/// <summary>
/// Create an exception handler based on specified exception to handle.
/// </summary>
/// <param name="exception">The exception to handle.</param>
/// <param name="postHandlingAction">A <see cref="PostHandlingAction"/> determining what action should occur after an exception is handled by the configured exception handling chain. </param>
/// <returns>A <see cref="Func{TExceptionContext, Task}"/> representing the exception handler.</returns>
public Func <ExceptionContext, Task> CreateExceptionHandler(Exception exception, out PostHandlingAction postHandlingAction)
{
Guard.ArgumentNotNull(exception, nameof(exception));
ExceptionPolicyEntry policyEntry = this.GetPolicyEntry(exception.GetType());
postHandlingAction = policyEntry.PostHandlingAction;
return(async context =>
{
await this.PreHandler(context);
await policyEntry.ExceptionHandler(context);
await this.PostHandler(context);
});
}
public async Task<Exception> HandleException(Exception exception, Guid handlingId)
{
ExceptionContext context = new ExceptionContext(Guard.ArgumentNotNull(exception, nameof(exception)), Guard.ArgumentNotNullOrEmpty(handlingId, nameof(handlingId)));
ExceptionPolicyEntry policyEntry = this.GetPolicyEntry(exception.GetType());
try
{
await this.PreHandler(context);
await policyEntry.ExceptionHandler(context);
await this.PostHandler(context);
switch (policyEntry.PostHandlingAction)
{
case PostHandlingAction.ThrowNew: return context.Exception;
case PostHandlingAction.ThrowOriginal: return context.OriginalException;
default: return null;
}
}
catch (Exception ex)
{
return new ExceptionHandlingException(Resources.ExceptionHandlingError, ex);
}
}