Add transformations to corresponding panels

[manfontan]

Description

Add transformations to the panels supporting them. Based on transformations

Since transformations are not supported by all panels I have added them for each of those actually supporting them rather than using __panel.

Test

Not sure how to test this. My assumption is that I should generate the spec.json from the spec.yml then assert the .libsonnet changes have been generated as expected. Any help with this will be very appreciated.

[manfontan]

Ok this seems to be actually broken. I will figured it out 😓

$ swagger-cli bundle -o _gen/7.0/spec.json specs/7.0/spec.yml 
Created _gen/7.0/spec.json from specs/7.0/spec.yml

$ go run . 7.0 jsonnet                                       
2021/04/14 00:10:57 json: cannot unmarshal string into Go struct field Schema.Components.Schemas.Properties.AllOf.Properties.Items.Properties of type main.Schema
exit status 1

[manfontan]

Ok looking better now

I can see the addTransformation method in the .libsonnet output for the different panels.

    addTransformation(
      transformation
    ):: self {}
      + { transformations+: [
        transformation
      ] },

[manfontan]

I tried creating a _transformation.yml and $ref it to avoid duplicated code in the panels but the result libsonnet was not what I expected. I probably need to review the generator code to fully understand how things are generated.

With the id and options properties it looks something like this:

    addTransformation(
      id=null,
      options=null,
    ):: self {}
      + { transformations+: [
        {
          [if id != null then 'id']: id,
          [if options != null then 'options']: options,
        },
      ] },

[manfontan]

Ok so my problem was that I was not fully dereferencing the spec.json.

$ swagger-cli bundle -r -o _gen/7.0/spec.json specs/7.0/spec.yml

$ go run . 7.0 jsonnet

With the above commands I got it working as expected.

In the latest commit I have added a _transformation.yml and reference it from the panels.

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