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Fix resolver tests: prefetch 40/41

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These two tests were failing basically because in order for prefetching to
happen, the TTL for a given DNS record must be greater than or equal to
the prefetch config value + 9.

The previous TTL for both records was 10, while prefetch value in
configuration was 3, thus making only records with TTL >= 12 elligible
for prefetching.

TTL value for both records was adjusted to the value 13, and prefetch
value was set to 4 (inc by 1), so records with TTL (4 + 9) >= 13 are
elligible for prefetching.

Adjusting prefetch value to 4 gives the test 1 second more to avoid time
problems when sharing resources on a heavy loaded PC.

Also prefetch value in settings is now read by the script and used
by it to corrrectly calculate the amount of time needed to delay before
sending a request to trigger prefetch, adding a bit of flexibility to
fine tune the test in the future.
This commit is contained in:
Diego Fronza
2019-12-02 19:19:56 -03:00
parent dd524cc893
commit a711d6f8c0
4 changed files with 11 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
bin/tests/system/resolver/ns5/named.conf.in
View File

@@ -22,7 +22,7 @@ options {
recursion yes;
dnssec-validation yes;
querylog yes;
prefetch 3 9;
prefetch 4 10;
};
server 10.53.0.7 {

2
bin/tests/system/resolver/ns6/example.net.db.in
View File

@@ -16,6 +16,6 @@ mail IN A 10.53.0.6
fetch 10 IN TXT A short ttl
non-zero 10 IN TXT A short ttl
zero 0 IN TXT A zero ttl
$TTL 10
$TTL 13
ds IN NS ns.ds
ns.ds IN A 10.53.0.6

2
bin/tests/system/resolver/ns6/fetch.tld.db
View File

@@ -18,4 +18,4 @@ $TTL 300
@ NS ns.fetch.tld.
ns.fetch.tld. A 10.53.0.6
@ 10 TXT A short ttl
@ 13 TXT A short ttl

12
bin/tests/system/resolver/tests.sh
View File

@@ -451,10 +451,13 @@ status=`expr $status + $ret`
n=`expr $n + 1`
echo_i "check prefetch (${n})"
ret=0
# read prefetch value from config.
PREFETCH=`sed -n "s/[[:space:]]*prefetch \([0-9]\).*/\1/p" ns5/named.conf`
$DIG $DIGOPTS @10.53.0.5 fetch.tld txt > dig.out.1.${n} || ret=1
ttl1=`awk '/"A" "short" "ttl"/ { print $2 - 3 }' dig.out.1.${n}`
ttl1=`awk '/"A" "short" "ttl"/ { print $2 }' dig.out.1.${n}`
interval=$((ttl1 - PREFETCH + 1))
# sleep so we are in prefetch range
sleep ${ttl1:-0}
sleep ${interval:-0}
# trigger prefetch
$DIG $DIGOPTS @10.53.0.5 fetch.tld txt > dig.out.2.${n} || ret=1
ttl2=`awk '/"A" "short" "ttl"/ { print $2 }' dig.out.2.${n}`
@@ -470,9 +473,10 @@ n=`expr $n + 1`
echo_i "check prefetch of validated DS's RRSIG TTL is updated (${n})"
ret=0
$DIG $DIGOPTS +dnssec @10.53.0.5 ds.example.net ds > dig.out.1.${n} || ret=1
dsttl1=`awk '$4 == "DS" && $7 == "2" { print $2 - 3 }' dig.out.1.${n}`
dsttl1=`awk '$4 == "DS" && $7 == "2" { print $2 }' dig.out.1.${n}`
# sleep so we are in prefetch range
sleep ${dsttl1:-0}
interval=$((dsttl1 - PREFETCH + 1))
sleep ${interval:-0}
# trigger prefetch
$DIG $DIGOPTS @10.53.0.5 ds.example.net ds > dig.out.2.${n} || ret=1
dsttl2=`awk '$4 == "DS" && $7 == "2" { print $2 }' dig.out.2.${n}`