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annotate logging.c @ 258:5296f3bcd160

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Implement DDS clients reconnect On network send() failures try to reconnect to the server before returning an error. This allows to restart the network servers controlling the DDSes wiothout having to restart the clients.
author Daniele Nicolodi <daniele.nicolodi@obspm.fr>
date Tue, 16 Jun 2015 14:31:35 +0200
parents d948e3ced2b9
children 3622e24a443f
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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, struct tm *t)
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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
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49 if (! l->dirpath)
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50 return 0;
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51
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52 if (l->yday == t->tm_yday)
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53 return 0;
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54
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55 /* close old file descriptor */
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56 close(l->fd);
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57 l->fd = -1;
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58
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59 /* construct new file name */
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60 strftime(id, sizeof(id), "%y%m%d", t);
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61 len = strlen(l->dirpath) + 1 + sizeof(id) + strlen("-Log.txt") + 1;
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62 l->filepath = malloc(len);
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63 snprintf(l->filepath, len, "%s\\%s-Log.txt", l->dirpath, id);
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64
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65 /* open new log file */
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66 rv = open(l->filepath, O_CREAT|O_WRONLY|O_APPEND, 00744);
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67 if (rv < 0)
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68 return rv;
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69
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70 /* update status */
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71 l->fd = rv;
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72 l->yday = t->tm_yday;
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73 __logmessage(l, DEBUG, "logging to '%s'", l->filepath);
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74
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75 return 1;
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76 }
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77
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78
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79 struct logger * __logger_init(void(*onerror)(int, const char *))
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80 {
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81 int rv, panel;
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82 char path[MAX_PATHNAME_LEN], *str;
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83
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84 struct logger *l = malloc(sizeof(struct logger));
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85 memset(l, 0, sizeof(*l));
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86
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87 l->onerror = onerror;
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88 l->fd = -1;
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89 l->level = DEBUG;
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90
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91 panel = LoadPanel(0, "FXAnalyse.uir", LOGGING);
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92 if (panel < 0)
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93 return NULL;
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94 l->panel = panel;
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95
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96 /* configuration file path */
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97 GetIniFilePath(path);
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98
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99 /* load configuration file */
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100 IniText configuration = Ini_New(TRUE);
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101 Ini_ReadFromFile(configuration, path);
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102
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103 /* logging folder path */
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104 rv = Ini_GetStringCopy(configuration, "logging", "folder", &l->dirpath);
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105
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106 /* logging level */
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107 rv = Ini_GetStringCopy(configuration, "logging", "level", &str);
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108 if (rv > 0) {
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109 l->level = strtolevel(str);
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110 free(str);
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111 }
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112
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113 Ini_Dispose(configuration);
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114
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115 return l;
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116 }
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117
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118
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119 void __logmessage(struct logger *l, enum loglevel level, const char *frmt, ...)
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120 {
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121 char msg[1024];
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122 int len = 0;
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123
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124 /* timestamp */
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125 len += sprintf(msg, "%014.3f ", utc);
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126 time_t now = (time_t)utc;
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127 if (now == 0)
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128 now = time(NULL);
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129 struct tm *t = localtime(&now);
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130 len += strftime(msg + len, sizeof(msg) - len, "%d-%m-%Y %H:%M:%S ", t);
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131
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132 /* level */
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133 len += snprintf(msg + len, sizeof(msg) - len, "%s: ", levels[level]);
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134
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135 /* message */
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136 va_list args;
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137 va_start(args, frmt);
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138 len += vsnprintf(msg + len, sizeof(msg) - len, frmt, args);
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139 va_end(args);
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140
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141 /* newline */
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142 len = MIN(len, sizeof(msg) - 3);
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143 msg[len++] = '\r';
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144 msg[len++] = '\n';
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145
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146 /* string terminator */
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147 msg[len] = '\0';
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148
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149 /* rotate log file based on current date */
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150 rotate(l, t);
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151
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152 /* write to log file */
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153 if ((level <= l->level) && (l->fd >= 0))
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154 write(l->fd, msg, len);
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155
191
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156 /* display message */
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157 SetCtrlVal(l->panel, LOGGING_LOGGING, msg);
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158
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159 /* report error */
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160 if (level == ERROR)
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161 l->onerror(level, msg);
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162 }
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163
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164
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165 void __logger_panel_visible(struct logger *l, int visible)
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166 {
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167 SetPanelAttribute(l->panel, ATTR_VISIBLE, visible);
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168 }