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// Copyright 2017 Citra Emulator Project
// Licensed under GPLv2 or any later version
// Refer to the license.txt file included.
#pragma once
#include <chrono>
#include <map>
#include <memory>
#include <string>
#include "common/common_types.h"
namespace Telemetry {
/// Field type, used for grouping fields together in the final submitted telemetry log
enum class FieldType : u8 {
None = 0, ///< No specified field group
App, ///< yuzu application fields (e.g. version, branch, etc.)
Session, ///< Emulated session fields (e.g. title ID, log, etc.)
Performance, ///< Emulated performance (e.g. fps, emulated CPU speed, etc.)
UserFeedback, ///< User submitted feedback (e.g. star rating, user notes, etc.)
UserConfig, ///< User configuration fields (e.g. emulated CPU core, renderer, etc.)
UserSystem, ///< User system information (e.g. host CPU type, RAM, etc.)
};
struct VisitorInterface;
/**
* Interface class for telemetry data fields.
*/
class FieldInterface : NonCopyable {
public:
virtual ~FieldInterface() = default;
/**
* Accept method for the visitor pattern.
* @param visitor Reference to the visitor that will visit this field.
*/
virtual void Accept(VisitorInterface& visitor) const = 0;
/**
* Gets the name of this field.
* @returns Name of this field as a string.
*/
virtual const std::string& GetName() const = 0;
};
/**
* Represents a telemetry data field, i.e. a unit of data that gets logged and submitted to our
* telemetry web service.
*/
template <typename T>
class Field : public FieldInterface {
public:
Field(FieldType type, std::string name, const T& value)
: name(std::move(name)), type(type), value(value) {}
Field(FieldType type, std::string name, T&& value)
: name(std::move(name)), type(type), value(std::move(value)) {}
Field(const Field&) = default;
Field& operator=(const Field&) = default;
Field(Field&&) = default;
Field& operator=(Field&& other) = default;
void Accept(VisitorInterface& visitor) const override;
const std::string& GetName() const override {
return name;
}
/**
* Returns the type of the field.
*/
FieldType GetType() const {
return type;
}
/**
* Returns the value of the field.
*/
const T& GetValue() const {
return value;
}
bool operator==(const Field& other) const {
return (type == other.type) && (name == other.name) && (value == other.value);
}
bool operator!=(const Field& other) const {
return !(*this == other);
}
private:
std::string name; ///< Field name, must be unique
FieldType type{}; ///< Field type, used for grouping fields together
T value; ///< Field value
};
/**
* Collection of data fields that have been logged.
*/
class FieldCollection final : NonCopyable {
public:
FieldCollection() = default;
/**
* Accept method for the visitor pattern, visits each field in the collection.
* @param visitor Reference to the visitor that will visit each field.
*/
void Accept(VisitorInterface& visitor) const;
/**
* Creates a new field and adds it to the field collection.
* @param type Type of the field to add.
* @param name Name of the field to add.
* @param value Value for the field to add.
*/
template <typename T>
void AddField(FieldType type, const char* name, T value) {
return AddField(std::make_unique<Field<T>>(type, name, std::move(value)));
}
/**
* Adds a new field to the field collection.
* @param field Field to add to the field collection.
*/
void AddField(std::unique_ptr<FieldInterface> field);
private:
std::map<std::string, std::unique_ptr<FieldInterface>> fields;
};
/**
* Telemetry fields visitor interface class. A backend to log to a web service should implement
* this interface.
*/
struct VisitorInterface : NonCopyable {
virtual ~VisitorInterface() = default;
virtual void Visit(const Field<bool>& field) = 0;
virtual void Visit(const Field<double>& field) = 0;
virtual void Visit(const Field<float>& field) = 0;
virtual void Visit(const Field<u8>& field) = 0;
virtual void Visit(const Field<u16>& field) = 0;
virtual void Visit(const Field<u32>& field) = 0;
virtual void Visit(const Field<u64>& field) = 0;
virtual void Visit(const Field<s8>& field) = 0;
virtual void Visit(const Field<s16>& field) = 0;
virtual void Visit(const Field<s32>& field) = 0;
virtual void Visit(const Field<s64>& field) = 0;
virtual void Visit(const Field<std::string>& field) = 0;
virtual void Visit(const Field<const char*>& field) = 0;
virtual void Visit(const Field<std::chrono::microseconds>& field) = 0;
/// Completion method, called once all fields have been visited
virtual void Complete() = 0;
};
/**
* Empty implementation of VisitorInterface that drops all fields. Used when a functional
* backend implementation is not available.
*/
struct NullVisitor : public VisitorInterface {
~NullVisitor() = default;
void Visit(const Field<bool>& /*field*/) override {}
void Visit(const Field<double>& /*field*/) override {}
void Visit(const Field<float>& /*field*/) override {}
void Visit(const Field<u8>& /*field*/) override {}
void Visit(const Field<u16>& /*field*/) override {}
void Visit(const Field<u32>& /*field*/) override {}
void Visit(const Field<u64>& /*field*/) override {}
void Visit(const Field<s8>& /*field*/) override {}
void Visit(const Field<s16>& /*field*/) override {}
void Visit(const Field<s32>& /*field*/) override {}
void Visit(const Field<s64>& /*field*/) override {}
void Visit(const Field<std::string>& /*field*/) override {}
void Visit(const Field<const char*>& /*field*/) override {}
void Visit(const Field<std::chrono::microseconds>& /*field*/) override {}
void Complete() override {}
};
} // namespace Telemetry
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