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/*
 * Copyright 2021 Google 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
 *
 *     https://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.apphosting.runtime.jetty.delegate;

import com.google.apphosting.runtime.jetty.delegate.api.DelegateExchange;
import com.google.apphosting.runtime.jetty.delegate.internal.DelegateConnection;
import com.google.apphosting.runtime.jetty.delegate.internal.DelegateConnectionFactory;
import com.google.apphosting.runtime.jetty.delegate.internal.DelegateEndpoint;
import java.io.IOException;
import org.eclipse.jetty.server.AbstractConnector;
import org.eclipse.jetty.server.HttpConfiguration;
import org.eclipse.jetty.server.Server;

public class DelegateConnector extends AbstractConnector {
  private final HttpConfiguration _httpConfiguration = new HttpConfiguration();

  public DelegateConnector(Server server) {
    this(server, null);
  }

  public DelegateConnector(Server server, String protocol) {
    super(server, null, null, null, 0, new DelegateConnectionFactory(protocol));
  }

  public HttpConfiguration getHttpConfiguration() {
    return _httpConfiguration;
  }

  public void service(DelegateExchange exchange) throws IOException {
    // TODO: recover existing endpoint and connection from WeakReferenceMap with request as key, or
    // some other way of
    //  doing persistent connection. There is a proposal in the servlet spec to have connection IDs.
    DelegateEndpoint endPoint = new DelegateEndpoint(exchange);
    DelegateConnection connection = new DelegateConnection(this, endPoint);
    connection.handle();
  }

  @Override
  public Object getTransport() {
    return null;
  }

  @Override
  protected void accept(int acceptorID) throws UnsupportedOperationException {
    throw new UnsupportedOperationException("Accept not supported by this Connector");
  }

  public void run(Runnable runnable) {
    getExecutor().execute(runnable);
  }
}