/*
 * 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.accumulo.core.rpc;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.lang.reflect.Method;
import java.net.InetSocketAddress;
import java.net.Socket;
import java.net.SocketAddress;
import java.nio.channels.spi.SelectorProvider;

import org.apache.accumulo.core.util.HostAndPort;
import org.apache.hadoop.net.NetUtils;
import org.apache.thrift.transport.TIOStreamTransport;
import org.apache.thrift.transport.TTransport;

public class TTimeoutTransport {

  private static volatile Method GET_INPUT_STREAM_METHOD = null;

  private static Method getNetUtilsInputStreamMethod() {
    if (null == GET_INPUT_STREAM_METHOD) {
      synchronized (TTimeoutTransport.class) {
        if (null == GET_INPUT_STREAM_METHOD) {
          try {
            GET_INPUT_STREAM_METHOD =
                NetUtils.class.getMethod("getInputStream", Socket.class, Long.TYPE);
          } catch (Exception e) {
            throw new RuntimeException(e);
          }
        }
      }
    }

    return GET_INPUT_STREAM_METHOD;
  }

  private static InputStream getInputStream(Socket socket, long timeout) {
    try {
      return (InputStream) getNetUtilsInputStreamMethod().invoke(null, socket, timeout);
    } catch (Exception e) {
      throw new RuntimeException(e);
    }
  }

  public static TTransport create(HostAndPort addr, long timeoutMillis) throws IOException {
    return create(new InetSocketAddress(addr.getHost(), addr.getPort()), timeoutMillis);
  }

  public static TTransport create(SocketAddress addr, long timeoutMillis) throws IOException {
    Socket socket = null;
    try {
      socket = SelectorProvider.provider().openSocketChannel().socket();
      socket.setSoLinger(false, 0);
      socket.setTcpNoDelay(true);
      socket.connect(addr);
      InputStream input = new BufferedInputStream(getInputStream(socket, timeoutMillis), 1024 * 10);
      OutputStream output =
          new BufferedOutputStream(NetUtils.getOutputStream(socket, timeoutMillis), 1024 * 10);
      return new TIOStreamTransport(input, output);
    } catch (IOException e) {
      try {
        if (socket != null)
          socket.close();
      } catch (IOException ioe) {}

      throw e;
    }
  }
}