Merge pull request #603 from geoadmin/fix_readiness_probe

improve readiness probe

scripts/checker.sh

@@ -3,8 +3,30 @@ set -e
 set -u
 set -o pipefail
 
-if searchd --status 1> /dev/null; then
-    exit 0
-else
+# the service is considered to be ready for connections if
+    # searchd --status is running
+    # last sync of index files exists and is not older than 5 minutes
+
+# check if searchd is running
+searchd --status 1> /dev/null || exit 1
+
+# check if index files are up-to-date
+LAST_SYNC="/tmp/last_sync_finished.txt"
+MAX_AGE=300 # max age in seconds should be the same interval as the cron settings
+
+# check if index sync status file exists
+if [[ ! -f "${LAST_SYNC}" ]]; then
+    echo "index sync status file does not exist ${LAST_SYNC}"
+    exit 1
+fi
+
+# Calculate the time  MAX_AGE seconds ago in seconds
+five_mins_ago=$(( $(date +%s) - MAX_AGE ))
+# Get the file's last modification time in seconds
+file_mtime=$(stat -c %Y "${LAST_SYNC}")
+
+# check if index sync status file is up-to-date
+if [[ $file_mtime -lt $five_mins_ago ]]; then
+    echo "index sync status file is outdated: ${LAST_SYNC}"
     exit 1
-fi
+fi