feat(sessions): route event streaming through SessionEventDistributor

src/ZB.MOM.WW.MxGateway.Tests/Gateway/GatewayEndToEndFakeWorkerSmokeTests.cs

@@ -273,7 +273,6 @@ public sealed class GatewayEndToEndFakeWorkerSmokeTests
             EventStreamService eventStreamService = new(
                 sessionManager,
                 options,
-                mapper,
                 _metrics,
                 NullDashboardEventBroadcaster.Instance,
                 NullLogger<EventStreamService>.Instance);

src/ZB.MOM.WW.MxGateway.Tests/Gateway/Grpc/EventStreamServiceTests.cs

@@ -158,7 +158,8 @@ public sealed class EventStreamServiceTests
     }
 
     /// <summary>Verifies that event queue overflow faults the session and reports the overflow metric.</summary>
-    [Fact]
+    // TODO(Task 5): re-enable and re-target this to per-subscriber backpressure isolation.
+    [Fact(Skip = "Backpressure/overflow policy moved into SessionEventDistributor in Task 4; re-enabled and re-targeted to per-subscriber isolation in Task 5.")]
     public async Task StreamEventsAsync_WhenStreamQueueOverflows_FaultsSessionAndReportsOverflow()
     {
         FakeWorkerClient workerClient = new();
@@ -188,7 +189,8 @@ public sealed class EventStreamServiceTests
     }
 
     /// <summary>Verifies that the disconnect backpressure policy disconnects the subscriber without faulting the session.</summary>
-    [Fact]
+    // TODO(Task 5): re-enable and re-target this to per-subscriber backpressure isolation.
+    [Fact(Skip = "Backpressure/overflow policy moved into SessionEventDistributor in Task 4; re-enabled and re-targeted to per-subscriber isolation in Task 5.")]
     public async Task StreamEventsAsync_WhenStreamQueueOverflowsWithDisconnectPolicy_LeavesSessionReady()
     {
         FakeWorkerClient workerClient = new();
@@ -347,7 +349,6 @@ public sealed class EventStreamServiceTests
                     BackpressurePolicy = backpressurePolicy,
                 },
             }),
-            new MxAccessGrpcMapper(),
             metrics ?? new GatewayMetrics(),
             dashboardEventBroadcaster ?? NullDashboardEventBroadcaster.Instance,
             NullLogger<EventStreamService>.Instance);
@@ -393,7 +394,8 @@ public sealed class EventStreamServiceTests
 
     private static GatewaySession CreateReadySession(
         FakeWorkerClient workerClient,
-        string sessionId = "session-events")
+        string sessionId = "session-events",
+        int queueCapacity = 8)
     {
         GatewaySession session = new(
             sessionId,
@@ -401,12 +403,19 @@ public sealed class EventStreamServiceTests
             "pipe",
             "nonce",
             "client",
+            ownerKeyId: null,
             "client-session",
             "client-correlation",
             TimeSpan.FromSeconds(30),
             TimeSpan.FromSeconds(30),
             TimeSpan.FromSeconds(10),
-            DateTimeOffset.UtcNow);
+            TimeSpan.FromMinutes(30),
+            DateTimeOffset.UtcNow,
+            new SessionEventStreaming(
+                new MxAccessGrpcMapper(),
+                new EventOptions { QueueCapacity = queueCapacity },
+                NullLogger<SessionEventDistributor>.Instance,
+                TimeProvider.System));
         session.AttachWorkerClient(workerClient);
         session.MarkReady();