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