int rrd_fetch_r(
const char *filename, /* name of the rrd */
const char *cf, /* which consolidation function ? */
time_t *start,
time_t *end, /* which time frame do you want ?
* will be changed to represent reality */
unsigned long *step, /* which stepsize do you want?
* will be changed to represent reality */
unsigned long *ds_cnt, /* number of data sources in file */
char ***ds_namv, /* names of data_sources */
rrd_value_t **data)
{ /* two dimensional array containing the data */
enum cf_en cf_idx;
if ((int) (cf_idx = cf_conv(cf)) == -1) {
return -1;
}
return (rrd_fetch_fn
(filename, cf_idx, start, end, step, ds_cnt, ds_namv, data));
} /* int rrd_fetch_r */
int
rrd_fetch(int argc,
char **argv,
time_t *start,
time_t *end, /* which time frame do you want ?
* will be changed to represent reality */
unsigned long *step, /* which stepsize do you want?
* will be changed to represent reality */
unsigned long *ds_cnt, /* number of data sources in file */
char ***ds_namv, /* names of data sources */
rrd_value_t **data) /* two dimensional array containing the data */
{
long step_tmp =1;
time_t start_tmp=0, end_tmp=0;
enum cf_en cf_idx;
struct rrd_time_value start_tv, end_tv;
char *parsetime_error = NULL;
optind = 0; opterr = 0; /* initialize getopt */
/* init start and end time */
parsetime("end-24h", &start_tv);
parsetime("now", &end_tv);
while (1){
static struct option long_options[] =
{
{"resolution", required_argument, 0, 'r'},
{"start", required_argument, 0, 's'},
{"end", required_argument, 0, 'e'},
{0,0,0,0}
};
int option_index = 0;
int opt;
opt = getopt_long(argc, argv, "r:s:e:",
long_options, &option_index);
if (opt == EOF)
break;
switch(opt) {
case 's':
if ((parsetime_error = parsetime(optarg, &start_tv))) {
rrd_set_error( "start time: %s", parsetime_error );
return -1;
}
break;
case 'e':
if ((parsetime_error = parsetime(optarg, &end_tv))) {
rrd_set_error( "end time: %s", parsetime_error );
return -1;
}
break;
case 'r':
step_tmp = atol(optarg);
break;
case '?':
rrd_set_error("unknown option '-%c'",optopt);
return(-1);
}
}
if (proc_start_end(&start_tv,&end_tv,&start_tmp,&end_tmp) == -1){
return -1;
}
if (start_tmp < 3600*24*365*10){
rrd_set_error("the first entry to fetch should be after 1980");
return(-1);
}
if (end_tmp < start_tmp) {
rrd_set_error("start (%ld) should be less than end (%ld)", start_tmp, end_tmp);
return(-1);
}
*start = start_tmp;
*end = end_tmp;
if (step_tmp < 1) {
rrd_set_error("step must be >= 1 second");
return -1;
}
*step = step_tmp;
if (optind + 1 >= argc){
rrd_set_error("not enough arguments");
return -1;
}
if ((int)(cf_idx=cf_conv(argv[optind+1])) == -1 ){
return -1;
}
if (rrd_fetch_fn(argv[optind],cf_idx,start,end,step,ds_cnt,ds_namv,data) == -1)
return(-1);
return (0);
}
