| // Copyright 2017 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 COMPONENTS_FEATURE_ENGAGEMENT_INTERNAL_EVENT_MODEL_IMPL_H_ |
| #define COMPONENTS_FEATURE_ENGAGEMENT_INTERNAL_EVENT_MODEL_IMPL_H_ |
| |
| #include <map> |
| #include <memory> |
| #include <string> |
| #include <vector> |
| |
| #include "base/macros.h" |
| #include "base/memory/weak_ptr.h" |
| #include "components/feature_engagement/internal/event_model.h" |
| #include "components/feature_engagement/internal/proto/feature_event.pb.h" |
| |
| namespace feature_engagement { |
| class EventStorageValidator; |
| class EventStore; |
| |
| // A EventModelImpl provides the default implementation of the EventModel. |
| class EventModelImpl : public EventModel { |
| public: |
| EventModelImpl(std::unique_ptr<EventStore> store, |
| std::unique_ptr<EventStorageValidator> storage_validator); |
| ~EventModelImpl() override; |
| |
| // EventModel implementation. |
| void Initialize(const OnModelInitializationFinished& callback, |
| uint32_t current_day) override; |
| bool IsReady() const override; |
| const Event* GetEvent(const std::string& event_name) const override; |
| void IncrementEvent(const std::string& event_name, |
| uint32_t current_day) override; |
| |
| private: |
| // Callback for loading the underlying store. |
| void OnStoreLoaded(const OnModelInitializationFinished& callback, |
| uint32_t current_day, |
| bool success, |
| std::unique_ptr<std::vector<Event>> events); |
| |
| // Internal version for getting the non-const version of a stored Event. |
| // Creates the event if it is not already stored. |
| Event& GetNonConstEvent(const std::string& event_name); |
| |
| // The underlying store for all events. |
| std::unique_ptr<EventStore> store_; |
| |
| // A utility for checking whether new events should be stored and for whether |
| // old events should be kept. |
| std::unique_ptr<EventStorageValidator> storage_validator_; |
| |
| // An in-memory representation of all events. |
| std::map<std::string, Event> events_; |
| |
| // Whether the model has been fully initialized. |
| bool ready_; |
| |
| base::WeakPtrFactory<EventModelImpl> weak_factory_; |
| |
| DISALLOW_COPY_AND_ASSIGN(EventModelImpl); |
| }; |
| |
| } // namespace feature_engagement |
| |
| #endif // COMPONENTS_FEATURE_ENGAGEMENT_INTERNAL_EVENT_MODEL_IMPL_H_ |