Function Context support

[stevendborrelli]

Description of your changes

Adds support for writing to Context

apiVersion: meta.gotemplating.fn.crossplane.io/v1alpha1
kind: Context
  data:

Fixes #66

I have:

• Read and followed Crossplane's contribution process.
• Added or updated unit tests for my change.

Testing

Given the following template:

 ---
          apiVersion: meta.gotemplating.fn.crossplane.io/v1alpha1
          kind: Context
          data:
            "apiextensions.crossplane.io/environment":
               update: environment
               nestedEnvUpdate:
                 hello: world
            "other-context-key":
              complex: {{ index .context "apiextensions.crossplane.io/environment" "complex" | toYaml | nindent 6 }}
            newkey:
              hello: world
          ---
          apiVersion: example.crossplane.io/v1
          kind: XR
          status:
            fromEnv: {{ index .context "apiextensions.crossplane.io/environment" "complex" "c" "d" }} 

Render will output

---
apiVersion: example.crossplane.io/v1
kind: XR
metadata:
  name: example-xr
status:
  conditions:
  - lastTransitionTime: "2024-01-01T00:00:00Z"
    reason: Available
    status: "True"
    type: Ready
  fromEnv: e
---
apiVersion: render.crossplane.io/v1beta1
fields:
  apiextensions.crossplane.io/environment:
    apiVersion: internal.crossplane.io/v1alpha1
    complex:
      a: b
      c:
        d: e
        f: "1"
    kind: Environment
    nestedEnvUpdate:
      hello: world
    update: environment
  newkey:
    hello: world
  other-context-key:
    complex:
      a: b
      c:
        d: e
        f: "1"
kind: Context

[stevendborrelli]

@phisco can you take a look? For the merging I am using mergo right now

[phisco]

Awesome! Yes, I was thinking about mergo too, I'd say it looks pretty good, let me take it for a spin tomorrow!

Maybe I'd add some annotation to the context meta resource to allow replacing it instead of merging if needed.

[phisco]

opened stevendborrelli#1 with a few changes

[stevendborrelli]

@phisco merged your changes. All looks good.

[phisco]

sorry forgot to update the examples