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
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15 * distributed under the License is distributed on an "AS IS" BASIS,
16 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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20 * ECOMP is a trademark and service mark of AT&T Intellectual Property.
23 package org.openecomp.appc.listener;
25 import java.util.Properties;
28 * A class for instantiating Listener objects. It is primarily used to hold properties that start with the given prefix.
29 * It also holds a class that implements {@see Listener} and will be used by the controller to spawn a new listener
35 public class ListenerProperties {
37 private String prefix;
39 private Class<? extends Listener> listenerClass;
41 private Properties props;
44 * Creates a new listener object with the given prefix and properties. Any property starting with the prefix is
45 * added to the internal properties object with the prefix removed. All other properties are ignored.
46 * ListenerProperties constructor
49 * The prefix of the properties to load
51 * The properties object to load from.
53 public ListenerProperties(String prefix, Properties allProps) {
55 props = new Properties();
57 String dottedPrefix = String.format("%s.", prefix);
58 for (String key : allProps.stringPropertyNames()) {
59 if (key.startsWith(dottedPrefix) && key.length() > dottedPrefix.length()) {
60 props.put(key.substring(dottedPrefix.length()), allProps.get(key));
66 * @return The prefix of these properties
68 public String getPrefix() {
73 * Sets the listener class. Will be used by {@see Controller} to instantiate the Listener thread for this object
76 * The class to be created. Implements {@see Listener}
78 public void setListenerClass(Class<? extends Listener> cls) {
79 this.listenerClass = cls;
83 * @return The class that will be used by {@see Controller} to instantiate the Listener thread for this object
85 public Class<? extends Listener> getListenerClass() {
90 * Returns a property matching a given KEYS
93 * The KEYS object who's value to return.
94 * @return The value of the property or null if none exists
96 public String getProperty(KEYS key) {
97 return getProperty(key, null);
101 * Returns a property matching a given string.
104 * The key who's value to return.
105 * @return The value of the property or null if none exists
107 public String getProperty(String key) {
108 return getProperty(key, null);
112 * Returns a property matching a given KEYS
115 * The KEYS object who's value to return.
116 * @param defaultValue
117 * The value to return if the property is not found
118 * @return The value of the property or null if none exists
120 public String getProperty(KEYS key, String defaultValue) {
121 return getProperty(key.getPropertySuffix(), defaultValue);
125 * Returns a property matching a given string.
128 * The key who's value to return.
129 * @param defaultValue
130 * The value to return if the property is not found
131 * @return The value of the property or null if none exists
133 public String getProperty(String key, String defaultValue) {
134 return props.getProperty(key, defaultValue);
138 * @return The properties object containing all properties
140 public Properties getProperties() {
145 * Reads the <i>prefix</i>.disabled property to determine if the listener is disabled and should not be run by the
146 * controller. Defaults to false if property not set or value cannot be parsed.
148 * @return true if the listener is disabled and should not be started. false if the listener should be start
149 * normally (default).
151 public boolean isDisabled() {
152 return Boolean.valueOf(getProperty(KEYS.DISABLED, "false"));
156 public String toString() {
157 return String.format("%s", prefix);
162 * Set of common properties that will be used by most systems. Primarily relating to DMaaP and ThreadPools
164 * @since Apr 25, 2016
169 * Property to determine if the listener should be disabled. If not set, defaults to false
171 DISABLED("disabled"),
174 * Property for the message service type. Should be a lower case string. See MessageService.
176 MESSAGE_SERVICE("service"),
179 * A hostname or comma separated list (no spaces) of hostnames of servers in a cluster. Can have ports included
183 * <li>server1.appc.openecomp.org</li>
184 * <li>server1.appc.openecomp.org:3904</li>
185 * <li>server1.appc.openecomp.org,server2.appc.openecomp.org</li>
188 HOSTS("poolMembers"),
191 * The topic that will be used for DMaaP read operations. Can only support a single topic.
193 TOPIC_READ("topic.read"),
196 * The topic or topics that will be used to write to. If multiple topics are provided, should be in a comma
197 * seperated list with no spaces.<br>
201 * <li>TOPIC-1,TOPIC-2,ANOTHER-TOPIC</li>
204 TOPIC_WRITE("topic.write"),
207 * The highland park filter to use on read requests. If you are reading and writing to the same topic this must
208 * be provided. Filter should be in JSON format (not url escaped).
210 TOPIC_READ_FILTER("topic.read.filter"),
213 * The amount of time in seconds that the DMaaP polling connection should stay open for. Recommended to be set
214 * high (around 60 seconds) as most clients will return immediately and not wait until the timeout is up to
215 * return if they have data.
217 TOPIC_READ_TIMEOUT("topic.read.timeout"),
220 * The name of the client to use. Should be unique to the application.
222 CLIENT_NAME("client.name"),
225 * The id of the client to use. Should be unique for each instance of the application in an environment.
227 CLIENT_ID("client.name.id"),
230 * The User (DMaaP) to use for authentication. If a user is provided, you must include the
231 * domain name (e.g. example<b>@example.com</b>).
233 AUTH_USER_KEY("client.key"),
236 * The password (DMaaP) to use for authentication.
238 AUTH_SECRET_KEY("client.secret"),
241 * The minimum amount of size of the queue. A client should request new messages once the queue has dropped
244 THREADS_MIN_QUEUE("threads.queuesize.min"),
247 * The maximum size of the queue. A client will request no new messages once this maximum size has been reached.
249 THREADS_MAX_QUEUE("threads.queuesize.max"),
252 * The minimum size of the worker threads pool. This is the pool each listener will use to launch longer running
255 THREADS_MIN_POOL("threads.poolsize.min"),
258 * The maximum size of the worker threads pool. This is the pool each listener will use to launch longer running
261 THREADS_MAX_POOL("threads.poolsize.max");
263 private String suffix;
265 private KEYS(String val) {
271 * The prefix to prepend
272 * @return a fully property name that corroponds to what is used in the properties file. Format is PREFIX.KEY
274 public String getFullProp(String prefix) {
275 return String.format("%s.%s", prefix, suffix);
278 public String getPropertySuffix() {