informers

Documentation

Overview

Package informers centralize informers by creating a single object that runs a set of informers, instead of creating different objects that each manage their own informer collections. A pointer to this object is then shared with all objects that need it.

Index

• Constants
• type GatewayAPIResource
• type InformerCollection
  • func NewInformerCollection(meshName string, stop <-chan struct{}, opts ...InformerCollectionOption) (*InformerCollection, error)
  • func (ic *InformerCollection) Add(key InformerKey, obj interface{}, t *testing.T) error
  • func (ic *InformerCollection) AddEventHandler(informerKey InformerKey, handler cache.ResourceEventHandler)
  • func (ic *InformerCollection) GetByKey(informerKey InformerKey, objectKey string) (interface{}, bool, error)
  • func (ic *InformerCollection) GetGatewayResourcesFromCache(resourceType ResourceType, shouldSort bool) []client.Object
  • func (ic *InformerCollection) GetListers() *Lister
  • func (ic *InformerCollection) IsMonitoredNamespace(namespace string) bool
  • func (ic *InformerCollection) List(informerKey InformerKey) []interface{}
  • func (ic *InformerCollection) Update(key InformerKey, obj interface{}, t *testing.T) error
• type InformerCollectionOption
  • func WithConfigClient(configClient configClientset.Interface, meshConfigName, fsmNamespace string) InformerCollectionOption
  • func WithConnectorClient(connectorClient connectorClientset.Interface) InformerCollectionOption
  • func WithGatewayAPIClient(gatewayAPIClient gatewayApiClientset.Interface) InformerCollectionOption
  • func WithIngressClient(kubeClient kubernetes.Interface, nsigClient nsigClientset.Interface) InformerCollectionOption
  • func WithKubeClient(kubeClient kubernetes.Interface) InformerCollectionOption
  • func WithKubeClientWithoutNamespace(kubeClient kubernetes.Interface) InformerCollectionOption
  • func WithMachineClient(machineClient machineClientset.Interface) InformerCollectionOption
  • func WithMultiClusterClient(multiclusterClient multiclusterClientset.Interface) InformerCollectionOption
  • func WithNetworkingClient(networkingClient networkingClientset.Interface) InformerCollectionOption
  • func WithPluginClient(pluginClient pluginClientset.Interface) InformerCollectionOption
  • func WithPolicyAttachmentClient(policyAttachmentClient policyAttachmentClientset.Interface) InformerCollectionOption
  • func WithPolicyClient(policyClient policyClientset.Interface) InformerCollectionOption
  • func WithSMIClients(smiTrafficSplitClient smiTrafficSplitClient.Interface, ...) InformerCollectionOption
• type InformerKey
• type Lister
• type ResourceType

Constants

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
)

Types

type GatewayAPIResource

type GatewayAPIResource interface {
	*gwv1.GatewayClass | *gwv1.Gateway |
		*gwv1.HTTPRoute | *gwv1.GRPCRoute | *gwv1alpha2.TLSRoute | *gwv1alpha2.TCPRoute | *gwv1alpha2.UDPRoute | *gwv1beta1.ReferenceGrant |
		*gwpav1alpha1.RateLimitPolicy | *gwpav1alpha1.SessionStickyPolicy | *gwpav1alpha1.LoadBalancerPolicy |
		*gwpav1alpha1.CircuitBreakingPolicy | *gwpav1alpha1.AccessControlPolicy | *gwpav1alpha1.HealthCheckPolicy |
		*gwpav1alpha1.FaultInjectionPolicy | *gwpav1alpha1.UpstreamTLSPolicy | *gwpav1alpha1.RetryPolicy
}

GatewayAPIResource is the type used to represent the Gateway API resource

type InformerCollection

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

InformerCollection is an abstraction around a set of informers initialized with the clients stored in its fields. This data type should only be passed around as a pointer

func NewInformerCollection

func NewInformerCollection(meshName string, stop <-chan struct{}, opts ...InformerCollectionOption) (*InformerCollection, error)

