Intermittent errors when resolving game sessions

[jmderuty]

Intermittently, an error occurs in the default game finder resolver. This is probably a concurrency issue.

  {
    "message": "An unhandled async exception occurred : 'System.AggregateException: A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (Instances cannot be resolved and nested lifetimes cannot be created from this LifetimeScope as it (or one of its parent scopes) has already been disposed.)\n ---> System.ObjectDisposedException: Instances cannot be resolved and nested lifetimes cannot be created from this LifetimeScope as it (or one of its parent scopes) has already been disposed.\n   at Autofac.Core.Lifetime.LifetimeScope.ThrowDisposedException()\n   at Autofac.Core.Lifetime.LifetimeScope.ResolveComponent(ResolveRequest& request)\n   at Autofac.Features.LazyDependencies.LazyRegistrationSource.<>c__DisplayClass3_0`1.<ResolveInstance>b__0()\n   at System.Lazy`1.ViaFactory(LazyThreadSafetyMode mode)\n   at System.Lazy`1.ExecutionAndPublication(LazyHelper executionAndPublication, Boolean useDefaultConstructor)\n   at System.Lazy`1.CreateValue()\n   at Stormancer.Server.Plugins.GameSession.GameSessions.Create(String template, String id, GameSessionConfiguration config, CancellationToken cancellationToken) in /_/src/Stormancer.Plugins/GameSession/Stormancer.Server.Plugins.GameSession/IGameSessions.cs:line 140\n   at Stormancer.Server.Plugins.GameFinder.PartyGameFinderResolver.ResolveGame(IGameResolverContext gameCtx) in /_/src/Stormancer.Plugins/GameFinder/Stormancer.Server.Plugins.GameFinder/PartyGameFinder/PartyGameFinderResolver.cs:line 104\n   at Stormancer.Server.Plugins.GameFinder.GameFinderService.ResolveGameFound(IGameCandidate gameCandidate, Dictionary`2 waitingParties, IGameFinderResolver resolver, CancellationToken cancellationToken) in /_/src/Stormancer.Plugins/GameFinder/Stormancer.Server.Plugins.GameFinder/GameFinderService.cs:line 483\n   at Stormancer.Server.Plugins.GameFinder.GameFinderService.ResolveGameFound(IGameCandidate gameCandidate, Dictionary`2 waitingParties, IGameFinderResolver resolver, CancellationToken cancellationToken) in /_/src/Stormancer.Plugins/GameFinder/Stormancer.Server.Plugins.GameFinder/GameFinderService.cs:line 615\n   --- End of inner exception stack trace ---'",
    "data": {
      "content": {
        "Type": "AggregateException",
        "Message": "A Task's exception(s) were not observed either by Waiting on the Task or accessing its Exception property. As a result, the unobserved exception was rethrown by the finalizer thread. (Instances cannot be resolved and nested lifetimes cannot be created from this LifetimeScope as it (or one of its parent scopes) has already been disposed.)",
        "Frames": [],
        "InnerExceptions": [
          {
            "Type": "ObjectDisposedException",
            "Message": "Instances cannot be resolved and nested lifetimes cannot be created from this LifetimeScope as it (or one of its parent scopes) has already been disposed.",
            "Frames": [ "   at Autofac.Core.Lifetime.LifetimeScope.ThrowDisposedException()", "   at Autofac.Core.Lifetime.LifetimeScope.ResolveComponent(ResolveRequest& request)", "   at Autofac.Features.LazyDependencies.LazyRegistrationSource.<>c__DisplayClass3_0`1.<ResolveInstance>b__0()", "   at System.Lazy`1.ViaFactory(LazyThreadSafetyMode mode)", "   at System.Lazy`1.ExecutionAndPublication(LazyHelper executionAndPublication, Boolean useDefaultConstructor)", "   at System.Lazy`1.CreateValue()", "   at Stormancer.Server.Plugins.GameSession.GameSessions.Create(String template, String id, GameSessionConfiguration config, CancellationToken cancellationToken) in /_/src/Stormancer.Plugins/GameSession/Stormancer.Server.Plugins.GameSession/IGameSessions.cs:line 140", "   at Stormancer.Server.Plugins.GameFinder.PartyGameFinderResolver.ResolveGame(IGameResolverContext gameCtx) in /_/src/Stormancer.Plugins/GameFinder/Stormancer.Server.Plugins.GameFinder/PartyGameFinder/PartyGameFinderResolver.cs:line 104", "   at Stormancer.Server.Plugins.GameFinder.GameFinderService.ResolveGameFound(IGameCandidate gameCandidate, Dictionary`2 waitingParties, IGameFinderResolver resolver, CancellationToken cancellationToken) in /_/src/Stormancer.Plugins/GameFinder/Stormancer.Server.Plugins.GameFinder/GameFinderService.cs:line 483", "   at Stormancer.Server.Plugins.GameFinder.GameFinderService.ResolveGameFound(IGameCandidate gameCandidate, Dictionary`2 waitingParties, IGameFinderResolver resolver, CancellationToken cancellationToken) in /_/src/Stormancer.Plugins/GameFinder/Stormancer.Server.Plugins.GameFinder/GameFinderService.cs:line 615" ],
            "InnerExceptions": []
          }
        ]
      },
      "app": "/darktales/live-1-00-04/7308ada5-50fb-4b86-8ab6-f32a7b5ea0e4/4?"
    }
  }