Multiple transformations in a chain

[antonioberben]

Is your feature request related to a problem? Please describe. As a user I cannot define transformations in a chain which will be executed in the way I define.

i.e. Following VS specifies two transformations, to happen at the early stage. The first transformation is expected to be executed always and adds a header: x-first: true The second transformation is expected to be executed only if x-first: true exists and adds a another header: x-second: true Both will be executed under the same path prefix: / (for all the requests)

apiVersion: gateway.solo.io/v1
kind: VirtualService
metadata:
  name: demo
  namespace: gloo-system
spec:
[...]
    options:
      stagedTransformations:
        early:
          requestTransforms:
          - requestTransformation:
              transformationTemplate:
                parseBodyBehavior: DontParse
                headers:
                  x-second:
                    text: 'true'
            matcher:
              prefix: /
              headers:
                - name: "x-first"
                  value: "true"
    routes:
      - options:
          stagedTransformations:
            inheritTransformation: true
            early:
              requestTransforms:
                - requestTransformation:
                    transformationTemplate:
                      headers:
                        x-first:
                          text: 'true'
                  matcher:
                    prefix: /
        matchers:
          - prefix: /
        routeAction:
          single:
            upstream:
              name: default-httpbin-80
              namespace: gloo-system

So far, only one is executed. The second one is omitted.

Describe the solution you'd like Given the VS from above, I would be able to execute both transformations in a chain.

Describe alternatives you've considered An alternative is to define a mechanism like the Istio offers which allows you to explicitly decide where the filter will be injected. i.e.: operation: INSERT_BEFORE https://istio.io/latest/docs/reference/config/networking/envoy-filter/#EnvoyFilter-Patch-Operation

Thank you!

[murphye]

I believe this to be related/duplicate of: https://github.com/solo-io/gloo/issues/4063

[github-actions[bot]]

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