The largest themed batch — small mechanical fixes across 11 modules.
API / message hygiene:
- Comm-020: SiteAddressCacheLoaded now carries IReadOnlyDictionary /
IReadOnlyList — Akka messages must be immutable.
- Commons-016: BundleSession.MaxUnlockAttempts named constant replaces
magic 3.
- Commons-018: IOperationTrackingStore + IPartitionMaintenance moved from
Interfaces/ root to Interfaces/Services/ (namespace preserved — 9
consumers exceeded the in-prompt move threshold).
- Commons-023: TrackingStatusSnapshot.SourceNode now consistent with the
trailing-optional-with-default pattern used elsewhere.
- SR-022: AuditingDbCommand.DbConnection.set no longer uses reflection —
exposes AuditingDbConnection.Inner via internal API surface.
Dead code / config cleanup:
- ClusterInfra-011: decorative SectionName constant deleted.
- ClusterInfra-014: dead AddClusterInfrastructureActors method + its
"throws-when-called" test deleted.
- Host-021: Microsoft Logging:LogLevel block deleted from appsettings.json
(dead under Serilog).
Fail-loud over fail-silent:
- DM-021: ResolveSiteIdentifierAsync throws on missing site (was silently
substituting a DB id).
- DM-022: dropped transient Pending write — record now lands directly in
InProgress (no UI flicker, one fewer DB write).
- Host-020: LoggerConfigurationFactory emits a Console.Error warning when
both Serilog:MinimumLevel and ScadaLink:Logging:MinimumLevel are set
(ScadaLink remains truth per Host-011).
- SnF-022: NotifyCachedCallObserverAsync logs Warning on unparseable
TrackedOperationId (was silently dropping).
- SnF-023: empty siteId default replaced with $unknown-site sentinel
+ constructor normalisation.
Correctness:
- SCA-001: SupervisorStrategy XML rewritten to match actual
DefaultDecider/Restart semantics (was claiming Resume).
- SCA-003: OnUpsertAsync now restamps IngestedAtUtc on every upsert.
- SR-021: HandleDeployArtifacts now dispatches an internal
ApplyArtifactDataConnectionsToDcl message after the SQLite write so
system-wide artifact-deploy data-connection changes go live
immediately (was requiring a site restart).
- SnF-020: RetryParkedMessageAsync captures the parked row BEFORE the
local write so a concurrent delete can't skip standby replication.
Sentinels / naming collisions:
- HM-021: CentralSiteId changed from "central" to "$central"
(uncollideable — leading $ is forbidden in real SiteIdentifiers).
Doc / surface cleanups:
- SEL-018: FailedWriteCount promoted to ISiteEventLogger; XML softened
to "Available for future Health Monitoring integration".
- SnF-019: VERIFY outcome — documented parking-after-DefaultMaxRetries
in Component-StoreAndForward.md + DefaultMaxRetries XML (uniform
cap; maxRetries:0 is the unbounded escape hatch).
- SnF-021: Component-StoreAndForward.md no longer claims the tracking
table lives in SnF — it's in SiteRuntime, the interface is in Commons.
- CLI-020: bundle export response parse guarded with try/catch on
JsonException / KeyNotFoundException / FormatException — emits a
clean INVALID_RESPONSE exit instead of a stack trace.
Config:
- ClusterInfra-013: intent comment added to "catastrophic config" test.
- Host-016: appsettings.Site.json second CentralContactPoints entry
removed (was pointing at the SITE's own port); doc-key explains how
to extend.
- Host-018: NodeName added to both shipped per-role configs (was
causing SourceNode to be null on audit rows).
UI:
- CentralUI-029: replaced JS.InvokeAsync<int>("eval", …) with an ES
module import (new wwwroot/js/browser-time.js).
- CentralUI-032: AuditResultsGrid gains a Previous button backed by a
cursor stack.
10+ new regression tests across the affected projects. Build clean;
all suites green. README regenerated: 6 open (was 33).
Session-to-date: 130 of 136 originally-open Theme findings closed.
Well-localised perf fixes across 8 modules.
Lock decoupling / SQL streaming:
- AuditLog-005: SqliteAuditWriter gains dedicated read-only _readConnection
(+ _readLock) backed by WAL journal mode. GetBacklogStatsAsync,
ReadPendingAsync, ReadPendingSinceAsync, ReadForwardedAsync no longer
contend with the hot-path INSERT lock — backlog probes on a 30s timer
can't stall the writer under multi-hundred-K Pending backlog.
