/
http.go
121 lines (98 loc) · 2.29 KB
/
http.go
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package repository
import (
"errors"
"fmt"
"net/http"
"net/url"
"os"
"strings"
"time"
)
type HttpRepository struct {
RepoUrl string
}
func NewHttpRepository(repo string) (*HttpRepository, error) {
if !strings.HasSuffix(repo, "/") {
repo += "/"
}
return &HttpRepository{
RepoUrl: repo,
}, nil
}
func (repo *HttpRepository) Upload(localPath, repoPath string, meter *Meter) error {
return errors.New("Upload is not supported in Http repository")
}
func (repo *HttpRepository) Download(repoPath, localPath string, m *Meter) error {
filePath, err := getFilePath(repo.RepoUrl, repoPath)
if err != nil {
return err
}
res, err := http.Get(filePath)
if err != nil {
retry := 0
msg := err.Error()
for err != nil && strings.HasSuffix(msg, "connection reset by peer") && retry < 10 {
retry++
time.Sleep(time.Millisecond * 50 * time.Duration(retry))
res, err = http.Get(filePath)
}
if err != nil {
return err
}
}
defer res.Body.Close()
if res.StatusCode != 200 {
return fmt.Errorf("status code: %d", res.StatusCode)
}
outputFile, err := os.Create(localPath)
if err != nil {
return err
}
defer outputFile.Close()
_, err = CopyWithMeter(outputFile, res.Body, m)
return err
}
func (repo *HttpRepository) Delete(repoPath string) error {
return errors.New("Delete is not supported in Http repository")
}
func (repo *HttpRepository) Stat(repoPath string) (FileInfo, error) {
filePath, err := getFilePath(repo.RepoUrl, repoPath)
if err != nil {
return nil, err
}
res, err := http.Head(filePath)
if err != nil {
return nil, err
}
defer res.Body.Close()
if res.StatusCode != 200 {
return nil, fmt.Errorf("status code: %d", res.StatusCode)
}
info := &HttpFileInfo{
name: repoPath,
}
return info, nil
}
func (repo *HttpRepository) List(repoPath string) ([]FileInfo, error) {
return nil, errors.New("List is not supported in Http repository")
}
func getFilePath(repoPath, filePath string) (string, error) {
base, err := url.Parse(repoPath)
if err != nil {
return "", err
}
path, err := url.Parse(filePath)
if err != nil {
return "", err
}
return base.ResolveReference(path).String(), nil
}
type HttpFileInfo struct {
name string
}
func (info *HttpFileInfo) Name() string {
return info.name
}
func (info *HttpFileInfo) IsDir() bool {
return false
}