metrics

package
Version: v1.24.0 Latest Latest
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Published: May 3, 2022 License: Apache-2.0 Imports: 14 Imported by: 115

Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func GetMetricUtilizationRatio added in v1.5.0

func GetMetricUtilizationRatio(metrics PodMetricsInfo, targetUtilization int64) (utilizationRatio float64, currentUtilization int64)

GetMetricUtilizationRatio takes in a set of metrics and a target utilization value, and calculates the ratio of desired to actual utilization (returning that and the actual utilization)

func GetResourceUtilizationRatio added in v1.5.0

func GetResourceUtilizationRatio(metrics PodMetricsInfo, requests map[string]int64, targetUtilization int32) (utilizationRatio float64, currentUtilization int32, rawAverageValue int64, err error)

GetResourceUtilizationRatio takes in a set of metrics, a set of matching requests, and a target utilization percentage, and calculates the ratio of desired to actual utilization (returning that, the actual utilization, and the raw average value)

Types

type MetricsClient

type MetricsClient interface {
	// GetResourceMetric gets the given resource metric (and an associated oldest timestamp)
	// for the specified named container in all pods matching the specified selector in the given namespace and when
	// the container is an empty string it returns the sum of all the container metrics.
	GetResourceMetric(ctx context.Context, resource v1.ResourceName, namespace string, selector labels.Selector, container string) (PodMetricsInfo, time.Time, error)

	// GetRawMetric gets the given metric (and an associated oldest timestamp)
	// for all pods matching the specified selector in the given namespace
	GetRawMetric(metricName string, namespace string, selector labels.Selector, metricSelector labels.Selector) (PodMetricsInfo, time.Time, error)

	// GetObjectMetric gets the given metric (and an associated timestamp) for the given
	// object in the given namespace
	GetObjectMetric(metricName string, namespace string, objectRef *autoscaling.CrossVersionObjectReference, metricSelector labels.Selector) (int64, time.Time, error)

	// GetExternalMetric gets all the values of a given external metric
	// that match the specified selector.
	GetExternalMetric(metricName string, namespace string, selector labels.Selector) ([]int64, time.Time, error)
}

MetricsClient knows how to query a remote interface to retrieve container-level resource metrics as well as pod-level arbitrary metrics

func NewRESTMetricsClient added in v1.6.0

func NewRESTMetricsClient(resourceClient resourceclient.PodMetricsesGetter, customClient customclient.CustomMetricsClient, externalClient externalclient.ExternalMetricsClient) MetricsClient

type PodMetric added in v1.12.0

type PodMetric struct {
	Timestamp time.Time
	Window    time.Duration
	Value     int64
}

PodMetric contains pod metric value (the metric values are expected to be the metric as a milli-value)

type PodMetricsInfo added in v1.5.0

type PodMetricsInfo map[string]PodMetric

PodMetricsInfo contains pod metrics as a map from pod names to PodMetricsInfo

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