forked from an-dr/microlog
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathmain.cpp
More file actions
167 lines (140 loc) · 7.27 KB
/
main.cpp
File metadata and controls
167 lines (140 loc) · 7.27 KB
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
// clang-format off
/*
Example of using ulog library in C/C++
It demonstrates basic logging functionality using C interface.
The output to console looks like this (with possible variations based on
build configuration):
16:20:14 | MsgID:000 | TRACE main.cpp:97: Trace message 1
16:20:14 | MsgID:001 | DEBUG main.cpp:99: Debug message 0x2
16:20:14 | MsgID:002 | INFO main.cpp:100: Info message 3.000000
[Output msg count:0] 16:20:14 | MsgID:002 | INFO main.cpp:100: Info message 3.000000
16:20:14 | MsgID:003 | WARN main.cpp:101: Warning message 4
[Output msg count:1] 16:20:14 | MsgID:003 | WARN main.cpp:101: Warning message 4
16:20:14 | MsgID:004 | ERROR main.cpp:102: Error message Five
[Output msg count:2] 16:20:14 | MsgID:004 | ERROR main.cpp:102: Error message Five
16:20:14 | MsgID:005 | FATAL main.cpp:103: Fatal message 6
[Output msg count:3] 16:20:14 | MsgID:005 | FATAL main.cpp:103: Fatal message 6
16:20:14 | MsgID:006 | DEBUG [Bluetooth] main.cpp:115: Bluetooth message 1
16:20:14 | MsgID:007 | WARN [Audio] main.cpp:118: Audio message 2
[Output msg count:4] 16:20:14 | MsgID:007 | WARN [Audio] main.cpp:118: Audio message 2
16:20:14 | MsgID:008 | ERROR [Serial] main.cpp:119: Serial message 1
[Output msg count:5] 16:20:14 | MsgID:008 | ERROR [Serial] main.cpp:119: Serial message 1
16:20:14 | MsgID:009 | FATAL [Serial] main.cpp:120: Serial message 2
[Output msg count:6] 16:20:14 | MsgID:009 | FATAL [Serial] main.cpp:120: Serial message 2
16:20:14 | MsgID:010 | DEBUG | [Audio] main.cpp:144: Message for debugging
[Output msg count:7] 16:20:14 | MsgID:010 | DEBUG | [Audio] main.cpp:144: Message for debugging
16:20:14 | MsgID:011 | INFO | [Bluetooth] main.cpp:145: General information
[Output msg count:8] 16:20:14 | MsgID:011 | INFO | [Bluetooth] main.cpp:145: General information
16:20:14 | MsgID:012 | NOTICE | [Serial] main.cpp:146: Important notice
[Output msg count:9] 16:20:14 | MsgID:012 | NOTICE | [Serial] main.cpp:146: Important notice
16:20:14 | MsgID:013 | WARN | [Audio] main.cpp:147: Warning message
[Output msg count:10] 16:20:14 | MsgID:013 | WARN | [Audio] main.cpp:147: Warning message
16:20:14 | MsgID:014 | ERR | [Audio] main.cpp:148: Error message
[Output msg count:11] 16:20:14 | MsgID:014 | ERR | [Audio] main.cpp:148: Error message
16:20:14 | MsgID:015 | CRIT | [Bluetooth] main.cpp:149: Critical condition
[Output msg count:12] 16:20:14 | MsgID:015 | CRIT | [Bluetooth] main.cpp:149: Critical condition
16:20:14 | MsgID:016 | ALERT | [Serial] main.cpp:150: Alert: action must be taken immediately
[Output msg count:13] 16:20:14 | MsgID:016 | ALERT | [Serial] main.cpp:150: Alert: action must be taken immediately
16:20:14 | MsgID:017 | EMERG | [Audio] main.cpp:151: Emergency: system is unusable
[Output msg count:14] 16:20:14 | MsgID:017 | EMERG | [Audio] main.cpp:151: Emergency: system is unusable
*/
// clang-format on
#include <cstdio>
#include "ulog.h"
// This prefix function can be used to add any custom information calculated
// at log time, e.g. request ID, user ID, additional time metrics, etc.
// In this example we use it to add ms
void user_prefix(ulog_event *ev, char *prefix, size_t prefix_size) {
(void)ev; // Unused in this example
static int count = 0; // count represents fake milliseconds
snprintf(prefix, prefix_size, " | MsgID:%03d | ", count++);
}
// This handler can be used to get a log string
// and send it to any other output, e.g. network, GUI, etc.
