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83 lines
2.4 KiB
C++
83 lines
2.4 KiB
C++
// Copyright 2016 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef NET_NQE_NETWORK_QUALITY_OBSERVATION_H_
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#define NET_NQE_NETWORK_QUALITY_OBSERVATION_H_
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#include <stdint.h>
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#include <vector>
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#include "base/optional.h"
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#include "base/time/time.h"
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#include "net/base/net_export.h"
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#include "net/nqe/network_quality_estimator_util.h"
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#include "net/nqe/network_quality_observation_source.h"
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namespace net {
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namespace nqe {
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namespace internal {
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// Records observations of network quality metrics (such as round trip time
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// or throughput), along with the time the observation was made. Observations
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// can be made at several places in the network stack, thus the observation
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// source is provided as well.
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class NET_EXPORT_PRIVATE Observation {
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public:
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Observation(int32_t value,
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base::TimeTicks timestamp,
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const base::Optional<int32_t>& signal_strength,
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NetworkQualityObservationSource source);
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Observation(int32_t value,
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base::TimeTicks timestamp,
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const base::Optional<int32_t>& signal_strength,
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NetworkQualityObservationSource source,
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const base::Optional<IPHash>& host);
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Observation(const Observation& other);
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Observation& operator=(const Observation& other);
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~Observation();
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// Value of the observation.
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int32_t value() const { return value_; }
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// Time when the observation was taken.
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base::TimeTicks timestamp() const { return timestamp_; }
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// Signal strength when the observation was taken.
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base::Optional<int32_t> signal_strength() const { return signal_strength_; }
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// The source of the observation.
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NetworkQualityObservationSource source() const { return source_; }
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// A unique identifier for the remote host which was used for the measurement.
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base::Optional<IPHash> host() const { return host_; }
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// Returns the observation categories to which this observation belongs to.
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std::vector<ObservationCategory> GetObservationCategories() const;
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private:
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int32_t value_;
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base::TimeTicks timestamp_;
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base::Optional<int32_t> signal_strength_;
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NetworkQualityObservationSource source_;
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base::Optional<IPHash> host_;
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};
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} // namespace internal
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} // namespace nqe
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} // namespace net
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#endif // NET_NQE_NETWORK_QUALITY_OBSERVATION_H_
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