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// Copyright 2022 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/optimization_guide/core/optimization_guide_logger.h"
#include "base/logging.h"
#include "base/no_destructor.h"
#include "base/observer_list.h"
#include "base/strings/strcat.h"
#include "base/strings/string_number_conversions.h"
#include "components/optimization_guide/core/hints/hints_processing_util.h"
#include "components/optimization_guide/core/optimization_guide_switches.h"
namespace {
// TODO(rajendrant): Verify if all debug messages before browser startup are
// getting saved without being dropped, when some hints fetching and model
// downloading happens.
constexpr size_t kMaxRecentLogMessages = 100;
} // namespace
OptimizationGuideLogger::LogMessageBuilder::LogMessageBuilder(
optimization_guide_common::mojom::LogSource log_source,
const std::string& source_file,
int source_line,
OptimizationGuideLogger* optimization_guide_logger)
: log_source_(log_source),
source_file_(source_file),
source_line_(source_line),
optimization_guide_logger_(optimization_guide_logger) {}
OptimizationGuideLogger::LogMessageBuilder::~LogMessageBuilder() {
if (!optimization_guide_logger_) {
// It is possible for this to not be available in tests, so just return
// here.
return;
}
std::string message = base::StrCat(messages_);
optimization_guide_logger_->OnLogMessageAdded(
base::Time::Now(), log_source_, source_file_, source_line_, message);
DVLOG(1) << source_file_ << "(" << source_line_ << ") " << message;
}
OptimizationGuideLogger::LogMessageBuilder&
OptimizationGuideLogger::LogMessageBuilder::operator<<(const char* message) {
messages_.push_back(message);
return *this;
}
OptimizationGuideLogger::LogMessageBuilder&
OptimizationGuideLogger::LogMessageBuilder::operator<<(
const std::string& message) {
messages_.push_back(message);
return *this;
}
OptimizationGuideLogger::LogMessageBuilder&
OptimizationGuideLogger::LogMessageBuilder::operator<<(const GURL& url) {
messages_.push_back(url.possibly_invalid_spec());
return *this;
}
OptimizationGuideLogger::LogMessageBuilder&
OptimizationGuideLogger::LogMessageBuilder::operator<<(
optimization_guide::proto::RequestContext request_context) {
messages_.push_back(
optimization_guide::proto::RequestContext_Name(request_context));
return *this;
}
OptimizationGuideLogger::LogMessageBuilder&
OptimizationGuideLogger::LogMessageBuilder::operator<<(
optimization_guide::proto::OptimizationType optimization_type) {
messages_.push_back(
optimization_guide::GetStringNameForOptimizationType(optimization_type));
return *this;
}
OptimizationGuideLogger::LogMessageBuilder&
OptimizationGuideLogger::LogMessageBuilder::operator<<(
optimization_guide::OptimizationTypeDecision optimization_type_decision) {
messages_.push_back(
base::NumberToString(static_cast<int>(optimization_type_decision)));
return *this;
}
OptimizationGuideLogger::LogMessageBuilder&
OptimizationGuideLogger::LogMessageBuilder::operator<<(
optimization_guide::OptimizationGuideDecision optimization_guide_decision) {
messages_.push_back(
GetStringForOptimizationGuideDecision(optimization_guide_decision));
return *this;
}
OptimizationGuideLogger::LogMessageBuilder&
OptimizationGuideLogger::LogMessageBuilder::operator<<(
optimization_guide::proto::OptimizationTarget optimization_target) {
messages_.push_back(
optimization_guide::proto::OptimizationTarget_Name(optimization_target));
return *this;
}
OptimizationGuideLogger::LogMessage::LogMessage(
base::Time event_time,
optimization_guide_common::mojom::LogSource log_source,
const std::string& source_file,
int source_line,
const std::string& message)
: event_time(event_time),
log_source(log_source),
source_file(source_file),
source_line(source_line),
message(message) {}
// static
OptimizationGuideLogger* OptimizationGuideLogger::GetInstance() {
static base::NoDestructor<OptimizationGuideLogger> instance;
return instance.get();
}
OptimizationGuideLogger::OptimizationGuideLogger()
: command_line_flag_enabled_(
optimization_guide::switches::IsDebugLogsEnabled()) {
if (command_line_flag_enabled_) {
recent_log_messages_.reserve(kMaxRecentLogMessages);
}
}
OptimizationGuideLogger::~OptimizationGuideLogger() = default;
void OptimizationGuideLogger::AddObserver(
OptimizationGuideLogger::Observer* observer) {
observers_.AddObserver(observer);
if (command_line_flag_enabled_) {
for (const auto& message : recent_log_messages_) {
for (Observer& obs : observers_) {
obs.OnLogMessageAdded(message.event_time, message.log_source,
message.source_file, message.source_line,
message.message);
}
}
}
}
void OptimizationGuideLogger::RemoveObserver(
OptimizationGuideLogger::Observer* observer) {
observers_.RemoveObserver(observer);
}
void OptimizationGuideLogger::OnLogMessageAdded(
base::Time event_time,
optimization_guide_common::mojom::LogSource log_source,
const std::string& source_file,
int source_line,
const std::string& message) {
if (command_line_flag_enabled_) {
recent_log_messages_.emplace_back(event_time, log_source, source_file,
source_line, message);
if (recent_log_messages_.size() > kMaxRecentLogMessages)
recent_log_messages_.pop_front();
}
for (Observer& obs : observers_)
obs.OnLogMessageAdded(event_time, log_source, source_file, source_line,
message);
}
bool OptimizationGuideLogger::ShouldEnableDebugLogs() const {
return !observers_.empty() || command_line_flag_enabled_;
}
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