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Extension to configure the Endpoints Framework via Guice.

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/*
 * Copyright 2016 Google Inc. All Rights Reserved.
 *
 * 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.google.api.server.spi.guice;

import com.google.api.server.spi.EndpointsServlet;
import com.google.inject.Inject;
import com.google.inject.Singleton;

/**
 * A subclass of {@link EndpointsServlet} which facilitates Guice injection.
 */
@Singleton
public class GuiceEndpointsServlet extends EndpointsServlet {
  private final ServiceMap services;

  @Inject
  public GuiceEndpointsServlet(ServiceMap services) {
    this.services = Preconditions.checkNotNull(services, "services");
  }

  @Override
  protected  T createService(Class serviceClass) {
    return services.get(serviceClass);
  }
}