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      1 /*
      2  *  Copyright 2015 The WebRTC Project Authors. All rights reserved.
      3  *
      4  *  Use of this source code is governed by a BSD-style license
      5  *  that can be found in the LICENSE file in the root of the source
      6  *  tree. An additional intellectual property rights grant can be found
      7  *  in the file PATENTS.  All contributing project authors may
      8  *  be found in the AUTHORS file in the root of the source tree.
      9  */
     10 
     11 #ifndef WEBRTC_BASE_FILE_ROTATING_LOG_SINK_H_
     12 #define WEBRTC_BASE_FILE_ROTATING_LOG_SINK_H_
     13 
     14 #include <string>
     15 
     16 #include "webrtc/base/constructormagic.h"
     17 #include "webrtc/base/filerotatingstream.h"
     18 #include "webrtc/base/logging.h"
     19 #include "webrtc/base/scoped_ptr.h"
     20 
     21 namespace rtc {
     22 
     23 // Log sink that uses a FileRotatingStream to write to disk.
     24 // Init() must be called before adding this sink.
     25 class FileRotatingLogSink : public LogSink {
     26  public:
     27   // |num_log_files| must be greater than 1 and |max_log_size| must be greater
     28   // than 0.
     29   FileRotatingLogSink(const std::string& log_dir_path,
     30                       const std::string& log_prefix,
     31                       size_t max_log_size,
     32                       size_t num_log_files);
     33   ~FileRotatingLogSink() override;
     34 
     35   // Writes the message to the current file. It will spill over to the next
     36   // file if needed.
     37   void OnLogMessage(const std::string& message) override;
     38 
     39   // Deletes any existing files in the directory and creates a new log file.
     40   virtual bool Init();
     41 
     42   // Disables buffering on the underlying stream.
     43   bool DisableBuffering();
     44 
     45  protected:
     46   explicit FileRotatingLogSink(FileRotatingStream* stream);
     47 
     48  private:
     49   scoped_ptr<FileRotatingStream> stream_;
     50 
     51   RTC_DISALLOW_COPY_AND_ASSIGN(FileRotatingLogSink);
     52 };
     53 
     54 // Log sink that uses a CallSessionFileRotatingStream to write to disk.
     55 // Init() must be called before adding this sink.
     56 class CallSessionFileRotatingLogSink : public FileRotatingLogSink {
     57  public:
     58   CallSessionFileRotatingLogSink(const std::string& log_dir_path,
     59                                  size_t max_total_log_size);
     60   ~CallSessionFileRotatingLogSink() override;
     61 
     62  private:
     63   RTC_DISALLOW_COPY_AND_ASSIGN(CallSessionFileRotatingLogSink);
     64 };
     65 
     66 }  // namespace rtc
     67 
     68 #endif  // WEBRTC_BASE_FILE_ROTATING_LOG_SINK_H_
     69