39af760930
+ Remove unused variable in tests. + Use more common statement for interface conformance check. + Fix several comments in the framework plugins.
57 lines
1.8 KiB
Go
57 lines
1.8 KiB
Go
/*
|
|
Copyright 2019 The Kubernetes Authors.
|
|
|
|
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 prebind
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
|
|
v1 "k8s.io/api/core/v1"
|
|
"k8s.io/apimachinery/pkg/runtime"
|
|
framework "k8s.io/kubernetes/pkg/scheduler/framework/v1alpha1"
|
|
)
|
|
|
|
// StatelessPreBindExample is an example of a simple plugin that has no state
|
|
// and implements only one hook for prebind.
|
|
type StatelessPreBindExample struct{}
|
|
|
|
var _ framework.PreBindPlugin = StatelessPreBindExample{}
|
|
|
|
// Name is the name of the plugin used in Registry and configurations.
|
|
const Name = "stateless-prebind-plugin-example"
|
|
|
|
// Name returns name of the plugin. It is used in logs, etc.
|
|
func (sr StatelessPreBindExample) Name() string {
|
|
return Name
|
|
}
|
|
|
|
// PreBind is the functions invoked by the framework at "prebind" extension point.
|
|
func (sr StatelessPreBindExample) PreBind(ctx context.Context, state *framework.CycleState, pod *v1.Pod, nodeName string) *framework.Status {
|
|
if pod == nil {
|
|
return framework.NewStatus(framework.Error, fmt.Sprintf("pod cannot be nil"))
|
|
}
|
|
if pod.Namespace != "foo" {
|
|
return framework.NewStatus(framework.Unschedulable, "only pods from 'foo' namespace are allowed")
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// New initializes a new plugin and returns it.
|
|
func New(_ *runtime.Unknown, _ framework.FrameworkHandle) (framework.Plugin, error) {
|
|
return &StatelessPreBindExample{}, nil
|
|
}
|