NewInformerCollection creates a new InformerCollection

func (*InformerCollection) Add

func (ic *InformerCollection) Add(key InformerKey, obj interface{}, t *testing.T) error

Add is only exported for the sake of tests and requires a testing.T to ensure it's never used in production. This functionality was added for the express purpose of testing flexibility since alternatives can often lead to flaky tests and race conditions between the time an object is added to a fake clientset and when that object is actually added to the informer `cache.Store`

func (*InformerCollection) AddEventHandler

func (ic *InformerCollection) AddEventHandler(informerKey InformerKey, handler cache.ResourceEventHandler)

AddEventHandler adds an handler to the informer indexed by the given InformerKey

func (*InformerCollection) GetByKey

func (ic *InformerCollection) GetByKey(informerKey InformerKey, objectKey string) (interface{}, bool, error)

GetByKey retrieves an item (based on the given index) from the store of the informer indexed by the given InformerKey

func (*InformerCollection) GetGatewayResourcesFromCache

func (ic *InformerCollection) GetGatewayResourcesFromCache(resourceType ResourceType, shouldSort bool) []client.Object

func (*InformerCollection) GetListers

func (ic *InformerCollection) GetListers() *Lister

GetListers returns the listers for the informers

func (*InformerCollection) IsMonitoredNamespace

func (ic *InformerCollection) IsMonitoredNamespace(namespace string) bool

IsMonitoredNamespace returns a boolean indicating if the namespace is among the list of monitored namespaces

func (*InformerCollection) List

func (ic *InformerCollection) List(informerKey InformerKey) []interface{}

List returns the contents of the store of the informer indexed by the given InformerKey

func (*InformerCollection) Update

func (ic *InformerCollection) Update(key InformerKey, obj interface{}, t *testing.T) error

Update is only exported for the sake of tests and requires a testing.T to ensure it's never used in production. This functionality was added for the express purpose of testing flexibility since the alternatives can often lead to flaky tests and race conditions between the time an object is added to a fake clientset and when that object is actually added to the informer `cache.Store`

type InformerCollectionOption

type InformerCollectionOption func(*InformerCollection)

InformerCollectionOption is a function that modifies an informer collection

func WithConfigClient

func WithConfigClient(configClient configClientset.Interface, meshConfigName, fsmNamespace string) InformerCollectionOption

WithConfigClient sets the config client for the InformerCollection

func WithConnectorClient

func WithConnectorClient(connectorClient connectorClientset.Interface) InformerCollectionOption

WithConnectorClient sets the connector client for the InformerCollection

func WithGatewayAPIClient

func WithGatewayAPIClient(gatewayAPIClient gatewayApiClientset.Interface) InformerCollectionOption

WithGatewayAPIClient sets the gateway api client for the InformerCollection

func WithIngressClient

func WithIngressClient(kubeClient kubernetes.Interface, nsigClient nsigClientset.Interface) InformerCollectionOption

WithIngressClient sets the networking client for the InformerCollection

func WithKubeClient

func WithKubeClient(kubeClient kubernetes.Interface) InformerCollectionOption

WithKubeClient sets the kubeClient for the InformerCollection

func WithKubeClientWithoutNamespace

func WithKubeClientWithoutNamespace(kubeClient kubernetes.Interface) InformerCollectionOption

WithKubeClientWithoutNamespace sets the kubeClient for the InformerCollection

func WithMachineClient

func WithMachineClient(machineClient machineClientset.Interface) InformerCollectionOption

WithMachineClient sets the machine client for the InformerCollection

func WithMultiClusterClient

func WithMultiClusterClient(multiclusterClient multiclusterClientset.Interface) InformerCollectionOption

WithMultiClusterClient sets the multicluster client for the InformerCollection

func WithNetworkingClient

func WithNetworkingClient(networkingClient networkingClientset.Interface) InformerCollectionOption

