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#include "src/buildtool/execution_api/remote/bazel/bazel_response.hpp"
#include "gsl-lite/gsl-lite.hpp"
#include "src/buildtool/execution_api/remote/bazel/bazel_cas_client.hpp"
#include "src/buildtool/logging/logger.hpp"
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() const noexcept -> ArtifactInfos {
ArtifactInfos artifacts{};
auto const& action_result = output_.action_result;
artifacts.reserve(
static_cast<std::size_t>(action_result.output_files().size()));
// collect files and store them
for (auto const& file : action_result.output_files()) {
try {
artifacts.emplace(file.path(),
Artifact::ObjectInfo{
ArtifactDigest{file.digest()},
file.is_executable() ? ObjectType::Executable
: ObjectType::File});
} catch (...) {
return {};
}
}
// 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();
std::size_t 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 {};
}
// 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 {};
}
artifacts.emplace(
action_result.output_directories(pos).path(),
Artifact::ObjectInfo{*root_digest, ObjectType::Tree});
} catch (...) {
return {};
}
++pos;
}
tree_blobs = blob_reader.Next();
}
return artifacts;
}
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};
}
auto BazelResponse::ProcessDirectoryMessage(
bazel_re::Directory const& dir) const noexcept -> std::optional<BazelBlob> {
auto data = dir.SerializeAsString();
auto digest = ArtifactDigest::Create(data);
if (tree_map_ and not tree_map_->HasTree(digest)) {
// cache in local tree map
auto tree = tree_map_->CreateTree();
if (not BazelMsgFactory::ReadObjectInfosFromDirectory(
dir,
[&tree](auto path, auto info) {
return tree.AddInfo(path, info);
}) or
not tree_map_->AddTree(digest, std::move(tree))) {
return std::nullopt;
}
}
return BazelBlob{std::move(digest), std::move(data)};
}
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