kubernetes fake_client 源码

kubernetes fake_client 代码

文件路径：/staging/src/k8s.io/metrics/pkg/client/custom_metrics/fake/fake_client.go

/*
Copyright 2017 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 fake

import (
	"fmt"

	"k8s.io/apimachinery/pkg/api/meta"
	"k8s.io/apimachinery/pkg/labels"
	"k8s.io/apimachinery/pkg/runtime/schema"
	"k8s.io/client-go/testing"
	"k8s.io/metrics/pkg/apis/custom_metrics/v1beta2"
	cmclient "k8s.io/metrics/pkg/client/custom_metrics"
)

type GetForActionImpl struct {
	testing.GetAction
	MetricName    string
	LabelSelector labels.Selector
}

type GetForAction interface {
	testing.GetAction
	GetMetricName() string
	GetLabelSelector() labels.Selector
}

func (i GetForActionImpl) GetMetricName() string {
	return i.MetricName
}

func (i GetForActionImpl) GetLabelSelector() labels.Selector {
	return i.LabelSelector
}

func (i GetForActionImpl) GetSubresource() string {
	return i.MetricName
}

func (i GetForActionImpl) DeepCopy() testing.Action {
	var labelSelector labels.Selector
	if i.LabelSelector != nil {
		labelSelector = i.LabelSelector.DeepCopySelector()
	}
	return GetForActionImpl{
		GetAction:     i.GetAction.DeepCopy().(testing.GetAction),
		MetricName:    i.MetricName,
		LabelSelector: labelSelector,
	}
}

func NewGetForAction(groupKind schema.GroupKind, namespace, name string, metricName string, labelSelector labels.Selector) GetForActionImpl {
	// the version doesn't matter
	gvk := groupKind.WithVersion("")
	gvr, _ := meta.UnsafeGuessKindToResource(gvk)
	groupResourceForKind := schema.GroupResource{
		Group:    gvr.Group,
		Resource: gvr.Resource,
	}
	resource := schema.GroupResource{
		Group:    v1beta2.SchemeGroupVersion.Group,
		Resource: groupResourceForKind.String(),
	}
	return GetForActionImpl{
		GetAction:     testing.NewGetAction(resource.WithVersion(""), namespace, name),
		MetricName:    metricName,
		LabelSelector: labelSelector,
	}
}

func NewRootGetForAction(groupKind schema.GroupKind, name string, metricName string, labelSelector labels.Selector) GetForActionImpl {
	// the version doesn't matter
	gvk := groupKind.WithVersion("")
	gvr, _ := meta.UnsafeGuessKindToResource(gvk)
	groupResourceForKind := schema.GroupResource{
		Group:    gvr.Group,
		Resource: gvr.Resource,
	}
	resource := schema.GroupResource{
		Group:    v1beta2.SchemeGroupVersion.Group,
		Resource: groupResourceForKind.String(),
	}
	return GetForActionImpl{
		GetAction:     testing.NewRootGetAction(resource.WithVersion(""), name),
		MetricName:    metricName,
		LabelSelector: labelSelector,
	}
}

type FakeCustomMetricsClient struct {
	testing.Fake
}

func (c *FakeCustomMetricsClient) RootScopedMetrics() cmclient.MetricsInterface {
	return &fakeRootScopedMetrics{
		Fake: c,
	}
}

func (c *FakeCustomMetricsClient) NamespacedMetrics(namespace string) cmclient.MetricsInterface {
	return &fakeNamespacedMetrics{
		Fake: c,
		ns:   namespace,
	}
}

type fakeNamespacedMetrics struct {
	Fake *FakeCustomMetricsClient
	ns   string
}

func (m *fakeNamespacedMetrics) GetForObject(groupKind schema.GroupKind, name string, metricName string, metricSelector labels.Selector) (*v1beta2.MetricValue, error) {
	obj, err := m.Fake.
		Invokes(NewGetForAction(groupKind, m.ns, name, metricName, nil), &v1beta2.MetricValueList{})

	if obj == nil {
		return nil, err
	}

	objList := obj.(*v1beta2.MetricValueList)
	if len(objList.Items) != 1 {
		return nil, fmt.Errorf("the custom metrics API server returned %v results when we asked for exactly one", len(objList.Items))
	}

	return &objList.Items[0], err
}

func (m *fakeNamespacedMetrics) GetForObjects(groupKind schema.GroupKind, selector labels.Selector, metricName string, metricSelector labels.Selector) (*v1beta2.MetricValueList, error) {
	obj, err := m.Fake.
		Invokes(NewGetForAction(groupKind, m.ns, "*", metricName, selector), &v1beta2.MetricValueList{})

	if obj == nil {
		return nil, err
	}

	return obj.(*v1beta2.MetricValueList), err
}

type fakeRootScopedMetrics struct {
	Fake *FakeCustomMetricsClient
}

func (m *fakeRootScopedMetrics) GetForObject(groupKind schema.GroupKind, name string, metricName string, metricSelector labels.Selector) (*v1beta2.MetricValue, error) {
	obj, err := m.Fake.
		Invokes(NewRootGetForAction(groupKind, name, metricName, nil), &v1beta2.MetricValueList{})

	if obj == nil {
		return nil, err
	}

	objList := obj.(*v1beta2.MetricValueList)
	if len(objList.Items) != 1 {
		return nil, fmt.Errorf("the custom metrics API server returned %v results when we asked for exactly one", len(objList.Items))
	}

	return &objList.Items[0], err
}

func (m *fakeRootScopedMetrics) GetForObjects(groupKind schema.GroupKind, selector labels.Selector, metricName string, metricSelector labels.Selector) (*v1beta2.MetricValueList, error) {
	obj, err := m.Fake.
		Invokes(NewRootGetForAction(groupKind, "*", metricName, selector), &v1beta2.MetricValueList{})

	if obj == nil {
		return nil, err
	}

	return obj.(*v1beta2.MetricValueList), err
}

相关信息

kubernetes 源码目录

相关文章

kubernetes wincat 源码

kubernetes tools 源码

kubernetes apiserver_etcd_test 源码

kubernetes apiserver_kms_test 源码

kubernetes append_or_replace_prefixed_line_test 源码

kubernetes audit_policy_test 源码

kubernetes configure_helper_test 源码

kubernetes mounter 源码

kubernetes cp 源码

kubernetes copy_file 源码