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statistics: check cache flushing

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This commit is contained in:
Jeff Kaufman
2013-04-11 13:44:07 -04:00
parent 335282f334
commit 43b4b0768b
1 changed files with 32 additions and 3 deletions
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test/nginx_system_test.sh
+32 -3
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@@ -847,9 +847,21 @@ fetch_until $URL "grep -c $COLOR0" 1 $CACHE_C
# All three caches are now populated.
# TODO(jefftk): Check statistics here. In apache_system_test.sh we can track
# reported flushed by looking at statistics, but this isn't ported to nginx
# yet. Once that is ported, come back here and make sure it's correct.
# Track how many flushes were noticed by pagespeed processes up till this point
# in time. Note that each process/vhost separately detects the 'flush'.
# A helper function just used here to look up the cache flush count for each
# cache.
function cache_flush_count_scraper {
CACHE_LETTER=$1 # a, b, or c
URL="$SECONDARY_HOSTNAME/ngx_pagespeed_statistics"
HOST="--header=Host:cache_${CACHE_LETTER}.example.com"
$WGET_DUMP $HOST $URL | egrep "^cache_flush_count:? " | awk '{print $2}'
}
NUM_INITIAL_FLUSHES_A=$(cache_flush_count_scraper a)
NUM_INITIAL_FLUSHES_B=$(cache_flush_count_scraper b)
NUM_INITIAL_FLUSHES_C=$(cache_flush_count_scraper c)
# Now change the file to $COLOR1.
echo ".class myclass { color: $COLOR1; }" > "$CSS_FILE"
@@ -881,6 +893,15 @@ sleep 1
# Check that CACHE_A flushed properly.
fetch_until $URL "grep -c $COLOR1" 1 $CACHE_A
# Cache was just flushed, so it should see see exactly one flush and the other
# two should see none.
NUM_MEDIAL_FLUSHES_A=$(cache_flush_count_scraper a)
NUM_MEDIAL_FLUSHES_B=$(cache_flush_count_scraper b)
NUM_MEDIAL_FLUSHES_C=$(cache_flush_count_scraper c)
check [ $(($NUM_MEDIAL_FLUSHES_A - $NUM_INITIAL_FLUSHES_A)) -eq 1 ]
check [ $NUM_MEDIAL_FLUSHES_B -eq $NUM_INITIAL_FLUSHES_B ]
check [ $NUM_MEDIAL_FLUSHES_C -eq $NUM_INITIAL_FLUSHES_C ]
start_test Flushing one cache does not flush all caches.
# Check that CACHE_B and CACHE_C are still serving a stale version.
@@ -901,6 +922,14 @@ sleep 1
fetch_until $URL "grep -c $COLOR1" 1 $CACHE_B
fetch_until $URL "grep -c $COLOR1" 1 $CACHE_C
# Now cache A should see no flush while caches B and C should each see a flush.
NUM_FINAL_FLUSHES_A=$(cache_flush_count_scraper a)
NUM_FINAL_FLUSHES_B=$(cache_flush_count_scraper b)
NUM_FINAL_FLUSHES_C=$(cache_flush_count_scraper c)
check [ $NUM_FINAL_FLUSHES_A -eq $NUM_MEDIAL_FLUSHES_A ]
check [ $(($NUM_FINAL_FLUSHES_B - $NUM_MEDIAL_FLUSHES_B)) -eq 1 ]
check [ $(($NUM_FINAL_FLUSHES_C - $NUM_MEDIAL_FLUSHES_C)) -eq 1 ]
# Clean up update.css from mod_pagespeed_test so it doesn't leave behind
# a stray file not under source control.
rm -f $CSS_FILE