aai-core/src/main/java/org/onap/aai/restcore/util/URITools.java

   1 /**
   2  * ============LICENSE_START=======================================================
   3  * org.onap.aai
   4  * ================================================================================
   5  * Copyright © 2017-2018 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 package org.onap.aai.restcore.util;
  21
  22 import java.io.UnsupportedEncodingException;
  23 import java.net.URI;
  24 import java.util.HashMap;
  25 import java.util.LinkedHashSet;
  26 import java.util.Map;
  27 import java.util.Map.Entry;
  28 import java.util.Optional;
  29 import java.util.Set;
  30 import java.util.regex.Matcher;
  31 import java.util.regex.Pattern;
  32
  33 import javax.ws.rs.core.MultivaluedHashMap;
  34 import javax.ws.rs.core.MultivaluedMap;
  35
  36 import org.springframework.web.util.UriUtils;
  37
  38 import org.onap.aai.introspection.Introspector;
  39 import org.onap.aai.introspection.sideeffect.exceptions.AAIMissingRequiredPropertyException;
  40 import org.onap.aai.schema.enums.PropertyMetadata;
  41
  42 public class URITools {
  43
  44         protected static final Pattern template = Pattern.compile("\\{(.*?)\\}");
  45
  46         public static MultivaluedMap<String, String> getQueryMap(URI uri) {
  47                 MultivaluedMap<String, String> result = new MultivaluedHashMap<>();
  48                 String queryParams = uri.getRawQuery();
  49                 if (queryParams != null) {
  50                         try {
  51                                 String[] sections = queryParams.split("&");
  52                                 String[] query = null;
  53                                 String key, value = "";
  54                                 for (String section : sections) {
  55                                         query = section.split("=");
  56                                         key = UriUtils.decode(query[0], "UTF-8");
  57                                         value = UriUtils.decode(query[1], "UTF-8");
  58                                         if (result.containsKey(key)) {
  59                                                 result.add(key, value);
  60                                         } else {
  61                                                 result.putSingle(key, value);
  62                                         }
  63                                 }
  64                         } catch (UnsupportedEncodingException e ) {
  65
  66                         }
  67                 }
  68                 return result;
  69
  70         }
  71
  72         public static Optional<String> replaceTemplates(Introspector obj, String uriString, PropertyMetadata metadata, boolean replaceWithWildcard) throws AAIMissingRequiredPropertyException {
  73                 String result = uriString;
  74                 final Map<String, String> propMap = URITools.findProperties(obj, uriString, metadata, replaceWithWildcard);
  75                 if (propMap.isEmpty()) {
  76                         return Optional.empty();
  77                 }
  78                 for (Entry<String, String> entry : propMap.entrySet()) {
  79                         result = result.replaceAll("\\{" + entry.getKey() + "\\}", entry.getValue());
  80                 }
  81                 //drop out wildcards if they exist
  82                 result = result.replaceFirst("/[^/]+?(?:/\\*)+", "");
  83                 return Optional.of(result);
  84         }
  85
  86         private static Map<String, String> findProperties(Introspector obj, String uriString, PropertyMetadata metadata, boolean replaceWithWildcard) throws AAIMissingRequiredPropertyException {
  87
  88                 final Map<String, String> result = new HashMap<>();
  89                 final Set<String> missing = new LinkedHashSet<>();
  90                 Matcher m = template.matcher(uriString);
  91                 int properties = 0;
  92                 while (m.find()) {
  93                         String propName = m.group(1);
  94                         String value = obj.getValue(propName);
  95                         properties++;
  96                         if (value != null) {
  97                                 result.put(propName, value);
  98                         } else {
  99                                 if (replaceWithWildcard) {
 100                                         result.put(propName, "*");
 101                                 }
 102                                 missing.add(propName);
 103                         }
 104                 }
 105
 106                 if (!missing.isEmpty() && (properties != missing.size())) {
 107                         throw new AAIMissingRequiredPropertyException("Cannot complete " + metadata.toString() + " uri. Missing properties " + missing);
 108                 }
 109                 return result;
 110         }
 111
 112 }