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Move RTCStatsMember+Interface to a separate file.

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Pure move CL. Avoids circular dependency in a future CL.

Bug: webrtc:15164
Change-Id: Ide423be95db30b7f3cfaea946e18e12980175f2b
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/333920
Reviewed-by: Harald Alvestrand <hta@webrtc.org>
Commit-Queue: Henrik Boström <hbos@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#41496}
This commit is contained in:
Henrik Boström 2024-01-09 15:40:42 +01:00 committed by WebRTC LUCI CQ
parent a742df24fd
commit 98b0da181b
6 changed files with 450 additions and 406 deletions
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1
api/BUILD.gn
View File

@ -773,6 +773,7 @@ rtc_source_set("rtc_stats_api") {
sources = [ sources = [
"stats/rtc_stats.h", "stats/rtc_stats.h",
"stats/rtc_stats_collector_callback.h", "stats/rtc_stats_collector_callback.h",
"stats/rtc_stats_member.h",
"stats/rtc_stats_report.h", "stats/rtc_stats_report.h",
"stats/rtcstats_objects.h", "stats/rtcstats_objects.h",
] ]

183
api/stats/rtc_stats.h
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@ -20,7 +20,7 @@
#include <utility> #include <utility>
#include <vector> #include <vector>
#include "absl/types/optional.h" #include "api/stats/rtc_stats_member.h"
#include "api/units/timestamp.h" #include "api/units/timestamp.h"
#include "rtc_base/checks.h" #include "rtc_base/checks.h"
#include "rtc_base/system/rtc_export.h" #include "rtc_base/system/rtc_export.h"
@ -28,8 +28,6 @@
namespace webrtc { namespace webrtc {
class RTCStatsMemberInterface;
// Abstract base class for RTCStats-derived dictionaries, see // Abstract base class for RTCStats-derived dictionaries, see
// https://w3c.github.io/webrtc-stats/. // https://w3c.github.io/webrtc-stats/.
// //
@ -206,185 +204,6 @@ class RTC_EXPORT RTCStats {
return parent_class::MembersOfThisObjectAndAncestors(0); \ return parent_class::MembersOfThisObjectAndAncestors(0); \
} }
// Interface for `RTCStats` members, which have a name and a value of a type
// defined in a subclass. Only the types listed in `Type` are supported, these
// are implemented by `RTCStatsMember<T>`. The value of a member may be
// undefined, the value can only be read if `is_defined`.
class RTCStatsMemberInterface {
public:
// Member value types.
enum Type {
kBool, // bool
kInt32, // int32_t
kUint32, // uint32_t
kInt64, // int64_t
kUint64, // uint64_t
kDouble, // double
kString, // std::string
kSequenceBool, // std::vector<bool>
kSequenceInt32, // std::vector<int32_t>
kSequenceUint32, // std::vector<uint32_t>
kSequenceInt64, // std::vector<int64_t>
kSequenceUint64, // std::vector<uint64_t>
kSequenceDouble, // std::vector<double>
kSequenceString, // std::vector<std::string>
kMapStringUint64, // std::map<std::string, uint64_t>
kMapStringDouble, // std::map<std::string, double>
};
virtual ~RTCStatsMemberInterface() {}
const char* name() const { return name_; }
virtual Type type() const = 0;
virtual bool is_sequence() const = 0;
virtual bool is_string() const = 0;
virtual bool is_defined() const = 0;
// Type and value comparator. The names are not compared. These operators are
// exposed for testing.
bool operator==(const RTCStatsMemberInterface& other) const {
return IsEqual(other);
}
bool operator!=(const RTCStatsMemberInterface& other) const {
return !(*this == other);
}
virtual std::string ValueToString() const = 0;
// This is the same as ValueToString except for kInt64 and kUint64 types,
// where the value is represented as a double instead of as an integer.
