content: /*
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements. See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.
   * The ASF licenses this file to You under the Apache License, Version 2.0
   * (the "License"); you may not use this file except in compliance with
   * the License. You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package org.apache.activemq.artemis.jms.client;
  
  import java.security.AccessController;
  import java.security.PrivilegedAction;
  
  /**
   * This class will provide default properties for constructors
   * <table border='1'>
   * <caption>Default properties</caption>
   * <tr> <td>Name</td> <td>Default Value</td></tr>
   * <tr> <td>AMQ_HOST or org.apache.activemq.AMQ_HOST</td> <td>localhost</td></tr>
   * <tr><td>AMQ_PORT or org.apache.activemq.AMQ_PORT</td> <td>61616</td></tr>
   * <tr><td>BROKER_BIND_URL or org.apache.activemq.BROKER_BIND_URL</td> <td>tcp://${AMQ_HOST}:${AMQ_PORT}</td></tr>
   * <tr><td>AMQ_USER or org.apache.activemq.AMQ_USER</td> <td>null</td></tr>
   * <tr><td>AMQ_PASSWORD or org.apache.activemq.AMQ_PASSWORD</td> <td>null</td></tr>
   * </table>
   */
  public class DefaultConnectionProperties {
  
     public static final String AMQ_HOST = "AMQ_HOST";
     public static final String AMQ_PORT = "AMQ_PORT";
     public static final String AMQ_USER = "AMQ_USER";
     public static final String AMQ_PASSWORD = "AMQ_PASSWORD";
     public static final String AMQ_PASSWORD_CODEC = "AMQ_PASSWORD_CODEC";
     public static final String BROKER_BIND_URL = "BROKER_BIND_URL";
     public static final String PREFIX = "org.apache.activemq.";
  
     public static String DEFAULT_BROKER_HOST;
     public static int DEFAULT_BROKER_PORT;
     public static String DEFAULT_BROKER_BIND_URL;
     public static String DEFAULT_BROKER_URL;
     public static String DEFAULT_USER;
     public static String DEFAULT_PASSWORD;
     public static String DEFAULT_PASSWORD_CODEC;
  
     static String getProperty(final String defaultValue, final String... propertyNames) {
        return AccessController.doPrivileged((PrivilegedAction<String>) () -> {
           for (String name : propertyNames) {
              String property = System.getProperty(name);
              if (property != null && !property.isEmpty()) {
                 return property;
              }
           }
           return defaultValue;
        });
     }
  
     static {
        initialize();
     }
  
     public static void initialize() {
        String host = getProperty("localhost", AMQ_HOST, PREFIX + AMQ_HOST);
        String port = getProperty("61616", AMQ_PORT, PREFIX + AMQ_PORT);
        DEFAULT_BROKER_HOST = host;
        DEFAULT_BROKER_PORT = Integer.parseInt(port);
        String url = getProperty("tcp://" + host + ":" + port, PREFIX + BROKER_BIND_URL, BROKER_BIND_URL);
        DEFAULT_USER = getProperty(null, AMQ_USER, PREFIX + AMQ_USER);
        DEFAULT_PASSWORD = getProperty(null, AMQ_PASSWORD, PREFIX + AMQ_PASSWORD);
        DEFAULT_PASSWORD_CODEC = getProperty(null, AMQ_PASSWORD_CODEC, PREFIX + AMQ_PASSWORD_CODEC);
  
        DEFAULT_BROKER_BIND_URL = url;
        // TODO: improve this once we implement failover:// as ActiveMQ5 does
        DEFAULT_BROKER_URL = DEFAULT_BROKER_BIND_URL;
     }
  }
  