FallbackResiliencePipelineBuilderExtensions
Extensions for adding fallback to ResiliencePipelineBuilder.
using Polly.Fallback;
using Polly.Utils;
using System.Diagnostics.CodeAnalysis;
using System.Runtime.CompilerServices;
namespace Polly
{
[System.Runtime.CompilerServices.NullableContext(1)]
[System.Runtime.CompilerServices.Nullable(0)]
public static class FallbackResiliencePipelineBuilderExtensions
{
[System.Diagnostics.CodeAnalysis.UnconditionalSuppressMessage("Trimming", "IL2026:Members annotated with 'RequiresUnreferencedCodeAttribute' require dynamic access otherwise can break functionality when trimming application code", Justification = "All options members preserved.")]
public static ResiliencePipelineBuilder<TResult> AddFallback<[System.Runtime.CompilerServices.Nullable(2)] [System.Diagnostics.CodeAnalysis.DynamicallyAccessedMembers(System.Diagnostics.CodeAnalysis.DynamicallyAccessedMemberTypes.All)] TResult>(this ResiliencePipelineBuilder<TResult> builder, FallbackStrategyOptions<TResult> options)
{
Guard.NotNull(builder, "builder");
Guard.NotNull(options, "options");
return builder.AddStrategy((StrategyBuilderContext context) => FallbackResiliencePipelineBuilderExtensions.CreateFallback<TResult>(context, options), options);
}
private static ResilienceStrategy<TResult> CreateFallback<[System.Runtime.CompilerServices.Nullable(2)] TResult>(StrategyBuilderContext context, FallbackStrategyOptions<TResult> options)
{
return new FallbackResilienceStrategy<TResult>(new FallbackHandler<TResult>(options.ShouldHandle, options.FallbackAction), options.OnFallback, context.Telemetry);
}
}
}