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webrtc / src / 0de29504ab7ac923401c8e4e154f3b72038dbcc2 / . / talk / app / webrtc / statscollector.cc
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/*
* libjingle
* Copyright 2012, Google Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "talk/app/webrtc/statscollector.h"
#include <utility>
#include <vector>
#include "talk/base/base64.h"
#include "talk/base/scoped_ptr.h"
#include "talk/session/media/channel.h"
namespace webrtc {
// The items below are in alphabetical order.
const char StatsReport::kStatsValueNameActiveConnection[] =
"googActiveConnection";
const char StatsReport::kStatsValueNameActualEncBitrate[] =
"googActualEncBitrate";
const char StatsReport::kStatsValueNameAudioOutputLevel[] = "audioOutputLevel";
const char StatsReport::kStatsValueNameAudioInputLevel[] = "audioInputLevel";
const char StatsReport::kStatsValueNameAvailableReceiveBandwidth[] =
"googAvailableReceiveBandwidth";
const char StatsReport::kStatsValueNameAvailableSendBandwidth[] =
"googAvailableSendBandwidth";
const char StatsReport::kStatsValueNameAvgEncodeMs[] = "googAvgEncodeMs";
const char StatsReport::kStatsValueNameBucketDelay[] = "googBucketDelay";
const char StatsReport::kStatsValueNameBytesReceived[] = "bytesReceived";
const char StatsReport::kStatsValueNameBytesSent[] = "bytesSent";
const char StatsReport::kStatsValueNameBandwidthLimitedResolution[] =
"googBandwidthLimitedResolution";
const char StatsReport::kStatsValueNameCaptureJitterMs[] =
"googCaptureJitterMs";
const char StatsReport::kStatsValueNameCaptureQueueDelayMsPerS[] =
"googCaptureQueueDelayMsPerS";
const char StatsReport::kStatsValueNameChannelId[] = "googChannelId";
const char StatsReport::kStatsValueNameCodecName[] = "googCodecName";
const char StatsReport::kStatsValueNameComponent[] = "googComponent";
const char StatsReport::kStatsValueNameContentName[] = "googContentName";
const char StatsReport::kStatsValueNameCpuLimitedResolution[] =
"googCpuLimitedResolution";
const char StatsReport::kStatsValueNameDer[] = "googDerBase64";
// Echo metrics from the audio processing module.
const char StatsReport::kStatsValueNameEchoCancellationQualityMin[] =
"googEchoCancellationQualityMin";
const char StatsReport::kStatsValueNameEchoDelayMedian[] =
"googEchoCancellationEchoDelayMedian";
const char StatsReport::kStatsValueNameEchoDelayStdDev[] =
"googEchoCancellationEchoDelayStdDev";
const char StatsReport::kStatsValueNameEchoReturnLoss[] =
"googEchoCancellationReturnLoss";
const char StatsReport::kStatsValueNameEchoReturnLossEnhancement[] =
"googEchoCancellationReturnLossEnhancement";
const char StatsReport::kStatsValueNameEncodeUsagePercent[] =
"googEncodeUsagePercent";
const char StatsReport::kStatsValueNameFingerprint[] = "googFingerprint";
const char StatsReport::kStatsValueNameFingerprintAlgorithm[] =
"googFingerprintAlgorithm";
const char StatsReport::kStatsValueNameFirsReceived[] = "googFirsReceived";
const char StatsReport::kStatsValueNameFirsSent[] = "googFirsSent";
const char StatsReport::kStatsValueNameFrameHeightInput[] =
"googFrameHeightInput";
const char StatsReport::kStatsValueNameFrameHeightReceived[] =
"googFrameHeightReceived";
const char StatsReport::kStatsValueNameFrameHeightSent[] =
"googFrameHeightSent";
const char StatsReport::kStatsValueNameFrameRateReceived[] =
"googFrameRateReceived";
const char StatsReport::kStatsValueNameFrameRateDecoded[] =
"googFrameRateDecoded";
