=head1 DESCRIPTION
-The C<exec plugin> forks of an executable either to receive values or to
+The C<exec plugin> forks off an executable either to receive values or to
dispatch notifications to the outside world. The syntax of the configuration is
explained in L<collectd.conf(5)> but summarized in the above synopsis.
See L<EXEC DATA FORMAT> below for a description of the output format expected
from these programs.
-B<Warning:> If the executable only writes one value and then exits I will be
+B<Warning:> If the executable only writes one value and then exits it will be
executed every I<Interval> seconds. If I<Interval> is short (the default is 10
seconds) this may result in serious system load.
=item B<AlwaysAppendDS> B<false>|B<true>
-If set the B<true>, append the name of the I<Data Source> (DS) to the
+If set to B<true>, append the name of the I<Data Source> (DS) to the
"service", i.e. the field that, together with the "host" field, uniquely
identifies a metric in I<Riemann>. If set to B<false> (the default), this is
only done when there is more than one DS.
char *value_ptr;
int status;
redisReply *rr;
- int i;
status = FORMAT_VL (ident, sizeof (ident), vl);
if (status != 0)
memset (value, 0, sizeof (value));
value_size = sizeof (value);
value_ptr = &value[0];
-
-#define APPEND(...) do { \
- status = snprintf (value_ptr, value_size, __VA_ARGS__); \
- if (((size_t) status) > value_size) \
- { \
- value_ptr += value_size; \
- value_size = 0; \
- } \
- else \
- { \
- value_ptr += status; \
- value_size -= status; \
- } \
-} while (0)
-
- APPEND ("%s:", time);
-
- for (i = 0; i < ds->ds_num; i++)
- {
- if (ds->ds[i].type == DS_TYPE_COUNTER)
- APPEND ("%llu", vl->values[i].counter);
- else if (ds->ds[i].type == DS_TYPE_GAUGE)
- APPEND (GAUGE_FORMAT, vl->values[i].gauge);
- else if (ds->ds[i].type == DS_TYPE_DERIVE)
- APPEND ("%"PRIi64, vl->values[i].derive);
- else if (ds->ds[i].type == DS_TYPE_ABSOLUTE)
- APPEND ("%"PRIu64, vl->values[i].absolute);
- else
- assert (23 == 42);
- }
-
-#undef APPEND
-
status = format_values (value_ptr, value_size, ds, vl, /* store rates = */ 0);
pthread_mutex_lock (&node->lock);
if (status != 0)