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fix: fix Failed to create window instance.

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Wait for Xvfb to be fully ready before starting.
This commit is contained in:
kuwacom 2026-03-15 16:36:38 +09:00
parent 5f4b038d54
commit ccbc666321
1 changed files with 77 additions and 1 deletions
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78
docker/dedicated-server/entrypoint.sh
View file

@ -30,6 +30,65 @@ ensure_persist_file() {
ln -sfn "${persist_path}" "${runtime_path}"
}
wait_for_xvfb_ready() {
local display="$1"
local xvfb_pid="$2"
local wait_seconds="${XVFB_WAIT_SECONDS:-10}"
local wait_ticks=$((wait_seconds * 10))
local display_number="${display#:}"
display_number="${display_number%%.*}"
if [ -z "${display_number}" ] || ! [[ "${display_number}" =~ ^[0-9]+$ ]]; then
echo "[error] Invalid DISPLAY format for Xvfb wait: ${display}" >&2
return 1
fi
local socket_path="/tmp/.X11-unix/X${display_number}"
local elapsed=0
while [ "${elapsed}" -lt "${wait_ticks}" ]; do
if ! kill -0 "${xvfb_pid}" 2>/dev/null; then
echo "[error] Xvfb exited before the display became ready." >&2
if [ -f /tmp/xvfb.log ]; then
echo "[error] ---- /tmp/xvfb.log ----" >&2
tail -n 200 /tmp/xvfb.log >&2 || true
echo "[error] ----------------------" >&2
fi
return 1
fi
if [ -S "${socket_path}" ]; then
# Keep a short extra delay so Wine does not race display handshake.
sleep 0.2
if kill -0 "${xvfb_pid}" 2>/dev/null && [ -S "${socket_path}" ]; then
return 0
fi
fi
# One more liveness check after the ready probe branch.
if ! kill -0 "${xvfb_pid}" 2>/dev/null; then
echo "[error] Xvfb exited during display readiness probe." >&2
if [ -f /tmp/xvfb.log ]; then
echo "[error] ---- /tmp/xvfb.log ----" >&2
tail -n 200 /tmp/xvfb.log >&2 || true
echo "[error] ----------------------" >&2
fi
return 1
fi
sleep 0.1
elapsed=$((elapsed + 1))
done
echo "[error] Timed out waiting for Xvfb display ${display}." >&2
if [ -f /tmp/xvfb.log ]; then
echo "[error] ---- /tmp/xvfb.log ----" >&2
tail -n 200 /tmp/xvfb.log >&2 || true
echo "[error] ----------------------" >&2
fi
return 1
}
if [ ! -d "$SERVER_DIR" ]; then
echo "[error] Server directory not found: $SERVER_DIR" >&2
exit 1
@ -78,8 +137,25 @@ fi
if [ -z "${DISPLAY:-}" ]; then
export DISPLAY="${XVFB_DISPLAY:-:99}"
XVFB_SCREEN="${XVFB_SCREEN:-64x64x16}"
DISPLAY_NUMBER="${DISPLAY#:}"
DISPLAY_NUMBER="${DISPLAY_NUMBER%%.*}"
if [ -z "${DISPLAY_NUMBER}" ] || ! [[ "${DISPLAY_NUMBER}" =~ ^[0-9]+$ ]]; then
echo "[error] Invalid XVFB_DISPLAY format: ${DISPLAY}" >&2
exit 1
fi
XVFB_SOCKET="/tmp/.X11-unix/X${DISPLAY_NUMBER}"
XVFB_LOCK="/tmp/.X${DISPLAY_NUMBER}-lock"
# The check is performed assuming the same container will be restarted.
if [ -S "${XVFB_SOCKET}" ] || [ -e "${XVFB_LOCK}" ]; then
echo "[warn] Removing stale Xvfb state for ${DISPLAY} before startup." >&2
rm -f "${XVFB_SOCKET}" "${XVFB_LOCK}"
fi
Xvfb "${DISPLAY}" -nolisten tcp -screen 0 "${XVFB_SCREEN}" >/tmp/xvfb.log 2>&1 &
sleep 0.2
XVFB_PID=$!
wait_for_xvfb_ready "${DISPLAY}" "${XVFB_PID}"
echo "[info] Xvfb ready on ${DISPLAY} (pid=${XVFB_PID}, screen=${XVFB_SCREEN})"
else
echo "[info] Using existing DISPLAY=${DISPLAY}; skipping Xvfb startup"
fi
args=(