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// Copyright 2020 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_QUERY_TILES_LOGGER_H_
#define COMPONENTS_QUERY_TILES_LOGGER_H_
namespace base {
class Value;
}
namespace query_tiles {
// A helper class to expose internals of the query-tiles service to a logging
// component and/or debug UI.
class Logger {
public:
class Observer {
public:
virtual ~Observer() = default;
// Called whenever the service status changes.
virtual void OnServiceStatusChanged(const base::Value& status) = 0;
// Called when the tile group data is available.
virtual void OnTileDataAvailable(const base::Value& status) = 0;
};
virtual ~Logger() = default;
virtual void AddObserver(Observer* observer) = 0;
virtual void RemoveObserver(Observer* observer) = 0;
Logger(const Logger& other) = delete;
Logger& operator=(const Logger& other) = delete;
// Returns the current status of query tile service.
// The serialized format will be:
// {
// fetcherStatus:[INITIAL, SUCCESS, FAIL, SUSPEND]
// groupStatus:[SUCCESS, UN_INIT, NO_TILES, DB_FAIL]
// }
virtual base::Value GetServiceStatus() = 0;
// Returns the formatted raw data stored in database.
// The serialized format will be:
// {
// groupInfo(string)
// tileProto(string)
// }
virtual base::Value GetTileData() = 0;
protected:
Logger() = default;
};
} // namespace query_tiles
#endif // COMPONENTS_QUERY_TILES_LOGGER_H_
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