/*
* 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.facebook.presto.hive;
import com.facebook.presto.hive.shaded.org.apache.thrift.transport.TSocket;
import com.facebook.presto.hive.shaded.org.apache.thrift.transport.TTransport;
import com.facebook.presto.hive.shaded.org.apache.thrift.transport.TTransportException;
import com.google.common.net.HostAndPort;
import com.google.common.primitives.Ints;
import com.google.inject.Inject;
import io.airlift.units.Duration;
import javax.annotation.Nullable;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.Proxy;
import java.net.Socket;
import java.net.SocketAddress;
import static com.google.common.base.Preconditions.checkNotNull;
public class HiveMetastoreClientFactory
{
private final HostAndPort socksProxy;
private final Duration timeout;
public HiveMetastoreClientFactory(@Nullable HostAndPort socksProxy, Duration timeout)
{
this.socksProxy = socksProxy;
this.timeout = checkNotNull(timeout, "timeout is null");
}
@Inject
public HiveMetastoreClientFactory(HiveClientConfig config)
{
this(config.getMetastoreSocksProxy(), config.getMetastoreTimeout());
}
@SuppressWarnings("SocketOpenedButNotSafelyClosed")
public HiveMetastoreClient create(String host, int port)
throws TTransportException
{
TTransport transport;
if (socksProxy == null) {
transport = new TTransportWrapper(new TSocket(host, port, (int) timeout.toMillis()), host);
transport.open();
}
else {
SocketAddress address = InetSocketAddress.createUnresolved(socksProxy.getHostText(), socksProxy.getPort());
Socket socks = new Socket(new Proxy(Proxy.Type.SOCKS, address));
try {
socks.connect(InetSocketAddress.createUnresolved(host, port), (int) timeout.toMillis());
socks.setSoTimeout(Ints.checkedCast(timeout.toMillis()));
}
catch (IOException e) {
throw rewriteException(new TTransportException(e), host);
}
try {
transport = new TTransportWrapper(new TSocket(socks), host);
}
catch (TTransportException e) {
throw rewriteException(e, host);
}
}
return new HiveMetastoreClient(transport);
}
private static TTransportException rewriteException(TTransportException e, String host)
{
return new TTransportException(e.getType(), String.format("%s: %s", host, e.getMessage()), e.getCause());
}
private static class TTransportWrapper
extends TTransport
{
private final TTransport transport;
private final String host;
TTransportWrapper(TTransport transport, String host)
{
this.transport = transport;
this.host = host;
}
@Override
public boolean isOpen()
{
return transport.isOpen();
}
@Override
public boolean peek()
{
return transport.peek();
}
@Override
public byte[] getBuffer()
{
return transport.getBuffer();
}
@Override
public int getBufferPosition()
{
return transport.getBufferPosition();
}
@Override
public int getBytesRemainingInBuffer()
{
return transport.getBytesRemainingInBuffer();
}
@Override
public void consumeBuffer(int len)
{
transport.consumeBuffer(len);
}
@Override
public void close()
{
transport.close();
}
@Override
public void open()
throws TTransportException
{
try {
transport.open();
}
catch (TTransportException e) {
throw rewriteException(e, host);
}
}
@Override
public int readAll(byte[] bytes, int off, int len)
throws TTransportException
{
try {
return transport.readAll(bytes, off, len);
}
catch (TTransportException e) {
throw rewriteException(e, host);
}
}
@Override
public int read(byte[] bytes, int off, int len)
throws TTransportException
{
try {
return transport.read(bytes, off, len);
}
catch (TTransportException e) {
throw rewriteException(e, host);
}
}
@Override
public void write(byte[] bytes)
throws TTransportException
{
try {
transport.write(bytes);
}
catch (TTransportException e) {
throw rewriteException(e, host);
}
}
@Override
public void write(byte[] bytes, int off, int len)
throws TTransportException
{
try {
transport.write(bytes, off, len);
}
catch (TTransportException e) {
throw rewriteException(e, host);
}
}
@Override
public void flush()
throws TTransportException
{
try {
transport.flush();
}
catch (TTransportException e) {
throw rewriteException(e, host);
}
}
}
}