detector

package
v1.9.1 Latest Latest
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 Go to latest Published: Apr 11, 2024 License: Apache-2.0 Imports: 43 Imported by: 0

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Index

Constants

View Source 
const (
	// ObjectChangedByKarmada the key name for a bool value which describes whether the object is changed by Karmada
	ObjectChangedByKarmada = "ObjectChangedByKarmada"
)

Variables

This section is empty.

Functions

func ClusterWideKeyFunc 

func ClusterWideKeyFunc(obj interface{}) (util.QueueKey, error)

ClusterWideKeyFunc generates a ClusterWideKey for object.

func ResourceItemKeyFunc added in v1.9.0 

func ResourceItemKeyFunc(obj interface{}) (util.QueueKey, error)

ResourceItemKeyFunc generates a ClusterWideKeyWithConfig for object.

Types

type ResourceDetector 

type ResourceDetector struct {
	// DiscoveryClientSet is used to resource discovery.
	DiscoveryClientSet *discovery.DiscoveryClient
	// Client is used to retrieve objects, it is often more convenient than lister.
	Client client.Client
	// DynamicClient used to fetch arbitrary resources.
	DynamicClient                dynamic.Interface
	InformerManager              genericmanager.SingleClusterInformerManager
	EventHandler                 cache.ResourceEventHandler
	Processor                    util.AsyncWorker
	SkippedResourceConfig        *util.SkippedResourceConfig
	SkippedPropagatingNamespaces []*regexp.Regexp
	// ResourceInterpreter knows the details of resource structure.
	ResourceInterpreter resourceinterpreter.ResourceInterpreter
	EventRecorder       record.EventRecorder

	RESTMapper meta.RESTMapper

	// ConcurrentPropagationPolicySyncs is the number of PropagationPolicy that are allowed to sync concurrently.
	ConcurrentPropagationPolicySyncs int
	// ConcurrentClusterPropagationPolicySyncs is the number of ClusterPropagationPolicy that are allowed to sync concurrently.
	ConcurrentClusterPropagationPolicySyncs int
	// ConcurrentResourceTemplateSyncs is the number of resource templates that are allowed to sync concurrently.
	// Larger number means responsive resource template syncing but more CPU(and network) load.
	ConcurrentResourceTemplateSyncs int

	// RateLimiterOptions is the configuration for rate limiter which may significantly influence the performance of
	// the controller.
	RateLimiterOptions ratelimiterflag.Options
	// contains filtered or unexported fields
}

ResourceDetector is a resource watcher which watches all resources and reconcile the events.

func (*ResourceDetector) AddWaiting 

func (d *ResourceDetector) AddWaiting(objectKey keys.ClusterWideKey)

AddWaiting adds object's key to waiting list.

func (*ResourceDetector) ApplyClusterPolicy 

func (d *ResourceDetector) ApplyClusterPolicy(object *unstructured.Unstructured, objectKey keys.ClusterWideKey,
	resourceChangeByKarmada bool, policy *policyv1alpha1.ClusterPropagationPolicy) (err error)

ApplyClusterPolicy starts propagate the object referenced by object key according to ClusterPropagationPolicy. nolint:gocyclo

func (*ResourceDetector) ApplyPolicy 

func (d *ResourceDetector) ApplyPolicy(object *unstructured.Unstructured, objectKey keys.ClusterWideKey,
	resourceChangeByKarmada bool, policy *policyv1alpha1.PropagationPolicy) (err error)

ApplyPolicy starts propagate the object referenced by object key according to PropagationPolicy.

func (*ResourceDetector) BuildClusterResourceBinding 

func (d *ResourceDetector) BuildClusterResourceBinding(object *unstructured.Unstructured, objectKey keys.ClusterWideKey,
	labels, annotations map[string]string, policySpec *policyv1alpha1.PropagationSpec) (*workv1alpha2.ClusterResourceBinding, error)

BuildClusterResourceBinding builds a desired ClusterResourceBinding for object.

func (*ResourceDetector) BuildResourceBinding 

func (d *ResourceDetector) BuildResourceBinding(object *unstructured.Unstructured, objectKey keys.ClusterWideKey,
	labels, annotations map[string]string, policySpec *policyv1alpha1.PropagationSpec) (*workv1alpha2.ResourceBinding, error)

BuildResourceBinding builds a desired ResourceBinding for object.

func (*ResourceDetector) ClaimClusterPolicyForObject 

func (d *ResourceDetector) ClaimClusterPolicyForObject(object *unstructured.Unstructured, policy *policyv1alpha1.ClusterPropagationPolicy) (string, error)

ClaimClusterPolicyForObject set cluster identifier which the object associated with

func (*ResourceDetector) ClaimPolicyForObject 

func (d *ResourceDetector) ClaimPolicyForObject(object *unstructured.Unstructured, policy *policyv1alpha1.PropagationPolicy) (string, error)

ClaimPolicyForObject set policy identifier which the object associated with.

