/
fis_usecase.go
133 lines (122 loc) · 4.08 KB
/
fis_usecase.go
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package usecase
import (
"context"
"fmt"
"time"
"github.com/aws/aws-sdk-go-v2/aws"
"github.com/aws/aws-sdk-go-v2/service/fis"
"github.com/aws/aws-sdk-go-v2/service/fis/types"
"github.com/tae2089/fis-chaos/config"
"github.com/tae2089/fis-chaos/domain"
fisTypes "github.com/tae2089/fis-chaos/types"
)
type fisUseCasempl struct {
fisClient *fis.Client
contextTimeout time.Duration
}
func NewFisUseCase(fisClient *fis.Client, contextTimeout time.Duration) domain.FisUsecase {
return &fisUseCasempl{
fisClient: fisClient,
contextTimeout: contextTimeout,
}
}
func (f *fisUseCasempl) StartExperiment(ctx context.Context, experimentDto domain.ExperimentDto) error {
_, err := f.fisClient.StartExperiment(ctx, &fis.StartExperimentInput{
ExperimentTemplateId: aws.String(experimentDto.TemplateID),
Tags: map[string]string{
"Name": experimentDto.Name,
},
})
if err != nil {
return err
}
return nil
}
func (f *fisUseCasempl) CreateStressChaos(ctx context.Context, stressChaosDto domain.StressChaosDto) (string, error) {
_, cancel := context.WithTimeout(ctx, f.contextTimeout)
defer cancel()
chaosMeshCfg := config.GetChaosMeshCfg()
parameters := createChaosMeshParametes(chaosMeshCfg, fisTypes.Stresschaos, stressChaosDto.GetSpec())
templateID, err := f.createChaosMeshTemplate(stressChaosDto, parameters, chaosMeshCfg.KubernetesARN)
if err != nil {
return "", err
}
return templateID, nil
}
// CreatePodChaos implements domain.FisUsecase.
func (f *fisUseCasempl) CreatePodChaos(ctx context.Context, podChaos domain.PodChaosDto) (string, error) {
_, cancel := context.WithTimeout(ctx, f.contextTimeout)
defer cancel()
chaosMeshCfg := config.GetChaosMeshCfg()
parameters := createChaosMeshParametes(chaosMeshCfg, fisTypes.Stresschaos, podChaos.GetSpec())
templateID, err := f.createChaosMeshTemplate(podChaos, parameters, chaosMeshCfg.KubernetesARN)
if err != nil {
return "", err
}
return templateID, nil
}
func (f *fisUseCasempl) createChaosMeshTemplate(chaosReader domain.ChaosReaderable, params domain.ChaosMeshParameters, kubernetesARN string) (string, error) {
maxDuration, err := convertToTime(chaosReader.GetSec())
date := time.Now()
if err != nil {
return "", err
}
output, err := f.fisClient.CreateExperimentTemplate(context.Background(), &fis.CreateExperimentTemplateInput{
Tags: map[string]string{
"Name": chaosReader.GetExperimentName(),
},
Description: aws.String(chaosReader.GetExperimentName() + " - " + date.Format("2023-05-06")),
Actions: map[string]types.CreateExperimentTemplateActionInput{
chaosReader.GetExperimentName(): {
Description: aws.String(""),
ActionId: aws.String(fisTypes.InjectKubernetesCustomResource),
Parameters: map[string]string{
"maxDuration": maxDuration,
"kubernetesApiVersion": params.APIVersion,
"kubernetesKind": params.Kind,
"kubernetesNamespace": params.Namespace,
"kubernetesSpec": params.Spec,
},
Targets: map[string]string{
"Cluster": "k8s",
},
},
},
RoleArn: aws.String(params.RoleARN),
StopConditions: []types.CreateExperimentTemplateStopConditionInput{
{
Source: aws.String("none"),
},
},
Targets: map[string]types.CreateExperimentTemplateTargetInput{
"k8s": {
ResourceType: aws.String("aws:eks:cluster"),
SelectionMode: aws.String("ALL"),
ResourceArns: aws.ToStringSlice([]*string{aws.String(kubernetesARN)}),
},
},
})
if err != nil {
return "", err
}
return *output.ExperimentTemplate.Id, nil
}
func convertToTime(sec int) (string, error) {
fmt.Println(sec)
if sec < 60 || sec > 43200 {
return "", fmt.Errorf("Input is out of range. It should be between 1 and 43200")
}
hours := sec / 3600
minutes := (sec % 3600) / 60
seconds := sec % 60
return fmt.Sprintf("PT%02dH%02dM%02dS", hours, minutes, seconds), nil
}
func createChaosMeshParametes(cfg *config.ChaosMeshConfig, kind, spec string) domain.ChaosMeshParameters {
return domain.ChaosMeshParameters{
APIVersion: fisTypes.ChaosMeshAPIVersionV1alpha1,
Kind: kind,
Namespace: cfg.NameSpace,
Spec: spec,
RoleARN: cfg.RoleARN,
}
}