WithNetworkingClient sets the networking client for the InformerCollection

func WithPluginClient

func WithPluginClient(pluginClient pluginClientset.Interface) InformerCollectionOption

WithPluginClient sets the plugin client for the InformerCollection

func WithPolicyAttachmentClient

func WithPolicyAttachmentClient(policyAttachmentClient policyAttachmentClientset.Interface) InformerCollectionOption

WithPolicyAttachmentClient sets the PolicyAttachment client for the InformerCollection

func WithPolicyClient

func WithPolicyClient(policyClient policyClientset.Interface) InformerCollectionOption

WithPolicyClient sets the policy client for the InformerCollection

func WithSMIClients

func WithSMIClients(smiTrafficSplitClient smiTrafficSplitClient.Interface, smiTrafficSpecClient smiTrafficSpecClient.Interface, smiAccessClient smiTrafficAccessClient.Interface) InformerCollectionOption

WithSMIClients sets the SMI clients for the InformerCollection

type InformerKey

type InformerKey string

InformerKey stores the different Informers we keep for K8s resources

const (
	// InformerKeyNamespace is the InformerKey for a Namespace informer
	InformerKeyNamespace InformerKey = "Namespace"
	// InformerKeyNamespaceAll is the InformerKey for all Namespaces informer
	InformerKeyNamespaceAll InformerKey = "NamespaceAll"
	// InformerKeyService is the InformerKey for a Service informer
	InformerKeyService InformerKey = "Service"
	// InformerKeyPod is the InformerKey for a Pod informer
	InformerKeyPod InformerKey = "Pod"
	// InformerKeyEndpoints is the InformerKey for a Endpoints informer
	InformerKeyEndpoints InformerKey = "Endpoints"
	// InformerKeyEndpointSlices is the InformerKey for a EndpointSlices informer
	InformerKeyEndpointSlices InformerKey = "EndpointSlices"
	// InformerKeyServiceAccount is the InformerKey for a ServiceAccount informer
	InformerKeyServiceAccount InformerKey = "ServiceAccount"
	// InformerKeySecret is the InformerKey for a Secret informer
	InformerKeySecret InformerKey = "Secret"
	// InformerKeyConfigMap is the InformerKey for a ConfigMap informer
	InformerKeyConfigMap InformerKey = "ConfigMap"

	// InformerKeyTrafficSplit is the InformerKey for a TrafficSplit informer
	InformerKeyTrafficSplit InformerKey = "TrafficSplit"
	// InformerKeyTrafficTarget is the InformerKey for a TrafficTarget informer
	InformerKeyTrafficTarget InformerKey = "TrafficTarget"
	// InformerKeyHTTPRouteGroup is the InformerKey for a HTTPRouteGroup informer
	InformerKeyHTTPRouteGroup InformerKey = "HTTPRouteGroup"
	// InformerKeyTCPRoute is the InformerKey for a TCPRoute informer
	InformerKeyTCPRoute InformerKey = "TCPRoute"

	// InformerKeyMeshConfig is the InformerKey for a MeshConfig informer
	InformerKeyMeshConfig InformerKey = "MeshConfig"
	// InformerKeyMeshRootCertificate is the InformerKey for a MeshRootCertificate informer
	InformerKeyMeshRootCertificate InformerKey = "MeshRootCertificate"

