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 */
unsigned long step_tmp = 1;
time_t start_tmp = 0, end_tmp = 0;
const char *cf;
char *opt_daemon = NULL;
int align_start = 0;
int status;
rrd_time_value_t start_tv, end_tv;
const char *parsetime_error = NULL;
struct option long_options[] = {
{"resolution", required_argument, 0, 'r'},
{"start", required_argument, 0, 's'},
{"end", required_argument, 0, 'e'},
{"align-start", optional_argument, 0, 'a'},
{"daemon", required_argument, 0, 'd'},
{0, 0, 0, 0}
};
optind = 0;
opterr = 0; /* initialize getopt */
/* init start and end time */
rrd_parsetime("end-24h", &start_tv);
rrd_parsetime("now", &end_tv);
while (1) {
int option_index = 0;
int opt;
opt = getopt_long(argc, argv, "ar:s:e:d:", long_options, &option_index);
if (opt == EOF)
break;
switch (opt) {
case 's':
if ((parsetime_error = rrd_parsetime(optarg, &start_tv))) {
rrd_set_error("start time: %s", parsetime_error);
return -1;
}
break;
case 'e':
if ((parsetime_error = rrd_parsetime(optarg, &end_tv))) {
rrd_set_error("end time: %s", parsetime_error);
return -1;
}
break;
case 'a':
align_start = 1;
break;
case 'r':
if ((parsetime_error = rrd_scaled_duration(optarg, 1, &step_tmp))) {
rrd_set_error("resolution: %s", parsetime_error);
return -1;
}
break;
case 'd':
if (opt_daemon != NULL)
free (opt_daemon);
opt_daemon = strdup (optarg);
if (opt_daemon == NULL)
{
rrd_set_error ("strdup failed.");
return (-1);
}
break;
case '?':
rrd_set_error("unknown option '-%c'", optopt);
return (-1);
}
}
if (rrd_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 (align_start) {
time_t delta = (start_tmp % step_tmp);
start_tmp -= delta;
end_tmp -= delta;
}
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;
*step = step_tmp;
if (optind + 1 >= argc) {
rrd_set_error("Usage: rrdtool %s <file> <CF> [options]", argv[0]);
return -1;
}
cf = argv[optind + 1];
rrdc_connect (opt_daemon);
if (rrdc_is_connected (opt_daemon))
status = rrdc_fetch (argv[optind], cf, start, end, step,
ds_cnt, ds_namv, data);
else
status = rrd_fetch_r(argv[optind], cf, start, end, step,
ds_cnt, ds_namv, data);
if (status != 0)
return (-1);
return (0);
}
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 */
unsigned long step_tmp = 1;
time_t start_tmp = 0, end_tmp = 0;
const char *cf;
char *opt_daemon = NULL;
int align_start = 0;
int status;
rrd_time_value_t start_tv, end_tv;
const char *parsetime_error = NULL;
struct optparse_long longopts[] = {
{"resolution", 'r', OPTPARSE_REQUIRED},
{"start", 's', OPTPARSE_REQUIRED},
{"end", 'e', OPTPARSE_REQUIRED},
{"align-start", 'a', OPTPARSE_NONE},
{"daemon", 'd', OPTPARSE_REQUIRED},
{0},
};
struct optparse options;
int opt;
/* init start and end time */
rrd_parsetime("end-24h", &start_tv);
rrd_parsetime("now", &end_tv);
optparse_init(&options, argc, argv);
while ((opt = optparse_long(&options, longopts, NULL)) != -1) {
switch (opt) {
case 's':
if ((parsetime_error = rrd_parsetime(options.optarg, &start_tv))) {
rrd_set_error("start time: %s", parsetime_error);
return -1;
}
break;
case 'e':
if ((parsetime_error = rrd_parsetime(options.optarg, &end_tv))) {
rrd_set_error("end time: %s", parsetime_error);
return -1;
}
break;
case 'a':
align_start = 1;
break;
case 'r':
if ((parsetime_error = rrd_scaled_duration(options.optarg, 1, &step_tmp))) {
rrd_set_error("resolution: %s", parsetime_error);
return -1;
}
break;
case 'd':
if (opt_daemon != NULL)
free (opt_daemon);
opt_daemon = strdup(options.optarg);
if (opt_daemon == NULL)
{
rrd_set_error ("strdup failed.");
return -1;
}
break;
case '?':
rrd_set_error("%s", options.errmsg);
return -1;
}
}
if (rrd_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 (align_start) {
time_t delta = (start_tmp % step_tmp);
start_tmp -= delta;
end_tmp -= delta;
}
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;
*step = step_tmp;
if (options.optind + 1 >= options.argc) {
rrd_set_error("Usage: rrdtool %s <file> <CF> [options]", options.argv[0]);
return -1;
}
cf = options.argv[options.optind + 1];
rrdc_connect (opt_daemon);
if (rrdc_is_connected (opt_daemon))
status = rrdc_fetch (options.argv[options.optind],
cf, start, end, step, ds_cnt, ds_namv, data);
else
status = rrd_fetch_r(options.argv[options.optind],
cf, start, end, step, ds_cnt, ds_namv, data);
if (status != 0)
return (-1);
return (0);
}
