/*
    * 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.logging.log4j.flume.appender;
  
  import org.apache.logging.log4j.Logger;
  import org.apache.logging.log4j.core.config.plugins.Plugin;
  import org.apache.logging.log4j.core.config.plugins.PluginAttribute;
  import org.apache.logging.log4j.core.config.plugins.PluginFactory;
  import org.apache.logging.log4j.core.util.Integers;
  import org.apache.logging.log4j.status.StatusLogger;
  
  /**
   * Agent Specification for FlumeAvroAppender.
   */
  @Plugin(name = "Agent", category = "Core", printObject = true)
  public final class Agent {
  
      private static final String DEFAULT_HOST = "localhost";
  
      private static final int DEFAULT_PORT = 35853;
  
      private static final Logger LOGGER = StatusLogger.getLogger();
  
      private final String host;
  
      private final int port;
  
      private Agent(final String host, final int port) {
          this.host = host;
          this.port = port;
      }
  
      /**
       * Retrieve the host name.
       * @return The name of the host.
       */
      public String getHost() {
          return host;
      }
  
      /**
       * Retrieve the port number.
       * @return The port number.
       */
      public int getPort() {
          return port;
      }
  
      @Override
      public String toString() {
          return "host=" + host + " port=" + port;
      }
  
      /**
       * Create an Agent.
       * @param host The host name.
       * @param port The port number.
       * @return The Agent.
       */
      @PluginFactory
      public static Agent createAgent(@PluginAttribute("host") String host,
              @PluginAttribute("port") final String port) {
          if (host == null) {
              host = DEFAULT_HOST;
          }
  
          int portNum;
          try {
              portNum = Integers.parseInt(port, DEFAULT_PORT);
          } catch (final Exception ex) {
              LOGGER.error("Error parsing port number " + port, ex);
              return null;
          }
          return new Agent(host, portNum);
      }
  }