Conditional pipeline processors

[niemyjski]

I wish there was a way to do some very basic conditional pipeline actions without going straight to scripts. For example, run this pipeline only if this field exists. I don't want to have to specify a failure action when a field doesn't exist....

            var response = await Configuration.Client.PutPipelineAsync(Pipeline, d => d
                .Processors(p => p
                    .Lowercase<Employee>(l => l.Field(f => f.Name))
                    .Trim<Employee>(t => t.Field(f => f.Name))
                ).OnFailure(of => of.Set<Employee>(s => s.Field(f => f.Name).Value(String.Empty))));

[clintongormley]

@niemyjski have you seen the ignore_missing parameter? https://www.elastic.co/guide/en/elasticsearch/reference/current/lowercase-processor.html

[niemyjski]

I didn't see that, and will take a look into it, but it still would be super nice to be able to some basic stuff like maybe check if a value was specified and if it doesn't specify defaults or run different processors on the field.

[elasticmachine]

Pinging @elastic/es-core-infra

[nicholasyin]

Why wasn't this property added to every type of processor?