serviceInstanceId) {
return MessageFormat.format(siPath, customerId, serviceType, serviceInstanceId);
}
private static List<String> extractGenericVnfRelatedLink(String serviceInstancePayload) throws AuditException {
List<String> genericVnfLinks = new ArrayList<>();;
try {
JSONObject relationshipList = new JSONObject(serviceInstancePayload).getJSONObject(JSON_RELATIONSHIP_LIST);
JSONArray relationship = relationshipList.getJSONArray(JSON_RELATIONSHIP);
if (relationship != null) {
for (int i = 0; i < relationship.length(); i++) {
JSONObject relationshipInstance = relationship.optJSONObject(i);
if (relationshipInstance.has(JSON_RELATED_TO) && (relationshipInstance.getString(JSON_RELATED_TO).equals(JSON_GENERIC_VNF))) {
genericVnfLinks.add(relationshipInstance.getString(JSON_RELATED_LINK));
}
}
}
} catch (JSONException e) {
log.error(e.getMessage());
throw new AuditException(AuditError.JSON_PARSE_ERROR + e.getMessage());
}
return genericVnfLinks;
}
private static List<VnfInstance> retrieveAaiVnfList(RestClient aaiClient, String aaiBaseUrl, String aaiBasicAuthorization, String transactionId, List <String>genericVnfLinks) throws AuditException {
List<VnfInstance> vnfList = new ArrayList<>();
for (String genericVnfLink : genericVnfLinks) {
String genericVnfUrl = RestUtil.generateAaiUrl(aaiBaseUrl, genericVnfLink, null);
String genericVnfPayload = RestUtil.getAaiResource(aaiClient, genericVnfUrl, aaiBasicAuthorization, transactionId);
if (genericVnfPayload.equals(EMPTY_JSON_STRING)) {
log.info("retrieveAaiVnfList "+ genericVnfPayload +" is not found, " + "return empty Json ");
} else {
// Create the AAI VnfInstance from the AAI generic-vnf json
VnfInstance vnfInstance = VnfInstance.fromJson(genericVnfPayload);
vnfList.add(vnfInstance);
}
}
log.debug("The size of vnfList:"+ vnfList.size());
return vnfList;
}
}
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