const char StatsReport::kStatsValueNameFrameRateOutput[] =
"googFrameRateOutput";
const char StatsReport::kStatsValueNameDecodeMs[] = "googDecodeMs";
const char StatsReport::kStatsValueNameMaxDecodeMs[] = "googMaxDecodeMs";
const char StatsReport::kStatsValueNameCurrentDelayMs[] = "googCurrentDelayMs";
const char StatsReport::kStatsValueNameTargetDelayMs[] = "googTargetDelayMs";
const char StatsReport::kStatsValueNameJitterBufferMs[] = "googJitterBufferMs";
const char StatsReport::kStatsValueNameMinPlayoutDelayMs[] =
"googMinPlayoutDelayMs";
const char StatsReport::kStatsValueNameRenderDelayMs[] = "googRenderDelayMs";
const char StatsReport::kStatsValueNameFrameRateInput[] = "googFrameRateInput";
const char StatsReport::kStatsValueNameFrameRateSent[] = "googFrameRateSent";
const char StatsReport::kStatsValueNameFrameWidthInput[] =
"googFrameWidthInput";
const char StatsReport::kStatsValueNameFrameWidthReceived[] =
"googFrameWidthReceived";
const char StatsReport::kStatsValueNameFrameWidthSent[] = "googFrameWidthSent";
const char StatsReport::kStatsValueNameInitiator[] = "googInitiator";
const char StatsReport::kStatsValueNameIssuerId[] = "googIssuerId";
const char StatsReport::kStatsValueNameJitterReceived[] = "googJitterReceived";
const char StatsReport::kStatsValueNameLocalAddress[] = "googLocalAddress";
const char StatsReport::kStatsValueNameLocalCandidateType[] =
"googLocalCandidateType";
const char StatsReport::kStatsValueNameLocalCertificateId[] =
"googLocalCertificateId";
const char StatsReport::kStatsValueNameNacksReceived[] = "googNacksReceived";
const char StatsReport::kStatsValueNameNacksSent[] = "googNacksSent";
const char StatsReport::kStatsValueNameNetEqExpandRate[] =
"googNetEqExpandRate";
const char StatsReport::kStatsValueNamePacketsReceived[] = "packetsReceived";
const char StatsReport::kStatsValueNamePacketsSent[] = "packetsSent";
const char StatsReport::kStatsValueNamePacketsLost[] = "packetsLost";
const char StatsReport::kStatsValueNameReadable[] = "googReadable";
const char StatsReport::kStatsValueNameRemoteAddress[] = "googRemoteAddress";
const char StatsReport::kStatsValueNameRemoteCandidateType[] =
"googRemoteCandidateType";
const char StatsReport::kStatsValueNameRemoteCertificateId[] =
"googRemoteCertificateId";
const char StatsReport::kStatsValueNameRetransmitBitrate[] =
"googRetransmitBitrate";
const char StatsReport::kStatsValueNameRtt[] = "googRtt";
const char StatsReport::kStatsValueNameSsrc[] = "ssrc";
const char StatsReport::kStatsValueNameTargetEncBitrate[] =
"googTargetEncBitrate";
const char StatsReport::kStatsValueNameTransmitBitrate[] =
"googTransmitBitrate";
const char StatsReport::kStatsValueNameTransportId[] = "transportId";
const char StatsReport::kStatsValueNameTransportType[] = "googTransportType";
const char StatsReport::kStatsValueNameTrackId[] = "googTrackId";
const char StatsReport::kStatsValueNameTypingNoiseState[] =
"googTypingNoiseState";
const char StatsReport::kStatsValueNameViewLimitedResolution[] =
"googViewLimitedResolution";
const char StatsReport::kStatsValueNameWritable[] = "googWritable";
const char StatsReport::kStatsReportTypeSession[] = "googLibjingleSession";
const char StatsReport::kStatsReportTypeBwe[] = "VideoBwe";
const char StatsReport::kStatsReportTypeRemoteSsrc[] = "remoteSsrc";
const char StatsReport::kStatsReportTypeSsrc[] = "ssrc";
const char StatsReport::kStatsReportTypeTrack[] = "googTrack";
const char StatsReport::kStatsReportTypeIceCandidate[] = "iceCandidate";
