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
|
/*
Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
Her Majesty the Queen in Right of Canada (Communications Research
Center Canada)
Copyright (C), 2014, Matthias P. Braendli, matthias.braendli@mpb.li
*/
/*
This file is part of ODR-DabMod.
ODR-DabMod 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.
ODR-DabMod 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 ODR-DabMod. If not, see <http://www.gnu.org/licenses/>.
*/
#include <list>
#include <stdarg.h>
#include <chrono>
#include "Log.h"
using namespace std;
Logger etiLog;
void Logger::register_backend(LogBackend* backend) {
backends.push_back(backend);
//log(info, "Registered new logger " + backend->get_name());
}
void Logger::log(log_level_t level, const char* fmt, ...)
{
int size = 100;
std::string str;
va_list ap;
while (1) {
str.resize(size);
va_start(ap, fmt);
int n = vsnprintf((char *)str.c_str(), size, fmt, ap);
va_end(ap);
if (n > -1 && n < size) {
str.resize(n);
break;
}
if (n > -1)
size = n + 1;
else
size *= 2;
}
logstr(level, str);
}
void Logger::logstr(log_level_t level, std::string message)
{
/* Remove a potential trailing newline.
* It doesn't look good in syslog
*/
if (message[message.length()-1] == '\n') {
message.resize(message.length()-1);
}
for (auto &backend : backends) {
backend->log(level, message);
}
if (level != log_level_t::trace) {
std::lock_guard<std::mutex> guard(m_cerr_mutex);
std::cerr << levels_as_str[level] << " " << message << std::endl;
}
}
LogLine Logger::level(log_level_t level)
{
return LogLine(this, level);
}
void LogToFile::log(log_level_t level, std::string message)
{
if (level != log_level_t::trace) {
const char* log_level_text[] = {
"DEBUG", "INFO", "WARN", "ERROR", "ALERT", "EMERG"};
// fprintf is thread-safe
fprintf(log_file, SYSLOG_IDENT ": %s: %s\n",
log_level_text[(size_t)level], message.c_str());
fflush(log_file);
}
}
LogTracer::LogTracer(const string& trace_filename)
{
name = "TRACE";
etiLog.level(info) << "Setting up TRACE to " << trace_filename;
m_trace_file = fopen(trace_filename.c_str(), "a");
if (m_trace_file == NULL) {
fprintf(stderr, "Cannot open trace file !");
throw std::runtime_error("Cannot open trace file !");
}
auto now = chrono::steady_clock::now().time_since_epoch();
m_trace_micros_startup =
chrono::duration_cast<chrono::microseconds>(now).count();
fprintf(m_trace_file, "0,TRACER,startup at %ld\n", m_trace_micros_startup);
}
void LogTracer::log(log_level_t level, std::string message)
{
if (level == log_level_t::trace) {
const auto now = chrono::steady_clock::now().time_since_epoch();
const auto micros = chrono::duration_cast<chrono::microseconds>(now).count();
fprintf(m_trace_file, "%ld,%s\n",
micros - m_trace_micros_startup,
message.c_str());
}
}
|
