| /** |
| * 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.hadoop.hdfs.net; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.net.Socket; |
| import java.net.SocketAddress; |
| import java.nio.channels.ReadableByteChannel; |
| |
| import org.apache.hadoop.net.SocketInputStream; |
| import org.apache.hadoop.net.SocketOutputStream; |
| import org.apache.hadoop.net.unix.DomainSocket; |
| |
| /** |
| * Represents a peer that we communicate with by using non-blocking I/O |
| * on a Socket. |
| */ |
| public class NioInetPeer implements Peer { |
| private final Socket socket; |
| |
| /** |
| * An InputStream which simulates blocking I/O with timeouts using NIO. |
| */ |
| private final SocketInputStream in; |
| |
| /** |
| * An OutputStream which simulates blocking I/O with timeouts using NIO. |
| */ |
| private final SocketOutputStream out; |
| |
| private final boolean isLocal; |
| |
| public NioInetPeer(Socket socket) throws IOException { |
| this.socket = socket; |
| this.in = new SocketInputStream(socket.getChannel(), 0); |
| this.out = new SocketOutputStream(socket.getChannel(), 0); |
| this.isLocal = socket.getInetAddress().equals(socket.getLocalAddress()); |
| } |
| |
| @Override |
| public ReadableByteChannel getInputStreamChannel() { |
| return in; |
| } |
| |
| @Override |
| public void setReadTimeout(int timeoutMs) throws IOException { |
| in.setTimeout(timeoutMs); |
| } |
| |
| @Override |
| public int getReceiveBufferSize() throws IOException { |
| return socket.getReceiveBufferSize(); |
| } |
| |
| @Override |
| public boolean getTcpNoDelay() throws IOException { |
| return socket.getTcpNoDelay(); |
| } |
| |
| @Override |
| public void setWriteTimeout(int timeoutMs) throws IOException { |
| out.setTimeout(timeoutMs); |
| } |
| |
| @Override |
| public boolean isClosed() { |
| return socket.isClosed(); |
| } |
| |
| @Override |
| public void close() throws IOException { |
| // We always close the outermost streams-- in this case, 'in' and 'out' |
| // Closing either one of these will also close the Socket. |
| try { |
| in.close(); |
| } finally { |
| out.close(); |
| } |
| } |
| |
| @Override |
| public String getRemoteAddressString() { |
| SocketAddress address = socket.getRemoteSocketAddress(); |
| return address == null ? null : address.toString(); |
| } |
| |
| @Override |
| public String getLocalAddressString() { |
| return socket.getLocalSocketAddress().toString(); |
| } |
| |
| @Override |
| public InputStream getInputStream() throws IOException { |
| return in; |
| } |
| |
| @Override |
| public OutputStream getOutputStream() throws IOException { |
| return out; |
| } |
| |
| @Override |
| public boolean isLocal() { |
| return isLocal; |
| } |
| |
| @Override |
| public String toString() { |
| return "NioInetPeer(" + socket.toString() + ")"; |
| } |
| |
| @Override |
| public DomainSocket getDomainSocket() { |
| return null; |
| } |
| |
| @Override |
| public boolean hasSecureChannel() { |
| return false; |
| } |
| } |