X-Git-Url: https://git.octo.it/?a=blobdiff_plain;f=src%2Futils_threshold.c;h=4a8df89d69e70c147e1fa8820c7884d1931b427c;hb=79d834024d69d3b33e0fc4717b6560385b54cdd1;hp=090cc75206f9c47acdde32dc5c6821bca67201aa;hpb=0384380080a39adb252a4d5dd3a6bf5c27f8faf8;p=collectd.git diff --git a/src/utils_threshold.c b/src/utils_threshold.c index 090cc752..4a8df89d 100644 --- a/src/utils_threshold.c +++ b/src/utils_threshold.c @@ -1,64 +1,54 @@ /** * collectd - src/utils_threshold.c - * Copyright (C) 2007-2009 Florian octo Forster - * Copyright (C) 2008-2009 Sebastian Harl - * Copyright (C) 2009 Andrés J. Díaz + * Copyright (C) 2014 Pierre-Yves Ritschard * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: * - * This program is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License as published by the - * Free Software Foundation; only version 2 of the License is applicable. + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE + * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - * - * Author: - * Florian octo Forster - * Sebastian Harl - * Andrés J. Díaz + * Authors: + * Pierre-Yves Ritschard **/ #include "collectd.h" #include "common.h" -#include "plugin.h" #include "utils_avltree.h" -#include "utils_cache.h" #include "utils_threshold.h" -#include #include /* - * Private data structures + * Exported symbols * {{{ */ -#define UT_FLAG_INVERT 0x01 -#define UT_FLAG_PERSIST 0x02 -#define UT_FLAG_PERCENTAGE 0x04 +c_avl_tree_t *threshold_tree = NULL; +pthread_mutex_t threshold_lock = PTHREAD_MUTEX_INITIALIZER; /* }}} */ /* - * Private (static) variables - * {{{ */ -static c_avl_tree_t *threshold_tree = NULL; -static pthread_mutex_t threshold_lock = PTHREAD_MUTEX_INITIALIZER; -/* }}} */ - -/* - * Threshold management - * ==================== - * The following functions add, delete, search, etc. configured thresholds to - * the underlying AVL trees. - * {{{ */ -static threshold_t *threshold_get (const char *hostname, + * threshold_t *threshold_get + * + * Retrieve one specific threshold configuration. For looking up a threshold + * matching a value_list_t, see "threshold_search" below. Returns NULL if the + * specified threshold doesn't exist. + */ +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; @@ -72,482 +62,18 @@ static threshold_t *threshold_get (const char *hostname, return (th); else return (NULL); -} /* threshold_t *threshold_get */ - -static int ut_threshold_add (const threshold_t *th) -{ - char name[6 * DATA_MAX_NAME_LEN]; - char *name_copy; - threshold_t *th_copy; - threshold_t *th_ptr; - int status = 0; - - if (format_name (name, sizeof (name), th->host, - th->plugin, th->plugin_instance, - th->type, th->type_instance) != 0) - { - ERROR ("ut_threshold_add: format_name failed."); - return (-1); - } - - name_copy = strdup (name); - if (name_copy == NULL) - { - ERROR ("ut_threshold_add: strdup failed."); - return (-1); - } - - th_copy = (threshold_t *) malloc (sizeof (threshold_t)); - if (th_copy == NULL) - { - sfree (name_copy); - ERROR ("ut_threshold_add: malloc failed."); - return (-1); - } - memcpy (th_copy, th, sizeof (threshold_t)); - th_ptr = NULL; - - DEBUG ("ut_threshold_add: Adding entry `%s'", name); - - pthread_mutex_lock (&threshold_lock); - - th_ptr = threshold_get (th->host, th->plugin, th->plugin_instance, - th->type, th->type_instance); - - while ((th_ptr != NULL) && (th_ptr->next != NULL)) - th_ptr = th_ptr->next; - - if (th_ptr == NULL) /* no such threshold yet */ - { - status = c_avl_insert (threshold_tree, name_copy, th_copy); - } - else /* th_ptr points to the last threshold in the list */ - { - th_ptr->next = th_copy; - /* name_copy isn't needed */ - sfree (name_copy); - } - - pthread_mutex_unlock (&threshold_lock); - - if (status != 0) - { - ERROR ("ut_threshold_add: c_avl_insert (%s) failed.", name); - sfree (name_copy); - sfree (th_copy); - } - - return (status); -} /* int ut_threshold_add */ -/* - * End of the threshold management functions - * }}} */ +} /* }}} threshold_t *threshold_get */ /* - * Configuration - * ============= - * The following approximately two hundred functions are used to handle the - * configuration and fill the threshold list. - * {{{ */ -static int ut_config_type_datasource (threshold_t *th, oconfig_item_t *ci) -{ - if ((ci->values_num != 1) - || (ci->values[0].type != OCONFIG_TYPE_STRING)) - { - WARNING ("threshold values: The `DataSource' option needs exactly one " - "string argument."); - return (-1); - } - - sstrncpy (th->data_source, ci->values[0].value.string, - sizeof (th->data_source)); - - return (0); -} /* int ut_config_type_datasource */ - -static int ut_config_type_instance (threshold_t *th, oconfig_item_t *ci) -{ - if ((ci->values_num != 1) - || (ci->values[0].type != OCONFIG_TYPE_STRING)) - { - WARNING ("threshold values: The `Instance' option needs exactly one " - "string argument."); - return (-1); - } - - sstrncpy (th->type_instance, ci->values[0].value.string, - sizeof (th->type_instance)); - - return (0); -} /* int ut_config_type_instance */ - -static int ut_config_type_max (threshold_t *th, oconfig_item_t *ci) -{ - if ((ci->values_num != 1) - || (ci->values[0].type != OCONFIG_TYPE_NUMBER)) - { - WARNING ("threshold values: The `%s' option needs exactly one " - "number argument.", ci->key); - return (-1); - } - - if (strcasecmp (ci->key, "WarningMax") == 0) - th->warning_max = ci->values[0].value.number; - else - th->failure_max = ci->values[0].value.number; - - return (0); -} /* int ut_config_type_max */ - -static int ut_config_type_min (threshold_t *th, oconfig_item_t *ci) -{ - if ((ci->values_num != 1) - || (ci->values[0].type != OCONFIG_TYPE_NUMBER)) - { - WARNING ("threshold values: The `%s' option needs exactly one " - "number argument.", ci->key); - return (-1); - } - - if (strcasecmp (ci->key, "WarningMin") == 0) - th->warning_min = ci->values[0].value.number; - else - th->failure_min = ci->values[0].value.number; - - return (0); -} /* int ut_config_type_min */ - -static int ut_config_type_invert (threshold_t *th, oconfig_item_t *ci) -{ - if ((ci->values_num != 1) - || (ci->values[0].type != OCONFIG_TYPE_BOOLEAN)) - { - WARNING ("threshold values: The `Invert' option needs exactly one " - "boolean argument."); - return (-1); - } - - if (ci->values[0].value.boolean) - th->flags |= UT_FLAG_INVERT; - else - th->flags &= ~UT_FLAG_INVERT; - - return (0); -} /* int ut_config_type_invert */ - -static int ut_config_type_persist (threshold_t *th, oconfig_item_t *ci) -{ - if ((ci->values_num != 1) - || (ci->values[0].type != OCONFIG_TYPE_BOOLEAN)) - { - WARNING ("threshold values: The `Persist' option needs exactly one " - "boolean argument."); - return (-1); - } - - if (ci->values[0].value.boolean) - th->flags |= UT_FLAG_PERSIST; - else - th->flags &= ~UT_FLAG_PERSIST; - - return (0); -} /* int ut_config_type_persist */ - -static int ut_config_type_percentage(threshold_t *th, oconfig_item_t *ci) -{ - if ((ci->values_num != 1) - || (ci->values[0].type != OCONFIG_TYPE_BOOLEAN)) - { - WARNING ("threshold values: The `Percentage' option needs exactly one " - "boolean argument."); - return (-1); - } - - if (ci->values[0].value.boolean) - th->flags |= UT_FLAG_PERCENTAGE; - else - th->flags &= ~UT_FLAG_PERCENTAGE; - - return (0); -} /* int ut_config_type_percentage */ - -static int ut_config_type_hits (threshold_t *th, oconfig_item_t *ci) -{ - if ((ci->values_num != 1) - || (ci->values[0].type != OCONFIG_TYPE_NUMBER)) - { - WARNING ("threshold values: The `%s' option needs exactly one " - "number argument.", ci->key); - return (-1); - } - - th->hits = ci->values[0].value.number; - - return (0); -} /* int ut_config_type_hits */ - -static int ut_config_type_hysteresis (threshold_t *th, oconfig_item_t *ci) -{ - if ((ci->values_num != 1) - || (ci->values[0].type != OCONFIG_TYPE_NUMBER)) - { - WARNING ("threshold values: The `%s' option needs exactly one " - "number argument.", ci->key); - return (-1); - } - - th->hysteresis = ci->values[0].value.number; - - return (0); -} /* int ut_config_type_hysteresis */ - -static int ut_config_type (const threshold_t *th_orig, oconfig_item_t *ci) -{ - int i; - threshold_t th; - int status = 0; - - if ((ci->values_num != 1) - || (ci->values[0].type != OCONFIG_TYPE_STRING)) - { - WARNING ("threshold values: The `Type' block needs exactly one string " - "argument."); - return (-1); - } - - if (ci->children_num < 1) - { - WARNING ("threshold values: The `Type' block needs at least one option."); - return (-1); - } - - memcpy (&th, th_orig, sizeof (th)); - sstrncpy (th.type, ci->values[0].value.string, sizeof (th.type)); - - th.warning_min = NAN; - th.warning_max = NAN; - th.failure_min = NAN; - th.failure_max = NAN; - th.hits = 0; - th.hysteresis = 0; - - for (i = 0; i < ci->children_num; i++) - { - oconfig_item_t *option = ci->children + i; - status = 0; - - if (strcasecmp ("Instance", option->key) == 0) - status = ut_config_type_instance (&th, option); - else if (strcasecmp ("DataSource", option->key) == 0) - status = ut_config_type_datasource (&th, option); - else if ((strcasecmp ("WarningMax", option->key) == 0) - || (strcasecmp ("FailureMax", option->key) == 0)) - status = ut_config_type_max (&th, option); - else if ((strcasecmp ("WarningMin", option->key) == 0) - || (strcasecmp ("FailureMin", option->key) == 0)) - status = ut_config_type_min (&th, option); - else if (strcasecmp ("Invert", option->key) == 0) - status = ut_config_type_invert (&th, option); - else if (strcasecmp ("Persist", option->key) == 0) - status = ut_config_type_persist (&th, option); - else if (strcasecmp ("Percentage", option->key) == 0) - status = ut_config_type_percentage (&th, option); - else if (strcasecmp ("Hits", option->key) == 0) - status = ut_config_type_hits (&th, option); - else if (strcasecmp ("Hysteresis", option->key) == 0) - status = ut_config_type_hysteresis (&th, option); - else - { - WARNING ("threshold values: Option `%s' not allowed inside a `Type' " - "block.", option->key); - status = -1; - } - - if (status != 0) - break; - } - - if (status == 0) - { - status = ut_threshold_add (&th); - } - - return (status); -} /* int ut_config_type */ - -static int ut_config_plugin_instance (threshold_t *th, oconfig_item_t *ci) -{ - if ((ci->values_num != 1) - || (ci->values[0].type != OCONFIG_TYPE_STRING)) - { - WARNING ("threshold values: The `Instance' option needs exactly one " - "string argument."); - return (-1); - } - - sstrncpy (th->plugin_instance, ci->values[0].value.string, - sizeof (th->plugin_instance)); - - return (0); -} /* int ut_config_plugin_instance */ - -static int ut_config_plugin (const threshold_t *th_orig, oconfig_item_t *ci) -{ - int i; - threshold_t th; - int status = 0; - - if ((ci->values_num != 1) - || (ci->values[0].type != OCONFIG_TYPE_STRING)) - { - WARNING ("threshold values: The `Plugin' block needs exactly one string " - "argument."); - return (-1); - } - - if (ci->children_num < 1) - { - WARNING ("threshold values: The `Plugin' block needs at least one nested " - "block."); - return (-1); - } - - memcpy (&th, th_orig, sizeof (th)); - sstrncpy (th.plugin, ci->values[0].value.string, sizeof (th.plugin)); - - for (i = 0; i < ci->children_num; i++) - { - oconfig_item_t *option = ci->children + i; - status = 0; - - if (strcasecmp ("Type", option->key) == 0) - status = ut_config_type (&th, option); - else if (strcasecmp ("Instance", option->key) == 0) - status = ut_config_plugin_instance (&th, option); - else - { - WARNING ("threshold values: Option `%s' not allowed inside a `Plugin' " - "block.", option->key); - status = -1; - } - - if (status != 0) - break; - } - - return (status); -} /* int ut_config_plugin */ - -static int ut_config_host (const threshold_t *th_orig, oconfig_item_t *ci) -{ - int i; - threshold_t th; - int status = 0; - - if ((ci->values_num != 1) - || (ci->values[0].type != OCONFIG_TYPE_STRING)) - { - WARNING ("threshold values: The `Host' block needs exactly one string " - "argument."); - return (-1); - } - - if (ci->children_num < 1) - { - WARNING ("threshold values: The `Host' block needs at least one nested " - "block."); - return (-1); - } - - memcpy (&th, th_orig, sizeof (th)); - sstrncpy (th.host, ci->values[0].value.string, sizeof (th.host)); - - for (i = 0; i < ci->children_num; i++) - { - oconfig_item_t *option = ci->children + i; - status = 0; - - if (strcasecmp ("Type", option->key) == 0) - status = ut_config_type (&th, option); - else if (strcasecmp ("Plugin", option->key) == 0) - status = ut_config_plugin (&th, option); - else - { - WARNING ("threshold values: Option `%s' not allowed inside a `Host' " - "block.", option->key); - status = -1; - } - - if (status != 0) - break; - } - - return (status); -} /* int ut_config_host */ - -int ut_config (const oconfig_item_t *ci) -{ - int i; - int status = 0; - - threshold_t th; - - if (ci->values_num != 0) - { - ERROR ("threshold values: The `Threshold' block may not have any " - "arguments."); - return (-1); - } - - if (threshold_tree == NULL) - { - threshold_tree = c_avl_create ((void *) strcmp); - if (threshold_tree == NULL) - { - ERROR ("ut_config: c_avl_create failed."); - return (-1); - } - } - - memset (&th, '\0', sizeof (th)); - th.warning_min = NAN; - th.warning_max = NAN; - th.failure_min = NAN; - th.failure_max = NAN; - - th.hits = 0; - th.hysteresis = 0; - - for (i = 0; i < ci->children_num; i++) - { - oconfig_item_t *option = ci->children + i; - status = 0; - - if (strcasecmp ("Type", option->key) == 0) - status = ut_config_type (&th, option); - else if (strcasecmp ("Plugin", option->key) == 0) - status = ut_config_plugin (&th, option); - else if (strcasecmp ("Host", option->key) == 0) - status = ut_config_host (&th, option); - else - { - WARNING ("threshold values: Option `%s' not allowed here.", option->key); - status = -1; - } - - if (status != 0) - break; - } - - return (status); -} /* int um_config */ -/* - * End of the functions used to configure threshold values. + * threshold_t *threshold_search + * + * Searches for a threshold configuration using all the possible variations of + * "Host", "Plugin" and "Type" blocks. Returns NULL if no threshold could be + * found. + * XXX: This is likely the least efficient function in collectd. */ -/* }}} */ - -static threshold_t *threshold_search (const value_list_t *vl) -{ +threshold_t *threshold_search (const value_list_t *vl) +{ /* {{{ */ threshold_t *th; if ((th = threshold_get (vl->host, vl->plugin, vl->plugin_instance, @@ -588,450 +114,7 @@ static threshold_t *threshold_search (const value_list_t *vl) return (th); return (NULL); -} /* threshold_t *threshold_search */ - -/* - * 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); - /* The STATE_OKAY always reset hits, or if hits reaise the limit */ - if ( (state == STATE_OKAY) || (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, 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%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 - { - status = ssnprintf (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 /* is not inverted */ - { - status = ssnprintf (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], - (values[ds_index] < min) ? "below" : "above", - (state == STATE_ERROR) ? "failure" : "warning", - (values[ds_index] < min) ? min : max, - ((th->flags & UT_FLAG_PERCENTAGE) != 0) ? "%" : ""); - } - buf += status; - bufsize -= status; - } - - plugin_dispatch_notification (&n); - - plugin_notification_meta_free (n.meta); - return (0); -} /* }}} int ut_report_state */ - -/* - * int ut_check_one_data_source - * - * Checks one data source against the given threshold configuration. If the - * `DataSource' option is set in the threshold, and the name does NOT match, - * `okay' is returned. If the threshold does match, its failure and warning - * min and max values are checked and `failure' or `warning' is returned if - * appropriate. - * Does not fail. - */ -static int ut_check_one_data_source (const data_set_t *ds, - const value_list_t __attribute__((unused)) *vl, - const threshold_t *th, - const gauge_t *values, - int ds_index) -{ /* {{{ */ - const char *ds_name; - int is_warning = 0; - int is_failure = 0; - int prev_state = STATE_OKAY; - - /* check if this threshold applies to this data source */ - if (ds != NULL) - { - ds_name = ds->ds[ds_index].name; - if ((th->data_source[0] != 0) - && (strcmp (ds_name, th->data_source) != 0)) - return (STATE_OKAY); - } - - if ((th->flags & UT_FLAG_INVERT) != 0) - { - is_warning--; - is_failure--; - } - - /* XXX: This is an experimental code, not optimized, not fast, not reliable, - * and probably, do not work as you expect. Enjoy! :D */ - if ( (th->hysteresis > 0) && ((prev_state = uc_get_state(ds,vl)) != STATE_OKAY) ) - { - switch(prev_state) - { - case STATE_ERROR: - if ( (!isnan (th->failure_min) && ((th->failure_min + th->hysteresis) < values[ds_index])) || - (!isnan (th->failure_max) && ((th->failure_max - th->hysteresis) > values[ds_index])) ) - return (STATE_OKAY); - else - is_failure++; - case STATE_WARNING: - if ( (!isnan (th->warning_min) && ((th->warning_min + th->hysteresis) < values[ds_index])) || - (!isnan (th->warning_max) && ((th->warning_max - th->hysteresis) > values[ds_index])) ) - return (STATE_OKAY); - else - is_warning++; - } - } - else { /* no hysteresis */ - if ((!isnan (th->failure_min) && (th->failure_min > values[ds_index])) - || (!isnan (th->failure_max) && (th->failure_max < values[ds_index]))) - is_failure++; - - if ((!isnan (th->warning_min) && (th->warning_min > values[ds_index])) - || (!isnan (th->warning_max) && (th->warning_max < values[ds_index]))) - is_warning++; - } - - if (is_failure != 0) - return (STATE_ERROR); - - if (is_warning != 0) - return (STATE_WARNING); - - return (STATE_OKAY); -} /* }}} int ut_check_one_data_source */ - -/* - * int ut_check_one_threshold - * - * Checks all data sources of a value list against the given threshold, using - * the ut_check_one_data_source function above. Returns the worst status, - * which is `okay' if nothing has failed. - * Returns less than zero if the data set doesn't have any data sources. - */ -static int ut_check_one_threshold (const data_set_t *ds, - const value_list_t *vl, - const threshold_t *th, - const gauge_t *values, - int *ret_ds_index) -{ /* {{{ */ - int ret = -1; - int ds_index = -1; - int i; - gauge_t values_copy[ds->ds_num]; - - memcpy (values_copy, values, sizeof (values_copy)); - - if ((th->flags & UT_FLAG_PERCENTAGE) != 0) - { - int num = 0; - gauge_t sum=0.0; - - if (ds->ds_num == 1) - { - WARNING ("ut_check_one_threshold: The %s type has only one data " - "source, but you have configured to check this as a percentage. " - "That doesn't make much sense, because the percentage will always " - "be 100%%!", ds->type); - } - - /* Prepare `sum' and `num'. */ - for (i = 0; i < ds->ds_num; i++) - if (!isnan (values[i])) - { - num++; - sum += values[i]; - } - - if ((num == 0) /* All data sources are undefined. */ - || (sum == 0.0)) /* Sum is zero, cannot calculate percentage. */ - { - for (i = 0; i < ds->ds_num; i++) - values_copy[i] = NAN; - } - else /* We can actually