aai-core/src/main/java/org/openecomp/aai/introspection/sideeffect/SideEffectRunner.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * org.openecomp.aai
   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.openecomp.aai.introspection.sideeffect;
  22
  23 import org.apache.tinkerpop.gremlin.structure.Vertex;
  24 import org.openecomp.aai.exceptions.AAIException;
  25 import org.openecomp.aai.introspection.Introspector;
  26 import org.openecomp.aai.serialization.db.DBSerializer;
  27 import org.openecomp.aai.serialization.engines.TransactionalGraphEngine;
  28
  29 import java.io.UnsupportedEncodingException;
  30 import java.lang.reflect.InvocationTargetException;
  31 import java.net.URISyntaxException;
  32 import java.util.LinkedHashSet;
  33 import java.util.Set;
  34
  35 public class SideEffectRunner {
  36
  37         protected final TransactionalGraphEngine dbEngine;
  38         protected final DBSerializer serializer;
  39         protected final Set<Class<? extends SideEffect>> sideEffects;
  40         protected SideEffectRunner(Builder builder) {
  41                 this.dbEngine = builder.getDbEngine();
  42                 this.serializer = builder.getSerializer();
  43                 this.sideEffects = builder.getSideEffects();
  44         }
  45
  46         public void execute(Introspector obj, Vertex self) throws AAIException {
  47
  48                 for (Class<? extends SideEffect> se : sideEffects) {
  49                         try {
  50                                 se.getConstructor(Introspector.class, Vertex.class, TransactionalGraphEngine.class, DBSerializer.class)
  51                                 .newInstance(obj, self, dbEngine, serializer).execute();
  52                         } catch (UnsupportedEncodingException | InstantiationException | IllegalAccessException
  53                                         | IllegalArgumentException | InvocationTargetException | NoSuchMethodException | SecurityException
  54                                         | URISyntaxException e) {
  55                                 throw new AAIException("strange exception", e);
  56                         }
  57                 }
  58         }
  59
  60         public static class Builder {
  61
  62                 private final TransactionalGraphEngine dbEngine;
  63                 private final DBSerializer serializer;
  64                 private final Set<Class<? extends SideEffect>> sideEffects;
  65
  66                 public Builder(final TransactionalGraphEngine dbEngine, final DBSerializer serializer) {
  67                         this.dbEngine = dbEngine;
  68                         this.serializer = serializer;
  69                         this.sideEffects = new LinkedHashSet<>();
  70                 }
  71
  72                 public Builder addSideEffect(Class<? extends SideEffect> se) {
  73                         sideEffects.add(se);
  74                         return this;
  75                 }
  76
  77                 public Builder addSideEffects(Class<? extends SideEffect>... sideEffects) {
  78                         for (Class<? extends SideEffect> se : sideEffects) {
  79                                 this.addSideEffect(se);
  80                         }
  81                         return this;
  82                 }
  83
  84                 public SideEffectRunner build() {
  85                         return new SideEffectRunner(this);
  86                 }
  87                 protected TransactionalGraphEngine getDbEngine() {
  88                         return dbEngine;
  89                 }
  90
  91                 protected DBSerializer getSerializer() {
  92                         return serializer;
  93                 }
  94
  95                 protected Set<Class<? extends SideEffect>> getSideEffects() {
  96                         return sideEffects;
  97                 }
  98         }
  99 }