k8s

Documentation

Overview

Package k8s abstracts all Kubernetes specific behaviour

Index

• Variables
• func WaitForNodeInformation(ctx context.Context, log logrus.FieldLogger, localNode LocalNodeResource, ...) error
• type LocalCiliumNodeResource
• type LocalNodeResource
• type LocalNodeResources
• type LocalPodResource
• type Resources

Variables

var (
	// ResourcesCell provides a set of handles to Kubernetes resources used throughout the
	// agent. Each of the resources share a client-go informer and backing store so we only
	// have one watch API call for each resource kind and that we maintain only one copy of each object.
	//
	// See pkg/k8s/resource/resource.go for documentation on the Resource[T] type.
	ResourcesCell = cell.Module(
		"k8s-resources",
		"Agent Kubernetes resources",

		cell.Config(k8s.DefaultConfig),
		LocalNodeCell,
		cell.Provide(
			k8s.ServiceResource,
			k8s.EndpointsResource,
			k8s.NamespaceResource,
			k8s.NetworkPolicyResource,
			k8s.CiliumNetworkPolicyResource,
			k8s.CiliumClusterwideNetworkPolicyResource,
			k8s.CiliumCIDRGroupResource,
			k8s.CiliumNodeResource,
			k8s.CiliumSlimEndpointResource,
			k8s.CiliumEndpointSliceResource,
		),
	)

	LocalNodeCell = cell.Module(
		"k8s-local-node-resources",
		"Agent Kubernetes local node resources",

		cell.Provide(
			func(lc cell.Lifecycle, cs client.Clientset) (LocalNodeResource, error) {
				return k8s.NodeResource(
					lc, cs,
					func(opts *metav1.ListOptions) {
						opts.FieldSelector = fields.ParseSelectorOrDie("metadata.name=" + nodeTypes.GetName()).String()
					},
				)
			},
			func(lc cell.Lifecycle, cs client.Clientset) (LocalCiliumNodeResource, error) {
				return k8s.CiliumNodeResource(
					lc, cs,
					func(opts *metav1.ListOptions) {
						opts.FieldSelector = fields.ParseSelectorOrDie("metadata.name=" + nodeTypes.GetName()).String()
					},
				)
			},
			func(lc cell.Lifecycle, cs client.Clientset) (LocalPodResource, error) {
				return k8s.PodResource(
					lc, cs,
					func(opts *metav1.ListOptions) {
						opts.FieldSelector = fields.ParseSelectorOrDie("spec.nodeName=" + nodeTypes.GetName()).String()
					},
				)
			},
		),
	)
)

Functions

func WaitForNodeInformation

func WaitForNodeInformation(ctx context.Context, log logrus.FieldLogger, localNode LocalNodeResource, localCiliumNode LocalCiliumNodeResource) error

WaitForNodeInformation retrieves the node information via the CiliumNode or Kubernetes Node resource. This function will block until the information is received.

Types

type LocalCiliumNodeResource

type LocalCiliumNodeResource resource.Resource[*cilium_api_v2.CiliumNode]

LocalCiliumNodeResource is a resource.Resource[*cilium_api_v2.CiliumNode] but one which will only stream updates for the CiliumNode object associated with the node we are currently running on.

type LocalNodeResource

type LocalNodeResource resource.Resource[*slim_corev1.Node]

LocalNodeResource is a resource.Resource[*slim_corev1.Node] but one which will only stream updates for the node object associated with the node we are currently running on.

type LocalNodeResources

type LocalNodeResources struct {
	cell.In

	LocalNode       LocalNodeResource
	LocalCiliumNode LocalCiliumNodeResource
}

LocalNodeResources is a convenience struct to group CiliumNode and Node resources as cell constructor parameters.

type LocalPodResource

type LocalPodResource resource.Resource[*slim_corev1.Pod]

LocalPodResource is a resource.Resource[*slim_corev1.Pod] but one which will only stream updates for pod objects scheduled on the node we are currently running on.

type Resources

type Resources struct {
	cell.In

	Services                         resource.Resource[*slim_corev1.Service]
	Endpoints                        resource.Resource[*k8s.Endpoints]
	LocalNode                        LocalNodeResource
	LocalCiliumNode                  LocalCiliumNodeResource
	LocalPods                        LocalPodResource
	Namespaces                       resource.Resource[*slim_corev1.Namespace]
	NetworkPolicies                  resource.Resource[*slim_networkingv1.NetworkPolicy]
	CiliumNetworkPolicies            resource.Resource[*cilium_api_v2.CiliumNetworkPolicy]
	CiliumClusterwideNetworkPolicies resource.Resource[*cilium_api_v2.CiliumClusterwideNetworkPolicy]
	CiliumCIDRGroups                 resource.Resource[*cilium_api_v2alpha1.CiliumCIDRGroup]
	CiliumSlimEndpoint               resource.Resource[*types.CiliumEndpoint]
	CiliumEndpointSlice              resource.Resource[*cilium_api_v2alpha1.CiliumEndpointSlice]
}

Resources is a convenience struct to group all the agent k8s resources as cell constructor parameters.