A gateway process opened state.db from ~12 call sites, each minting its
own writer connection, self._lock, close-time WAL checkpoint, and
token-writer thread. With N independent writers on one WAL file, one
connection's close-time checkpoint could race another's growth — the
lost/reordered-page-write signature across 11+ incidents (#90837).
Adds hermes_state_registry.py: a process-wide, per-path, refcounted
shared registry owning the writer boundary.
- acquire(path): same resolved path returns the same instance (one
writer connection, one lock, one token-writer thread) for every
long-lived in-process caller (gateway runner, SessionStore, per-agent
lazy recall, cron per-job, mirror, channel_directory, slash_commands,
shutdown_flush, session_search, react_to_message, delegate, mcp_serve,
auto_archive, tui_gateway).
- close() on a shared instance is a NO-OP — the registry owns the
lifecycle, so one caller's close can never tear down a writer other
callers still hold.
- Generation-aware retirement on inode change: a replaced state.db
RETIRES the live generation (never lent again) but keeps it alive for
existing holders; release is object-keyed so holders of the old
generation drain it independently of the new one. The old
generation's own write path still fails with the typed
StateDbReplacedError (existing protection, unchanged).
- Replacement-open failure leaves NO registry entry for the path —
the next acquire retries fresh, never hands out a closed stale object.
- All teardown runs OUTSIDE the registry lock: a final release's WAL
checkpoint can never stall acquisition for every state.db.
- close_shared_session_dbs() at gateway shutdown drains every
generation (live + retired) as the final safety net.
CLI one-shots, recovery flows, and read-only cross-profile opens keep
using SessionDB() directly with their own close() — only long-lived
in-process sites route through the registry.
References #90837 (root-cause tracker stays open: the #10 EOF signature
and the WAL-lifecycle A/B verdict remain under investigation there).
Per-job cron inference pins are now user-owned: the agent-facing cronjob
tool schema no longer exposes model/provider/base_url, and the registered
handler ignores them even if a model hallucinates the old parameters.
Users set pins via the dashboard, hermes cron create/edit --model/--provider,
or jobs.json directly — and once set, a pin sticks until the user changes it.
Existing agent-era pins are grandfathered untouched.
New cron.model / cron.model_provider config keys give the cron fleet its
own default model, independent of the chat model. Fire-time resolution:
per-job pin > cron.model > HERMES_MODEL > model.default. An axis covered
by the explicit cron-fleet default is deliberate routing, not drift, so
the #44585 fail-closed guard skips it — switching your chat model with
/model or hermes model no longer breaks unpinned cron fleets.
- tools/cronjob_tools.py: drop model param from agent schema + handler;
remove now-dead _resolve_model_override
- cron/scheduler.py: cron.model/model_provider resolution + per-axis
drift-guard skip
- cron/jobs.py: snapshot resolution mirrors the new precedence
- hermes_cli/subcommands/cron.py + hermes_cli/cron.py: --model/--provider
on hermes cron create/edit
- hermes_cli/config.py: cron.model / cron.model_provider defaults
- docs: cron.md model-resolution tip rewritten
When an operator changes the global model/provider config, warn that
unpinned cron jobs with stored snapshots will fail-closed on their next
run. Adds a cron.model_drift_guard config opt-out (default true) for
fleets that should deliberately track changing global defaults.
Addresses #59031. Original PR #59177 by @doncazper.
Two follow-ups to the per-job model pin surface (#67472 / #49948 review):
- cron/scheduler.py: pass target_model=<effective job model> to
resolve_runtime_provider() on the primary path, so providers with
model-specific api_mode routing derive the mode from the model the job
actually runs (per-job pin > env > config default) instead of the stale
persisted default. The auth-fallback path already did this for its
fb_model.
- hermes_cli/web_server.py: POST /api/cron/jobs (and its sync worker) no
longer hardcodes profile="default" when the request carries no profile
param. A pool backend scoped to a named profile now resolves its own
profile via get_active_profile_name(), so pre-profileScoped desktop
clients can't write a named profile's job into ~/.hermes. Unscoped /
custom HERMES_HOME keeps the legacy default fallback.
Tests: target_model capture test on run_job; two profile-default tests on
the create endpoint.
Two live cron bugs, both surfaced by @banditburai in #35616 (whose larger
watchdog/supervisor work is already superseded by the CronScheduler provider
refactor on main):
- #32896: `cron list` crashed on a present-but-null `deliver` field —
`job.get("deliver", ["local"])` returns None for an explicit null, which
then hit `", ".join(None)`. Coalesce with `or ["local"]` (same pitfall
the sibling `repeat` line already guards against).
- #33465: cron jobs 401'd on Bitwarden/BSM-backed secrets. The per-run env
reload used a bare `load_dotenv(override=True)`, which re-applied only the
.env placeholder — startup had already recorded this HERMES_HOME in
env_loader._APPLIED_HOMES, so the external-secret re-pull no-oped. Route the
reload through load_hermes_dotenv() and call reset_secret_source_cache()
first to force the re-pull (Bitwarden's 300s value-cache keeps it off the
network; override honours secrets.bitwarden.override_existing, mirroring
startup).
Tests: null-deliver regression guard in test_cron.py; reset-before-reload
ordering guard in test_scheduler.py. Migrated 31 scheduler-reload test seams
from patching dotenv.load_dotenv to the new load_hermes_dotenv /
reset_secret_source_cache seam.
An unpinned cron job follows the global default provider (config.yaml
model.default + resolve_runtime_provider). If that global state is changed
after the job is created — e.g. a temporary switch to a paid provider like
nous/claude-fable-5 — the job silently inherits it on its next tick and spends
real money. This is the reported $7.73 incident: a job created under a
free/default provider later inherited a temporary paid switch.
Fix (ask #1 only) preserves the legitimate "unpinned job should follow
model.default" use case by detecting *drift* rather than freezing the model:
- create_job (cron/jobs.py): for UNPINNED, agent-backed jobs (no explicit
provider, not no_agent), snapshot the provider that resolution WOULD pick
right now into a new optional `provider_snapshot` field, resolved via the
same resolve_runtime_provider() path the ticker uses. Fail-open to None on
any resolution error so job creation never breaks.
- run_job (cron/scheduler.py): right after runtime resolution, if the job has
a provider_snapshot AND is unpinned AND the currently-resolved provider
DIFFERS from the snapshot, fail closed for that run — make no paid call and
deliver a loud, actionable alert naming both providers and telling the user
to pin explicitly (`cronjob action=update job_id=.. provider=..`).
Back-compat: jobs with no snapshot (pre-existing jobs, no_agent jobs, or any
job whose creation-time resolution failed) behave exactly as before — the
guard only engages when a snapshot exists. Explicitly-pinned jobs (job.provider
set) are unaffected since they don't drift with global state.
Tests: tests/cron/test_cron_provider_pin.py covers snapshot-matches (runs),
snapshot-differs (fail closed, no agent constructed), no-snapshot back-compat,
None-snapshot back-compat, explicitly-pinned (runs regardless), plus create_job
snapshot capture/skip/fail-open. The fail-closed case is load-bearing (fails
without the guard).
Issue #44585 asks #2-4 (hard-stop a running job, gateway-stop containment,
fail-closed on provider mutation) are out of scope for this change.
kshitijk4poor