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| 1 // Copyright 2013 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 NET_BASE_NET_LOG_LOGGER_H_ | |
| 6 #define NET_BASE_NET_LOG_LOGGER_H_ | |
| 7 | |
| 8 #include <stdio.h> | |
| 9 | |
| 10 #include "base/files/scoped_file.h" | |
| 11 #include "base/macros.h" | |
| 12 #include "net/base/net_log.h" | |
| 13 | |
| 14 namespace base { | |
| 15 class DictionaryValue; | |
| 16 class FilePath; | |
| 17 class Value; | |
| 18 } | |
| 19 | |
| 20 namespace net { | |
| 21 | |
| 22 // NetLogLogger watches the NetLog event stream, and sends all entries to | |
| 23 // a file specified on creation. | |
| 24 // | |
| 25 // The text file will contain a single JSON object. | |
| 26 class NET_EXPORT NetLogLogger : public NetLog::ThreadSafeObserver { | |
| 27 public: | |
| 28 // Takes ownership of |file| and will write network events to it once logging | |
| 29 // starts. |file| must be non-NULL handle and be open for writing. | |
| 30 // |constants| is a legend for decoding constant values used in the log. | |
| 31 NetLogLogger(FILE* file, const base::Value& constants); | |
| 32 ~NetLogLogger() override; | |
| 33 | |
| 34 // Sets the log level to log at. Must be called before StartObserving. | |
| 35 void set_log_level(NetLog::LogLevel log_level); | |
| 36 | |
| 37 // Starts observing specified NetLog. Must not already be watching a NetLog. | |
| 38 // Separate from constructor to enforce thread safety. | |
| 39 void StartObserving(NetLog* net_log); | |
| 40 | |
| 41 // Stops observing net_log(). Must already be watching. | |
| 42 void StopObserving(); | |
| 43 | |
| 44 // net::NetLog::ThreadSafeObserver implementation: | |
| 45 void OnAddEntry(const NetLog::Entry& entry) override; | |
| 46 | |
| 47 // Create a dictionary containing legend for net/ constants. Caller takes | |
| 48 // ownership of returned value. | |
| 49 // TODO(mmenke): Get rid of this, and have embedders use GetNetConstants | |
| 50 // directly. Also maybe call that function by default, so only embedders | |
| 51 // that need more constants need to worry about it. | |
| 52 static base::DictionaryValue* GetConstants(); | |
| 53 | |
| 54 private: | |
| 55 base::ScopedFILE file_; | |
| 56 | |
| 57 // The LogLevel to log at. | |
| 58 NetLog::LogLevel log_level_; | |
| 59 | |
| 60 // True if OnAddEntry() has been called at least once. | |
| 61 bool added_events_; | |
| 62 | |
| 63 DISALLOW_COPY_AND_ASSIGN(NetLogLogger); | |
| 64 }; | |
| 65 | |
| 66 } // namespace net | |
| 67 | |
| 68 #endif // NET_BASE_NET_LOG_LOGGER_H_ | |
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