69 lines
1.5 KiB
Go
69 lines
1.5 KiB
Go
package resource
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import (
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"github.com/derailed/k9s/internal/k8s"
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v1 "k8s.io/api/core/v1"
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)
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type (
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// ClusterIfc represents a cluster.
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ClusterIfc interface {
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Version() (string, error)
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ContextName() string
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ClusterName() string
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UserName() string
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}
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// MetricsIfc represents a metrics server.
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MetricsIfc interface {
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NodeMetrics() (k8s.Metric, error)
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PerNodeMetrics([]v1.Node) (map[string]k8s.Metric, error)
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PodMetrics() (map[string]k8s.Metric, error)
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}
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// Cluster represents a kubernetes resource.
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Cluster struct {
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api ClusterIfc
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mx MetricsIfc
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}
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)
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// NewCluster returns a new cluster info resource.
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func NewCluster() *Cluster {
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return NewClusterWithArgs(k8s.NewCluster(), k8s.NewMetricsServer())
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}
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// NewClusterWithArgs for tests only!
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func NewClusterWithArgs(ci ClusterIfc, mx MetricsIfc) *Cluster {
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return &Cluster{api: ci, mx: mx}
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}
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// Version returns the current K8s cluster version.
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func (c *Cluster) Version() string {
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info, err := c.api.Version()
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if err != nil {
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return "n/a"
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}
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return info
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}
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// ContextName returns the context name.
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func (c *Cluster) ContextName() string {
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return c.api.ContextName()
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}
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// ClusterName returns the cluster name.
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func (c *Cluster) ClusterName() string {
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return c.api.ClusterName()
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}
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// UserName returns the user name.
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func (c *Cluster) UserName() string {
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return c.api.UserName()
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}
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// Metrics gathers node level metrics and compute utilization percentages.
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func (c *Cluster) Metrics() (k8s.Metric, error) {
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return c.mx.NodeMetrics()
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}
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