mirror of https://github.com/k3s-io/k3s
Use structured generator for kubectl autoscale
wackxu
parent
dcdb423ef4
commit
d246cf3864
|
|
@ -18,98 +18,69 @@ package kubectl
|
|||
|
||||
import (
|
||||
"fmt"
|
||||
"strconv"
|
||||
|
||||
autoscalingv1 "k8s.io/api/autoscaling/v1"
|
||||
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
|
||||
"k8s.io/apimachinery/pkg/runtime"
|
||||
)
|
||||
|
||||
type HorizontalPodAutoscalerV1 struct{}
|
||||
|
||||
func (HorizontalPodAutoscalerV1) ParamNames() []GeneratorParam {
|
||||
return []GeneratorParam{
|
||||
{"default-name", true},
|
||||
{"name", false},
|
||||
{"scaleRef-kind", false},
|
||||
{"scaleRef-name", false},
|
||||
{"scaleRef-apiVersion", false},
|
||||
{"min", false},
|
||||
{"max", true},
|
||||
{"cpu-percent", false},
|
||||
}
|
||||
// HorizontalPodAutoscalerV1Generator supports stable generation of a horizontal pod autoscaler.
|
||||
type HorizontalPodAutoscalerGeneratorV1 struct {
|
||||
Name string
|
||||
ScaleRefKind string
|
||||
ScaleRefName string
|
||||
ScaleRefApiVersion string
|
||||
MinReplicas int32
|
||||
MaxReplicas int32
|
||||
CPUPercent int32
|
||||
}
|
||||
|
||||
func (HorizontalPodAutoscalerV1) Generate(genericParams map[string]interface{}) (runtime.Object, error) {
|
||||
return generateHPA(genericParams)
|
||||
}
|
||||
// Ensure it supports the generator pattern that uses parameters specified during construction.
|
||||
var _ StructuredGenerator = &HorizontalPodAutoscalerGeneratorV1{}
|
||||
|
||||
func generateHPA(genericParams map[string]interface{}) (runtime.Object, error) {
|
||||
params := map[string]string{}
|
||||
for key, value := range genericParams {
|
||||
strVal, isString := value.(string)
|
||||
if !isString {
|
||||
return nil, fmt.Errorf("expected string, saw %v for '%s'", value, key)
|
||||
}
|
||||
params[key] = strVal
|
||||
}
|
||||
|
||||
name, found := params["name"]
|
||||
if !found || len(name) == 0 {
|
||||
name, found = params["default-name"]
|
||||
if !found || len(name) == 0 {
|
||||
return nil, fmt.Errorf("'name' is a required parameter.")
|
||||
}
|
||||
}
|
||||
minString, found := params["min"]
|
||||
min := -1
|
||||
var err error
|
||||
if found {
|
||||
if min, err = strconv.Atoi(minString); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
maxString, found := params["max"]
|
||||
if !found {
|
||||
return nil, fmt.Errorf("'max' is a required parameter.")
|
||||
}
|
||||
max, err := strconv.Atoi(maxString)
|
||||
if err != nil {
|
||||
// StructuredGenerate outputs a horizontal pod autoscaler object using the configured fields.
|
||||
func (s *HorizontalPodAutoscalerGeneratorV1) StructuredGenerate() (runtime.Object, error) {
|
||||
if err := s.validate(); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
|
||||
if min > max {
|
||||
return nil, fmt.Errorf("'max' must be greater than or equal to 'min'.")
