common/src/main/java/org/openecomp/mso/client/aai/entities/uri/ServiceInstanceUri.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * ONAP - SO
   4  * ================================================================================
   5  * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
   6  * ================================================================================
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  * ============LICENSE_END=========================================================
  19  */
  20
  21 package org.openecomp.mso.client.aai.entities.uri;
  22
  23 import java.io.IOException;
  24 import java.net.URI;
  25 import java.util.Collections;
  26 import java.util.Map;
  27 import java.util.Optional;
  28
  29 import javax.ws.rs.BadRequestException;
  30 import javax.ws.rs.client.ResponseProcessingException;
  31 import javax.ws.rs.core.UriBuilder;
  32
  33 import org.openecomp.mso.client.aai.AAIObjectType;
  34 import org.openecomp.mso.client.aai.AAIQueryClient;
  35 import org.openecomp.mso.client.aai.Format;
  36 import org.openecomp.mso.client.aai.entities.CustomQuery;
  37 import org.openecomp.mso.client.aai.entities.Results;
  38 import org.openecomp.mso.client.aai.exceptions.AAIPayloadException;
  39 import org.openecomp.mso.client.aai.exceptions.AAIUriComputationException;
  40 import org.openecomp.mso.client.aai.exceptions.AAIUriNotFoundException;
  41
  42 import com.fasterxml.jackson.core.type.TypeReference;
  43 import com.fasterxml.jackson.databind.ObjectMapper;
  44
  45 public class ServiceInstanceUri extends SimpleUri {
  46
  47         private Optional<String> cachedValue = Optional.empty();
  48
  49         protected ServiceInstanceUri(Object... values) {
  50                 super(AAIObjectType.SERVICE_INSTANCE, values);
  51         }
  52         protected ServiceInstanceUri(UriBuilder builder, Optional<String> cachedValue, Object... values) {
  53                 super(AAIObjectType.SERVICE_INSTANCE, builder, values);
  54                 this.cachedValue = cachedValue;
  55         }
  56         protected String getSerivceInstance(Object id) throws AAIUriNotFoundException, AAIPayloadException {
  57                 if (!this.getCachedValue().isPresent()) {
  58                         AAIResourceUri serviceInstanceUri = AAIUriFactory.createNodesUri(AAIObjectType.SERVICE_INSTANCE, id);
  59                         CustomQuery query = new CustomQuery(Collections.singletonList(serviceInstanceUri));
  60                         String resultJson;
  61                         try {
  62                                 resultJson = this.getQueryClient().query(Format.PATHED, query);
  63                         } catch (ResponseProcessingException e) {
  64                                 if (e.getCause() instanceof BadRequestException) {
  65                                         throw new AAIUriNotFoundException("Service instance " + id + " not found at: " + serviceInstanceUri.build());
  66                                 } else {
  67                                         throw e;
  68                                 }
  69                         }
  70                         try {
  71                                 cachedValue = extractRelatedLink(resultJson);
  72                                 if (!cachedValue.isPresent()) {
  73                                         throw new AAIUriNotFoundException("Service instance " + id + " not found at: " + serviceInstanceUri.build());
  74                                 }
  75                         } catch (IOException e) {
  76                                 throw new AAIPayloadException("could not map payload: " + resultJson, e);
  77                         }
  78
  79                 }
  80
  81                 return this.getCachedValue().get();
  82         }
  83
  84         protected Optional<String> extractRelatedLink(String jsonString) throws IOException {
  85                 Optional<String> result;
  86                 ObjectMapper mapper = new ObjectMapper();
  87
  88                         Results<Map<String, String>> results = mapper.readValue(jsonString, new TypeReference<Results<Map<String, String>>>(){});
  89                         if (results.getResult().size() == 1) {
  90                                 String uriString = results.getResult().get(0).get("resource-link");
  91                                 URI uri = UriBuilder.fromUri(uriString).build();
  92                                 String rawPath = uri.getRawPath();
  93                         result = Optional.of(rawPath.replaceAll("/aai/v\\d+", ""));
  94                         } else if (results.getResult().isEmpty()) {
  95                         result = Optional.empty();
  96                         } else {
  97                                 throw new IllegalStateException("more than one result returned");
  98                         }
  99
 100                 return result;
 101         }
 102
 103         protected Optional<String> getCachedValue() {
 104                 return this.cachedValue;
 105         }
 106
 107         @Override
 108         public URI build() {
 109                 try {
 110                 if (this.values.length == 1) {
 111                         String uri = getSerivceInstance(this.values[0]);
 112                         Map<String, String> map = getURIKeys(uri);
 113                         return super.build(map.values().toArray(values));
 114                 }
 115                 } catch (AAIUriNotFoundException | AAIPayloadException e) {
 116                         throw new AAIUriComputationException(e);
 117                 }
 118                 return super.build();
 119         }
 120
 121         @Override
 122         public ServiceInstanceUri clone() {
 123                 return new ServiceInstanceUri(this.internalURI.clone(), this.getCachedValue(), values);
 124         }
 125
 126         protected AAIQueryClient getQueryClient() {
 127                 return new AAIQueryClient();
 128         }
 129 }