// Since JSON stores numbers as floating point numbers, very large integers
// cannot be accurately represented, so we prefer to display them as doubles
// instead.
virtual std::string ValueToJson() const = 0;
template <typename T>
const T& cast_to() const {
RTC_DCHECK_EQ(type(), T::StaticType());
return static_cast<const T&>(*this);
}
protected:
explicit RTCStatsMemberInterface(const char* name) : name_(name) {}
virtual bool IsEqual(const RTCStatsMemberInterface& other) const = 0;
const char* const name_;
};
// Template implementation of `RTCStatsMemberInterface`.
// The supported types are the ones described by
// `RTCStatsMemberInterface::Type`.
template <typename T>
class RTCStatsMember : public RTCStatsMemberInterface {
public:
explicit RTCStatsMember(const char* name)
: RTCStatsMemberInterface(name), value_() {}
RTCStatsMember(const char* name, const T& value)
: RTCStatsMemberInterface(name), value_(value) {}
RTCStatsMember(const char* name, T&& value)
: RTCStatsMemberInterface(name), value_(std::move(value)) {}
explicit RTCStatsMember(const RTCStatsMember<T>& other)
: RTCStatsMemberInterface(other.name_), value_(other.value_) {}
explicit RTCStatsMember(RTCStatsMember<T>&& other)
: RTCStatsMemberInterface(other.name_), value_(std::move(other.value_)) {}
static Type StaticType();
Type type() const override { return StaticType(); }
bool is_sequence() const override;
bool is_string() const override;
bool is_defined() const override { return value_.has_value(); }
std::string ValueToString() const override;
std::string ValueToJson() const override;
template <typename U>
inline T ValueOrDefault(U default_value) const {
return value_.value_or(default_value);
}
// Assignment operators.
T& operator=(const T& value) {
value_ = value;
return value_.value();
}
T& operator=(const T&& value) {
value_ = std::move(value);
return value_.value();
}
// Getter methods that look the same as absl::optional<T>. Please prefer these
// in order to unblock replacing RTCStatsMember<T> with absl::optional<T> in
// the future (https://crbug.com/webrtc/15164).
bool has_value() const { return value_.has_value(); }
const T& value() const { return value_.value(); }
T& value() { return value_.value(); }
T& operator*() {
RTC_DCHECK(value_);
return *value_;
}
const T& operator*() const {
RTC_DCHECK(value_);
return *value_;
}
T* operator->() {
RTC_DCHECK(value_);
return &(*value_);
}
const T* operator->() const {
RTC_DCHECK(value_);
return &(*value_);
}
protected:
bool IsEqual(const RTCStatsMemberInterface& other) const override {
if (type() != other.type())
return false;
const RTCStatsMember<T>& other_t =
static_cast<const RTCStatsMember<T>&>(other);
return value_ == other_t.value_;
}
private:
absl::optional<T> value_;
};
namespace rtc_stats_internal {
typedef std::map<std::string, uint64_t> MapStringUint64;
typedef std::map<std::string, double> MapStringDouble;
} // namespace rtc_stats_internal
#define WEBRTC_DECLARE_RTCSTATSMEMBER(T) \
template <> \
RTC_EXPORT RTCStatsMemberInterface::Type RTCStatsMember<T>::StaticType(); \
template <> \
RTC_EXPORT bool RTCStatsMember<T>::is_sequence() const; \
template <> \
RTC_EXPORT bool RTCStatsMember<T>::is_string() const; \
template <> \
RTC_EXPORT std::string RTCStatsMember<T>::ValueToString() const; \
template <> \
RTC_EXPORT std::string RTCStatsMember<T>::ValueToJson() const; \
extern template class RTC_EXPORT_TEMPLATE_DECLARE(RTC_EXPORT) \
RTCStatsMember<T>
WEBRTC_DECLARE_RTCSTATSMEMBER(bool);
WEBRTC_DECLARE_RTCSTATSMEMBER(int32_t);
