common/src/main/java/org/onap/so/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.onap.so.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.core.UriBuilder;
  31
  32 import org.onap.so.client.aai.AAIObjectType;
  33 import org.onap.so.client.aai.AAIQueryClient;
  34 import org.onap.so.client.graphinventory.Format;
  35 import org.onap.so.client.aai.entities.CustomQuery;
  36 import org.onap.so.client.aai.entities.Results;
  37 import org.onap.so.client.graphinventory.entities.uri.SimpleUri;
  38 import org.onap.so.client.graphinventory.exceptions.GraphInventoryPayloadException;
  39 import org.onap.so.client.graphinventory.exceptions.GraphInventoryUriComputationException;
  40 import org.onap.so.client.graphinventory.exceptions.GraphInventoryUriNotFoundException;
  41
  42 import com.fasterxml.jackson.core.type.TypeReference;
  43 import com.fasterxml.jackson.databind.ObjectMapper;
  44
  45 public class ServiceInstanceUri extends AAISimpleUri {
  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 GraphInventoryUriNotFoundException, GraphInventoryPayloadException {
  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 (BadRequestException e) {
  64                                 throw new GraphInventoryUriNotFoundException("Service instance " + id + " not found at: " + serviceInstanceUri.build());
  65
  66                         }
  67                         try {
  68                                 cachedValue = extractRelatedLink(resultJson);
  69                                 if (!cachedValue.isPresent()) {
  70                                         throw new GraphInventoryUriNotFoundException("Service instance " + id + " not found at: " + serviceInstanceUri.build());
  71                                 }
  72                         } catch (IOException e) {
  73                                 throw new GraphInventoryPayloadException("could not map payload: " + resultJson, e);
  74                         }
  75                 }
  76                 Optional<String> cachedValueOpt = this.getCachedValue();
  77                 return cachedValueOpt.isPresent() ? cachedValueOpt.get() : "";
  78         }
  79
  80         protected Optional<String> extractRelatedLink(String jsonString) throws IOException {
  81                 Optional<String> result;
  82                 ObjectMapper mapper = new ObjectMapper();
  83
  84                 Results<Map<String, String>> results = mapper.readValue(jsonString, new TypeReference<Results<Map<String, String>>>(){});
  85                 if (results.getResult().size() == 1) {
  86                         String uriString = results.getResult().get(0).get("resource-link");
  87                         URI uri = UriBuilder.fromUri(uriString).build();
  88                         String rawPath = uri.getRawPath();
  89                         result = Optional.of(rawPath.replaceAll("/aai/v\\d+", ""));
  90                 } else if (results.getResult().isEmpty()) {
  91                         result = Optional.empty();
  92                 } else {
  93                         throw new IllegalStateException("more than one result returned");
  94                 }
  95
  96                 return result;
  97         }
  98
  99         protected Optional<String> getCachedValue() {
 100                 return this.cachedValue;
 101         }
 102
 103         @Override
 104         public URI build() {
 105                 try {
 106                         if (this.values.length == 1) {
 107                                 String uri = getSerivceInstance(this.values[0]);
 108                                 Map<String, String> map = getURIKeys(uri);
 109                                 return super.build(map.values().toArray(values));
 110                         }
 111                 } catch (GraphInventoryUriNotFoundException | GraphInventoryPayloadException e) {
 112                         throw new GraphInventoryUriComputationException(e);
 113                 }
 114                 return super.build();
 115         }
 116
 117         @Override
 118         public ServiceInstanceUri clone() {
 119                 return new ServiceInstanceUri(this.internalURI.clone(), this.getCachedValue(), values);
 120         }
 121
 122         protected AAIQueryClient getQueryClient() {
 123                 AAIResourceUri uri = AAIUriFactory.createNodesUri(AAIObjectType.ALLOTTED_RESOURCE, "").clone();
 124                 return new AAIQueryClient();
 125         }
 126 }