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    1   /*
    2    * Licensed to the Apache Software Foundation (ASF) under one or more
    3    * contributor license agreements. See the NOTICE file distributed with
    4    * this work for additional information regarding copyright ownership.
    5    * The ASF licenses this file to You under the Apache license, Version 2.0
    6    * (the "License"); you may not use this file except in compliance with
    7    * the License. You may obtain a copy of the License at
    8    *
    9    *      http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the license for the specific language governing permissions and
    15   * limitations under the license.
    16   */
    17  package org.apache.logging.log4j.flume.appender;
    18
    19  import org.apache.logging.log4j.Logger;
    20  import org.apache.logging.log4j.core.config.plugins.Plugin;
    21  import org.apache.logging.log4j.core.config.plugins.PluginAttribute;
    22  import org.apache.logging.log4j.core.config.plugins.PluginFactory;
    23  import org.apache.logging.log4j.core.util.Integers;
    24  import org.apache.logging.log4j.status.StatusLogger;
    25
    26  /**
    27   * Agent Specification for FlumeAvroAppender.
    28   */
    29  @Plugin(name = "Agent", category = "Core", printObject = true)
    30  public final class Agent {
    31
    32      private static final String DEFAULT_HOST = "localhost";
    33
    34      private static final int DEFAULT_PORT = 35853;
    35
    36      private static final Logger LOGGER = StatusLogger.getLogger();
    37
    38      private final String host;
    39
    40      private final int port;
    41
    42      private Agent(final String host, final int port) {
    43          this.host = host;
    44          this.port = port;
    45      }
    46
    47      /**
    48       * Retrieve the host name.
    49       * @return The name of the host.
    50       */
    51      public String getHost() {
    52          return host;
    53      }
    54
    55      /**
    56       * Retrieve the port number.
    57       * @return The port number.
    58       */
    59      public int getPort() {
    60          return port;
    61      }
    62
    63      @Override
    64      public String toString() {
    65          return "host=" + host + " port=" + port;
    66      }
    67
    68      /**
    69       * Create an Agent.
    70       * @param host The host name.
    71       * @param port The port number.
    72       * @return The Agent.
    73       */
    74      @PluginFactory
    75      public static Agent createAgent(@PluginAttribute("host") String host,
    76              @PluginAttribute("port") final String port) {
    77          if (host == null) {
    78              host = DEFAULT_HOST;
    79          }
    80
    81          int portNum;
    82          try {
    83              portNum = Integers.parseInt(port, DEFAULT_PORT);
    84          } catch (final Exception ex) {
    85              LOGGER.error("Error parsing port number " + port, ex);
    86              return null;
    87          }
    88          return new Agent(host, portNum);
    89      }
    90  }