Tracking IDs are review bookkeeping that rots in shipped source; the rationale they tagged is kept. Comment-only change (CommentChecker 458 -> 16 false positives).
The subtag fallback's coverage was fixed at SubscribeAlarms time and never
re-examined. AlarmWatchListResolver deliberately swallows a Galaxy Repository
outage and returns whatever configuration contributed, so a discovery failure at
startup left the monitor subscribed with an empty watch-list for the rest of its
life. In Auto mode the alarmmgr primary keeps working, so nothing looks wrong
until the failover that needs the standby finds it covering zero alarms — with a
single LogWarning emitted possibly weeks earlier as the only evidence.
ResolveAsync now returns an AlarmWatchListResolution (targets + whether discovery
was attempted and whether it failed, with the failure message), which is what the
caller needed to tell "discovery produced nothing" from "nothing was configured".
GatewayAlarmMonitor grades that resolution against the effective mode and folds
the verdict into AlarmProviderStatus, so it reaches the feed, the dashboard badge
and every late-joining subscriber:
- zero targets while the mode can need them (Auto/ForceSubtag) -> degraded with
SubtagWatchListEmpty; discovery enabled but failing adds SubtagDiscoveryFailed
and the message. ForceAlarmManager builds no subtag consumer and is not graded.
- degraded is now the OR of "subtag is serving" and "the watch-list covers
nothing", so the Auto case where alarmmgr is healthy and the standby is empty
is visible. DashboardAlarmProviderStatus renders that combination as the amber
"Alarm Manager (no subtag standby)" badge rather than the failover label, which
would have named the wrong live provider.
- on the failover edge (ApplyProviderModeChangeAsync, toMode == Subtag) the
monitor re-resolves BEFORE publishing the status and reports any difference as
SubtagWatchListStale with both counts.
The re-resolution is deliberately NOT re-sent. The worker rejects a second
SubscribeAlarms while subscribed (AlarmCommandHandler.Subscribe), and the only
expressible replacement — UnsubscribeAlarms then SubscribeAlarms — rebuilds
FailoverAlarmConsumer, which restarts on the primary that just failed and
discards the warm standby state, so it would flap the feed rather than repair it.
The finding's other alternative (treat empty coverage as a lifecycle failure) was
rejected too: it would crash-loop the monitor every 5 s on a persistent GR outage
and take the working alarmmgr feed down with it. A monitor restart re-resolves and
re-sends, and the status now says so.
Docs: docs/AlarmClientDiscovery.md gains the grading rules and corrects two stale
claims (the resolver method name, and "re-runs discovery on its reconcile cadence
and pushes an updated watch-list", which never happened); gateway.md gains the
standby-coverage visibility paragraph; docs/GatewayConfiguration.md records the
consequence on the UseGalaxyRepository and Mode rows.
Tests: SubtagCoverage_WhenDiscoveryFailsAtSubscribe_ProviderStatusIsDegradedWith-
Reason and SubtagCoverage_WhenDiscoveryRecoversByFailover_ReResolvesAndReportsDrift
drive the fake-worker monitor; two resolver cases pin the new provenance fields.
The pre-existing dashboard case for degraded+ALARMMGR now asserts the new label.
Committed together because the two changes share the same doc paragraphs (the ACL
section of GatewayDashboardDesign.md, the GroupToTag / AllowAnonymousLocalhost rows
of GatewayConfiguration.md, and CLAUDE.md's authentication paragraph), and splitting
them would leave one of the two describing behaviour that does not yet exist.
SEC-41 — tag grants no longer trusted from login-stamped claims
---------------------------------------------------------------
DashboardSessionAcl read the zb:dashboardtag claims stamped into the cookie at
login. GatewayOptions binds once at startup, so applying a GroupToTag edit needs a
restart — but the restart does not clear the auth cookie (data-protection keys
persist), so a browser returning afterwards re-authenticated with tag claims
resolved under the OLD map. A revoked grant therefore survived on the cookie seam
for the sliding 8-hour idle life, renewable indefinitely by activity, while the
hub-token seam had no such gap because its mint re-resolves.
CanViewSession now re-resolves the grant on every subscribe from the caller's
mxgateway:ldap_group claims through DashboardGroupTagMapping.MapGroupsToTags
against the currently bound map — the same one call HubTokenService.Issue makes.
Fallback (documented on the class and in the design doc): a principal carrying NO
group claims falls back to its stamped tag claims. That arm exists for the
hub-token principal — HubTokenService.Validate rehydrates roles and tags but not
groups, so re-resolution already happened at mint, one lifetime ago at worst. It
cannot re-open the cookie hole: DashboardAuthenticator stamps group and tag claims
from one group list, so a cookie principal holding a tag claim always holds the
groups it came from, and a login yielding no groups yields no tags. A principal
with neither kind of claim stays an empty-grant Viewer.
SEC-40 — the alarm feed requires a real authenticated dashboard role
--------------------------------------------------------------------
AlarmsHub sat behind HubClientsPolicy, which the read-only environment bypasses
satisfy, so an anonymous-localhost caller or a Mode=Disabled deployment received
galaxy-wide alarm metadata — alarm reference (a full tag path), state, severity,
category, area, acknowledging operator — for the whole subscription expression.
