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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/execution_api/remote/bazel/bazel_response.hpp"
#include "gsl/gsl"
#include "src/buildtool/compatibility/native_support.hpp"
#include "src/buildtool/execution_api/remote/bazel/bazel_cas_client.hpp"
#include "src/buildtool/logging/logger.hpp"
#include "src/utils/cpp/gsl.hpp"
namespace {
auto ProcessDirectoryMessage(bazel_re::Directory const& dir) noexcept
-> std::optional<BazelBlob> {
auto data = dir.SerializeAsString();
auto digest = ArtifactDigest::Create<ObjectType::File>(data);
return BazelBlob{std::move(digest), std::move(data), /*is_exec=*/false};
}
} // namespace
auto BazelResponse::ReadStringBlob(bazel_re::Digest const& id) noexcept
-> std::string {
auto blobs = network_->ReadBlobs({id}).Next();
if (blobs.empty()) {
// TODO(oreiche): logging
return std::string{};
}
return blobs[0].data;
}
auto BazelResponse::Artifacts() noexcept -> ArtifactInfos {
return ArtifactsWithDirSymlinks().first;
}
auto BazelResponse::ArtifactsWithDirSymlinks() noexcept
-> std::pair<ArtifactInfos, DirSymlinks> {
// make sure to populate only once
populated_ = Populate();
if (not populated_) {
return {};
}
return std::pair(artifacts_, dir_symlinks_);
}
auto BazelResponse::Populate() noexcept -> bool {
if (populated_) {
return true;
}
ArtifactInfos artifacts{};
auto const& action_result = output_.action_result;
artifacts.reserve(
static_cast<std::size_t>(action_result.output_files_size()) +
static_cast<std::size_t>(action_result.output_file_symlinks_size()) +
static_cast<std::size_t>(
action_result.output_directory_symlinks_size()) +
static_cast<std::size_t>(action_result.output_directories_size()));
DirSymlinks dir_symlinks{};
dir_symlinks.reserve(static_cast<std::size_t>(
action_result.output_directory_symlinks_size()));
// collect files and store them
for (auto const& file : action_result.output_files()) {
try {
artifacts.emplace(
file.path(),
Artifact::ObjectInfo{.digest = ArtifactDigest{file.digest()},
.type = file.is_executable()
? ObjectType::Executable
: ObjectType::File});
} catch (...) {
return false;
}
}
// collect all symlinks and store them
for (auto const& link : action_result.output_file_symlinks()) {
try {
artifacts.emplace(
link.path(),
Artifact::ObjectInfo{
.digest =
ArtifactDigest::Create<ObjectType::File>(link.target()),
.type = ObjectType::Symlink});
} catch (...) {
return false;
}
}
for (auto const& link : action_result.output_directory_symlinks()) {
try {
artifacts.emplace(
link.path(),
Artifact::ObjectInfo{
.digest =
ArtifactDigest::Create<ObjectType::File>(link.target()),
.type = ObjectType::Symlink});
dir_symlinks.emplace(link.path()); // add it to set
} catch (...) {
return false;
}
}
if (not Compatibility::IsCompatible()) {
// in native mode: just collect and store tree digests
for (auto const& tree : action_result.output_directories()) {
ExpectsAudit(NativeSupport::IsTree(tree.tree_digest().hash()));
try {
artifacts.emplace(
tree.path(),
Artifact::ObjectInfo{
.digest = ArtifactDigest{tree.tree_digest()},
.type = ObjectType::Tree});
} catch (...) {
return false;
}
}
artifacts_ = std::move(artifacts);
dir_symlinks_ = std::move(dir_symlinks);
return true;
}
// obtain tree digests for output directories
std::vector<bazel_re::Digest> tree_digests{};
tree_digests.reserve(
gsl::narrow<std::size_t>(action_result.output_directories_size()));
std::transform(action_result.output_directories().begin(),
action_result.output_directories().end(),
std::back_inserter(tree_digests),
[](auto dir) { return dir.tree_digest(); });
// collect root digests from trees and store them
auto blob_reader = network_->ReadBlobs(tree_digests);
auto tree_blobs = blob_reader.Next();
int pos{};
while (not tree_blobs.empty()) {
for (auto const& tree_blob : tree_blobs) {
try {
auto tree = BazelMsgFactory::MessageFromString<bazel_re::Tree>(
tree_blob.data);
if (not tree) {
return false;
}
// The server does not store the Directory messages it just
// has sent us as part of the Tree message. If we want to be
// able to use the Directories as inputs for actions, we
// have to upload them manually.
auto root_digest = UploadTreeMessageDirectories(*tree);
if (not root_digest) {
return false;
}
artifacts.emplace(
action_result.output_directories(pos).path(),
Artifact::ObjectInfo{.digest = *root_digest,
.type = ObjectType::Tree});
} catch (...) {
return false;
}
++pos;
}
tree_blobs = blob_reader.Next();
}
artifacts_ = std::move(artifacts);
dir_symlinks_ = std::move(dir_symlinks);
return true;
}
auto BazelResponse::UploadTreeMessageDirectories(
bazel_re::Tree const& tree) const -> std::optional<ArtifactDigest> {
BlobContainer dir_blobs{};
auto rootdir_blob = ProcessDirectoryMessage(tree.root());
if (not rootdir_blob) {
return std::nullopt;
}
auto root_digest = rootdir_blob->digest;
dir_blobs.Emplace(std::move(*rootdir_blob));
for (auto const& subdir : tree.children()) {
auto subdir_blob = ProcessDirectoryMessage(subdir);
if (not subdir_blob) {
return std::nullopt;
}
dir_blobs.Emplace(std::move(*subdir_blob));
}
if (not network_->UploadBlobs(dir_blobs)) {
Logger::Log(LogLevel::Error,
"uploading Tree's Directory messages failed");
return std::nullopt;
}
return ArtifactDigest{root_digest};
}
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