// 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 #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_