static void
foo(FILE *f, char *fn, int i)
{
pmDesc desc;
char strbuf[60];
int sts;
sts = pmLookupDesc(pmidlist[i], &desc);
if (sts < 0) {
fprintf(f, "%s: pmLookupDesc[%s] -> %s\n", fn, pmIDStr_r(pmidlist[i], strbuf, sizeof(strbuf)), pmErrStr(sts));
pthread_exit("botch");
}
else if (pmidlist[i] != desc.pmid) {
fprintf(f, "%s: pmLookupDesc: Expecting PMID: %s", fn, pmIDStr_r(pmidlist[i], strbuf, sizeof(strbuf)));
fprintf(f, " got: %s\n", pmIDStr_r(desc.pmid, strbuf, sizeof(strbuf)));
pthread_exit("botch");
}
else {
fprintf(f, "%s: %s (%s) ->", fn, namelist[i], pmIDStr_r(pmidlist[i], strbuf, sizeof(strbuf)));
fprintf(f, " %s", pmTypeStr_r(desc.type, strbuf, sizeof(strbuf)));
fprintf(f, " %s", pmInDomStr_r(desc.indom, strbuf, sizeof(strbuf)));
if (desc.sem == PM_SEM_COUNTER) fprintf(f, " counter");
else if (desc.sem == PM_SEM_INSTANT) fprintf(f, " instant");
else if (desc.sem == PM_SEM_DISCRETE) fprintf(f, " discrete");
else fprintf(f, " sem-%d", desc.sem);
fprintf(f, " %s\n", pmUnitsStr_r(&desc.units, strbuf, sizeof(strbuf)));
}
}
/*
* Called when an error PDU containing PMCD_ADD_AGENT is received.
* This function checks all of the configured metrics to make sure that
* they have not changed. For example due to a PMDA being replaced by an
* updated version
*/
void
validate_metrics(void)
{
const task_t *tp;
pmID *new_pmids;
const pmDesc *old_desc;
pmDesc new_desc;
int index;
int error;
int sts;
time_t now;
char buf1[20], buf2[20];
time(&now);
fprintf(stderr, "%s: Validating metrics after PMCD state changed at %s",
pmProgname, ctime(&now));
/*
* Check each metric in each element of the task list, whether it is
* active or not.
*/
error = 0;
for (tp = tasklist; tp != NULL; tp = tp->t_next) {
/* We need at least one metric to look up. */
if (tp->t_numpmid < 1)
continue;
/*
* Perform a bulk lookup and then check for consistency.
* Lookup the metrics by name, since that's the way they are
* specified in the pmlogger config file.
* We need a temporary array for the new pmIDs
*/
new_pmids = malloc(tp->t_numpmid * sizeof(*tp->t_pmidlist));
if (new_pmids == NULL) {
__pmNoMem("allocating pmID array for validating metrice",
tp->t_numpmid * sizeof(*tp->t_pmidlist), PM_FATAL_ERR);
}
if ((sts = pmLookupName(tp->t_numpmid, tp->t_namelist, new_pmids)) < 0) {
fprintf(stderr, "Error looking up metrics: Reason: %s\n",
pmErrStr(sts));
exit(1);
}
/* Now check the individual metrics for problems. */
for (index = 0; index < tp->t_numpmid; ++index) {
/* If there was an error looking up this metric, try again in order
* to obtain the reason. If there is no error the second time
* (possible), then the needed pmID will be fetched.
*/
if (new_pmids[index] == PM_ID_NULL) {
if ((sts = pmLookupName(1, &tp->t_namelist[index],
&new_pmids[index])) < 0) {
/* The lookup of the metric is still in error. */
fprintf(stderr, "Error looking up %s: Reason: %s\n",
tp->t_namelist[index], pmErrStr(sts));
++error;
continue;
}
/* No error the second time. Fall through */
}
/*
* Check that the pmid, type, semantics, instance domain and units
* of the metric have not changed.
*/
if (new_pmids[index] != tp->t_pmidlist[index]) {
fprintf(stderr, "PMID of metric \"%s\" has changed from %s to %s\n",
tp->t_namelist[index],
pmIDStr_r(tp->t_pmidlist[index], buf1, sizeof(buf1)),
pmIDStr_r(new_pmids[index], buf2, sizeof(buf2)));
++error;
}
if ((sts = pmLookupDesc(new_pmids[index], &new_desc)) < 0) {
fprintf(stderr, "Description unavailable for metric \"%s\": %s\n",
tp->t_namelist[index], pmErrStr(sts));
++error;
continue;
}
old_desc = &tp->t_desclist[index];
if (new_desc.type != old_desc->type) {
fprintf(stderr, "Type of metric \"%s\" has changed from %s to %s\n",
tp->t_namelist[index],
pmTypeStr_r(old_desc->type, buf1, sizeof(buf1)),
pmTypeStr_r(new_desc.type, buf2, sizeof(buf2)));
++error;
}
if (new_desc.sem != old_desc->sem) {
fprintf(stderr, "Semantics of metric \"%s\" have changed from %s to %s\n",
tp->t_namelist[index],
pmSemStr_r(old_desc->sem, buf1, sizeof(buf1)),
pmSemStr_r(new_desc.sem, buf2, sizeof(buf2)));
++error;
}
if (new_desc.indom != old_desc->indom) {
fprintf(stderr, "Instance domain of metric \"%s\" has changed from %s to %s\n",
tp->t_namelist[index],
pmInDomStr_r(old_desc->indom, buf1, sizeof(buf1)),
pmInDomStr_r(new_desc.indom, buf2, sizeof(buf2)));
++error;
}
if (new_desc.units.dimSpace != old_desc->units.dimSpace ||
new_desc.units.dimTime != old_desc->units.dimTime ||
new_desc.units.dimCount != old_desc->units.dimCount ||
new_desc.units.scaleSpace != old_desc->units.scaleSpace ||
new_desc.units.scaleTime != old_desc->units.scaleTime ||
new_desc.units.scaleCount != old_desc->units.scaleCount) {
++error;
fprintf(stderr, "Units of metric \"%s\" has changed from %s to %s\n",
tp->t_namelist[index],
pmUnitsStr_r(&old_desc->units, buf1, sizeof(buf1)),
pmUnitsStr_r(&new_desc.units, buf2, sizeof(buf2)));
}
} /* loop over metrics */
free(new_pmids);
} /* Loop over task list */
/* We cannot continue, if any of the metrics have changed. */
if (error) {
fprintf(stderr, "One or more configured metrics have changed after pmcd state change. Exiting\n");
exit(1);
}
}
