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

   1 #include <sys/types.h>
   2 #include <unistd.h>
   3 #include <getopt.h>
   4 #include <time.h>
   5
   6 #include "process.h"
   7 #include "rrdtool.h"
   8 #include "parser.h"
   9 #include "debug.h"
  10
  11 #include "config.h"
  12 #include "built_in_parsers.h"
  13
  14 struct user_options {
  15         int max_jobs;
  16         char *config_file;
  17 };
  18
  19 int read_args(int argc, char *argv[], struct user_options *opts)
  20 {
  21         int option_index = 0, c;
  22         static struct option long_options[] = {
  23                 { .val = 'j', .has_arg = 1, .name = "jobs", },
  24                 { .val = 'c', .has_arg = 1, .name = "config", },
  25                 { },
  26         };
  27         char short_options[] = "j:c:";
  28
  29         while (1) {
  30                 c = getopt_long(argc, argv, short_options, long_options,
  31                                 &option_index);
  32
  33                 if (c == -1)
  34                         break;
  35
  36                 switch (c) {
  37                 case 'j':
  38                         opts->max_jobs = atoi(optarg);
  39                         break;
  40
  41                 case 'c':
  42                         opts->config_file = optarg;
  43                         break;
  44
  45                 case '?':
  46                         return -1;
  47                 }
  48         }
  49         return 0;
  50 }
  51
  52 int main(int argc, char *argv[])
  53 {
  54         struct user_options opts;
  55         struct rrd_database *db, **db_list = NULL;
  56         int sleeptime;
  57         int ret = 0;
  58
  59         bzero(&opts, sizeof(opts));
  60
  61         if (read_args(argc, argv, &opts) < 0)
  62                 return -1;
  63
  64         register_built_in_parsers();
  65
  66         if (!opts.config_file) {
  67                 pr_err("No database config file given. Nothing to do\n");
  68                 return 1;
  69         }
  70
  71         db_list = populate_database(opts.config_file);
  72
  73         if (ret || !db_list)
  74                 return 1;
  75
  76         if (rrdtool_create_missing_databases(db_list))
  77                 return 1;
  78
  79         if (init_jobcontrol(opts.max_jobs))
  80                 return -1;
  81
  82         while (1) {
  83                 const char *db_name;
  84                 char timestr[128];
  85                 time_t t;
  86
  87                 pr_info("loop start\n");
  88                 /*
  89                  * Update all databases parallel in one shot
  90                  */
  91                 while ((db = get_outdated_db(db_list)))
  92                         rrdtool_update_data(db);
  93
  94                 sleeptime = get_next_update(db_list, &db_name);
  95
  96                 t = time(0) + sleeptime;
  97                 strftime(timestr, sizeof(timestr), "%T", localtime(&t));
  98                 pr_info("Next scheduled event \"%s\" at %s, in %d seconds\n",
  99                         db_name, timestr, sleeptime);
 100
 101                 poll_job_requests(sleeptime);
 102         }
 103         return 0;
 104 }