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/**
* Copyright (C) 2022-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 <ostream>
#include <string>
#include "mongo/base/string_data.h"
#include "mongo/bson/bsonelement.h"
#include "mongo/bson/bsonmisc.h"
#include "mongo/bson/bsonobjbuilder.h"
#include "mongo/bson/oid.h"
#include "mongo/bson/util/builder.h"
namespace mongo {
/**
* Representation of a tenant identifier.
*/
class TenantId {
public:
static const boost::optional<TenantId>& systemTenantId() {
static StaticImmortal<boost::optional<TenantId>> systemTenantId{};
return *systemTenantId;
}
/**
* Parse a tenantId from a StringData. This method asserts if the tenantId is empty or not in an
* OID format.
* Returns a TenantId object from the parsed string.
*/
static TenantId parseFromString(StringData tenantId);
explicit TenantId(const OID& oid) : _oid(oid) {}
TenantId() = delete;
std::string toString() const {
return _oid.toString();
}
/**
* Returns -1, 0, or 1 if 'this' is less, equal, or greater than 'other' in
* lexicographical order.
*/
int compare(const TenantId& other) const {
return _oid.compare(other._oid);
}
std::size_t hash() const {
return OID::Hasher()(_oid);
}
/**
* Functor compatible with std::hash for std::unordered_{map,set}
*/
struct Hasher {
std::size_t operator()(const TenantId& tenantId) const {
return tenantId.hash();
}
};
/**
* Hash function compatible with absl::Hash for absl::unordered_{map,set}
*/
template <typename H>
friend H AbslHashValue(H h, const TenantId& tenantId) {
return H::combine(std::move(h), tenantId._oid);
}
/**
* Parse tenant id from BSON. The function is used by IDL parsers.
*/
static TenantId parseFromBSON(const BSONElement& elem);
/**
* Serialize tenant id to BSON. These functions are used by IDL parsers.
*/
void serializeToBSON(StringData fieldName, BSONObjBuilder* builder) const;
void serializeToBSON(BSONArrayBuilder* builder) const;
private:
OID _oid;
};
inline bool operator==(const TenantId& lhs, const TenantId& rhs) {
return lhs.compare(rhs) == 0;
}
inline bool operator!=(const TenantId& lhs, const TenantId& rhs) {
return !(lhs == rhs);
}
inline bool operator<(const TenantId& lhs, const TenantId& rhs) {
return lhs.compare(rhs) < 0;
}
inline bool operator>(const TenantId& lhs, const TenantId& rhs) {
return rhs < lhs;
}
inline bool operator<=(const TenantId& lhs, const TenantId& rhs) {
return !(lhs > rhs);
}
inline bool operator>=(const TenantId& lhs, const TenantId& rhs) {
return !(lhs < rhs);
}
inline std::ostream& operator<<(std::ostream& os, const TenantId& tenantId) {
return os << tenantId.toString();
}
template <typename Allocator>
StringBuilderImpl<Allocator>& operator<<(StringBuilderImpl<Allocator>& stream,
const TenantId& tenantId) {
return stream << tenantId.toString();
}
/**
* Supports use of TenantId with the BSON macro:
* BSON("tenant" << tenantId)
*/
template <>
BSONObjBuilder& BSONObjBuilderValueStream::operator<<<TenantId>(TenantId value);
} // namespace mongo
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