WEBRTC_DECLARE_RTCSTATSMEMBER(uint32_t);
WEBRTC_DECLARE_RTCSTATSMEMBER(int64_t);
WEBRTC_DECLARE_RTCSTATSMEMBER(uint64_t);
WEBRTC_DECLARE_RTCSTATSMEMBER(double);
WEBRTC_DECLARE_RTCSTATSMEMBER(std::string);
WEBRTC_DECLARE_RTCSTATSMEMBER(std::vector<bool>);
WEBRTC_DECLARE_RTCSTATSMEMBER(std::vector<int32_t>);
WEBRTC_DECLARE_RTCSTATSMEMBER(std::vector<uint32_t>);
WEBRTC_DECLARE_RTCSTATSMEMBER(std::vector<int64_t>);
WEBRTC_DECLARE_RTCSTATSMEMBER(std::vector<uint64_t>);
WEBRTC_DECLARE_RTCSTATSMEMBER(std::vector<double>);
WEBRTC_DECLARE_RTCSTATSMEMBER(std::vector<std::string>);
WEBRTC_DECLARE_RTCSTATSMEMBER(rtc_stats_internal::MapStringUint64);
WEBRTC_DECLARE_RTCSTATSMEMBER(rtc_stats_internal::MapStringDouble);
} // namespace webrtc } // namespace webrtc
#endif // API_STATS_RTC_STATS_H_ #endif // API_STATS_RTC_STATS_H_

207
api/stats/rtc_stats_member.h Normal file
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@ -0,0 +1,207 @@
/*
* Copyright 2023 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#ifndef API_STATS_RTC_STATS_MEMBER_H_
#define API_STATS_RTC_STATS_MEMBER_H_
#include <map>
#include <string>
#include <utility>
#include <vector>
#include "absl/types/optional.h"
#include "rtc_base/checks.h"
#include "rtc_base/system/rtc_export.h"
#include "rtc_base/system/rtc_export_template.h"
namespace webrtc {
// Interface for `RTCStats` members, which have a name and a value of a type
// defined in a subclass. Only the types listed in `Type` are supported, these
// are implemented by `RTCStatsMember<T>`. The value of a member may be
// undefined, the value can only be read if `is_defined`.
class RTCStatsMemberInterface {
public:
// Member value types.
enum Type {
kBool, // bool
kInt32, // int32_t
kUint32, // uint32_t
kInt64, // int64_t
kUint64, // uint64_t
kDouble, // double
kString, // std::string
kSequenceBool, // std::vector<bool>
kSequenceInt32, // std::vector<int32_t>
kSequenceUint32, // std::vector<uint32_t>
kSequenceInt64, // std::vector<int64_t>
kSequenceUint64, // std::vector<uint64_t>
kSequenceDouble, // std::vector<double>
kSequenceString, // std::vector<std::string>
kMapStringUint64, // std::map<std::string, uint64_t>
kMapStringDouble, // std::map<std::string, double>
};
virtual ~RTCStatsMemberInterface() {}
const char* name() const { return name_; }
virtual Type type() const = 0;
virtual bool is_sequence() const = 0;
virtual bool is_string() const = 0;
virtual bool is_defined() const = 0;
// Type and value comparator. The names are not compared. These operators are
// exposed for testing.
bool operator==(const RTCStatsMemberInterface& other) const {
return IsEqual(other);
}
bool operator!=(const RTCStatsMemberInterface& other) const {
return !(*this == other);
}
virtual std::string ValueToString() const = 0;
// This is the same as ValueToString except for kInt64 and kUint64 types,
// where the value is represented as a double instead of as an integer.
// Since JSON stores numbers as floating point numbers, very large integers
// cannot be accurately represented, so we prefer to display them as doubles
// instead.
virtual std::string ValueToJson() const = 0;
template <typename T>
const T& cast_to() const {
RTC_DCHECK_EQ(type(), T::StaticType());
return static_cast<const T&>(*this);
}
protected:
explicit RTCStatsMemberInterface(const char* name) : name_(name) {}
virtual bool IsEqual(const RTCStatsMemberInterface& other) const = 0;
const char* const name_;
};
// Template implementation of `RTCStatsMemberInterface`.
