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/**
* Copyright (C) 2018-present MongoDB, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the Server Side Public License, version 1,
* as published by MongoDB, Inc.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* Server Side Public License for more details.
*
* You should have received a copy of the Server Side Public License
* along with this program. If not, see
* <http://www.mongodb.com/licensing/server-side-public-license>.
*
* As a special exception, the copyright holders give permission to link the
* code of portions of this program with the OpenSSL library under certain
* conditions as described in each individual source file and distribute
* linked combinations including the program with the OpenSSL library. You
* must comply with the Server Side Public License in all respects for
* all of the code used other than as permitted herein. If you modify file(s)
* with this exception, you may extend this exception to your version of the
* file(s), but you are not obligated to do so. If you do not wish to do so,
* delete this exception statement from your version. If you delete this
* exception statement from all source files in the program, then also delete
* it in the license file.
*/
#pragma once
#include <memory>
#include "mongo/client/async_client.h"
#include "mongo/executor/connection_pool.h"
#include "mongo/executor/network_connection_hook.h"
#include "mongo/executor/network_interface.h"
#include "mongo/util/future.h"
namespace mongo {
namespace executor {
namespace connection_pool_tl {
class TLTypeFactory final : public ConnectionPool::DependentTypeFactoryInterface,
public std::enable_shared_from_this<TLTypeFactory> {
public:
class Type;
TLTypeFactory(transport::ReactorHandle reactor,
transport::TransportLayer* tl,
std::unique_ptr<NetworkConnectionHook> onConnectHook)
: _reactor(std::move(reactor)), _tl(tl), _onConnectHook(std::move(onConnectHook)) {}
std::shared_ptr<ConnectionPool::ConnectionInterface> makeConnection(
const HostAndPort& hostAndPort,
transport::ConnectSSLMode sslMode,
size_t generation) override;
std::shared_ptr<ConnectionPool::TimerInterface> makeTimer() override;
Date_t now() override;
void shutdown() override;
bool inShutdown() const;
void fasten(Type* type);
void release(Type* type);
private:
transport::ReactorHandle _reactor;
transport::TransportLayer* _tl;
std::unique_ptr<NetworkConnectionHook> _onConnectHook;
mutable stdx::mutex _mutex;
AtomicWord<bool> _inShutdown{false};
stdx::unordered_set<Type*> _collars;
};
class TLTypeFactory::Type : public std::enable_shared_from_this<TLTypeFactory::Type> {
friend class TLTypeFactory;
MONGO_DISALLOW_COPYING(Type);
public:
explicit Type(const std::shared_ptr<TLTypeFactory>& factory);
~Type();
void release();
bool inShutdown() const {
return _factory->inShutdown();
}
virtual void kill() = 0;
private:
std::shared_ptr<TLTypeFactory> _factory;
bool _wasReleased = false;
};
class TLTimer final : public ConnectionPool::TimerInterface, public TLTypeFactory::Type {
public:
explicit TLTimer(const std::shared_ptr<TLTypeFactory>& factory,
const transport::ReactorHandle& reactor)
: TLTypeFactory::Type(factory), _reactor(reactor), _timer(_reactor->makeTimer()) {}
~TLTimer() {
// Release must be the first expression of this dtor
release();
}
void kill() override {
cancelTimeout();
}
void setTimeout(Milliseconds timeout, TimeoutCallback cb) override;
void cancelTimeout() override;
Date_t now() override;
private:
transport::ReactorHandle _reactor;
std::shared_ptr<transport::ReactorTimer> _timer;
};
class TLConnection final : public ConnectionPool::ConnectionInterface, public TLTypeFactory::Type {
public:
TLConnection(const std::shared_ptr<TLTypeFactory>& factory,
transport::ReactorHandle reactor,
ServiceContext* serviceContext,
HostAndPort peer,
transport::ConnectSSLMode sslMode,
size_t generation,
NetworkConnectionHook* onConnectHook)
: ConnectionInterface(generation),
TLTypeFactory::Type(factory),
_reactor(reactor),
_serviceContext(serviceContext),
_timer(factory->makeTimer()),
_peer(std::move(peer)),
_sslMode(sslMode),
_onConnectHook(onConnectHook) {}
~TLConnection() {
// Release must be the first expression of this dtor
release();
}
void kill() override {
cancelAsync();
}
const HostAndPort& getHostAndPort() const override;
transport::ConnectSSLMode getSslMode() const override;
bool isHealthy() override;
AsyncDBClient* client();
Date_t now() override;
private:
void setTimeout(Milliseconds timeout, TimeoutCallback cb) override;
void cancelTimeout() override;
void setup(Milliseconds timeout, SetupCallback cb) override;
void refresh(Milliseconds timeout, RefreshCallback cb) override;
void cancelAsync();
private:
transport::ReactorHandle _reactor;
ServiceContext* const _serviceContext;
std::shared_ptr<ConnectionPool::TimerInterface> _timer;
HostAndPort _peer;
transport::ConnectSSLMode _sslMode;
NetworkConnectionHook* const _onConnectHook;
AsyncDBClient::Handle _client;
};
} // namespace connection_pool_asio
} // namespace executor
} // namespace mongo
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