k8s

package
v0.11.1 Latest Latest
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 Go to latest Published: Oct 20, 2021 License: Apache-2.0 Imports: 42 Imported by: 2

Documentation

Overview

Package k8s is a generated GoMock package.

Package k8s implements the Kubernetes Controller interface to monitor and retrieve information regarding Kubernetes resources such as Namespaces, Services, Pods, Endpoints, and ServiceAccounts.

Index

Constants

View Source 
const (
	// DefaultKubeEventResyncInterval is the default resync interval for k8s events
	// This is set to 0 because we do not need resyncs from k8s client, and have our
	// own Ticker to turn on periodic resyncs.
	DefaultKubeEventResyncInterval = 0 * time.Second
)

Variables

This section is empty.

Functions

func DialerToPod 

func DialerToPod(conf *rest.Config, clientSet kubernetes.Interface, podName string, namespace string) (httpstream.Dialer, error)

DialerToPod constructs a new httpstream.Dialer to connect to a pod for use with a PortForwarder

func GetAppProtocolFromPortName 

func GetAppProtocolFromPortName(portName string) string

GetAppProtocolFromPortName returns the port's application protocol from its name, defaults to 'http' if not specified.

func GetEventHandlerFuncs added in v0.11.1 

func GetEventHandlerFuncs(shouldObserve observeFilter, eventTypes EventTypes, msgBroker *messaging.Broker) cache.ResourceEventHandlerFuncs

GetEventHandlerFuncs returns the ResourceEventHandlerFuncs object used to receive events when a k8s object is added/updated/deleted.

func GetHostnamesForService 

func GetHostnamesForService(svc service.MeshService, localNamespace bool) []string

GetHostnamesForService returns the hostnames over which the service is accessible

func GetKubernetesServerVersionNumber 

func GetKubernetesServerVersionNumber(kubeClient kubernetes.Interface) ([]int, error)

GetKubernetesServerVersionNumber returns the Kubernetes server version number in chunks, ex. v1.19.3 => [1, 19, 3]

func GetOSMControllerPods added in v0.11.0 

func GetOSMControllerPods(clientSet kubernetes.Interface, ns string) *corev1.PodList

GetOSMControllerPods returns a list of osm-controller pods in the namespace

func GetOSMInjectorPods added in v0.11.0 

func GetOSMInjectorPods(clientSet kubernetes.Interface, ns string) *corev1.PodList

GetOSMInjectorPods returns a list of osm-injector pods in the namespace

func GetServiceFromHostname 

func GetServiceFromHostname(host string) string

GetServiceFromHostname returns the service name from its hostname

func NamespacedNameFrom 

func NamespacedNameFrom(name string) (types.NamespacedName, error)

NamespacedNameFrom returns the namespaced name for the given name if possible, otherwise an error

func WatchAndUpdateLogLevel added in v0.11.1 

func WatchAndUpdateLogLevel(msgBroker *messaging.Broker, stop <-chan struct{})

WatchAndUpdateLogLevel watches for log level changes and updates the global log level

func WatchAndUpdateProxyBootstrapSecret added in v0.11.1 

func WatchAndUpdateProxyBootstrapSecret(kubeClient kubernetes.Interface, msgBroker *messaging.Broker, stop <-chan struct{})

WatchAndUpdateProxyBootstrapSecret watches for new pods being added to the mesh and updates their corresponding proxy bootstrap secret's OwnerReference to point to the associated pod.

Types

type Controller 

type Controller interface {
	// ListServices returns a list of all (monitored-namespace filtered) services in the mesh
	ListServices() []*corev1.Service

	// ListServiceAccounts returns a list of all (monitored-namespace filtered) service accounts in the mesh
	ListServiceAccounts() []*corev1.ServiceAccount

	// GetService returns a corev1 Service representation if the MeshService exists in cache, otherwise nil
	GetService(svc service.MeshService) *corev1.Service

	// IsMonitoredNamespace returns whether a namespace with the given name is being monitored
	// by the mesh
	IsMonitoredNamespace(string) bool

	// ListMonitoredNamespaces returns the namespaces monitored by the mesh
	ListMonitoredNamespaces() ([]string, error)

	// GetNamespace returns k8s namespace present in cache
	GetNamespace(ns string) *corev1.Namespace

	// ListPods returns a list of pods part of the mesh
	ListPods() []*corev1.Pod

	// ListServiceIdentitiesForService lists ServiceAccounts associated with the given service
	ListServiceIdentitiesForService(service.MeshService) ([]identity.K8sServiceAccount, error)