// The supported types are the ones described by
// `RTCStatsMemberInterface::Type`.
template <typename T>
class RTCStatsMember : public RTCStatsMemberInterface {
public:
explicit RTCStatsMember(const char* name)
: RTCStatsMemberInterface(name), value_() {}
RTCStatsMember(const char* name, const T& value)
: RTCStatsMemberInterface(name), value_(value) {}
RTCStatsMember(const char* name, T&& value)
: RTCStatsMemberInterface(name), value_(std::move(value)) {}
explicit RTCStatsMember(const RTCStatsMember<T>& other)
: RTCStatsMemberInterface(other.name_), value_(other.value_) {}
explicit RTCStatsMember(RTCStatsMember<T>&& other)
: RTCStatsMemberInterface(other.name_), value_(std::move(other.value_)) {}
static Type StaticType();
Type type() const override { return StaticType(); }
bool is_sequence() const override;
bool is_string() const override;
bool is_defined() const override { return value_.has_value(); }
std::string ValueToString() const override;
std::string ValueToJson() const override;
template <typename U>
inline T ValueOrDefault(U default_value) const {
return value_.value_or(default_value);
}
// Assignment operators.
T& operator=(const T& value) {
value_ = value;
return value_.value();
}
T& operator=(const T&& value) {
value_ = std::move(value);
return value_.value();
}
// Getter methods that look the same as absl::optional<T>. Please prefer these
// in order to unblock replacing RTCStatsMember<T> with absl::optional<T> in
// the future (https://crbug.com/webrtc/15164).
bool has_value() const { return value_.has_value(); }
const T& value() const { return value_.value(); }
T& value() { return value_.value(); }
T& operator*() {
RTC_DCHECK(value_);
return *value_;
}
const T& operator*() const {
RTC_DCHECK(value_);
return *value_;
}
T* operator->() {
RTC_DCHECK(value_);
return &(*value_);
}
const T* operator->() const {
RTC_DCHECK(value_);
return &(*value_);
}
protected:
bool IsEqual(const RTCStatsMemberInterface& other) const override {
if (type() != other.type())
return false;
const RTCStatsMember<T>& other_t =
static_cast<const RTCStatsMember<T>&>(other);
return value_ == other_t.value_;
}
private:
absl::optional<T> value_;
};
namespace rtc_stats_internal {
typedef std::map<std::string, uint64_t> MapStringUint64;
typedef std::map<std::string, double> MapStringDouble;
} // namespace rtc_stats_internal
#define WEBRTC_DECLARE_RTCSTATSMEMBER(T) \
template <> \
RTC_EXPORT RTCStatsMemberInterface::Type RTCStatsMember<T>::StaticType(); \
template <> \
RTC_EXPORT bool RTCStatsMember<T>::is_sequence() const; \
template <> \
RTC_EXPORT bool RTCStatsMember<T>::is_string() const; \
template <> \
RTC_EXPORT std::string RTCStatsMember<T>::ValueToString() const; \
template <> \
RTC_EXPORT std::string RTCStatsMember<T>::ValueToJson() const; \
extern template class RTC_EXPORT_TEMPLATE_DECLARE(RTC_EXPORT) \
RTCStatsMember<T>
WEBRTC_DECLARE_RTCSTATSMEMBER(bool);
WEBRTC_DECLARE_RTCSTATSMEMBER(int32_t);
WEBRTC_DECLARE_RTCSTATSMEMBER(uint32_t);