|
||||
}
|
||||
|
||||
cpuString, found := params["cpu-percent"]
|
||||
cpu := -1
|
||||
if found {
|
||||
if cpu, err = strconv.Atoi(cpuString); err != nil {
|
||||
return nil, err
|
||||
}
|
||||
}
|
||||
|
||||
scaler := autoscalingv1.HorizontalPodAutoscaler{
|
||||
ObjectMeta: metav1.ObjectMeta{
|
||||
Name: name,
|
||||
Name: s.Name,
|
||||
},
|
||||
Spec: autoscalingv1.HorizontalPodAutoscalerSpec{
|
||||
ScaleTargetRef: autoscalingv1.CrossVersionObjectReference{
|
||||
Kind: params["scaleRef-kind"],
|
||||
Name: params["scaleRef-name"],
|
||||
APIVersion: params["scaleRef-apiVersion"],
|
||||
Kind: s.ScaleRefKind,
|
||||
Name: s.ScaleRefName,
|
||||
APIVersion: s.ScaleRefApiVersion,
|
||||
},
|
||||
MaxReplicas: int32(max),
|
||||
MaxReplicas: s.MaxReplicas,
|
||||
},
|
||||
}
|
||||
if min > 0 {
|
||||
v := int32(min)
|
||||
|
||||
if s.MinReplicas > 0 {
|
||||
v := int32(s.MinReplicas)
|
||||
scaler.Spec.MinReplicas = &v
|
||||
}
|
||||
if cpu >= 0 {
|
||||
c := int32(cpu)
|
||||
if s.CPUPercent >= 0 {
|
||||
c := int32(s.CPUPercent)
|
||||
scaler.Spec.TargetCPUUtilizationPercentage = &c
|
||||
}
|
||||
|
||||
return &scaler, nil
|
||||
}
|
||||
|
||||
// validate check if the caller has set the right fields.
|
||||
func (s HorizontalPodAutoscalerGeneratorV1) validate() error {
|
||||
if len(s.Name) == 0 {
|
||||
return fmt.Errorf("name must be specified")
|
||||
}
|
||||
if s.MaxReplicas <= 0 {
|
||||
return fmt.Errorf("'max' is a required parameter and must be greater than zero")
|
||||
}
|
||||
if s.MinReplicas > s.MaxReplicas {
|
||||
return fmt.Errorf("'max' must be greater than or equal to 'min'")
|
||||
}
|
||||
return nil
|
||||
}
|
||||
|
||||
|
|
|
|||
|
|
@ -26,22 +26,26 @@ import (
|
|||
|
||||
func TestHPAGenerate(t *testing.T) {
|
||||
tests := []struct {
|
||||
name string
|
||||
params map[string]interface{}
|
||||
expected *autoscalingv1.HorizontalPodAutoscaler
|
||||
expectErr bool
|
||||
name string
|
||||
HPAName string
|
||||
scaleRefKind string
|
||||
scaleRefName string
|
||||
scaleRefApiVersion string
|
||||
minReplicas int32
|
||||
maxReplicas int32
|
||||
CPUPercent int32
|
||||
expected *autoscalingv1.HorizontalPodAutoscaler
|
||||
expectErr bool
|
||||
}{
|
||||
{
|
||||
name: "valid case",
|
||||
params: map[string]interface{}{
|
||||
"name": "foo",
|
||||
"min": "1",
|
||||
"max": "10",
|
||||
"cpu-percent": "80",
|
||||
"scaleRef-kind": "kind",
|
||||
"scaleRef-name": "name",
|
||||
"scaleRef-apiVersion": "apiVersion",
|
||||
},
|
||||
name: "valid case",
|
||||
HPAName: "foo",
|
||||
minReplicas: 1,
|
||||
maxReplicas: 10,
|
||||
CPUPercent: 80,
|
||||
scaleRefKind: "kind",
|
||||
scaleRefName: "name",
|
||||
scaleRefApiVersion: "apiVersion",
|
||||
expected: &autoscalingv1.HorizontalPodAutoscaler{
|
||||
ObjectMeta: metav1.ObjectMeta{
|
||||
Name: "foo",
|
||||
|
|
@ -60,79 +64,53 @@ func TestHPAGenerate(t *testing.T) {
|
|||
expectErr: false,
|
||||
},
|
||||
{
|
||||
name: "'name' is a required parameter",
|
||||
params: map[string]interface{}{
|
||||
"scaleRef-kind": "kind",
|
||||
"scaleRef-name": "name",
|
||||
"scaleRef-apiVersion": "apiVersion",
|
||||
},
|
||||
