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// Copyright (C) 2020 The Android Open Source Project
//
// 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 <libsnapshot/snapshot_stats.h>
#include <sstream>
#include <android-base/file.h>
#include <android-base/logging.h>
#include "utility.h"
namespace android {
namespace snapshot {
SnapshotMergeStats* SnapshotMergeStats::GetInstance(SnapshotManager& parent) {
static SnapshotMergeStats g_instance(parent.GetMergeStateFilePath());
CHECK(g_instance.path_ == parent.GetMergeStateFilePath());
return &g_instance;
}
SnapshotMergeStats::SnapshotMergeStats(const std::string& path) : path_(path), running_(false) {}
bool SnapshotMergeStats::ReadState() {
std::string contents;
if (!android::base::ReadFileToString(path_, &contents)) {
PLOG(INFO) << "Read merge statistics file failed";
return false;
}
if (!report_.ParseFromString(contents)) {
LOG(ERROR) << "Unable to parse merge statistics file as SnapshotMergeReport";
return false;
}
return true;
}
bool SnapshotMergeStats::WriteState() {
std::string contents;
if (!report_.SerializeToString(&contents)) {
LOG(ERROR) << "Unable to serialize SnapshotMergeStats.";
return false;
}
if (!WriteStringToFileAtomic(contents, path_)) {
PLOG(ERROR) << "Could not write to merge statistics file";
return false;
}
return true;
}
bool SnapshotMergeStats::DeleteState() {
std::string error;
if (!android::base::RemoveFileIfExists(path_, &error)) {
LOG(ERROR) << "Failed to remove merge statistics file " << path_ << ": " << error;
return false;
}
return true;
}
bool SnapshotMergeStats::Start() {
if (running_) {
LOG(ERROR) << "SnapshotMergeStats running_ == " << running_;
return false;
}
running_ = true;
start_time_ = std::chrono::steady_clock::now();
if (ReadState()) {
report_.set_resume_count(report_.resume_count() + 1);
} else {
report_.set_resume_count(0);
report_.set_state(UpdateState::None);
}
return WriteState();
}
void SnapshotMergeStats::set_state(android::snapshot::UpdateState state) {
report_.set_state(state);
}
uint64_t SnapshotMergeStats::cow_file_size() {
return report_.cow_file_size();
}
uint64_t SnapshotMergeStats::total_cow_size_bytes() {
return report_.total_cow_size_bytes();
}
uint64_t SnapshotMergeStats::estimated_cow_size_bytes() {
return report_.estimated_cow_size_bytes();
}
void SnapshotMergeStats::set_boot_complete_time_ms(uint32_t ms) {
report_.set_boot_complete_time_ms(ms);
}
uint32_t SnapshotMergeStats::boot_complete_time_ms() {
return report_.boot_complete_time_ms();
}
void SnapshotMergeStats::set_boot_complete_to_merge_start_time_ms(uint32_t ms) {
report_.set_boot_complete_to_merge_start_time_ms(ms);
}
uint32_t SnapshotMergeStats::boot_complete_to_merge_start_time_ms() {
return report_.boot_complete_to_merge_start_time_ms();
}
void SnapshotMergeStats::set_merge_failure_code(MergeFailureCode code) {
report_.set_merge_failure_code(code);
}
MergeFailureCode SnapshotMergeStats::merge_failure_code() {
return report_.merge_failure_code();
}
void SnapshotMergeStats::set_source_build_fingerprint(const std::string& fingerprint) {
report_.set_source_build_fingerprint(fingerprint);
}
std::string SnapshotMergeStats::source_build_fingerprint() {
return report_.source_build_fingerprint();
}
class SnapshotMergeStatsResultImpl : public SnapshotMergeStats::Result {
public:
SnapshotMergeStatsResultImpl(const SnapshotMergeReport& report,
std::chrono::steady_clock::duration merge_time)
: report_(report), merge_time_(merge_time) {}
const SnapshotMergeReport& report() const override { return report_; }
std::chrono::steady_clock::duration merge_time() const override { return merge_time_; }
private:
SnapshotMergeReport report_;
std::chrono::steady_clock::duration merge_time_;
};
std::unique_ptr<SnapshotMergeStats::Result> SnapshotMergeStats::Finish() {
if (!running_) {
LOG(ERROR) << "SnapshotMergeStats running_ == " << running_;
return nullptr;
}
running_ = false;
auto result = std::make_unique<SnapshotMergeStatsResultImpl>(
report_, std::chrono::steady_clock::now() - start_time_);
// We still want to report result if state is not deleted. Just leave
// it there and move on. A side effect is that it may be reported over and
// over again in the future, but there is nothing we can do.
(void)DeleteState();
return result;
}
} // namespace snapshot
} // namespace android
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