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

package compare

import (
	"bytes"
	"fmt"

	"github.com/pmezard/go-difflib/difflib"

	"istio.io/istio/pkg/util/protomarshal"
)

// ClusterDiff prints a diff between Istiod and Envoy clusters to the passed writer
func (c *Comparator) ClusterDiff() error {
	envoyBytes, istiodBytes := &bytes.Buffer{}, &bytes.Buffer{}

	"fmt"
	"sort"
	"strings"
	"text/tabwriter"

	cluster "github.com/envoyproxy/go-control-plane/envoy/config/cluster/v3"
	"sigs.k8s.io/yaml"

	"istio.io/istio/istioctl/pkg/util/proto"
	"istio.io/istio/pilot/pkg/model"
	v3 "istio.io/istio/pilot/pkg/xds/v3"
	"istio.io/istio/pkg/config/host"
)

// ClusterFilter is used to pass filter information into cluster based config writer print functions
type ClusterFilter struct {

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

package multicluster

import (
	"context"

	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/apimachinery/pkg/types"
	"k8s.io/client-go/kubernetes"
)

// Use UUID of kube-system Namespace as unique identifier for cluster.
// (see https://docs.google.com/document/d/1F__vEKeI41P7PPUCMM9PVPYY34pyrvQI5rbTJVnS5c4)

package configdump

import (
	"sort"

	admin "github.com/envoyproxy/go-control-plane/envoy/admin/v3"
	cluster "github.com/envoyproxy/go-control-plane/envoy/config/cluster/v3"

	v3 "istio.io/istio/pilot/pkg/xds/v3"
)

// GetDynamicClusterDump retrieves a cluster dump with just dynamic active clusters in it
func (w *Wrapper) GetDynamicClusterDump(stripVersions bool) (*admin.ClustersConfigDump, error) {