func (*ResourceDetector) CleanupClusterResourceBindingLabels added in v1.2.0 

func (d *ResourceDetector) CleanupClusterResourceBindingLabels(crb *workv1alpha2.ClusterResourceBinding, labels ...string) error

CleanupClusterResourceBindingLabels removes labels from cluster resource binding.

func (*ResourceDetector) CleanupLabels 

func (d *ResourceDetector) CleanupLabels(objRef workv1alpha2.ObjectReference, labelKeys ...string) error

CleanupLabels removes labels from object referencing by objRef.

func (*ResourceDetector) CleanupResourceBindingLabels added in v1.2.0 

func (d *ResourceDetector) CleanupResourceBindingLabels(rb *workv1alpha2.ResourceBinding, labels ...string) error

CleanupResourceBindingLabels removes labels from resource binding.

func (*ResourceDetector) EventFilter 

func (d *ResourceDetector) EventFilter(obj interface{}) bool

EventFilter tells if an object should be taken care of.

All objects under Karmada reserved namespace should be ignored: - karmada-system - karmada-cluster - karmada-es-*

If '--skipped-propagating-namespaces'(defaults to kube-.*) is specified, all resources in the skipped-propagating-namespaces will be ignored.

func (*ResourceDetector) GetMatching 

func (d *ResourceDetector) GetMatching(resourceSelectors []policyv1alpha1.ResourceSelector) []keys.ClusterWideKey

GetMatching gets objects keys in waiting list that matches one of resource selectors.

func (*ResourceDetector) GetUnstructuredObject 

func (d *ResourceDetector) GetUnstructuredObject(objectKey keys.ClusterWideKey) (*unstructured.Unstructured, error)

GetUnstructuredObject retrieves object by key and returned its unstructured. Any updates to this resource template are not recommended as it may come from the informer cache. We should abide by the principle of making a deep copy first and then modifying it. See issue: https://github.com/karmada-io/karmada/issues/3878.

func (*ResourceDetector) HandleClusterPropagationPolicyCreationOrUpdate added in v1.4.0 

func (d *ResourceDetector) HandleClusterPropagationPolicyCreationOrUpdate(policy *policyv1alpha1.ClusterPropagationPolicy) error

HandleClusterPropagationPolicyCreationOrUpdate handles ClusterPropagationPolicy add and update event. When a new policy arrives, should check whether existing objects are no longer matched by the current policy, if yes, clean the labels on the object. And then check if object in waiting list matches the policy, if yes remove the object from waiting list and throw the object to it's reconcile queue. If not, do nothing. Finally, handle the cluster propagation policy preemption process if preemption is enabled.

func (*ResourceDetector) HandleClusterPropagationPolicyDeletion 

func (d *ResourceDetector) HandleClusterPropagationPolicyDeletion(policyName string) error

HandleClusterPropagationPolicyDeletion handles ClusterPropagationPolicy delete event. After a policy is removed, the label marked on relevant resource template will be removed (which gives the resource template a change to match another policy).

Note: The relevant ClusterResourceBinding or ResourceBinding will continue to exist until the resource template is gone.

func (*ResourceDetector) HandleDeprioritizedClusterPropagationPolicy added in v1.7.0 

func (d *ResourceDetector) HandleDeprioritizedClusterPropagationPolicy(oldPolicy policyv1alpha1.ClusterPropagationPolicy, newPolicy policyv1alpha1.ClusterPropagationPolicy)

HandleDeprioritizedClusterPropagationPolicy responses to priority change of a ClusterPropagationPolicy, if the change is from high priority (e.g. 5) to low priority(e.g. 3), it will check if there is another ClusterPropagationPolicy could preempt the targeted resource, and put the ClusterPropagationPolicy in the queue to trigger preemption.

func (*ResourceDetector) HandleDeprioritizedPropagationPolicy added in v1.7.0 

func (d *ResourceDetector) HandleDeprioritizedPropagationPolicy(oldPolicy policyv1alpha1.PropagationPolicy, newPolicy policyv1alpha1.PropagationPolicy)

HandleDeprioritizedPropagationPolicy responses to priority change of a PropagationPolicy, if the change is from high priority (e.g. 5) to low priority(e.g. 3), it will check if there is another PropagationPolicy could preempt the targeted resource, and put the PropagationPolicy in the queue to trigger preemption.

func (*ResourceDetector) HandlePropagationPolicyCreationOrUpdate added in v1.4.0 

func (d *ResourceDetector) HandlePropagationPolicyCreationOrUpdate(policy *policyv1alpha1.PropagationPolicy) error

HandlePropagationPolicyCreationOrUpdate handles PropagationPolicy add and update event. When a new policy arrives, should check whether existing objects are no longer matched by the current policy, if yes, clean the labels on the object. And then check if object in waiting list matches the policy, if yes remove the object from waiting list and throw the object to it's reconcile queue. If not, do nothing. Finally, handle the propagation policy preemption process if preemption is enabled.

func (*ResourceDetector) HandlePropagationPolicyDeletion 

func (d *ResourceDetector) HandlePropagationPolicyDeletion(policyNS string, policyName string) error

HandlePropagationPolicyDeletion handles PropagationPolicy delete event. After a policy is removed, the label marked on relevant resource template will be removed (which gives the resource template a change to match another policy).

