for RRAs with a step count of 1, treat MIN/MAX/LAST and AVERAGE as equal, so there...

[rrdtool.git] / src / rrd_fetch.c

diff --git a/src/rrd_fetch.c b/src/rrd_fetch.c
index bbb5314..47b4166 100644 (file)
--- a/src/rrd_fetch.c
+++ b/src/rrd_fetch.c
@@ -270,7 +270,34 @@ int rrd_fetch_fn(
 
     /* find the rra which best matches the requirements */
     for (i = 0; (unsigned) i < rrd.stat_head->rra_cnt; i++) {
-        if (cf_conv(rrd.rra_def[i].cf_nam) == cf_idx) {
+      enum cf_en rratype=cf_conv(rrd.rra_def[i].cf_nam);
+      /* handle this RRA */
+      if (
+         /* if we found a direct match */
+         (rratype == cf_idx)
+         || 
+         /*if we found a DS with interval 1 
+           and CF (requested,available) are MIN,MAX,AVERAGE,LAST
+         */
+         ( 
+             /* only if we are on interval 1 */
+             (rrd.rra_def[i].pdp_cnt==1) 
+             && ( 
+                 /* and requested CF is MIN,MAX,AVERAGE,LAST */
+                 (cf_idx == CF_MINIMUM)
+                 ||(cf_idx == CF_MAXIMUM)
+                 ||(cf_idx == CF_AVERAGE)
+                 ||(cf_idx == CF_LAST)
+                 )
+             && (
+                 /* and found CF is MIN,MAX,AVERAGE,LAST */
+                 (rratype == CF_MINIMUM)
+                 ||(rratype == CF_MAXIMUM)
+                 ||(rratype == CF_AVERAGE)
+                 ||(rratype == CF_LAST)
+                 )
+             )
+         ){
 
             cal_end = (rrd.live_head->last_up - (rrd.live_head->last_up
                                                  % (rrd.rra_def[i].pdp_cnt