	// GetEndpoints returns the endpoints for a given service, if found
	GetEndpoints(service.MeshService) (*corev1.Endpoints, error)

	// IsMetricsEnabled returns true if the pod in the mesh is correctly annotated for prometheus scrapping
	IsMetricsEnabled(*corev1.Pod) bool

	// UpdateStatus updates the status subresource for the given resource and GroupVersionKind
	// The object within the 'interface{}' must be a pointer to the underlying resource
	UpdateStatus(interface{}) (metav1.Object, error)

	// K8sServiceToMeshServices translates a k8s service with one or more ports to one or more
	// MeshService objects per port.
	K8sServiceToMeshServices(corev1.Service) []service.MeshService
}

Controller is the controller interface for K8s services

func NewKubernetesController 

func NewKubernetesController(kubeClient kubernetes.Interface, policyClient policyv1alpha1Client.Interface, meshName string,
	stop <-chan struct{}, msgBroker *messaging.Broker, selectInformers ...InformerKey) (Controller, error)

NewKubernetesController returns a new kubernetes.Controller which means to provide access to locally-cached k8s resources

type EventType 

type EventType string

EventType is the type of event we have received from Kubernetes 

const (
	// AddEvent is a type of a Kubernetes API event.
	AddEvent EventType = "ADD"

	// UpdateEvent is a type of a Kubernetes API event.
	UpdateEvent EventType = "UPDATE"

	// DeleteEvent is a type of a Kubernetes API event.
	DeleteEvent EventType = "DELETE"
)

func (EventType) String 

func (et EventType) String() string

type EventTypes 

type EventTypes struct {
	Add    announcements.Kind
	Update announcements.Kind
	Delete announcements.Kind
}

EventTypes is a struct helping pass the correct types to GetEventHandlerFuncs()

type FakeDiscoveryClient 

type FakeDiscoveryClient struct {
	discovery.ServerResourcesInterface
	Resources map[string]metav1.APIResourceList
	Err       error
}

FakeDiscoveryClient is a fake client for k8s API discovery

func (*FakeDiscoveryClient) ServerResourcesForGroupVersion 

func (f *FakeDiscoveryClient) ServerResourcesForGroupVersion(groupVersion string) (*metav1.APIResourceList, error)

ServerResourcesForGroupVersion returns the supported resources for a group and version.

type InformerKey 

type InformerKey string

InformerKey stores the different Informers we keep for K8s resources 

const (
	// Namespaces lookup identifier
	Namespaces InformerKey = "Namespaces"
	// Services lookup identifier
	Services InformerKey = "Services"
	// Pods lookup identifier
	Pods InformerKey = "Pods"
	// Endpoints lookup identifier
	Endpoints InformerKey = "Endpoints"
	// ServiceAccounts lookup identifier
	ServiceAccounts InformerKey = "ServiceAccounts"
)

type MockController 

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

MockController is a mock of Controller interface.

func NewMockController 

func NewMockController(ctrl *gomock.Controller) *MockController

NewMockController creates a new mock instance.

func (*MockController) EXPECT 

func (m *MockController) EXPECT() *MockControllerMockRecorder

EXPECT returns an object that allows the caller to indicate expected use.

func (*MockController) GetEndpoints 

func (m *MockController) GetEndpoints(arg0 service.MeshService) (*v1.Endpoints, error)

GetEndpoints mocks base method.

func (*MockController) GetNamespace 

func (m *MockController) GetNamespace(arg0 string) *v1.Namespace

GetNamespace mocks base method.

func (*MockController) GetService 

func (m *MockController) GetService(arg0 service.MeshService) *v1.Service

GetService mocks base method.

func (*MockController) IsMetricsEnabled 

func (m *MockController) IsMetricsEnabled(arg0 *v1.Pod) bool

IsMetricsEnabled mocks base method.

func (*MockController) IsMonitoredNamespace 

func (m *MockController) IsMonitoredNamespace(arg0 string) bool

IsMonitoredNamespace mocks base method.

func (*MockController) K8sServiceToMeshServices added in v0.11.0 

func (m *MockController) K8sServiceToMeshServices(arg0 v1.Service) []service.MeshService

K8sServiceToMeshServices mocks base method.

func (*MockController) ListMonitoredNamespaces 

func (m *MockController) ListMonitoredNamespaces() ([]string, error)

ListMonitoredNamespaces mocks base method.

func (*MockController) ListPods 

func (m *MockController) ListPods() []*v1.Pod

ListPods mocks base method.

