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Make LFS http_client parallel within a batch. (#32369)

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Signed-off-by: Royce Remer <royceremer@gmail.com>
Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
pull/32400/head^2
Royce Remer 4 months ago committed by GitHub
parent f2a6df03d9
commit 54146e62c0
No known key found for this signature in database
GPG Key ID: B5690EEEBB952194
7 changed files with 170 additions and 140 deletions
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8
custom/conf/app.example.ini
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@ -2642,9 +2642,15 @@ LEVEL = Info
;; override the azure blob base path if storage type is azureblob
;AZURE_BLOB_BASE_PATH = lfs/
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; settings for Gitea's LFS client (eg: mirroring an upstream lfs endpoint)
;;
;[lfs_client]
;; When mirroring an upstream lfs endpoint, limit the number of pointers in each batch request to this number
;; Limit the number of pointers in each batch request to this number
;BATCH_SIZE = 20
;; Limit the number of concurrent upload/download operations within a batch
;BATCH_OPERATION_CONCURRENCY = 3
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

2
go.mod
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@ -124,6 +124,7 @@ require (
golang.org/x/image v0.21.0
golang.org/x/net v0.30.0
golang.org/x/oauth2 v0.23.0
golang.org/x/sync v0.8.0
golang.org/x/sys v0.26.0
golang.org/x/text v0.19.0
golang.org/x/tools v0.26.0
@ -316,7 +317,6 @@ require (
go.uber.org/zap v1.27.0 // indirect
golang.org/x/exp v0.0.0-20241009180824-f66d83c29e7c // indirect
golang.org/x/mod v0.21.0 // indirect
golang.org/x/sync v0.8.0 // indirect
golang.org/x/time v0.7.0 // indirect
google.golang.org/genproto/googleapis/rpc v0.0.0-20241021214115-324edc3d5d38 // indirect
gopkg.in/alexcesaro/quotedprintable.v3 v3.0.0-20150716171945-2caba252f4dc // indirect

29
modules/lfs/http_client.go
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@ -17,6 +17,8 @@ import (
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/proxy"
"code.gitea.io/gitea/modules/setting"
"golang.org/x/sync/errgroup"
)
// HTTPClient is used to communicate with the LFS server
@ -113,6 +115,7 @@ func (c *HTTPClient) Upload(ctx context.Context, objects []Pointer, callback Upl
return c.performOperation(ctx, objects, nil, callback)
}
// performOperation takes a slice of LFS object pointers, batches them, and performs the upload/download operations concurrently in each batch
func (c *HTTPClient) performOperation(ctx context.Context, objects []Pointer, dc DownloadCallback, uc UploadCallback) error {
if len(objects) == 0 {
return nil
@ -133,30 +136,48 @@ func (c *HTTPClient) performOperation(ctx context.Context, objects []Pointer, dc
return fmt.Errorf("TransferAdapter not found: %s", result.Transfer)
}
errGroup, groupCtx := errgroup.WithContext(ctx)
errGroup.SetLimit(setting.LFSClient.BatchOperationConcurrency)
for _, object := range result.Objects {
errGroup.Go(func() error {
return performSingleOperation(groupCtx, object, dc, uc, transferAdapter)
})
}
// only the first error is returned, preserving legacy behavior before concurrency
return errGroup.Wait()
}
// performSingleOperation performs an LFS upload or download operation on a single object
func performSingleOperation(ctx context.Context, object *ObjectResponse, dc DownloadCallback, uc UploadCallback, transferAdapter TransferAdapter) error {
// the response from a lfs batch api request for this specific object id contained an error
if object.Error != nil {
log.Trace("Error on object %v: %v", object.Pointer, object.Error)
// this was an 'upload' request inside the batch request
if uc != nil {
if _, err := uc(object.Pointer, object.Error); err != nil {
return err
}
} else {
// this was NOT an 'upload' request inside the batch request, meaning it must be a 'download' request
if err := dc(object.Pointer, nil, object.Error); err != nil {
return err
}
}
continue
// if the callback returns no err, then the error could be ignored, and the operations should continue
return nil
}
// the response from an lfs batch api request contained necessary upload/download fields to act upon
if uc != nil {
if len(object.Actions) == 0 {
log.Trace("%v already present on server", object.Pointer)
continue
return nil
}
link, ok := object.Actions["upload"]
if !ok {
log.Debug("%+v", object)
return errors.New("missing action 'upload'")
}
@ -196,8 +217,6 @@ func (c *HTTPClient) performOperation(ctx context.Context, objects []Pointer, dc
return err
}
}
}
return nil
}

