/*
* Copyright 2016 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.h"
#include <cstdio>
#include "rtc_base/arraysize.h"
#include "rtc_base/string_encode.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();
}
// 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 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();
}
} // namespace
bool RTCStats::operator==(const RTCStats& other) const {
if (type() != other.type() || id() != other.id())
return false;
std::vector<const RTCStatsMemberInterface*> members = Members();
std::vector<const RTCStatsMemberInterface*> other_members = other.Members();
RTC_DCHECK_EQ(members.size(), other_members.size());
for (size_t i = 0; i < members.size(); ++i) {
const RTCStatsMemberInterface* member = members[i];
const RTCStatsMemberInterface* other_member = other_members[i];
RTC_DCHECK_EQ(member->type(), other_member->type());
RTC_DCHECK_EQ(member->name(), other_member->name());
if (*member != *other_member)
return false;
}
return true;
}
bool RTCStats::operator!=(const RTCStats& other) const {
return !(*this == other);
}
std::string RTCStats::ToJson() const {
rtc::StringBuilder sb;
sb << "{\"type\":\"" << type()
<< "\","
"\"id\":\""
<< id_
<< "\","
"\"timestamp\":"
<< timestamp_us_;
for (const RTCStatsMemberInterface* member : Members()) {
if (member->is_defined()) {
sb << ",\"" << member->name() << "\":";
if (member->is_string())
sb << "\"" << member->ValueToJson() << "\"";
else
sb << member->ValueToJson();
}
}
sb << "}";
return sb.Release();
}
std::vector<const RTCStatsMemberInterface*> RTCStats::Members() const {
return MembersOfThisObjectAndAncestors(0);
}
std::vector<const RTCStatsMemberInterface*>
RTCStats::MembersOfThisObjectAndAncestors(size_t additional_capacity) const {
std::vector<const RTCStatsMemberInterface*> members;
members.reserve(additional_capacity);
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(is_defined_); \
return to_str; \
} \
template <> \
std::string RTCStatsMember<T>::ValueToJson() const { \
RTC_DCHECK(is_defined_); \
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_));
template class RTC_EXPORT_TEMPLATE_DEFINE(RTC_EXPORT)
RTCNonStandardStatsMember<bool>;
template class RTC_EXPORT_TEMPLATE_DEFINE(RTC_EXPORT)
RTCNonStandardStatsMember<int32_t>;
template class RTC_EXPORT_TEMPLATE_DEFINE(RTC_EXPORT)
RTCNonStandardStatsMember<uint32_t>;
template class RTC_EXPORT_TEMPLATE_DEFINE(RTC_EXPORT)
RTCNonStandardStatsMember<int64_t>;
template class RTC_EXPORT_TEMPLATE_DEFINE(RTC_EXPORT)
RTCNonStandardStatsMember<uint64_t>;
template class RTC_EXPORT_TEMPLATE_DEFINE(RTC_EXPORT)
RTCNonStandardStatsMember<double>;
template class RTC_EXPORT_TEMPLATE_DEFINE(RTC_EXPORT)
RTCNonStandardStatsMember<std::string>;
template class RTC_EXPORT_TEMPLATE_DEFINE(RTC_EXPORT)
RTCNonStandardStatsMember<std::vector<bool>>;
template class RTC_EXPORT_TEMPLATE_DEFINE(RTC_EXPORT)
RTCNonStandardStatsMember<std::vector<int32_t>>;
template class RTC_EXPORT_TEMPLATE_DEFINE(RTC_EXPORT)
RTCNonStandardStatsMember<std::vector<uint32_t>>;
template class RTC_EXPORT_TEMPLATE_DEFINE(RTC_EXPORT)
RTCNonStandardStatsMember<std::vector<int64_t>>;
template class RTC_EXPORT_TEMPLATE_DEFINE(RTC_EXPORT)
RTCNonStandardStatsMember<std::vector<uint64_t>>;
template class RTC_EXPORT_TEMPLATE_DEFINE(RTC_EXPORT)
RTCNonStandardStatsMember<std::vector<double>>;
template class RTC_EXPORT_TEMPLATE_DEFINE(RTC_EXPORT)
RTCNonStandardStatsMember<std::vector<std::string>>;
} // namespace webrtc