submit mysql_bpool_bytes as gauge

[collectd.git] / src / utils_threshold.c

diff --git a/src/utils_threshold.c b/src/utils_threshold.c
index 005c49c..4a8df89 100644 (file)
--- a/src/utils_threshold.c
+++ b/src/utils_threshold.c
@@ -1,21 +1,26 @@
 /**
  * collectd - src/utils_threshold.c
- * Copyright (C) 2014 Pierre-Yves Ritschard
+ * Copyright (C) 2014       Pierre-Yves Ritschard
  *
- * 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.
+ * 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 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 above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of 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
+ * 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.
  *
- * Author:
+ * Authors:
  *   Pierre-Yves Ritschard <pyr at spootnik.org>
  **/
 
@@ -32,3 +37,107 @@
 c_avl_tree_t   *threshold_tree = NULL;
 pthread_mutex_t threshold_lock = PTHREAD_MUTEX_INITIALIZER;
 /* }}} */
+
+/*
+ * 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;
+
+  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 */
+
+/*
+ * 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.
+ */
+threshold_t *threshold_search (const value_list_t *vl)
+{ /* {{{ */
+  threshold_t *th;
+
+  if ((th = threshold_get (vl->host, vl->plugin, vl->plugin_instance,
+         vl->type, vl->type_instance)) != NULL)
+    return (th);
+  else if ((th = threshold_get (vl->host, vl->plugin, vl->plugin_instance,
+         vl->type, NULL)) != NULL)
+    return (th);
+  else if ((th = threshold_get (vl->host, vl->plugin, NULL,
+         vl->type, vl->type_instance)) != NULL)
+    return (th);
+  else if ((th = threshold_get (vl->host, vl->plugin, NULL,
+         vl->type, NULL)) != NULL)
+    return (th);
+  else if ((th = threshold_get (vl->host, "", NULL,
+         vl->type, vl->type_instance)) != NULL)
+    return (th);
+  else if ((th = threshold_get (vl->host, "", NULL,
+         vl->type, NULL)) != NULL)
+    return (th);
+  else if ((th = threshold_get ("", vl->plugin, vl->plugin_instance,
+         vl->type, vl->type_instance)) != NULL)
+    return (th);
+  else if ((th = threshold_get ("", vl->plugin, vl->plugin_instance,
+         vl->type, NULL)) != NULL)
+    return (th);
+  else if ((th = threshold_get ("", vl->plugin, NULL,
+         vl->type, vl->type_instance)) != NULL)
+    return (th);
+  else if ((th = threshold_get ("", vl->plugin, NULL,
+         vl->type, NULL)) != NULL)
+    return (th);
+  else if ((th = threshold_get ("", "", NULL,
+         vl->type, vl->type_instance)) != NULL)
+    return (th);
+  else if ((th = threshold_get ("", "", NULL,
+         vl->type, NULL)) != NULL)
+    return (th);
+
+  return (NULL);
+} /* }}} threshold_t *threshold_search */
+
+int ut_search_threshold (const value_list_t *vl, /* {{{ */
+    threshold_t *ret_threshold)
+{
+  threshold_t *t;
+
+  if (vl == NULL)
+    return (EINVAL);
+
+       /* Is this lock really necessary? */
+       pthread_mutex_lock (&threshold_lock);
+  t = threshold_search (vl);
+  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 */
+
+