2 * ============LICENSE_START==========================================
4 * ===================================================================
5 * Copyright © 2017-2018 AT&T Intellectual Property. All rights reserved.
6 * Copyright © 2017-2018 Amdocs
7 * ===================================================================
8 * Licensed under the Apache License, Version 2.0 (the "License");
9 * you may not use this file except in compliance with the License.
10 * You may obtain a copy of the License at
12 * http://www.apache.org/licenses/LICENSE-2.0
14 * Unless required by applicable law or agreed to in writing, software
15 * distributed under the License is distributed on an "AS IS" BASIS,
16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17 * See the License for the specific language governing permissions and
18 * limitations under the License.
19 * ============LICENSE_END============================================
21 package org.onap.aai.champcore.graph.impl;
23 import java.util.Map.Entry;
24 import java.util.concurrent.ConcurrentHashMap;
25 import java.util.concurrent.atomic.AtomicBoolean;
27 import org.onap.aai.champcore.ChampAPI;
28 import org.onap.aai.champcore.ChampGraph;
29 import org.slf4j.Logger;
30 import org.slf4j.LoggerFactory;
32 public class ChampAPIImpl implements ChampAPI {
34 private static final Logger LOGGER = LoggerFactory.getLogger(ChampAPIImpl.class);
36 private final AtomicBoolean shutdown;
37 private final String type;
38 private final ConcurrentHashMap<String, ChampGraph> graphs;
40 public ChampAPIImpl(String type) {
42 this.graphs = new ConcurrentHashMap<String, ChampGraph> ();
43 this.shutdown = new AtomicBoolean(false);
46 private ConcurrentHashMap<String, ChampGraph> getGraphs() {
51 public ChampGraph getGraph(String graphName) {
53 throw new IllegalStateException("Cannot call getGraph() after shutdown() has been initiated");
56 if (getGraphs().containsKey(graphName)) {
57 return getGraphs().get(graphName);
60 // At this point, we know a graph with this name doesn't exist. Create and return it.
61 final ChampGraph graph = new InMemoryChampGraphImpl.Builder().build();
62 graphs.put(graphName, graph);
67 public void shutdown() {
68 if (shutdown.compareAndSet(false, true)) {
69 for (Entry<String, ChampGraph> graphEntry : graphs.entrySet()) {
70 LOGGER.info("Shutting down graph {}", graphEntry.getKey());
73 graphEntry.getValue().shutdown();
74 LOGGER.info("Graph {} shutdown successfully", graphEntry.getKey());
75 } catch (Throwable t) {
76 LOGGER.warn("Caught exception while shutting down graph " + graphEntry.getKey(), t);
83 public String getType() {