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.Pathed;
  37 import org.onap.so.client.graphinventory.entities.uri.HttpAwareUri;
  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 import org.onap.so.client.graphinventory.exceptions.IncorrectNumberOfUriKeys;
  42
  43 import com.fasterxml.jackson.core.type.TypeReference;
  44 import com.fasterxml.jackson.databind.ObjectMapper;
  45
  46 public abstract class HttpLookupUri extends AAISimpleUri implements HttpAwareUri {
  47
  48         private Optional<String> cachedValue = Optional.empty();
  49         private final AAIObjectType aaiType;
  50         protected HttpLookupUri(AAIObjectType type, Object... values) {
  51                 super(type, values);
  52                 this.aaiType = type;
  53         }
  54         protected HttpLookupUri(AAIObjectType type, UriBuilder builder, Optional<String> cachedValue, Object... values) {
  55                 super(type, builder, values);
  56                 this.cachedValue = cachedValue;
  57                 this.aaiType = type;
  58         }
  59         protected String getObjectById(Object id) throws GraphInventoryUriNotFoundException, GraphInventoryPayloadException {
  60                 if (!this.getCachedValue().isPresent()) {
  61                         AAIResourceUri serviceInstanceUri = AAIUriFactory.createNodesUri(aaiType, id).format(Format.PATHED);
  62                         String resultJson;
  63                         try {
  64                                 resultJson = this.getResourcesClient().get(serviceInstanceUri, NotFoundException.class).getJson();
  65                         } catch (BadRequestException e) {
  66                                 throw new GraphInventoryUriNotFoundException(aaiType.typeName() + " " + id + " not found at: " + serviceInstanceUri.build());
  67
  68                         }
  69                         try {
  70                                 cachedValue = extractRelatedLink(resultJson);
  71                                 if (!cachedValue.isPresent()) {
  72                                         throw new GraphInventoryUriNotFoundException(aaiType.typeName() + " " + id + " not found at: " + serviceInstanceUri.build());
  73                                 }
  74                         } catch (IOException e) {
  75                                 throw new GraphInventoryPayloadException("could not map payload: " + resultJson, e);
  76                         }
  77                 }
  78                 Optional<String> cachedValueOpt = this.getCachedValue();
  79                 return cachedValueOpt.isPresent() ? cachedValueOpt.get() : "";
  80         }
  81
  82         protected Optional<String> extractRelatedLink(String jsonString) throws IOException {
  83                 Optional<String> result;
  84                 ObjectMapper mapper = new ObjectMapper();
  85
  86                 Results<Pathed> results = mapper.readValue(jsonString, new TypeReference<Results<Pathed>>(){});
  87                 if (results.getResult().size() == 1) {
  88                         String uriString = results.getResult().get(0).getResourceLink();
  89                         URI uri = UriBuilder.fromUri(uriString).build();
  90                         String rawPath = uri.getRawPath();
  91                         result = Optional.of(rawPath.replaceAll("/aai/v\\d+", ""));
  92                 } else if (results.getResult().isEmpty()) {
  93                         result = Optional.empty();
  94                 } else {
  95                         throw new IllegalStateException("more than one result returned");
  96                 }
  97
  98                 return result;
  99         }
 100
 101         protected Optional<String> getCachedValue() {
 102                 return this.cachedValue;
 103         }
 104
 105         @Override
 106         public URI build() {
 107                 try {
 108                         if (this.values.length == 1) {
 109                                 String uri = getObjectById(this.values[0]);
 110                                 Map<String, String> map = getURIKeys(uri);
 111                                 return super.build(map.values().toArray(values));
 112                         }
 113                 } catch (GraphInventoryUriNotFoundException | GraphInventoryPayloadException e) {
 114                         throw new GraphInventoryUriComputationException(e);
 115                 }
 116                 return super.build();
 117         }
 118
 119         @Override
 120         public abstract HttpLookupUri clone();
 121
 122         @Override
 123         public void validateValuesSize(String template, Object... values) {
 124                 try {
 125                         super.validateValuesSize(template, values);
 126                 } catch (IncorrectNumberOfUriKeys e) {
 127                         if (values.length == 1) {
 128                                 //Special case where we perform an http look up
 129                         } else {
 130                                 throw e;
 131                         }
 132                 }
 133         }
 134         public AAIResourcesClient getResourcesClient() {
 135                 return new AAIResourcesClient();
 136         }
 137         @Override
 138         public abstract URI buildNoNetwork();
 139 }