kubernetes helpers_test 源码

2022-09-18
浏览 (522)

kubernetes helpers_test 代码

文件路径：/pkg/api/v1/resource/helpers_test.go

/*
Copyright 2015 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 resource

import (
	"testing"

	"github.com/stretchr/testify/assert"

	v1 "k8s.io/api/core/v1"
	"k8s.io/apimachinery/pkg/api/equality"
	"k8s.io/apimachinery/pkg/api/resource"
)

func TestResourceHelpers(t *testing.T) {
	cpuLimit := resource.MustParse("10")
	memoryLimit := resource.MustParse("10G")
	resourceSpec := v1.ResourceRequirements{
		Limits: v1.ResourceList{
			v1.ResourceCPU:    cpuLimit,
			v1.ResourceMemory: memoryLimit,
		},
	}
	if res := resourceSpec.Limits.Cpu(); res.Cmp(cpuLimit) != 0 {
		t.Errorf("expected cpulimit %v, got %v", cpuLimit, res)
	}
	if res := resourceSpec.Limits.Memory(); res.Cmp(memoryLimit) != 0 {
		t.Errorf("expected memorylimit %v, got %v", memoryLimit, res)
	}
	resourceSpec = v1.ResourceRequirements{
		Limits: v1.ResourceList{
			v1.ResourceMemory: memoryLimit,
		},
	}
	if res := resourceSpec.Limits.Cpu(); res.Value() != 0 {
		t.Errorf("expected cpulimit %v, got %v", 0, res)
	}
	if res := resourceSpec.Limits.Memory(); res.Cmp(memoryLimit) != 0 {
		t.Errorf("expected memorylimit %v, got %v", memoryLimit, res)
	}
}

func TestDefaultResourceHelpers(t *testing.T) {
	resourceList := v1.ResourceList{}
	if resourceList.Cpu().Format != resource.DecimalSI {
		t.Errorf("expected %v, actual %v", resource.DecimalSI, resourceList.Cpu().Format)
	}
	if resourceList.Memory().Format != resource.BinarySI {
		t.Errorf("expected %v, actual %v", resource.BinarySI, resourceList.Memory().Format)
	}
}

func TestGetResourceRequest(t *testing.T) {
	cases := []struct {
		pod           *v1.Pod
		cName         string
		resourceName  v1.ResourceName
		expectedValue int64
	}{
		{
			pod:           getPod("foo", podResources{cpuRequest: "9"}),
			resourceName:  v1.ResourceCPU,
			expectedValue: 9000,
		},
		{
			pod:           getPod("foo", podResources{memoryRequest: "90Mi"}),
			resourceName:  v1.ResourceMemory,
			expectedValue: 94371840,
		},
		{
			cName:         "just-overhead for cpu",
			pod:           getPod("foo", podResources{cpuOverhead: "5", memoryOverhead: "5"}),
			resourceName:  v1.ResourceCPU,
			expectedValue: 0,
		},
		{
			cName:         "just-overhead for memory",
			pod:           getPod("foo", podResources{memoryOverhead: "5"}),
			resourceName:  v1.ResourceMemory,
			expectedValue: 0,
		},
		{
			cName:         "cpu overhead and req",
			pod:           getPod("foo", podResources{cpuRequest: "2", cpuOverhead: "5", memoryOverhead: "5"}),
			resourceName:  v1.ResourceCPU,
			expectedValue: 7000,
		},
		{
			cName:         "mem overhead and req",
			pod:           getPod("foo", podResources{cpuRequest: "2", memoryRequest: "1024", cpuOverhead: "5", memoryOverhead: "5"}),
			resourceName:  v1.ResourceMemory,
			expectedValue: 1029,
		},
	}
	as := assert.New(t)
	for idx, tc := range cases {
		actual := GetResourceRequest(tc.pod, tc.resourceName)
		as.Equal(actual, tc.expectedValue, "expected test case [%d] %v: to return %q; got %q instead", idx, tc.cName, tc.expectedValue, actual)
	}
}

