feat(hosts): driver diagnostics channel on /hosts, S7 negotiated PDU size first (#640)

Claude-Session: https://claude.ai/code/session_01Ef2ozxS7QPanGT8uoATbTe
2026-10-08 16:57:38 -04:00
parent a8b07ae12d
commit c2bdb7d5de
23 changed files with 469 additions and 20 deletions
@@ -82,6 +82,12 @@ message DriverHealth {
  // proto3, which a repeated field does not. So no companion has_ flag (and one would collide: protoc
  // already generates a HasSkippedTags property for this field).
  SkippedTags skipped_tags = 12;
+  // Driver diagnostics bag (Gitea #640), e.g. S7's negotiated PDU size. Additive: an old node never sets
+  // these and an old central ignores them. A map cannot distinguish absent from empty, and the two differ
+  // ("driver has no IDriverDiagnostics" vs "it has one and currently has nothing to say"), so the presence
+  // flag carries that bit - the same shape as has_host_statuses.
+  bool has_diagnostics = 13;
+  map<string, string> diagnostics = 14;
 }

 // Mirrors ZB.MOM.WW.OtOpcUa.Core.Abstractions.SkippedTagReport.