Feat: add gen-cue to Makefile (#6009)

Signed-off-by: iyear <ljyngup@gmail.com>

hack/cuegen/cuegen.sh

@@ -0,0 +1,40 @@
+#!/usr/bin/env bash
+
+set -e
+
+# Usage: cuegen.sh dir [flagsToVela]
+# Example: cuegen.sh references/cuegen/generators/provider/testdata/ \
+#           -t provider \
+#           --types *k8s.io/apimachinery/pkg/apis/meta/v1/unstructured.Unstructured=ellipsis
+
+
+# check vela binary
+if ! [ -x "$(command -v vela)" ]; then
+  echo "Please put vela binary in the PATH"
+  exit 1
+fi
+
+# get dir from first arg
+dir="$1"
+if [ -z "$dir" ]; then
+  echo "Please provide a directory"
+  exit 1
+fi
+
+echo "Generating CUE files from go files in $dir"
+echo "========"
+
+find "$dir" -name "*.go" | while read -r file; do
+  echo "- Generating CUE file for $file"
+
+  # redirect output if command exits successfully
+  (out=$(vela def gen-cue ${*:2} "$file") && echo "$out" > "${file%.go}".cue) &
+done
+
+echo "========"
+echo "Waiting for all background processes to finish"
+
+wait
+sleep 5s # wait for all stderr to be printed
+
+echo "Done"

makefiles/develop.mk

@@ -24,4 +24,9 @@ core-debug-run: fmt vet manifests
 # Run against the configured Kubernetes cluster in ~/.kube/config
 .PHONY: core-run
 core-run: fmt vet manifests
-	go run ./cmd/core/main.go
+	go run ./cmd/core/main.go
+
+## gen-cue: Generate CUE files from Go files. Variable DIR is the directory of the Go files, FLAGS is the flags for vela def gen-cue command.
+.PHONY: gen-cue
+gen-cue:
+	./hack/cuegen/cuegen.sh $(DIR) $(FLAGS)