/
testprovider.go
76 lines (69 loc) · 1.7 KB
/
testprovider.go
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package netflix
import (
"errors"
"io/ioutil"
"net/http"
"net/url"
"strings"
"time"
"github.com/gesquive/fast-cli/fast"
"golang.org/x/sync/errgroup"
)
const (
workersCount = 8
payloadSizeMB = 25.0 // download payload is by default 25MB, make upload 25MB also
)
func measureNetworkSpeed(operation func() error) (float64, error) {
eg := errgroup.Group{}
sTime := time.Now()
for i := 0; i < workersCount; i++ {
eg.Go(func() error {
return operation()
})
}
if err := eg.Wait(); err != nil {
return 0, err
}
fTime := time.Now()
return payloadSizeMB * 8 * float64(workersCount) / fTime.Sub(sTime).Seconds(), nil
}
func downloadOperation(client http.Client, url string) error {
res, err := client.Get(url)
if err != nil {
return err
}
defer res.Body.Close()
ioutil.ReadAll(res.Body)
return nil
}
func uploadOperation(client http.Client, uri string, uploadPayload string) error {
v := url.Values{}
//10b * x MB / 10 = x MB
v.Add("content", uploadPayload)
resp, err := client.PostForm(uri, v)
if err != nil {
return err
}
defer resp.Body.Close()
ioutil.ReadAll(resp.Body)
return nil
}
// Measure calculates download and upload speed using fast.com
func Measure() (download, upload float64, err error) {
urls := fast.GetDlUrls(1)
if len(urls) == 0 {
return 0, 0, errors.New("server urls are not available")
}
client := http.Client{}
uploadPayload := strings.Repeat("0123456789", payloadSizeMB*1024*1024/10)
download, err = measureNetworkSpeed(func() error {
return downloadOperation(client, urls[0])
})
upload, err = measureNetworkSpeed(func() error {
return uploadOperation(client, urls[0], uploadPayload)
})
if err != nil {
return 0, 0, err
}
return download, upload, nil
}