rocksdb/thrift/lib/cpp/util/AsyncClientUtil.h

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/*
* 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.
*/
#ifndef THRIFT_UTIL_ASYNCCLIENTUTIL_H_
#define THRIFT_UTIL_ASYNCCLIENTUTIL_H_ 1
#include "thrift/lib/cpp/async/TAsyncSocket.h"
#include "thrift/lib/cpp/async/TFramedAsyncChannel.h"
#include "thrift/lib/cpp/protocol/TBinaryProtocol.h"
#include "thrift/lib/cpp/transport/TBufferTransports.h"
namespace apache { namespace thrift { namespace util {
/*
* Create an async client from a TSocketAddress
*/
template<typename ClientT,
typename ProtocolFactoryT =
protocol::TBinaryProtocolFactoryT<transport::TBufferBase>,
typename ChannelT = async::TFramedAsyncChannel>
ClientT* createClient(async::TEventBase* eventBase,
const transport::TSocketAddress& address) {
boost::shared_ptr<async::TAsyncTransport> transport(
async::TAsyncSocket::newSocket(eventBase, address));
boost::shared_ptr<async::TAsyncChannel> channel(
ChannelT::newChannel(transport));
ProtocolFactoryT protocolFactory;
return new ClientT(channel, &protocolFactory);
}
/*
* Create an async client from an IP and port
*/
template<typename ClientT,
typename ProtocolFactoryT =
protocol::TBinaryProtocolFactoryT<transport::TBufferBase>,
typename ChannelT = async::TFramedAsyncChannel>
ClientT* createClient(async::TEventBase* eventBase,
const std::string& ip, uint16_t port) {
// Note that we intentionally use setFromIpPort() and not setFromHostPort()
// here. If users want asynchronous operation they almost certainly don't
// want us to perform a blocking DNS lookup operation that may take a long
// time.
transport::TSocketAddress address;
address.setFromIpPort(ip, port);
return createClient<ClientT, ProtocolFactoryT, ChannelT>(
eventBase, address);
}
}}} // apache::thrift::util
#endif // THRIFT_UTIL_ASYNCCLIENTUTIL_H_