- SEL-022: dropped Cache=Shared from SiteEventLogger's default connection
string (single-connection logger; mode was dormant config).
Memory / streaming:
- CLI-019: bundle export streams base64 in 1 MB-aligned chunks via
Convert.TryFromBase64Chars straight into the FileStream — no more
full-bundle byte[] allocation.
- CentralUI-031: TransportImport now stages the upload to a per-session
temp file under Path.GetTempPath() (replaces in-memory byte[] field);
page implements IDisposable to delete the temp file on reset / new
upload / dispose. Per-circuit working set drops from ~100 MB to ~80 KB.
N+1 hoisting:
- Transport-008: added ITemplateEngineRepository.GetTemplatesWithChildrenAsync
bulk method; BundleImporter.PreviewAsync calls it once instead of per-
template-name. Single query with .Include(...).AsSplitQuery().
- DM-023: BuildDeployArtifactsCommandAsync's per-site loop now references
a pre-fetched GlobalArtifactSnapshot (shared scripts, external systems,
DB connections, notification lists, SMTP) instead of re-querying per site.
- MgmtSvc-023: HandleQueryDeployments unfiltered branch uses one
GetAllInstancesAsync bulk load + Dictionary<int,int?> lookup (was a
GetInstanceByIdAsync per record).
Small allocations / per-tick rebuilds:
- InboundAPI-019: AuditWriteMiddleware gates EnableBuffering() on
RequestHasBody() so GET/HEAD/DELETE/TRACE/OPTIONS and Content-Length:0
requests skip the FileBufferingReadStream allocation.
- NotifOutbox-006: ResolveAdapters dictionary now cached on
_adaptersCache (built lazily on first sweep) + actor-lifetime
_adaptersScope; ResolveAdapters no longer rebuilds per dispatch tick.
Verify-only:
- Comm-017: Confirmed _inProgressDeployments was deleted by Comm-016 in
commit ac96b83 — marked Resolved with that attribution. No code change.
Doc-correction:
- NS-022: Updated MailKitSmtpClientWrapper XML doc to spell out single-
connection / per-delivery-factory contract (option (b) — transient
client per Send — rejected because it re-handshakes TLS per email).
10+ new regression tests across 8 test projects. Build clean; affected
suites all green. README regenerated: 54 open (was 65).
Async cancellation hygiene, fire-and-forget observability, retry/shutdown
semantics, and audit-row coverage across 9 modules. Highlights:
Cancellation & lifecycle:
- AuditLog-006: SqliteAuditWriter.Dispose hops to thread pool, escaping the
captured SyncContext that risked sync-over-async deadlock.
- AuditLog-010: SiteAuditTelemetryActor owns a private lifecycle CTS,
threaded through drain paths instead of CancellationToken.None.
- Comm-019: CentralCommunicationActor adds lifecycle CTS for repo calls.
- Host-019: Migration StartupRetry forwards ApplicationStopping so SIGTERM
during the bounded-retry window aborts cleanly.
Cursor / retry / counter correctness:
- AuditLog-004: SiteAuditReconciliationActor's cursor now holds at `since`
when any row's idempotent insert is still being retried (per-EventId
retry counter, MaxPermanentInsertAttempts=5 escape valve with LogCritical
abandon). No more silent abandonment of permanently-failing rows.
- ConfigDB-019: Dropped the catch-and-continue on EnsureLookaheadAsync's
SPLIT loop — by class-doc construction the catch could only mask real
failures and let the next iteration create permanent partition holes.
- HM-017/018: HealthReportSender + CentralHealthReportLoop snapshot
per-interval counters before sending, restore via new
ISiteHealthCollector.AddIntervalCounters on transport failure so counts
aren't silently lost.
Fire-and-forget / shutdown waits:
- InboundAPI-018: AuditWriteMiddleware observes faulted audit-write tasks
via OnlyOnFaulted continuation (Warning log; response unchanged).
- SnF-024: StoreAndForwardService.StopAsync awaits in-flight retry sweep
with a bounded SweepShutdownWaitTimeout (10s).
Leak / refactor:
- Comm-021: SiteStreamGrpcServer.SubscribeInstance wraps Subscribe in its
own try/catch so a throw doesn't leak the relay actor or _activeStreams
entry.
- Comm-022: VERIFIED already-closed by Comm-016's dead-code purge.
