daniel
/
distribution
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Make the registry client more tolerant about HTTP status codes 

Generally, all 2xx and 3xx codes should be treated as success.

Signed-off-by: Aaron Lehmann <aaron.lehmann@docker.com>
master
Aaron Lehmann 2015-07-24 16:14:04 -07:00
parent a6ef6c0dc3
commit 6b4573225c
5 changed files with 40 additions and 52 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
docs/client/auth/session.go
View File

@ -10,6 +10,7 @@ import (
"sync"
"time"
"github.com/docker/distribution/registry/client"
"github.com/docker/distribution/registry/client/transport"
)
@ -209,7 +210,7 @@ func (th *tokenHandler) fetchToken(params map[string]string) (token string, err
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
if !client.SuccessStatus(resp.StatusCode) {
return "", fmt.Errorf("token auth attempt for registry: %s request failed with status: %d %s", req.URL, resp.StatusCode, http.StatusText(resp.StatusCode))
}

12
docs/client/blob_writer.go
View File

@ -44,7 +44,7 @@ func (hbu *httpBlobUpload) ReadFrom(r io.Reader) (n int64, err error) {
return 0, err
}
if resp.StatusCode != http.StatusAccepted {
if !SuccessStatus(resp.StatusCode) {
return 0, hbu.handleErrorResponse(resp)
}
@ -79,7 +79,7 @@ func (hbu *httpBlobUpload) Write(p []byte) (n int, err error) {
return 0, err
}
if resp.StatusCode != http.StatusAccepted {
if !SuccessStatus(resp.StatusCode) {
return 0, hbu.handleErrorResponse(resp)
}
@ -142,7 +142,7 @@ func (hbu *httpBlobUpload) Commit(ctx context.Context, desc distribution.Descrip
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusCreated {
if !SuccessStatus(resp.StatusCode) {
return distribution.Descriptor{}, hbu.handleErrorResponse(resp)
}
@ -160,12 +160,10 @@ func (hbu *httpBlobUpload) Cancel(ctx context.Context) error {
}
defer resp.Body.Close()
switch resp.StatusCode {
case http.StatusNoContent, http.StatusNotFound:
if resp.StatusCode == http.StatusNotFound || SuccessStatus(resp.StatusCode) {
return nil
default:
return hbu.handleErrorResponse(resp)
}
return hbu.handleErrorResponse(resp)
}
func (hbu *httpBlobUpload) Close() error {

6
docs/client/errors.go
View File

@ -61,3 +61,9 @@ func handleErrorResponse(resp *http.Response) error {
}
return &UnexpectedHTTPStatusError{Status: resp.Status}
}
// SuccessStatus returns true if the argument is a successful HTTP response
// code (in the range 200 - 399 inclusive).
func SuccessStatus(status int) bool {
return status >= 200 && status <= 399
}

