67 lines
2.2 KiB
C++
67 lines
2.2 KiB
C++
// Copyright (c) Facebook, Inc. and its affiliates.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#pragma once
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#include <folly/Function.h>
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#include <folly/futures/Future.h>
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#include "rsocket/DuplexConnection.h"
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#include "rsocket/framing/ProtocolVersion.h"
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namespace folly {
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class EventBase;
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}
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namespace rsocket {
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enum class ResumeStatus { NEW_SESSION, RESUMING };
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/**
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* Common interface for a client to create connections and turn them into
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* DuplexConnections.
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*
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* This is primarily used with RSocket::createClient(ConnectionFactory)
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*
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* Built-in implementations can be found in rsocket/transports/, such as
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* rsocket/transports/TcpConnectionFactory.h
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*/
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class ConnectionFactory {
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public:
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ConnectionFactory() = default;
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virtual ~ConnectionFactory() = default;
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ConnectionFactory(const ConnectionFactory&) = delete; // copy
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ConnectionFactory(ConnectionFactory&&) = delete; // move
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ConnectionFactory& operator=(const ConnectionFactory&) = delete; // copy
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ConnectionFactory& operator=(ConnectionFactory&&) = delete; // move
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struct ConnectedDuplexConnection {
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std::unique_ptr<rsocket::DuplexConnection> connection;
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folly::EventBase& eventBase;
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};
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/**
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* Connect to server defined by constructor of the implementing class.
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*
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* Every time this is called a new transport connection is made. This does not
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* however mean it is a physical connection. An implementation could choose to
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* multiplex many RSocket connections on a single transport.
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*
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* Resource creation depends on the particular implementation.
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*/
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virtual folly::Future<ConnectedDuplexConnection> connect(
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ProtocolVersion,
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ResumeStatus resume) = 0;
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};
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} // namespace rsocket
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