`gjJ UdZddlmZddlmZeej jjZda de d<d dZ d dZ d d Z dd Zy)upDetect when the gateway is running stale code after a hot ``git pull``. The gateway is a single long-lived process; its ``sys.modules`` is frozen at boot. If the checkout is updated underneath it (a manual ``git pull``, or the window before ``hermes update``'s graceful restart fires), a first-time lazy import on a new code path can resolve a freshly-pulled consumer module against a stale cached dependency -> ImportError (see ``tests/test_stale_utils_module_import.py`` for the exact failure). We snapshot the checkout revision at gateway startup and compare on demand, so risky callers (e.g. ``/model`` switching) can refuse with a clear "restart the gateway" message instead of crashing on a cryptic import error. If the revision can't be read (non-git install, IO error), the boot snapshot stays ``None`` and skew detection no-ops — it never produces a false positive. ) annotations)PathN str | None_boot_fingerprintcF ddlm}|tS#t$rYywxYw)zCurrent checkout fingerprint, reusing the CLI's git-rev reader. ``hermes_cli.main`` is always already imported in a gateway process (it's the entry point), so this import is free and avoids duplicating the worktree-aware ref resolution. r_read_git_revision_fingerprintN)hermes_cli.mainr _PROJECT_ROOT Exceptionrs D/root/.hermes/venv/lib/python3.12/site-packages/gateway/code_skew.py _fingerprintrs'B-m<< s   c&t tayy)z?Snapshot the checkout revision at gateway startup (idempotent).N)rrr record_boot_fingerprintr)s (N!rcl|jddd}|r|dk7rt|dkDr|ddS|xs|S)z:`` fingerprint as a compact label.: unresolved N)rsplitlen) fingerprintshas r _shortr0sC   S! $R (C sl"s3x"}3Bx  +rcptyt}| |tk(ryttt|fS)zcReturn ``(boot_rev, disk_rev)`` short labels if the checkout drifted since boot, else ``None``.N)rrr)currents r detect_code_skewr 8s9 nG'%66 # $fWo 55r)returnr)r!None)rstrr!r#)r!ztuple[str, str] | None)__doc__ __future__rpathlibr__file__resolveparentr r__annotations__rrrr rrr r+sO"#X&&(//66 $:$ +6r