Small demo for running a distributed search.

To run this demo, copy Credentials/creds.json into your home directory, and insert appropriate settings...

This will change in the future, once the app components completely run in Docker and on Kubernetes.

Let's say we have the following domain data types:

type FashionQuery = 
    { Size: int
      FashionType: FashionType }

type FashionItem =
    { Size: int
      FashionType: FashionType
      Price: decimal 
      Description: string
      StockKeepingUnitID : string }

We want to create a filter predicate which only let's FashionItems pass which have the right size. This filter can be implemented like this:

public class SizeFilter : IBusinessLogicFilterPredicate<ProcessingContext, FashionItem>
{
    bool IBusinessLogicFilterPredicate<ProcessingContext, FashionItem>.Matches(ProcessingContext context, FashionItem item)
        => context.Query.Size == item.Size;
}

new GenericFilter<ProcessingContext, FashionItem>((c,i) => c.Query.Size == i.Size)

type SizeFilter() =
    interface IBusinessLogicFilterPredicate<ProcessingContext, FashionItem> with
        member this.Matches(ctx, item) = ctx.Query.Size = item.Size

• Discriminated unions get properly serialized in .NET, so I probably don't need this one https://gist.github.com/isaacabraham/ba679f285bfd15d2f53e