Each linked overlay gets a checkbox on the blueprint detail page that opts
its server.cfg in as exec server_overlay_<id>. The web app builds the
spec with {path, alias} per overlay and prepends exec server_overlay_<id>
lines to the blueprint config in lowest-overlay-first order. The host
stages those copies in the overlayfs upper layer before mounting (avoids
copy-up writes against a sandbox-uid file). A live preview block above the
Config textarea shows what gets auto-executed.
Schema:
- alembic 0007: BlueprintOverlay.expose_server_cfg BOOLEAN
Spec contract:
- l4d2host OverlayRef(path, alias?). load_spec accepts both bare-string
and {path, alias} entries.
Side effects folded in (same file in l4d2_facade):
- start_server auto-initializes; the manual Initialize step is no longer
needed before Start.
- initialize_server no longer runs blueprint builders — builds happen on
overlay save, not on every server Start.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Reset stops the systemd service, unmounts the overlay, and rm -rf's both
runtime/<name> and instances/<name>, but keeps the Server row, blueprint,
and (shared) systemd template. Next Start re-initializes from the current
blueprint, so users can clean up logs/caches/accumulated game state without
losing the server.
Implementation factors a shared _purge_instance helper out of
delete_instance; reset_instance reuses it without the existence guard. New
"reset" lifecycle op flows through the same route + worker + facade plumbing
as the other server ops.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Replace direct fuse-overlayfs / fusermount3 subprocess calls in
start_instance / stop_instance / delete_instance with the existing
OverlayMounter abstraction, now backed by KernelOverlayFSMounter.
Adds an os.path.ismount guard at the top of start_instance so a
kernel-level overlay that survived a web-worker crash isn't double-
mounted (kernel mounts persist when the cgroup dies, unlike fuse
daemons).
Delete the unused FuseOverlayFSMounter module.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
systemctl stop is already a no-op on a stopped unit, but stop_instance
was unconditionally running fusermount3 -u and bubbling up the EINVAL
when the overlay wasn't currently mounted (e.g. server already stopped).
Mirror the established delete_instance pattern: always attempt the
unmount, swallow CalledProcessError, and label the step "(if mounted)".
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
- validate instance names at the host lib and web boundary against
[a-z0-9][a-z0-9_-]{0,63} to prevent path traversal via Server.name
- fail-closed on SECRET_KEY: load_config returns None when env unset,
create_app raises if missing or "dev" outside TESTING
- close login timing oracle by hashing a dummy digest when the user
is not found, equalizing response time
- set SESSION_COOKIE_SECURE outside TESTING
- delete_instance tolerates stop_service and fusermount3 failures so
partially-initialized instances clean up without contract breaks;
drops the is_mount() preflight that violated AGENTS.md
- document claim_next_job's single-process assumption
- clarify emit_step contract via docstring
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
