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This implements the stats selection algorithm[1] in RTCStatsCollector by obtaining the selector's inbound-rtp/outbound-rtp stats and performing the stats traversal algorithm (TakeReferencedStats)[2] on a copy of the cached report with the rtps as starting point. Changes: - RTCStatsCollector.GetStatsReport() with selector arguments added. - RequestInfo added, "callbacks_" is replaced by "requests_". - RTCStatsReport.Copy() added. - New test for sender selector and receiver selector, RTCStatsCollectorTest.GetStatsWithSelector. [1] https://w3c.github.io/webrtc-pc/#dfn-stats-selection-algorithm [2] https://cs.chromium.org/chromium/src/third_party/webrtc/pc/rtcstatstraversal.h Bug: chromium:680172 Change-Id: I9eff00738a1f24c94c9c8ecd13c1304452e962cf Reviewed-on: https://webrtc-review.googlesource.com/62141 Reviewed-by: Harald Alvestrand <hta@webrtc.org> Reviewed-by: Taylor Brandstetter <deadbeef@webrtc.org> Commit-Queue: Henrik Boström <hbos@webrtc.org> Cr-Commit-Position: refs/heads/master@{#22499}
104 lines
3.3 KiB
C++
104 lines
3.3 KiB
C++
/*
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* Copyright 2016 The WebRTC Project Authors. All rights reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef API_STATS_RTCSTATSREPORT_H_
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#define API_STATS_RTCSTATSREPORT_H_
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#include <map>
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#include <memory>
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#include <string>
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#include <vector>
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#include "api/stats/rtcstats.h"
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#include "rtc_base/refcount.h"
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#include "rtc_base/refcountedobject.h"
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#include "rtc_base/scoped_ref_ptr.h"
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namespace webrtc {
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// A collection of stats.
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// This is accessible as a map from |RTCStats::id| to |RTCStats|.
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class RTCStatsReport : public rtc::RefCountInterface {
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public:
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typedef std::map<std::string, std::unique_ptr<const RTCStats>> StatsMap;
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class ConstIterator {
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public:
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ConstIterator(const ConstIterator&& other);
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~ConstIterator();
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ConstIterator& operator++();
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ConstIterator& operator++(int);
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const RTCStats& operator*() const;
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const RTCStats* operator->() const;
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bool operator==(const ConstIterator& other) const;
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bool operator!=(const ConstIterator& other) const;
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private:
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friend class RTCStatsReport;
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ConstIterator(const rtc::scoped_refptr<const RTCStatsReport>& report,
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StatsMap::const_iterator it);
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// Reference report to make sure it is kept alive.
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rtc::scoped_refptr<const RTCStatsReport> report_;
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StatsMap::const_iterator it_;
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};
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// TODO(hbos): Remove "= 0" once Chromium unittest has been updated to call
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// with a parameter. crbug.com/627816
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static rtc::scoped_refptr<RTCStatsReport> Create(int64_t timestamp_us = 0);
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explicit RTCStatsReport(int64_t timestamp_us);
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RTCStatsReport(const RTCStatsReport& other) = delete;
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rtc::scoped_refptr<RTCStatsReport> Copy() const;
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int64_t timestamp_us() const { return timestamp_us_; }
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void AddStats(std::unique_ptr<const RTCStats> stats);
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const RTCStats* Get(const std::string& id) const;
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size_t size() const { return stats_.size(); }
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// Removes the stats object from the report, returning ownership of it or null
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// if there is no object with |id|.
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std::unique_ptr<const RTCStats> Take(const std::string& id);
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// Takes ownership of all the stats in |victim|, leaving it empty.
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void TakeMembersFrom(rtc::scoped_refptr<RTCStatsReport> victim);
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// Stats iterators. Stats are ordered lexicographically on |RTCStats::id|.
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ConstIterator begin() const;
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ConstIterator end() const;
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// Gets the subset of stats that are of type |T|, where |T| is any class
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// descending from |RTCStats|.
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template<typename T>
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std::vector<const T*> GetStatsOfType() const {
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std::vector<const T*> stats_of_type;
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for (const RTCStats& stats : *this) {
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if (stats.type() == T::kType)
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stats_of_type.push_back(&stats.cast_to<const T>());
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}
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return stats_of_type;
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}
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// Creates a JSON readable string representation of the report,
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// listing all of its stats objects.
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std::string ToJson() const;
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friend class rtc::RefCountedObject<RTCStatsReport>;
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private:
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~RTCStatsReport() override;
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int64_t timestamp_us_;
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StatsMap stats_;
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};
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} // namespace webrtc
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#endif // API_STATS_RTCSTATSREPORT_H_
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