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// Copyright 2009-present MongoDB, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#pragma once
#include "../microbench.hpp"
#include <algorithm>
#include <fstream>
#include <memory>
#include <bsoncxx/stdx/optional.hpp>
#include <mongocxx/client.hpp>
#include <mongocxx/gridfs/bucket.hpp>
#include <mongocxx/instance.hpp>
#include <mongocxx/uri.hpp>
namespace benchmark {
using bsoncxx::builder::basic::kvp;
using bsoncxx::builder::basic::make_document;
class gridfs_download : public microbench {
public:
// The task size comes from the Driver Perfomance Benchmarking Reference Doc.
gridfs_download(std::string file_name)
: microbench{"TestGridFsDownload",
52.43,
std::set<benchmark_type>{benchmark_type::multi_bench,
benchmark_type::read_bench}},
_conn{mongocxx::uri{}},
_file_name{std::move(file_name)} {}
void setup();
void teardown();
protected:
void task();
private:
mongocxx::client _conn;
mongocxx::gridfs::bucket _bucket;
bsoncxx::stdx::optional<bsoncxx::types::bson_value::view> _id;
std::string _file_name;
};
void gridfs_download::setup() {
mongocxx::database db = _conn["perftest"];
db.drop();
std::ifstream stream{_file_name};
_bucket = db.gridfs_bucket();
auto result = _bucket.upload_from_stream(_file_name, &stream);
_id = result.id();
}
void gridfs_download::teardown() {
_conn["perftest"].drop();
}
void gridfs_download::task() {
auto downloader = _bucket.open_download_stream(_id.value());
auto file_length = downloader.file_length();
auto buffer_size = std::min(file_length, static_cast<std::int64_t>(downloader.chunk_size()));
auto buffer = std::make_unique<std::uint8_t[]>(static_cast<std::size_t>(buffer_size));
while ([[maybe_unused]] auto length_read =
downloader.read(buffer.get(), static_cast<std::size_t>(buffer_size))) {
}
}
} // namespace benchmark
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