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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/authenticate.h"
#include "mongo/db/service_context.h"
#include "mongo/executor/network_connection_hook.h"
#include "mongo/executor/remote_command_request.h"
#include "mongo/executor/remote_command_response.h"
#include "mongo/rpc/protocol.h"
#include "mongo/rpc/unique_message.h"
#include "mongo/transport/baton.h"
#include "mongo/transport/message_compressor_manager.h"
#include "mongo/transport/ssl_connection_context.h"
#include "mongo/transport/transport_layer.h"
#include "mongo/util/future.h"
namespace mongo {
class AsyncDBClient : public std::enable_shared_from_this<AsyncDBClient> {
public:
explicit AsyncDBClient(const HostAndPort& peer,
transport::SessionHandle session,
ServiceContext* svcCtx)
: _peer(std::move(peer)), _session(std::move(session)), _svcCtx(svcCtx) {}
using Handle = std::shared_ptr<AsyncDBClient>;
static Future<Handle> connect(
const HostAndPort& peer,
transport::ConnectSSLMode sslMode,
ServiceContext* context,
transport::ReactorHandle reactor,
Milliseconds timeout,
std::shared_ptr<const transport::SSLConnectionContext> transientSSLContext = nullptr);
Future<executor::RemoteCommandResponse> runCommandRequest(
executor::RemoteCommandRequest request, const BatonHandle& baton = nullptr);
Future<rpc::UniqueReply> runCommand(OpMsgRequest request,
const BatonHandle& baton = nullptr,
bool fireAndForget = false);
Future<executor::RemoteCommandResponse> beginExhaustCommandRequest(
executor::RemoteCommandRequest request, const BatonHandle& baton = nullptr);
Future<executor::RemoteCommandResponse> runExhaustCommand(OpMsgRequest request,
const BatonHandle& baton = nullptr);
Future<executor::RemoteCommandResponse> awaitExhaustCommand(const BatonHandle& baton = nullptr);
Future<void> authenticate(const BSONObj& params);
Future<void> authenticateInternal(
boost::optional<std::string> mechanismHint,
std::shared_ptr<auth::InternalAuthParametersProvider> authProvider);
Future<bool> completeSpeculativeAuth(std::shared_ptr<SaslClientSession> session,
std::string authDB,
BSONObj specAuth,
auth::SpeculativeAuthType speculativeAuthtype);
Future<void> initWireVersion(const std::string& appName, executor::NetworkConnectionHook* hook);
void cancel(const BatonHandle& baton = nullptr);
bool isStillConnected();
void end();
const HostAndPort& remote() const;
const HostAndPort& local() const;
private:
Future<executor::RemoteCommandResponse> _continueReceiveExhaustResponse(
ClockSource::StopWatch stopwatch,
boost::optional<int32_t> msgId,
const BatonHandle& baton = nullptr);
Future<Message> _waitForResponse(boost::optional<int32_t> msgId,
const BatonHandle& baton = nullptr);
Future<void> _call(Message request, int32_t msgId, const BatonHandle& baton = nullptr);
BSONObj _buildIsMasterRequest(const std::string& appName,
executor::NetworkConnectionHook* hook);
void _parseIsMasterResponse(BSONObj request,
const std::unique_ptr<rpc::ReplyInterface>& response);
auth::RunCommandHook _makeAuthRunCommandHook();
const HostAndPort _peer;
transport::SessionHandle _session;
ServiceContext* const _svcCtx;
MessageCompressorManager _compressorManager;
boost::optional<rpc::Protocol> _negotiatedProtocol;
};
} // namespace mongo
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