/*
* int ut_report_state
*
* Checks if the `state' differs from the old state and creates a notification
* if appropriate.
* Does not fail.
*/
static int ut_report_state (const data_set_t *ds,
const value_list_t *vl,
const threshold_t *th,
const gauge_t *values,
int ds_index,
int state)
{ /* {{{ */
int state_old;
notification_t n;
char *buf;
size_t bufsize;
int status;
state_old = uc_get_state (ds, vl);
/* If the state didn't change, only report if `persistent' is specified and
* the state is not `okay'. */
if (state == state_old)
{
if ((th->flags & UT_FLAG_PERSIST) == 0)
return (0);
else if (state == STATE_OKAY)
return (0);
}
if (state != state_old)
uc_set_state (ds, vl, state);
NOTIFICATION_INIT_VL (&n, vl, ds);
buf = n.message;
bufsize = sizeof (n.message);
if (state == STATE_OKAY)
n.severity = NOTIF_OKAY;
else if (state == STATE_WARNING)
n.severity = NOTIF_WARNING;
else
n.severity = NOTIF_FAILURE;
n.time = vl->time;
status = ssnprintf (buf, bufsize, "Host %s, plugin %s",
vl->host, vl->plugin);
buf += status;
bufsize -= status;
if (vl->plugin_instance[0] != '\0')
{
status = ssnprintf (buf, bufsize, " (instance %s)",
vl->plugin_instance);
buf += status;
bufsize -= status;
}
status = ssnprintf (buf, bufsize, " type %s", vl->type);
buf += status;
bufsize -= status;
if (vl->type_instance[0] != '\0')
{
status = ssnprintf (buf, bufsize, " (instance %s)",
vl->type_instance);
buf += status;
bufsize -= status;
}
plugin_notification_meta_add_string (&n, "DataSource",
ds->ds[ds_index].name);
plugin_notification_meta_add_double (&n, "CurrentValue", values[ds_index]);
plugin_notification_meta_add_double (&n, "WarningMin", th->warning_min);
plugin_notification_meta_add_double (&n, "WarningMax", th->warning_max);
plugin_notification_meta_add_double (&n, "FailureMin", th->failure_min);
plugin_notification_meta_add_double (&n, "FailureMax", th->failure_max);
/* Send an okay notification */
if (state == STATE_OKAY)
{
status = ssnprintf (buf, bufsize, ": All data sources are within range again.");
buf += status;
bufsize -= status;
}
else
{
double min;
double max;
min = (state == STATE_ERROR) ? th->failure_min : th->warning_min;
max = (state == STATE_ERROR) ? th->failure_max : th->warning_max;
if (th->flags & UT_FLAG_INVERT)
{
if (!isnan (min) && !isnan (max))
{
status = ssnprintf (buf, bufsize, ": Data source \"%s\" is currently "
"%f. That is within the %s region of %f and %f.",
ds->ds[ds_index].name, values[ds_index],
(state == STATE_ERROR) ? "failure" : "warning",
min, max);
}
else
{
status = ssnprintf (buf, bufsize, ": Data source \"%s\" is currently "
"%f. That is %s the %s threshold of %f.",
ds->ds[ds_index].name, values[ds_index],
isnan (min) ? "below" : "above",
(state == STATE_ERROR) ? "failure" : "warning",
isnan (min) ? max : min);
}
}
else /* is not inverted */
{
status = ssnprintf (buf, bufsize, ": Data source \"%s\" is currently "
"%f. That is %s the %s threshold of %f.",
ds->ds[ds_index].name, values[ds_index],
(values[ds_index] < min) ? "below" : "above",
(state == STATE_ERROR) ? "failure" : "warning",
(values[ds_index] < min) ? min : max);
}
buf += status;
bufsize -= status;
}
plugin_dispatch_notification (&n);
plugin_notification_meta_free (n.meta);
return (0);
} /* }}} int ut_report_state */
/*
* int ut_report_state
*
* Checks if the `state' differs from the old state and creates a notification
* if appropriate.
* Does not fail.