WEBRTC_DECLARE_RTCSTATSMEMBER(int64_t);
WEBRTC_DECLARE_RTCSTATSMEMBER(uint64_t);
WEBRTC_DECLARE_RTCSTATSMEMBER(double);
WEBRTC_DECLARE_RTCSTATSMEMBER(std::string);
WEBRTC_DECLARE_RTCSTATSMEMBER(std::vector<bool>);
WEBRTC_DECLARE_RTCSTATSMEMBER(std::vector<int32_t>);
WEBRTC_DECLARE_RTCSTATSMEMBER(std::vector<uint32_t>);
WEBRTC_DECLARE_RTCSTATSMEMBER(std::vector<int64_t>);
WEBRTC_DECLARE_RTCSTATSMEMBER(std::vector<uint64_t>);
WEBRTC_DECLARE_RTCSTATSMEMBER(std::vector<double>);
WEBRTC_DECLARE_RTCSTATSMEMBER(std::vector<std::string>);
WEBRTC_DECLARE_RTCSTATSMEMBER(rtc_stats_internal::MapStringUint64);
WEBRTC_DECLARE_RTCSTATSMEMBER(rtc_stats_internal::MapStringDouble);
} // namespace webrtc
#endif // API_STATS_RTC_STATS_MEMBER_H_

1
stats/BUILD.gn
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@ -17,6 +17,7 @@ rtc_library("rtc_stats") {
cflags = [] cflags = []
sources = [ sources = [
"rtc_stats.cc", "rtc_stats.cc",
"rtc_stats_member.cc",
"rtc_stats_report.cc", "rtc_stats_report.cc",
"rtcstats_objects.cc", "rtcstats_objects.cc",
] ]

224
stats/rtc_stats.cc
View File

@ -12,112 +12,10 @@
#include <cstdio> #include <cstdio>
#include "rtc_base/arraysize.h"
#include "rtc_base/string_encode.h"
#include "rtc_base/strings/string_builder.h" #include "rtc_base/strings/string_builder.h"
namespace webrtc { namespace webrtc {
namespace {
// Produces "[a,b,c]". Works for non-vector `RTCStatsMemberInterface::Type`
// types.
template <typename T>
std::string VectorToString(const std::vector<T>& vector) {
rtc::StringBuilder sb;
sb << "[";
const char* separator = "";
for (const T& element : vector) {
sb << separator << rtc::ToString(element);
separator = ",";
}
sb << "]";
return sb.Release();
}
// This overload is required because std::vector<bool> range loops don't
// return references but objects, causing -Wrange-loop-analysis diagnostics.
std::string VectorToString(const std::vector<bool>& vector) {
rtc::StringBuilder sb;
sb << "[";
const char* separator = "";
for (bool element : vector) {
sb << separator << rtc::ToString(element);
separator = ",";
}
sb << "]";
return sb.Release();
}
// Produces "[\"a\",\"b\",\"c\"]". Works for vectors of both const char* and
// std::string element types.
template <typename T>
std::string VectorOfStringsToString(const std::vector<T>& strings) {
rtc::StringBuilder sb;
sb << "[";
const char* separator = "";
for (const T& element : strings) {
sb << separator << "\"" << rtc::ToString(element) << "\"";
separator = ",";
}
sb << "]";
return sb.Release();
}
template <typename T>
std::string MapToString(const std::map<std::string, T>& map) {
rtc::StringBuilder sb;
sb << "{";
const char* separator = "";
for (const auto& element : map) {
sb << separator << rtc::ToString(element.first) << ":"
<< rtc::ToString(element.second);
separator = ",";
}
sb << "}";
return sb.Release();
}
template <typename T>
std::string ToStringAsDouble(const T value) {
// JSON represents numbers as floating point numbers with about 15 decimal
// digits of precision.
