Pass a function as a parameter via catalog

[Anuj Kumar]

Hi,

Is it possible to add a function as a parameter to the catalog?

For example, I have a filter function where I need to pass an external function as a parameter that can be used within the function defined as :onyx/type :function.

Sample function-

(defn filter-word [ffn segment]

   (filter #(ffn (:count %)) (vector segment)))

where catalog has an entry-

{:onyx/name :odd

 :onyx/fn :play.onyx.play-wordcount/filter-word

 :onyx/type :function

 :parameterized.core/ffn odd?

 :onyx/params [:parameterized.core/ffn]

 :onyx/batch-size 10}

Thanks,

Anuj

[Mike Drogalis]

Hi Anuj,

Since jobs must be EDN serializable, you can't pass a function as a parameter to the catalog using :onyx/params. You can, however, use another technique for injecting parameters into a function as described here in the User Guide.

Essentially you want to write a lifecycle that adds the filter function as a parameter to your function. We have an example of this here in onyx-examples.

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[Anuj Kumar]

Thanks Mike. That helps.

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