Adds three KPI tiles to the central Health dashboard for the Audit channel:
volume (rows in the last hour), error rate (Failed/Parked/Discarded over
total), and backlog (sum of SiteAuditBacklog.PendingCount across all sites).
Repo + service:
- IAuditLogRepository.GetKpiSnapshotAsync(window, nowUtc) — single aggregate
SELECT over the trailing window returning total + error counts; nowUtc is
optional for production callers and pinned by integration tests against the
shared MSSQL fixture so the global counts are deterministic.
- AuditLogQueryService.GetKpiSnapshotAsync() — composes the repo aggregate
with a sum of SiteAuditBacklog.PendingCount read from ICentralHealthAggregator.
- AuditLogKpiSnapshot record in Commons/Types/.
UI:
- New AuditKpiTiles Blazor component (Components/Health/) — three Bootstrap
card-tiles, click navigates to /audit/log with the matching pre-filter.
- Health.razor wires the tiles in alongside the existing Notification Outbox
KPIs; LoadAuditKpis() runs on every 10s refresh tick and degrades to em
dashes + inline error if the query fails.
- AuditLogPage extended to parse ?status= so the error-rate tile drill-in
(?status=Failed) auto-loads the grid.
Tests:
- AuditLogRepositoryTests: GetKpiSnapshotAsync mixed-status + empty-window
cases against the MSSQL migration fixture.
- AuditLogQueryServiceTests: forwarding + backlog composition; sites with
null SiteAuditBacklog contribute zero.
- AuditKpiTilesTests: 9 bUnit tests covering tile render, error-rate maths
with safe zero-events handling, em-dash unavailable path, click-through
navigation, and warning/danger border thresholds.
- HealthPageTests: new Renders_AuditKpiTiles_WithValues plus IAuditLogQueryService
stub registration in the constructor so existing outbox tests still pass.
- AuditLogPageScaffoldTests: ?status=Failed auto-load + unknown status drop.
Central singleton (M6-T4 Bundle C) that drives the daily AuditLog partition
purge. On a configurable timer (default 24 hours) the actor:
1. Queries IAuditLogRepository.GetPartitionBoundariesOlderThanAsync for
monthly boundaries whose latest OccurredAtUtc is older than
DateTime.UtcNow - AuditLogOptions.RetentionDays.
2. For each eligible boundary calls SwitchOutPartitionAsync, which runs
the drop-and-rebuild dance around UX_AuditLog_EventId.
3. Publishes AuditLogPurgedEvent(boundary, rowsDeleted, durationMs) on
the actor-system EventStream so the Bundle E central health collector
and ops surfaces can subscribe without coupling to this actor.
Co-changes:
* SwitchOutPartitionAsync returns long (rows deleted) — sampled BEFORE the
switch via COUNT_BIG over the per-partition filter so the count
reflects what the switch removed, not a post-purge scan of a table that
no longer exists. All stub implementations updated.
* AuditLogPurgeOptions: IntervalHours (default 24), IntervalOverride for
tests, Interval property resolving either.
* AuditLogPurgedEvent: record with MonthBoundary, RowsDeleted, DurationMs.
Behavior:
* Continue-on-error per boundary — one partition that throws does NOT
abandon the rest of the tick.
* DI scope opened per tick (IAuditLogRepository is a SCOPED EF Core
service); mirrors SiteAuditReconciliationActor and AuditLogIngestActor.
* SupervisorStrategy Resume keeps the singleton alive across leaked
exceptions.
* EventStream capture BEFORE the first await — Context is unsafe after
await in async receive handlers (same pattern as Sender-capture in
AuditLogIngestActor.OnIngestAsync).
Tests:
* Tick_Fires_OnDailyInterval — visible timer side effect.
* Tick_OldPartitions_SwitchedOut — both seeded boundaries purged.
* Tick_NewerPartitions_Untouched — empty enumerator → no switches.
* Tick_PublishesPurgedEvent_WithRowCount — AuditLogPurgedEvent carries
RowsDeleted and DurationMs.
