/**
 * 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.reef.wake;

import org.apache.reef.tang.ExternalConstructor;
import org.apache.reef.wake.impl.DefaultIdentifierFactory;
import org.apache.reef.wake.remote.impl.SocketRemoteIdentifier;
import org.apache.reef.wake.storage.FileIdentifier;

import javax.inject.Inject;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

public class IdentifierParser implements ExternalConstructor<Identifier> {
  private static final IdentifierFactory factory;

  // TODO: Modify tang to allow this to use a factory pattern.
  static {
    Map<String, Class<? extends Identifier>> map = new ConcurrentHashMap<>();

    map.put("socket", SocketRemoteIdentifier.class);
    map.put("file", FileIdentifier.class);

    factory = new DefaultIdentifierFactory(map);
  }

  final Identifier id;

  @Inject
  IdentifierParser(String s) {
    id = factory.getNewInstance(s);
  }

  @Override
  public Identifier newInstance() {
    return id;
  }

}