Kind:        "Config",
		APIVersion:  "v1",
		Preferences: api.Preferences{},
		Clusters: map[string]*api.Cluster{
			clusterName: newCluster(&c.restConfig),
		},
		AuthInfos: map[string]*api.AuthInfo{
			authInfoName: newAuthInfo(&c.restConfig),
		},
		Contexts: map[string]*api.Context{
			contextName: {
				Cluster:  clusterName,
				AuthInfo: authInfoName,
			},
		},
		CurrentContext: contextName,
	}

	"istio.io/istio/pilot/pkg/features"
	"istio.io/istio/pkg/cluster"
	"istio.io/istio/pkg/config/mesh"
	"istio.io/istio/pkg/kube"
	"istio.io/istio/pkg/kube/kclient"
	filter "istio.io/istio/pkg/kube/namespace"
	"istio.io/istio/pkg/log"
)

// Cluster defines cluster struct
type Cluster struct {
	// ID of the cluster.
	ID cluster.ID
	// Client for accessing the cluster.
	Client kube.Client

	kubeConfigSha [sha256.Size]byte

	}

	if i.cfg.DeployIstio {
		errG := multierror.Group{}
		// Make sure to clean up primary clusters before remotes, or istiod will recreate some of the CMs that we delete
		// in the remote clusters before it's deleted.
		for _, c := range i.ctx.AllClusters().Primaries() {
			i.cleanupCluster(c, &errG)
		}
		for _, c := range i.ctx.Clusters().Remotes() {
			i.cleanupCluster(c, &errG)
		}
		return errG.Wait().ErrorOrNil()
	}

  auto clusters = GetClusters(*graph);
  EXPECT_EQ(4, clusters.size());
  EXPECT_EQ(clusters["B"], clusters["C"]);
  EXPECT_EQ(clusters["E"], clusters["F"]);
  EXPECT_NE(clusters["B"], clusters["E"]);
  EXPECT_TRUE(clusters.find("A") == clusters.cend());
  EXPECT_TRUE(clusters.find("D") == clusters.cend());
}

TEST(XlaCompilationTest, UncompilableCycles) {

		{
			name: "one-kv",
			in:   "/inject/cluster/cluster1",
			want: map[string]string{"ISTIO_META_CLUSTER_ID": "cluster1"},
		},
		{
			name: "two-kv",
			in:   "/inject/cluster/cluster1/net/network1/",
			want: map[string]string{"ISTIO_META_CLUSTER_ID": "cluster1", "ISTIO_META_NETWORK": "network1"},
		},
		{
			name: "kv-with-slashes",
			in:   "/inject/cluster/cluster--slash--1/net/network--slash--1",

NAME       CLUSTER      CDS       LDS        EDS        RDS          ECDS         ISTIOD      VERSION
proxy1     cluster1     STALE     SYNCED     SYNCED     NOT SENT     NOT SENT     istiod1     1.20

	return f.ConfigGen.BuildListeners(p, f.PushContext())
}

func (f *ConfigGenTest) Clusters(p *model.Proxy) []*cluster.Cluster {
	raw, _ := f.ConfigGen.BuildClusters(p, &model.PushRequest{Push: f.PushContext()})
	res := make([]*cluster.Cluster, 0, len(raw))
	for _, r := range raw {
		c := &cluster.Cluster{}
		if err := r.Resource.UnmarshalTo(c); err != nil {
			f.t.Fatal(err)
		}
		res = append(res, c)
	}

func FetchInitConfigurationFromCluster(client clientset.Interface, printer output.Printer, logPrefix string, newControlPlane, skipComponentConfigs bool) (*kubeadmapi.InitConfiguration, error) {
	if printer == nil {
		printer = &output.TextPrinter{}
	}
	printer.Printf("[%s] Reading configuration from the cluster...\n", logPrefix)

	PrimaryName() string

	// Config returns the config cluster for this cluster. Will return itself if
	// IsConfig.
	Config() Cluster

	// ConfigName returns the name of the config cluster for this cluster.
	ConfigName() string

	// HTTPProxy returns the HTTP proxy config to connect to the cluster
	HTTPProxy() string

	// Metadata returns the value for a given metadata key for the cluster.

func (p clusterPatcher) conditionallyAppend(l []*cluster.Cluster, hosts []host.Name, clusters ...*cluster.Cluster) []*cluster.Cluster {
	if !p.hasPatches() {
		return append(l, clusters...)
	}
	for _, c := range clusters {
		if patched := p.doPatch(hosts, c); patched != nil {
			l = append(l, patched)
		}
	}
	return l
}

func (p clusterPatcher) insertedClusters() []*cluster.Cluster {