97
modules/lfs/http_client_test.go
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@ -12,6 +12,8 @@ import (
"testing"
"code.gitea.io/gitea/modules/json"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/test"
"github.com/stretchr/testify/assert"
)
@ -183,71 +185,61 @@ func TestHTTPClientDownload(t *testing.T) {
cases := []struct {
endpoint string
expectederror string
expectedError string
}{
// case 0
{
endpoint: "https://status-not-ok.io",
expectederror: io.ErrUnexpectedEOF.Error(),
expectedError: io.ErrUnexpectedEOF.Error(),
},
// case 1
{
endpoint: "https://invalid-json-response.io",
expectederror: "invalid json",
expectedError: "invalid json",
},
// case 2
{
endpoint: "https://valid-batch-request-download.io",
expectederror: "",
expectedError: "",
},
// case 3
{
endpoint: "https://response-no-objects.io",
expectederror: "",
expectedError: "",
},
// case 4
{
endpoint: "https://unknown-transfer-adapter.io",
expectederror: "TransferAdapter not found: ",
expectedError: "TransferAdapter not found: ",
},
// case 5
{
endpoint: "https://error-in-response-objects.io",
expectederror: "Object not found",
expectedError: "Object not found",
},
// case 6
{
endpoint: "https://empty-actions-map.io",
expectederror: "missing action 'download'",
expectedError: "missing action 'download'",
},
// case 7
{
endpoint: "https://download-actions-map.io",
expectederror: "",
expectedError: "",
},
// case 8
{
endpoint: "https://upload-actions-map.io",
expectederror: "missing action 'download'",
expectedError: "missing action 'download'",
},
// case 9
{
endpoint: "https://verify-actions-map.io",
expectederror: "missing action 'download'",
expectedError: "missing action 'download'",
},
// case 10
{
endpoint: "https://unknown-actions-map.io",
expectederror: "missing action 'download'",
expectedError: "missing action 'download'",
},
// case 11
{
endpoint: "https://legacy-batch-request-download.io",
expectederror: "",
expectedError: "",
},
}
for n, c := range cases {
defer test.MockVariableValue(&setting.LFSClient.BatchOperationConcurrency, 3)()
for _, c := range cases {
t.Run(c.endpoint, func(t *testing.T) {
client := &HTTPClient{
client: hc,
endpoint: c.endpoint,
@ -265,11 +257,12 @@ func TestHTTPClientDownload(t *testing.T) {
assert.Equal(t, []byte("dummy"), b)
return nil
})
if len(c.expectederror) > 0 {
assert.True(t, strings.Contains(err.Error(), c.expectederror), "case %d: '%s' should contain '%s'", n, err.Error(), c.expectederror)
if c.expectedError != "" {
assert.ErrorContains(t, err, c.expectedError)
} else {
assert.NoError(t, err, "case %d", n)
assert.NoError(t, err)
}
})
}
}
@ -296,66 +289,57 @@ func TestHTTPClientUpload(t *testing.T) {
cases := []struct {
endpoint string
expectederror string
expectedError string
}{
// case 0
{
endpoint: "https://status-not-ok.io",
expectederror: io.ErrUnexpectedEOF.Error(),
expectedError: io.ErrUnexpectedEOF.Error(),
},
// case 1
{
endpoint: "https://invalid-json-response.io",
expectederror: "invalid json",
expectedError: "invalid json",
},
// case 2
{
endpoint: "https://valid-batch-request-upload.io",
expectederror: "",
expectedError: "",
},
// case 3
{
endpoint: "https://response-no-objects.io",
expectederror: "",
expectedError: "",
},
// case 4
{
endpoint: "https://unknown-transfer-adapter.io",
expectederror: "TransferAdapter not found: ",
expectedError: "TransferAdapter not found: ",
},
// case 5
{
endpoint: "https://error-in-response-objects.io",
expectederror: "Object not found",
expectedError: "Object not found",
},
// case 6
{
endpoint: "https://empty-actions-map.io",
expectederror: "",
expectedError: "",
},
// case 7
{
endpoint: "https://download-actions-map.io",
expectederror: "missing action 'upload'",
expectedError: "missing action 'upload'",
},
// case 8
{
endpoint: "https://upload-actions-map.io",
expectederror: "",
expectedError: "",
},
// case 9
{
endpoint: "https://verify-actions-map.io",
expectederror: "missing action 'upload'",
expectedError: "missing action 'upload'",
},
// case 10
{
endpoint: "https://unknown-actions-map.io",
expectederror: "missing action 'upload'",
expectedError: "missing action 'upload'",
},
}
for n, c := range cases {
defer test.MockVariableValue(&setting.LFSClient.BatchOperationConcurrency, 3)()
for _, c := range cases {
t.Run(c.endpoint, func(t *testing.T) {
client := &HTTPClient{
client: hc,
endpoint: c.endpoint,
@ -367,10 +351,11 @@ func TestHTTPClientUpload(t *testing.T) {
err := client.Upload(context.Background(), []Pointer{p}, func(p Pointer, objectError error) (io.ReadCloser, error) {
return io.NopCloser(new(bytes.Buffer)), objectError
})
if len(c.expectederror) > 0 {
assert.True(t, strings.Contains(err.Error(), c.expectederror), "case %d: '%s' should contain '%s'", n, err.Error(), c.expectederror)
if c.expectedError != "" {
assert.ErrorContains(t, err, c.expectedError)
} else {
assert.NoError(t, err, "case %d", n)
assert.NoError(t, err)
}
})
}
}

