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// Copyright 2023 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/serve_api/serve_service/source_tree.hpp"
#include "fmt/core.h"
#include "src/buildtool/common/artifact.hpp"
#include "src/buildtool/common/artifact_digest.hpp"
#include "src/buildtool/execution_api/bazel_msg/bazel_common.hpp"
#include "src/buildtool/execution_api/local/local_api.hpp"
#include "src/buildtool/execution_api/remote/bazel/bazel_api.hpp"
#include "src/buildtool/file_system/git_repo.hpp"
#include "src/buildtool/serve_api/remote/config.hpp"
#include "src/buildtool/storage/config.hpp"
auto SourceTreeService::GetSubtreeFromCommit(
std::filesystem::path const& repo_path,
std::string const& commit,
std::string const& subdir,
std::shared_ptr<Logger> const& logger) -> std::optional<std::string> {
if (auto git_cas = GitCAS::Open(repo_path)) {
if (auto repo = GitRepo::Open(git_cas)) {
// wrap logger for GitRepo call
auto wrapped_logger = std::make_shared<GitRepo::anon_logger_t>(
[logger, repo_path, commit](auto const& msg, bool fatal) {
if (fatal) {
auto err = fmt::format(
"ServeCommitTree: While retrieving subtree of "
"commit {} from repository {}:\n{}",
commit,
repo_path.string(),
msg);
logger->Emit(LogLevel::Trace, err);
}
});
if (auto tree_id = repo->GetSubtreeFromCommit(
commit, subdir, wrapped_logger)) {
return tree_id;
}
}
}
return std::nullopt;
}
auto SourceTreeService::ServeCommitTree(
::grpc::ServerContext* /* context */,
const ::justbuild::just_serve::ServeCommitTreeRequest* request,
::justbuild::just_serve::ServeCommitTreeResponse* response)
-> ::grpc::Status {
using ServeCommitTreeResponse =
::justbuild::just_serve::ServeCommitTreeResponse;
auto const& commit{request->commit()};
auto const& subdir{request->subdir()};
// try in local build root Git cache
if (auto tree_id = GetSubtreeFromCommit(
StorageConfig::GitRoot(), commit, subdir, logger_)) {
if (request->sync_tree()) {
// sync tree with remote CAS
auto digest = ArtifactDigest{*tree_id, 0, /*is_tree=*/true};
auto repo = RepositoryConfig{};
if (not repo.SetGitCAS(StorageConfig::GitRoot())) {
auto str = fmt::format("Failed to SetGitCAS at {}",
StorageConfig::GitRoot().string());
logger_->Emit(LogLevel::Debug, str);
response->set_status(ServeCommitTreeResponse::INTERNAL_ERROR);
return ::grpc::Status::OK;
}
auto git_api = GitApi{&repo};
if (not git_api.RetrieveToCas(
{Artifact::ObjectInfo{.digest = digest,
.type = ObjectType::Tree}},
&(*remote_api_))) {
auto str = fmt::format("Failed to sync tree {}", *tree_id);
logger_->Emit(LogLevel::Debug, str);
*(response->mutable_tree()) = std::move(*tree_id);
response->set_status(ServeCommitTreeResponse::SYNC_ERROR);
return ::grpc::Status::OK;
}
}
// set response
*(response->mutable_tree()) = std::move(*tree_id);
response->set_status(ServeCommitTreeResponse::OK);
return ::grpc::Status::OK;
}
// try given extra repositories, in order
for (auto const& path : RemoteServeConfig::KnownRepositories()) {
if (auto tree_id =
GetSubtreeFromCommit(path, commit, subdir, logger_)) {
if (request->sync_tree()) {
// sync tree with remote CAS
auto digest = ArtifactDigest{*tree_id, 0, /*is_tree=*/true};
auto repo = RepositoryConfig{};
if (not repo.SetGitCAS(path)) {
auto str =
fmt::format("Failed to SetGitCAS at {}", path.string());
logger_->Emit(LogLevel::Debug, str);
response->set_status(
ServeCommitTreeResponse::INTERNAL_ERROR);
return ::grpc::Status::OK;
}
auto git_api = GitApi{&repo};
if (not git_api.RetrieveToCas(
{Artifact::ObjectInfo{.digest = digest,
.type = ObjectType::Tree}},
&(*remote_api_))) {
auto str = fmt::format("Failed to sync tree {}", *tree_id);
logger_->Emit(LogLevel::Debug, str);
*(response->mutable_tree()) = std::move(*tree_id);
response->set_status(ServeCommitTreeResponse::SYNC_ERROR);
}
}
// set response
*(response->mutable_tree()) = std::move(*tree_id);
response->set_status(ServeCommitTreeResponse::OK);
return ::grpc::Status::OK;
}
}
// commit not found
response->set_status(ServeCommitTreeResponse::NOT_FOUND);
return ::grpc::Status::OK;
}
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