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/**
* Copyright (C) 2023-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.
*/
#include "mongo/client/dbclient_grpc_stream.h"
#include "mongo/base/error_codes.h"
#include "mongo/db/service_context.h"
#include "mongo/logv2/log.h"
#include "mongo/transport/grpc/grpc_transport_layer.h"
#include "mongo/transport/transport_layer_manager.h"
#include "mongo/util/assert_util.h"
#define MONGO_LOGV2_DEFAULT_COMPONENT ::mongo::logv2::LogComponent::kNetwork
namespace mongo {
DBClientGRPCStream::~DBClientGRPCStream() {
if (auto session = _getSession()) {
if (auto status = session->finish(); !status.isOK()) {
LOGV2(8393201,
"RPC associated with DBClientGRPCStream did not terminate successfully",
"clientId"_attr = session->getClientId(),
"remote"_attr = getServerHostAndPort(),
"terminationStatus"_attr = status);
}
}
}
StatusWith<std::shared_ptr<transport::Session>> DBClientGRPCStream::_makeSession(
const HostAndPort& host,
transport::ConnectSSLMode sslMode,
Milliseconds timeout,
boost::optional<TransientSSLParams> transientSSLParams) {
auto tl = dynamic_cast<transport::grpc::GRPCTransportLayer*>(
getGlobalServiceContext()->getTransportLayerManager()->getEgressLayer());
invariant(tl,
"DBClientGRPCStream can only be used with a gRPC transport layer configured as the "
"egress transport layer.");
return tl->connectWithAuthToken(host, std::move(timeout), _authToken);
}
void DBClientGRPCStream::_reconnectSession() {
if (auto oldSession = _getSession()) {
auto status = oldSession->finish();
LOGV2(8393202,
"Trying to re-establish gRPC stream",
"remote"_attr = getServerHostAndPort(),
"priorStreamTerminationStatus"_attr = status);
} else {
LOGV2_DEBUG(8057001,
_logLevel.toInt(),
"Trying to re-establish gRPC stream",
"remote"_attr = getServerHostAndPort());
}
try {
connect(_serverAddress, _applicationName, _transientSSLParams);
} catch (const DBException& e) {
_markFailed(kSetFlag);
LOGV2_DEBUG(8057002,
_logLevel.toInt(),
"gRPC stream re-establishment failed",
"remote"_attr = getServerHostAndPort(),
"error"_attr = e.toStatus());
throw;
}
LOGV2_DEBUG(8057003,
_logLevel.toInt(),
"Successfully re-established gRPC stream",
"remote"_attr = getServerHostAndPort());
}
transport::grpc::EgressSession* DBClientGRPCStream::_getSession() {
if (!_session) {
return nullptr;
}
auto egressSession = dynamic_cast<transport::grpc::EgressSession*>(_session.get());
invariant(egressSession,
"_session must be an instance of GRPCSession:EgressSession in DBClientGRPCStream.");
return egressSession;
}
void DBClientGRPCStream::_killSession() {
transport::grpc::EgressSession* session = _getSession();
if (!session) {
return;
}
session->cancel(Status(ErrorCodes::CallbackCanceled,
"Client is disconnecting, cancelling the outstanding RPC"));
}
int DBClientGRPCStream::getMinWireVersion() {
return DBClientSession::getMinWireVersion();
};
int DBClientGRPCStream::getMaxWireVersion() {
transport::grpc::EgressSession* session = _getSession();
if (!session) {
return DBClientSession::getMaxWireVersion();
}
return session->getClusterMaxWireVersion();
};
} // namespace mongo
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