const char StatsReport::kStatsReportTypeTransport[] = "googTransport";
const char StatsReport::kStatsReportTypeComponent[] = "googComponent";
const char StatsReport::kStatsReportTypeCandidatePair[] = "googCandidatePair";
const char StatsReport::kStatsReportTypeCertificate[] = "googCertificate";
const char StatsReport::kStatsReportVideoBweId[] = "bweforvideo";
// Implementations of functions in statstypes.h
void StatsReport::AddValue(const std::string& name, const std::string& value) {
Value temp;
temp.name = name;
temp.value = value;
values.push_back(temp);
}
void StatsReport::AddValue(const std::string& name, int64 value) {
AddValue(name, talk_base::ToString<int64>(value));
}
void StatsReport::AddBoolean(const std::string& name, bool value) {
AddValue(name, value ? "true" : "false");
}
namespace {
typedef std::map<std::string, StatsReport> StatsMap;
std::string StatsId(const std::string& type, const std::string& id) {
return type + "_" + id;
}
bool ExtractValueFromReport(
const StatsReport& report,
const std::string& name,
std::string* value) {
StatsReport::Values::const_iterator it = report.values.begin();
for (; it != report.values.end(); ++it) {
if (it->name == name) {
*value = it->value;
return true;
}
}
return false;
}
template <class TrackVector>
void CreateTrackReports(const TrackVector& tracks, StatsMap* reports) {
for (size_t j = 0; j < tracks.size(); ++j) {
webrtc::MediaStreamTrackInterface* track = tracks[j];
// Adds an empty track report.
StatsReport report;
report.type = StatsReport::kStatsReportTypeTrack;
report.id = StatsId(StatsReport::kStatsReportTypeTrack, track->id());
report.AddValue(StatsReport::kStatsValueNameTrackId,
track->id());
(*reports)[report.id] = report;
}
}
void ExtractStats(const cricket::VoiceReceiverInfo& info, StatsReport* report) {
report->AddValue(StatsReport::kStatsValueNameAudioOutputLevel,
info.audio_level);
report->AddValue(StatsReport::kStatsValueNameBytesReceived,
info.bytes_rcvd);
report->AddValue(StatsReport::kStatsValueNameJitterReceived,
info.jitter_ms);
report->AddValue(StatsReport::kStatsValueNameNetEqExpandRate,
talk_base::ToString<float>(info.expand_rate));
report->AddValue(StatsReport::kStatsValueNamePacketsReceived,
info.packets_rcvd);
report->AddValue(StatsReport::kStatsValueNamePacketsLost,
info.packets_lost);
}
void ExtractStats(const cricket::VoiceSenderInfo& info, StatsReport* report) {
report->AddValue(StatsReport::kStatsValueNameAudioInputLevel,
info.audio_level);
report->AddValue(StatsReport::kStatsValueNameBytesSent,
info.bytes_sent);
report->AddValue(StatsReport::kStatsValueNamePacketsSent,
info.packets_sent);
report->AddValue(StatsReport::kStatsValueNameJitterReceived,
info.jitter_ms);
report->AddValue(StatsReport::kStatsValueNameRtt, info.rtt_ms);
report->AddValue(StatsReport::kStatsValueNameEchoCancellationQualityMin,
talk_base::ToString<float>(info.aec_quality_min));
report->AddValue(StatsReport::kStatsValueNameEchoDelayMedian,
info.echo_delay_median_ms);
report->AddValue(StatsReport::kStatsValueNameEchoDelayStdDev,
info.echo_delay_std_ms);
report->AddValue(StatsReport::kStatsValueNameEchoReturnLoss,
info.echo_return_loss);
report->AddValue(StatsReport::kStatsValueNameEchoReturnLossEnhancement,
info.echo_return_loss_enhancement);
report->AddValue(StatsReport::kStatsValueNameCodecName, info.codec_name);
report->AddBoolean(StatsReport::kStatsValueNameTypingNoiseState,
info.typing_noise_detected);
}