// In this example we just print it to the console with appending
// data sent as a void pointer ("User Output"). We format the data like
// this: "[User Output:N] <log string>"
void user_output(ulog_event *ev, void *arg) {
// Print argument data
static int count = 0;
printf("[%s:%d] ", (const char *)arg, count++);
// Print log string
static char buffer[128];
ulog_event_to_cstr(ev, buffer, sizeof(buffer));
printf("%s\n", buffer);
}
// Simple lock function with simple locking
// This is just an example, real locking should use mutexes or similar
// mechanisms to ensure thread safety.
// The lock function should return ULOG_STATUS_OK on success,
// other values on error.
ulog_status user_lock(bool lock, void *arg) {
(void)(arg);
static bool is_locked = false;
if (lock) {
if (is_locked) {
return ULOG_STATUS_BUSY; // Already locked
}
is_locked = true;
} else {
if (!is_locked) {
return ULOG_STATUS_BUSY; // Not locked
}
is_locked = false;
}
return ULOG_STATUS_OK;
}
int main(int argc, char *argv[]) {
(void)argc;
(void)argv;
printf("\n");
ulog_lock_set_fn(user_lock, nullptr); // Set user lock function
ulog_output_level_set_all(ULOG_LEVEL_TRACE);
/* Extra Outputs =============================== */
FILE *fp = fopen("example.log", "w");
ulog_output_add_file(fp, ULOG_LEVEL_INFO);
ulog_output_add(user_output, (void *)"Output msg count", ULOG_LEVEL_INFO);
/* Prefix ==================================== */
ulog_prefix_set_fn(user_prefix);
/* Core Logging ===================================== */
ulog_trace("Trace message %d", 1);
ulog_debug("Debug message 0x%x", 2);
ulog_info("Info message %f", 3.0);
ulog_warn("Warning message %c", '4');
ulog_error("Error message %s", "Five");
ulog_fatal("Fatal message %s", "6");
/* Topics =========================================== */
printf("\n");
ulog_topic_add("Bluetooth", ULOG_OUTPUT_ALL, ULOG_LEVEL_INFO);
ulog_topic_add("Serial", ULOG_OUTPUT_ALL, ULOG_LEVEL_INFO);
ulog_topic_add("Audio", ULOG_OUTPUT_ALL, ULOG_LEVEL_INFO);
ulog_t_trace("Audio", "Audio message 1 (lower than topic level)");
ulog_topic_debug("Bluetooth", "Bluetooth message 1");
// Short alias: ulog_t_debug("Bluetooth", "Bluetooth message 1");
ulog_t_warn("Audio", "Audio message 2");
ulog_t_error("Serial", "Serial message 1");
ulog_t_fatal("Serial", "Serial message 2");
ulog_output_level_set_all(ULOG_LEVEL_TRACE);
ulog_topic_level_set("Bluetooth", ULOG_LEVEL_WARN);
ulog_t_info("Bluetooth", "Bluetooth message 2 (lower than topic level)");
ulog_t_debug("Serial", "Serial message 3 (lower than global level)");
/* Custom Log Levels ============================ */
printf("\n");
static ulog_level_descriptor syslog_levels = {
.max_level = ULOG_LEVEL_7,
.names = {"DEBUG |", "INFO |", "NOTICE |", "WARN |", "ERR |", "CRIT |",
"ALERT |", "EMERG |"}};
ulog_level_set_new_levels(&syslog_levels);
ulog_topic_level_set("Audio", ULOG_LEVEL_0);
ulog_topic_level_set("Bluetooth", ULOG_LEVEL_0);
ulog_topic_level_set("Serial", ULOG_LEVEL_0);
ulog_t(ULOG_LEVEL_0, "Audio", "Message for debugging");
ulog_t(ULOG_LEVEL_1, "Bluetooth", "General information");
ulog_t(ULOG_LEVEL_2, "Serial", "Important notice");
ulog_t(ULOG_LEVEL_3, "Audio", "Warning message");
ulog_t(ULOG_LEVEL_4, "Audio", "Error message");
ulog_t(ULOG_LEVEL_5, "Bluetooth", "Critical condition");
ulog_t(ULOG_LEVEL_6, "Serial", "Alert: action must be taken immediately");
ulog_t(ULOG_LEVEL_7, "Audio", "Emergency: system is unusable");
return 0;
}