gistfile1.txt

package main

import (
	"context"
	"fmt"

	"github.com/tsuru/rpaas-operator/pkg/apis"
	"github.com/tsuru/rpaas-operator/pkg/apis/extensions/v1alpha1"
	"k8s.io/apimachinery/pkg/runtime"
	"sigs.k8s.io/controller-runtime/pkg/client"
	"sigs.k8s.io/controller-runtime/pkg/client/config"
	"sigs.k8s.io/controller-runtime/pkg/manager"
	"sigs.k8s.io/controller-runtime/pkg/runtime/signals"
)

func setup() (client.Client, error) {
	cfg, err := config.GetConfig()
	if err != nil {
		return nil, err
	}
	m, err := manager.New(cfg, manager.Options{})
	if err != nil {
		return nil, err
	}
	cli := m.GetClient()
	err = apis.AddToScheme(m.GetScheme())
	if err != nil {
		return nil, err
	}
	err = m.GetFieldIndexer().IndexField(&v1alpha1.RpaasInstance{}, "metadata.name", func(o runtime.Object) []string {
		return []string{o.(*v1alpha1.RpaasInstance).Name}
	})
	if err != nil {
		return nil, err
	}
	go m.Start(signals.SetupSignalHandler())
	return cli, nil
}

func main() {
	cli, err := setup()
	if err != nil {
		panic(err)
	}
	list := &v1alpha1.RpaasInstanceList{}
	err = cli.List(context.Background(), client.MatchingField("metadata.name", "myinstance-created-from-tsuru"), list)
	if err != nil {
		panic(err)
	}
	fmt.Printf("list: %#v\n", list)
}