char buf[32];
const int len = std::snprintf(&buf[0], arraysize(buf), "%.16g",
static_cast<double>(value));
RTC_DCHECK_LE(len, arraysize(buf));
return std::string(&buf[0], len);
}
template <typename T>
std::string VectorToStringAsDouble(const std::vector<T>& vector) {
rtc::StringBuilder sb;
sb << "[";
const char* separator = "";
for (const T& element : vector) {
sb << separator << ToStringAsDouble<T>(element);
separator = ",";
}
sb << "]";
return sb.Release();
}
template <typename T>
std::string MapToStringAsDouble(const std::map<std::string, T>& map) {
rtc::StringBuilder sb;
sb << "{";
const char* separator = "";
for (const auto& element : map) {
sb << separator << "\"" << rtc::ToString(element.first)
<< "\":" << ToStringAsDouble(element.second);
separator = ",";
}
sb << "}";
return sb.Release();
}
} // namespace
bool RTCStats::operator==(const RTCStats& other) const { bool RTCStats::operator==(const RTCStats& other) const {
if (type() != other.type() || id() != other.id()) if (type() != other.type() || id() != other.id())
return false; return false;
@ -172,126 +70,4 @@ RTCStats::MembersOfThisObjectAndAncestors(size_t additional_capacity) const {
return members; return members;
} }
#define WEBRTC_DEFINE_RTCSTATSMEMBER(T, type, is_seq, is_str, to_str, to_json) \
template <> \
RTCStatsMemberInterface::Type RTCStatsMember<T>::StaticType() { \
return type; \
} \
template <> \
bool RTCStatsMember<T>::is_sequence() const { \
return is_seq; \
} \
template <> \
bool RTCStatsMember<T>::is_string() const { \
return is_str; \
} \
template <> \
std::string RTCStatsMember<T>::ValueToString() const { \
RTC_DCHECK(value_.has_value()); \
return to_str; \
} \
template <> \
std::string RTCStatsMember<T>::ValueToJson() const { \
RTC_DCHECK(value_.has_value()); \
return to_json; \
} \
template class RTC_EXPORT_TEMPLATE_DEFINE(RTC_EXPORT) RTCStatsMember<T>
WEBRTC_DEFINE_RTCSTATSMEMBER(bool,
kBool,
false,
false,
rtc::ToString(*value_),
rtc::ToString(*value_));
WEBRTC_DEFINE_RTCSTATSMEMBER(int32_t,
kInt32,
false,
false,
rtc::ToString(*value_),
rtc::ToString(*value_));
WEBRTC_DEFINE_RTCSTATSMEMBER(uint32_t,
kUint32,
false,
false,
rtc::ToString(*value_),
rtc::ToString(*value_));
WEBRTC_DEFINE_RTCSTATSMEMBER(int64_t,
kInt64,
false,
false,
rtc::ToString(*value_),
ToStringAsDouble(*value_));
WEBRTC_DEFINE_RTCSTATSMEMBER(uint64_t,
kUint64,
false,
false,
rtc::ToString(*value_),
ToStringAsDouble(*value_));
WEBRTC_DEFINE_RTCSTATSMEMBER(double,
kDouble,
false,
false,
rtc::ToString(*value_),
ToStringAsDouble(*value_));
WEBRTC_DEFINE_RTCSTATSMEMBER(std::string,
kString,
false,
true,
*value_,
*value_);
WEBRTC_DEFINE_RTCSTATSMEMBER(std::vector<bool>,
kSequenceBool,
true,
false,
VectorToString(*value_),
VectorToString(*value_));
WEBRTC_DEFINE_RTCSTATSMEMBER(std::vector<int32_t>,
kSequenceInt32,
true,
false,
VectorToString(*value_),
VectorToString(*value_));
WEBRTC_DEFINE_RTCSTATSMEMBER(std::vector<uint32_t>,
kSequenceUint32,
true,
false,
VectorToString(*value_),
