120 lines
2.6 KiB
Go
120 lines
2.6 KiB
Go
package srpmproc
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import (
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"errors"
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"fmt"
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"github.com/rocky-linux/srpmproc/pkg/blob"
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"github.com/rocky-linux/srpmproc/pkg/data"
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"io"
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"io/ioutil"
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"log"
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"net/http"
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"os"
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"path/filepath"
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"strings"
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)
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func Fetch(logger io.Writer, cdnUrl string, dir string, storage blob.Storage) error {
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pd := &data.ProcessData{
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Log: log.New(logger, "", log.LstdFlags),
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}
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metadataPath := ""
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err := filepath.Walk(dir, func(path string, info os.FileInfo, err error) error {
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if strings.HasSuffix(path, ".metadata") {
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if metadataPath != "" {
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return errors.New("multiple metadata files")
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}
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metadataPath = path
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}
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return nil
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})
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if err != nil {
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return err
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}
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metadataFile, err := os.Open(metadataPath)
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if err != nil {
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return fmt.Errorf("could not open metadata file: %v", err)
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}
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fileBytes, err := ioutil.ReadAll(metadataFile)
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if err != nil {
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return fmt.Errorf("could not read metadata file: %v", err)
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}
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client := &http.Client{
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Transport: &http.Transport{
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DisableCompression: false,
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},
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}
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fileContent := strings.Split(string(fileBytes), "\n")
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for _, line := range fileContent {
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if strings.TrimSpace(line) == "" {
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continue
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}
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lineInfo := strings.Split(line, " ")
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hash := lineInfo[0]
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path := lineInfo[1]
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url := fmt.Sprintf("%s/%s", cdnUrl, hash)
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if storage != nil {
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url = hash
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}
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pd.Log.Printf("downloading %s", url)
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var body []byte
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if storage != nil {
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body, err = storage.Read(hash)
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if err != nil {
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return fmt.Errorf("could not read blob: %v", err)
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}
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} else {
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req, err := http.NewRequest("GET", url, nil)
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if err != nil {
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return fmt.Errorf("could not create new http request: %v", err)
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}
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req.Header.Set("Accept-Encoding", "*")
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resp, err := client.Do(req)
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if err != nil {
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return fmt.Errorf("could not download dist-git file: %v", err)
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}
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body, err = ioutil.ReadAll(resp.Body)
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if err != nil {
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return fmt.Errorf("could not read the whole dist-git file: %v", err)
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}
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err = resp.Body.Close()
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if err != nil {
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return fmt.Errorf("could not close body handle: %v", err)
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}
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}
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hasher := pd.CompareHash(body, hash)
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if hasher == nil {
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return fmt.Errorf("checksum in metadata does not match dist-git file")
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}
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err = os.MkdirAll(filepath.Join(dir, filepath.Dir(path)), 0755)
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if err != nil {
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return fmt.Errorf("could create all directories")
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}
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f, err := os.Create(filepath.Join(dir, path))
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if err != nil {
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return fmt.Errorf("could not open file pointer: %v", err)
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}
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_, err = f.Write(body)
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if err != nil {
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return fmt.Errorf("could not copy dist-git file to in-tree: %v", err)
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}
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_ = f.Close()
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}
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return nil
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}
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