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Use SHA1 streaming hash for Etag

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This commit is contained in:
Conrad Hoffmann 2022-03-16 14:47:47 +01:00
parent b3277148d7
commit e069bc0e9b
1 changed files with 11 additions and 3 deletions
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14
storage/filesystem.go
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@ -2,10 +2,11 @@ package storage
import ( import (
"context" "context"
"crypto/md5" "crypto/sha1"
"encoding/base64" "encoding/base64"
"encoding/json" "encoding/json"
"fmt" "fmt"
"io"
"io/ioutil" "io/ioutil"
"os" "os"
"path/filepath" "path/filepath"
@ -75,11 +76,18 @@ func (b *filesystemBackend) safePath(ctx context.Context, path string) (string,
} }
func etagForFile(path string) (string, error) { func etagForFile(path string) (string, error) {
data, err := ioutil.ReadFile(path) f, err := os.Open(path)
if err != nil { if err != nil {
return "", err return "", err
} }
csum := md5.Sum(data) defer f.Close()
h := sha1.New()
if _, err := io.Copy(h, f); err != nil {
return "", err
}
csum := h.Sum(nil)
return base64.StdEncoding.EncodeToString(csum[:]), nil return base64.StdEncoding.EncodeToString(csum[:]), nil
} }