forked from rook/rook
105 lines
3.4 KiB
Go
105 lines
3.4 KiB
Go
/*
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Copyright 2016 The Rook Authors. All rights reserved.
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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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Some of the code below came from https://github.com/coreos/etcd-operator
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which also has the apache 2.0 license.
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*/
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// Package rgw to manage a rook object store.
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package rgw
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import (
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"fmt"
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"github.com/rook/rook/pkg/clusterd"
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"github.com/rook/rook/pkg/operator/k8sutil"
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"github.com/rook/rook/pkg/operator/kit"
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"k8s.io/apimachinery/pkg/runtime"
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"k8s.io/client-go/tools/cache"
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)
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// ObjectStoreController represents a controller object for object store custom resources
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type ObjectStoreController struct {
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context *clusterd.Context
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scheme *runtime.Scheme
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versionTag string
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hostNetwork bool
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}
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// NewObjectStoreController create controller for watching object store custom resources created
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func NewObjectStoreController(context *clusterd.Context, versionTag string, hostNetwork bool) (*ObjectStoreController, error) {
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return &ObjectStoreController{
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context: context,
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versionTag: versionTag,
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hostNetwork: hostNetwork,
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}, nil
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}
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// StartWatch watches for instances of ObjectStore custom resources and acts on them
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func (c *ObjectStoreController) StartWatch(namespace string, stopCh chan struct{}) error {
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client, scheme, err := kit.NewHTTPClient(k8sutil.CustomResourceGroup, k8sutil.V1Alpha1, schemeBuilder)
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if err != nil {
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return fmt.Errorf("failed to get a k8s client for watching object store resources: %v", err)
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}
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c.scheme = scheme
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resourceHandlerFuncs := cache.ResourceEventHandlerFuncs{
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AddFunc: c.onAdd,
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UpdateFunc: c.onUpdate,
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DeleteFunc: c.onDelete,
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}
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watcher := kit.NewWatcher(ObjectStoreResource, namespace, resourceHandlerFuncs, client)
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go watcher.Watch(&ObjectStore{}, stopCh)
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return nil
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}
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func (c *ObjectStoreController) onAdd(obj interface{}) {
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objectStore := obj.(*ObjectStore)
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// NEVER modify objects from the store. It's a read-only, local cache.
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// Use scheme.Copy() to make a deep copy of original object.
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copyObj, err := c.scheme.Copy(objectStore)
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if err != nil {
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fmt.Printf("ERROR creating a deep copy of object store: %v\n", err)
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return
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}
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objectStoreCopy := copyObj.(*ObjectStore)
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err = objectStoreCopy.Create(c.context, c.versionTag, c.hostNetwork)
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if err != nil {
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logger.Errorf("failed to create object store %s. %+v", objectStore.Name, err)
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}
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}
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func (c *ObjectStoreController) onUpdate(oldObj, newObj interface{}) {
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//oldObjectStore := oldObj.(*ObjectStore)
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newObjectStore := newObj.(*ObjectStore)
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// if the object store is modified, allow the object store to be created if it wasn't already
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err := newObjectStore.Update(c.context, c.versionTag, c.hostNetwork)
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if err != nil {
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logger.Errorf("failed to create (modify) object store %s. %+v", newObjectStore.Name, err)
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}
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}
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func (c *ObjectStoreController) onDelete(obj interface{}) {
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objectStore := obj.(*ObjectStore)
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err := objectStore.Delete(c.context)
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if err != nil {
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logger.Errorf("failed to delete object store %s. %+v", objectStore.Name, err)
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}
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}
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