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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef REMOTING_HOST_DAEMON_CONFIG_WATCHER_H_ | 5 #ifndef REMOTING_HOST_DAEMON_CONFIG_WATCHER_H_ |
6 #define REMOTING_HOST_DAEMON_CONFIG_WATCHER_H_ | 6 #define REMOTING_HOST_DAEMON_CONFIG_WATCHER_H_ |
7 | 7 |
8 #include "base/basictypes.h" | 8 #include "base/basictypes.h" |
9 #include "base/compiler_specific.h" | 9 #include "base/compiler_specific.h" |
10 #include "base/file_path.h" | 10 #include "base/file_path.h" |
11 #include "base/memory/ref_counted.h" | 11 #include "base/memory/ref_counted.h" |
12 | 12 |
13 namespace base { | 13 namespace base { |
14 class SingleThreadTaskRunner; | 14 class SingleThreadTaskRunner; |
15 } // namespace base | 15 } // namespace base |
16 | 16 |
17 namespace remoting { | 17 namespace remoting { |
18 | 18 |
19 extern const char kHostConfigSwitchName[]; | 19 extern const char kHostConfigSwitchName[]; |
20 extern const FilePath::CharType kDefaultHostConfigFile[]; | 20 extern const base::FilePath::CharType kDefaultHostConfigFile[]; |
21 | 21 |
22 class ConfigFileWatcherImpl; | 22 class ConfigFileWatcherImpl; |
23 | 23 |
24 class ConfigFileWatcher { | 24 class ConfigFileWatcher { |
25 public: | 25 public: |
26 class Delegate { | 26 class Delegate { |
27 public: | 27 public: |
28 virtual ~Delegate(); | 28 virtual ~Delegate(); |
29 | 29 |
30 // Called once after starting watching the configuration file and every time | 30 // Called once after starting watching the configuration file and every time |
31 // the file changes. | 31 // the file changes. |
32 virtual void OnConfigUpdated(const std::string& serialized_config) = 0; | 32 virtual void OnConfigUpdated(const std::string& serialized_config) = 0; |
33 | 33 |
34 // Called when the configuration file watcher encountered an error. | 34 // Called when the configuration file watcher encountered an error. |
35 virtual void OnConfigWatcherError() = 0; | 35 virtual void OnConfigWatcherError() = 0; |
36 }; | 36 }; |
37 | 37 |
38 // Creates a configuration file watcher that lives at the |io_task_runner| | 38 // Creates a configuration file watcher that lives at the |io_task_runner| |
39 // thread but posts config file updates on on |main_task_runner|. | 39 // thread but posts config file updates on on |main_task_runner|. |
40 ConfigFileWatcher( | 40 ConfigFileWatcher( |
41 scoped_refptr<base::SingleThreadTaskRunner> main_task_runner, | 41 scoped_refptr<base::SingleThreadTaskRunner> main_task_runner, |
42 scoped_refptr<base::SingleThreadTaskRunner> io_task_runner, | 42 scoped_refptr<base::SingleThreadTaskRunner> io_task_runner, |
43 Delegate* delegate); | 43 Delegate* delegate); |
44 virtual ~ConfigFileWatcher(); | 44 virtual ~ConfigFileWatcher(); |
45 | 45 |
46 // Starts watching |config_path|. | 46 // Starts watching |config_path|. |
47 void Watch(const FilePath& config_path); | 47 void Watch(const base::FilePath& config_path); |
48 | 48 |
49 private: | 49 private: |
50 scoped_refptr<ConfigFileWatcherImpl> impl_; | 50 scoped_refptr<ConfigFileWatcherImpl> impl_; |
51 | 51 |
52 DISALLOW_COPY_AND_ASSIGN(ConfigFileWatcher); | 52 DISALLOW_COPY_AND_ASSIGN(ConfigFileWatcher); |
53 }; | 53 }; |
54 | 54 |
55 } // namespace remoting | 55 } // namespace remoting |
56 | 56 |
57 #endif // REMOTING_HOST_DAEMON_CONFIG_WATCHER_H_ | 57 #endif // REMOTING_HOST_DAEMON_CONFIG_WATCHER_H_ |
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