Fixes

src/Squidex.Domain.Apps.Read/State/Orleans/Grains/Implementations/AppStateGrain.cs

@@ -11,6 +11,7 @@ using System.Collections.Generic;
 using System.Threading.Tasks;
 using Orleans;
 using Orleans.Concurrency;
+using Orleans.Runtime;
 using Squidex.Domain.Apps.Core.Schemas;
 using Squidex.Domain.Apps.Read.Apps;
 using Squidex.Domain.Apps.Read.Rules;
@@ -23,6 +24,7 @@ namespace Squidex.Domain.Apps.Read.State.Orleans.Grains.Implementations
     public sealed class AppStateGrain : Grain<AppStateGrainState>, IAppStateGrain
     {
         private readonly FieldRegistry fieldRegistry;
+        private Exception exception;
 
         public AppStateGrain(FieldRegistry fieldRegistry)
         {
@@ -31,6 +33,26 @@ namespace Squidex.Domain.Apps.Read.State.Orleans.Grains.Implementations
             this.fieldRegistry = fieldRegistry;
         }
 
+        public override void Participate(IGrainLifecycle lifecycle)
+        {
+            lifecycle.Subscribe(GrainLifecycleStage.Activate, ct => OnActivateAsync(), ct => OnDeactivateAsync());
+            lifecycle.Subscribe(GrainLifecycleStage.SetupState, ct => LoadStateAsync());
+        }
+
+        private async Task LoadStateAsync()
+        {
+            try
+            {
+                await this.ReadStateAsync();
+            }
+            catch (Exception ex)
+            {
+                exception = ex;
+
+                State = new AppStateGrainState();
+            }
+        }
+
         public override Task OnActivateAsync()
         {
             State.SetRegistry(fieldRegistry);

src/Squidex.Domain.Apps.Read/State/Orleans/Grains/Implementations/AppStateGrainState.cs

@@ -44,17 +44,17 @@ namespace Squidex.Domain.Apps.Read.State.Orleans.Grains.Implementations
 
         public ISchemaEntity FindSchema(Func<JsonSchemaEntity, bool> filter)
         {
-            return Schemas.Values.FirstOrDefault(filter);
+            return Schemas.Values?.FirstOrDefault(filter);
         }
 
         public List<IRuleEntity> FindRules()
         {
-            return Rules.Values.OfType<IRuleEntity>().ToList();
+            return Rules.Values?.OfType<IRuleEntity>().ToList() ?? new List<IRuleEntity>();
         }
 
         public List<ISchemaEntity> FindSchemas(Func<JsonSchemaEntity, bool> filter)
         {
-            return Schemas.Values.Where(filter).OfType<ISchemaEntity>().ToList();
+            return Schemas.Values?.Where(filter).OfType<ISchemaEntity>().ToList() ?? new List<ISchemaEntity>();
         }
 
         public void Reset()

src/Squidex/Config/Orleans/ClientServices.cs

@@ -6,6 +6,7 @@
 //  All rights reserved.
 // ==========================================================================
 
+using System;
 using System.Reflection;
 using Microsoft.Extensions.DependencyInjection;
 using Orleans;
@@ -32,6 +33,10 @@ namespace Squidex.Config.Orleans
                     .AddApplicationPartsFromReferences(typeof(AppStateGrain).Assembly)
                     .AddApplicationPartsFromReferences(typeof(EventConsumerGrain).Assembly)
                     .AddApplicationPartsFromReferences(typeof(XmlRepositoryGrain).Assembly)
+                    .UseStaticGatewayListProvider(options =>
+                    {
+                        options.Gateways.Add(new Uri("gwy.tcp://localhost:40000/0"));
+                    })
                     .Build();
 
                 client.Connect().Wait();

src/Squidex/Config/Orleans/SiloServices.cs

@@ -55,13 +55,6 @@ namespace Squidex.Config.Orleans
                         });
                     }
 
-                    services.AddMongoDBGatewayListProvider(c =>
-                    {
-                        c.ConnectionString = mongoConfiguration;
-                        c.CollectionPrefix = "Orleans_";
-                        c.DatabaseName = mongoDatabaseName;
-                    });
-
                     services.AddMongoDBMembershipTable(c =>
                     {
                         c.ConnectionString = mongoConfiguration;