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Add Browse and Alarms dashboard tabs

Browse Source 
Browse renders the Galaxy hierarchy tree from IGalaxyHierarchyCache:
expandable areas/objects with attribute name, data type and the
alarm/historized flags, plus a name/reference filter. Right-click or
double-click an attribute to add it to a subscription panel that polls
live value, quality and source timestamp every two seconds.

Alarms lists the worker's currently-active alarm set via
IAlarmRpcDispatcher, defaulting to unacknowledged Active alarms with
filters for acknowledged alarms, area, severity range and text. It is
read-only and warns when alarm auto-subscribe is disabled.

Both tabs read live MXAccess data through a new singleton
DashboardLiveDataService that owns one shared, lazily-opened gateway
session (one worker) for the whole dashboard, re-opened transparently
if it faults or its lease expires.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
Joseph Doherty
2026-05-21 13:53:28 -04:00
parent b39848b5f5
commit c1fe7fbc4a
15 changed files with 1763 additions and 2 deletions
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gateway.md
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@@ -113,13 +113,20 @@ project without binding to a metrics exporter.
`DashboardSnapshotService` projects sessions, workers, metrics, faults, and
effective configuration into immutable DTOs for read-only dashboard rendering.
The Blazor Server dashboard renders those snapshots at `/dashboard`,
`/dashboard/sessions`, `/dashboard/workers`, `/dashboard/events`, and
`/dashboard/settings`. Components subscribe to
`/dashboard/sessions`, `/dashboard/workers`, `/dashboard/events`,
`/dashboard/galaxy`, and `/dashboard/settings`. Components subscribe to
`IDashboardSnapshotService.WatchSnapshotsAsync()` and update on the configured
snapshot interval without mutating session or worker state. The dashboard uses
local Bootstrap CSS and JavaScript plus a small local stylesheet; it does not
use a Blazor UI component library.
`/dashboard/browse` and `/dashboard/alarms` go beyond read-only snapshots: they
read live MXAccess data through `IDashboardLiveDataService`, which owns one
shared, lazily-opened gateway session (and therefore one worker) for the whole
dashboard. Browse walks the `IGalaxyHierarchyCache` tree and reads subscribed
tag values; Alarms lists the worker's currently-active alarm set. See
`docs/GatewayDashboardDesign.md`.
Dashboard routes use the same API-key verifier as gRPC. `/dashboard/login`
accepts the API key in a form body, validates the configured `admin` scope,
and issues an HTTP-only secure cookie for subsequent dashboard requests.