CEL & CAPI WatchFilter

main.go

package main

import (
	"log"

	"github.com/google/cel-go/cel"
)

func main() {
	env, err := cel.NewEnv(
		cel.Variable("watchFilter", cel.StringType),
		cel.Variable("label", cel.StringType),
	)
	if err != nil {
		log.Fatalf("creating cel env: %s", err)
	}

	ast, issues := env.Compile(`watchFilter != label`)
	if issues != nil && issues.Err() != nil {
		log.Fatalf("type-check error: %s", issues.Err())
	}
	prg, err := env.Program(ast)
	if err != nil {
		log.Fatalf("program construction error: %s", err)
	}

	watchFilter := "test1"

	out, details, err := prg.Eval(map[string]interface{}{
		"watchFilter": watchFilter,
		"label":       "abcdef",
	})
	if err != nil {
		log.Fatalf("evaluating program error: %s", err)
	}
	println(out)
	println(details)

	out, details, err = prg.Eval(map[string]interface{}{
		"watchFilter": watchFilter,
		"label":       "test1",
	})
	if err != nil {
		log.Fatalf("evaluating program error: %s", err)
	}
	println(out)
	println(details)
}