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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/main/build_utils.hpp"
#include <cmath>
#include <iterator>
#include <memory>
#include <unordered_set>
#include "fmt/core.h"
#include "src/buildtool/build_engine/expression/expression.hpp"
#include "src/buildtool/build_engine/expression/expression_ptr.hpp"
#ifndef BOOTSTRAP_BUILD_TOOL
#include "src/buildtool/execution_api/common/execution_api.hpp"
#include "src/buildtool/logging/log_level.hpp"
#include "src/buildtool/multithreading/async_map_utils.hpp"
#include "src/buildtool/multithreading/task_system.hpp"
#include "src/buildtool/storage/target_cache_entry.hpp"
#endif // BOOTSTRAP_BUILD_TOOL
auto ReadOutputArtifacts(AnalysedTargetPtr const& target)
-> std::pair<std::map<std::string, ArtifactDescription>,
std::map<std::string, ArtifactDescription>> {
std::map<std::string, ArtifactDescription> artifacts{};
std::map<std::string, ArtifactDescription> runfiles{};
for (auto const& [path, artifact] : target->Artifacts()->Map()) {
artifacts.emplace(path, artifact->Artifact());
}
for (auto const& [path, artifact] : target->RunFiles()->Map()) {
if (not artifacts.contains(path)) {
runfiles.emplace(path, artifact->Artifact());
}
}
return {artifacts, runfiles};
}
auto CollectNonKnownArtifacts(
std::unordered_map<TargetCacheKey, AnalysedTargetPtr> const& cache_targets)
-> std::vector<ArtifactDescription> {
auto cache_artifacts = std::unordered_set<ArtifactDescription>{};
for (auto const& [_, target] : cache_targets) {
auto artifacts = target->ContainedNonKnownArtifacts();
cache_artifacts.insert(std::make_move_iterator(artifacts.begin()),
std::make_move_iterator(artifacts.end()));
}
return {std::make_move_iterator(cache_artifacts.begin()),
std::make_move_iterator(cache_artifacts.end())};
}
auto ToTargetCacheWriteStrategy(std::string const& strategy)
-> std::optional<TargetCacheWriteStrategy> {
if (strategy == "disable") {
return TargetCacheWriteStrategy::Disable;
}
if (strategy == "sync") {
return TargetCacheWriteStrategy::Sync;
}
if (strategy == "split") {
return TargetCacheWriteStrategy::Split;
}
return std::nullopt;
}
#ifndef BOOTSTRAP_BUILD_TOOL
auto CreateTargetCacheWriterMap(
std::unordered_map<TargetCacheKey, AnalysedTargetPtr> const& cache_targets,
std::unordered_map<ArtifactDescription, Artifact::ObjectInfo> const&
extra_infos,
std::size_t jobs,
gsl::not_null<ApiBundle const*> const& apis,
TargetCacheWriteStrategy strategy,
TargetCache<true> const& tc) -> TargetCacheWriterMap {
auto write_tc_entry =
[cache_targets, extra_infos, jobs, apis, strategy, tc](
auto /*ts*/,
auto setter,
auto logger,
auto subcaller,
auto const& key) {
// get the TaretCacheKey corresponding to this Id
TargetCacheKey tc_key{key};
// check if entry actually needs storing
auto const tc_key_it = cache_targets.find(tc_key);
if (tc_key_it == cache_targets.end()) {
if (tc.Read(tc_key)) {
// entry already in target-cache, so nothing to be done
(*setter)(nullptr);
return;
}
(*logger)(fmt::format("Export target {} not analysed locally; "
"not caching anything depending on it",
key.ToString()),
true);
return;
}
auto entry = TargetCacheEntry::FromTarget(
apis->remote->GetHashType(), tc_key_it->second, extra_infos);
if (not entry) {
(*logger)(
fmt::format("Failed creating target cache entry for key {}",
key.ToString()),
/*fatal=*/true);
return;
}
// only store current entry once all implied targets are stored
if (auto implied_targets = entry->ToImpliedIds(key.digest.hash())) {
(*subcaller)(
*implied_targets,
[tc_key, entry, jobs, apis, strategy, tc, setter, logger](
[[maybe_unused]] auto const& values) {
// create parallel artifacts downloader
auto downloader = [apis, &jobs, strategy](auto infos) {
return apis->remote->ParallelRetrieveToCas(
infos,
*apis->local,
jobs,
strategy == TargetCacheWriteStrategy::Split);
};
if (not tc.Store(tc_key, *entry, downloader)) {
(*logger)(fmt::format("Failed writing target cache "
"entry for {}",
tc_key.Id().ToString()),
/*fatal=*/true);
return;
}
// success!
(*setter)(nullptr);
},
logger);
}
else {
(*logger)(fmt::format("Failed retrieving implied targets for "
"key {}",
key.ToString()),
/*fatal=*/true);
}
};
return AsyncMapConsumer<Artifact::ObjectInfo, std::nullptr_t>(
write_tc_entry, jobs);
}
void WriteTargetCacheEntries(
std::unordered_map<TargetCacheKey, AnalysedTargetPtr> const& cache_targets,
std::unordered_map<ArtifactDescription, Artifact::ObjectInfo> const&
extra_infos,
std::size_t jobs,
ApiBundle const& apis,
TargetCacheWriteStrategy strategy,
TargetCache<true> const& tc,
Logger const* logger,
LogLevel log_level) {
std::size_t sqrt_jobs = std::lround(std::ceil(std::sqrt(jobs)));
if (strategy == TargetCacheWriteStrategy::Disable) {
return;
}
if (not cache_targets.empty()) {
Logger::Log(logger,
LogLevel::Info,
"Backing up artifacts of {} export targets",
cache_targets.size());
}
// set up writer map
auto tc_writer_map = CreateTargetCacheWriterMap(
cache_targets, extra_infos, sqrt_jobs, &apis, strategy, tc);
std::vector<Artifact::ObjectInfo> cache_targets_ids;
cache_targets_ids.reserve(cache_targets.size());
for (auto const& [k, _] : cache_targets) {
cache_targets_ids.emplace_back(k.Id());
}
// write the target cache keys
bool failed{false};
{
TaskSystem ts{sqrt_jobs};
tc_writer_map.ConsumeAfterKeysReady(
&ts,
cache_targets_ids,
[]([[maybe_unused]] auto _) {}, // map doesn't set anything
[&failed, logger, log_level](auto const& msg, bool fatal) {
Logger::Log(logger,
log_level,
"While writing target cache entries:\n{}",
msg);
failed = failed or fatal;
});
}
// check for failures and cycles
if (failed) {
return;
}
if (auto error = DetectAndReportCycle(
"writing cache targets", tc_writer_map, kObjectInfoPrinter)) {
Logger::Log(logger, log_level, *error);
return;
}
Logger::Log(logger,
LogLevel::Debug,
"Finished backing up artifacts of export targets");
}
#endif // BOOTSTRAP_BUILD_TOOL
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