br.com.objectos.rio.net.NetworkAdapterFinder Maven / Gradle / Ivy

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/*
 * Copyright 2016 Objectos, Fábrica de Software LTDA.
 *
 * 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 br.com.objectos.rio.net;

import java.util.List;

import br.com.objectos.core.util.ImmutableList;

/**
 * @author [email protected] (Marcio Endo)
 */
abstract class NetworkAdapterFinder {

  private static final NetworkAdapterFinder LINUX = new LinuxNetworkAdapterFinder();
  private static final NetworkAdapterFinder GENERIC = new Generic();

  public static NetworkAdapterFinder getInstance() {
    String osName = System.getProperty("os.name");
    if (osName.equalsIgnoreCase("linux")) {
      return LINUX;
    } else {
      return GENERIC;
    }
  }

  public abstract List list();

  public abstract NetworkAdapter named(String name) throws NetworkAdapterNotFoundException;

  private static class Generic extends NetworkAdapterFinder {

    @Override
    public List list() {
      return ImmutableList.of();
    }

    @Override
    public NetworkAdapter named(String name) throws NetworkAdapterNotFoundException {
      throw new NetworkAdapterNotFoundException(name);
    }

  }

}