TCPForwarderBuilder.java

/**
 * Copyright 2014 Comcast Cable Communications Management, LLC
 *
 * Licensed 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 com.comcast.viper.flume2storm.utility.forwarder;

/**
 * Builder class for the {@link TCPForwarder}
 */
public class TCPForwarderBuilder extends TCPForwarderConfig {
  /**
   * Constructs a new {@link TCPForwarderBuilder}
   */
  public TCPForwarderBuilder() {
    super();
  }

  /**
   * Validates that the builder is configured appropriately
   */
  public void validate() {
    assert inputPort != null : "TCPForwarder input port not specified";
    assert outputServer != null : "TCPForwarder output server not specified";
    assert outputPort != null : "TCPForwarder output port not specified";
    // TODO check more: not the same port with localhost, port value in
    // range, ...
  }

  /**
   * @return A newly built {@link TCPForwarder}
   */
  public TCPForwarder build() {
    validate();
    return new TCPForwarderImpl(this);
  }
}