*/
static int ut_report_state(const data_set_t *ds, const value_list_t *vl,
const threshold_t *th, const gauge_t *values,
int ds_index, int state) { /* {{{ */
int state_old;
notification_t n;
char *buf;
size_t bufsize;
int status;
/* Check if hits matched */
if ((th->hits != 0)) {
int hits = uc_get_hits(ds, vl);
/* STATE_OKAY resets hits unless PERSIST_OK flag is set. Hits resets if
* threshold is hit. */
if (((state == STATE_OKAY) && ((th->flags & UT_FLAG_PERSIST_OK) == 0)) ||
(hits > th->hits)) {
DEBUG("ut_report_state: reset uc_get_hits = 0");
uc_set_hits(ds, vl, 0); /* reset hit counter and notify */
} else {
DEBUG("ut_report_state: th->hits = %d, uc_get_hits = %d", th->hits,
uc_get_hits(ds, vl));
(void)uc_inc_hits(ds, vl, 1); /* increase hit counter */
return 0;
}
} /* end check hits */
state_old = uc_get_state(ds, vl);
/* If the state didn't change, report if `persistent' is specified. If the
* state is `okay', then only report if `persist_ok` flag is set. */
if (state == state_old) {
if ((th->flags & UT_FLAG_PERSIST) == 0)
return 0;
else if ((state == STATE_OKAY) && ((th->flags & UT_FLAG_PERSIST_OK) == 0))
return 0;
}
if (state != state_old)
uc_set_state(ds, vl, state);
NOTIFICATION_INIT_VL(&n, vl);
buf = n.message;
bufsize = sizeof(n.message);
if (state == STATE_OKAY)
n.severity = NOTIF_OKAY;
else if (state == STATE_WARNING)
n.severity = NOTIF_WARNING;
else
n.severity = NOTIF_FAILURE;
n.time = vl->time;
status = snprintf(buf, bufsize, "Host %s, plugin %s", vl->host, vl->plugin);
buf += status;
bufsize -= status;
if (vl->plugin_instance[0] != '\0') {
status = snprintf(buf, bufsize, " (instance %s)", vl->plugin_instance);
buf += status;
bufsize -= status;
}
status = snprintf(buf, bufsize, " type %s", vl->type);
buf += status;
bufsize -= status;
if (vl->type_instance[0] != '\0') {
status = snprintf(buf, bufsize, " (instance %s)", vl->type_instance);
buf += status;
bufsize -= status;
}
plugin_notification_meta_add_string(&n, "DataSource", ds->ds[ds_index].name);
plugin_notification_meta_add_double(&n, "CurrentValue", values[ds_index]);
plugin_notification_meta_add_double(&n, "WarningMin", th->warning_min);
plugin_notification_meta_add_double(&n, "WarningMax", th->warning_max);
plugin_notification_meta_add_double(&n, "FailureMin", th->failure_min);
plugin_notification_meta_add_double(&n, "FailureMax", th->failure_max);
/* Send an okay notification */
if (state == STATE_OKAY) {
if (state_old == STATE_MISSING)
snprintf(buf, bufsize, ": Value is no longer missing.");
else
snprintf(buf, bufsize, ": All data sources are within range again. "
"Current value of \"%s\" is %f.",
ds->ds[ds_index].name, values[ds_index]);
} else {
double min;
double max;
min = (state == STATE_ERROR) ? th->failure_min : th->warning_min;
max = (state == STATE_ERROR) ? th->failure_max : th->warning_max;
if (th->flags & UT_FLAG_INVERT) {
if (!isnan(min) && !isnan(max)) {
snprintf(buf, bufsize,
": Data source \"%s\" is currently "
"%f. That is within the %s region of %f%s and %f%s.",
ds->ds[ds_index].name, values[ds_index],
(state == STATE_ERROR) ? "failure" : "warning", min,
((th->flags & UT_FLAG_PERCENTAGE) != 0) ? "%" : "", max,
((th->flags & UT_FLAG_PERCENTAGE) != 0) ? "%" : "");
} else {
snprintf(buf, bufsize, ": Data source \"%s\" is currently "
"%f. That is %s the %s threshold of %f%s.",
ds->ds[ds_index].name, values[ds_index],
isnan(min) ? "below" : "above",
(state == STATE_ERROR) ? "failure" : "warning",
isnan(min) ? max : min,
((th->flags & UT_FLAG_PERCENTAGE) != 0) ? "%" : "");
}
} else if (th->flags & UT_FLAG_PERCENTAGE) {
gauge_t value;
gauge_t sum;
sum = 0.0;
for (size_t i = 0; i < vl->values_len; i++) {
if (isnan(values[i]))
continue;
sum += values[i];
}
if (sum == 0.0)
value = NAN;
else
value = 100.0 * values[ds_index] / sum;
snprintf(buf, bufsize,
": Data source \"%s\" is currently "
"%g (%.2f%%). That is %s the %s threshold of %.2f%%.",
ds->ds[ds_index].name, values[ds_index], value,
(value < min) ? "below" : "above",
(state == STATE_ERROR) ? "failure" : "warning",
(value < min) ? min : max);
} else /* is not inverted */