VectorToString(*value_));
WEBRTC_DEFINE_RTCSTATSMEMBER(std::vector<int64_t>,
kSequenceInt64,
true,
false,
VectorToString(*value_),
VectorToStringAsDouble(*value_));
WEBRTC_DEFINE_RTCSTATSMEMBER(std::vector<uint64_t>,
kSequenceUint64,
true,
false,
VectorToString(*value_),
VectorToStringAsDouble(*value_));
WEBRTC_DEFINE_RTCSTATSMEMBER(std::vector<double>,
kSequenceDouble,
true,
false,
VectorToString(*value_),
VectorToStringAsDouble(*value_));
WEBRTC_DEFINE_RTCSTATSMEMBER(std::vector<std::string>,
kSequenceString,
true,
false,
VectorOfStringsToString(*value_),
VectorOfStringsToString(*value_));
WEBRTC_DEFINE_RTCSTATSMEMBER(rtc_stats_internal::MapStringUint64,
kMapStringUint64,
false,
false,
MapToString(*value_),
MapToStringAsDouble(*value_));
WEBRTC_DEFINE_RTCSTATSMEMBER(rtc_stats_internal::MapStringDouble,
kMapStringDouble,
false,
false,
MapToString(*value_),
MapToStringAsDouble(*value_));
} // namespace webrtc } // namespace webrtc

240
stats/rtc_stats_member.cc Normal file
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@ -0,0 +1,240 @@
/*
* Copyright 2023 The WebRTC Project Authors. All rights reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include "api/stats/rtc_stats_member.h"
#include "rtc_base/arraysize.h"
#include "rtc_base/strings/string_builder.h"
namespace webrtc {
namespace {
// Produces "[a,b,c]". Works for non-vector `RTCStatsMemberInterface::Type`
// types.
template <typename T>
std::string VectorToString(const std::vector<T>& vector) {
rtc::StringBuilder sb;
sb << "[";
const char* separator = "";
for (const T& element : vector) {
sb << separator << rtc::ToString(element);
separator = ",";
}
sb << "]";
return sb.Release();
}
// This overload is required because std::vector<bool> range loops don't
// return references but objects, causing -Wrange-loop-analysis diagnostics.
std::string VectorToString(const std::vector<bool>& vector) {
rtc::StringBuilder sb;
sb << "[";
const char* separator = "";
for (bool element : vector) {
sb << separator << rtc::ToString(element);
separator = ",";
}
sb << "]";
return sb.Release();
}
// Produces "[\"a\",\"b\",\"c\"]". Works for vectors of both const char* and
// std::string element types.
template <typename T>
std::string VectorOfStringsToString(const std::vector<T>& strings) {
rtc::StringBuilder sb;
sb << "[";
const char* separator = "";
for (const T& element : strings) {
sb << separator << "\"" << rtc::ToString(element) << "\"";
separator = ",";
}
sb << "]";
return sb.Release();
}
template <typename T>
std::string MapToString(const std::map<std::string, T>& map) {
rtc::StringBuilder sb;
sb << "{";
const char* separator = "";
for (const auto& element : map) {
sb << separator << rtc::ToString(element.first) << ":"
<< rtc::ToString(element.second);
separator = ",";
}
sb << "}";
return sb.Release();
}
template <typename T>
std::string ToStringAsDouble(const T value) {
// JSON represents numbers as floating point numbers with about 15 decimal
// digits of precision.
