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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/remote/target_client.hpp"
#include <utility>
#include "nlohmann/json.hpp"
#include "src/buildtool/common/bazel_types.hpp"
#include "src/buildtool/common/remote/client_common.hpp"
TargetClient::TargetClient(std::string const& server, Port port) noexcept {
stub_ = justbuild::just_serve::Target::NewStub(
CreateChannelWithCredentials(server, port));
}
auto TargetClient::ServeTarget(const TargetCacheKey& key,
const std::string& repo_key)
-> std::optional<std::pair<TargetCacheEntry, Artifact::ObjectInfo>> {
// make sure the blob containing the key is in the remote cas
if (!local_api_->RetrieveToCas({key.Id()}, &*remote_api_)) {
logger_.Emit(LogLevel::Error,
"failed to retrieve to remote cas ObjectInfo {}",
key.Id().ToString());
return std::nullopt;
}
// make sure the repository configuration blob is in the remote cas
if (!local_api_->RetrieveToCas(
{Artifact::ObjectInfo{.digest = ArtifactDigest{repo_key, 0, false},
.type = ObjectType::File}},
&*remote_api_)) {
logger_.Emit(LogLevel::Error,
"failed to retrieve to remote cas blob {}",
repo_key);
return std::nullopt;
}
// add target cache key to request
bazel_re::Digest key_dgst{key.Id().digest};
justbuild::just_serve::ServeTargetRequest request{};
*(request.mutable_target_cache_key_id()) = std::move(key_dgst);
// add execution properties to request
for (auto const& [k, v] : RemoteExecutionConfig::PlatformProperties()) {
auto* prop = request.add_execution_properties();
prop->set_name(k);
prop->set_value(v);
}
// add dispatch information to request, while ensuring blob is uploaded to
// remote cas
auto dispatch_list = nlohmann::json::array();
for (auto const& [props, endpoint] :
RemoteExecutionConfig::DispatchList()) {
auto entry = nlohmann::json::array();
entry.push_back(nlohmann::json(props));
entry.push_back(endpoint.ToJson());
dispatch_list.push_back(entry);
}
auto dispatch_dgst =
Storage::Instance().CAS().StoreBlob(dispatch_list.dump(2));
if (not dispatch_dgst) {
logger_.Emit(LogLevel::Error,
"failed to store blob {} to local cas",
dispatch_list.dump(2));
return std::nullopt;
}
auto const& dispatch_info = Artifact::ObjectInfo{
.digest = ArtifactDigest{*dispatch_dgst}, .type = ObjectType::File};
if (!local_api_->RetrieveToCas({dispatch_info}, &*remote_api_)) {
logger_.Emit(LogLevel::Error,
"failed to upload blob {} to remote cas",
dispatch_info.ToString());
return std::nullopt;
}
*(request.mutable_dispatch_info()) = std::move(*dispatch_dgst);
// call rpc
grpc::ClientContext context;
justbuild::just_serve::ServeTargetResponse response;
auto const& status = stub_->ServeTarget(&context, request, &response);
if (!status.ok()) {
LogStatus(&logger_, LogLevel::Error, status);
return std::nullopt;
}
auto const& target_value_dgst = ArtifactDigest{response.target_value()};
auto const& obj_info = Artifact::ObjectInfo{.digest = target_value_dgst,
.type = ObjectType::File};
if (!local_api_->IsAvailable(target_value_dgst)) {
if (!remote_api_->RetrieveToCas({obj_info}, &*local_api_)) {
logger_.Emit(LogLevel::Error,
"failed to retrieve blob {} from remote cas",
obj_info.ToString());
return std::nullopt;
}
}
auto const& target_value_str = local_api_->RetrieveToMemory(obj_info);
if (!target_value_str) {
logger_.Emit(LogLevel::Error,
"failed to retrieve blob {} from local cas",
obj_info.ToString());
return std::nullopt;
}
auto const& result =
TargetCacheEntry::FromJson(nlohmann::json::parse(*target_value_str));
return std::make_pair(result, obj_info);
}
auto TargetClient::ServeTargetVariables(std::string const& target_root_id,
std::string const& target_file,
std::string const& target)
-> std::optional<std::vector<std::string>> {
justbuild::just_serve::ServeTargetVariablesRequest request{};
request.set_root_tree(target_root_id);
request.set_target_file(target_file);
request.set_target(target);
grpc::ClientContext context;
justbuild::just_serve::ServeTargetVariablesResponse response;
grpc::Status status =
stub_->ServeTargetVariables(&context, request, &response);
if (not status.ok()) {
LogStatus(&logger_, LogLevel::Error, status);
return std::nullopt;
}
auto size = response.flexible_config_size();
if (size == 0) {
return std::vector<std::string>();
}
std::vector<std::string> res{};
res.reserve(size);
for (auto const& var : response.flexible_config()) {
res.emplace_back(var);
}
return res;
}
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