type configFactory struct {
	ctx      resource.Context
	clusters []cluster.Cluster
	prefix   string
}

func newConfigFactory(ctx resource.Context, clusters cluster.Clusters) config.Factory {
	if len(clusters) == 0 {
		clusters = ctx.Clusters()
	}
	return &configFactory{
		ctx:      ctx,
		clusters: clusters,
	}
}

// GlobalYAMLWrites records how many YAMLs we have applied from all sources.

type Environment interface {
	Resource

	EnvironmentName() string

	// Clusters in this Environment. There will always be at least one.
	Clusters() cluster.Clusters

	// AllClusters in this Environment, including external control planes.
	AllClusters() cluster.Clusters
	IsMultiCluster() bool
	IsMultiNetwork() bool

		// upstream cluster will use HTTP 1.1, if incoming traffic use HTTP2,
		// the upstream cluster will use HTTP2.
		cb.setUseDownstreamProtocol(cluster)
	}
}

// normalizeClusters normalizes clusters to avoid duplicate clusters. This should be called
// at the end before adding the cluster to list of clusters.
func (cb *ClusterBuilder) normalizeClusters(clusters []*discovery.Resource) []*discovery.Resource {

)

// ApplyClusterMerge processes the MERGE operation and merges the supplied configuration to the matched clusters.
func ApplyClusterMerge(pctx networking.EnvoyFilter_PatchContext, efw *model.EnvoyFilterWrapper,
	c *cluster.Cluster, hosts []host.Name,
) (out *cluster.Cluster) {
	defer runtime.HandleCrash(runtime.LogPanic, func(any) {
		log.Errorf("clusters patch %s/%s caused panic, so the patches did not take effect", efw.Namespace, efw.Name)

		Run(func(t framework.TestContext) {
			if len(t.Clusters().Primaries()) == 0 {
				t.Skip("no primary cluster in framework (most likely only remote-config)")
			}

			// we don't need to test this per-cluster
			primary := t.Clusters().Primaries()[0]
			// it doesn't matter if the other cluster is a primary/remote/etc.
			remote := t.Clusters().Exclude(primary)[0]

			var (

// Clones small host constants in the graph to make it easier to form larger
// clusters.
//
// This helps us in two ways:
//
//  - It reduces dependencies between clusters.  Let's say a constant C is used
//    by nodes X and Y.  If X and Y are put in different clusters (for whatever
//    reason) Y's cluster now has to wait for all the operations in X's cluster
//    to finish before it starts running.
//

    int32 count = 2;
  }

  // Describes a single XLA cluster.
  //
  // Next ID: 4
  message Cluster {
    string name = 1;

    // The number of nodes in the cluster.
    int32 size = 2;

    // A histogram of the TF operations in this cluster.
    repeated OpAndCount op_histogram = 3;
  }

  // The number of nodes in the graph that are not inside an XLA cluster.
  int32 unclustered_node_count = 1;

		poolIDL, setIDL)
)

func b2f(v bool) float64 {
	if v {
		return 1
	}
	return 0
}

// loadClusterErasureSetMetrics - `MetricsLoaderFn` for cluster storage erasure
// set metrics.
func loadClusterErasureSetMetrics(ctx context.Context, m MetricValues, c *metricsCache) error {
	result, _ := c.esetHealthResult.Get()

  // Returns true if the devices in `cluster_a` and `cluster_b` are compatible
  // and therefore not a hindrance for combining the two clusters into a larger
  // cluster.
  absl::StatusOr<bool> AreDevicesCompatible(const Cluster& cluster_a,
                                            const Cluster& cluster_b);

  void DumpPostClusteringGraphs();
  void VLogClusteringSummary();

Xiaopeng Han <******@****.***> 1686841337 +0800