Using it together with function-extra-resources

[shubhamoli]

Hi Team,

Thanks a lot for providing this Crossplane function for Cue. We're using it for authoring our Compositions and XRDs and we have a use case where we need inputs from other resources which are created by other compositions.

function-extra-resources provides this capability and we wanted to ask if function-cue supports it or not? We tried adding function-extra-resources in our function pipeline but function-cue is not able to see those fields (see into: XProject).

Ex.

pipeline: [
			{
				step: "load required resource(s)"
				functionRef: name: "crossplane-contrib-function-extra-resources"
                                 input: 
                                    apiVersion: extra-resources.fn.crossplane.io/v1beta1
                                    kind: Input
                                    spec:
                                      extraResources:
                                        - kind: XProject
                                           into: XProject      // How to read this in the function-cue
                                           apiVersion: example.crossplane.io/v1
                                           type: Selector
                                           selector:
                                             maxMatch: 2
                                             minMatch: 1
                                             matchLabels:
                                             - key: type
                                                type: Value
                                                value: GCPProject
			},
			{
				step: "run cue composition"
				functionRef: name: "crossplane-contrib-function-cue"
				input: {
					apiVersion: "function-cue/v1"  // value does not matter
					kind:       "CueFunctionInput" // ditto
					source:     "Inline"
					script:     scripts.simpleprivatenetwork
					debugNew:   true
				}
			},

[gotwarlost]

so, function-cue exposes the extra resources based on the fact that is exposes the entire request object but doesn't provide a way to specify requirements to crossplane. This needs to be implemented. Would you be willing to do a PR for this?

[gotwarlost]

Sorry, I was wrong above. It doesn't expose ExtraResources because it clones the request and copies only the things that a function implementation might need (this code predates the addition of extra resources which should be exposed)

Should be a 1-line fix here to also copy extra resources

[shubhamoli]

Hi @gotwarlost Thanks for your response and pointing me to the right direction. Sure, let me give it a try.