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// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef COMPONENTS_FEATURE_ENGAGEMENT_INTERNAL_EVENT_STORAGE_VALIDATOR_H_
#define COMPONENTS_FEATURE_ENGAGEMENT_INTERNAL_EVENT_STORAGE_VALIDATOR_H_
#include <stdint.h>
#include <string>
namespace feature_engagement {
// A EventStorageValidator checks the required storage conditions for a given
// event, and checks if all conditions are met for storing it.
class EventStorageValidator {
public:
EventStorageValidator(const EventStorageValidator&) = delete;
EventStorageValidator& operator=(const EventStorageValidator&) = delete;
virtual ~EventStorageValidator() = default;
// Returns true iff new events of this type should be stored.
// This is typically called before storing each incoming event.
virtual bool ShouldStore(const std::string& event_name) const = 0;
// Returns true iff events of this type should be kept for the given day.
// This is typically called during load of the internal database state, to
// possibly throw away old data.
virtual bool ShouldKeep(const std::string& event_name,
uint32_t event_day,
uint32_t current_day) const = 0;
protected:
EventStorageValidator() = default;
};
} // namespace feature_engagement
#endif // COMPONENTS_FEATURE_ENGAGEMENT_INTERNAL_EVENT_STORAGE_VALIDATOR_H_
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