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Resolve DA, A&C, and security spec gaps with ServerCapabilities, alarm methods, and modern profiles

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Add ServerCapabilities/OperationLimits node, enable diagnostics, add OnModifyMonitoredItemsComplete
override for DA compliance. Wire shelving, enable/disable, confirm, and addcomment handlers on
alarm conditions with LocalTime/Quality event fields for Part 9 compliance. Add Aes128/Aes256
security profiles, X.509 certificate authentication, and AUDIT-prefixed auth logging. Fix flaky
probe monitor test. Update docs for all changes.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Joseph Doherty
2026-04-06 22:02:05 -04:00
parent 41f0e9ec4c
commit 6d47687573
12 changed files with 345 additions and 20 deletions
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docs/AlarmTracking.md
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@@ -57,6 +57,29 @@ Key configuration on the condition node:
The condition's `OnReportEvent` callback forwards events to `Server.ReportEvent` so they reach clients subscribed at the server level.
### Condition Methods
Each alarm condition supports the following OPC UA Part 9 methods:
- **Acknowledge** (`OnAcknowledge`) -- Writes the acknowledgment message to the Galaxy `AckMsg` tag. Requires the `AlarmAck` role.
- **Confirm** (`OnConfirm`) -- Confirms a previously acknowledged alarm. The SDK manages the `ConfirmedState` transition.
- **AddComment** (`OnAddComment`) -- Attaches an operator comment to the condition for audit trail purposes.
- **Enable / Disable** (`OnEnableDisable`) -- Activates or deactivates alarm monitoring for the specific condition. The SDK manages the `EnabledState` transition.
- **Shelve** (`OnShelve`) -- Supports `TimedShelve`, `OneShotShelve`, and `Unshelve` operations. The SDK manages the `ShelvedStateMachineType` state transitions including automatic timed unshelve.
- **TimedUnshelve** (`OnTimedUnshelve`) -- Automatically called by the SDK when a timed shelve period expires.
### Event Fields
Alarm events include the following fields:
- `EventId` -- Unique GUID for each event, used as reference for Acknowledge/Confirm
- `ActiveState`, `AckedState`, `ConfirmedState` -- State transitions
- `Message` -- Alarm message from Galaxy `DescAttrName` or default text
- `Severity` -- Galaxy Priority clamped to OPC UA range 1-1000
- `Retain` -- True while alarm is active or unacknowledged
- `LocalTime` -- Server timezone offset with daylight saving flag
- `Quality` -- Set to Good for alarm events
## Auto-subscription to Alarm Tags
After alarm condition nodes are created, `SubscribeAlarmTags` opens MXAccess subscriptions for three tags per alarm: