gateway.md describes the always-on GatewayAlarmMonitor, the session-less
StreamAlarms feed, and session-less AcknowledgeAlarm. DesignDecisions.md
records that the v1 "one subscriber per session / no fan-out" rule is
superseded for the alarm subsystem: alarm state is gateway-wide, so the
gateway monitors it centrally and fans it out to all clients.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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>
Adds five new MXAccess command kinds (WriteBulk, Write2Bulk,
WriteSecuredBulk, WriteSecured2Bulk, ReadBulk) that ride the existing
"one round-trip, per-entry results" bulk shape used by AddItemBulk and
SubscribeBulk today. MXAccess COM has no native bulk API; the worker
runs each bulk operation as a sequential loop on its STA, returning
one BulkWriteResult / BulkReadResult per requested entry so per-item
MXAccess failures surface as was_successful=false rather than throwing.
ReadBulk has no MXAccess analogue. The worker satisfies it by:
- Returning the last cached OnDataChange payload (was_cached=true)
when the requested tag is already in the session''s item registry
AND advised — the existing subscription is NOT touched, since the
caller did not create it.
- Otherwise taking the AddItem + Advise + wait-for-OnDataChange +
UnAdvise + RemoveItem snapshot lifecycle itself (was_cached=false)
and leaving the session exactly as it was. The wait pumps Windows
messages on the STA so the inbound MXAccess event can dispatch
while the executor still holds the thread.
The new MxAccessValueCache lives on each MxAccessSession, shared with
MxAccessBaseEventSink which populates it on every OnDataChange after
the event clears the outbound queue. Eviction on RemoveItem keeps
reused MXAccess handles from serving stale values from a previous
lifetime.
Gateway-side authorization wires WriteBulk/Write2Bulk to invoke:write,
WriteSecuredBulk/WriteSecured2Bulk to invoke:secure, ReadBulk to
invoke:read. The constraint-filter pipeline is refactored from a single
BulkConstraintPlan record into an abstract base plus three concretes
(SubscribeBulk, WriteBulk, ReadBulk), each owning its own denied-entry
merge so the dispatch site never branches on reply shape. A new
FilterWriteBulkAsync<TEntry> generic over the four write-entry shapes
runs CheckWriteHandleAsync per entry; denied entries surface as the
BulkWriteResult shape, preserving original-index order.
All five language clients (.NET, Go, Rust, Python, Java) gained the
five new methods following their existing bulk pattern, with regenerated
protobufs.
Tests added:
- MxAccessValueCacheTests (6 cases) — Set/TryGet, Remove resets the
version, TryWaitForUpdate signals on Set, pump step fires each poll.
- MxAccessBaseEventSinkTests — OnDataChange populates the cache,
ValueCache property exposes the bound instance.
- MxAccessCommandExecutorTests — four bulk-write variants (per-entry
success/failure, value+timestamp forwarding, secured user ids),
ReadBulk snapshot lifecycle on uncached tag (timeout surfaces as
was_successful=false), invalid-payload reply.
- GatewayGrpcScopeResolverTests — five new MxCommandKind cases.
- SessionManagerTests — WriteBulk and ReadBulk forwarding through
FakeWorkerHarness; ReadBulk forwards timeout_ms.
- Per-client (.NET, Go, Rust, Python, Java) — WriteBulk builds the
right command and returns per-entry results, ReadBulk forwards the
timeout and unpacks the was_cached flag.
Cross-language e2e CLI subcommands for the new bulks are deliberately
scoped out of this change (each of the five client CLIs would need
five new subcommands plus matching phases in
scripts/run-client-e2e-tests.ps1); coverage equivalent to the existing
bulk-subscribe coverage is provided by worker + gateway + per-client
unit tests.
Docs updated in the same commit: gateway.md (Public MXAccess Command
Surface), docs/DesignDecisions.md (new "Bulk Command Family" section
with the ReadBulk cache-then-snapshot rationale), and every client
README.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Server-002: the gateway never terminated leftover MxGateway.Worker.exe
processes at startup, contradicting gateway.md and CLAUDE.md. Added
IRunningProcessInspector/SystemRunningProcessInspector, OrphanWorkerTerminator,
and OrphanWorkerCleanupHostedService (best-effort, runs before sessions are
accepted); updated gateway.md to describe the implemented behavior.
Server-004: API-key scopes were persisted verbatim with no validation. Added
GatewayScopes.All/IsKnown; the CLI parser and dashboard create path now
reject unknown scope strings.
Server-005: a non-SqlException/InvalidOperationException fault on the initial
Galaxy hierarchy load faulted the BackgroundService. ExecuteAsync now catches
all non-cancellation exceptions on first load and RefreshCoreAsync broadens
its catch so the cache records Stale/Unavailable instead.
Server-006: OpenSessionAsync incremented the open-sessions gauge before
alarm auto-subscribe; an auto-subscribe failure leaked the gauge. The catch
path now calls SessionRemoved() when the gauge was incremented.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
- Rename 16 kebab-case docs to PascalCase per StyleGuide
- Move per-language client design docs from docs/ to clients/<lang>/
alongside their READMEs
- Add ## Related Documentation sections to 15 docs that lacked one
- Fix sentence-case violations in H3 headings (StyleGuide rule)
- Update cross-references in gateway.md, client READMEs, scripts,
and generate-proto.ps1 helpers to follow the new paths
- Add CLAUDE.md with build/test commands, the source-update
verification matrix, the parity-first contract, and pointers
to MXAccess and Galaxy Repository analysis sources
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Joseph Doherty