+/* }}} */
+
+static threshold_t *threshold_get (const char *hostname,
+ const char *plugin, const char *plugin_instance,
+ const char *type, const char *type_instance)
+{
+ char name[6 * DATA_MAX_NAME_LEN];
+ threshold_t *th = NULL;
+
+ format_name (name, sizeof (name),
+ (hostname == NULL) ? "" : hostname,
+ (plugin == NULL) ? "" : plugin, plugin_instance,
+ (type == NULL) ? "" : type, type_instance);
+ name[sizeof (name) - 1] = '\0';
+
+ if (c_avl_get (threshold_tree, name, (void *) &th) == 0)
+ return (th);
+ else
+ return (NULL);
+} /* threshold_t *threshold_get */
+
+static threshold_t *threshold_search (const data_set_t *ds,
+ const value_list_t *vl)
+{
+ threshold_t *th;
+
+ if ((th = threshold_get (vl->host, vl->plugin, vl->plugin_instance,
+ ds->type, vl->type_instance)) != NULL)
+ return (th);
+ else if ((th = threshold_get (vl->host, vl->plugin, vl->plugin_instance,
+ ds->type, NULL)) != NULL)
+ return (th);
+ else if ((th = threshold_get (vl->host, vl->plugin, NULL,
+ ds->type, vl->type_instance)) != NULL)
+ return (th);
+ else if ((th = threshold_get (vl->host, vl->plugin, NULL,
+ ds->type, NULL)) != NULL)
+ return (th);
+ else if ((th = threshold_get (vl->host, "", NULL,
+ ds->type, vl->type_instance)) != NULL)
+ return (th);
+ else if ((th = threshold_get (vl->host, "", NULL,
+ ds->type, NULL)) != NULL)
+ return (th);
+ else if ((th = threshold_get ("", vl->plugin, vl->plugin_instance,
+ ds->type, vl->type_instance)) != NULL)
+ return (th);
+ else if ((th = threshold_get ("", vl->plugin, vl->plugin_instance,
+ ds->type, NULL)) != NULL)
+ return (th);
+ else if ((th = threshold_get ("", vl->plugin, NULL,
+ ds->type, vl->type_instance)) != NULL)
+ return (th);
+ else if ((th = threshold_get ("", vl->plugin, NULL,
+ ds->type, NULL)) != NULL)
+ return (th);
+ else if ((th = threshold_get ("", "", NULL,
+ ds->type, vl->type_instance)) != NULL)
+ return (th);
+ else if ((th = threshold_get ("", "", NULL,
+ ds->type, NULL)) != NULL)
+ return (th);
+
+ return (NULL);
+} /* threshold_t *threshold_search */
+
+int ut_check_threshold (const data_set_t *ds, const value_list_t *vl)
+{
+ threshold_t *th;
+ gauge_t *values;
+ int i;
+
+ if (threshold_tree == NULL)
+ return (0);
+ /* Is this lock really necessary? So far, thresholds are only inserted at
+ * startup. -octo */
+ pthread_mutex_lock (&threshold_lock);
+ th = threshold_search (ds, vl);
+ pthread_mutex_unlock (&threshold_lock);
+ if (th == NULL)
+ return (0);
+
+ DEBUG ("ut_check_threshold: Found matching threshold");
+
+ values = uc_get_rate (ds, vl);
+ if (values == NULL)
+ return (0);
+
+ for (i = 0; i < ds->ds_num; i++)
+ {
+ int is_inverted = 0;
+ int is_warning = 0;
+ int is_failure = 0;
+
+ if ((th->flags & UT_FLAG_INVERT) != 0)
+ is_inverted = 1;
+ if ((!isnan (th->failure_min) && (th->failure_min > values[i]))
+ || (!isnan (th->failure_max) && (th->failure_max < values[i])))
+ is_failure = is_inverted - 1;
+ if ((!isnan (th->warning_min) && (th->warning_min > values[i]))
+ || (!isnan (th->warning_max) && (th->warning_max < values[i])))
+ is_warning = is_inverted - 1;
+
+ if ((is_failure != 0) || (is_warning != 0))
+ {
+ notification_t n;
+ char *buf;
+ size_t bufsize;
+ int status;
+
+ double min;
+ double max;
+
+ min = (is_failure != 0) ? th->failure_min : th->warning_min;
+ max = (is_failure != 0) ? th->failure_max : th->warning_max;