func TestExtractResourceValue(t *testing.T) {
	cases := []struct {
		fs            *v1.ResourceFieldSelector
		pod           *v1.Pod
		cName         string
		expectedValue string
		expectedError error
	}{
		{
			fs: &v1.ResourceFieldSelector{
				Resource: "limits.cpu",
			},
			cName:         "foo",
			pod:           getPod("foo", podResources{cpuLimit: "9"}),
			expectedValue: "9",
		},
		{
			fs: &v1.ResourceFieldSelector{
				Resource: "requests.cpu",
			},
			cName:         "foo",
			pod:           getPod("foo", podResources{}),
			expectedValue: "0",
		},
		{
			fs: &v1.ResourceFieldSelector{
				Resource: "requests.cpu",
			},
			cName:         "foo",
			pod:           getPod("foo", podResources{cpuRequest: "8"}),
			expectedValue: "8",
		},
		{
			fs: &v1.ResourceFieldSelector{
				Resource: "requests.cpu",
			},
			cName:         "foo",
			pod:           getPod("foo", podResources{cpuRequest: "100m"}),
			expectedValue: "1",
		},
		{
			fs: &v1.ResourceFieldSelector{
				Resource: "requests.cpu",
				Divisor:  resource.MustParse("100m"),
			},
			cName:         "foo",
			pod:           getPod("foo", podResources{cpuRequest: "1200m"}),
			expectedValue: "12",
		},
		{
			fs: &v1.ResourceFieldSelector{
				Resource: "requests.memory",
			},
			cName:         "foo",
			pod:           getPod("foo", podResources{memoryRequest: "100Mi"}),
			expectedValue: "104857600",
		},
		{
			fs: &v1.ResourceFieldSelector{
				Resource: "requests.memory",
				Divisor:  resource.MustParse("1Mi"),
			},
			cName:         "foo",
			pod:           getPod("foo", podResources{memoryRequest: "100Mi", memoryLimit: "1Gi"}),
			expectedValue: "100",
		},
		{
			fs: &v1.ResourceFieldSelector{
				Resource: "limits.memory",
			},
			cName:         "foo",
			pod:           getPod("foo", podResources{memoryRequest: "10Mi", memoryLimit: "100Mi"}),
			expectedValue: "104857600",
		},
		{
			fs: &v1.ResourceFieldSelector{
				Resource: "limits.cpu",
			},
			cName:         "init-foo",
			pod:           getPod("foo", podResources{cpuLimit: "9"}),
			expectedValue: "9",
		},
		{
			fs: &v1.ResourceFieldSelector{
				Resource: "requests.cpu",
			},
			cName:         "init-foo",
			pod:           getPod("foo", podResources{}),
			expectedValue: "0",
		},
		{
			fs: &v1.ResourceFieldSelector{
				Resource: "requests.cpu",
			},
			cName:         "init-foo",
			pod:           getPod("foo", podResources{cpuRequest: "8"}),
			expectedValue: "8",
		},
		{
			fs: &v1.ResourceFieldSelector{
				Resource: "requests.cpu",
			},
			cName:         "init-foo",
			pod:           getPod("foo", podResources{cpuRequest: "100m"}),
			expectedValue: "1",
		},
		{
			fs: &v1.ResourceFieldSelector{
				Resource: "requests.cpu",
				Divisor:  resource.MustParse("100m"),
			},
			cName:         "init-foo",
			pod:           getPod("foo", podResources{cpuRequest: "1200m"}),
			expectedValue: "12",
		},
		{
			fs: &v1.ResourceFieldSelector{
				Resource: "requests.memory",
			},
			cName:         "init-foo",
			pod:           getPod("foo", podResources{memoryRequest: "100Mi"}),
			expectedValue: "104857600",
		},
		{
			fs: &v1.ResourceFieldSelector{
				Resource: "requests.memory",
				Divisor:  resource.MustParse("1Mi"),
			},
			cName:         "init-foo",
			pod:           getPod("foo", podResources{memoryRequest: "100Mi", memoryLimit: "1Gi"}),
			expectedValue: "100",
		},
		{
			fs: &v1.ResourceFieldSelector{
				Resource: "limits.memory",
			},
			cName: "init-foo",
			pod:   getPod("foo", podResources{memoryRequest: "10Mi", memoryLimit: "100Mi"}),

			expectedValue: "104857600",
		},
	}
	as := assert.New(t)
	for idx, tc := range cases {
		actual, err := ExtractResourceValueByContainerName(tc.fs, tc.pod, tc.cName)
		if tc.expectedError != nil {
			as.Equal(tc.expectedError, err, "expected test case [%d] to fail with error %v; got %v", idx, tc.expectedError, err)
		} else {
			as.Nil(err, "expected test case [%d] to not return an error; got %v", idx, err)
			as.Equal(tc.expectedValue, actual, "expected test case [%d] to return %q; got %q instead", idx, tc.expectedValue, actual)
		}
	}
}