	// InformerKeyEgress is the InformerKey for an Egress informer
	InformerKeyEgress InformerKey = "Egress"
	// InformerKeyEgressGateway is the InformerKey for an EgressGateway informer
	InformerKeyEgressGateway InformerKey = "EgressGateway"
	// InformerKeyIngressBackend is the InformerKey for a IngressBackend informer
	InformerKeyIngressBackend InformerKey = "IngressBackend"
	// InformerKeyUpstreamTrafficSetting is the InformerKey for a UpstreamTrafficSetting informer
	InformerKeyUpstreamTrafficSetting InformerKey = "UpstreamTrafficSetting"
	// InformerKeyRetry is the InformerKey for a Retry informer
	InformerKeyRetry InformerKey = "Retry"
	// InformerKeyAccessControl is the InformerKey for a AccessControl informer
	InformerKeyAccessControl InformerKey = "AccessControl"
	// InformerKeyAccessCert is the InformerKey for a AccessCert informer
	InformerKeyAccessCert InformerKey = "AccessCert"
	// InformerKeyServiceImport is the InformerKey for a ServiceImport informer
	InformerKeyServiceImport InformerKey = "ServiceImport"
	// InformerKeyServiceExport is the InformerKey for a ServiceExport informer
	InformerKeyServiceExport InformerKey = "ServiceExport"
	// InformerKeyGlobalTrafficPolicy is the InformerKey for a GlobalTrafficPolicy informer
	InformerKeyGlobalTrafficPolicy InformerKey = "GlobalTrafficPolicy"
	// InformerKeyIngressClass is the InformerKey for a IngressClass informer
	InformerKeyIngressClass InformerKey = "IngressClass"

	// InformerKeyPlugin is the InformerKey for a Plugin informer
	InformerKeyPlugin InformerKey = "Plugin"
	// InformerKeyPluginChain is the InformerKey for a PluginChain informer
	InformerKeyPluginChain InformerKey = "PluginChain"
	// InformerKeyPluginConfig is the InformerKey for a PluginConfig informer
	InformerKeyPluginConfig InformerKey = "PluginConfig"

	// InformerKeyVirtualMachine is the InformerKey for a VirtualMachine informer
	InformerKeyVirtualMachine InformerKey = "VirtualMachine"

	// InformerKeyConsulConnector is the InformerKey for a ConsulConnector informer
	InformerKeyConsulConnector InformerKey = "ConsulConnector"

	// InformerKeyEurekaConnector is the InformerKey for a EurekaConnector informer
	InformerKeyEurekaConnector InformerKey = "EurekaConnector"

	// InformerKeyNacosConnector is the InformerKey for a NacosConnector informer
	InformerKeyNacosConnector InformerKey = "NacosConnector"

	// InformerKeyMachineConnector is the InformerKey for a MachineConnector informer
	InformerKeyMachineConnector InformerKey = "MachineConnector"

	// InformerKeyGatewayConnector is the InformerKey for a GatewayConnector informer
	InformerKeyGatewayConnector InformerKey = "GatewayConnector"

	// InformerKeyK8sIngressClass is the InformerKey for a k8s IngressClass informer
	InformerKeyK8sIngressClass InformerKey = "IngressClass-k8s"
	// InformerKeyK8sIngress is the InformerKey for a k8s Ingress informer
	InformerKeyK8sIngress InformerKey = "Ingress-k8s"

	// InformerKeyNamespacedIngress is the InformerKey for a NamespacedIngress informer
	InformerKeyNamespacedIngress InformerKey = "NamespacedIngress"

