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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/root_maps/distdir_git_map.hpp"
#include <algorithm>
#include "fmt/core.h"
#include "src/buildtool/execution_api/common/execution_common.hpp"
#include "src/buildtool/file_system/file_root.hpp"
#include "src/buildtool/file_system/file_storage.hpp"
#include "src/buildtool/storage/config.hpp"
#include "src/buildtool/storage/fs_utils.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/ops_maps/content_cas_map.hpp"
#include "src/other_tools/ops_maps/critical_git_op_map.hpp"
#include "src/utils/cpp/tmp_dir.hpp"
namespace {
/// \brief Create links from CAS content to distdir tmp directory
[[nodiscard]] auto LinkToCAS(
std::shared_ptr<std::unordered_map<std::string, std::string>> const&
content_list,
std::filesystem::path const& tmp_dir) noexcept -> bool {
auto const& cas = Storage::Instance().CAS();
return std::all_of(content_list->begin(),
content_list->end(),
[&cas, tmp_dir](auto const& kv) {
auto content_path =
cas.BlobPath(ArtifactDigest(kv.second, 0, false),
/*is_executable=*/false);
if (content_path) {
return FileSystemManager::CreateFileHardlink(
*content_path, // from: cas_path/content_id
tmp_dir / kv.first); // to: tmp_dir/name
}
return false;
});
}
} // namespace
auto CreateDistdirGitMap(
gsl::not_null<ContentCASMap*> const& content_cas_map,
gsl::not_null<ImportToGitMap*> const& import_to_git_map,
gsl::not_null<CriticalGitOpMap*> const& critical_git_op_map,
std::size_t jobs) -> DistdirGitMap {
auto distdir_to_git = [content_cas_map,
import_to_git_map,
critical_git_op_map](auto ts,
auto setter,
auto logger,
auto /* unused */,
auto const& key) {
auto distdir_tree_id_file =
StorageUtils::GetDistdirTreeIDFile(key.content_id);
if (FileSystemManager::Exists(distdir_tree_id_file)) {
// read distdir_tree_id from file tree_id_file
auto distdir_tree_id =
FileSystemManager::ReadFile(distdir_tree_id_file);
if (not distdir_tree_id) {
(*logger)(fmt::format("Failed to read tree id from file {}",
distdir_tree_id_file.string()),
/*fatal=*/true);
return;
}
// ensure Git cache
// define Git operation to be done
GitOpKey op_key = {.params =
{
StorageConfig::GitRoot(), // target_path
"", // git_hash
"", // branch
std::nullopt, // message
true // init_bare
},
.op_type = GitOpType::ENSURE_INIT};
critical_git_op_map->ConsumeAfterKeysReady(
ts,
{std::move(op_key)},
[distdir_tree_id = *distdir_tree_id,
absent = key.absent,
setter,
logger](auto const& values) {
GitOpValue op_result = *values[0];
// check flag
if (not op_result.result) {
(*logger)("Git init failed",
/*fatal=*/true);
return;
}
// subdir is ".", so no need to deal with the Git cache
// set the workspace root
auto root = nlohmann::json::array(
{FileRoot::kGitTreeMarker, distdir_tree_id});
if (not absent) {
root.emplace_back(StorageConfig::GitRoot().string());
}
(*setter)(std::pair(std::move(root), true));
},
[logger, target_path = StorageConfig::GitRoot()](
auto const& msg, bool fatal) {
(*logger)(fmt::format("While running critical Git "
"op ENSURE_INIT for "
"target {}:\n{}",
target_path.string(),
msg),
fatal);
});
}
else {
// fetch the gathered distdir repos into CAS
content_cas_map->ConsumeAfterKeysReady(
ts,
*key.repos_to_fetch,
[distdir_tree_id_file,
content_id = key.content_id,
content_list = key.content_list,
absent = key.absent,
import_to_git_map,
ts,
setter,
logger]([[maybe_unused]] auto const& values) mutable {
// repos are in CAS
// create the links to CAS
auto tmp_dir = StorageUtils::CreateTypedTmpDir("distdir");
if (not tmp_dir) {
(*logger)(fmt::format("Failed to create tmp path for "
"distdir target {}",
content_id),
/*fatal=*/true);
return;
}
// link content from CAS into tmp dir
if (not LinkToCAS(content_list, tmp_dir->GetPath())) {
(*logger)(fmt::format(
"Failed to create links to CAS content!",
content_id),
/*fatal=*/true);
return;
}
// do import to git
CommitInfo c_info{
tmp_dir->GetPath(), "distdir", content_id};
import_to_git_map->ConsumeAfterKeysReady(
ts,
{std::move(c_info)},
[tmp_dir, // keep tmp_dir alive
distdir_tree_id_file,
absent,
setter,
logger](auto const& values) {
// check for errors
if (not values[0]->second) {
(*logger)("Importing to git failed",
/*fatal=*/true);
return;
}
// only the tree is of interest
std::string distdir_tree_id = values[0]->first;
// write to tree id file
if (not StorageUtils::WriteTreeIDFile(
distdir_tree_id_file, distdir_tree_id)) {
(*logger)(
fmt::format(
"Failed to write tree id to file {}",
distdir_tree_id_file.string()),
/*fatal=*/true);
return;
}
// set the workspace root
auto root = nlohmann::json::array(
{FileRoot::kGitTreeMarker, distdir_tree_id});
if (not absent) {
root.emplace_back(
StorageConfig::GitRoot().string());
}
(*setter)(std::pair(std::move(root), false));
},
[logger, target_path = tmp_dir->GetPath()](
auto const& msg, bool fatal) {
(*logger)(fmt::format("While importing target {} "
"to git:\n{}",
target_path.string(),
msg),
fatal);
});
},
[logger, content_id = key.content_id](auto const& msg,
bool fatal) {
(*logger)(fmt::format("While fetching archives for distdir "
"content {}:\n{}",
content_id,
msg),
fatal);
});
}
};
return AsyncMapConsumer<DistdirInfo, std::pair<nlohmann::json, bool>>(
distdir_to_git, jobs);
}
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