summaryrefslogtreecommitdiffstats
path: root/src/Common/LogManager.h
blob: 98bb6f77809844a20ce97d54a4179a84e2767dc1 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
/*
 * LogManager.h
 *
 * Copyright (C) 2008 Matthias Schiffer <matthias@gamezock.de>
 *
 * This program is free software: you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef MAD_COMMON_LOGMANAGER_H_
#define MAD_COMMON_LOGMANAGER_H_

#include <config.h>

#include "Configurable.h"
#include "Logger.h"
#include "RemoteLogger.h"

#include <queue>
#include <set>

#include <boost/thread/condition_variable.hpp>
#include <boost/thread/mutex.hpp>

namespace Mad {

namespace Net {
class ThreadManager;
}

namespace Common {

class LogManager : public Configurable {
  private:
    friend class Net::ThreadManager;

    typedef LoggerBase::MessageCategory MessageCategory;
    typedef LoggerBase::MessageLevel MessageLevel;

    struct Message {
      MessageCategory category;
      MessageLevel level;
      time_t timestamp;
      std::string message;
    };

    struct RemoteMessage {
      MessageCategory category;
      MessageLevel level;
      time_t timestamp;
      std::string message;
      std::string source;
    };

    class ConsoleLogger : public Logger, public RemoteLogger {
      private:
        // For long messages, writing to cerr is not atomic
        // -> lock cerr to prevent mixing messages up
        boost::mutex cerrLock;

      protected:
        virtual void logMessage(MessageCategory category _UNUSED_PARAMETER_, MessageLevel level, time_t timestamp _UNUSED_PARAMETER_, const std::string &message);
        virtual void logMessage(MessageCategory category _UNUSED_PARAMETER_, MessageLevel, time_t timestamp _UNUSED_PARAMETER_, const std::string &message, const std::string &messageSource);

      public:
        ConsoleLogger() {}

        void logMessageDirect(MessageCategory category _UNUSED_PARAMETER_, MessageLevel level _UNUSED_PARAMETER_, time_t timestamp _UNUSED_PARAMETER_, const std::string &message);
    };


    static LogManager logManager;

    ConsoleLogger consoleLogger;

    std::set<Logger*> loggers;
    std::set<RemoteLogger*> remoteLoggers;
    bool configured, running;

    boost::mutex queueLock;
    boost::condition_variable queueCond;

    boost::mutex loggerLock;
    boost::mutex remoteLoggerLock;

    std::queue<Message> messageQueue;
    std::queue<RemoteMessage> remoteMessageQueue;

    void loggerThread();
    void stopLoggerThread() {
      queueLock.lock();
      running = false;
      queueLock.unlock();
      queueCond.notify_one();
    }

    LogManager() : configured(false), running(false) {}

  protected:
    virtual bool handleConfigEntry(const ConfigEntry &entry, bool handled);
    virtual void configFinished();

  public:
    void log(MessageCategory category, MessageLevel level, time_t timestamp, const std::string &message);
    void log(MessageCategory category, MessageLevel level, time_t timestamp, const std::string &message, const std::string &source);

    void registerLogger(Logger *logger) {
      loggerLock.lock();
      loggers.insert(logger);
      loggerLock.unlock();
    }

    void unregisterLogger(Logger *logger) {
      loggerLock.lock();
      loggers.erase(logger);
      loggerLock.unlock();
    }

    void registerLogger(RemoteLogger *logger) {
      remoteLoggerLock.lock();
      remoteLoggers.insert(logger);
      remoteLoggerLock.unlock();
    }

    void unregisterLogger(RemoteLogger *logger) {
      remoteLoggerLock.lock();
      remoteLoggers.erase(logger);
      remoteLoggerLock.unlock();
    }

    static LogManager *get() {
      return &logManager;
    }
};

}
}

#endif /* MAD_COMMON_LOGMANAGER_H_ */