Decided: tighten the gate, keep the scope. New AuthenticatedDashboardRoleRequirement
+ its handler, and a MxGateway.Dashboard.Alarms policy built from it. Because
DashboardAuthorizationHandler is typed to DashboardAuthorizationRequirement, it is
never invoked for the new type, so neither Authentication:Mode=Disabled nor
anonymous localhost can satisfy the policy — the same structural device the mounted
Secrets UI already relies on. The policy keeps both schemes so external hub clients
can still authenticate with a bearer token, and DisableLogin auto-login is
unaffected (it mints a genuinely authenticated both-roles principal).
The /alarms page carries the same policy, not just the hub: it reads the same
central monitor in process, so gating only the hub would have left the disclosure
one navigation away. The side rail hides the Alarms link for callers the policy
denies, matching the Secrets link precedent. AlarmsHubPublisher is unchanged and
stays unfiltered by design — audience is decided at hub admission, and the monitor
carries no per-session provenance to narrow by.
Alarm metadata deliberately remains galaxy-wide for authenticated Viewers: an
AlarmFeedMessage has no session id or owning key for the SEC-25 tag intersection to
work against, and equating a visibility tag with an alarm-reference prefix would
turn GroupToTag into the data-access constraint it explicitly is not.
Tests
-----
DashboardSessionAclTests: the SEC-41 regression — a cookie-style principal whose
stale tag claim is no longer granted by any of its groups under the current map is
denied; plus the allowing direction (including with no stamped tag at all, which
proves the decision comes from the groups), the ignore-case corner, group claims
that map to nothing, and the hub-token fallback asserted against an EMPTY map so
dropping the fallback would fail loudly.
AlarmFeedAuthorizationTests (new): both handlers run together in the most permissive
environment (Mode=Disabled + loopback + AllowAnonymousLocalhost) do not satisfy the
alarm requirement, with the bypassable requirement as the control so the negative
cannot pass because the bypass was misconfigured; authenticated Viewer/Admin do
satisfy it; an unauthenticated role claim does not; the registered policy carries
the non-bypassable requirement and both schemes; and both readers — the hub type's
[Authorize] and the /alarms endpoint metadata — carry it.
SecretsNavRenderTests: registers the new policy (an unregistered policy name throws
rather than denying in an AuthorizeView) and gains the Alarms-link negative/control
pair.
Verified: dotnet build src/ZB.MOM.WW.MxGateway.NonWindows.slnx (zero warnings);
filtered run of the touched classes — 92 passed, 0 failed.
Targeted re-read of the 203-file fca978d sweep (docs(src): add missing
XML docs and strip tracking-ID comments): a mechanical pre-pass narrowed
1,383 deletions to 68 files / 816 residual prose lines, and a judged
review of every one found 17 collateral deletions across 10 files —
rationale prose deleted alongside resolved markers with no equivalent
surviving anywhere in the tree. Restored (markers stay stripped, per the
sweep's intent):
- SessionManager: the three metrics-accounting invariants (kill-path
gauge decrement safety, shutdown kill-fallback registry guard vs
double bookkeeping, SessionClosed-not-SessionRemoved on failed close)
- SessionManagerTests: the matching accounting expectation note and the
reason-string propagation pins (test summary + FakeWorkerClient.LastKillReason)
- MxAccessGatewayService.AcknowledgeAlarm: the routing remarks (GUID vs
Provider!Group.Tag vs InvalidRequest; session-less via IGatewayAlarmService)
— inheritdoc resolves to nothing (proto-generated base is undocumented)
- HubTokenService.Validate: why the hollow-token guard exists
(non-empty AuthenticationType alone satisfies IsAuthenticated)
- DashboardSessionAdminService: why both broad catches exist (keep raw
teardown exceptions out of Blazor's error boundary), Close + Kill paths
- WorkerPipeSession.RunAsync: why the factory result throws instead of
NREing (unambiguous failure; finally-block Dispose can't no-op)
- LmxSubtagAlarmSource: Advise idempotency; Write is always unsecured
(user id 0), never WriteSecured semantics
- WnWrapAlarmConsumer: the v1-prefix path is what WIN-911-style code uses
- DashboardSnapshotPublisherTests: what the 10ms slack absorbs
(Task.Delay's coarse Windows timer quantum)
- DashboardBrowseAndAlarmModelTests: why the label text is pinned, not
just the CSS class
Everything else flagged verified benign: inheritdoc replacements resolve
to equal-or-richer interface docs, or the substance survives relocated.
NonWindows slnx 0W/0E; touched gateway test classes 65/65.
The consequence that full-DN keys can never match (the shared LDAP
provider pre-strips groups to short RDN names) was documented only in
MapGroupsToTags's lookup comment; the class-level <summary> now states
it and points there, mirroring DashboardGroupRoleMapping.
Follow-up to the Server-040 comment restoration (d3ac527). The restored
comment in DashboardGroupRoleMapping records that the shared
ZB.MOM.WW.Auth.Ldap provider hands the mapper groups already stripped to
short RDN names, so a full-DN GroupToRole *key* can never match. Three
doc sites still told operators the opposite, and the tag mapper carried
the same consequence with no comment at all.
- docs/GatewayConfiguration.md: GroupToRole and GroupToTag rows both said
keys may be 'short CN or full DN — leading-RDN match'. Corrected to
short group names only, with the reason (pre-stripped groups) and a
note that the mapper's full-string-then-RDN fallback only matters to
non-library callers of the IGroupRoleMapper<string> seam.
