forked from rook/rook
subhamkrai
0fddfcf307
this commit handle golangci-lint linter errcheck. `errcheck` - Errcheck is a program for checking for unchecked errors in go programs. These unchecked errors can be critical bugs in some cases To see only staticcheck linter output `golangci-lint run --disable-all -E errcheck` Signed-off-by: subhamkrai <srai@redhat.com>
74 lines
2.2 KiB
Go
74 lines
2.2 KiB
Go
/*
|
|
Copyright 2020 The Rook Authors. All rights reserved.
|
|
|
|
Licensed under the Apache License, Version 2.0 (the "License");
|
|
you may not use this file except in compliance with the License.
|
|
You may obtain a copy of the License at
|
|
|
|
http://www.apache.org/licenses/LICENSE-2.0
|
|
|
|
Unless required by applicable law or agreed to in writing, software
|
|
distributed under the License is distributed on an "AS IS" BASIS,
|
|
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
See the License for the specific language governing permissions and
|
|
limitations under the License.
|
|
*/
|
|
|
|
// Package kit for Kubernetes operators
|
|
package k8sutil
|
|
|
|
import (
|
|
"k8s.io/apimachinery/pkg/fields"
|
|
"k8s.io/apimachinery/pkg/runtime"
|
|
"k8s.io/client-go/rest"
|
|
"k8s.io/client-go/tools/cache"
|
|
)
|
|
|
|
// CustomResource is for creating a Kubernetes TPR/CRD
|
|
type CustomResource struct {
|
|
// Name of the custom resource
|
|
Name string
|
|
|
|
// Plural of the custom resource in plural
|
|
Plural string
|
|
|
|
// Group the custom resource belongs to
|
|
Group string
|
|
|
|
// Version which should be defined in a const above
|
|
Version string
|
|
|
|
// Kind is the serialized interface of the resource.
|
|
Kind string
|
|
|
|
// APIVersion is the full API version name (combine Group and Version)
|
|
APIVersion string
|
|
}
|
|
|
|
// WatchCR begins watching the custom resource (CRD). The call will block until a Done signal is raised during in the context.
|
|
// When the watch has detected a create, update, or delete event, it will handled by the functions in the resourceEventHandlers. After the callback returns, the watch loop will continue for the next event.
|
|
// If the callback returns an error, the error will be logged.
|
|
func WatchCR(resource CustomResource, namespace string, handlers cache.ResourceEventHandlerFuncs, client rest.Interface, objType runtime.Object, done <-chan struct{}) {
|
|
source := cache.NewListWatchFromClient(
|
|
client,
|
|
resource.Plural,
|
|
namespace,
|
|
fields.Everything())
|
|
_, controller := cache.NewInformer(
|
|
source,
|
|
|
|
// The object type.
|
|
objType,
|
|
|
|
// resyncPeriod
|
|
// Every resyncPeriod, all resources in the cache will retrigger events.
|
|
// Set to 0 to disable the resync.
|
|
0,
|
|
|
|
// Your custom resource event handlers.
|
|
handlers)
|
|
|
|
go controller.Run(done)
|
|
<-done
|
|
}
|