/**
* 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.net.SocketTimeoutException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.net.unix.DomainSocket;
@InterfaceAudience.Private
public class DomainPeerServer implements PeerServer {
static final Log LOG = LogFactory.getLog(DomainPeerServer.class);
private final DomainSocket sock;
DomainPeerServer(DomainSocket sock) {
this.sock = sock;
}
public DomainPeerServer(String path, int port)
throws IOException {
this(DomainSocket.bindAndListen(DomainSocket.getEffectivePath(path, port)));
}
public String getBindPath() {
return sock.getPath();
}
@Override
public void setReceiveBufferSize(int size) throws IOException {
sock.setAttribute(DomainSocket.RECEIVE_BUFFER_SIZE, size);
}
@Override
public Peer accept() throws IOException, SocketTimeoutException {
DomainSocket connSock = sock.accept();
Peer peer = null;
boolean success = false;
try {
peer = new DomainPeer(connSock);
success = true;
return peer;
} finally {
if (!success) {
if (peer != null) peer.close();
connSock.close();
}
}
}
@Override
public String getListeningString() {
return "unix:" + sock.getPath();
}
@Override
public void close() throws IOException {
try {
sock.close();
} catch (IOException e) {
LOG.error("error closing DomainPeerServer: ", e);
}
}
@Override
public String toString() {
return "DomainPeerServer(" + getListeningString() + ")";
}
}