func TestPodRequestsAndLimits(t *testing.T) {
	cases := []struct {
		pod              *v1.Pod
		cName            string
		expectedRequests v1.ResourceList
		expectedLimits   v1.ResourceList
	}{
		{
			cName:            "just-limit-no-overhead",
			pod:              getPod("foo", podResources{cpuLimit: "9"}),
			expectedRequests: v1.ResourceList{},
			expectedLimits: v1.ResourceList{
				v1.ResourceName(v1.ResourceCPU): resource.MustParse("9"),
			},
		},
		{
			cName: "just-overhead",
			pod:   getPod("foo", podResources{cpuOverhead: "5", memoryOverhead: "5"}),
			expectedRequests: v1.ResourceList{
				v1.ResourceName(v1.ResourceCPU):    resource.MustParse("5"),
				v1.ResourceName(v1.ResourceMemory): resource.MustParse("5"),
			},
			expectedLimits: v1.ResourceList{},
		},
		{
			cName: "req-and-overhead",
			pod:   getPod("foo", podResources{cpuRequest: "1", memoryRequest: "10", cpuOverhead: "5", memoryOverhead: "5"}),
			expectedRequests: v1.ResourceList{
				v1.ResourceName(v1.ResourceCPU):    resource.MustParse("6"),
				v1.ResourceName(v1.ResourceMemory): resource.MustParse("15"),
			},
			expectedLimits: v1.ResourceList{},
		},
		{
			cName: "all-req-lim-and-overhead",
			pod:   getPod("foo", podResources{cpuRequest: "1", cpuLimit: "2", memoryRequest: "10", memoryLimit: "12", cpuOverhead: "5", memoryOverhead: "5"}),
			expectedRequests: v1.ResourceList{
				v1.ResourceName(v1.ResourceCPU):    resource.MustParse("6"),
				v1.ResourceName(v1.ResourceMemory): resource.MustParse("15"),
			},
			expectedLimits: v1.ResourceList{
				v1.ResourceName(v1.ResourceCPU):    resource.MustParse("7"),
				v1.ResourceName(v1.ResourceMemory): resource.MustParse("17"),
			},
		},
		{
			cName: "req-some-lim-and-overhead",
			pod:   getPod("foo", podResources{cpuRequest: "1", cpuLimit: "2", memoryRequest: "10", cpuOverhead: "5", memoryOverhead: "5"}),
			expectedRequests: v1.ResourceList{
				v1.ResourceName(v1.ResourceCPU):    resource.MustParse("6"),
				v1.ResourceName(v1.ResourceMemory): resource.MustParse("15"),
			},
			expectedLimits: v1.ResourceList{
				v1.ResourceName(v1.ResourceCPU): resource.MustParse("7"),
			},
		},
	}
	for idx, tc := range cases {
		resRequests, resLimits := PodRequestsAndLimits(tc.pod)

		if !equality.Semantic.DeepEqual(tc.expectedRequests, resRequests) {
			t.Errorf("test case failure[%d]: %v, requests:\n expected:\t%v\ngot\t\t%v", idx, tc.cName, tc.expectedRequests, resRequests)
		}

		if !equality.Semantic.DeepEqual(tc.expectedLimits, resLimits) {
			t.Errorf("test case failure[%d]: %v, limits:\n expected:\t%v\ngot\t\t%v", idx, tc.cName, tc.expectedLimits, resLimits)
		}
	}
}

