aai-core/src/main/java/org/onap/aai/introspection/sideeffect/SideEffect.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.introspection.sideeffect;
  21
  22 import org.apache.tinkerpop.gremlin.structure.Vertex;
  23 import org.onap.aai.db.props.AAIProperties;
  24 import org.onap.aai.exceptions.AAIException;
  25 import org.onap.aai.introspection.Introspector;
  26 import org.onap.aai.introspection.Loader;
  27 import org.onap.aai.introspection.LoaderFactory;
  28 import org.onap.aai.introspection.ModelType;
  29 import org.onap.aai.introspection.sideeffect.exceptions.AAIMissingRequiredPropertyException;
  30 import org.onap.aai.schema.enums.PropertyMetadata;
  31 import org.onap.aai.serialization.db.DBSerializer;
  32 import org.onap.aai.serialization.engines.TransactionalGraphEngine;
  33
  34 import java.io.UnsupportedEncodingException;
  35 import java.net.URISyntaxException;
  36 import java.util.*;
  37 import java.util.Map.Entry;
  38 import java.util.regex.Matcher;
  39 import java.util.regex.Pattern;
  40
  41 public abstract class SideEffect {
  42
  43         protected static final Pattern template = Pattern.compile("\\{(.*?)\\}");
  44         protected final Introspector obj;
  45         protected final TransactionalGraphEngine dbEngine;
  46         protected final DBSerializer serializer;
  47         protected final Loader latestLoader = LoaderFactory.createLoaderForVersion(ModelType.MOXY, AAIProperties.LATEST);
  48         protected final Vertex self;
  49         public SideEffect (Introspector obj, Vertex self, TransactionalGraphEngine dbEngine, DBSerializer serializer) {
  50                 this.obj = obj;
  51                 this.dbEngine = dbEngine;
  52                 this.serializer = serializer;
  53                 this.self = self;
  54         }
  55
  56         protected void execute() throws UnsupportedEncodingException, URISyntaxException, AAIException {
  57                 final Map<String, String> properties = this.findPopertiesWithMetadata(obj, this.getPropertyMetadata());
  58                 for (Entry<String, String> entry : properties.entrySet()) {
  59                         Optional<String> populatedUri = this.replaceTemplates(obj, entry.getValue());
  60                         Optional<String> completeUri = this.resolveRelativePath(populatedUri);
  61                         this.processURI(completeUri, entry);
  62                 }
  63         }
  64
  65         protected Map<String, String> findPopertiesWithMetadata(Introspector obj, PropertyMetadata metadata) {
  66                 final Map<String, String> result = new HashMap<>();
  67                 for (String prop : obj.getProperties()) {
  68                         final Map<PropertyMetadata, String> map = obj.getPropertyMetadata(prop);
  69                         if (map.containsKey(metadata)) {
  70                                 result.put(prop, map.get(metadata));
  71                         }
  72                 }
  73                 return result;
  74         }
  75
  76         protected Map<String, String> findProperties(Introspector obj, String uriString) throws AAIMissingRequiredPropertyException {
  77
  78                 final Map<String, String> result = new HashMap<>();
  79                 final Set<String> missing = new LinkedHashSet<>();
  80                 Matcher m = template.matcher(uriString);
  81                 int properties = 0;
  82                 while (m.find()) {
  83                         String propName = m.group(1);
  84                         String value = obj.getValue(propName);
  85                         properties++;
  86                         if (value != null) {
  87                                 result.put(propName, value);
  88                         } else {
  89                                 if (replaceWithWildcard()) {
  90                                         result.put(propName, "*");
  91                                 }
  92                                 missing.add(propName);
  93                         }
  94                 }
  95
  96                 if (!missing.isEmpty() && (properties != missing.size())) {
  97                         throw new AAIMissingRequiredPropertyException("Cannot complete " + this.getPropertyMetadata().toString() + " uri. Missing properties " + missing);
  98                 }
  99                 return result;
 100         }
 101
 102         private Optional<String> replaceTemplates(Introspector obj, String uriString) throws AAIMissingRequiredPropertyException {
 103                 String result = uriString;
 104                 final Map<String, String> propMap = this.findProperties(obj, uriString);
 105                 if (propMap.isEmpty()) {
 106                         return Optional.empty();
 107                 }
 108                 for (Entry<String, String> entry : propMap.entrySet()) {
 109                         result = result.replaceAll("\\{" + entry.getKey() + "\\}", entry.getValue());
 110                 }
 111                 //drop out wildcards if they exist
 112                 result = result.replaceFirst("/[^/]+?(?:/\\*)+", "");
 113                 return Optional.of(result);
 114         }
 115
 116         private Optional<String> resolveRelativePath(Optional<String> populatedUri) throws UnsupportedEncodingException {
 117                 if (!populatedUri.isPresent()) {
 118                         return Optional.empty();
 119                 } else {
 120                         return Optional.of(populatedUri.get().replaceFirst("\\./", this.serializer.getURIForVertex(self) + "/"));
 121                 }
 122         }
 123
 124         protected abstract boolean replaceWithWildcard();
 125         protected abstract PropertyMetadata getPropertyMetadata();
 126         protected abstract void processURI(Optional<String> completeUri, Entry<String, String> entry) throws URISyntaxException, UnsupportedEncodingException, AAIException;
 127 }