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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_PERFORMANCE_MONITOR_KEY_BUILDER_H_
#define CHROME_BROWSER_PERFORMANCE_MONITOR_KEY_BUILDER_H_
#include <map>
#include "chrome/browser/performance_monitor/event.h"
#include "chrome/browser/performance_monitor/metric.h"
namespace performance_monitor {
struct RecentKey {
RecentKey(const std::string& recent_time,
MetricType recent_type,
const std::string& recent_activity);
~RecentKey();
const std::string time;
const MetricType type;
const std::string activity;
};
struct MaxValueKey {
MaxValueKey(MetricType max_value_type,
const std::string& max_value_activity)
: type(max_value_type),
activity(max_value_activity) {}
~MaxValueKey() {}
const MetricType type;
const std::string activity;
};
struct MetricKey {
MetricKey(const std::string& metric_time,
MetricType metric_type,
const std::string& metric_activity);
~MetricKey();
const std::string time;
const MetricType type;
const std::string activity;
};
// This class is responsible for building the keys which are used internally by
// PerformanceMonitor's database. These keys should only be referenced by the
// database, and should not be used externally.
class KeyBuilder {
public:
KeyBuilder();
~KeyBuilder();
// Key Creation: Create the keys for different databases. The schemas are
// listed with the methods. A '-' in the schema represents kDelimeter.
// Key Schema: <Time>
std::string CreateActiveIntervalKey(const base::Time& time);
// Key Schema: <Metric>-<Time>-<Activity>
std::string CreateMetricKey(const base::Time& time,
const MetricType type,
const std::string& activity);
// Key Schema: <Time>-<Event Type>
std::string CreateEventKey(const base::Time& time, const EventType type);
// Key Schema: <Time>-<Metric>-<Activity>
std::string CreateRecentKey(const base::Time& time,
const MetricType type,
const std::string& activity);
// Key Schema: <Activity>-<Metric>
std::string CreateRecentMapKey(const MetricType type,
const std::string& activity);
std::string CreateMaxValueKey(const MetricType type,
const std::string& activity);
EventType EventKeyToEventType(const std::string& key);
RecentKey SplitRecentKey(const std::string& key);
MetricKey SplitMetricKey(const std::string& key);
private:
// Populate the maps from [Event, Metric]Type to key characters.
void PopulateKeyMaps();
std::map<EventType, int> event_type_to_event_key_char_;
std::map<int, EventType> event_key_char_to_event_type_;
std::map<MetricType, int> metric_type_to_metric_key_char_;
std::map<int, MetricType> metric_key_char_to_metric_type_;
};
} // namespace performance_monitor
#endif // CHROME_BROWSER_PERFORMANCE_MONITOR_KEY_BUILDER_H_
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