- docs/GatewayDashboardDesign.md: the login-flow bullet said the user's
memberOf '(or short CN)' is matched against GroupToRole; it now
describes what actually happens — groups arrive short and are matched
against short-name keys.
- DashboardGroupTagMapping: short comment at the lookup pointing at the
DashboardGroupRoleMapping comment, since it reuses ExtractFirstRdnValue
and inherits the same full-DN-key-unsupported consequence.
Both doc rows are pre-existing on main — they predate this branch and
were not introduced by the Server-040 work; only their incorrectness was
surfaced by it. Comment/doc-only; no logic changes.
The In-process page feeds table still described the alarms page's subscription as
provider status only, contradicting the three passages updated in 7b6dfba.
The loop's catch-all comment (and the cadence bullet that repeated it) claimed the
monitor completes a subscriber's stream on restart. It does not: ClearCache pushes
snapshot_status(false) through the still-open channel, and a subscriber is only
completed-with-error on a failed TryWrite, or removed by its own disposal.
The SnapshotStatus arm's priming claim had no test behind it — every push test
attached to an untruncated feed and pushed the edge itself. ScriptedAlarmFeed now
replays an optional open sequence, and a new test attaches to a feed already
primed provider_status then snapshot_status(truncated) and asserts the banner
comes up with no edge pushed after render.
Audited every Server-0xx finding whose Resolution described a
documentation-only or comment-only change, and spot-checked the doc
sub-claims of otherwise test-backed resolutions. 20 entries annotated
in place (append-only; no historical resolution text rewritten).
Two corrections had not survived and are re-applied:
Server-040: the MapGroupsToRoles lookup-precedence comment moved intact
into DashboardGroupRoleMapping (792e3f9) and was then deleted wholesale
by fca978d, a sweep meant only to strip (Server-NNN) tracking markers.
That also removed a later, substantive paragraph recording that the
shared ZB.MOM.WW.Auth.Ldap provider pre-strips groups to short RDN
names, so a full-DN GroupToRole key is unsupported. Both paragraphs
restored, minus the tracking IDs.
Server-009: the WAL / busy_timeout note vanished when the Storage
section of docs/Authentication.md was rewritten to delegate
connection-factory detail to ZB.MOM.WW.Auth.ApiKeys. The behavior is
still live in the library (confirmed against 0.2.1), so the fix is
prose-only.
Server-011/014/022/023 are annotated as moot rather than regressed:
the IAlarmRpcDispatcher trio was deleted in dc9c0c9 and no stale
'not yet wired' / 'PR A.6/A.7' prose survives in Server source.
Server-038's documented v1 ACL gap was later closed by
IDashboardSessionAcl, so its remarks are current.
Comment/doc-only; no logic changes.
The truncated-snapshot caveat moved from poll-only to push-driven. The page
already held an in-process alarm-feed subscription for the provider badge; it
now also handles the feed's snapshot_status frame, so a capped provider fetch is
caveated when the monitor decides it rather than up to three seconds later.
The poll's assignment stays as the reconcile baseline — both sources read the
same monitor verdict, and the frame is consumed, never synthesized page-side.
StreamAsync primes every subscriber with a snapshot_status frame at open, so a
page attaching mid-truncation needs no priming logic of its own; the loop is
renamed StatusFeedLoopAsync because it now feeds two indicators, not one.
The form split tags with the shared ParseList and attached the result verbatim,
so "team-a, TEAM-A" persisted as two entries and the constraints column read
dashboard_tags=[team-a, TEAM-A] — one grant reported as two on the page whose
job is to show what a key was granted. Enforcement never saw it (a session holds
its tags in a case-insensitive set), which is exactly why the display was the
only place it could surface.
De-duplicates ordinal-ignore-case at the attach point only, first spelling
winning, matching ApiKeyAdminCommandLineParser.ParseDashboardTags. ParseList is
untouched: the five glob lists are matched literally, so near-duplicates there
are not necessarily the same rule and must survive verbatim — pinned by a test.
The help text claimed to mirror the CLI flag; it now claims only the shared
separators and the dedupe, since the form still drops an empty segment silently
where the CLI hard-fails. A browser form has no exit code to fail with, so that
difference stays, and Authorization.md now records it.
The constraints column enumerated only the eight positional ApiKeyConstraints
members, so a key whose sole recorded policy was a dashboard tag summarised to
an empty string and rendered as "-" — the same cell a key with no policy at
all gets. ApiKeyConstraints.IsEmpty counts DashboardTags, so that key is not
unconstrained, and the column was quietly telling operators otherwise about a
grant that decides who can watch a session's events.
The create form had no dashboard-tags input either, so tagged keys could only
be minted from the apikey create-key CLI. Adds the field beside the other
constraint lists (same ParseList separators) and attaches it through the
record's init-only member, since it postdates the eight-member constructor.
CreateModel, OpenCreateDialog and TryBuildCreateRequest widen to internal for
the new render tests: the create form is behind a click and static rendering
cannot dispatch one. That is the assembly's existing InternalsVisibleTo seam.
Follow-up to the per-session event ACL. Part of that change rode into 693a78d
via a concurrent agent's pathspec-less commit; this commit carries the review
fixes and uses pathspecs on the commit itself so it cannot recur in either
direction.