+
+ DEBUG ("ut_check_threshold: ds[%s]: %lf <= !%lf <= %lf (invert: %s)",
+ ds->ds[i].name, min, values[i], max,
+ is_inverted ? "true" : "false");
+
+ /* Copy the associative members */
+ NOTIFICATION_INIT_VL (&n, vl, ds);
+
+ n.severity = (is_failure != 0) ? NOTIF_FAILURE : NOTIF_WARNING;
+ n.time = vl->time;
+
+ buf = n.message;
+ bufsize = sizeof (n.message);
+
+ 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", ds->type);
+ buf += status;
+ bufsize -= status;
+
+ if (vl->type_instance[0] != '\0')
+ {
+ status = snprintf (buf, bufsize, " (instance %s)",
+ vl->type_instance);
+ buf += status;
+ bufsize -= status;
+ }
+
+ if (is_inverted)
+ {
+ if (!isnan (min) && !isnan (max))
+ {
+ status = snprintf (buf, bufsize, ": Data source \"%s\" is currently "
+ "%f. That is within the %s region of %f and %f.",
+ ds->ds[i].name, values[i],
+ (is_failure != 0) ? "failure" : "warning",
+ min, min);
+ }
+ else
+ {
+ status = snprintf (buf, bufsize, ": Data source \"%s\" is currently "
+ "%f. That is %s the %s threshold of %f.",
+ ds->ds[i].name, values[i],
+ isnan (min) ? "below" : "above",
+ (is_failure != 0) ? "failure" : "warning",
+ isnan (min) ? max : min);
+ }
+ }
+ else /* (!is_inverted) */
+ {
+ status = snprintf (buf, bufsize, ": Data source \"%s\" is currently "
+ "%f. That is %s the %s threshold of %f.",
+ ds->ds[i].name, values[i],
+ (values[i] < min) ? "below" : "above",
+ (is_failure != 0) ? "failure" : "warning",
+ (values[i] < min) ? min : max);
+ }
+ buf += status;
+ bufsize -= status;
+
+ plugin_dispatch_notification (&n);
+ }
+ } /* for (i = 0; i < ds->ds_num; i++) */
+
+ sfree (values);
+
+ return (0);
+} /* int ut_check_threshold */
+
+int ut_check_interesting (const char *name)
+{
+ char *name_copy = NULL;
+ char *host = NULL;
+ char *plugin = NULL;
+ char *plugin_instance = NULL;
+ char *type = NULL;
+ char *type_instance = NULL;
+ int status;
+ data_set_t ds;
+ value_list_t vl;
+ threshold_t *th;
+
+ /* If there is no tree nothing is interesting. */
+ if (threshold_tree == NULL)
+ return (0);
+
+ name_copy = strdup (name);
+ if (name_copy == NULL)
+ {
+ ERROR ("ut_check_interesting: strdup failed.");
+ return (-1);
+ }
+
+ status = parse_identifier (name_copy, &host,
+ &plugin, &plugin_instance, &type, &type_instance);
+ if (status != 0)
+ {
+ ERROR ("ut_check_interesting: parse_identifier failed.");
+ return (-1);
+ }
+
+ memset (&ds, '\0', sizeof (ds));
+ memset (&vl, '\0', sizeof (vl));
+
+ strncpy (vl.host, host, sizeof (vl.host));
+ vl.host[sizeof (vl.host) - 1] = '\0';
+ strncpy (vl.plugin, plugin, sizeof (vl.plugin));
+ vl.plugin[sizeof (vl.plugin) - 1] = '\0';
+ if (plugin_instance != NULL)
+ {
+ strncpy (vl.plugin_instance, plugin_instance, sizeof (vl.plugin_instance));
+ vl.plugin_instance[sizeof (vl.plugin_instance) - 1] = '\0';
+ }
+ strncpy (ds.type, type, sizeof (ds.type));
+ ds.type[sizeof (ds.type) - 1] = '\0';
+ if (type_instance != NULL)
+ {
+ strncpy (vl.type_instance, type_instance, sizeof (vl.type_instance));
+ vl.type_instance[sizeof (vl.type_instance) - 1] = '\0';
+ }
+
+ sfree (name_copy);
+ host = plugin = plugin_instance = type = type_instance = NULL;
+
+ th = threshold_search (&ds, &vl);
+ if (th == NULL)
+ return (0);
+ if ((th->flags & UT_FLAG_PERSIST) == 0)
+ return (1);
+ return (2);
+} /* int ut_check_interesting */