- CLI-017: BundleCommands' three subcommands delegate to ExecuteCommandAsync
(auth-failure exit-code contract unified).
Defensive / validation:
- CLI-021: CliConfig.Load wraps file-read/JSON parse so malformed config
prints a warning and returns defaults instead of crashing the CLI.
- Host-022: ParseLevel emits stderr one-shot warning for unrecognised
MinimumLevel instead of silently coercing to Information.
- ESG-019: ExternalSystemClient sets HttpClient.Timeout=Infinite so the
per-call CTS is the sole timeout source (was clipped to 100s by .NET).
- Security-020: New SecurityOptionsValidator (IValidateOptions) rejects
empty LdapServer/LdapSearchBase with ValidateOnStart.
- DM-019: Lifecycle command timeouts now emit DisableTimedOut/EnableTimedOut/
DeleteTimedOut audit entries (mirrors DeployFailed pattern).
Plus reconciled stale per-module Open-findings counters that had drifted
from prior sessions.
20+ new regression tests across 11 test projects; build clean; affected
suites all green. README regenerated: 75 open (was 93).
Comm-016: delete dead HandleConnectionStateChanged + _debugSubscriptions /
_inProgressDeployments tracking + ConnectionStateChanged message record.
Disconnect detection is owned by the transport layers (gRPC keepalive PING
~25s; Ask-timeout at CommunicationService). Updates the
Component-Communication.md design doc to make that explicit.
SnF-018: NotificationForwarder.DeliverAsync now discards a corrupt buffered
payload (Warning log + return true) instead of returning false and parking
the row — honoring the design's "notifications do not park" invariant.
DM-018: reconciliation no longer force-sets Enabled, preserving an
intentional Disabled state after central failover.
ESG-018: DeliverBufferedAsync (both ExternalSystemClient + DatabaseGateway)
catches JsonException and returns false, turning a corrupt buffered row
into a parked operation instead of a retry-forever poison message.
InboundAPI-022: register ActiveNodeGate as IActiveNodeGate in the Central
DI branch so standby-node gating is actually wired up in production.
NS-019: remove orphaned NotificationDeliveryService /
INotificationDeliveryService / NotificationResult; central notification
delivery now lives entirely in NotificationOutbox.
SEL-016: normalise From/To filters to UTC before ISO-string compare so
non-UTC DateTimeOffset clients no longer get spuriously excluded events.
TE-017: include Description on attributes/alarms and a HashableConnections
projection (protocol, endpoint JSON, failover count) in the revision hash
and DiffService; staleness detection now catches description-only and
connection-endpoint edits.
Transport-001 and Transport-002 (also High) remain Open — they're being
handled in a follow-up batch because both touch BundleImporter.cs and
must serialise.
Re-applies the full 10-category checklist to every src/ project — including
first-time reviews of the four newer components (AuditLog, NotificationOutbox,
SiteCallAudit, Transport) — so the code-reviews/ index reflects today's
codebase rather than the 2026-05-16 baseline. 172 new Open findings (0
Critical, 18 High, 62 Medium, 92 Low); 481 findings total across 23 modules.
regen-readme.py now derives each module's Last reviewed + Commit from its
findings.md header instead of hard-coding 2026-05-16 / 9c60592, so future
single-module re-reviews show their own date in the Module Status table.
DebugStreamService.StartStreamAsync awaited the initial debug snapshot inside
a try whose only handler was catch (OperationCanceledException). When the
stream terminated before the snapshot arrived, onTerminatedWrapper completed
the await with an InvalidOperationException that escaped the catch — the
caller got a raw, untranslated exception and the service did no teardown of
its own on that path.
Replaced with catch (Exception): it removes the session entry, sends
StopDebugStream to the bridge actor via the local reference (deterministic
teardown, idempotent), and throws a descriptive exception — TimeoutException
for the 30s timeout, otherwise an InvalidOperationException naming the
instance/site and wrapping the cause.
Re-triaged Critical -> Medium: the originally-claimed multi-minute site-side
resource leak does not occur (the bridge actor self-terminates on every
onTerminated path). Adds the first DebugStreamService test, which fails
against the pre-fix code.
Establishes a per-module code review workflow under code-reviews/ and
records the 2026-05-16 baseline review (commit 9c60592): 241 findings
across all src/ modules (6 Critical, 46 High, 100 Medium, 89 Low).
This is the clean starting point for remediation work.
Joseph Doherty