pe-crossplane-composition.yaml

apiVersion: apiextensions.crossplane.io/v1
kind: Composition
metadata:
  name: webapp
spec:
  compositeTypeRef:
    apiVersion: platform.example.org/v1alpha1
    kind: WebApp
  resources:
    - name: deployment
      base:
        apiVersion: apps/v1
        kind: Deployment
        spec:
          selector:
            matchLabels:
              app: webapp
          template:
            metadata:
              labels:
                app: webapp
            spec:
              containers:
                - name: app
                  image: nginx
                  ports:
                    - containerPort: 8080
      patches:
        - fromFieldPath: "spec.image"
          toFieldPath: "spec.template.spec.containers[0].image"
        - fromFieldPath: "spec.replicas"
          toFieldPath: "spec.replicas"

    - name: service
      base:
        apiVersion: v1
        kind: Service
        spec:
          selector:
            app: webapp
          ports:
            - port: 80
              targetPort: 8080

    - name: ingress
      base:
        apiVersion: networking.k8s.io/v1
        kind: Ingress
        spec:
          rules: []
      patches:
        - fromFieldPath: "spec.endpoints"
          toFieldPath: "spec.rules"
          transforms:
            - type: map
              map:
                host: "host"
                path: "path"