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// Copyright 2022 Huawei Cloud Computing Technology Co., Ltd.
//
// 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.
#include "src/other_tools/ops_maps/content_cas_map.hpp"
#include "src/buildtool/crypto/hasher.hpp"
#include "src/buildtool/file_system/file_storage.hpp"
#include "src/buildtool/storage/storage.hpp"
#include "src/other_tools/just_mr/progress_reporting/progress.hpp"
#include "src/other_tools/just_mr/progress_reporting/statistics.hpp"
#include "src/other_tools/utils/curl_easy_handle.hpp"
namespace {
/// \brief Fetches a file from the internet and stores its content in memory.
/// Returns the content.
[[nodiscard]] auto NetworkFetch(std::string const& fetch_url,
JustMR::CAInfoPtr const& ca_info) noexcept
-> std::optional<std::string> {
auto curl_handle =
CurlEasyHandle::Create(ca_info->no_ssl_verify, ca_info->ca_bundle);
if (not curl_handle) {
return std::nullopt;
}
return curl_handle->DownloadToString(fetch_url);
}
template <Hasher::HashType type>
[[nodiscard]] auto GetContentHash(std::string const& data) noexcept
-> std::string {
Hasher hasher{type};
hasher.Update(data);
auto digest = std::move(hasher).Finalize();
return digest.HexString();
}
} // namespace
auto CreateContentCASMap(JustMR::PathsPtr const& just_mr_paths,
JustMR::CAInfoPtr const& ca_info,
std::size_t jobs) -> ContentCASMap {
auto ensure_in_cas = [just_mr_paths, ca_info](auto /*unused*/,
auto setter,
auto logger,
auto /*unused*/,
auto const& key) {
// check if content already in CAS
auto const& cas = Storage::Instance().CAS();
auto digest = ArtifactDigest(key.content, 0, false);
if (cas.BlobPath(digest, /*is_executable=*/false)) {
(*setter)(true);
return;
}
JustMRProgress::Instance().TaskTracker().Start(key.origin);
// add distfile to CAS
auto repo_distfile =
(key.distfile
? key.distfile.value()
: std::filesystem::path(key.fetch_url).filename().string());
JustMR::Utils::AddDistfileToCAS(repo_distfile, just_mr_paths);
// check if content is in CAS now
if (cas.BlobPath(digest, /*is_executable=*/false)) {
JustMRProgress::Instance().TaskTracker().Stop(key.origin);
(*setter)(true);
return;
}
// archive needs fetching
// before any network fetching, check that mandatory fields are provided
if (key.fetch_url.empty()) {
(*logger)("Failed to provide archive fetch url!",
/*fatal=*/true);
return;
}
// now do the actual fetch
auto data = NetworkFetch(key.fetch_url, ca_info);
if (data == std::nullopt) {
(*logger)(fmt::format("Failed to fetch a file with id {} from {}",
key.content,
key.fetch_url),
/*fatal=*/true);
return;
}
// check content wrt checksums
if (key.sha256) {
auto actual_sha256 =
GetContentHash<Hasher::HashType::SHA256>(*data);
if (actual_sha256 != key.sha256.value()) {
(*logger)(
fmt::format("SHA256 mismatch for {}: expected {}, got {}",
key.fetch_url,
key.sha256.value(),
actual_sha256),
/*fatal=*/true);
return;
}
}
if (key.sha512) {
auto actual_sha512 =
GetContentHash<Hasher::HashType::SHA512>(*data);
if (actual_sha512 != key.sha512.value()) {
(*logger)(
fmt::format("SHA512 mismatch for {}: expected {}, got {}",
key.fetch_url,
key.sha512.value(),
actual_sha512),
/*fatal=*/true);
return;
}
}
// add the fetched data to CAS
auto path = JustMR::Utils::AddToCAS(*data);
// check that storing the fetched data succeeded
if (not path) {
(*logger)(fmt::format("Failed to store fetched content from {}",
key.fetch_url),
/*fatal=*/true);
return;
}
// check that the data we stored actually produces the requested digest
if (not cas.BlobPath(digest, /*is_executable=*/false)) {
(*logger)(fmt::format(
"Content {} was not found at given fetch location {}",
key.content,
key.fetch_url),
/*fatal=*/true);
return;
}
JustMRProgress::Instance().TaskTracker().Stop(key.origin);
(*setter)(true);
};
return AsyncMapConsumer<ArchiveContent, bool>(ensure_in_cas, jobs);
}
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