void ExtractStats(const cricket::VideoReceiverInfo& info, StatsReport* report) {
report->AddValue(StatsReport::kStatsValueNameBytesReceived,
info.bytes_rcvd);
report->AddValue(StatsReport::kStatsValueNamePacketsReceived,
info.packets_rcvd);
report->AddValue(StatsReport::kStatsValueNamePacketsLost,
info.packets_lost);
report->AddValue(StatsReport::kStatsValueNameFirsSent,
info.firs_sent);
report->AddValue(StatsReport::kStatsValueNameNacksSent,
info.nacks_sent);
report->AddValue(StatsReport::kStatsValueNameFrameWidthReceived,
info.frame_width);
report->AddValue(StatsReport::kStatsValueNameFrameHeightReceived,
info.frame_height);
report->AddValue(StatsReport::kStatsValueNameFrameRateReceived,
info.framerate_rcvd);
report->AddValue(StatsReport::kStatsValueNameFrameRateDecoded,
info.framerate_decoded);
report->AddValue(StatsReport::kStatsValueNameFrameRateOutput,
info.framerate_output);
report->AddValue(StatsReport::kStatsValueNameDecodeMs,
info.decode_ms);
report->AddValue(StatsReport::kStatsValueNameMaxDecodeMs,
info.max_decode_ms);
report->AddValue(StatsReport::kStatsValueNameCurrentDelayMs,
info.current_delay_ms);
report->AddValue(StatsReport::kStatsValueNameTargetDelayMs,
info.target_delay_ms);
report->AddValue(StatsReport::kStatsValueNameJitterBufferMs,
info.jitter_buffer_ms);
report->AddValue(StatsReport::kStatsValueNameMinPlayoutDelayMs,
info.min_playout_delay_ms);
report->AddValue(StatsReport::kStatsValueNameRenderDelayMs,
info.render_delay_ms);
}
void ExtractStats(const cricket::VideoSenderInfo& info, StatsReport* report) {
report->AddValue(StatsReport::kStatsValueNameBytesSent,
info.bytes_sent);
report->AddValue(StatsReport::kStatsValueNamePacketsSent,
info.packets_sent);
report->AddValue(StatsReport::kStatsValueNameFirsReceived,
info.firs_rcvd);
report->AddValue(StatsReport::kStatsValueNameNacksReceived,
info.nacks_rcvd);
report->AddValue(StatsReport::kStatsValueNameFrameWidthInput,
info.input_frame_width);
report->AddValue(StatsReport::kStatsValueNameFrameHeightInput,
info.input_frame_height);
report->AddValue(StatsReport::kStatsValueNameFrameWidthSent,
info.send_frame_width);
report->AddValue(StatsReport::kStatsValueNameFrameHeightSent,
info.send_frame_height);
report->AddValue(StatsReport::kStatsValueNameFrameRateInput,
info.framerate_input);
report->AddValue(StatsReport::kStatsValueNameFrameRateSent,
info.framerate_sent);
report->AddValue(StatsReport::kStatsValueNameRtt, info.rtt_ms);
report->AddValue(StatsReport::kStatsValueNameCodecName, info.codec_name);
report->AddBoolean(StatsReport::kStatsValueNameCpuLimitedResolution,
(info.adapt_reason & 0x1) > 0);
report->AddBoolean(StatsReport::kStatsValueNameBandwidthLimitedResolution,
(info.adapt_reason & 0x2) > 0);
report->AddBoolean(StatsReport::kStatsValueNameViewLimitedResolution,
(info.adapt_reason & 0x4) > 0);
report->AddValue(StatsReport::kStatsValueNameAvgEncodeMs, info.avg_encode_ms);
report->AddValue(StatsReport::kStatsValueNameCaptureJitterMs,
info.capture_jitter_ms);
report->AddValue(StatsReport::kStatsValueNameCaptureQueueDelayMsPerS,
info.capture_queue_delay_ms_per_s);
report->AddValue(StatsReport::kStatsValueNameEncodeUsagePercent,
info.encode_usage_percent);
}
void ExtractStats(const cricket::BandwidthEstimationInfo& info,
double stats_gathering_started,
StatsReport* report) {
report->id = StatsReport::kStatsReportVideoBweId;
report->type = StatsReport::kStatsReportTypeBwe;
// Clear out stats from previous GatherStats calls if any.
