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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 <cstdint>
#include <fmt/format.h>
#include <string>
#include <vector>
#include "mongo/base/string_data.h"
#include "mongo/db/pipeline/aggregate_command_gen.h"
#include "mongo/db/pipeline/external_data_source_option_gen.h"
#include "mongo/util/assert_util.h"
namespace mongo {
/**
* Metadata for external data source.
*/
struct ExternalDataSourceMetadata {
static constexpr auto kUrlProtocolFile = "file://"_sd;
#ifndef _WIN32
static constexpr auto kDefaultFileUrlPrefix = "file:///tmp/"_sd;
#else
static constexpr auto kDefaultFileUrlPrefix = "file:////./pipe/"_sd;
#endif
ExternalDataSourceMetadata(const std::string& url,
StorageTypeEnum storageType,
FileTypeEnum fileType)
: storageType(storageType), fileType(fileType) {
using namespace fmt::literals;
uassert(6968500,
"File url must start with {}"_format(kDefaultFileUrlPrefix),
url.find(kDefaultFileUrlPrefix.toString()) == 0);
uassert(6968501, "Storage type must be 'pipe'", storageType == StorageTypeEnum::pipe);
uassert(6968502, "File type must be 'bson'", fileType == FileTypeEnum::bson);
// Strip off the protocol prefix.
this->url = url.substr(kUrlProtocolFile.size());
}
ExternalDataSourceMetadata(const ExternalDataSourceInfo& dataSourceInfo)
: ExternalDataSourceMetadata(dataSourceInfo.getUrl().toString(),
dataSourceInfo.getStorageType(),
dataSourceInfo.getFileType()) {}
/**
* Url for an external data source
*/
std::string url;
/**
* Storage type for an external data source
*/
StorageTypeEnum storageType;
/**
* File type for an external data source
*/
FileTypeEnum fileType;
};
/**
* Options for virtual collection.
*/
struct VirtualCollectionOptions {
VirtualCollectionOptions() : dataSources() {}
VirtualCollectionOptions(std::vector<ExternalDataSourceMetadata> dataSources)
: dataSources(std::move(dataSources)) {}
VirtualCollectionOptions(const std::vector<ExternalDataSourceInfo>& options) {
for (auto&& dataSource : options) {
dataSources.emplace_back(dataSource);
}
}
/**
* Specification for external data sources.
*/
std::vector<ExternalDataSourceMetadata> dataSources;
};
} // namespace mongo
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