2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
6 * Copyright (C) 2017 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=========================================================
20 * ECOMP is a trademark and service mark of AT&T Intellectual Property.
23 package org.openecomp.appc.listener.impl;
25 import java.util.HashMap;
26 import java.util.Iterator;
29 import java.util.concurrent.ArrayBlockingQueue;
30 import java.util.concurrent.ThreadPoolExecutor;
31 import java.util.concurrent.TimeUnit;
33 import org.apache.commons.lang3.concurrent.BasicThreadFactory;
34 import org.openecomp.appc.listener.Controller;
35 import org.openecomp.appc.listener.Listener;
36 import org.openecomp.appc.listener.ListenerProperties;
38 import com.att.eelf.configuration.EELFLogger;
39 import com.att.eelf.configuration.EELFManager;
43 * A common implementation of a controller. This controller should not need to be modified to implement new listeners
46 public class ControllerImpl implements Controller {
48 private final EELFLogger LOG = EELFManager.getInstance().getLogger(ControllerImpl.class);
50 private int LISTENER_COUNT = 1;
52 private Map<ListenerProperties, Listener> listeners = null;
54 private ThreadPoolExecutor executor;
57 * Creates a Controller with the set of listener properties which will be used to start listener threads.
60 * A non null Set of ListenerProperties
62 public ControllerImpl(Set<ListenerProperties> properties) {
63 listeners = new HashMap<ListenerProperties, Listener>();
64 for (ListenerProperties props : properties) {
65 if (props.getClass() != null) {
66 listeners.put(props, null);
68 LOG.error(String.format(
69 "The ListenerProperties %s has no Listener class associated with it and will not run.", props));
73 LISTENER_COUNT = properties.size();
75 executor = new ThreadPoolExecutor(LISTENER_COUNT, LISTENER_COUNT, 1, TimeUnit.SECONDS,
76 new ArrayBlockingQueue<Runnable>(LISTENER_COUNT));
78 // Custom Named thread factory
79 BasicThreadFactory threadFactory = new BasicThreadFactory.Builder().namingPattern("Appc-Listener-%d").build();
80 executor.setThreadFactory(threadFactory);
85 LOG.info("Starting DMaaP Controller.");
86 for (ListenerProperties props : listeners.keySet()) {
88 if (props.isDisabled()) {
89 LOG.warn(String.format("The listener %s is disabled and will not be run", props.getPrefix()));
91 Listener l = props.getListenerClass().getConstructor(ListenerProperties.class).newInstance(props);
92 l.setListenerId(props.getPrefix());
93 listeners.put(props, l);
96 } catch (Exception e) {
98 LOG.error(String.format("Exception while starting listener %s.", props), e);
104 public void stop(boolean stopNow) {
105 LOG.info("Stopping DMaaP Controller.");
106 Iterator<Listener> itr = listeners.values().iterator();
107 while (itr.hasNext()) {
108 Listener l = itr.next();
118 executor.awaitTermination(10, TimeUnit.SECONDS);
119 } catch (InterruptedException e) {
124 public Map<ListenerProperties, Listener> getListeners() {