	// InformerKeyGatewayAPIGatewayClass is the InformerKey for a GatewayClass informer
	InformerKeyGatewayAPIGatewayClass InformerKey = "GatewayClass-gwapi"
	// InformerKeyGatewayAPIGateway is the InformerKey for a Gateway informer
	InformerKeyGatewayAPIGateway InformerKey = "Gateway-gwapi"
	// InformerKeyGatewayAPIHTTPRoute is the InformerKey for a HTTPRoute informer
	InformerKeyGatewayAPIHTTPRoute InformerKey = "HTTPRoute-gwapi"
	// InformerKeyGatewayAPIGRPCRoute is the InformerKey for a GRPCRoute informer
	InformerKeyGatewayAPIGRPCRoute InformerKey = "GRPCRoute-gwapi"
	// InformerKeyGatewayAPITLSRoute is the InformerKey for a TLSRoute informer
	InformerKeyGatewayAPITLSRoute InformerKey = "TLSRoute-gwapi"
	// InformerKeyGatewayAPITCPRoute is the InformerKey for a TCPRoute informer
	InformerKeyGatewayAPITCPRoute InformerKey = "TCPRoute-gwapi"
	// InformerKeyGatewayAPIUDPRoute is the InformerKey for a UDPRoute informer
	InformerKeyGatewayAPIUDPRoute InformerKey = "UDPRoute-gwapi"
	// InformerKeyGatewayAPIReferenceGrant is the InformerKey for a ReferenceGrant informer
	InformerKeyGatewayAPIReferenceGrant InformerKey = "ReferenceGrant-gwapi"
	// InformerKeyRateLimitPolicy is the InformerKey for a RateLimitPolicy informer
	InformerKeyRateLimitPolicy InformerKey = "RateLimitPolicy"
	// InformerKeySessionStickyPolicy is the InformerKey for a SessionStickyPolicy informer
	InformerKeySessionStickyPolicy InformerKey = "SessionStickyPolicy"
	// InformerKeyLoadBalancerPolicy is the InformerKey for a LoadBalancerPolicy informer
	InformerKeyLoadBalancerPolicy InformerKey = "LoadBalancerPolicy"
	// InformerKeyCircuitBreakingPolicy is the InformerKey for a CircuitBreakingPolicy informer
	InformerKeyCircuitBreakingPolicy InformerKey = "CircuitBreakingPolicy"
	// InformerKeyAccessControlPolicy is the InformerKey for a AccessControlPolicy informer
	InformerKeyAccessControlPolicy InformerKey = "AccessControlPolicy"
	// InformerKeyHealthCheckPolicy is the InformerKey for a HealthCheckPolicy informer
	InformerKeyHealthCheckPolicy InformerKey = "HealthCheckPolicy"
	// InformerKeyFaultInjectionPolicy is the InformerKey for a FaultInjectionPolicy informer
	InformerKeyFaultInjectionPolicy InformerKey = "FaultInjectionPolicy"
	// InformerKeyUpstreamTLSPolicy is the InformerKey for a UpstreamTLSPolicy informer
	InformerKeyUpstreamTLSPolicy InformerKey = "UpstreamTLSPolicy"
	// InformerKeyRetryPolicy is the InformerKey for a RetryPolicy informer
	InformerKeyRetryPolicy InformerKey = "RetryPolicy"
)

type Lister

type Lister struct {
	Service               v1.ServiceLister
	ServiceImport         mcsv1alpha1.ServiceImportLister
	Endpoints             v1.EndpointsLister
	EndpointSlice         discoveryv1.EndpointSliceLister
	Secret                v1.SecretLister
	ConfigMap             v1.ConfigMapLister
	GatewayClass          gwv1lister.GatewayClassLister
	Gateway               gwv1lister.GatewayLister
	HTTPRoute             gwv1lister.HTTPRouteLister
	GRPCRoute             gwv1lister.GRPCRouteLister
	TLSRoute              gwv1alpha2lister.TLSRouteLister
	TCPRoute              gwv1alpha2lister.TCPRouteLister
	UDPRoute              gwv1alpha2lister.UDPRouteLister
	K8sIngressClass       networkingv1.IngressClassLister
	K8sIngress            networkingv1.IngressLister
	NamespacedIngress     nsigv1alpha1.NamespacedIngressLister
	RateLimitPolicy       gwpav1alpha1lister.RateLimitPolicyLister
	SessionStickyPolicy   gwpav1alpha1lister.SessionStickyPolicyLister
	LoadBalancerPolicy    gwpav1alpha1lister.LoadBalancerPolicyLister
	CircuitBreakingPolicy gwpav1alpha1lister.CircuitBreakingPolicyLister
	AccessControlPolicy   gwpav1alpha1lister.AccessControlPolicyLister
	HealthCheckPolicy     gwpav1alpha1lister.HealthCheckPolicyLister
	FaultInjectionPolicy  gwpav1alpha1lister.FaultInjectionPolicyLister
	UpstreamTLSPolicy     gwpav1alpha1lister.UpstreamTLSPolicyLister
	RetryPolicy           gwpav1alpha1lister.RetryPolicyLister
	ReferenceGrant        gwv1beta1lister.ReferenceGrantLister
	Namespace             v1.NamespaceLister
}

