aai-core/src/main/java/org/onap/aai/dbgen/SchemaGenerator.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
  21 package org.onap.aai.dbgen;
  22 import org.onap.aai.util.AAIConstants;
  23 import com.google.common.collect.Multimap;
  24 import org.apache.tinkerpop.gremlin.structure.Vertex;
  25 import org.janusgraph.core.Cardinality;
  26 import org.janusgraph.core.Multiplicity;
  27 import org.janusgraph.core.PropertyKey;
  28 import org.janusgraph.core.schema.JanusGraphManagement;
  29 import org.janusgraph.core.schema.JanusGraphIndex;
  30 import org.janusgraph.core.schema.ConsistencyModifier;
  31 import org.onap.aai.config.SpringContextAware;
  32 import org.onap.aai.edges.EdgeIngestor;
  33 import org.onap.aai.edges.EdgeRule;
  34 import org.onap.aai.edges.exceptions.EdgeRuleNotFoundException;
  35 import org.onap.aai.introspection.Introspector;
  36 import org.onap.aai.introspection.LoaderUtil;
  37 import org.onap.aai.logging.LogFormatTools;
  38 import org.onap.aai.schema.enums.PropertyMetadata;
  39 import org.onap.aai.util.AAIConfig;
  40 import org.slf4j.Logger;
  41 import org.slf4j.LoggerFactory;
  42
  43 import java.util.HashMap;
  44 import java.util.HashSet;
  45 import java.util.Map;
  46 import java.util.Optional;
  47 import java.util.Set;
  48 import java.util.function.Function;
  49 import java.util.stream.Collectors;
  50
  51 public class SchemaGenerator {
  52
  53     private static final Logger LOGGER = LoggerFactory.getLogger(SchemaGenerator.class);
  54
  55     private SchemaGenerator() {
  56     }
  57
  58     /**
  59      * Load schema into JanusGraph.
  60      *
  61      * @param graphMgmt
  62      *        the graph mgmt
  63      */
  64     public static void loadSchemaIntoJanusGraph(final JanusGraphManagement graphMgmt, String backend) {
  65
  66         try {
  67             AAIConfig.init();
  68         } catch (Exception ex) {
  69             LOGGER.error(" ERROR - Could not run AAIConfig.init(). {}", LogFormatTools.getStackTop(ex));
  70             System.exit(1);
  71         }
  72
  73         // NOTE - JanusGraph 0.5.3 doesn't keep a list of legal node Labels.
  74         // They are only used when a vertex is actually being created.
  75         // JanusGraph 1.1 will keep track (we think).
  76
  77         // Use EdgeRules to make sure edgeLabels are defined in the db. NOTE:
  78         // the multiplicty used here is
  79         // always "MULTI". This is not the same as our internal "Many2Many",
  80         // "One2One", "One2Many" or "Many2One"
  81         // We use the same edge-label for edges between many different types of
  82         // nodes and our internal
  83         // multiplicty definitions depends on which two types of nodes are being
  84         // connected.
  85
  86         makeEdgeLabels(graphMgmt);
  87
  88
  89         Map<String, Introspector> objs = LoaderUtil.getLatestVersion().getAllObjects();
  90         Map<String, PropertyKey> seenProps = new HashMap<>();
  91
  92         for (Introspector obj : objs.values()) {
  93             for (String propName : obj.getProperties()) {
  94                 String dbPropName = propName;
  95                 Optional<String> alias = obj.getPropertyMetadata(propName, PropertyMetadata.DB_ALIAS);
  96                 if (alias.isPresent()) {
  97                     dbPropName = alias.get();
  98                 }
  99                 if (graphMgmt.containsRelationType(dbPropName)) {
 100                     LOGGER.debug(" PropertyKey  [{}] already existed in the DB. ", dbPropName);
 101                 } else {
 102                     Class<?> type = obj.getClass(propName);
 103                     Cardinality cardinality = Cardinality.SINGLE;
 104                     boolean process = false;
 105                     if (obj.isListType(propName) && obj.isSimpleGenericType(propName)) {
 106                         cardinality = Cardinality.SET;
 107                         type = obj.getGenericTypeClass(propName);
 108                         process = true;
 109                     } else if (obj.isSimpleType(propName)) {
 110                         process = true;
 111                     }
 112
 113                     if (process) {
 114
 115                         LOGGER.info("Creating PropertyKey: [{}], [{}], [{}]",
 116                                 dbPropName, type.getSimpleName(), cardinality);
 117                         PropertyKey propK;
 118                         if (!seenProps.containsKey(dbPropName)) {
 119                             propK = graphMgmt.makePropertyKey(dbPropName).dataType(type).cardinality(cardinality)
 120                                     .make();
 121                             if (dbPropName.equals("aai-uri")) {
