/
misc.go
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/
misc.go
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// Copyright 2021 Chaos Mesh 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 stresschaos
import (
"encoding/json"
"fmt"
"io"
"net/http"
corev1 "k8s.io/api/core/v1"
metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
"k8s.io/klog/v2"
"github.com/chaos-mesh/chaos-mesh/api/v1alpha1"
)
func makeMemoryStressChaos(
namespace, name string,
podNs, podAppName string, memorySize string, worker int,
) *v1alpha1.StressChaos {
return &v1alpha1.StressChaos{
ObjectMeta: metav1.ObjectMeta{
Name: name,
Namespace: namespace,
},
Spec: v1alpha1.StressChaosSpec{
ContainerSelector: v1alpha1.ContainerSelector{
PodSelector: v1alpha1.PodSelector{
Mode: v1alpha1.AllMode,
Selector: v1alpha1.PodSelectorSpec{
GenericSelectorSpec: v1alpha1.GenericSelectorSpec{
Namespaces: []string{podNs},
LabelSelectors: map[string]string{
"app": podAppName,
},
},
},
},
},
Stressors: &v1alpha1.Stressors{
MemoryStressor: &v1alpha1.MemoryStressor{
Size: memorySize,
Stressor: v1alpha1.Stressor{Workers: worker},
},
},
},
}
}
func makeCPUStressChaos(
namespace, name string,
podNs, podAppName string, worker int, load int,
) *v1alpha1.StressChaos {
return &v1alpha1.StressChaos{
ObjectMeta: metav1.ObjectMeta{
Name: name,
Namespace: namespace,
},
Spec: v1alpha1.StressChaosSpec{
ContainerSelector: v1alpha1.ContainerSelector{
PodSelector: v1alpha1.PodSelector{
Mode: v1alpha1.AllMode,
Selector: v1alpha1.PodSelectorSpec{
GenericSelectorSpec: v1alpha1.GenericSelectorSpec{
Namespaces: []string{podNs},
LabelSelectors: map[string]string{
"app": podAppName,
},
},
},
},
},
Stressors: &v1alpha1.Stressors{
CPUStressor: &v1alpha1.CPUStressor{
Load: &load,
Stressor: v1alpha1.Stressor{Workers: worker},
},
},
},
}
}
type StressCondition struct {
CpuTime uint64 `json:"cpuTime"`
MemoryUsage uint64 `json:"memoryUsage"`
}
func getStressCondition(c http.Client, port uint16) (*StressCondition, error) {
klog.Infof("sending request to http://localhost:%d/stress", port)
resp, err := c.Get(fmt.Sprintf("http://localhost:%d/stress", port))
if err != nil {
return nil, err
}
defer resp.Body.Close()
out, err := io.ReadAll(resp.Body)
if err != nil {
return nil, err
}
condition := &StressCondition{}
err = json.Unmarshal(out, condition)
if err != nil {
return nil, err
}
return condition, nil
}
func probeStressCondition(
c http.Client, peers []*corev1.Pod, ports []uint16,
) (map[int]*StressCondition, error) {
stressConditions := make(map[int]*StressCondition)
for index, port := range ports {
stressCondition, err := getStressCondition(c, port)
if err != nil {
return nil, err
}
stressConditions[index] = stressCondition
}
return stressConditions, nil
}