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Class ExceptionHandlingFrame ​

Namespace: Momentum.ServiceDefaults.Messaging.Middlewares
Assembly: Momentum.ServiceDefaults.dll

Wolverine code generation frame that wraps message handlers in try-catch blocks for exception handling.

csharp
[ExcludeFromCodeCoverage]
public class ExceptionHandlingFrame : SyncFrame

Inheritance ​

object ← Frame ← SyncFrame ← ExceptionHandlingFrame

Inherited Members ​

Frame.creates, Frame.dependencies, Frame.uses, Frame.Create(Type), Frame.Create<T>(), Frame.Create<T>(string), Frame.GenerateCode(GeneratedMethod, ISourceWriter), Frame.GenerateFSharpCode(GeneratedMethod, ISourceWriter), Frame.ResolveVariables(IMethodVariables), Frame.FindVariables(IMethodVariables), Frame.CanReturnTask(), Frame.AllFrames(), Frame.IsAsync, Frame.Wraps, Frame.Next, Frame.Uses, Frame.Creates, Frame.Dependencies, object.GetType(), object.MemberwiseClone(), object.ToString(), object.Equals(object?), object.Equals(object?, object?), object.ReferenceEquals(object?, object?), object.GetHashCode()

Remarks ​

This frame generates code that:

  • Wraps the handler execution in a try-catch block
  • Captures any exceptions in the envelope's Failure property
  • Re-throws the exception for Wolverine's error handling pipeline

This ensures that exceptions are properly tracked in the message envelope for logging and metrics purposes while still allowing Wolverine to handle retries and DLQ.

Constructors ​

ExceptionHandlingFrame() ​

csharp
public ExceptionHandlingFrame()

Methods ​

FindVariables(IMethodVariables) ​

Identifies required variables for code generation.

csharp
public override IEnumerable<Variable> FindVariables(IMethodVariables chain)

Parameters ​

chain IMethodVariables

The method variables available in the handler chain.

Returns ​

IEnumerable<Variable>

The envelope variable needed for exception tracking.

GenerateCode(GeneratedMethod, ISourceWriter) ​

Generates the try-catch code wrapping for exception handling.

csharp
public override void GenerateCode(GeneratedMethod method, ISourceWriter writer)

Parameters ​

method GeneratedMethod

The generated method being built.

writer ISourceWriter

The source code writer.

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