kube

Documentation

Index

• Constants
• func LoadConfig(kubeConfigPath string) (*rest.Config, error)
• type ContainerEventHandler
• type IPInfo
• type Metadata
  • func (k *Metadata) AddContainerEventHandler(eh ContainerEventHandler)
  • func (k *Metadata) AddPodEventHandler(h cache.ResourceEventHandler) error
  • func (k *Metadata) AddReplicaSetEventHandler(h cache.ResourceEventHandler) error
  • func (k *Metadata) AddServiceIPEventHandler(s cache.ResourceEventHandler) error
  • func (k *Metadata) FetchPodOwnerInfo(pod *PodInfo)
  • func (k *Metadata) GetContainerPod(containerID string) (*PodInfo, bool)
  • func (k *Metadata) GetInfo(ip string) (*IPInfo, *metav1.ObjectMeta, bool)
  • func (k *Metadata) GetReplicaSetInfo(namespace, name string) (*ReplicaSetInfo, bool)
  • func (k *Metadata) InitFromClient(ctx context.Context, client kubernetes.Interface, timeout time.Duration) error
• type MetadataProvider
  • func NewMetadataProvider(enable kubeflags.EnableFlag, disabledInformers []string, kubeConfigPath string, ...) *MetadataProvider
  • func (mp *MetadataProvider) ForceDisable()
  • func (mp *MetadataProvider) Get(ctx context.Context) (*Metadata, error)
  • func (mp *MetadataProvider) IsKubeEnabled() bool
  • func (mp *MetadataProvider) KubeClient() (kubernetes.Interface, error)
• type NodeInfo
• type Owner
  • func OwnerFrom(orefs []metav1.OwnerReference) *Owner
  • func (o *Owner) String() string
• type OwnerLabel
• type PodInfo
  • func (i *PodInfo) ServiceName() string
• type ReplicaSetInfo
• type ServiceInfo

Constants

const (
	IndexPodByContainerIDs = "idx_pod_by_container"
	IndexReplicaSetNames   = "idx_rs"
	IndexIP                = "idx_ip"
)

const (
	InformerService = maps.Bits(1 << iota)
	InformerReplicaSet
	InformerNode
)

const (
	OwnerReplicaSet  = OwnerLabel(attr.K8sReplicaSetName)
	OwnerDeployment  = OwnerLabel(attr.K8sDeploymentName)
	OwnerStatefulSet = OwnerLabel(attr.K8sStatefulSetName)
	OwnerDaemonSet   = OwnerLabel(attr.K8sDaemonSetName)
	OwnerUnknown     = OwnerLabel(attr.K8sUnknownOwnerName)
)

Functions

func LoadConfig

func LoadConfig(kubeConfigPath string) (*rest.Config, error)

Types

type ContainerEventHandler

type ContainerEventHandler interface {
	OnDeletion(containerID []string)
}

ContainerEventHandler listens for the deletion of containers, as triggered by a Pod deletion.

type IPInfo

type IPInfo struct {
	Kind     string
	Owner    Owner
	HostName string
	HostIP   string
	IPs      []string
}

IPInfo contains precollected metadata for Pods, Nodes and Services. Not all the fields are populated for all the above types. To save memory, we just keep in memory the necessary data for each Type. For more information about which fields are set for each type, please refer to the instantiation function of the respective informers.

type Metadata

type Metadata struct {
	// contains filtered or unexported fields
}

Metadata stores an in-memory copy of the different Kubernetes objects whose metadata is relevant to us.

func (*Metadata) AddContainerEventHandler

func (k *Metadata) AddContainerEventHandler(eh ContainerEventHandler)

func (*Metadata) AddPodEventHandler

func (k *Metadata) AddPodEventHandler(h cache.ResourceEventHandler) error

func (*Metadata) AddReplicaSetEventHandler

func (k *Metadata) AddReplicaSetEventHandler(h cache.ResourceEventHandler) error

func (*Metadata) AddServiceIPEventHandler

func (k *Metadata) AddServiceIPEventHandler(s cache.ResourceEventHandler) error

func (*Metadata) FetchPodOwnerInfo

func (k *Metadata) FetchPodOwnerInfo(pod *PodInfo)

FetchPodOwnerInfo updates the pod owner with the Deployment information, if it exists. Pod Info might include a ReplicaSet as owner, and ReplicaSet info usually has a Deployment as owner reference, which is the one that we'd really like to report as owner.

func (*Metadata) GetContainerPod

func (k *Metadata) GetContainerPod(containerID string) (*PodInfo, bool)

GetContainerPod fetches metadata from a Pod given the name of one of its containers

func (*Metadata) GetInfo

func (k *Metadata) GetInfo(ip string) (*IPInfo, *metav1.ObjectMeta, bool)

func (*Metadata) GetReplicaSetInfo

func (k *Metadata) GetReplicaSetInfo(namespace, name string) (*ReplicaSetInfo, bool)

GetReplicaSetInfo fetches metadata from a ReplicaSet given its name

func (*Metadata) InitFromClient

func (k *Metadata) InitFromClient(ctx context.Context, client kubernetes.Interface, timeout time.Duration) error

type MetadataProvider

type MetadataProvider struct {
	// contains filtered or unexported fields
}

func NewMetadataProvider

func NewMetadataProvider(
	enable kubeflags.EnableFlag,
	disabledInformers []string,
	kubeConfigPath string,
	syncTimeout time.Duration,
) *MetadataProvider

func (*MetadataProvider) ForceDisable

func (mp *MetadataProvider) ForceDisable()

func (*MetadataProvider) Get

func (mp *MetadataProvider) Get(ctx context.Context) (*Metadata, error)

func (*MetadataProvider) IsKubeEnabled

func (mp *MetadataProvider) IsKubeEnabled() bool

func (*MetadataProvider) KubeClient

func (mp *MetadataProvider) KubeClient() (kubernetes.Interface, error)

type NodeInfo

type NodeInfo struct {
	metav1.ObjectMeta
	IPInfo IPInfo
}

NodeInfo contains precollected metadata for nodes

type Owner

type Owner struct {
	Kind      string
	LabelName OwnerLabel
	Name      string
	// Owner of the owner. For example, a ReplicaSet might be owned by a Deployment
	Owner *Owner
}

func OwnerFrom

func OwnerFrom(orefs []metav1.OwnerReference) *Owner

OwnerFrom returns the most plausible Owner reference. It might be null if the entity does not have any owner

func (*Owner) String

func (o *Owner) String() string

type OwnerLabel

type OwnerLabel attr.Name

type PodInfo

type PodInfo struct {
	// Informers need that internal object is an ObjectMeta instance
	metav1.ObjectMeta
	NodeName string

	Owner *Owner

	// StartTimeStr caches value of ObjectMeta.StartTimestamp.String()
	StartTimeStr string
	ContainerIDs []string
	IPInfo       IPInfo
}

PodInfo contains precollected metadata for Pods.

func (*PodInfo) ServiceName

func (i *PodInfo) ServiceName() string

type ReplicaSetInfo

type ReplicaSetInfo struct {
	metav1.ObjectMeta
	Owner *Owner
}

ReplicaSetInfo contains precollected metadata for ReplicaSets

type ServiceInfo

type ServiceInfo struct {
	metav1.ObjectMeta
	IPInfo IPInfo
}

ServiceInfo contains precollected metadata for services.