char buf[32];
const int len = std::snprintf(&buf[0], arraysize(buf), "%.16g",
static_cast<double>(value));
RTC_DCHECK_LE(len, arraysize(buf));
return std::string(&buf[0], len);
}
template <typename T>
std::string VectorToStringAsDouble(const std::vector<T>& vector) {
rtc::StringBuilder sb;
sb << "[";
const char* separator = "";
for (const T& element : vector) {
sb << separator << ToStringAsDouble<T>(element);
separator = ",";
}
sb << "]";
return sb.Release();
}
template <typename T>
std::string MapToStringAsDouble(const std::map<std::string, T>& map) {
rtc::StringBuilder sb;
sb << "{";
const char* separator = "";
for (const auto& element : map) {
sb << separator << "\"" << rtc::ToString(element.first)
<< "\":" << ToStringAsDouble(element.second);
separator = ",";
}
sb << "}";
return sb.Release();
}
} // namespace
#define WEBRTC_DEFINE_RTCSTATSMEMBER(T, type, is_seq, is_str, to_str, to_json) \
template <> \
RTCStatsMemberInterface::Type RTCStatsMember<T>::StaticType() { \
return type; \
} \
template <> \
bool RTCStatsMember<T>::is_sequence() const { \
return is_seq; \
} \
template <> \
bool RTCStatsMember<T>::is_string() const { \
return is_str; \
} \
template <> \
std::string RTCStatsMember<T>::ValueToString() const { \
RTC_DCHECK(value_.has_value()); \
return to_str; \
} \
template <> \
std::string RTCStatsMember<T>::ValueToJson() const { \
RTC_DCHECK(value_.has_value()); \
return to_json; \
} \
template class RTC_EXPORT_TEMPLATE_DEFINE(RTC_EXPORT) RTCStatsMember<T>
WEBRTC_DEFINE_RTCSTATSMEMBER(bool,
kBool,
false,
false,
rtc::ToString(*value_),
rtc::ToString(*value_));
WEBRTC_DEFINE_RTCSTATSMEMBER(int32_t,
kInt32,
false,
false,
rtc::ToString(*value_),
rtc::ToString(*value_));
WEBRTC_DEFINE_RTCSTATSMEMBER(uint32_t,
kUint32,
false,
false,
rtc::ToString(*value_),
rtc::ToString(*value_));
WEBRTC_DEFINE_RTCSTATSMEMBER(int64_t,
kInt64,
false,
false,
rtc::ToString(*value_),
ToStringAsDouble(*value_));
WEBRTC_DEFINE_RTCSTATSMEMBER(uint64_t,
kUint64,
false,
false,
rtc::ToString(*value_),
ToStringAsDouble(*value_));
WEBRTC_DEFINE_RTCSTATSMEMBER(double,
kDouble,
false,
false,
rtc::ToString(*value_),
ToStringAsDouble(*value_));
WEBRTC_DEFINE_RTCSTATSMEMBER(std::string,
kString,
false,
true,
*value_,
*value_);
WEBRTC_DEFINE_RTCSTATSMEMBER(std::vector<bool>,
kSequenceBool,
true,
false,
VectorToString(*value_),
VectorToString(*value_));
WEBRTC_DEFINE_RTCSTATSMEMBER(std::vector<int32_t>,
kSequenceInt32,
true,
false,
VectorToString(*value_),
VectorToString(*value_));
WEBRTC_DEFINE_RTCSTATSMEMBER(std::vector<uint32_t>,
kSequenceUint32,
true,
false,
VectorToString(*value_),
VectorToString(*value_));
WEBRTC_DEFINE_RTCSTATSMEMBER(std::vector<int64_t>,
kSequenceInt64,
true,
false,
VectorToString(*value_),
VectorToStringAsDouble(*value_));
WEBRTC_DEFINE_RTCSTATSMEMBER(std::vector<uint64_t>,
kSequenceUint64,
true,
false,
VectorToString(*value_),
VectorToStringAsDouble(*value_));
WEBRTC_DEFINE_RTCSTATSMEMBER(std::vector<double>,
kSequenceDouble,
true,
false,
VectorToString(*value_),
VectorToStringAsDouble(*value_));
WEBRTC_DEFINE_RTCSTATSMEMBER(std::vector<std::string>,
kSequenceString,
true,
false,
VectorOfStringsToString(*value_),
VectorOfStringsToString(*value_));
WEBRTC_DEFINE_RTCSTATSMEMBER(rtc_stats_internal::MapStringUint64,
kMapStringUint64,
false,
false,
MapToString(*value_),
MapToStringAsDouble(*value_));
WEBRTC_DEFINE_RTCSTATSMEMBER(rtc_stats_internal::MapStringDouble,
kMapStringDouble,
false,
false,
MapToString(*value_),
MapToStringAsDouble(*value_));
} // namespace webrtc