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logger.h
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1 /*
2  * Copyright © 2012 Canonical Ltd.
3  *
4  * This program is free software: you can redistribute it and/or modify it
5  * under the terms of the GNU Lesser General Public License version 3,
6  * as published by the Free Software Foundation.
7  *
8  * This program is distributed in the hope that it will be useful,
9  * but WITHOUT ANY WARRANTY; without even the implied warranty of
10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11  * GNU Lesser General Public License for more details.
12  *
13  * You should have received a copy of the GNU Lesser General Public License
14  * along with this program. If not, see <http://www.gnu.org/licenses/>.
15  *
16  * Authored by: Thomas Voß <thomas.voss@canonical.com>
17  */
18 
19 #ifndef MIR_LOGGING_LOGGER_H_
20 #define MIR_LOGGING_LOGGER_H_
21 
22 #include <string>
23 
24 namespace mir
25 {
26 namespace logging
27 {
28 // A facade to shield the inner core of mir to prevent an actual
29 // logging framework from leaking implementation detail.
30 class Logger
31 {
32 public:
33  enum Severity
34  {
35  critical = 0,
36  error = 1,
37  warning = 2,
39  debug = 4
40  };
41 
42  template<Severity severity>
43  void log(const std::string& message)
44  {
45  static const std::string unknown_component("UnknownComponent");
46  log(severity, message, unknown_component);
47  }
48 
49  template<Severity severity>
50  void log(const std::string& message, const std::string& component)
51  {
52  log(severity, message, component);
53  }
54 
55 protected:
56  Logger() {}
57  virtual ~Logger() = default;
58  Logger(const Logger&) = delete;
59  Logger& operator=(const Logger&) = delete;
60 
61  virtual void log(Severity severity,
62  const std::string& message,
63  const std::string& component) = 0;
64 };
65 }
66 }
67 
68 #endif // MIR_LOGGING_LOGGER_H_

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