+wait_vpp_service() {
+ # Wait for at most wait_max=$1 seconds until VPP service is ready. Exit
+ # with code 1 if timeout is reached.
+ #
+ # Because VPP systemd unit has Type=simple, systemctl will report the
+ # service to be active has soon as it is forked. This does not mean that
+ # the service is ready, and actually it takes some times before vppctl can
+ # succesfully connect to VPP client socket /run/vpp/cli.sock.
+ local wait_max=$1
+
+ local wait_time=0
+ while ! vppctl show int; do
+ if [[ $wait_time -ge $wait_max ]]; then
+ # Log error to both system log and standard error output
+ logger -s "NFVBENCHVM ERROR: VPP service still not ready after $wait_max seconds." \
+ "Exiting $(basename $0)."
+ exit 1
+ fi
+ sleep 1
+ wait_time=$(( wait_time + 1 ))
+ done
+}
+