blob: c9f3512fb1cefe0f6c2bae898ca496ffd4714761 [file] [log] [blame]
// Copyright 2018 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <memory>
#include <string>
#include "logger/logger_interface.h"
#include "logger/internal_metrics_config.cb.h"
namespace cobalt {
namespace logger {
// InternalMetrics defines the methods used for collecting cobalt-internal
// metrics.
class InternalMetrics {
// LoggerCalled (cobalt_internal::metrics::logger_calls_made) is logged for
// every call to Logger along with which method was called.
virtual void LoggerCalled(LoggerCallsMadeEventCode event_code) = 0;
virtual ~InternalMetrics() {}
// NoOpInternalMetrics is to be used when the LoggerInterface* provided to the
// Logger constructor is nullptr. It stubs out all of the calls in the
// InternalMetrics interface, allowing code to safely make these calls even if
// no LoggerInterface* was provided.
class NoOpInternalMetrics : public InternalMetrics {
void LoggerCalled(LoggerCallsMadeEventCode event_code) override {}
~NoOpInternalMetrics() override {}
// InternalMetricsImpl is the actual implementation of InternalMetrics. It is a
// wrapper around the (non nullptr) LoggerInterface* that was provided to the
// Logger constructor.
class InternalMetricsImpl : public InternalMetrics {
explicit InternalMetricsImpl(LoggerInterface* logger);
void LoggerCalled(LoggerCallsMadeEventCode event_code) override;
~InternalMetricsImpl() override {}
LoggerInterface* logger_; // not owned
} // namespace logger
} // namespace cobalt