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- // Copyright 2017 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #ifndef NET_NQE_EVENT_CREATOR_H_
- #define NET_NQE_EVENT_CREATOR_H_
- #include <stdint.h>
- #include "base/sequence_checker.h"
- #include "net/base/net_export.h"
- #include "net/log/net_log_with_source.h"
- #include "net/nqe/effective_connection_type.h"
- #include "net/nqe/network_quality.h"
- namespace net {
- class NetLogWithSource;
- namespace nqe::internal {
- // Class that adds net log events for network quality estimator.
- class NET_EXPORT_PRIVATE EventCreator {
- public:
- explicit EventCreator(NetLogWithSource net_log);
- EventCreator(const EventCreator&) = delete;
- EventCreator& operator=(const EventCreator&) = delete;
- ~EventCreator();
- // May add network quality changed event to the net-internals log if there
- // is a change in the effective connection type, or if there is a meaningful
- // change in the values of HTTP RTT, transport RTT or bandwidth.
- // |effective_connection_type| is the current effective connection type.
- // |network_quality| is the current network quality.
- void MaybeAddNetworkQualityChangedEventToNetLog(
- EffectiveConnectionType effective_connection_type,
- const NetworkQuality& network_quality);
- private:
- NetLogWithSource net_log_;
- // The effective connection type when the net log event was last added.
- EffectiveConnectionType past_effective_connection_type_ =
- EFFECTIVE_CONNECTION_TYPE_UNKNOWN;
- // The network quality when the net log event was last added.
- NetworkQuality past_network_quality_;
- SEQUENCE_CHECKER(sequence_checker_);
- };
- } // namespace nqe::internal
- } // namespace net
- #endif // NET_NQE_EVENT_CREATOR_H_
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