func TestPodRequestsAndLimitsWithoutOverhead(t *testing.T) {
	cases := []struct {
		pod              *v1.Pod
		name             string
		expectedRequests v1.ResourceList
		expectedLimits   v1.ResourceList
	}{
		{
			name: "two container no overhead - should just be sum of containers",
			pod: &v1.Pod{
				Spec: v1.PodSpec{
					Containers: []v1.Container{
						{
							Name: "foobar",
							Resources: v1.ResourceRequirements{
								Requests: v1.ResourceList{
									v1.ResourceName(v1.ResourceCPU):    resource.MustParse("1"),
									v1.ResourceName(v1.ResourceMemory): resource.MustParse("5"),
								},
								Limits: v1.ResourceList{
									v1.ResourceName(v1.ResourceCPU):    resource.MustParse("2"),
									v1.ResourceName(v1.ResourceMemory): resource.MustParse("10"),
								},
							},
						},
						{
							Name: "foobar2",
							Resources: v1.ResourceRequirements{
								Requests: v1.ResourceList{
									v1.ResourceName(v1.ResourceCPU):    resource.MustParse("4"),
									v1.ResourceName(v1.ResourceMemory): resource.MustParse("12"),
								},
								Limits: v1.ResourceList{
									v1.ResourceName(v1.ResourceCPU):    resource.MustParse("8"),
									v1.ResourceName(v1.ResourceMemory): resource.MustParse("24"),
								},
							},
						},
					},
				},
			},
			expectedRequests: v1.ResourceList{
				v1.ResourceName(v1.ResourceCPU):    resource.MustParse("5"),
				v1.ResourceName(v1.ResourceMemory): resource.MustParse("17"),
			},
			expectedLimits: v1.ResourceList{
				v1.ResourceName(v1.ResourceCPU):    resource.MustParse("10"),
				v1.ResourceName(v1.ResourceMemory): resource.MustParse("34"),
			},
		},
		{
			name: "two container with overhead - shouldn't consider overhead",
			pod: &v1.Pod{
				Spec: v1.PodSpec{
					Overhead: v1.ResourceList{
						v1.ResourceName(v1.ResourceCPU):    resource.MustParse("3"),
						v1.ResourceName(v1.ResourceMemory): resource.MustParse("8"),
					},
					Containers: []v1.Container{
						{
							Name: "foobar",
							Resources: v1.ResourceRequirements{
								Requests: v1.ResourceList{
									v1.ResourceName(v1.ResourceCPU):    resource.MustParse("1"),
									v1.ResourceName(v1.ResourceMemory): resource.MustParse("5"),
								},
								Limits: v1.ResourceList{
									v1.ResourceName(v1.ResourceCPU):    resource.MustParse("2"),
									v1.ResourceName(v1.ResourceMemory): resource.MustParse("10"),
								},
							},
						},
						{
							Name: "foobar2",
							Resources: v1.ResourceRequirements{
								Requests: v1.ResourceList{
									v1.ResourceName(v1.ResourceCPU):    resource.MustParse("4"),
									v1.ResourceName(v1.ResourceMemory): resource.MustParse("12"),
								},
								Limits: v1.ResourceList{
									v1.ResourceName(v1.ResourceCPU):    resource.MustParse("8"),
									v1.ResourceName(v1.ResourceMemory): resource.MustParse("24"),
								},
							},
						},
					},
				},
			},
			expectedRequests: v1.ResourceList{
				v1.ResourceName(v1.ResourceCPU):    resource.MustParse("5"),
				v1.ResourceName(v1.ResourceMemory): resource.MustParse("17"),
			},
			expectedLimits: v1.ResourceList{
				v1.ResourceName(v1.ResourceCPU):    resource.MustParse("10"),
				v1.ResourceName(v1.ResourceMemory): resource.MustParse("34"),
			},
		},
		{
			name: "two container with overhead, massive init - should just be the largest init",
			pod: &v1.Pod{
				Spec: v1.PodSpec{
					Overhead: v1.ResourceList{
						v1.ResourceName(v1.ResourceCPU):    resource.MustParse("3"),
						v1.ResourceName(v1.ResourceMemory): resource.MustParse("8"),
					},
					Containers: []v1.Container{
						{
							Name: "foobar",
							Resources: v1.ResourceRequirements{
								Requests: v1.ResourceList{
									v1.ResourceName(v1.ResourceCPU):    resource.MustParse("1"),
									v1.ResourceName(v1.ResourceMemory): resource.MustParse("5"),
								},
								Limits: v1.ResourceList{
									v1.ResourceName(v1.ResourceCPU):    resource.MustParse("2"),
									v1.ResourceName(v1.ResourceMemory): resource.MustParse("10"),
								},
							},
						},
						{
							Name: "foobar2",
							Resources: v1.ResourceRequirements{
								Requests: v1.ResourceList{
									v1.ResourceName(v1.ResourceCPU):    resource.MustParse("4"),
									v1.ResourceName(v1.ResourceMemory): resource.MustParse("12"),
								},
								Limits: v1.ResourceList{
									v1.ResourceName(v1.ResourceCPU):    resource.MustParse("8"),
									v1.ResourceName(v1.ResourceMemory): resource.MustParse("24"),
								},
							},
						},
					},
					InitContainers: []v1.Container{
						{
							Name: "small-init",
							Resources: v1.ResourceRequirements{
								Requests: v1.ResourceList{
									v1.ResourceName(v1.ResourceCPU):    resource.MustParse("1"),
									v1.ResourceName(v1.ResourceMemory): resource.MustParse("5"),
								},
								Limits: v1.ResourceList{
									v1.ResourceName(v1.ResourceCPU):    resource.MustParse("1"),
									v1.ResourceName(v1.ResourceMemory): resource.MustParse("5"),
								},
							},
						},
						{
							Name: "big-init",
							Resources: v1.ResourceRequirements{
								Requests: v1.ResourceList{
									v1.ResourceName(v1.ResourceCPU):    resource.MustParse("40"),
									v1.ResourceName(v1.ResourceMemory): resource.MustParse("120"),
								},
								Limits: v1.ResourceList{
									v1.ResourceName(v1.ResourceCPU):    resource.MustParse("80"),
									v1.ResourceName(v1.ResourceMemory): resource.MustParse("240"),
								},
							},
						},
					},
				},
			},
			expectedRequests: v1.ResourceList{
				v1.ResourceName(v1.ResourceCPU):    resource.MustParse("40"),
				v1.ResourceName(v1.ResourceMemory): resource.MustParse("120"),
			},
			expectedLimits: v1.ResourceList{
				v1.ResourceName(v1.ResourceCPU):    resource.MustParse("80"),
				v1.ResourceName(v1.ResourceMemory): resource.MustParse("240"),
			},
		},
	}
	for idx, tc := range cases {
		resRequests, resLimits := PodRequestsAndLimitsWithoutOverhead(tc.pod)

