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Fix remoting logging DefaultAddress race condition #7305

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Arkatufus
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Fixes #7304

var defaultAddress = system.AsInstanceOf<ExtendedActorSystem>().Provider.DefaultAddress;

This line can throw an NRE if remoting is not up and running yet
ExtendedActorSystem.Provider.DefaultAddress => RemoteActorRefProvider.DefaultAddress => Transport.DefaultAddress <-- Transport property is null

Changes

Make sure that we catch any NRE thrown when Logging tries to access ExtendedActorSystem.Provider.DefaultAddress

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@Arkatufus Arkatufus left a comment

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self review

@@ -189,7 +189,7 @@ public ActorPath RootPath
public Deployer Deployer { get; protected set; }

/// <inheritdoc/>
public Address DefaultAddress { get { return Transport.DefaultAddress; } }
public Address DefaultAddress { get { return Transport?.DefaultAddress; } }
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Make sure we return null instead of throwing an NRE if Transport is still null.

catch // can fail if the ActorSystem (remoting) is not completely started yet
{
return a.Path.ToString();
}
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Second guard to make sure that, in the event that any exception is thrown, we still return a valid actor path

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@Aaronontheweb Aaronontheweb left a comment

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LGTM

@Aaronontheweb Aaronontheweb enabled auto-merge (squash) July 25, 2024 23:28
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LGTM

@Aaronontheweb Aaronontheweb merged commit 3e2d49c into akkadotnet:dev Jul 26, 2024
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Race condition between Logging and Remote when creating custom loggers
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