From: Michael Salmon <michael.salmon@ericsson.com>
Date: Thu, 16 Jul 2015 07:05:54 +0000 (+0200)
Subject: threshold plugin: Register callbacks only once.
X-Git-Tag: collectd-5.5.1~31^2~9
X-Git-Url: https://git.verplant.org/?a=commitdiff_plain;h=74fa9577b1acbb965488aa0a48c140d8ece437bf;p=collectd.git

threshold plugin: Register callbacks only once.

Fixes: #551
Signed-off-by: Florian Forster <octo@collectd.org>
---

diff --git a/src/threshold.c b/src/threshold.c
index 391ee932..a70ec8af 100644
--- a/src/threshold.c
+++ b/src/threshold.c
@@ -962,6 +962,7 @@ int ut_config (oconfig_item_t *ci)
 { /* {{{ */
   int i;
   int status = 0;
+  int old_size = c_avl_size (threshold_tree);
 
   threshold_t th;
 
@@ -1005,7 +1006,9 @@ int ut_config (oconfig_item_t *ci)
       break;
   }
 
-  if (c_avl_size (threshold_tree) > 0) {
+  /* register callbacks if this is the first time we see a valid config */
+  if ((old_size == 0) && (c_avl_size (threshold_tree) > 0))
+  {
     plugin_register_missing ("threshold", ut_missing,
         /* user data = */ NULL);
     plugin_register_write ("threshold", ut_check_threshold,