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loader.go
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loader.go
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package loadtest
import (
"context"
"encoding/base64"
"errors"
"fmt"
"io"
"net/http"
"os"
"time"
"github.com/deepmap/oapi-codegen/pkg/securityprovider"
"github.com/google/uuid"
"github.com/jedib0t/go-pretty/text"
"github.com/schollz/progressbar/v3"
vegeta "github.com/tsenart/vegeta/v12/lib"
"github.com/treeverse/lakefs/pkg/api"
"github.com/treeverse/lakefs/pkg/auth/model"
"github.com/treeverse/lakefs/pkg/logging"
)
type Loader struct {
Reader *io.PipeReader
Writer *io.PipeWriter
Config Config
NewRepoName string
Metrics map[string]*vegeta.Metrics
TotalMetrics *vegeta.Metrics
}
type Config struct {
FreqPerSecond int
Duration time.Duration
MaxWorkers uint64
RepoName string
StorageNamespace string
KeepRepo bool
Credentials model.Credential
ServerAddress string
}
var (
ErrCreateClient = errors.New("failed to create lakeFS client")
ErrTestErrors = errors.New("got errors during loadtest, see output for details")
ErrRepositoryCreateFailed = errors.New("repository create failed")
ErrRepositoryDeleteFailed = errors.New("repository delete failed")
)
func NewLoader(config Config) *Loader {
reader, writer := io.Pipe()
res := &Loader{
Config: config,
Reader: reader,
Writer: writer,
}
return res
}
func (t *Loader) Run() error {
apiClient, err := t.getClient()
if err != nil {
return err
}
repoName, err := t.createRepo(apiClient)
if err != nil {
return err
}
stopCh := make(chan struct{})
progressBar(t.Config.Duration)
out := new(SimpleScenario).Play(t.Config.ServerAddress, repoName, stopCh)
errs := t.streamRequests(out)
hasErrors := t.doAttack()
close(stopCh)
_ = t.Writer.Close()
_ = t.Reader.Close()
if t.Config.RepoName == "" && !t.Config.KeepRepo {
ctx := context.Background()
resp, err := apiClient.DeleteRepositoryWithResponse(ctx, t.NewRepoName)
if err != nil {
return err
}
if resp.HTTPResponse.StatusCode != http.StatusNoContent {
return fmt.Errorf("%w: %s (%d)", ErrRepositoryDeleteFailed, resp.HTTPResponse.Status, resp.HTTPResponse.StatusCode)
}
}
for err := range errs {
if errors.Is(err, io.ErrClosedPipe) {
continue
}
logging.Default().WithError(err).Error("error during request pipeline")
return err
}
err = printResults(t.Metrics, t.TotalMetrics)
if err != nil {
return err
}
if hasErrors {
return ErrTestErrors
}
return nil
}
func (t *Loader) createRepo(apiClient api.ClientWithResponsesInterface) (string, error) {
if t.Config.RepoName != "" {
// using an existing repo, no need to create one
return t.Config.RepoName, nil
}
t.NewRepoName = uuid.New().String()
ctx := context.Background()
resp, err := apiClient.CreateRepositoryWithResponse(ctx, &api.CreateRepositoryParams{}, api.CreateRepositoryJSONRequestBody{
DefaultBranch: api.StringPtr("main"),
Name: t.NewRepoName,
StorageNamespace: t.Config.StorageNamespace,
})
if err != nil {
return "", fmt.Errorf("failed to create lakeFS repository '%s' (%s): %w", t.NewRepoName, t.Config.StorageNamespace, err)
}
if resp.HTTPResponse.StatusCode != http.StatusCreated {
return "", fmt.Errorf("%w: %s (%d)", ErrRepositoryCreateFailed, resp.HTTPResponse.Status, resp.HTTPResponse.StatusCode)
}
return t.NewRepoName, nil
}
func (t *Loader) getClient() (api.ClientWithResponsesInterface, error) {
if t.Config.RepoName != "" {
// using an existing repo, no need to create a client
return nil, nil
}
basicAuthProvider, err := securityprovider.NewSecurityProviderBasicAuth(t.Config.Credentials.AccessKeyID, t.Config.Credentials.SecretAccessKey)
if err != nil {
return nil, err
}
serverEndpoint := t.Config.ServerAddress + api.BaseURL
apiClient, err := api.NewClientWithResponses(
serverEndpoint,
api.WithRequestEditorFn(basicAuthProvider.Intercept),
)
if err != nil {
return nil, ErrCreateClient
}
return apiClient, nil
}
func (t *Loader) doAttack() (hasErrors bool) {
targeter := vegeta.NewJSONTargeter(t.Reader, nil,
http.Header{"Authorization": []string{"Basic " + getAuth(&t.Config.Credentials)}})
attacker := vegeta.NewAttacker(vegeta.MaxWorkers(t.Config.MaxWorkers))
t.Metrics = make(map[string]*vegeta.Metrics)
t.TotalMetrics = new(vegeta.Metrics)
rate := vegeta.Rate{Freq: t.Config.FreqPerSecond, Per: time.Second}
for res := range attacker.Attack(targeter, rate, t.Config.Duration, "lakeFS loadtest test") {
typ := GetRequestType(*res)
if len(res.Error) > 0 {
logging.Default().Debugf("Error in request type %s, error: %s, status: %d", typ, res.Error, res.Code)
hasErrors = true
}
typeMetrics := t.Metrics[typ]
if typeMetrics == nil {
typeMetrics = new(vegeta.Metrics)
t.Metrics[typ] = typeMetrics
}
typeMetrics.Add(res)
t.TotalMetrics.Add(res)
}
return
}
func progressBar(duration time.Duration) {
durationInSec := int(duration.Seconds())
progress := progressbar.NewOptions(durationInSec, progressbar.OptionSetPredictTime(false), progressbar.OptionFullWidth())
go func() {
for i := 0; i < durationInSec; i++ {
_ = progress.Add(1)
time.Sleep(time.Second)
}
_ = progress.Clear()
}()
}
func printResults(metrics map[string]*vegeta.Metrics, metricsTotal *vegeta.Metrics) error {
for requestType, typeMetrics := range metrics {
typeMetrics.Close()
fmt.Println(text.FgYellow.Sprintf("Results for request type: %s", requestType))
err := vegeta.NewTextReporter(typeMetrics).Report(os.Stdout)
if err != nil {
fmt.Println("Error trying to write report")
return err
}
fmt.Println()
}
fmt.Println(text.FgYellow.Sprintf("Results for ALL requests combined:"))
metricsTotal.Close()
err := vegeta.NewTextReporter(metricsTotal).Report(os.Stdout)
if err != nil {
fmt.Println("Error trying to write report")
return err
}
return nil
}
func (t *Loader) streamRequests(in <-chan vegeta.Target) <-chan error {
errs := make(chan error, 1)
encoder := vegeta.NewJSONTargetEncoder(t.Writer)
go func() {
defer close(errs)
for tgt := range in {
tgt := tgt // pin
err := encoder.Encode(&tgt)
if err != nil {
errs <- err
return
}
}
}()
return errs
}
func getAuth(credentials *model.Credential) string {
return base64.StdEncoding.EncodeToString([]byte(credentials.AccessKeyID + ":" + credentials.SecretAccessKey))
}