 122                                 String aai_uri_lock_enabled = AAIConfig.get(AAIConstants.AAI_LOCK_URI_ENABLED, "false");
 123                                 LOGGER.info(" Info: aai_uri_lock_enabled:" + aai_uri_lock_enabled);
 124                                 if ("true".equals(aai_uri_lock_enabled)) {
 125                                     LOGGER.info(" Lock is being set for aai-uri Property.");
 126                                     graphMgmt.setConsistency(propK, ConsistencyModifier.LOCK);
 127                                 }
 128                             }
 129                             seenProps.put(dbPropName, propK);
 130                         } else {
 131                             propK = seenProps.get(dbPropName);
 132                         }
 133                         if (graphMgmt.containsGraphIndex(dbPropName)) {
 134                             LOGGER.debug(" Index  [{}] already existed in the DB. ", dbPropName);
 135                         } else {
 136                             if (obj.getIndexedProperties().contains(propName)) {
 137                                 JanusGraphIndex indexG = null;
 138                                 if (obj.getUniqueProperties().contains(propName)) {
 139                                     LOGGER.info("Add Unique index for PropertyKey: [{}]", dbPropName);
 140                                     indexG = graphMgmt.buildIndex(dbPropName, Vertex.class).addKey(propK).unique()
 141                                            .buildCompositeIndex();
 142                                 } else {
 143                                     LOGGER.info("Add index for PropertyKey: [{}]", dbPropName);
 144                                     indexG = graphMgmt.buildIndex(dbPropName, Vertex.class).addKey(propK).buildCompositeIndex();
 145                                 }
 146                                 if (indexG != null && dbPropName.equals("aai-uri")) {
 147                                     String aai_uri_lock_enabled = AAIConfig.get(AAIConstants.AAI_LOCK_URI_ENABLED, "false");
 148                                     LOGGER.info(" Info:: aai_uri_lock_enabled:" + aai_uri_lock_enabled);
 149                                     if ("true".equals(aai_uri_lock_enabled)) {
 150                                         LOGGER.info("Lock is being set for aai-uri Index.");
 151                                         graphMgmt.setConsistency(indexG, ConsistencyModifier.LOCK);
 152                                     }
 153                                 }
 154                             } else {
 155                                 LOGGER.info("No index added for PropertyKey: [{}]", dbPropName);
 156                             }
 157                         }
 158                     }
 159                 }
 160             }
 161         }
 162
 163         LOGGER.info("-- About to call graphMgmt commit");
 164         if (backend != null) {
 165             LOGGER.info("Successfully loaded the schema to {}", backend);
 166         }
 167
 168         graphMgmt.commit();
 169     }
 170
 171     private static void makeEdgeLabels(JanusGraphManagement graphMgmt) {
 172         try {
 173             EdgeIngestor edgeIngestor = SpringContextAware.getBean(EdgeIngestor.class);
 174
 175             Set<String> labels = Optional.ofNullable(edgeIngestor.getAllCurrentRules())
 176                     .map(collectValues(EdgeRule::getLabel))
 177                     .orElseGet(HashSet::new);
 178
 179             labels.forEach(label -> {
 180                 if (graphMgmt.containsRelationType(label)) {
 181                     LOGGER.debug(" EdgeLabel  [{}] already existed. ", label);
 182                 } else {
 183                     LOGGER.debug("Making EdgeLabel: [{}]", label);
 184                     graphMgmt.makeEdgeLabel(label).multiplicity(Multiplicity.valueOf("MULTI")).make();
 185                 }
 186             });
 187         } catch (EdgeRuleNotFoundException e) {
 188             LOGGER.error("Unable to find all rules {}", LogFormatTools.getStackTop(e));
 189         }
 190     }
 191
 192     /**
 193      * Returns a function collecting all the values in a {@link com.google.common.collect.Multimap}
 194      * given a mapping function
 195      *
 196      * @param f The mapper function
 197      * @param <K> The type of key used by the provided {@link com.google.common.collect.Multimap}
 198      * @param <V> The type of value used by the provided {@link com.google.common.collect.Multimap}
 199      * @param <V0> The type which <V> is mapped to
 200      */
 201     private static <K, V, V0> Function<Multimap<K, V>, Set<V0>> collectValues(Function<V, V0> f) {
 202         return as -> as.values().stream().map(f).collect(Collectors.toSet());
 203     }
 204
 205 }