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https://github.com/ceph/ceph-csi.git
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5af3fe5deb
this commits add the controller runtime and its dependency to the vendor. Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
105 lines
4.2 KiB
Go
105 lines
4.2 KiB
Go
/*
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Copyright 2018 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package handler
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import (
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"k8s.io/client-go/util/workqueue"
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"sigs.k8s.io/controller-runtime/pkg/event"
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)
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// EventHandler enqueues reconcile.Requests in response to events (e.g. Pod Create). EventHandlers map an Event
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// for one object to trigger Reconciles for either the same object or different objects - e.g. if there is an
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// Event for object with type Foo (using source.KindSource) then reconcile one or more object(s) with type Bar.
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//
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// Identical reconcile.Requests will be batched together through the queuing mechanism before reconcile is called.
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//
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// * Use EnqueueRequestForObject to reconcile the object the event is for
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// - do this for events for the type the Controller Reconciles. (e.g. Deployment for a Deployment Controller)
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//
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// * Use EnqueueRequestForOwner to reconcile the owner of the object the event is for
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// - do this for events for the types the Controller creates. (e.g. ReplicaSets created by a Deployment Controller)
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//
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// * Use EnqueueRequestsFromMapFunc to transform an event for an object to a reconcile of an object
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// of a different type - do this for events for types the Controller may be interested in, but doesn't create.
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// (e.g. If Foo responds to cluster size events, map Node events to Foo objects.)
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//
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// Unless you are implementing your own EventHandler, you can ignore the functions on the EventHandler interface.
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// Most users shouldn't need to implement their own EventHandler.
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type EventHandler interface {
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// Create is called in response to an create event - e.g. Pod Creation.
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Create(event.CreateEvent, workqueue.RateLimitingInterface)
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// Update is called in response to an update event - e.g. Pod Updated.
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Update(event.UpdateEvent, workqueue.RateLimitingInterface)
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// Delete is called in response to a delete event - e.g. Pod Deleted.
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Delete(event.DeleteEvent, workqueue.RateLimitingInterface)
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// Generic is called in response to an event of an unknown type or a synthetic event triggered as a cron or
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// external trigger request - e.g. reconcile Autoscaling, or a Webhook.
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Generic(event.GenericEvent, workqueue.RateLimitingInterface)
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}
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var _ EventHandler = Funcs{}
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// Funcs implements EventHandler.
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type Funcs struct {
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// Create is called in response to an add event. Defaults to no-op.
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// RateLimitingInterface is used to enqueue reconcile.Requests.
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CreateFunc func(event.CreateEvent, workqueue.RateLimitingInterface)
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// Update is called in response to an update event. Defaults to no-op.
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// RateLimitingInterface is used to enqueue reconcile.Requests.
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UpdateFunc func(event.UpdateEvent, workqueue.RateLimitingInterface)
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// Delete is called in response to a delete event. Defaults to no-op.
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// RateLimitingInterface is used to enqueue reconcile.Requests.
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DeleteFunc func(event.DeleteEvent, workqueue.RateLimitingInterface)
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// GenericFunc is called in response to a generic event. Defaults to no-op.
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// RateLimitingInterface is used to enqueue reconcile.Requests.
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GenericFunc func(event.GenericEvent, workqueue.RateLimitingInterface)
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}
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// Create implements EventHandler
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func (h Funcs) Create(e event.CreateEvent, q workqueue.RateLimitingInterface) {
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if h.CreateFunc != nil {
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h.CreateFunc(e, q)
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}
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}
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// Delete implements EventHandler
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func (h Funcs) Delete(e event.DeleteEvent, q workqueue.RateLimitingInterface) {
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if h.DeleteFunc != nil {
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h.DeleteFunc(e, q)
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}
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}
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// Update implements EventHandler
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func (h Funcs) Update(e event.UpdateEvent, q workqueue.RateLimitingInterface) {
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if h.UpdateFunc != nil {
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h.UpdateFunc(e, q)
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}
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}
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// Generic implements EventHandler
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func (h Funcs) Generic(e event.GenericEvent, q workqueue.RateLimitingInterface) {
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if h.GenericFunc != nil {
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h.GenericFunc(e, q)
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}
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}
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