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annotate logging.c @ 271:4a2fa10b8421 default tip

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Publish DDS and measured frequencies through ZMQ
author Daniele Nicolodi <daniele.nicolodi@nist.gov>
date Sat, 15 Aug 2020 18:22:42 -0600
parents 3622e24a443f
children
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1 #include <ansi_c.h>
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2 #include <inifile.h>
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3 #include <lowlvlio.h>
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4 #include <ansi_c.h>
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5
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6 #include "config.h"
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7 #include "logging.h"
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8
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9 /* this refers to the event time defined as a global variable in the main program */
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10 extern double utc;
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11 /* main panel id */
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12 extern unsigned int MainPanel;
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13
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14
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15 struct logger {
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16 unsigned int panel;
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17 char *dirpath;
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18 char *filepath;
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19 int fd;
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20 int level;
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21 int yday;
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22 void(*onerror)(int, const char *);
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23 };
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24
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25
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26 static const char *levels[] = {
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27 [ERROR] = "ERROR",
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28 [WARNING] = "WARNING",
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29 [INFO] = "INFO",
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30 [DEBUG] = "DEBUG",
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31 };
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32
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33
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34 static inline int strtolevel(const char *str)
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35 {
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36 for (int i = 0; i < 4; i++) {
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37 if (streq(levels[i], str))
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38 return i;
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39 }
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40 return DEBUG;
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41 }
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42
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43
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44 static int rotate(struct logger *l, time_t now)
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45 {
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46 int len, rv;
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47 char id[7];
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48 struct tm *t;
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49
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50 if (! l->dirpath)
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51 return 0;
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52
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53 /* utc day */
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54 t = gmtime(&now);
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55 if (l->yday == t->tm_yday)
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56 return 0;
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57
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58 /* close old file descriptor */
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59 close(l->fd);
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60 l->fd = -1;
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61
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62 /* construct new file name */
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63 strftime(id, sizeof(id), "%y%m%d", t);
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64 len = strlen(l->dirpath) + 1 + sizeof(id) + strlen("-Log.txt") + 1;
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65 l->filepath = malloc(len);
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66 snprintf(l->filepath, len, "%s\\%s-Log.txt", l->dirpath, id);
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67
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68 /* open new log file */
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69 rv = open(l->filepath, O_CREAT|O_WRONLY|O_APPEND, 00744);
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70 if (rv < 0)
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71 return rv;
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72
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73 /* update status */
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74 l->fd = rv;
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75 l->yday = t->tm_yday;
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76 __logmessage(l, DEBUG, "logging to '%s'", l->filepath);
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77
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78 return 1;
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79 }
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80
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81
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82 struct logger * __logger_init(void(*onerror)(int, const char *))
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83 {
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84 int rv, panel;
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85 char path[MAX_PATHNAME_LEN], *str;
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86
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87 struct logger *l = malloc(sizeof(struct logger));
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88 memset(l, 0, sizeof(*l));
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89
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90 l->onerror = onerror;
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91 l->fd = -1;
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92 l->level = DEBUG;
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93
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94 panel = LoadPanel(0, "FXAnalyse.uir", LOGGING);
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95 if (panel < 0)
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96 return NULL;
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97 l->panel = panel;
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98
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99 /* configuration file path */
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100 GetIniFilePath(path);
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101
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102 /* load configuration file */
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103 IniText configuration = Ini_New(TRUE);
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104 Ini_ReadFromFile(configuration, path);
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105
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106 /* logging folder path */
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107 rv = Ini_GetStringCopy(configuration, "logging", "folder", &l->dirpath);
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108
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109 /* logging level */
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110 rv = Ini_GetStringCopy(configuration, "logging", "level", &str);
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111 if (rv > 0) {
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112 l->level = strtolevel(str);
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113 free(str);
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114 }
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115
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116 Ini_Dispose(configuration);
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117
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118 return l;
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119 }
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120
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121
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122 void __logmessage(struct logger *l, enum loglevel level, const char *frmt, ...)
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123 {
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124 char msg[1024];
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125 int len = 0;
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126
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127 /* timestamp */
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128 len += sprintf(msg, "%014.3f ", utc);
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129 time_t now = (time_t)utc;
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130 if (now == 0)
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131 now = time(NULL);
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132 struct tm *t = localtime(&now);
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133 len += strftime(msg + len, sizeof(msg) - len, "%d-%m-%Y %H:%M:%S ", t);
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134
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135 /* level */
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136 len += snprintf(msg + len, sizeof(msg) - len, "%s: ", levels[level]);
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137
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138 /* message */
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139 va_list args;
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140 va_start(args, frmt);
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141 len += vsnprintf(msg + len, sizeof(msg) - len, frmt, args);
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142 va_end(args);
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143
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144 /* newline */
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145 len = MIN(len, sizeof(msg) - 3);
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146 msg[len++] = '\r';
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147 msg[len++] = '\n';
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148
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149 /* string terminator */
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150 msg[len] = '\0';
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151
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152 /* rotate log file based on current date */
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153 rotate(l, now);
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154
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155 /* write to log file */
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156 if ((level <= l->level) && (l->fd >= 0))
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157 write(l->fd, msg, len);
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158
191
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159 /* display message */
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160 SetCtrlVal(l->panel, LOGGING_LOGGING, msg);
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161
199
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162 /* report error */
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163 if (level == ERROR)
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164 l->onerror(level, msg);
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165 }
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166
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167
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168 void __logger_panel_visible(struct logger *l, int visible)
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169 {
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170 SetPanelAttribute(l->panel, ATTR_VISIBLE, visible);
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171 }