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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 <algorithm>
#include <boost/algorithm/string/predicate.hpp>
#include <boost/optional.hpp>
#include <string>
#include "mongo/base/string_data.h"
#include "mongo/db/tenant_id.h"
#include "mongo/logv2/log_attr.h"
namespace mongo {
/**
* A DatabaseName is a unique name for database.
* It holds a database name and tenant id, if one exists. In a serverless environment, a tenant id
* is expected to exist so that a database can be uniquely identified.
*/
class DatabaseName {
public:
/**
* Constructs an empty DatabaseName.
*/
DatabaseName() : _tenantId(boost::none), _dbString(""), _tenantDbString(boost::none){};
/**
* Constructs a DatabaseName from the given tenantId and database name.
* "dbName" is expected only consist of a db name. It is the caller's responsibility to ensure
* the dbName is a valid db name.
*/
DatabaseName(boost::optional<TenantId> tenantId, StringData dbString) {
_tenantId = tenantId;
_dbString = dbString.toString();
_tenantDbString =
_tenantId ? boost::make_optional(_tenantId->toString() + "_" + _dbString) : boost::none;
}
/**
* Prefer to use the constructor above.
* TODO SERVER-65456 Remove this constructor.
*/
DatabaseName(StringData dbName, boost::optional<TenantId> tenantId = boost::none)
: DatabaseName(tenantId, dbName) {}
static DatabaseName createSystemTenantDbName(StringData dbString);
boost::optional<TenantId> tenantId() const {
return _tenantId;
}
const std::string& db() const {
return _dbString;
}
const std::string& toString() const {
if (_tenantDbString)
return *_tenantDbString;
invariant(!_tenantId);
return _dbString;
}
bool equalCaseInsensitive(const DatabaseName& other) const {
return boost::iequals(toString(), other.toString());
}
/**
* Returns -1, 0, or 1 if 'this' is less, equal, or greater than 'other' in
* lexicographical order.
*/
int compare(const DatabaseName& other) const {
return toString().compare(other.toString());
}
template <typename H>
friend H AbslHashValue(H h, const DatabaseName& obj) {
return H::combine(std::move(h), obj.toString());
}
friend auto logAttrs(const DatabaseName& obj) {
return "databaseName"_attr = obj;
}
private:
boost::optional<TenantId> _tenantId;
std::string _dbString;
boost::optional<std::string> _tenantDbString;
};
inline std::ostream& operator<<(std::ostream& stream, const DatabaseName& tdb) {
return stream << tdb.toString();
}
inline StringBuilder& operator<<(StringBuilder& builder, const DatabaseName& tdb) {
return builder << tdb.toString();
}
inline bool operator==(const DatabaseName& lhs, const DatabaseName& rhs) {
return lhs.compare(rhs) == 0;
}
inline bool operator!=(const DatabaseName& lhs, const DatabaseName& rhs) {
return !(lhs == rhs);
}
inline bool operator<(const DatabaseName& lhs, const DatabaseName& rhs) {
return lhs.compare(rhs) < 0;
}
inline bool operator>(const DatabaseName& lhs, const DatabaseName& rhs) {
return rhs < lhs;
}
inline bool operator<=(const DatabaseName& lhs, const DatabaseName& rhs) {
return !(lhs > rhs);
}
inline bool operator>=(const DatabaseName& lhs, const DatabaseName& rhs) {
return !(lhs < rhs);
}
} // namespace mongo
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