func (*MockController) ListServiceAccounts 

func (m *MockController) ListServiceAccounts() []*v1.ServiceAccount

ListServiceAccounts mocks base method.

func (*MockController) ListServiceIdentitiesForService 

func (m *MockController) ListServiceIdentitiesForService(arg0 service.MeshService) ([]identity.K8sServiceAccount, error)

ListServiceIdentitiesForService mocks base method.

func (*MockController) ListServices 

func (m *MockController) ListServices() []*v1.Service

ListServices mocks base method.

func (*MockController) UpdateStatus 

func (m *MockController) UpdateStatus(arg0 interface{}) (v10.Object, error)

UpdateStatus mocks base method.

type MockControllerMockRecorder 

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

MockControllerMockRecorder is the mock recorder for MockController.

func (*MockControllerMockRecorder) GetEndpoints 

func (mr *MockControllerMockRecorder) GetEndpoints(arg0 interface{}) *gomock.Call

GetEndpoints indicates an expected call of GetEndpoints.

func (*MockControllerMockRecorder) GetNamespace 

func (mr *MockControllerMockRecorder) GetNamespace(arg0 interface{}) *gomock.Call

GetNamespace indicates an expected call of GetNamespace.

func (*MockControllerMockRecorder) GetService 

func (mr *MockControllerMockRecorder) GetService(arg0 interface{}) *gomock.Call

GetService indicates an expected call of GetService.

func (*MockControllerMockRecorder) IsMetricsEnabled 

func (mr *MockControllerMockRecorder) IsMetricsEnabled(arg0 interface{}) *gomock.Call

IsMetricsEnabled indicates an expected call of IsMetricsEnabled.

func (*MockControllerMockRecorder) IsMonitoredNamespace 

func (mr *MockControllerMockRecorder) IsMonitoredNamespace(arg0 interface{}) *gomock.Call

IsMonitoredNamespace indicates an expected call of IsMonitoredNamespace.

func (*MockControllerMockRecorder) K8sServiceToMeshServices added in v0.11.0 

func (mr *MockControllerMockRecorder) K8sServiceToMeshServices(arg0 interface{}) *gomock.Call

K8sServiceToMeshServices indicates an expected call of K8sServiceToMeshServices.

func (*MockControllerMockRecorder) ListMonitoredNamespaces 

func (mr *MockControllerMockRecorder) ListMonitoredNamespaces() *gomock.Call

ListMonitoredNamespaces indicates an expected call of ListMonitoredNamespaces.

func (*MockControllerMockRecorder) ListPods 

func (mr *MockControllerMockRecorder) ListPods() *gomock.Call

ListPods indicates an expected call of ListPods.

func (*MockControllerMockRecorder) ListServiceAccounts 

func (mr *MockControllerMockRecorder) ListServiceAccounts() *gomock.Call

ListServiceAccounts indicates an expected call of ListServiceAccounts.

func (*MockControllerMockRecorder) ListServiceIdentitiesForService 

func (mr *MockControllerMockRecorder) ListServiceIdentitiesForService(arg0 interface{}) *gomock.Call

ListServiceIdentitiesForService indicates an expected call of ListServiceIdentitiesForService.

func (*MockControllerMockRecorder) ListServices 

func (mr *MockControllerMockRecorder) ListServices() *gomock.Call

ListServices indicates an expected call of ListServices.

func (*MockControllerMockRecorder) UpdateStatus 

func (mr *MockControllerMockRecorder) UpdateStatus(arg0 interface{}) *gomock.Call

UpdateStatus indicates an expected call of UpdateStatus.

type PortForwarder 

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

PortForwarder is a type that implements port forwarding to a pod

func NewPortForwarder 

func NewPortForwarder(dialer httpstream.Dialer, portSpec string) (*PortForwarder, error)

NewPortForwarder creates a new port forwarder to a pod

func (*PortForwarder) Done 

func (pf *PortForwarder) Done() <-chan struct{}

Done returns a channel that is closed after Stop has been called.

func (*PortForwarder) Start 

func (pf *PortForwarder) Start(readyFunc func(pf *PortForwarder) error) error

Start starts the port forwarding and calls the readyFunc callback function when port forwarding is ready

func (*PortForwarder) Stop 

func (pf *PortForwarder) Stop()

Stop stops the port forwarding if not stopped already

Source Files

View all Source files

Directories

Path Synopsis
Package events implements the eventing framework to receive and relay kubernetes events, and a framework to publish events to the Kubernetes API server.
 Package events implements the eventing framework to receive and relay kubernetes events, and a framework to publish events to the Kubernetes API server.

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