calculate the percentage. */ - { - for (i = 0; i < ds->ds_num; i++) - values_copy[i] = 100.0 * values[i] / sum; - } - } /* if (UT_FLAG_PERCENTAGE) */ - - for (i = 0; i < ds->ds_num; i++) - { - int status; - - status = ut_check_one_data_source (ds, vl, th, values_copy, i); - if (ret < status) - { - ret = status; - ds_index = i; - } - } /* for (ds->ds_num) */ - - if (ret_ds_index != NULL) - *ret_ds_index = ds_index; - - return (ret); -} /* }}} int ut_check_one_threshold */ - -/* - * int ut_check_threshold (PUBLIC) - * - * Gets a list of matching thresholds and searches for the worst status by one - * of the thresholds. Then reports that status using the ut_report_state - * function above. - * Returns zero on success and if no threshold has been configured. Returns - * less than zero on failure. - */ -int ut_check_threshold (const data_set_t *ds, const value_list_t *vl) -{ /* {{{ */ - threshold_t *th; - gauge_t *values; - int status; - - int worst_state = -1; - threshold_t *worst_th = NULL; - int worst_ds_index = -1; - - 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 (vl); - pthread_mutex_unlock (&threshold_lock); - if (th == NULL) - return (0); - - DEBUG ("ut_check_threshold: Found matching threshold(s)"); - - values = uc_get_rate (ds, vl); - if (values == NULL) - return (0); - - while (th != NULL) - { - int ds_index = -1; - - status = ut_check_one_threshold (ds, vl, th, values, &ds_index); - if (status < 0) - { - ERROR ("ut_check_threshold: ut_check_one_threshold failed."); - sfree (values); - return (-1); - } - - if (worst_state < status) - { - worst_state = status; - worst_th = th; - worst_ds_index = ds_index; - } - - th = th->next; - } /* while (th) */ - - status = ut_report_state (ds, vl, worst_th, values, - worst_ds_index, worst_state); - if (status != 0) - { - ERROR ("ut_check_threshold: ut_report_state failed."); - sfree (values); - return (-1); - } - - sfree (values); - - return (0); -} /* }}} int ut_check_threshold */ - -/* - * int ut_check_interesting (PUBLIC) - * - * Given an identification returns - * 0: No threshold is defined. - * 1: A threshold has been found. The flag `persist' is off. - * 2: A threshold has been found. The flag `persist' is on. - * (That is, it is expected that many notifications are sent until the - * problem disappears.) - */ -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."); - sfree (name_copy); - return (-1); - } - - memset (&ds, '\0', sizeof (ds)); - memset (&vl, '\0', sizeof (vl)); - - sstrncpy (vl.host, host, sizeof (vl.host)); - sstrncpy (vl.plugin, plugin, sizeof (vl.plugin)); - if (plugin_instance != NULL) - sstrncpy (vl.plugin_instance, plugin_instance, sizeof (vl.plugin_instance)); - sstrncpy (ds.type, type, sizeof (ds.type)); - sstrncpy (vl.type, type, sizeof (vl.type)); - if (type_instance != NULL) - sstrncpy (vl.type_instance, type_instance, sizeof (vl.type_instance)); - - sfree (name_copy); - host = plugin = plugin_instance = type = type_instance = NULL; - - th = threshold_search (&vl); - if (th == NULL) - return (0); - if ((th->flags & UT_FLAG_PERSIST) == 0) - return (1); - return (2); -} /* }}} int ut_check_interesting */ +} /* }}} threshold_t *threshold_search */ int ut_search_threshold (const value_list_t *vl, /* {{{ */ threshold_t *ret_threshold) @@ -1041,14 +124,20 @@ int ut_search_threshold (const value_list_t *vl, /* {{{ */ if (vl == NULL) return (EINVAL); + /* Is this lock really necessary? */ + pthread_mutex_lock (&threshold_lock); t = threshold_search (vl); - if (t == NULL) + if (t == NULL) { + pthread_mutex_unlock (&threshold_lock); return (ENOENT); + } memcpy (ret_threshold, t, sizeof (*ret_threshold)); + pthread_mutex_unlock (&threshold_lock); + ret_threshold->next = NULL; return (0); } /* }}} int ut_search_threshold */ -/* vim: set sw=2 ts=8 sts=2 tw=78 et fdm=marker : */ +