Lister is the listers for the informers in the collection

type ResourceType

type ResourceType string

ResourceType is the type used to represent the type of resource

const (
	// ServicesResourceType is the type used to represent the services resource
	ServicesResourceType ResourceType = "services"

	// EndpointSlicesResourceType is the type used to represent the endpoint slices resource
	EndpointSlicesResourceType ResourceType = "endpointslices"

	// EndpointsResourceType is the type used to represent the endpoints resource
	EndpointsResourceType ResourceType = "endpoints"

	// ServiceImportsResourceType is the type used to represent the service imports resource
	ServiceImportsResourceType ResourceType = "serviceimports"

	// SecretsResourceType is the type used to represent the secrets resource
	SecretsResourceType ResourceType = "secrets"

	// ConfigMapsResourceType is the type used to represent the config maps resource
	ConfigMapsResourceType ResourceType = "configmaps"

	// GatewayClassesResourceType is the type used to represent the gateway classes resource
	GatewayClassesResourceType ResourceType = "gatewayclasses"

	// GatewaysResourceType is the type used to represent the gateways resource
	GatewaysResourceType ResourceType = "gateways"

	// HTTPRoutesResourceType is the type used to represent the HTTP routes resource
	HTTPRoutesResourceType ResourceType = "httproutes"

	// GRPCRoutesResourceType is the type used to represent the gRPC routes resource
	GRPCRoutesResourceType ResourceType = "grpcroutes"

	// TCPRoutesResourceType is the type used to represent the TCP routes resource
	TCPRoutesResourceType ResourceType = "tcproutes"

	// TLSRoutesResourceType is the type used to represent the TLS routes resource
	TLSRoutesResourceType ResourceType = "tlsroutes"

	// UDPRoutesResourceType is the type used to represent the UDP routes resource
	UDPRoutesResourceType ResourceType = "udproutes"

	// ReferenceGrantResourceType is the type used to represent the reference grants resource
	ReferenceGrantResourceType ResourceType = "referencegrants"

	// RateLimitPoliciesResourceType is the type used to represent the rate limit policies resource
	RateLimitPoliciesResourceType ResourceType = "ratelimits"

	// SessionStickyPoliciesResourceType is the type used to represent the session sticky policies resource
	SessionStickyPoliciesResourceType ResourceType = "sessionstickies"

	// LoadBalancerPoliciesResourceType is the type used to represent the load balancer policies resource
	LoadBalancerPoliciesResourceType ResourceType = "loadbalancers"

	// CircuitBreakingPoliciesResourceType is the type used to represent the circuit breaking policies resource
	CircuitBreakingPoliciesResourceType ResourceType = "circuitbreakings"

	// AccessControlPoliciesResourceType is the type used to represent the access control policies resource
	AccessControlPoliciesResourceType ResourceType = "accesscontrols"

	// HealthCheckPoliciesResourceType is the type used to represent the health check policies resource
	HealthCheckPoliciesResourceType ResourceType = "healthchecks"

	// FaultInjectionPoliciesResourceType is the type used to represent the fault injection policies resource
	FaultInjectionPoliciesResourceType ResourceType = "faultinjections"

	// UpstreamTLSPoliciesResourceType is the type used to represent the upstream tls policies resource
	UpstreamTLSPoliciesResourceType ResourceType = "upstreamtls"

	// RetryPoliciesResourceType is the type used to represent the retry policies resource
	RetryPoliciesResourceType ResourceType = "retries"
)