metrics

type ContainerMetricsSnapshot struct {
	// ID identifies a specific container those metrics are coming from.
	ID model.ContainerID
	// End time of the measurement interval.
	SnapshotTime time.Time
	// Duration of the measurement interval, which is [SnapshotTime - SnapshotWindow, SnapshotTime].
	SnapshotWindow time.Duration
	// Actual usage of the resources over the measurement interval.
	Usage model.Resources
}

type ExternalClientOptions struct {
	ResourceMetrics map[k8sapiv1.ResourceName]string
	// Label to use for the container name.
	ContainerNameLabel string
}

type MetricsClient interface {
	// GetContainersMetrics returns an array of ContainerMetricsSnapshots,
	// representing resource usage for every running container in the cluster
	GetContainersMetrics() ([]*ContainerMetricsSnapshot, error)
}

type PodMetricsLister interface {
	List(ctx context.Context, namespace string, opts v1.ListOptions) (*v1beta1.PodMetricsList, error)
}