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Refine Data Connection Layer: error handling, reconnection, write failures, health reporting

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Add connection lifecycle (fixed-interval auto-reconnect, immediate bad quality on
disconnect, transparent re-subscribe), synchronous write failure errors to scripts,
periodic tag path resolution retry, and enhanced health reporting with tag resolution
counts. Update cross-references in Health Monitoring and Site Runtime.
This commit is contained in:
Joseph Doherty
2026-03-16 07:51:37 -04:00
parent f0108e161b
commit 19c7e6880f
4 changed files with 89 additions and 2 deletions
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Component-SiteRuntime.md
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@@ -103,7 +103,7 @@ Deployment Manager Singleton (Cluster Singleton)
### GetAttribute / SetAttribute
- **GetAttribute**: Returns the current in-memory value for the requested attribute.
- **SetAttribute** (for attributes with data source reference): Sends a write request to the Data Connection Layer. The DCL writes to the physical device. The existing subscription picks up the confirmed value from the device and sends it back as a value update, which then updates the in-memory value. The in-memory value is **not** optimistically updated.
- **SetAttribute** (for attributes with data source reference): Sends a write request to the Data Connection Layer. The DCL writes to the physical device. If the write fails (connection down, device rejection, timeout), the error is returned synchronously to the calling script for handling. On success, the existing subscription picks up the confirmed value from the device and sends it back as a value update, which then updates the in-memory value. The in-memory value is **not** optimistically updated.
- **SetAttribute** (for static attributes): Updates the in-memory value directly. This change is ephemeral — it is lost on restart and resets to the deployed configuration value.
### Debug View Support