Gating the page's subscribe seam made AttachEvents asynchronous — it awaits the
authentication state — and that await is a suspension point the synchronous
version did not have. On a rapid A -> B navigation the suspended A continuation
resumes after B's parameter set has run to completion, re-reads the live
SessionId (now B's), and attaches B a SECOND time. The ACL is not bypassed —
the newer attach already cleared that same session — but the fields holding B's
first subscription are overwritten in place, so nothing ever disposes it: its
EventsHubViewerRegistry entry is never released, which keeps the mirror cloning
events for a session the page is no longer watching through that handle, and
its pump is never cancelled. A resource leak the ACL work introduced.
OnParametersSetAsync now claims a monotonic _attachGeneration synchronously,
before its first await, and AttachEventsAsync re-checks it after the await and
before any field write or Subscribe call. A stale attach returns rather than
detaching: it owns nothing, and tearing down there would destroy the newer
attach's subscription. DetachEventsAsync needs no such guard — it captures and
nulls the live fields synchronously before it awaits, so a resumed detach only
unwinds what it already took ownership of. Same dispatcher-owned identity idea
as the existing ReferenceEquals guards in PumpEventsAsync and
MarkDisconnectedAsync, one level up.
The interleaving is not expressible with the static HtmlRenderer idiom the other
page tests use: it renders a root component once and exposes no parameter-update
seam. The new test therefore adds a minimal Renderer subclass whose only job is
to mount a component and drive a second SetParametersAsync into it while the
first is parked on a gated AuthenticationStateProvider. That subclass is the
lone reason for a narrowly scoped BL0006 suppression, justified in place: it is
test-only scaffolding that never ships, and the cost of the warning coming true
is a compile break in one test file on an SDK bump. Confirmed non-vacuous by
mutation — with the generation check disabled the test goes red on the doubled
subscription and the two passing ACL tests stay green.
Two decision-table corners are now pinned rather than implied. Admin x
nonexistent session id resolves to ALLOW, because the admin bypass is evaluated
before the registry lookup; a plausible "look the session up first, it reads
better" refactor would flip it, so a test documents the ordering. EventsHub's
remarks said "an unknown session id is denied" without qualification, which read
as universal; they now state that the bypass is checked first and every rule
below it is a non-Admin rule.
HubTokenServiceTests gains the truly-absent-field case: a hand-built payload
JSON with no Tags key at all, protected through the same purpose, which is the
shape every in-flight token has across the deploy that introduces the field. The
existing test covered present-but-empty, which does not exercise the null
coalesce that stands between a legacy token and a crash on the hub auth path.
ProtectorPurpose became internal so the test cannot drift from the real purpose
string.
Tag-count cardinality cap considered and recorded as a deliberate non-goal.
Build 0 warnings / 0 errors; 48 filtered (ACL/hub/token/page) and 257 dashboard
tests pass.
The truncation-cliff fix made alarm transitions truncation-safe but silent:
when GetXmlCurrentAlarms2 returns exactly maxAlmCnt records the worker
suppresses absence-implies-Clear inference and says so only in a rate-limited
stderr warning. No client and no operator could tell a complete active set
from a capped one.
Two additive proto3 booleans carry the verdict out:
- QueryActiveAlarmsReplyPayload.snapshot_truncated = 2 (worker IPC reply)
- ActiveAlarmSnapshot.from_truncated_snapshot = 16 (per record)
The per-record field is not an aesthetic choice. QueryActiveAlarms returns a
bare `stream ActiveAlarmSnapshot` with no envelope, header, or trailer, so a
per-record boolean is the only carrier that stays wire-compatible; an envelope
message would change every existing client's stream element type. The reply
payload states it too because a prefix filter can leave zero records and a
truncated fetch with nothing to report still has to say so. The flag means
"this set may be incomplete", never "this record is unreliable" — it is
independent of the subtag-fallback `degraded` field.
Detection is deliberately UNCHANGED: IsTruncatedFetch remains
`fetchedRecordCount >= maxAlarmsPerFetch`. The live probe (docs/AlarmProbeFindings.md,
ce5d8ae) could not verify whether ALARM_RECORDS/@COUNT reports the total active
count or only the records in the reply, so @COUNT is not parsed for detection;
switching to it stays blocked on probe evidence. The probe's comment
annotations in WnWrapAlarmConsumer.cs are preserved.
Reset semantics: not latched. WnWrapAlarmConsumer.FoldFetch replaces the
verdict on every poll under the same lock as the snapshot merge, so the first
sub-cap fetch clears it; GatewayAlarmMonitor.ClearCache drops it with the cache
generation it describes. A caveat that never turns off is one operators learn
to ignore.
Flow: WnWrapAlarmConsumer.LastSnapshotTruncated -> AlarmDispatcher (stamps every
record) / IAlarmCommandHandler (payload) -> MxAccessCommandExecutor reply ->
GatewayAlarmMonitor._snapshotTruncated -> IGatewayAlarmService.SnapshotTruncated
-> DashboardAlarmQueryResult -> AlarmsPage warning banner (render-side only; the
poll loop and DisposeAsync drain are untouched). The public QueryActiveAlarms
RPC forwards worker snapshots unmodified, so the per-record flag needed no
mapper change — a test pins that.
Parity: this describes OUR fetch mechanics — additive gateway metadata — not
MXAccess provider behavior. No event is synthesized and no MXAccess-observable
semantics change, so it is not a parity deviation.
Tests: worker LastSnapshotTruncated set/reset/consecutive-burst (windev-run);
gateway end-to-end truncated reply -> monitor -> public stream, with the
complete-reply control as the load-bearing assertion; AlarmsPage banner
present/absent. Docs: gateway.md alarm surface, docs/DesignDecisions.md entry.
Groundwork for the per-session dashboard event ACL (docs/plans/2026-07-10-dashboard-session-acl-tst15.md 3.2): a dashboard group can now grant visibility tags, and untagged sessions default to AdminOnly. Enforcement lands with the EventsHub ACL; nothing consumes the grant yet.
GroupToTag is deliberately uncoupled from GroupToRole - a group may appear in either map, both, or neither - and is validated for shape only. Tags gate dashboard event visibility, never data access.
The remediation reviews approved every task but left a tail of small notes.
This lands the gateway-side half of them.
Hardening (behavior changes, all narrow):
- BuildFilteredWriteBulkCommand's unreachable default case failed OPEN: a
fifth bulk-write kind added upstream without a filter case here would have
shipped the DENIED entries to the worker while reporting them denied to the
caller. It now throws UnreachableException.
- SqliteCanonicalAuditStore.ListRecentAsync no longer throws on a row it
cannot date. The retention sweep deliberately preserves such rows (SQLite's
datetime() yields NULL, so the DELETE never matches), which guaranteed the
dashboard's recent-audit view would meet one eventually and lose the whole
page to it. The row is now reported at DateTimeOffset.MinValue with every
other column intact, behind an optional logger.
- The audit drain loop's finally now completes the channel writer alongside
detaching the drain, so a producer that raced past the attached check takes
the write-through branch instead of stranding its event in a buffer nobody
reads until shutdown. TryComplete is idempotent, so StopAsync is unaffected.
Tests:
- MapCommandReply ownership (Assert.Same on the inner reply), mirroring the
existing MapEvent ownership test.
- Redactor key-id length boundary at exactly 64 and 65 characters, pinning
which way it fails. Nothing validates key-id length at creation, so
docs/Diagnostics.md's "which no issued key id does" is now stated as the
heuristic it is.
- ApiKeyFailureLimiter.Reset with a PartitionResolution whose partition was
evicted between the Check and the Reset: inert, and clears nobody else's
block.
- Constraint-cache concurrency stress: the cap is enforced by the inserting
thread, so overshoot must be transient and proportional to the in-flight
inserters, and the cache must settle at or under the cap.
- ListRecentAsync against a raw-SQL undateable row.
Comment/doc accuracy:
- EventsHubViewerRegistry.ReleaseConnection records that it relies on
SignalR's default sequential per-connection dispatch
(MaximumParallelInvocationsPerClient = 1).
- A PERF(followup) note on Invoke's double session resolve and why removing it
needs a SessionManager overload.
- SessionEventDistributor: the volatile-field comment named the pump as the
lock-free reader, but the pump's single capture point is inside _replayLock;
the genuinely lock-free reader is SubscriberCount. OnSubscriberOverflow's
"cannot be observed here" now excepts the DisposeAsync abandon path. The
churn test names its ConcurrentDictionary bucket-order assumption and that a
violation surfaces as a read timeout, not a silent pass.
- The two "restores the sequential drain's behavior" claims (SessionManager,
docs/Sessions.md) were wrong: the sequential drain leaked too, because
KillWorkerAsync's entry ThrowIfCancellationRequested aborted the whole loop
on the first session for zero kills. Reworded to "fixes a leak the
sequential drain also had", with the sweep-bound/shutdown-unbound
ParallelOptions asymmetry explained.
- ISessionManager.ShutdownAsync's token doc: it degrades the drain to a kill
sweep rather than cancelling it, with the bounded overrun stated.
SessionShutdownHostedService.StopAsync records that its cancellation-logging
branch is now unreachable.
Decrement was decrement-first with a single non-retried repair CAS. From zero,
two unmatched decrements (SignalR calls OnDisconnectedAsync for a connection
whose OnConnectedAsync faulted) capture -1 and -2; a real Increment then makes
the count -1, and the first decrementer's stale CompareExchange(0, -1) matches
and resets to zero — erasing a live connection, so the idle gate freezes an open
dashboard. The same lost race also made Decrement report 0 when it had not
written 0.
Clamping now happens inside the compare-and-swap: read, clamp, publish, retry on
loss. A lost race re-reads the fresh value instead of repairing a stale one.
The counter moves to its own file per the one-public-type-per-file convention and
gains direct tests: the zero floor under concurrent unmatched decrements, matched
pairs settling at zero, and an interleaved connect/disconnect stress round. The
stress test asserts the observable invariants only — the specific interleaving
cannot be forced through the public API (verified: the previous implementation
passes it), which its remarks now state rather than implying a reproducer. A hub
wiring test is skipped for the EventsHub reason: driving Hub.OnConnectedAsync
needs caller-clients and connection-context fakes, and the overrides are two
lines of delegation to the tested type.
Also documents that the API-key refresh's pre-gate time check races benignly.
The snapshot publisher broadcast to Clients.All on every ~1s tick forever, with
zero viewers. Each tick cost a session-registry snapshot and sort, a metrics
snapshot that copies dictionaries under the global metrics lock, a full rebuild
of EffectiveGatewayConfiguration, and a SQLite read of the API key table.
