refactor: rename ScadaLink → ZB.MOM.WW.ScadaBridge (code + projects + namespaces)

Solution + 23 src projects + 26 test projects renamed; folders, csproj, namespaces, and ScadaLinkDbContext/ScadaBridgeDbContext class updated. ActorSystem "scadalink" → "scadabridge", Akka seed-node URLs migrated. SQL roles/logins, LDAP domains, CLI command name, and CLI config dir (~/.scadalink → ~/.scadabridge) also renamed. Build green; 5 Host.Tests fail awaiting SQL login rename in next commit. Pre-existing StaleTagMonitor timing flakes unchanged. Rename script committed at tools/rename-to-scadabridge.sh.
2026-05-28 09:37:45 -04:00
parent 6d87ee3c3b
commit 7b0b9c7365
1531 changed files with 11180 additions and 11054 deletions
@@ -0,0 +1,55 @@
+using Microsoft.Extensions.Hosting;
+using Microsoft.Extensions.Logging;
+using ZB.MOM.WW.ScadaBridge.Commons.Interfaces.Transport;
+
+namespace ZB.MOM.WW.ScadaBridge.Transport.Import;
+
+/// <summary>
+/// T-007: periodic background sweep that drives <see cref="IBundleSessionStore.EvictExpired"/>
+/// so abandoned import sessions clear from memory on their own, without needing a
+/// new <see cref="IBundleSessionStore.Get"/> to trigger lazy eviction. Each session
+/// owns the decrypted bundle content (potentially up to ~100 MB of secrets — DB
+/// connection strings, SMTP credentials, external-system auth configs), and the
+/// design contract is "bundles are not retained server-side after ApplyAsync
+/// commits". This service keeps abandoned / failed sessions from pinning that
+/// plaintext for the full 30-minute TTL when no other traffic flows.
+/// </summary>
+internal sealed class BundleSessionEvictionService : BackgroundService
+{
+    private static readonly TimeSpan SweepInterval = TimeSpan.FromMinutes(1);
+
+    private readonly IBundleSessionStore _sessionStore;
+    private readonly ILogger<BundleSessionEvictionService> _logger;
+
+    public BundleSessionEvictionService(
+        IBundleSessionStore sessionStore,
+        ILogger<BundleSessionEvictionService> logger)
+    {
+        _sessionStore = sessionStore ?? throw new ArgumentNullException(nameof(sessionStore));
+        _logger = logger ?? throw new ArgumentNullException(nameof(logger));
+    }
+
+    protected override async Task ExecuteAsync(CancellationToken stoppingToken)
+    {
+        while (!stoppingToken.IsCancellationRequested)
+        {
+            try
+            {
+                await Task.Delay(SweepInterval, stoppingToken).ConfigureAwait(false);
+            }
+            catch (OperationCanceledException) when (stoppingToken.IsCancellationRequested)
+            {
+                return;
+            }
+
+            try
+            {
+                _sessionStore.EvictExpired();
+            }
+            catch (Exception ex)
+            {
+                _logger.LogWarning(ex, "Bundle session sweep failed; will retry on next interval.");
+            }
+        }
+    }
+}