5
modules/repository/repo.go
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@ -181,11 +181,12 @@ func StoreMissingLfsObjectsInRepository(ctx context.Context, repo *repo_model.Re
downloadObjects := func(pointers []lfs.Pointer) error {
err := lfsClient.Download(ctx, pointers, func(p lfs.Pointer, content io.ReadCloser, objectError error) error {
if objectError != nil {
if errors.Is(objectError, lfs.ErrObjectNotExist) {
log.Warn("Repo[%-v]: Ignore missing LFS object %-v: %v", repo, p, objectError)
log.Warn("Ignoring missing upstream LFS object %-v: %v", p, objectError)
return nil
}
if objectError != nil {
return objectError
}

6
modules/setting/lfs.go
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@ -29,6 +29,7 @@ var LFS = struct {
// LFSClient represents configuration for Gitea's LFS clients, for example: mirroring upstream Git LFS
var LFSClient = struct {
BatchSize int `ini:"BATCH_SIZE"`
BatchOperationConcurrency int `ini:"BATCH_OPERATION_CONCURRENCY"`
}{}
func loadLFSFrom(rootCfg ConfigProvider) error {
@ -66,6 +67,11 @@ func loadLFSFrom(rootCfg ConfigProvider) error {
LFSClient.BatchSize = 20
}
if LFSClient.BatchOperationConcurrency < 1 {
// match the default git-lfs's `lfs.concurrenttransfers`
LFSClient.BatchOperationConcurrency = 3
}
LFS.HTTPAuthExpiry = sec.Key("LFS_HTTP_AUTH_EXPIRY").MustDuration(24 * time.Hour)
if !LFS.StartServer || !InstallLock {

13
modules/setting/lfs_test.go
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@ -114,4 +114,17 @@ BATCH_SIZE = 0
assert.NoError(t, loadLFSFrom(cfg))
assert.EqualValues(t, 100, LFS.MaxBatchSize)
assert.EqualValues(t, 20, LFSClient.BatchSize)
assert.EqualValues(t, 3, LFSClient.BatchOperationConcurrency)
iniStr = `
[lfs_client]
BATCH_SIZE = 50
BATCH_OPERATION_CONCURRENCY = 10
`
cfg, err = NewConfigProviderFromData(iniStr)
assert.NoError(t, err)
assert.NoError(t, loadLFSFrom(cfg))
assert.EqualValues(t, 50, LFSClient.BatchSize)
assert.EqualValues(t, 10, LFSClient.BatchOperationConcurrency)
}

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