DashboardSnapshotHub now counts live connections into the singleton
DashboardSnapshotHubConnectionCounter (clamped at zero, since SignalR can call
OnDisconnectedAsync for a connection whose OnConnectedAsync faulted). The
publisher drives the snapshot enumerator by hand instead of await foreach: with
no connections it does not call MoveNextAsync at all, so the producing iterator
stays suspended at its yield and no snapshot is built — the gate removes the
build, not just the broadcast. It re-checks once a second, so the first viewer
resumes the tick within about one interval; that viewer is seeded immediately by
DashboardPageBase's synchronous GetSnapshot() and by the hub's OnConnectedAsync.
Two per-tick costs are bounded independently of the gate: the effective
configuration is startup-static (options are bound once at boot and never
reloaded), so it is built once and cached; and the API key summaries refresh at
most every 15s, since the list only changes when an operator creates, rotates,
or revokes a key. Only a successful refresh restarts the interval, so a failed
or timed-out read is still retried on the next tick with the previous summaries
left on screen.
DashboardEventBroadcaster.Publish ran a deep protobuf Clone (redaction is on by
default) and a group SendAsync for every event of every session, before anything
checked whether a dashboard client was actually watching. In the steady state the
session:{id} group is empty, so that work was thrown away per event.
SignalR does not expose group membership, so EventsHub now mirrors its own
add/remove into a singleton EventsHubViewerRegistry, and OnDisconnectedAsync
releases everything a dropped connection held (SessionDetailsPage disposes the
connection rather than unsubscribing). Publish returns early when the session has
no viewers, before the redaction clone. Watched sessions behave exactly as before.
Lazy mirror-lease start/stop was deliberately not attempted — it entangles the
dashboard with SessionEventDistributor subscribe lifetime for no saving beyond
this gate; recorded in docs/GatewayDashboardDesign.md.
Family-wide nav sweep: the Secrets management page should be linked from
each app's UI, visible to Administrator-role users only.
The link already existed in MainLayout's Admin section. The gate did not:
the rail rendered every item for every visitor, including a Viewer and the
anonymous-localhost read-only identity. Not an access hole — the mounted
page carries [Authorize(Policy = "secrets:manage")], so a Viewer clicking
through was denied — but a dead link presented as a live one. There was
also no existing role-gated nav pattern to follow; the rail's only
AuthorizeView was the footer's signed-in/signed-out split.
Gated on the POLICY rather than a role literal, so nav visibility cannot
drift from what the page enforces. In this host the two are equivalent:
GatewayOptionsValidator constrains Dashboard:GroupToRole values to
Administrator or Viewer, so the shared library's other manage-granting
roles (secrets-manager, secrets-reveal) are unreachable. The policy form
stays correct if that ever relaxes, where a role literal would then hide
the link from users who can use the page.
API Keys is deliberately left ungated. It looks like the same case and is
not: ApiKeysPage renders for a Viewer with write affordances hidden, so
hiding its link would remove legitimate read access. The secrets page has
no read-only mode. The rule is "gate the link when the page denies the
role outright", not "gate everything under Admin".
Coverage: three tests pin the policy's verdict per principal
(Administrator admitted, Viewer refused, unauthenticated refused), and
/admin/secrets joins the canonical route list — it is the one nav
destination mounted from an RCL rather than declared here, so a routing
regression could remove it without touching this repo's pages. The
principal helper sets an authentication type deliberately: without one
the role assertions would pass vacuously for the wrong reason.
Not a rendering test — the suite has no component-testing harness, and
adding one to assert a single AuthorizeView would be a large dependency
for a small claim.
Build 0 warnings / 0 errors; suite 895/895.
Auth 0.1.5 -> 0.2.0, Health 0.2.0 -> 0.3.0, Secrets/.Abstractions/.Ui
0.6.1 -> 0.6.2. Theme, GalaxyRepository, Audit, Configuration, Telemetry
and Telemetry.Serilog were already at the newest version on the feed.
Checked against the shared-lib source rather than the version numbers,
because these packages are versioned as a family and a bump is not by
itself evidence that the package changed:
- Auth 0.2.0 is the only one carrying content for us: LDAP backup-DC
failover (FallbackServers, endpoint walk with sticky preference,
boot-time entry validation). Purely additive; the default is empty,
which leaves single-endpoint behaviour unchanged.
- Health 0.3.0 carries a breaking change, but every line of it is in
ZB.MOM.WW.Health.Akka, which we do not reference. No commit touched
the core ZB.MOM.WW.Health package between 0.2.0 and 0.3.0.
- Secrets 0.6.2 is a message-only change: one validator string literal
gains mounted-volume guidance. SecretsStorePathRules is untouched.
The four non-csproj files are not a separate feature. Configuration/
LdapOptions is a deliberate shadow of the shared type and carries an
explicit warning to mirror any new upstream field, because AddZbLdapAuth
binds the whole MxGateway:Ldap section onto the shared options. So
FallbackServers is live on our config surface the moment the package
lands, and without the mirror an operator could configure a backup DC
that works but is invisible on the dashboard's Settings page. The
Settings row renders "none" when empty, since that is the answer someone
who believes a backup DC is configured actually needs.
Entry syntax is deliberately NOT re-validated here: the shared validator
already fails the boot on a malformed entry and owns the (internal)
parser, so a second copy would drift. Note both validators skip entirely
when Ldap:Enabled is false.
Verified the binder is non-strict (ErrorOnUnknownConfiguration is unused
anywhere in the tree), so the upgrade could not break startup on a
newly-recognised key either way.
