Files
lmxopcua/src/Core/ZB.MOM.WW.OtOpcUa.Core.Abstractions/DriverTier.cs
T
Joseph Doherty a25593a9c6 chore: organize solution into module folders (Core/Server/Drivers/Client/Tooling)
Group all 69 projects into category subfolders under src/ and tests/ so the
Rider Solution Explorer mirrors the module structure. Folders: Core, Server,
Drivers (with a nested Driver CLIs subfolder), Client, Tooling.

- Move every project folder on disk with git mv (history preserved as renames).
- Recompute relative paths in 57 .csproj files: cross-category ProjectReferences,
  the lib/ HintPath+None refs in Driver.Historian.Wonderware, and the external
  mxaccessgw refs in Driver.Galaxy and its test project.
- Rebuild ZB.MOM.WW.OtOpcUa.slnx with nested solution folders.
- Re-prefix project paths in functional scripts (e2e, compliance, smoke SQL,
  integration, install).

Build green (0 errors); unit tests pass. Docs left for a separate pass.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
2026-05-17 01:55:28 -04:00

35 lines
1.7 KiB
C#

namespace ZB.MOM.WW.OtOpcUa.Core.Abstractions;
/// <summary>
/// Stability tier of a driver type. Determines which cross-cutting runtime protections
/// apply — per-tier retry defaults, memory-tracking thresholds, and whether out-of-process
/// supervision with process-level recycle is in play.
/// </summary>
/// <remarks>
/// Per <c>docs/v2/driver-stability.md</c> §2-4 and <c>docs/v2/plan.md</c> decisions #63-74.
///
/// <list type="bullet">
/// <item><b>A</b> — managed, known-good SDK; low blast radius. In-process. Fast retries.
/// Examples: OPC UA Client (OPCFoundation stack), S7 (S7NetPlus).</item>
/// <item><b>B</b> — native or semi-trusted SDK with an in-process footprint. Examples: Modbus.</item>
/// <item><b>C</b> — unmanaged SDK with COM/STA constraints, leak risk, or other out-of-process
/// requirements. Must run as a separate Host process behind a Proxy with a supervisor that
/// can recycle the process on hard-breach. Example: Galaxy (MXAccess COM).</item>
/// </list>
///
/// <para>Process-kill protections (<c>MemoryRecycle</c>, <c>ScheduledRecycleScheduler</c>) are
/// Tier C only per decisions #73-74 and #145 — killing an in-process Tier A/B driver also kills
/// every OPC UA session and every co-hosted driver, blast-radius worse than the leak.</para>
/// </remarks>
public enum DriverTier
{
/// <summary>Managed SDK, in-process, low blast radius.</summary>
A,
/// <summary>Native or semi-trusted SDK, in-process.</summary>
B,
/// <summary>Unmanaged SDK, out-of-process required with Proxy+Host+Supervisor.</summary>
C,
}