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Make minio package support legacy MD5 checksum (#23768)

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A feedback from discord:
https://discord.com/channels/322538954119184384/561007778139734027/1090185427115319386

Some storages like:

 * https://developers.cloudflare.com/r2/api/s3/api/
 * https://www.backblaze.com/b2/docs/s3_compatible_api.html

They do not support "x-amz-checksum-algorithm" header

But minio recently uses that header with CRC32C by default. So we have
to tell minio to use legacy MD5 checksum.

I guess this needs to be backported because IIRC we 1.19 and 1.20 are
using similar minio package.


The minio package code for SendContentMD5 looks like this:

<details>

<img width="755" alt="image"
src="https://user-images.githubusercontent.com/2114189/228186768-4f2f6f67-62b9-4aee-9251-5af714ad9674.png">

</details>
This commit is contained in:
wxiaoguang 2023-03-28 23:10:24 +08:00 committed by GitHub
parent 6a0ef71984
commit 5727056ea1
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GPG key ID: 4AEE18F83AFDEB23
7 changed files with 76 additions and 26 deletions
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27
cmd/migrate_storage.go
View file

@ -72,12 +72,21 @@ var CmdMigrateStorage = cli.Command{
cli.StringFlag{
Name: "minio-base-path",
Value: "",
Usage: "Minio storage basepath on the bucket",
Usage: "Minio storage base path on the bucket",
},
cli.BoolFlag{
Name: "minio-use-ssl",
Usage: "Enable SSL for minio",
},
cli.BoolFlag{
Name: "minio-insecure-skip-verify",
Usage: "Skip SSL verification",
},
cli.StringFlag{
Name: "minio-checksum-algorithm",
Value: "",
Usage: "Minio checksum algorithm (default/md5)",
},
},
}
@ -168,13 +177,15 @@ func runMigrateStorage(ctx *cli.Context) error {
dstStorage, err = storage.NewMinioStorage(
stdCtx,
storage.MinioStorageConfig{
Endpoint: ctx.String("minio-endpoint"),
AccessKeyID: ctx.String("minio-access-key-id"),
SecretAccessKey: ctx.String("minio-secret-access-key"),
Bucket: ctx.String("minio-bucket"),
Location: ctx.String("minio-location"),
BasePath: ctx.String("minio-base-path"),
UseSSL: ctx.Bool("minio-use-ssl"),
Endpoint: ctx.String("minio-endpoint"),
AccessKeyID: ctx.String("minio-access-key-id"),
SecretAccessKey: ctx.String("minio-secret-access-key"),
Bucket: ctx.String("minio-bucket"),
Location: ctx.String("minio-location"),
BasePath: ctx.String("minio-base-path"),
UseSSL: ctx.Bool("minio-use-ssl"),
InsecureSkipVerify: ctx.Bool("minio-insecure-skip-verify"),
ChecksumAlgorithm: ctx.String("minio-checksum-algorithm"),
})
default:
return fmt.Errorf("unsupported storage type: %s", ctx.String("storage"))

3
custom/conf/app.example.ini
View file

@ -1886,6 +1886,9 @@ ROUTER = console
;;
;; Minio skip SSL verification available when STORAGE_TYPE is `minio`
;MINIO_INSECURE_SKIP_VERIFY = false
;;
;; Minio checksum algorithm: default (for MinIO or AWS S3) or md5 (for Cloudflare or Backblaze)
;MINIO_CHECKSUM_ALGORITHM = default
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

1
docs/content/doc/administration/config-cheat-sheet.en-us.md
View file

@ -855,6 +855,7 @@ Default templates for project boards:
- `MINIO_BASE_PATH`: **attachments/**: Minio base path on the bucket only available when STORAGE_TYPE is `minio`
- `MINIO_USE_SSL`: **false**: Minio enabled ssl only available when STORAGE_TYPE is `minio`
- `MINIO_INSECURE_SKIP_VERIFY`: **false**: Minio skip SSL verification available when STORAGE_TYPE is `minio`
- `MINIO_CHECKSUM_ALGORITHM`: **default**: Minio checksum algorithm: `default` (for MinIO or AWS S3) or `md5` (for Cloudflare or Backblaze)
## Log (`log`)