{
snprintf(buf, bufsize, ": Data source \"%s\" is currently "
"%f. That is %s the %s threshold of %f.",
ds->ds[ds_index].name, values[ds_index],
(values[ds_index] < min) ? "below" : "above",
(state == STATE_ERROR) ? "failure" : "warning",
(values[ds_index] < min) ? min : max);
}
}
plugin_dispatch_notification(&n);
plugin_notification_meta_free(n.meta);
return 0;
} /* }}} int ut_report_state */
int uc_update (const data_set_t *ds, const value_list_t *vl)
{
char name[6 * DATA_MAX_NAME_LEN];
cache_entry_t *ce = NULL;
int send_okay_notification = 0;
time_t update_delay = 0;
notification_t n;
int status;
int i;
if (FORMAT_VL (name, sizeof (name), vl) != 0)
{
ERROR ("uc_update: FORMAT_VL failed.");
return (-1);
}
pthread_mutex_lock (&cache_lock);
status = c_avl_get (cache_tree, name, (void *) &ce);
if (status != 0) /* entry does not yet exist */
{
status = uc_insert (ds, vl, name);
pthread_mutex_unlock (&cache_lock);
return (status);
}
assert (ce != NULL);
assert (ce->values_num == ds->ds_num);
if (ce->last_time >= vl->time)
{
pthread_mutex_unlock (&cache_lock);
NOTICE ("uc_update: Value too old: name = %s; value time = %u; "
"last cache update = %u;",
name, (unsigned int) vl->time, (unsigned int) ce->last_time);
return (-1);
}
/* Send a notification (after the lock has been released) if we switch the
* state from something else to `okay'. */
if (ce->state == STATE_MISSING)
{
send_okay_notification = 1;
ce->state = STATE_OKAY;
update_delay = time (NULL) - ce->last_update;
}
for (i = 0; i < ds->ds_num; i++)
{
switch (ds->ds[i].type)
{
case DS_TYPE_COUNTER:
{
counter_t diff;
/* check if the counter has wrapped around */
if (vl->values[i].counter < ce->values_raw[i].counter)
{
if (ce->values_raw[i].counter <= 4294967295U)
diff = (4294967295U - ce->values_raw[i].counter)
+ vl->values[i].counter;
else
diff = (18446744073709551615ULL - ce->values_raw[i].counter)
+ vl->values[i].counter;
}
else /* counter has NOT wrapped around */
{
diff = vl->values[i].counter - ce->values_raw[i].counter;
}
ce->values_gauge[i] = ((double) diff)
/ ((double) (vl->time - ce->last_time));
ce->values_raw[i].counter = vl->values[i].counter;
}
break;
case DS_TYPE_GAUGE:
ce->values_raw[i].gauge = vl->values[i].gauge;
ce->values_gauge[i] = vl->values[i].gauge;
break;
case DS_TYPE_DERIVE:
{
derive_t diff;
diff = vl->values[i].derive - ce->values_raw[i].derive;
ce->values_gauge[i] = ((double) diff)
/ ((double) (vl->time - ce->last_time));
ce->values_raw[i].derive = vl->values[i].derive;
}
break;
case DS_TYPE_ABSOLUTE:
ce->values_gauge[i] = ((double) vl->values[i].absolute)
/ ((double) (vl->time - ce->last_time));
ce->values_raw[i].absolute = vl->values[i].absolute;
break;
default:
/* This shouldn't happen. */
pthread_mutex_unlock (&cache_lock);
ERROR ("uc_update: Don't know how to handle data source type %i.",
ds->ds[i].type);
return (-1);
} /* switch (ds->ds[i].type) */
DEBUG ("uc_update: %s: ds[%i] = %lf", name, i, ce->values_gauge[i]);
} /* for (i) */
/* Update the history if it exists. */
if (ce->history != NULL)
{
assert (ce->history_index < ce->history_length);
for (i = 0; i < ce->values_num; i++)
{
size_t hist_idx = (ce->values_num * ce->history_index) + i;
ce->history[hist_idx] = ce->values_gauge[i];
}
assert (ce->history_length > 0);
ce->history_index = (ce->history_index + 1) % ce->history_length;
}
/* Prune invalid gauge data */
uc_check_range (ds, ce);
ce->last_time = vl->time;
ce->last_update = time (NULL);
ce->interval = vl->interval;
pthread_mutex_unlock (&cache_lock);
if (send_okay_notification == 0)
return (0);
/* Do not send okay notifications for uninteresting values, i. e. values for
* which no threshold is configured. */
status = ut_check_interesting (name);
if (status <= 0)
return (0);
/* Initialize the notification */
memset (&n, '\0', sizeof (n));
NOTIFICATION_INIT_VL (&n, vl, ds);
n.severity = NOTIF_OKAY;
n.time = vl->time;
ssnprintf (n.message, sizeof (n.message),
"Received a value for %s. It was missing for %u seconds.",
name, (unsigned int) update_delay);
plugin_dispatch_notification (&n);
return (0);
} /* int uc_update */