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                 { .val = 'l', .has_arg = 1, .name = "log-file", },
  29                 { },
  30         };
  31         char short_options[] = "j:c:l:";
  32
  33         while (1) {
  34                 c = getopt_long(argc, argv, short_options, long_options,
  35                                 &option_index);
  36
  37                 if (c == -1)
  38                         break;
  39
  40                 switch (c) {
  41                 case 'j':
  42                         opts->max_jobs = atoi(optarg);
  43                         break;
  44
  45                 case 'c':
  46                         opts->config_file = optarg;
  47                         break;
  48
  49                 case 'l':
  50                         open_log_file(optarg);
  51                         break;
  52
  53                 case '?':
  54                         return -1;
  55                 }
  56         }
  57
  58         while (optind < argc) {
  59                 opts->config_file = argv[optind];
  60                 optind++;
  61         }
  62
  63         return 0;
  64 }
  65
  66 int main(int argc, char *argv[])
  67 {
  68         struct user_options opts;
  69         struct rrd_database *db, **db_list = NULL;
  70         int sleeptime;
  71         int ret = 0;
  72
  73         pr_info("%s Version %s starting\n", argv[0], RRDD_VERSION);
  74
  75         bzero(&opts, sizeof(opts));
  76
  77         if (read_args(argc, argv, &opts) < 0)
  78                 return -1;
  79
  80         init_plugin_manager(argv[0]);
  81         register_built_in_parsers();
  82
  83         if (!opts.config_file) {
  84                 pr_err("No database config file given. Nothing to do\n");
  85                 return 1;
  86         }
  87
  88         db_list = populate_database(opts.config_file);
  89
  90         if (ret || !db_list)
  91                 return 1;
  92
  93         if (rrdtool_create_missing_databases(db_list))
  94                 return 1;
  95
  96         if (init_jobcontrol(opts.max_jobs))
  97                 return -1;
  98
  99         while (1) {
 100                 const char *db_name;
 101                 char timestr[128];
 102                 time_t t;
 103
 104                 pr_info("loop start\n");
 105                 /*
 106                  * Update all databases parallel in one shot
 107                  */
 108                 while ((db = get_outdated_db(db_list)))
 109                         rrdtool_update_data(db);
 110
 111                 sleeptime = get_next_update(db_list, &db_name);
 112
 113                 t = time(0) + sleeptime;
 114                 strftime(timestr, sizeof(timestr), "%T", localtime(&t));
 115                 pr_info("Next scheduled event \"%s\" at %s, in %d seconds\n",
 116                         db_name, timestr, sleeptime);
 117
 118                 poll_job_requests(sleeptime);
 119         }
 120         return 0;
 121 }