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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef REMOTING_CLIENT_CLIENT_STATUS_LOGGER_H_
      6 #define REMOTING_CLIENT_CLIENT_STATUS_LOGGER_H_
      7 
      8 #include "base/threading/non_thread_safe.h"
      9 #include "base/time/time.h"
     10 #include "remoting/protocol/connection_to_host.h"
     11 #include "remoting/protocol/errors.h"
     12 #include "remoting/signaling/log_to_server.h"
     13 
     14 namespace remoting {
     15 
     16 class ChromotingStats;
     17 
     18 // ClientStatusLogger sends client log entries to a server.
     19 // The contents of the log entries are described in server_log_entry_client.cc.
     20 // They do not contain any personally identifiable information.
     21 class ClientStatusLogger : public base::NonThreadSafe {
     22  public:
     23   ClientStatusLogger(ServerLogEntry::Mode mode,
     24                      SignalStrategy* signal_strategy,
     25                      const std::string& directory_bot_jid);
     26   ~ClientStatusLogger();
     27 
     28   void LogSessionStateChange(protocol::ConnectionToHost::State state,
     29                              protocol::ErrorCode error);
     30   void LogStatistics(remoting::ChromotingStats* statistics);
     31 
     32   // Allows test code to fake SignalStrategy state change events.
     33   void SetSignalingStateForTest(SignalStrategy::State state);
     34 
     35  private:
     36   LogToServer log_to_server_;
     37 
     38   // Generates a new random session ID.
     39   void GenerateSessionId();
     40 
     41   // Expire the session ID if the maximum duration has been exceeded.
     42   void MaybeExpireSessionId();
     43 
     44   // A randomly generated session ID to be attached to log messages. This
     45   // is regenerated at the start of a new session.
     46   std::string session_id_;
     47 
     48   // Start time of the session.
     49   base::TimeTicks session_start_time_;
     50 
     51   // Time when the session ID was generated.
     52   base::TimeTicks session_id_generation_time_;
     53 
     54   DISALLOW_COPY_AND_ASSIGN(ClientStatusLogger);
     55 };
     56 
     57 }  // namespace remoting
     58 
     59 #endif  // REMOTING_CLIENT_CLIENT_STATUS_LOGGER_H_
     60