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)
Phase 1 of the design at
docs/plans/2026-05-12-derive-on-compose-design.md.
Additive schema only — no behavior changes. Existing data and code
paths continue to work; subsequent phases will start writing the
new fields.
Template gains:
IsDerived true when this row was auto-created to back
a composition slot
OwnerCompositionId back-ref to the owning TemplateComposition
(plain int, not an EF nav property — managed
by TemplateService for cascade-delete)
TemplateAttribute / TemplateScript each gain:
IsInherited row copied from base and not yet overridden;
changes to the base flow downward
LockedInDerived on a base, blocks derived from overriding;
enforced at the service layer in later phases
EF Core migration AddDerivedTemplateFields adds four columns:
Templates.IsDerived bit NOT NULL DEFAULT 0
Templates.OwnerCompositionId int NULL
TemplateAttributes.IsInherited bit NOT NULL DEFAULT 0
TemplateAttributes.LockedInDerived bit NOT NULL DEFAULT 0
TemplateScripts.IsInherited bit NOT NULL DEFAULT 0
TemplateScripts.LockedInDerived bit NOT NULL DEFAULT 0
Existing rows get the defaults. Tests across SiteRuntime / TemplateEngine
/ CentralUI suites stay green (129 / 199 / 159).
Next: phase 2 — wire AddCompositionAsync to derive on compose for
new compositions. Old data still flows the direct-reference path
until phase 3's migration script.
Replace SiteDataConnectionAssignment join table with a direct SiteId FK on DataConnection,
simplifying the data model, repositories, UI, CLI, and deployment service.
Central now resolves site Akka remoting addresses from the Sites DB table
(NodeAAddress/NodeBAddress) instead of relying on runtime RegisterSite
messages. Eliminates the race condition where sites starting before central
had their registration dead-lettered. Addresses are cached in
CentralCommunicationActor with 60s periodic refresh and on-demand refresh
when sites are added/edited/deleted via UI or CLI.
Joseph Doherty