if (report->timestamp != stats_gathering_started) {
report->values.clear();
report->timestamp = stats_gathering_started;
}
report->AddValue(StatsReport::kStatsValueNameAvailableSendBandwidth,
info.available_send_bandwidth);
report->AddValue(StatsReport::kStatsValueNameAvailableReceiveBandwidth,
info.available_recv_bandwidth);
report->AddValue(StatsReport::kStatsValueNameTargetEncBitrate,
info.target_enc_bitrate);
report->AddValue(StatsReport::kStatsValueNameActualEncBitrate,
info.actual_enc_bitrate);
report->AddValue(StatsReport::kStatsValueNameRetransmitBitrate,
info.retransmit_bitrate);
report->AddValue(StatsReport::kStatsValueNameTransmitBitrate,
info.transmit_bitrate);
report->AddValue(StatsReport::kStatsValueNameBucketDelay,
info.bucket_delay);
}
void ExtractRemoteStats(const cricket::MediaSenderInfo& info,
StatsReport* report) {
report->timestamp = info.remote_stats[0].timestamp;
// TODO(hta): Extract some stats here.
}
void ExtractRemoteStats(const cricket::MediaReceiverInfo& info,
StatsReport* report) {
report->timestamp = info.remote_stats[0].timestamp;
// TODO(hta): Extract some stats here.
}
// Template to extract stats from a data vector.
// In order to use the template, the functions that are called from it,
// ExtractStats and ExtractRemoteStats, must be defined and overloaded
// for each type.
template<typename T>
void ExtractStatsFromList(const std::vector<T>& data,
const std::string& transport_id,
StatsCollector* collector) {
typename std::vector<T>::const_iterator it = data.begin();
for (; it != data.end(); ++it) {
std::string id;
uint32 ssrc = it->ssrc();
// Each object can result in 2 objects, a local and a remote object.
// TODO(hta): Handle the case of multiple SSRCs per object.
StatsReport* report = collector->PrepareLocalReport(ssrc, transport_id);
if (!report) {
continue;
}
ExtractStats(*it, report);
if (it->remote_stats.size() > 0) {
report = collector->PrepareRemoteReport(ssrc, transport_id);
if (!report) {
continue;
}
ExtractRemoteStats(*it, report);
}
}
};
} // namespace
StatsCollector::StatsCollector()
: session_(NULL), stats_gathering_started_(0) {
}
// Adds a MediaStream with tracks that can be used as a |selector| in a call
// to GetStats.
void StatsCollector::AddStream(MediaStreamInterface* stream) {
ASSERT(stream != NULL);
CreateTrackReports<AudioTrackVector>(stream->GetAudioTracks(),
&reports_);
CreateTrackReports<VideoTrackVector>(stream->GetVideoTracks(),
&reports_);
}
bool StatsCollector::GetStats(MediaStreamTrackInterface* track,
StatsReports* reports) {
ASSERT(reports != NULL);
reports->clear();
StatsMap::iterator it;
if (!track) {
for (it = reports_.begin(); it != reports_.end(); ++it) {
reports->push_back(it->second);
}
return true;
}
it = reports_.find(StatsId(StatsReport::kStatsReportTypeSession,
session_->id()));
if (it != reports_.end()) {
reports->push_back(it->second);
}
it = reports_.find(StatsId(StatsReport::kStatsReportTypeTrack, track->id()));
if (it == reports_.end()) {
LOG(LS_WARNING) << "No StatsReport is available for "<< track->id();
return false;
}
reports->push_back(it->second);
std::string track_id;
for (it = reports_.begin(); it != reports_.end(); ++it) {
if (it->second.type != StatsReport::kStatsReportTypeSsrc) {
continue;
}
if (ExtractValueFromReport(it->second,
StatsReport::kStatsValueNameTrackId,
&track_id)) {
if (track_id == track->id()) {
reports->push_back(it->second);
}
}
}
return true;
}
void StatsCollector::UpdateStats() {
double time_now = GetTimeNow();
// Calls to UpdateStats() that occur less than kMinGatherStatsPeriod number of
// ms apart will be ignored.
