git.itanic.dy.fi Git - rrdd/blob - rrdtool.c

   1 #include <time.h>
   2
   3 #include "rrdtool.h"
   4 #include "process.h"
   5
   6 #define MAX_ARGS        512
   7 #define ARGSTR_LEN      32768
   8
   9 #define RRDTOOL_CMD "/usr/bin/rrdtool"
  10
  11 #define print(fmt, arg...) \
  12         args[argcnt] = argstr + idx;                    \
  13         idx += sprintf(argstr + idx, fmt, ##arg);       \
  14         argcnt++;                                       \
  15         argstr[++idx] = 0
  16
  17 int rrdtool_draw_image(struct rrd_image *image)
  18 {
  19         char cmd[] = RRDTOOL_CMD;
  20 //      char cmd[] = "echo";
  21         char *args[512], argstr[ARGSTR_LEN];
  22         int idx = 0, argcnt = 0, i,j;
  23         char timestamp[256];
  24         char tmp[256];
  25         time_t t = time(0);
  26
  27         strftime(tmp, 256, "%d.%m.%Y %T (%Z) ", localtime(&t));
  28         for (i = 0, j = 0; j < 256;) {
  29                 if (tmp[i] == ':') {
  30                         timestamp[j++] = '\\';
  31                 }
  32                 timestamp[j++] = tmp[i++];
  33                 if (!tmp[i])
  34                         break;
  35         }
  36         timestamp[j] = 0;
  37
  38
  39         print(" ");
  40         print("graph");
  41         print("%s", image->image_filename);
  42
  43         print("--start");
  44         print("%s", image->timestart);
  45         print("--end");
  46         print("%s", image->timeend);
  47         print("--width");
  48         print("%d", image->width);
  49         print("--height");
  50         print("%d", image->height);
  51         print("--imgformat");
  52         print("%s", image->imageformat);
  53
  54         for (i = 0; image->options[i]; i++) {
  55                 print("%s", image->options[i]);
  56         }
  57
  58         for (i = 0; image->text[i]; i++) {
  59                 args[argcnt++] = image->text[i];
  60         }
  61
  62         print("COMMENT:Last update %s\\c", timestamp);
  63
  64         args[argcnt] = 0;
  65
  66         run(cmd, args);
  67
  68         return 0;
  69 }
  70
  71 int rrdtool_draw_images(struct rrd_image **image)
  72 {
  73         int i;
  74         for (i = 0; image[i]; i++)
  75                 rrdtool_draw_image(image[i]);
  76
  77         return 0;
  78 }
  79
  80 int rrdtool_update_data(struct rrd_database *rrd)
  81 {
  82         char data[1024];
  83         char cmd[] = RRDTOOL_CMD;
  84 //      char cmd[] = "echo";
  85         char *cmdline[] = {
  86                 "",
  87                 "update",
  88                 rrd->filename,
  89                 data,
  90                 0
  91         };
  92         int l;
  93
  94         rrd->last_update = time(0);
  95         if (do_fork())
  96                 return 0;
  97
  98         l = sprintf(data, "N:");
  99
 100         if (rrd->parse) {
 101                 rrd->parse(data + l);
 102                 run(cmd, cmdline);
 103         }
 104
 105         if (rrd->images)
 106                 rrdtool_draw_images(rrd->images);
 107
 108         while (harvest_zombies(0));
 109         exit(0);
 110 }