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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/buildtool/main/install_cas.hpp"
#include "src/buildtool/compatibility/compatibility.hpp"
#include "src/buildtool/crypto/hash_function.hpp"
#ifndef BOOTSTRAP_BUILD_TOOL
#include "src/buildtool/execution_api/bazel_msg/bazel_msg_factory.hpp"
#endif
#include "src/buildtool/execution_api/remote/config.hpp"
namespace {
[[nodiscard]] auto InvalidSizeString(std::string const& size_str,
std::string const& hash) noexcept -> bool {
static auto const kEmptyHash = HashFunction::ComputeBlobHash("");
return Compatibility::IsCompatible() and // native mode is fine
(size_str == "0" or size_str.empty()) and // not "0" or "" is fine
kEmptyHash.HexString() != hash and // empty hash is fine
RemoteExecutionConfig::RemoteAddress(); // local is fine
}
} // namespace
[[nodiscard]] auto ObjectInfoFromLiberalString(std::string const& s) noexcept
-> Artifact::ObjectInfo {
std::istringstream iss(s);
std::string id{};
std::string size_str{};
std::string type{"f"};
if (iss.peek() == '[') {
(void)iss.get();
}
std::getline(iss, id, ':');
if (not iss.eof()) {
std::getline(iss, size_str, ':');
}
if (not iss.eof()) {
std::getline(iss, type, ']');
}
if (InvalidSizeString(size_str, id)) {
Logger::Log(
LogLevel::Warning,
"{} size in object-id is not supported in compatiblity mode.",
size_str.empty() ? "omitting the" : "zero");
}
auto size = static_cast<std::size_t>(
size_str.empty() ? 0 : std::atol(size_str.c_str()));
auto const& object_type = FromChar(*type.c_str());
return Artifact::ObjectInfo{
.digest = ArtifactDigest{id, size, IsTreeObject(object_type)},
.type = object_type};
}
#ifndef BOOTSTRAP_BUILD_TOOL
auto FetchAndInstallArtifacts(
gsl::not_null<IExecutionApi*> const& api,
gsl::not_null<IExecutionApi*> const& alternative_api,
FetchArguments const& clargs) -> bool {
auto object_info = ObjectInfoFromLiberalString(clargs.object_id);
if (clargs.remember) {
if (not api->RetrieveToCas({object_info}, alternative_api)) {
Logger::Log(LogLevel::Warning,
"Failed to copy artifact {} to local CAS",
object_info.ToString());
}
}
if (clargs.sub_path) {
std::filesystem::path sofar{};
for (auto const& segment : *clargs.sub_path) {
if (object_info.type != ObjectType::Tree) {
Logger::Log(
LogLevel::Warning,
"Non-tree found at path '{}', cannot follow to '{}'",
sofar.string(),
segment.string());
break;
}
auto data = api->RetrieveToMemory(object_info);
if (not data) {
Logger::Log(LogLevel::Error,
"Failed to retrieve artifact {} at path '{}'",
object_info.ToString(),
sofar.string());
return false;
}
if (Compatibility::IsCompatible()) {
auto directory =
BazelMsgFactory::MessageFromString<bazel_re::Directory>(
*data);
if (not directory) {
Logger::Log(
LogLevel::Warning,
"Failed to parse directory message at path '{}'",
sofar.string());
break;
}
std::optional<Artifact::ObjectInfo> new_object_info{};
if (not BazelMsgFactory::ReadObjectInfosFromDirectory(
*directory,
[&new_object_info, &segment](auto path, auto info) {
if (path == segment) {
new_object_info = info;
}
return true;
})) {
Logger::Log(
LogLevel::Warning,
"Failed to process directory message at path '{}'",
sofar.string());
break;
}
if (not new_object_info) {
Logger::Log(LogLevel::Warning,
"Entry {} not found at path '{}'",
segment.string(),
sofar.string());
break;
}
object_info = *new_object_info;
}
else {
auto entries = GitRepo::ReadTreeData(
*data,
HashFunction::ComputeTreeHash(*data).Bytes(),
[](auto const& /*unused*/) { return true; },
/*is_hex_id=*/false);
if (not entries) {
Logger::Log(LogLevel::Warning,
"Failed to parse tree {} at path '{}'",
object_info.ToString(),
sofar.string());
break;
}
std::optional<Artifact::ObjectInfo> new_object_info{};
if (not BazelMsgFactory::ReadObjectInfosFromGitTree(
*entries,
[&new_object_info, &segment](auto path, auto info) {
if (path == segment) {
new_object_info = info;
}
return true;
})) {
Logger::Log(LogLevel::Warning,
"Failed to process tree entries at path '{}'",
sofar.string());
break;
}
if (not new_object_info) {
Logger::Log(LogLevel::Warning,
"Entry {} not found at path '{}'",
segment.string(),
sofar.string());
break;
}
object_info = *new_object_info;
}
sofar /= segment;
}
}
if (clargs.output_path) {
auto output_path = (*clargs.output_path / "").parent_path();
if (FileSystemManager::IsDirectory(output_path)) {
output_path /= object_info.digest.hash();
}
if (not FileSystemManager::CreateDirectory(output_path.parent_path())) {
Logger::Log(LogLevel::Error,
"failed to create parent directory {}.",
output_path.parent_path().string());
return false;
}
if (FileSystemManager::Exists(output_path)) {
if (not FileSystemManager::RemoveFile(output_path)) {
Logger::Log(LogLevel::Error,
"Failed to remote target location {}.",
output_path.string());
return false;
}
}
if (not api->RetrieveToPaths(
{object_info}, {output_path}, alternative_api)) {
Logger::Log(LogLevel::Error, "failed to retrieve artifact.");
return false;
}
Logger::Log(LogLevel::Info,
"artifact {} was installed to {}",
object_info.ToString(),
output_path.string());
}
else { // dump to stdout
if (not api->RetrieveToFds(
{object_info}, {dup(fileno(stdout))}, clargs.raw_tree)) {
Logger::Log(LogLevel::Error, "failed to dump artifact.");
return false;
}
}
return true;
}
#endif
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