42
modules/lfs/content_store.go
View file

@ -60,15 +60,22 @@ func (s *ContentStore) Put(pointer Pointer, r io.Reader) error {
return err
}
// This shouldn't happen but it is sensible to test
if written != pointer.Size {
if err := s.Delete(p); err != nil {
log.Error("Cleaning the LFS OID[%s] failed: %v", pointer.Oid, err)
}
return ErrSizeMismatch
// check again whether there is any error during the Save operation
// because some errors might be ignored by the Reader's caller
if wrappedRd.lastError != nil && !errors.Is(wrappedRd.lastError, io.EOF) {
err = wrappedRd.lastError
} else if written != pointer.Size {
err = ErrSizeMismatch
}
return nil
// if the upload failed, try to delete the file
if err != nil {
if errDel := s.Delete(p); errDel != nil {
log.Error("Cleaning the LFS OID[%s] failed: %v", pointer.Oid, errDel)
}
}
return err
}
// Exists returns true if the object exists in the content store.
@ -109,6 +116,17 @@ type hashingReader struct {
expectedSize int64
hash hash.Hash
expectedHash string
lastError error
}
// recordError records the last error during the Save operation
// Some callers of the Reader doesn't respect the returned "err"
// For example, MinIO's Put will ignore errors if the written size could equal to expected size
// So we must remember the error by ourselves,
// and later check again whether ErrSizeMismatch or ErrHashMismatch occurs during the Save operation
func (r *hashingReader) recordError(err error) error {
r.lastError = err
return err
}
func (r *hashingReader) Read(b []byte) (int, error) {
@ -118,22 +136,22 @@ func (r *hashingReader) Read(b []byte) (int, error) {
r.currentSize += int64(n)
wn, werr := r.hash.Write(b[:n])
if wn != n || werr != nil {
return n, werr
return n, r.recordError(werr)
}
}
if err != nil && err == io.EOF {
if errors.Is(err, io.EOF) || r.currentSize >= r.expectedSize {
if r.currentSize != r.expectedSize {
return n, ErrSizeMismatch
return n, r.recordError(ErrSizeMismatch)
}
shaStr := hex.EncodeToString(r.hash.Sum(nil))
if shaStr != r.expectedHash {
return n, ErrHashMismatch
return n, r.recordError(ErrHashMismatch)
}
}
return n, err
return n, r.recordError(err)
}
func newHashingReader(expectedSize int64, expectedHash string, reader io.Reader) *hashingReader {

1
modules/setting/storage.go
View file

@ -42,6 +42,7 @@ func getStorage(rootCfg ConfigProvider, name, typ string, targetSec *ini.Section
sec.Key("MINIO_LOCATION").MustString("us-east-1")
sec.Key("MINIO_USE_SSL").MustBool(false)
sec.Key("MINIO_INSECURE_SKIP_VERIFY").MustBool(false)
sec.Key("MINIO_CHECKSUM_ALGORITHM").MustString("default")
if targetSec == nil {
targetSec, _ = rootCfg.NewSection(name)

21
modules/storage/minio.go
View file

@ -6,6 +6,7 @@ package storage
import (
"context"
"crypto/tls"
"fmt"
"io"
"net/http"
"net/url"
@ -53,10 +54,12 @@ type MinioStorageConfig struct {
BasePath string `ini:"MINIO_BASE_PATH"`
UseSSL bool `ini:"MINIO_USE_SSL"`
InsecureSkipVerify bool `ini:"MINIO_INSECURE_SKIP_VERIFY"`
ChecksumAlgorithm string `ini:"MINIO_CHECKSUM_ALGORITHM"`
}
// MinioStorage returns a minio bucket storage
type MinioStorage struct {
cfg *MinioStorageConfig
ctx context.Context
client *minio.Client
bucket string
@ -91,6 +94,10 @@ func NewMinioStorage(ctx context.Context, cfg interface{}) (ObjectStorage, error
}
config := configInterface.(MinioStorageConfig)
if config.ChecksumAlgorithm != "" && config.ChecksumAlgorithm != "default" && config.ChecksumAlgorithm != "md5" {
return nil, fmt.Errorf("invalid minio checksum algorithm: %s", config.ChecksumAlgorithm)
}
log.Info("Creating Minio storage at %s:%s with base path %s", config.Endpoint, config.Bucket, config.BasePath)
minioClient, err := minio.New(config.Endpoint, &minio.Options{
@ -113,6 +120,7 @@ func NewMinioStorage(ctx context.Context, cfg interface{}) (ObjectStorage, error
}
return &MinioStorage{
cfg: &config,
ctx: ctx,
client: minioClient,
bucket: config.Bucket,
@ -124,7 +132,7 @@ func (m *MinioStorage) buildMinioPath(p string) string {
return util.PathJoinRelX(m.basePath, p)
}
// Open open a file
// Open opens a file
func (m *MinioStorage) Open(path string) (Object, error) {
opts := minio.GetObjectOptions{}
object, err := m.client.GetObject(m.ctx, m.bucket, m.buildMinioPath(path), opts)
@ -134,7 +142,7 @@ func (m *MinioStorage) Open(path string) (Object, error) {
return &minioObject{object}, nil
}
// Save save a file to minio
// Save saves a file to minio
func (m *MinioStorage) Save(path string, r io.Reader, size int64) (int64, error) {
uploadInfo, err := m.client.PutObject(
m.ctx,
@ -142,7 +150,14 @@ func (m *MinioStorage) Save(path string, r io.Reader, size int64) (int64, error)
m.buildMinioPath(path),
r,
size,
minio.PutObjectOptions{ContentType: "application/octet-stream"},
minio.PutObjectOptions{
ContentType: "application/octet-stream",
// some storages like:
// * https://developers.cloudflare.com/r2/api/s3/api/
// * https://www.backblaze.com/b2/docs/s3_compatible_api.html
// do not support "x-amz-checksum-algorithm" header, so use legacy MD5 checksum
SendContentMd5: m.cfg.ChecksumAlgorithm == "md5",
},
)
if err != nil {
return 0, convertMinioErr(err)

1
tests/pgsql.ini.tmpl
View file

@ -125,6 +125,7 @@ MINIO_SECRET_ACCESS_KEY = 12345678
MINIO_BUCKET = gitea
MINIO_LOCATION = us-east-1
MINIO_USE_SSL = false
MINIO_CHECKSUM_ALGORITHM = md5
[packages]
ENABLED = true