const double kMinGatherStatsPeriod = 50;
if (stats_gathering_started_ + kMinGatherStatsPeriod > time_now) {
return;
}
stats_gathering_started_ = time_now;
if (session_) {
ExtractSessionInfo();
ExtractVoiceInfo();
ExtractVideoInfo();
}
}
StatsReport* StatsCollector::PrepareLocalReport(
uint32 ssrc,
const std::string& transport_id) {
std::string ssrc_id = talk_base::ToString<uint32>(ssrc);
StatsMap::iterator it = reports_.find(StatsId(
StatsReport::kStatsReportTypeSsrc, ssrc_id));
std::string track_id;
if (it == reports_.end()) {
if (!session()->GetTrackIdBySsrc(ssrc, &track_id)) {
LOG(LS_WARNING) << "The SSRC " << ssrc
<< " is not associated with a track";
return NULL;
}
} else {
// Keeps the old track id since we want to report the stats for inactive
// tracks.
ExtractValueFromReport(it->second,
StatsReport::kStatsValueNameTrackId,
&track_id);
}
StatsReport* report = GetOrCreateReport(StatsReport::kStatsReportTypeSsrc,
ssrc_id);
// Clear out stats from previous GatherStats calls if any.
if (report->timestamp != stats_gathering_started_) {
report->values.clear();
report->timestamp = stats_gathering_started_;
}
report->AddValue(StatsReport::kStatsValueNameSsrc, ssrc_id);
report->AddValue(StatsReport::kStatsValueNameTrackId, track_id);
// Add the mapping of SSRC to transport.
report->AddValue(StatsReport::kStatsValueNameTransportId,
transport_id);
return report;
}
StatsReport* StatsCollector::PrepareRemoteReport(
uint32 ssrc,
const std::string& transport_id) {
std::string ssrc_id = talk_base::ToString<uint32>(ssrc);
StatsMap::iterator it = reports_.find(StatsId(
StatsReport::kStatsReportTypeRemoteSsrc, ssrc_id));
std::string track_id;
if (it == reports_.end()) {
if (!session()->GetTrackIdBySsrc(ssrc, &track_id)) {
LOG(LS_WARNING) << "The SSRC " << ssrc
<< " is not associated with a track";
return NULL;
}
} else {
// Keeps the old track id since we want to report the stats for inactive
// tracks.
ExtractValueFromReport(it->second,
StatsReport::kStatsValueNameTrackId,
&track_id);
}
StatsReport* report = GetOrCreateReport(
StatsReport::kStatsReportTypeRemoteSsrc, ssrc_id);
// Clear out stats from previous GatherStats calls if any.
// The timestamp will be added later. Zero it for debugging.
report->values.clear();
report->timestamp = 0;
report->AddValue(StatsReport::kStatsValueNameSsrc, ssrc_id);
report->AddValue(StatsReport::kStatsValueNameTrackId, track_id);
// Add the mapping of SSRC to transport.
report->AddValue(StatsReport::kStatsValueNameTransportId,
transport_id);
return report;
}
std::string StatsCollector::AddOneCertificateReport(
const talk_base::SSLCertificate* cert, const std::string& issuer_id) {
// TODO(bemasc): Move this computation to a helper class that caches these
// values to reduce CPU use in GetStats. This will require adding a fast
// SSLCertificate::Equals() method to detect certificate changes.
std::string digest_algorithm;
if (!cert->GetSignatureDigestAlgorithm(&digest_algorithm))
return std::string();
talk_base::scoped_ptr<talk_base::SSLFingerprint> ssl_fingerprint(
talk_base::SSLFingerprint::Create(digest_algorithm, cert));
std::string fingerprint = ssl_fingerprint->GetRfc4572Fingerprint();
talk_base::Buffer der_buffer;
cert->ToDER(&der_buffer);
std::string der_base64;
talk_base::Base64::EncodeFromArray(
der_buffer.data(), der_buffer.length(), &der_base64);
StatsReport report;
report.type = StatsReport::kStatsReportTypeCertificate;
report.id = StatsId(report.type, fingerprint);
report.timestamp = stats_gathering_started_;
report.AddValue(StatsReport::kStatsValueNameFingerprint, fingerprint);
report.AddValue(StatsReport::kStatsValueNameFingerprintAlgorithm,
digest_algorithm);
report.AddValue(StatsReport::kStatsValueNameDer, der_base64);
if (!issuer_id.empty())
report.AddValue(StatsReport::kStatsValueNameIssuerId, issuer_id);
reports_[report.id] = report;
return report.id;
}
std::string StatsCollector::AddCertificateReports(
const talk_base::SSLCertificate* cert) {
// Produces a chain of StatsReports representing this certificate and the rest
// of its chain, and adds those reports to |reports_|. The return value is
// the id of the leaf report. The provided cert must be non-null, so at least
// one report will always be provided and the returned string will never be
// empty.