expectErr: true,
|
||||
name: "'name' is a required parameter",
|
||||
scaleRefKind: "kind",
|
||||
scaleRefName: "name",
|
||||
scaleRefApiVersion: "apiVersion",
|
||||
expectErr: true,
|
||||
},
|
||||
{
|
||||
name: "'max' is a required parameter",
|
||||
params: map[string]interface{}{
|
||||
"default-name": "foo",
|
||||
"scaleRef-kind": "kind",
|
||||
"scaleRef-name": "name",
|
||||
"scaleRef-apiVersion": "apiVersion",
|
||||
},
|
||||
expectErr: true,
|
||||
name: "'max' is a required parameter",
|
||||
HPAName: "foo",
|
||||
scaleRefKind: "kind",
|
||||
scaleRefName: "name",
|
||||
scaleRefApiVersion: "apiVersion",
|
||||
expectErr: true,
|
||||
},
|
||||
{
|
||||
name: "'max' must be greater than or equal to 'min'",
|
||||
params: map[string]interface{}{
|
||||
"name": "foo",
|
||||
"min": "10",
|
||||
"max": "1",
|
||||
"scaleRef-kind": "kind",
|
||||
"scaleRef-name": "name",
|
||||
"scaleRef-apiVersion": "apiVersion",
|
||||
},
|
||||
expectErr: true,
|
||||
name: "'max' must be greater than or equal to 'min'",
|
||||
HPAName: "foo",
|
||||
minReplicas: 10,
|
||||
maxReplicas: 1,
|
||||
scaleRefKind: "kind",
|
||||
scaleRefName: "name",
|
||||
scaleRefApiVersion: "apiVersion",
|
||||
expectErr: true,
|
||||
},
|
||||
{
|
||||
name: "cpu-percent must be an integer if specified",
|
||||
params: map[string]interface{}{
|
||||
"name": "foo",
|
||||
"min": "1",
|
||||
"max": "10",
|
||||
"cpu-percent": "",
|
||||
"scaleRef-kind": "kind",
|
||||
"scaleRef-name": "name",
|
||||
"scaleRef-apiVersion": "apiVersion",
|
||||
},
|
||||
expectErr: true,
|
||||
},
|
||||
{
|
||||
name: "'min' must be an integer if specified",
|
||||
params: map[string]interface{}{
|
||||
"name": "foo",
|
||||
"min": "foo",
|
||||
"max": "10",
|
||||
"cpu-percent": "60",
|
||||
"scaleRef-kind": "kind",
|
||||
"scaleRef-name": "name",
|
||||
"scaleRef-apiVersion": "apiVersion",
|
||||
},
|
||||
expectErr: true,
|
||||
},
|
||||
{
|
||||
name: "'max' must be an integer if specified",
|
||||
params: map[string]interface{}{
|
||||
"name": "foo",
|
||||
"min": "1",
|
||||
"max": "bar",
|
||||
"cpu-percent": "90",
|
||||
"scaleRef-kind": "kind",
|
||||
"scaleRef-name": "name",
|
||||
"scaleRef-apiVersion": "apiVersion",
|
||||
},
|
||||
expectErr: true,
|
||||
name: "'max' must be greater than zero",
|
||||
HPAName: "foo",
|
||||
minReplicas: 1,
|
||||
maxReplicas: -10,
|
||||
scaleRefKind: "kind",
|
||||
scaleRefName: "name",
|
||||
scaleRefApiVersion: "apiVersion",
|
||||
expectErr: true,
|
||||
},
|
||||
}
|
||||
generator := HorizontalPodAutoscalerV1{}
|
||||
|
||||
for _, test := range tests {
|
||||
obj, err := generator.Generate(test.params)
|
||||
generator := HorizontalPodAutoscalerGeneratorV1{
|
||||
Name: test.HPAName,
|
||||
ScaleRefKind: test.scaleRefKind,
|
||||
ScaleRefName: test.scaleRefName,
|
||||
ScaleRefApiVersion: test.scaleRefApiVersion,
|
||||
MinReplicas: test.minReplicas,
|
||||
MaxReplicas: test.maxReplicas,
|
||||
CPUPercent: test.CPUPercent,
|
||||
}
|
||||
obj, err := generator.StructuredGenerate()
|
||||
if test.expectErr && err != nil {
|
||||
continue
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in New Issue