rrdtool plugin: Sort the list of user defined `RRATimespan's.

This is required by the logic calculating the RRA sized.

diff --git a/src/rrdtool.c b/src/rrdtool.c
index 79331bf..843aa2b 100644 (file)
--- a/src/rrdtool.c
+++ b/src/rrdtool.c
@@ -891,6 +891,19 @@ static int rrd_cache_insert (const char *filename,
        return (0);
 } /* int rrd_cache_insert */
 
+static int rrd_compare_numeric (const void *a_ptr, const void *b_ptr)
+{
+       int a = *((int *) a_ptr);
+       int b = *((int *) b_ptr);
+
+       if (a < b)
+               return (-1);
+       else if (a > b)
+               return (1);
+       else
+               return (0);
+} /* int rrd_compare_numeric */
+
 static int rrd_write (const data_set_t *ds, const value_list_t *vl)
 {
        struct stat  statbuf;
@@ -1029,6 +1042,12 @@ static int rrd_config (const char *key, const char *value)
                        if (rra_timespans_custom[rra_timespans_custom_num] != 0)
                                rra_timespans_custom_num++;
                } /* while (strtok_r) */
+
+               qsort (/* base = */ rra_timespans_custom,
+                               /* nmemb  = */ rra_timespans_custom_num,
+                               /* size   = */ sizeof (rra_timespans_custom[0]),
+                               /* compar = */ rrd_compare_numeric);
+
                free (value_copy);
        }
        else if (strcasecmp ("XFF", key) == 0)