64
docs/client/repository.go
View File

@ -70,8 +70,7 @@ func (r *registry) Repositories(ctx context.Context, entries []string, last stri
}
defer resp.Body.Close()
switch resp.StatusCode {
case http.StatusOK:
if SuccessStatus(resp.StatusCode) {
var ctlg struct {
Repositories []string `json:"repositories"`
}
@ -90,8 +89,7 @@ func (r *registry) Repositories(ctx context.Context, entries []string, last stri
if link == "" {
returnErr = io.EOF
}
default:
} else {
return 0, handleErrorResponse(resp)
}
@ -199,8 +197,7 @@ func (ms *manifests) Tags() ([]string, error) {
}
defer resp.Body.Close()
switch resp.StatusCode {
case http.StatusOK:
if SuccessStatus(resp.StatusCode) {
b, err := ioutil.ReadAll(resp.Body)
if err != nil {
return nil, err
@ -214,11 +211,10 @@ func (ms *manifests) Tags() ([]string, error) {
}
return tagsResponse.Tags, nil
case http.StatusNotFound:
} else if resp.StatusCode == http.StatusNotFound {
return nil, nil
default:
return nil, handleErrorResponse(resp)
}
return nil, handleErrorResponse(resp)
}
func (ms *manifests) Exists(dgst digest.Digest) (bool, error) {
@ -238,14 +234,12 @@ func (ms *manifests) ExistsByTag(tag string) (bool, error) {
return false, err
}
switch resp.StatusCode {
case http.StatusOK:
if SuccessStatus(resp.StatusCode) {
return true, nil
case http.StatusNotFound:
} else if resp.StatusCode == http.StatusNotFound {
return false, nil
default:
return false, handleErrorResponse(resp)
}
return false, handleErrorResponse(resp)
}
func (ms *manifests) Get(dgst digest.Digest) (*manifest.SignedManifest, error) {
@ -294,8 +288,9 @@ func (ms *manifests) GetByTag(tag string, options ...distribution.ManifestServic
}
defer resp.Body.Close()
switch resp.StatusCode {
case http.StatusOK:
if resp.StatusCode == http.StatusNotModified {
return nil, nil
} else if SuccessStatus(resp.StatusCode) {
var sm manifest.SignedManifest
decoder := json.NewDecoder(resp.Body)
@ -303,11 +298,8 @@ func (ms *manifests) GetByTag(tag string, options ...distribution.ManifestServic
return nil, err
}
return &sm, nil
case http.StatusNotModified:
return nil, nil
default:
return nil, handleErrorResponse(resp)
}
return nil, handleErrorResponse(resp)
}
func (ms *manifests) Put(m *manifest.SignedManifest) error {
@ -329,13 +321,11 @@ func (ms *manifests) Put(m *manifest.SignedManifest) error {
}
defer resp.Body.Close()
switch resp.StatusCode {
case http.StatusAccepted:
if SuccessStatus(resp.StatusCode) {
// TODO(dmcgowan): make use of digest header
return nil
default:
return handleErrorResponse(resp)
}
return handleErrorResponse(resp)
}
func (ms *manifests) Delete(dgst digest.Digest) error {
@ -354,12 +344,10 @@ func (ms *manifests) Delete(dgst digest.Digest) error {
}
defer resp.Body.Close()
switch resp.StatusCode {
case http.StatusAccepted:
if SuccessStatus(resp.StatusCode) {
return nil
default:
return handleErrorResponse(resp)
}
return handleErrorResponse(resp)
}
type blobs struct {
@ -461,8 +449,7 @@ func (bs *blobs) Create(ctx context.Context) (distribution.BlobWriter, error) {
}
defer resp.Body.Close()
switch resp.StatusCode {
case http.StatusAccepted:
if SuccessStatus(resp.StatusCode) {
// TODO(dmcgowan): Check for invalid UUID
uuid := resp.Header.Get("Docker-Upload-UUID")
location, err := sanitizeLocation(resp.Header.Get("Location"), u)
@ -477,9 +464,8 @@ func (bs *blobs) Create(ctx context.Context) (distribution.BlobWriter, error) {
startedAt: time.Now(),
location: location,
}, nil
default:
return nil, handleErrorResponse(resp)
}
return nil, handleErrorResponse(resp)
}
func (bs *blobs) Resume(ctx context.Context, id string) (distribution.BlobWriter, error) {
@ -508,8 +494,7 @@ func (bs *blobStatter) Stat(ctx context.Context, dgst digest.Digest) (distributi
}
defer resp.Body.Close()
switch resp.StatusCode {
case http.StatusOK:
if SuccessStatus(resp.StatusCode) {
lengthHeader := resp.Header.Get("Content-Length")
length, err := strconv.ParseInt(lengthHeader, 10, 64)
if err != nil {
@ -521,11 +506,10 @@ func (bs *blobStatter) Stat(ctx context.Context, dgst digest.Digest) (distributi
Size: length,
Digest: dgst,
}, nil
case http.StatusNotFound:
} else if resp.StatusCode == http.StatusNotFound {
return distribution.Descriptor{}, distribution.ErrBlobUnknown
default:
return distribution.Descriptor{}, handleErrorResponse(resp)
}
return distribution.Descriptor{}, handleErrorResponse(resp)
}
func buildCatalogValues(maxEntries int, last string) url.Values {
@ -559,12 +543,10 @@ func (bs *blobStatter) Clear(ctx context.Context, dgst digest.Digest) error {
}
defer resp.Body.Close()
switch resp.StatusCode {
case http.StatusAccepted:
if SuccessStatus(resp.StatusCode) {
return nil
default:
return handleErrorResponse(resp)
}
return handleErrorResponse(resp)
}
func (bs *blobStatter) SetDescriptor(ctx context.Context, dgst digest.Digest, desc distribution.Descriptor) error {

7
docs/client/transport/http_reader.go
View File

@ -154,10 +154,11 @@ func (hrs *httpReadSeeker) reader() (io.Reader, error) {
return nil, err
}
switch {
case resp.StatusCode == 200:
// Normally would use client.SuccessStatus, but that would be a cyclic
// import
if resp.StatusCode >= 200 && resp.StatusCode <= 399 {
hrs.rc = resp.Body
default:
} else {
defer resp.Body.Close()
return nil, fmt.Errorf("unexpected status resolving reader: %v", resp.Status)
}