Build 0 warnings / 0 errors; gateway suite 892/892, unchanged. The live
LDAP tests are opt-in and were not run, so the failover path itself is
covered only by the shared library's own tests.
Family-wide admin-UI cleanup pass (scadaproj admin_ui_cleanup.md) applied to the
Blazor dashboard. Behaviour is unchanged throughout — no @onclick, disabled,
binding, auth gate, or arm->confirm flow was touched.
Uncontrolled error text is now truncated at the render site. Fault messages,
Galaxy load errors, and browse-tree load failures were rendered in full into
fixed-width table cells, where a long exception string blows out the column.
Each site gets DashboardDisplay.Abbreviate plus a title attribute carrying the
untruncated text, so nothing becomes unreachable. Abbreviate is length-checked
rather than a bare range slice: `value[..n]` on a shorter string throws and
takes the whole page render down with it. The two detail views whose entire
purpose is to show one fault in full — SessionDetailsPage and GalaxyPage's
Last Error — are deliberately left untruncated.
Two classes referenced from markup had no definition anywhere in the sheet.
.browse-stale-banner was inert; .tree-load-status was a real visual defect —
loading and failed-to-load rows sit among .tree-row siblings and carry the same
leading .tree-toggle-empty spacer, but that spacer only takes its width as a
flex item, so without a flex container those rows lost their indent.
Confirm/cancel pairs in ConfirmDialog and the API-key create form are now
btn-groups with role="group" and an aria-label, replacing margin-spaced loose
buttons.
Removes a paragraph on GalaxyPage naming internal RPCs (DiscoverHierarchy,
GetLastDeployTime) — implementation detail with no meaning to a dashboard
operator.
Verified in a real browser, not bUnit: full build clean, 879/879 tests, and a
live gate against a running dashboard with a genuine ~250-char SqlClient
exception as the erroring row. Results per check, including the checks that
could NOT be exercised without an x86 worker, are recorded in
docs/plans/2026-08-11-dashboard-ui-sweeps.md.
That plan doc also records a correction: this app is NOT Bootstrap-free. The
sweep brief said it was, citing the scadaproj index; libman.json pins
bootstrap 5.3.3 and App.razor:7 links it ahead of the theme. The stale claim had
already cost this app one skipped family sweep (scadaproj#2, the /admin/secrets
modal), so that modal was live-gated here too and passes.
Resolve all CommentChecker findings across the gateway server, worker, tests,
and .NET client (314 -> 0 real issues): add missing <returns>/<summary>/<param>
on public and test members, convert Stream/interface overrides to <inheritdoc/>,
and remove internal task/issue tracking IDs (SEC-*, IPC-*, WRK-*, GWC-*, TST-*,
Client.Dotnet-*) from shipped code documentation while preserving the design
rationale prose. Shipped comments should not carry internal bookkeeping, and
complete XML docs keep the analyzer/TreatWarningsAsErrors gate and generated API
docs clean. The 6 remaining flags are heuristic false positives (MD5, UTC-4,
capacity-1, near-1601) left intact so real documentation is not corrupted.
Claude-Session: https://claude.ai/code/session_01DMXXvNuPekkkrTEyPNxEkW
SEC-25 (near-term hardening; full per-session EventsHub ACL stays deferred to
roadmap item 12): DashboardEventBroadcaster now redacts tag values from a deep
CLONE of the event before mirroring to SignalR when Dashboard:ShowTagValues is
false (the default). Clears MxEvent.value (covers OnDataChange/OnWriteComplete/
OperationComplete/OnBufferedDataChange — their bodies are empty discriminators,
values ride in the top-level field incl. buffered arrays) and the alarm body's
current_value/limit_value. Source event never mutated (shared with the gRPC
path + replay ring) - verified by a source-not-mutated test. Makes the formerly
dead ShowTagValues flag live for the mirror. EventsHub TODO(per-session-acl)
kept and tied to roadmap item 12. Tests: DashboardEventBroadcasterTests (3).
SEC-30: trim docs/Diagnostics.md to mark opt-in command-value logging as NOT
YET IMPLEMENTED (no LogCommandValues knob, RedactCommandValue has no call
sites, no values logged); wiring deferred pending secured-bulk redaction
coverage (SEC-13). No option/call sites added.
Server build clean (0 warnings); Dashboard tests 152/152.
Claude-Session: https://claude.ai/code/session_01DMXXvNuPekkkrTEyPNxEkW
Restore the __Host- browser guarantees for the default secure deployment
without breaking plaintext/dev:
- DashboardServiceCollectionExtensions PostConfigure now resolves the cookie
name as: explicit MxGateway:Dashboard:CookieName override wins; else
__Host-MxGatewayDashboard when SecurePolicy==Always (RequireHttpsCookie
true); else the plain MxGatewayDashboard default. Guard: never apply the
__Host- prefix without Secure (browsers silently drop it).
- DashboardAuthenticationDefaults: add SecureCookieName const; keep the plain
CookieName as the non-secure fallback.
- Docs corrected to the actual conditional contract (five stale claims):
gateway.md, GatewayProcessDesign.md, ImplementationPlanGateway.md,
GatewayDashboardDesign.md, CLAUDE.md; GatewayConfiguration.md phrasing
tightened.
- Test: DashboardCookieOptionsTests asserts the name flips with
RequireHttpsCookie and that an explicit override wins.