ASSERT(cert != NULL);
std::string issuer_id;
talk_base::scoped_ptr<talk_base::SSLCertChain> chain;
if (cert->GetChain(chain.accept())) {
// This loop runs in reverse, i.e. from root to leaf, so that each
// certificate's issuer's report ID is known before the child certificate's
// report is generated. The root certificate does not have an issuer ID
// value.
for (ptrdiff_t i = chain->GetSize() - 1; i >= 0; --i) {
const talk_base::SSLCertificate& cert_i = chain->Get(i);
issuer_id = AddOneCertificateReport(&cert_i, issuer_id);
}
}
// Add the leaf certificate.
return AddOneCertificateReport(cert, issuer_id);
}
void StatsCollector::ExtractSessionInfo() {
// Extract information from the base session.
StatsReport report;
report.id = StatsId(StatsReport::kStatsReportTypeSession, session_->id());
report.type = StatsReport::kStatsReportTypeSession;
report.timestamp = stats_gathering_started_;
report.values.clear();
report.AddBoolean(StatsReport::kStatsValueNameInitiator,
session_->initiator());
reports_[report.id] = report;
cricket::SessionStats stats;
if (session_->GetStats(&stats)) {
// Store the proxy map away for use in SSRC reporting.
proxy_to_transport_ = stats.proxy_to_transport;
for (cricket::TransportStatsMap::iterator transport_iter
= stats.transport_stats.begin();
transport_iter != stats.transport_stats.end(); ++transport_iter) {
// Attempt to get a copy of the certificates from the transport and
// expose them in stats reports. All channels in a transport share the
// same local and remote certificates.
std::string local_cert_report_id, remote_cert_report_id;
cricket::Transport* transport =
session_->GetTransport(transport_iter->second.content_name);
if (transport) {
talk_base::scoped_ptr<talk_base::SSLIdentity> identity;
if (transport->GetIdentity(identity.accept()))
local_cert_report_id = AddCertificateReports(
&(identity->certificate()));
talk_base::scoped_ptr<talk_base::SSLCertificate> cert;
if (transport->GetRemoteCertificate(cert.accept()))
remote_cert_report_id = AddCertificateReports(cert.get());
}
for (cricket::TransportChannelStatsList::iterator channel_iter
= transport_iter->second.channel_stats.begin();
channel_iter != transport_iter->second.channel_stats.end();
++channel_iter) {
StatsReport channel_report;
std::ostringstream ostc;
ostc << "Channel-" << transport_iter->second.content_name
<< "-" << channel_iter->component;
channel_report.id = ostc.str();
channel_report.type = StatsReport::kStatsReportTypeComponent;
channel_report.timestamp = stats_gathering_started_;
channel_report.AddValue(StatsReport::kStatsValueNameComponent,
channel_iter->component);
if (!local_cert_report_id.empty())
channel_report.AddValue(
StatsReport::kStatsValueNameLocalCertificateId,
local_cert_report_id);
if (!remote_cert_report_id.empty())
channel_report.AddValue(
StatsReport::kStatsValueNameRemoteCertificateId,
remote_cert_report_id);
reports_[channel_report.id] = channel_report;
for (size_t i = 0;
i < channel_iter->connection_infos.size();
++i) {
StatsReport report;
const cricket::ConnectionInfo& info
= channel_iter->connection_infos[i];
std::ostringstream ost;
ost << "Conn-" << transport_iter->first << "-"
<< channel_iter->component << "-" << i;
report.id = ost.str();
report.type = StatsReport::kStatsReportTypeCandidatePair;
report.timestamp = stats_gathering_started_;
// Link from connection to its containing channel.
