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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 "mongo/db/namespace_string.h"
#include "mongo/db/shard_id.h"
#include "mongo/s/database_version.h"
#include "mongo/s/shard_version.h"
#include "mongo/util/concurrency/notification.h"
namespace mongo {
class StaleConfigInfo final : public ErrorExtraInfo {
public:
static constexpr auto code = ErrorCodes::StaleConfig;
enum class OperationType { kRead, kWrite };
StaleConfigInfo(NamespaceString nss,
ShardVersion received,
boost::optional<ShardVersion> wanted,
ShardId shardId,
boost::optional<SharedSemiFuture<void>> criticalSectionSignal = boost::none,
boost::optional<OperationType> duringOperationType = boost::none)
: _nss(std::move(nss)),
_received(received),
_wanted(wanted),
_shardId(shardId),
_criticalSectionSignal(std::move(criticalSectionSignal)),
_duringOperationType{duringOperationType} {}
const auto& getNss() const {
return _nss;
}
const auto& getVersionReceived() const {
return _received;
}
const auto& getVersionWanted() const {
return _wanted;
}
const auto& getShardId() const {
return _shardId;
}
auto getCriticalSectionSignal() const {
return _criticalSectionSignal;
}
const auto& getDuringOperationType() const {
return _duringOperationType;
}
void serialize(BSONObjBuilder* bob) const;
static std::shared_ptr<const ErrorExtraInfo> parse(const BSONObj& obj);
private:
NamespaceString _nss;
ShardVersion _received;
boost::optional<ShardVersion> _wanted;
ShardId _shardId;
// The following fields are not serialized and therefore do not get propagated to the router.
boost::optional<SharedSemiFuture<void>> _criticalSectionSignal;
boost::optional<OperationType> _duringOperationType;
};
// TODO (SERVER-74380): Rename the StaleEpoch code to StaleDownstreamRouter and the info to
// StaleDownstreamRouterInfo
class StaleEpochInfo final : public ErrorExtraInfo {
public:
static constexpr auto code = ErrorCodes::StaleEpoch;
StaleEpochInfo(NamespaceString nss, ShardVersion received, ShardVersion wanted)
: _nss(std::move(nss)), _received(received), _wanted(wanted) {}
// TODO (SERVER-74380): Remove this constructor
StaleEpochInfo(NamespaceString nss) : _nss(std::move(nss)) {}
const auto& getNss() const {
return _nss;
}
const auto& getVersionReceived() const {
return _received;
}
const auto& getVersionWanted() const {
return _wanted;
}
void serialize(BSONObjBuilder* bob) const;
static std::shared_ptr<const ErrorExtraInfo> parse(const BSONObj& obj);
private:
NamespaceString _nss;
// TODO (SERVER-74380): These two fields are boost::optional for backwards compatibility. Either
// both of them are boost::none or both are set.
boost::optional<ShardVersion> _received;
boost::optional<ShardVersion> _wanted;
};
class StaleDbRoutingVersion final : public ErrorExtraInfo {
public:
static constexpr auto code = ErrorCodes::StaleDbVersion;
StaleDbRoutingVersion(
std::string db,
DatabaseVersion received,
boost::optional<DatabaseVersion> wanted,
boost::optional<SharedSemiFuture<void>> criticalSectionSignal = boost::none)
: _db(std::move(db)),
_received(received),
_wanted(wanted),
_criticalSectionSignal(std::move(criticalSectionSignal)) {}
const auto& getDb() const {
return _db;
}
const auto& getVersionReceived() const {
return _received;
}
const auto& getVersionWanted() const {
return _wanted;
}
auto getCriticalSectionSignal() const {
return _criticalSectionSignal;
}
void serialize(BSONObjBuilder* bob) const override;
static std::shared_ptr<const ErrorExtraInfo> parse(const BSONObj&);
private:
std::string _db;
DatabaseVersion _received;
boost::optional<DatabaseVersion> _wanted;
// This signal does not get serialized and therefore does not get propagated to the router
boost::optional<SharedSemiFuture<void>> _criticalSectionSignal;
};
} // namespace mongo
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