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
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
|
// Copyright (C) 2011-2022 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
#ifndef LOGGER_IMPL_H
#define LOGGER_IMPL_H
#include <stdarg.h>
#include <time.h>
#include <iostream>
#include <cstdlib>
#include <string>
#include <map>
#include <utility>
#include <boost/shared_ptr.hpp>
#include <boost/noncopyable.hpp>
// log4cplus logger header file
#include <log4cplus/logger.h>
// Kea logger files
#include <log/logger_level_impl.h>
#include <log/message_types.h>
#include <log/interprocess/interprocess_sync.h>
#include <log/output_option.h>
namespace isc {
namespace log {
/// \brief Console Logger Implementation
///
/// The logger uses a "pimpl" idiom for implementation, where the base logger
/// class contains little more than a pointer to the implementation class, and
/// all actions are carried out by the latter.
///
/// This particular implementation is based on log4cplus (from sourceforge:
/// http://log4cplus.sourceforge.net). Particular items of note:
///
/// a) Kea loggers have names of the form "program.sublogger". In other
/// words, each of the loggers is a sub-logger of the main program logger.
/// In log4cplus, there is a root logger (called "root" according to the
/// documentation, but actually unnamed) and all loggers created are subloggers
/// if it.
///
/// In this implementation, the log4cplus root logger is unused. Instead, the
/// Kea root logger is created as a child of the log4cplus root logger,
/// and all other loggers used in the program are created as sub-loggers of
/// that. In this way, the logging system can just include the name of the
/// logger in each message without the need to specially consider if the
/// message is the root logger or not.
///
/// b) The idea of debug levels is implemented. See logger_level.h and
/// logger_level_impl.h for more details on this.
class LoggerImpl : public boost::noncopyable {
public:
/// \brief Constructor
///
/// Creates a logger of the specific name.
///
/// \param name Name of the logger.
LoggerImpl(const std::string& name);
/// \brief Destructor
virtual ~LoggerImpl();
/// \brief Version
static std::string getVersion();
/// \brief Get the full name of the logger (including the root name)
virtual std::string getName() {
return (name_);
}
/// \brief Set Severity Level for Logger
///
/// Sets the level at which this logger will log messages. If none is set,
/// the level is inherited from the parent.
///
/// \param severity Severity level to log
/// \param dbglevel If the severity is DEBUG, this is the debug level.
/// This can be in the range 0 to 99 and controls the verbosity. A value
/// outside these limits is silently coerced to the nearest boundary.
virtual void setSeverity(Severity severity, int dbglevel = 1);
/// \brief Get Severity Level for Logger
///
/// \return The current logging level of this logger. In most cases though,
/// the effective logging level is what is required.
virtual Severity getSeverity();
/// \brief Get Effective Severity Level for Logger
///
/// \return The effective severity level of the logger. This is the same
/// as getSeverity() if the logger has a severity level set, but otherwise
/// is the severity of the parent.
virtual Severity getEffectiveSeverity();
/// \brief Return debug level
///
/// \return Current setting of debug level. This will be zero if the
/// the current severity level is not DEBUG.
virtual int getDebugLevel();
/// \brief Return effective debug level
///
/// \return Current setting of effective debug level. This will be zero if
/// the current effective severity level is not DEBUG.
virtual int getEffectiveDebugLevel();
/// \brief Returns if Debug Message Should Be Output
///
/// \param dbglevel Level for which debugging is checked. Debugging is
/// enabled only if the logger has DEBUG enabled and if the dbglevel
/// checked is less than or equal to the debug level set for the logger.
virtual bool isDebugEnabled(int dbglevel = MIN_DEBUG_LEVEL) {
Level level(DEBUG, dbglevel);
return logger_.isEnabledFor(LoggerLevelImpl::convertFromBindLevel(level));
}
/// \brief Is INFO Enabled?
virtual bool isInfoEnabled() {
return (logger_.isEnabledFor(log4cplus::INFO_LOG_LEVEL));
}
/// \brief Is WARNING Enabled?
virtual bool isWarnEnabled() {
return (logger_.isEnabledFor(log4cplus::WARN_LOG_LEVEL));
}
/// \brief Is ERROR Enabled?
virtual bool isErrorEnabled() {
return (logger_.isEnabledFor(log4cplus::ERROR_LOG_LEVEL));
}
/// \brief Is FATAL Enabled?
virtual bool isFatalEnabled() {
return (logger_.isEnabledFor(log4cplus::FATAL_LOG_LEVEL));
}
/// \brief Raw output
///
/// Writes the message with time into the log. Used by the Formatter
/// to produce output.
///
/// \param severity Severity of the message. (This controls the prefix
/// label output with the message text.)
/// \param message Text of the message.
void outputRaw(const Severity& severity, const std::string& message);
/// \brief Look up message text in dictionary
///
/// This gets you the unformatted text of message for given ID.
boost::shared_ptr<std::string> lookupMessage(const MessageID& id);
/// \brief Replace the interprocess synchronization object
///
/// If this method is called with NULL as the argument, it throws a
/// BadInterprocessSync exception.
///
/// \param sync The logger uses this synchronization object for
/// synchronizing output of log messages. It should be deletable and
/// the ownership is transferred to the logger implementation.
/// If NULL is passed, a BadInterprocessSync exception is thrown.
void setInterprocessSync(isc::log::interprocess::InterprocessSync* sync);
/// @brief Check if this logger has an appender of the given type.
///
/// @param destination the appender type to be checked: console, file or syslog
///
/// @return true if an appender of the given type is found, false otherwise
bool hasAppender(OutputOption::Destination const destination);
/// \brief Equality
///
/// Check if two instances of this logger refer to the same stream.
/// (This method is principally for testing.)
///
/// \return true if the logger objects are instances of the same logger.
bool operator==(const LoggerImpl& other) const {
return (name_ == other.name_);
}
private:
std::string name_; ///< Full name of this logger
log4cplus::Logger logger_; ///< Underlying log4cplus logger
isc::log::interprocess::InterprocessSync* sync_;
};
} // namespace log
} // namespace isc
#endif // LOGGER_IMPL_H
|