Server build clean (0 warnings); Dashboard tests 149/149.
Claude-Session: https://claude.ai/code/session_01DMXXvNuPekkkrTEyPNxEkW
Gateway-side follow-up to the shared auth-lib expiry core (delivered via G-2):
- apikey create-key gains optional --expires — absolute ISO-8601 UTC or relative
<N>d/<N>h from now; omitted means non-expiring (opt-in, unchanged default).
Threaded ApiKeyAdminCommand -> parser -> runner into the library's
CreateKeyAsync(..., expiresUtc, ...). list-keys shows an expiry column and an
active/expired/revoked status.
- Dashboard API Keys page surfaces expiry: an Expires column (Never when unset)
and a status badge reading Expired (red) / Expiring (<=7d, amber) / Revoked /
Active. DashboardApiKeySummary.ExpiresUtc projected in DashboardSnapshotService;
StatusBadge maps the new states.
Tests: parser (absolute/relative/invalid/none) + end-to-end past-expiry rejection
through the live verifier; dashboard summary suite green. Docs: Authentication.md
(verification-flow expiry step, CLI table + examples, dashboard badge).
Closes the tracked SEC-10 polish (SEC-10 core was already Done).
- SEC-02: DashboardAuthorizationHandler restricts the loopback and
Authentication:Mode=Disabled bypasses to read-only. They now satisfy only a
Viewer-bearing requirement (AnyDashboardRole), never AdminOnly, so anonymous
localhost can view the dashboard but cannot reach API-key CRUD or session
Close/Kill at the policy layer (previously guarded only by service re-checks).
- SEC-12: DashboardSessionAdminService emits canonical AuditEvents through
IAuditWriter (actions dashboard-close-session / dashboard-kill-worker, category
SessionAdmin) on Success/Failure/Denied, mirroring the API-key audit path so
destructive session actions leave durable, queryable rows.
- SEC-20: drop the unbounded session_id tag from the exported
mxgateway.heartbeats.failed counter (per-session detail stays in the snapshot/log).
Docs updated same-change: CLAUDE.md (read-only loopback + 5-min bearer),
GatewayDashboardDesign.md (bypass scoping + session-admin audit), Metrics.md.
Server build clean; 30/30 targeted + 295/295 Dashboard/Security/App/Metrics sweep.
SEC-07: add QueryActiveAlarmsRequest -> events:read scope arm; fix two tests that
constructed StreamAlarmsRequest instead of QueryActiveAlarmsRequest.
SEC-05: shorten hub-token lifetime 30m -> 5m; document that the ?access_token= query
carriage must never be request-logged.
SEC-08: gateway-side CachingApiKeyVerifier (short TTL, keyed on a hash of the presented
secret) skips the per-call store read+last_used write; CoalescingMarkApiKeyStore bounds
last_used writes to <=1/key/min; identity constraints are cached. Invalidation is wired
at the gateway admin sites (revoke/rotate/delete); short TTL backstops out-of-process CLI.
SEC-11: fixed-window rate limit on POST /auth/login + a per-peer (key-id) failure limiter
checked before VerifyAsync; new MxGateway:Security options bound + validated.
Also fixes regressions from the SEC-01/04/06 commit (c185f62) that a narrow test filter
missed (all now covered by a full-suite checkpoint):
- Rooting check is cross-platform: accepts Windows C:\/UNC forms on Unix so the shipped
appsettings path validates on the macOS dev box, still rejecting bare filenames.
- AddGatewayConfiguration TryAdds a non-production IHostEnvironment fallback so the validator
resolves in minimal test/tooling containers; the real host + apikey CLI register the actual
environment first (TryAdd no-op there).
- Test assembly defaults ASPNETCORE_ENVIRONMENT=Development (ModuleInitializer) so full-host
tests exercise wiring instead of tripping the SEC-04/06 production guards.
- GatewayOptionsTests asserts the SEC-01 CommonApplicationData-derived default (platform-correct).
archreview: SEC-07/05/08/11 (P1). Verified: NonWindows build clean; full gateway suite
747 passed / 42 failed, where all 42 are the pre-existing macOS named-pipe-harness failures
(Unix-socket path limit) and 0 are validation/regression failures.
Resolves Server-059, Tests-041, Server-060 (2026-06-25 re-review).
DashboardSnapshotService memoized the whole Galaxy summary keyed on the cache
Sequence, but the shared library bumps Sequence only on a heavy refresh: the
steady-state tick, the refresh-failure path, and the age-based status getter all
replace the entry via 'previous with { ... }' at the SAME Sequence. The dashboard
therefore froze LastQueriedAt and, during a Galaxy SQL outage, kept showing
Healthy with no error for the whole outage.
Split DashboardGalaxySummaryProjector into ComputeBreakdown (the O(N) template/
category work, the only sequence-bound part) and BuildSummary (cheap volatile
fields copied fresh). ResolveGalaxySummary now memoizes only the breakdown by
Sequence and rebuilds the summary from the current entry each tick. Removed the
redundant DashboardGalaxyProjector wrapper.
Tests: same-sequence status/error/timestamp now reflected (the regression);
memoization-hit and sequence-invalidation guards; GatewayApplicationTests asserts
the DI container resolves IGalaxyBrowseScopeProvider to GatewayBrowseScopeProvider
(pins the registration-order invariant over the library's no-op default).
Joseph Doherty