Note: The relevant ResourceBinding will continue to exist until the resource template is gone.

func (*ResourceDetector) LookForMatchedClusterPolicy 

func (d *ResourceDetector) LookForMatchedClusterPolicy(object *unstructured.Unstructured, objectKey keys.ClusterWideKey) (*policyv1alpha1.ClusterPropagationPolicy, error)

LookForMatchedClusterPolicy tries to find a ClusterPropagationPolicy for object referenced by object key.

func (*ResourceDetector) LookForMatchedPolicy 

func (d *ResourceDetector) LookForMatchedPolicy(object *unstructured.Unstructured, objectKey keys.ClusterWideKey) (*policyv1alpha1.PropagationPolicy, error)

LookForMatchedPolicy tries to find a policy for object referenced by object key.

func (*ResourceDetector) NeedLeaderElection 

func (d *ResourceDetector) NeedLeaderElection() bool

NeedLeaderElection implements LeaderElectionRunnable interface. So that the detector could run in the leader election mode.

func (*ResourceDetector) OnAdd 

func (d *ResourceDetector) OnAdd(obj interface{})

OnAdd handles object add event and push the object to queue.

func (*ResourceDetector) OnClusterPropagationPolicyAdd 

func (d *ResourceDetector) OnClusterPropagationPolicyAdd(obj interface{})

OnClusterPropagationPolicyAdd handles object add event and push the object to queue.

func (*ResourceDetector) OnClusterPropagationPolicyDelete 

func (d *ResourceDetector) OnClusterPropagationPolicyDelete(obj interface{})

OnClusterPropagationPolicyDelete handles object delete event and push the object to queue.

func (*ResourceDetector) OnClusterPropagationPolicyUpdate 

func (d *ResourceDetector) OnClusterPropagationPolicyUpdate(oldObj, newObj interface{})

OnClusterPropagationPolicyUpdate handles object update event and push the object to queue.

func (*ResourceDetector) OnDelete 

func (d *ResourceDetector) OnDelete(obj interface{})

OnDelete handles object delete event and push the object to queue.

func (*ResourceDetector) OnPropagationPolicyAdd 

func (d *ResourceDetector) OnPropagationPolicyAdd(obj interface{})

OnPropagationPolicyAdd handles object add event and push the object to queue.

func (*ResourceDetector) OnPropagationPolicyDelete 

func (d *ResourceDetector) OnPropagationPolicyDelete(obj interface{})

OnPropagationPolicyDelete handles object delete event and push the object to queue.

func (*ResourceDetector) OnPropagationPolicyUpdate 

func (d *ResourceDetector) OnPropagationPolicyUpdate(oldObj, newObj interface{})

OnPropagationPolicyUpdate handles object update event and push the object to queue.

func (*ResourceDetector) OnUpdate 

func (d *ResourceDetector) OnUpdate(oldObj, newObj interface{})

OnUpdate handles object update event and push the object to queue.

func (*ResourceDetector) Reconcile 

func (d *ResourceDetector) Reconcile(key util.QueueKey) error

Reconcile performs a full reconciliation for the object referred to by the key. The key will be re-queued if an error is non-nil.

func (*ResourceDetector) ReconcileClusterPropagationPolicy 

func (d *ResourceDetector) ReconcileClusterPropagationPolicy(key util.QueueKey) error

ReconcileClusterPropagationPolicy handles ClusterPropagationPolicy resource changes. When adding a ClusterPropagationPolicy, the detector will pick the objects in waitingObjects list that matches the policy and put the object to queue. When removing a ClusterPropagationPolicy, the relevant ClusterResourceBinding will be removed and the relevant objects will be put into queue again to try another policy.

func (*ResourceDetector) ReconcilePropagationPolicy 

func (d *ResourceDetector) ReconcilePropagationPolicy(key util.QueueKey) error

ReconcilePropagationPolicy handles PropagationPolicy resource changes. When adding a PropagationPolicy, the detector will pick the objects in waitingObjects list that matches the policy and put the object to queue. When removing a PropagationPolicy, the relevant ResourceBinding will be removed and the relevant objects will be put into queue again to try another policy.

func (*ResourceDetector) RemoveWaiting 

func (d *ResourceDetector) RemoveWaiting(objectKey keys.ClusterWideKey)

RemoveWaiting removes object's key from waiting list.

func (*ResourceDetector) Start 

func (d *ResourceDetector) Start(ctx context.Context) error

Start runs the detector, never stop until stopCh closed.

type ResourceItem added in v1.9.0 

type ResourceItem struct {
	Obj                     runtime.Object
	ResourceChangeByKarmada bool
}

ResourceItem a object key with certain extended config

Source Files

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