"istio.io/istio/pkg/test/framework/components/cluster/kube"
	"istio.io/istio/pkg/test/framework/config"
	"istio.io/istio/pkg/test/framework/resource"
	"istio.io/istio/pkg/test/scopes"
)

// Environment is the implementation of a kubernetes environment. It implements environment.Environment,
// and also hosts publicly accessible methods that are specific to cluster environment.
type Environment struct {
	id       resource.ID

// The same response can also be used by other apps using XDS directly.

// GRPC proposal:
// https://github.com/grpc/proposal/blob/master/A27-xds-global-load-balancing.md
//
// Note that this implementation is tested against gRPC, but it is generic - any other framework can
// use this XDS mode to get load balancing info from Istio, including MC/VM/etc.

type CertUtil interface {
	// GetWaitTime returns the waiting time before renewing the certificate.
	GetWaitTime([]byte, time.Time) (time.Duration, error)
}

// CertUtilImpl is the implementation of CertUtil, for production use.
type CertUtilImpl struct {
	gracePeriodPercentage int
}

// NewCertUtil returns a new CertUtilImpl
func NewCertUtil(gracePeriodPercentage int) CertUtilImpl {
	return CertUtilImpl{

type ClientBuilder = func(kubeConfig []byte, clusterId cluster.ID, configOverrides ...func(*rest.Config)) (kube.Client, error)

// Controller is the controller implementation for Secret resources
type Controller struct {
	namespace            string
	configClusterID      cluster.ID
	configCluster        *Cluster
	configClusterSyncers []ComponentConstraint

	ClientBuilder ClientBuilder

messages:
  - name: "InternalError"
    code: IST0001
    level: Error
    description: "There was an internal error in the toolchain. This is almost always a bug in the implementation."
    template: "Internal error: %v"
    args:
      - name: detail
        type: string

  - name: "Deprecated"
    code: IST0002
    level: Warning

// See the License for the specific language governing permissions and
// limitations under the License.

// Provides utility methods to generate X.509 certificates with different
// options. This implementation is Largely inspired from
// https://golang.org/src/crypto/tls/generate_cert.go.

package util

import (
	"crypto"
	"crypto/ecdsa"
	"crypto/rsa"
	"crypto/tls"
	"crypto/x509"
	"errors"
	"fmt"

	// queryable and should be preserved when modifying objects.
	Annotations map[string]string `json:"annotations,omitempty"`

	// ResourceVersion is an opaque identifier for tracking updates to the config registry.
	// The implementation may use a change index or a commit log for the revision.
	// The config client should not make any assumptions about revisions and rely only on
	// exact equality to implement optimistic concurrency of read-write operations.
	//

// See the License for the specific language governing permissions and
// limitations under the License.

// Provides utility methods to generate X.509 certificates with different
// options. This implementation is Largely inspired from
// https://golang.org/src/crypto/tls/generate_cert.go.

package util

import (
	"crypto"
	"crypto/ecdsa"
	"crypto/ed25519"
	"crypto/elliptic"
	"crypto/rand"
	"crypto/rsa"

			return nil, fmt.Errorf("unable to listen on socket: %v", err)
		}
	}

	// NOTE: this is a temporary solution to provide bare-bones debug functionality
	// for pilot. a full design / implementation of self-monitoring and reporting
	// is coming. that design will include proper coverage of statusz/healthz type
	// functionality, in addition to how pilot reports its own metrics.
	if err := addMonitor(mux); err != nil {

// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

// An example implementation of a CSR Controller.
package csrctrl

import (
	"fmt"
	"strings"
	"time"

	certv1 "k8s.io/api/certificates/v1"
	"k8s.io/apimachinery/pkg/types"

	"istio.io/istio/pkg/kube"