report.AddValue(StatsReport::kStatsValueNameChannelId,
channel_report.id);
report.AddValue(StatsReport::kStatsValueNameBytesSent,
info.sent_total_bytes);
report.AddValue(StatsReport::kStatsValueNameBytesReceived,
info.recv_total_bytes);
report.AddBoolean(StatsReport::kStatsValueNameWritable,
info.writable);
report.AddBoolean(StatsReport::kStatsValueNameReadable,
info.readable);
report.AddBoolean(StatsReport::kStatsValueNameActiveConnection,
info.best_connection);
report.AddValue(StatsReport::kStatsValueNameLocalAddress,
info.local_candidate.address().ToString());
report.AddValue(StatsReport::kStatsValueNameRemoteAddress,
info.remote_candidate.address().ToString());
report.AddValue(StatsReport::kStatsValueNameRtt, info.rtt);
report.AddValue(StatsReport::kStatsValueNameTransportType,
info.local_candidate.protocol());
report.AddValue(StatsReport::kStatsValueNameLocalCandidateType,
info.local_candidate.type());
report.AddValue(StatsReport::kStatsValueNameRemoteCandidateType,
info.remote_candidate.type());
reports_[report.id] = report;
}
}
}
}
}
void StatsCollector::ExtractVoiceInfo() {
if (!session_->voice_channel()) {
return;
}
cricket::VoiceMediaInfo voice_info;
if (!session_->voice_channel()->GetStats(&voice_info)) {
LOG(LS_ERROR) << "Failed to get voice channel stats.";
return;
}
std::string transport_id;
if (!GetTransportIdFromProxy(session_->voice_channel()->content_name(),
&transport_id)) {
LOG(LS_ERROR) << "Failed to get transport name for proxy "
<< session_->voice_channel()->content_name();
return;
}
ExtractStatsFromList(voice_info.receivers, transport_id, this);
ExtractStatsFromList(voice_info.senders, transport_id, this);
}
void StatsCollector::ExtractVideoInfo() {
if (!session_->video_channel()) {
return;
}
cricket::VideoMediaInfo video_info;
if (!session_->video_channel()->GetStats(&video_info)) {
LOG(LS_ERROR) << "Failed to get video channel stats.";
return;
}
std::string transport_id;
if (!GetTransportIdFromProxy(session_->video_channel()->content_name(),
&transport_id)) {
LOG(LS_ERROR) << "Failed to get transport name for proxy "
<< session_->video_channel()->content_name();
return;
}
ExtractStatsFromList(video_info.receivers, transport_id, this);
ExtractStatsFromList(video_info.senders, transport_id, this);
if (video_info.bw_estimations.size() != 1) {
LOG(LS_ERROR) << "BWEs count: " << video_info.bw_estimations.size();
} else {
StatsReport* report = &reports_[StatsReport::kStatsReportVideoBweId];
ExtractStats(
video_info.bw_estimations[0], stats_gathering_started_, report);
}
}
double StatsCollector::GetTimeNow() {
return timing_.WallTimeNow() * talk_base::kNumMillisecsPerSec;
}
bool StatsCollector::GetTransportIdFromProxy(const std::string& proxy,
std::string* transport) {
// TODO(hta): Remove handling of empty proxy name once tests do not use it.
if (proxy.empty()) {
transport->clear();
return true;
}
if (proxy_to_transport_.find(proxy) == proxy_to_transport_.end()) {
LOG(LS_ERROR) << "No transport ID mapping for " << proxy;
return false;
}
std::ostringstream ost;
// Component 1 is always used for RTP.
ost << "Channel-" << proxy_to_transport_[proxy] << "-1";
*transport = ost.str();
return true;
}
StatsReport* StatsCollector::GetOrCreateReport(const std::string& type,
const std::string& id) {
std::string statsid = StatsId(type, id);
StatsReport* report = NULL;
std::map<std::string, StatsReport>::iterator it = reports_.find(statsid);
if (it == reports_.end()) {
report = &reports_[statsid]; // Create new element.
report->id = statsid;
report->type = type;
} else {
report = &(it->second);
}
return report;
}
} // namespace webrtc