Implement Galaxy filters and API key constraints

src/MxGateway.Tests/Gateway/GatewayEndToEndFakeWorkerSmokeTests.cs

@@ -8,6 +8,7 @@ using MxGateway.Contracts.Proto;
 using MxGateway.Server.Configuration;
 using MxGateway.Server.Grpc;
 using MxGateway.Server.Metrics;
+using MxGateway.Server.Security.Authentication;
 using MxGateway.Server.Security.Authorization;
 using MxGateway.Server.Sessions;
 using MxGateway.Server.Workers;
@@ -171,6 +172,7 @@ public sealed class GatewayEndToEndFakeWorkerSmokeTests
             Service = new MxAccessGatewayService(
                 sessionManager,
                 new GatewayRequestIdentityAccessor(),
+                new AllowAllConstraintEnforcer(),
                 new MxAccessGrpcRequestValidator(),
                 mapper,
                 eventStreamService,
@@ -437,4 +439,33 @@ public sealed class GatewayEndToEndFakeWorkerSmokeTests
             throw new NotSupportedException();
         }
     }
+
+    private sealed class AllowAllConstraintEnforcer : IConstraintEnforcer
+    {
+        public Task<ConstraintFailure?> CheckReadTagAsync(
+            ApiKeyIdentity? identity,
+            string tagAddress,
+            CancellationToken cancellationToken) => Task.FromResult<ConstraintFailure?>(null);
+
+        public Task<ConstraintFailure?> CheckReadHandleAsync(
+            ApiKeyIdentity? identity,
+            GatewaySession session,
+            int serverHandle,
+            int itemHandle,
+            CancellationToken cancellationToken) => Task.FromResult<ConstraintFailure?>(null);
+
+        public Task<ConstraintFailure?> CheckWriteHandleAsync(
+            ApiKeyIdentity? identity,
+            GatewaySession session,
+            int serverHandle,
+            int itemHandle,
+            CancellationToken cancellationToken) => Task.FromResult<ConstraintFailure?>(null);
+
+        public Task RecordDenialAsync(
+            ApiKeyIdentity? identity,
+            string commandKind,
+            string target,
+            ConstraintFailure failure,
+            CancellationToken cancellationToken) => Task.CompletedTask;
+    }
 }