common/src/main/java/org/onap/so/client/aai/entities/uri/HttpLookupUri.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.Map;
  26 import java.util.Optional;
  27
  28 import javax.ws.rs.BadRequestException;
  29 import javax.ws.rs.NotFoundException;
  30 import javax.ws.rs.core.UriBuilder;
  31
  32 import org.onap.so.client.aai.AAIObjectType;
  33 import org.onap.so.client.aai.AAIResourcesClient;
  34 import org.onap.so.client.aai.entities.Results;
  35 import org.onap.so.client.graphinventory.Format;
  36 import org.onap.so.client.graphinventory.entities.uri.HttpAwareUri;
  37 import org.onap.so.client.graphinventory.exceptions.GraphInventoryPayloadException;
  38 import org.onap.so.client.graphinventory.exceptions.GraphInventoryUriComputationException;
  39 import org.onap.so.client.graphinventory.exceptions.GraphInventoryUriNotFoundException;
  40 import org.onap.so.client.graphinventory.exceptions.IncorrectNumberOfUriKeys;
  41
  42 import com.fasterxml.jackson.core.type.TypeReference;
  43 import com.fasterxml.jackson.databind.ObjectMapper;
  44
  45 public abstract class HttpLookupUri extends AAISimpleUri implements HttpAwareUri {
  46
  47         private Optional<String> cachedValue = Optional.empty();
  48         private final AAIObjectType aaiType;
  49         protected HttpLookupUri(AAIObjectType type, Object... values) {
  50                 super(type, values);
  51                 this.aaiType = type;
  52         }
  53         protected HttpLookupUri(AAIObjectType type, UriBuilder builder, Optional<String> cachedValue, Object... values) {
  54                 super(type, builder, values);
  55                 this.cachedValue = cachedValue;
  56                 this.aaiType = type;
  57         }
  58         protected String getObjectById(Object id) throws GraphInventoryUriNotFoundException, GraphInventoryPayloadException {
  59                 if (!this.getCachedValue().isPresent()) {
  60                         AAIResourceUri serviceInstanceUri = AAIUriFactory.createNodesUri(aaiType, id).format(Format.PATHED);
  61                         String resultJson;
  62                         try {
  63                                 resultJson = this.getResourcesClient().get(serviceInstanceUri, NotFoundException.class).getJson();
  64                         } catch (BadRequestException e) {
  65                                 throw new GraphInventoryUriNotFoundException(aaiType.typeName() + " " + id + " not found at: " + serviceInstanceUri.build());
  66
  67                         }
  68                         try {
  69                                 cachedValue = extractRelatedLink(resultJson);
  70                                 if (!cachedValue.isPresent()) {
  71                                         throw new GraphInventoryUriNotFoundException(aaiType.typeName() + " " + id + " not found at: " + serviceInstanceUri.build());
  72                                 }
  73                         } catch (IOException e) {
  74                                 throw new GraphInventoryPayloadException("could not map payload: " + resultJson, e);
  75                         }
  76                 }
  77                 Optional<String> cachedValueOpt = this.getCachedValue();
  78                 return cachedValueOpt.isPresent() ? cachedValueOpt.get() : "";
  79         }
  80
  81         protected Optional<String> extractRelatedLink(String jsonString) throws IOException {
  82                 Optional<String> result;
  83                 ObjectMapper mapper = new ObjectMapper();
  84
  85                 Results<Map<String, String>> results = mapper.readValue(jsonString, new TypeReference<Results<Map<String, String>>>(){});
  86                 if (results.getResult().size() == 1) {
  87                         String uriString = results.getResult().get(0).get("resource-link");
  88                         URI uri = UriBuilder.fromUri(uriString).build();
  89                         String rawPath = uri.getRawPath();
  90                         result = Optional.of(rawPath.replaceAll("/aai/v\\d+", ""));
  91                 } else if (results.getResult().isEmpty()) {
  92                         result = Optional.empty();
  93                 } else {
  94                         throw new IllegalStateException("more than one result returned");
  95                 }
  96
  97                 return result;
  98         }
  99
 100         protected Optional<String> getCachedValue() {
 101                 return this.cachedValue;
 102         }
 103
 104         @Override
 105         public URI build() {
 106                 try {
 107                         if (this.values.length == 1) {
 108                                 String uri = getObjectById(this.values[0]);
 109                                 Map<String, String> map = getURIKeys(uri);
 110                                 return super.build(map.values().toArray(values));
 111                         }
 112                 } catch (GraphInventoryUriNotFoundException | GraphInventoryPayloadException e) {
 113                         throw new GraphInventoryUriComputationException(e);
 114                 }
 115                 return super.build();
 116         }
 117
 118         @Override
 119         public abstract HttpLookupUri clone();
 120
 121         @Override
 122         public void validateValuesSize(String template, Object... values) {
 123                 try {
 124                         super.validateValuesSize(template, values);
 125                 } catch (IncorrectNumberOfUriKeys e) {
 126                         if (values.length == 1) {
 127                                 //Special case where we perform an http look up
 128                         } else {
 129                                 throw e;
 130                         }
 131                 }
 132         }
 133         public AAIResourcesClient getResourcesClient() {
 134                 return new AAIResourcesClient();
 135         }
 136         @Override
 137         public abstract URI buildNoNetwork();
 138 }