		if !equality.Semantic.DeepEqual(tc.expectedRequests, resRequests) {
			t.Errorf("test case failure[%d]: %v, requests:\n expected:\t%v\ngot\t\t%v", idx, tc.name, tc.expectedRequests, resRequests)
		}

		if !equality.Semantic.DeepEqual(tc.expectedLimits, resLimits) {
			t.Errorf("test case failure[%d]: %v, limits:\n expected:\t%v\ngot\t\t%v", idx, tc.name, tc.expectedLimits, resLimits)
		}
	}
}

type podResources struct {
	cpuRequest, cpuLimit, memoryRequest, memoryLimit, cpuOverhead, memoryOverhead string
}

func getPod(cname string, resources podResources) *v1.Pod {
	r := v1.ResourceRequirements{
		Limits:   make(v1.ResourceList),
		Requests: make(v1.ResourceList),
	}

	overhead := make(v1.ResourceList)

	if resources.cpuLimit != "" {
		r.Limits[v1.ResourceCPU] = resource.MustParse(resources.cpuLimit)
	}
	if resources.memoryLimit != "" {
		r.Limits[v1.ResourceMemory] = resource.MustParse(resources.memoryLimit)
	}
	if resources.cpuRequest != "" {
		r.Requests[v1.ResourceCPU] = resource.MustParse(resources.cpuRequest)
	}
	if resources.memoryRequest != "" {
		r.Requests[v1.ResourceMemory] = resource.MustParse(resources.memoryRequest)
	}
	if resources.cpuOverhead != "" {
		overhead[v1.ResourceCPU] = resource.MustParse(resources.cpuOverhead)
	}
	if resources.memoryOverhead != "" {
		overhead[v1.ResourceMemory] = resource.MustParse(resources.memoryOverhead)
	}

	return &v1.Pod{
		Spec: v1.PodSpec{
			Containers: []v1.Container{
				{
					Name:      cname,
					Resources: r,
				},
			},
			InitContainers: []v1.Container{
				{
					Name:      "init-" + cname,
					Resources: r,
				},
			},
			Overhead: overhead,
		},
	}
}

相关信息

kubernetes 源码目录

相关文章

kubernetes helpers 源码

0 赞

所属分类： 后端技术
本文标签： golang docker
版权声明： 原创文章如转载，请注明本文链接: https://www.seaxiang.com/blog/368a7e83e9604a5184814fb5c830ae9d

热门推荐

1、直接访问google.com
2、 - 优质文章
3、 gate.io
4、 harmony 鸿蒙hdc使用指导
5、 harmony 鸿蒙初识ArkTS语言
6、 harmony 鸿蒙ArkUI组件（ArkTS）开发常见问题
7、 flink kafka connector scan.startup.mode 的几个选项
8、 golang
9、 openharmony
10、 Vue中input框自动聚焦

Loading...