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 "version.h"
   7 #include "process.h"
   8 #include "rrdtool.h"
   9 #include "parser.h"
  10 #include "debug.h"
  11
  12 #include "config.h"
  13 #include "built_in_parsers.h"
  14
  15 #include "plugin_manager.h"
  16
  17 struct user_options {
  18         int max_jobs;
  19         char *config_file;
  20 };
  21
  22 int read_args(int argc, char *argv[], struct user_options *opts)
  23 {
  24         int option_index = 0, c;
  25         static struct option long_options[] = {
  26                 { .val = 'j', .has_arg = 1, .name = "jobs", },
  27                 { .val = 'c', .has_arg = 1, .name = "config", },
  28                 { },
  29         };
  30         char short_options[] = "j:c:";
  31
  32         while (1) {
  33                 c = getopt_long(argc, argv, short_options, long_options,
  34                                 &option_index);
  35
  36                 if (c == -1)
  37                         break;
  38
  39                 switch (c) {
  40                 case 'j':
  41                         opts->max_jobs = atoi(optarg);
  42                         break;
  43
  44                 case 'c':
  45                         opts->config_file = optarg;
  46                         break;
  47
  48                 case '?':
  49                         return -1;
  50                 }
  51         }
  52
  53         while (optind < argc) {
  54                 opts->config_file = argv[optind];
  55                 optind++;
  56         }
  57
  58         return 0;
  59 }
  60
  61 int main(int argc, char *argv[])
  62 {
  63         struct user_options opts;
  64         struct rrd_database *db, **db_list = NULL;
  65         int sleeptime;
  66         int ret = 0;
  67
  68         pr_info("%s Version %s starting\n", argv[0], RRDD_VERSION);
  69
  70         bzero(&opts, sizeof(opts));
  71
  72         if (read_args(argc, argv, &opts) < 0)
  73                 return -1;
  74
  75         init_plugin_manager(argv[0]);
  76         register_built_in_parsers();
  77
  78         if (!opts.config_file) {
  79                 pr_err("No database config file given. Nothing to do\n");
  80                 return 1;
  81         }
  82
  83         db_list = populate_database(opts.config_file);
  84
  85         if (ret || !db_list)
  86                 return 1;
  87
  88         if (rrdtool_create_missing_databases(db_list))
  89                 return 1;
  90
  91         if (init_jobcontrol(opts.max_jobs))
  92                 return -1;
  93
  94         while (1) {
  95                 const char *db_name;
  96                 char timestr[128];
  97                 time_t t;
  98
  99                 pr_info("loop start\n");
 100                 /*
 101                  * Update all databases parallel in one shot
 102                  */
 103                 while ((db = get_outdated_db(db_list)))
 104                         rrdtool_update_data(db);
 105
 106                 sleeptime = get_next_update(db_list, &db_name);
 107
 108                 t = time(0) + sleeptime;
 109                 strftime(timestr, sizeof(timestr), "%T", localtime(&t));
 110                 pr_info("Next scheduled event \"%s\" at %s, in %d seconds\n",
 111                         db_name, timestr, sleeptime);
 112
 113                 poll_job_requests(sleeptime);
 114         }
 115         return 0;
 116 }