* Tick_SwitchThrows_OtherPartitionsStillProcessed — continue-on-error.
* Threshold_UsesAuditLogOptionsRetentionDays — non-default 30-day window
computed from UtcNow - RetentionDays.
* EndToEnd_RealPartition_RowsRemoved_PurgedEventPublished — TestKit +
MsSqlMigrationFixture: real partitioned table, Jan-2026 row purged,
Apr-2026 row kept, AuditLogPurgedEvent observed via probe.
Replaces M1's NotSupportedException stub with the production drop-DROP-INDEX
→ CREATE-staging → SWITCH PARTITION → DROP-staging → CREATE-INDEX dance
documented in alog.md §4. UX_AuditLog_EventId is intentionally non-aligned
with ps_AuditLog_Month so single-column EventId uniqueness can be enforced
cheaply for InsertIfNotExistsAsync; SQL Server rejects ALTER TABLE SWITCH
while a non-aligned unique index is present, so the implementation drops
it, switches the partition data into a GUID-suffixed staging table on
[PRIMARY], drops staging (discarding the rows), and rebuilds the unique
index — all inside an explicit transaction with a CATCH that guarantees
the unique index is rebuilt regardless of failure point.
Also adds GetPartitionBoundariesOlderThanAsync to IAuditLogRepository: a
CROSS APPLY over sys.partition_range_values + per-partition MAX(OccurredAtUtc)
to enumerate retention-eligible months for the M6 purge actor (next commit).
Tests verify:
* Old partition's rows are removed; other months untouched
* UX_AuditLog_EventId is rebuilt after a successful switch
* InsertIfNotExistsAsync's first-write-wins idempotency still holds after switch
* On engineered SWITCH failure (inbound FK from a probe table), SqlException
propagates AND UX_AuditLog_EventId is still present (CATCH branch ran)
* GetPartitionBoundariesOlderThanAsync returns only boundaries whose partition's
MAX(OccurredAtUtc) is strictly older than the threshold; empty partitions
excluded
Bundle B3 of Audit Log #23 M3: data-access layer for the central SiteCalls
table introduced in B1+B2. UpsertAsync is insert-if-not-exists then
monotonic-status update so out-of-order telemetry, duplicate gRPC packets,
and reconciliation pulls all converge on the same row without rolling
state backward.
- src/ScadaLink.Commons/Interfaces/Repositories/ISiteCallAuditRepository.cs:
UpsertAsync (monotonic), GetAsync, QueryAsync, PurgeTerminalAsync.
- src/ScadaLink.Commons/Types/Audit/SiteCallQueryFilter.cs +
SiteCallPaging.cs: filter (Channel/SourceSite/Status/Target/time range)
and keyset paging cursor on (CreatedAtUtc DESC, TrackedOperationId DESC),
mirrored on M1's AuditLog* equivalents.
- src/ScadaLink.ConfigurationDatabase/Repositories/SiteCallAuditRepository.cs:
raw-SQL InsertIfNotExists + conditional UPDATE with inline CASE rank
compare (Submitted=0, Forwarded=1, Attempted/Skipped=2, terminal=3 —
terminal statuses are mutually exclusive so e.g. Delivered cannot
overwrite Parked). Duplicate-key violations (SQL 2601/2627) are
swallowed at Debug, identical to AuditLogRepository's race-fix.
QueryAsync uses FromSqlInterpolated because EF Core 10 cannot translate
string.Compare against the value-converted TrackedOperationId column
inside an expression tree.
- ServiceCollectionExtensions wires the repository (scoped, after
IAuditLogRepository).
- 12 integration tests in tests/ScadaLink.ConfigurationDatabase.Tests/
Repositories/ (MsSqlMigrationFixture + [SkippableFact]): fresh insert,
monotonic advance, older-status no-op, same-status no-op,
terminal-over-terminal no-op, 50-way concurrent-insert race produces
exactly one row, Get known/unknown, filter by site, keyset paging no
overlap, purge terminal-and-old, purge keeps non-terminal-and-recent.
