2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Copyright (C) 2017 Amdocs
8 * =============================================================================
9 * Licensed under the Apache License, Version 2.0 (the "License");
10 * you may not use this file except in compliance with the License.
11 * You may obtain a copy of the License at
13 * http://www.apache.org/licenses/LICENSE-2.0
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22 * ============LICENSE_END=========================================================
25 package org.openecomp.appc.listener;
27 import java.util.Properties;
30 * A class for instantiating Listener objects. It is primarily used to hold properties that start with the given prefix.
31 * It also holds a class that implements {@see Listener} and will be used by the controller to spawn a new listener
37 public class ListenerProperties {
39 private String prefix;
41 private Class<? extends Listener> listenerClass;
43 private Properties props;
46 * Creates a new listener object with the given prefix and properties. Any property starting with the prefix is
47 * added to the internal properties object with the prefix removed. All other properties are ignored.
48 * ListenerProperties constructor
51 * The prefix of the properties to load
53 * The properties object to load from.
55 public ListenerProperties(String prefix, Properties allProps) {
57 props = new Properties();
59 String dottedPrefix = String.format("%s.", prefix);
60 for (String key : allProps.stringPropertyNames()) {
61 if (key.startsWith(dottedPrefix) && key.length() > dottedPrefix.length()) {
62 props.put(key.substring(dottedPrefix.length()), allProps.get(key));
68 * @return The prefix of these properties
70 public String getPrefix() {
75 * Sets the listener class. Will be used by {@see Controller} to instantiate the Listener thread for this object
78 * The class to be created. Implements {@see Listener}
80 public void setListenerClass(Class<? extends Listener> cls) {
81 this.listenerClass = cls;
85 * @return The class that will be used by {@see Controller} to instantiate the Listener thread for this object
87 public Class<? extends Listener> getListenerClass() {
92 * Returns a property matching a given KEYS
95 * The KEYS object who's value to return.
96 * @return The value of the property or null if none exists
98 public String getProperty(KEYS key) {
99 return getProperty(key, null);
103 * Returns a property matching a given string.
106 * The key who's value to return.
107 * @return The value of the property or null if none exists
109 public String getProperty(String key) {
110 return getProperty(key, null);
114 * Returns a property matching a given KEYS
117 * The KEYS object who's value to return.
118 * @param defaultValue
119 * The value to return if the property is not found
120 * @return The value of the property or null if none exists
122 public String getProperty(KEYS key, String defaultValue) {
123 return getProperty(key.getPropertySuffix(), defaultValue);
127 * Returns a property matching a given string.
130 * The key who's value to return.
131 * @param defaultValue
132 * The value to return if the property is not found
133 * @return The value of the property or null if none exists
135 public String getProperty(String key, String defaultValue) {
136 return props.getProperty(key, defaultValue);
140 * @return The properties object containing all properties
142 public Properties getProperties() {
147 * Reads the <i>prefix</i>.disabled property to determine if the listener is disabled and should not be run by the
148 * controller. Defaults to false if property not set or value cannot be parsed.
150 * @return true if the listener is disabled and should not be started. false if the listener should be start
151 * normally (default).
153 public boolean isDisabled() {
154 return Boolean.valueOf(getProperty(KEYS.DISABLED, "false"));
158 public String toString() {
159 return String.format("%s", prefix);
164 * Set of common properties that will be used by most systems. Primarily relating to DMaaP and ThreadPools
166 * @since Apr 25, 2016
171 * Property to determine if the listener should be disabled. If not set, defaults to false
173 DISABLED("disabled"),
176 * Property for the message service type. Should be a lower case string. See MessageService.
178 MESSAGE_SERVICE("service"),
181 * A hostname or comma separated list (no spaces) of hostnames of servers in a cluster. Can have ports included
185 * <li>server1.appc.openecomp.org</li>
186 * <li>server1.appc.openecomp.org:3904</li>
187 * <li>server1.appc.openecomp.org,server2.appc.openecomp.org</li>
190 HOSTS("poolMembers"),
193 * The topic that will be used for DMaaP read operations. Can only support a single topic.
195 TOPIC_READ("topic.read"),
198 * The topic or topics that will be used to write to. If multiple topics are provided, should be in a comma
199 * seperated list with no spaces.<br>
203 * <li>TOPIC-1,TOPIC-2,ANOTHER-TOPIC</li>
206 TOPIC_WRITE("topic.write"),
209 * The highland park filter to use on read requests. If you are reading and writing to the same topic this must
210 * be provided. Filter should be in JSON format (not url escaped).
212 TOPIC_READ_FILTER("topic.read.filter"),
215 * The amount of time in seconds that the DMaaP polling connection should stay open for. Recommended to be set
216 * high (around 60 seconds) as most clients will return immediately and not wait until the timeout is up to
217 * return if they have data.
219 TOPIC_READ_TIMEOUT("topic.read.timeout"),
222 * The name of the client to use. Should be unique to the application.
224 CLIENT_NAME("client.name"),
227 * The id of the client to use. Should be unique for each instance of the application in an environment.
229 CLIENT_ID("client.name.id"),
232 * The User (DMaaP) to use for authentication. If a user is provided, you must include the
233 * domain name (e.g. example<b>@example.com</b>).
235 AUTH_USER_KEY("client.key"),
238 * The password (DMaaP) to use for authentication.
240 AUTH_SECRET_KEY("client.secret"),
243 * The minimum amount of size of the queue. A client should request new messages once the queue has dropped
246 THREADS_MIN_QUEUE("threads.queuesize.min"),
249 * The maximum size of the queue. A client will request no new messages once this maximum size has been reached.
251 THREADS_MAX_QUEUE("threads.queuesize.max"),
254 * The minimum size of the worker threads pool. This is the pool each listener will use to launch longer running
257 THREADS_MIN_POOL("threads.poolsize.min"),
260 * The maximum size of the worker threads pool. This is the pool each listener will use to launch longer running
263 THREADS_MAX_POOL("threads.poolsize.max");
265 private String suffix;
267 private KEYS(String val) {
273 * The prefix to prepend
274 * @return a fully property name that corroponds to what is used in the properties file. Format is PREFIX.KEY
276 public String getFullProp(String prefix) {
277 return String.format("%s.%s", prefix, suffix);
280 public String getPropertySuffix() {