2 * Copyright 2017 ZTE Corporation.
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
16 package org.onap.holmes.engine.dmaap;
18 import java.util.HashMap;
19 import java.util.Iterator;
21 import java.util.concurrent.ConcurrentHashMap;
22 import javax.annotation.PreDestroy;
23 import javax.inject.Inject;
24 import lombok.extern.slf4j.Slf4j;
25 import org.jvnet.hk2.annotations.Service;
26 import org.onap.holmes.dsa.dmaappolling.Subscriber;
27 import org.onap.holmes.engine.manager.DroolsEngine;
31 public class SubscriberAction {
34 private DroolsEngine droolsEngine;
35 private HashMap<String, DMaaPAlarmPolling> pollingTasks = new HashMap<>();
37 public synchronized void addSubscriber(Subscriber subscriber) {
38 if (!pollingTasks.containsKey(subscriber.getTopic())) {
39 DMaaPAlarmPolling pollingTask = new DMaaPAlarmPolling(subscriber, droolsEngine);
40 Thread thread = new Thread(pollingTask);
42 pollingTasks.put(subscriber.getTopic(), pollingTask);
43 log.info("Subscribe to topic: " + subscriber.getUrl());
47 public synchronized void removeSubscriber(Subscriber subscriber) {
48 if (pollingTasks.containsKey(subscriber.getTopic())) {
49 pollingTasks.get(subscriber.getTopic()).stopTask();
50 pollingTasks.remove(subscriber.getTopic());
52 log.info("Topic unsubscribed: " + subscriber.getUrl());
56 public void stopPollingTasks() {
57 Iterator iterator = pollingTasks.entrySet().iterator();
58 while (iterator.hasNext()) {
59 Map.Entry entry = (Map.Entry)iterator.next();
60 String key = (String) entry.getKey();
61 pollingTasks.get(key).stopTask();