"context"
	"fmt"
	"io"
	"os"

	"github.com/spf13/cobra"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"

	"istio.io/istio/istioctl/pkg/cli"
	"istio.io/istio/istioctl/pkg/completion"
	"istio.io/istio/istioctl/pkg/util"
	"istio.io/istio/istioctl/pkg/util/configdump"
	"istio.io/istio/pkg/kube"
	"istio.io/istio/pkg/log"
)

var configDumpFile string

func checkCmd(ctx cli.Context) *cobra.Command {
	cmd := &cobra.Command{

	promv1 "github.com/prometheus/client_golang/api/prometheus/v1"
	prometheus_model "github.com/prometheus/common/model"
	corev1 "k8s.io/api/core/v1"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"

	"istio.io/istio/istioctl/pkg/cli"
	"istio.io/istio/istioctl/pkg/util/testutil"
)

// mockPromAPI lets us mock calls to Prometheus API
type mockPromAPI struct {
	cannedResponse map[string]prometheus_model.Value
}

	"testing"

	"github.com/spf13/cobra"
	"k8s.io/cli-runtime/pkg/resource"
	"k8s.io/client-go/rest/fake"
	cmdtesting "k8s.io/kubectl/pkg/cmd/testing"
	cmdutil "k8s.io/kubectl/pkg/cmd/util"

	"istio.io/istio/istioctl/pkg/cli"
	"istio.io/istio/pkg/kube"
)

type execTestCase struct {
	execClientConfig map[string][]byte
	args             []string

	// Typically use one of the three
	expectedOutput string // Expected constant output

package cli

import (
	"net/http"

	"k8s.io/cli-runtime/pkg/resource"
	"k8s.io/client-go/rest/fake"
	cmdtesting "k8s.io/kubectl/pkg/cmd/testing"
	"k8s.io/kubectl/pkg/cmd/util"

	"istio.io/istio/pkg/kube"
)

func init() {
	MakeKubeFactory = func(k kube.CLIClient) util.Factory {
		tf := cmdtesting.NewTestFactory()
		_, _, codec := cmdtesting.NewExternalScheme()
		tf.UnstructuredClient = &fake.RESTClient{

Istio currently supports both SotW and Delta protocol. However, the delta implementation is not yet optimized well, so it performs mostly the same as SotW.

## Controllers

Istiod consists of a collection of controllers. Per Kubernetes, "controllers are control loops that watch the state of your cluster, then make or request changes where needed."

	rbactcp "github.com/envoyproxy/go-control-plane/envoy/extensions/filters/network/rbac/v3"
	"google.golang.org/protobuf/proto"

	"istio.io/istio/pkg/log"
	"istio.io/istio/pkg/wellknown"
)

const (
	anonymousName = "_anonymous_match_nothing_"
)

// Matches the policy name in RBAC filter config with format like ns[default]-policy[some-policy]-rule[1].

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

package configdump

import (
	"bytes"
	"os"
	"testing"

	"istio.io/istio/pilot/test/util"
	"istio.io/istio/pkg/test/util/assert"
)

func TestConfigWriter_Prime(t *testing.T) {
	tests := []struct {
		name        string
		wantConfigs int
		inputFile   string
		wantErr     bool
	}{
		{

               "datasource": {
                  "type": "prometheus",
                  "uid": "$datasource"
               },
               "expr": "sum by (pod) (container_memory_working_set_bytes{container=\"istio-proxy\",pod=~\"ztunnel-.*\"})",
               "legendFormat": "Container ({{pod}})"
            }
         ],
         "title": "Memory Usage",
         "type": "timeseries"
      },
      {

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

package monitoring

import (
	"fmt"
	"net"
	"net/http"

	"istio.io/istio/pkg/log"
	"istio.io/istio/pkg/monitoring"
	"istio.io/istio/pkg/network"
)

func SetupMonitoring(port int, path string, stop <-chan struct{}) {
	if port <= 0 {
		return
	}
	mux := http.NewServeMux()
	var listener net.Listener

	corev1 "k8s.io/api/core/v1"
	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
	"k8s.io/apimachinery/pkg/runtime"

	"istio.io/api/annotation"
	"istio.io/api/label"
	"istio.io/istio/pkg/config/constants"
	"istio.io/istio/pkg/kube"
	"istio.io/istio/pkg/test/util/assert"
)

const (
	testPodName          = "testPod"
	testNSName           = "testNS"
	testSandboxDirectory = "/tmp"