Append-only data-access surface for the central AuditLog table — three
methods: InsertIfNotExistsAsync (first-write-wins on EventId), QueryAsync
(filter + keyset paging on (OccurredAtUtc desc, EventId desc)), and
SwitchOutPartitionAsync (M1 honest contract — throws NotSupported until
M6 lands the non-aligned-index drop/rebuild dance for the partition
switch). No Update, no row-delete; bulk purge is partition-only.
Bundle D of the Audit Log #23 M1 Foundation plan.
Deleting an instance only undeployed it from the site and set the state
to NotDeployed, leaving an orphan record that could never be removed —
the state-transition matrix rejected delete from NotDeployed.
Delete now removes the instance record entirely (deployment history,
snapshot, attribute/alarm overrides, and connection bindings go with
it), and is permitted from any state.
Adds a new HiLo alarm trigger type with four configurable setpoints
(LoLo / Lo / Hi / HiHi). Each setpoint carries an optional priority,
deadband (for hysteresis), and operator message. The site runtime emits
AlarmStateChanged with an AlarmLevel field so consumers can differentiate
warning vs critical bands.
Plumbing:
- new AlarmLevel enum + AlarmStateChanged.Level/Message init properties
- AlarmTriggerEditor (Blazor) gets a HiLo render with severity tinting
- AlarmTriggerConfigCodec extracted from the editor for testability
- sitestream.proto carries level + message over gRPC
- SemanticValidator enforces numeric attribute, setpoint ordering,
non-negative deadband
- on-trigger scripts get an Alarm global (Name/Level/Priority/Message)
so notification routing can branch by severity
- per-instance InstanceAlarmOverride entity + EF migration + flattening
step + CLI commands; HiLo overrides merge setpoint-by-setpoint, binary
types whole-replace
- DebugView shows a Level badge + per-band message tooltip
- App.razor auto-reloads on permanent Blazor circuit failure
- docker/regen-proto.sh automates the proto regen workflow (the linux/arm64
protoc segfault means generated files are checked in for now)
Two caveats from the script-scope rollout addressed:
1. ITemplateEngineRepository.GetTemplatesComposingAsync — a scoped
query that returns only the templates referencing a given template
via Compositions, eager-loaded with their Attributes / Scripts /
Compositions. Replaces the GetAllTemplatesAsync + filter pattern
in TemplateEdit so the Monaco metadata fetch doesn't pull the
entire template catalog to find one parent.
2. Multi-parent picker. The previous implementation suppressed Parent
assistance entirely when more than one template composes the open
one. Now TemplateEdit collects every parent into _editorParents
and renders a small `select` above the script editor when there
are >1, letting the user choose which parent's metadata drives
Parent.Attributes / Parent.CallScript completion + diagnostics.
Single-parent templates skip the picker (no UI change). Zero
parents (root template) hide the picker and surface no Parent
assistance.
Browser-verified on the Sensor Module template (composed by both Pump
and Variable Speed Motor): picker shows both options, switching
updates the editor's parent metadata immediately via the existing
GetContext callback.
Test counts unchanged (159 / 199); the new repo method is exercised
end-to-end by the parent-picker browser path.
Replace SiteDataConnectionAssignment join table with a direct SiteId FK on DataConnection,
simplifying the data model, repositories, UI, CLI, and deployment service.
Bootstrap served locally with absolute paths and <base href="/">.
LDAP auth uses search-then-bind with service account for GLAuth compatibility.
CookieAuthenticationStateProvider reads HttpContext.User instead of parsing JWT.
Login/logout forms opt out of Blazor enhanced nav (data-enhance="false").
Nav links use absolute paths; seed data includes Design/Deployment group mappings.
DataConnections page loads all connections (not just site-assigned).
Site appsettings configured for Test Plant A; Site registers with Central on startup.
DeploymentService resolves string site identifier for Akka routing.
Instances page gains Create Instance form.
Joseph Doherty