Merge pull request distribution#3711 from aaronlehmann/request-with-c…

…ontext

Use http.NewRequestWithContext for outgoing HTTP requests

registry/client/auth/session.go

@@ -1,6 +1,7 @@
 package auth
 
 import (
+	"context"
 	"encoding/json"
 	"errors"
 	"fmt"
@@ -258,7 +259,7 @@ func (th *tokenHandler) AuthorizeRequest(req *http.Request, params map[string]st
 		}.String())
 	}
 
-	token, err := th.getToken(params, additionalScopes...)
+	token, err := th.getToken(req.Context(), params, additionalScopes...)
 	if err != nil {
 		return err
 	}
@@ -268,7 +269,7 @@ func (th *tokenHandler) AuthorizeRequest(req *http.Request, params map[string]st
 	return nil
 }
 
-func (th *tokenHandler) getToken(params map[string]string, additionalScopes ...string) (string, error) {
+func (th *tokenHandler) getToken(ctx context.Context, params map[string]string, additionalScopes ...string) (string, error) {
 	th.tokenLock.Lock()
 	defer th.tokenLock.Unlock()
 	scopes := make([]string, 0, len(th.scopes)+len(additionalScopes))
@@ -286,7 +287,7 @@ func (th *tokenHandler) getToken(params map[string]string, additionalScopes ...s
 
 	now := th.clock.Now()
 	if now.After(th.tokenExpiration) || addedScopes {
-		token, expiration, err := th.fetchToken(params, scopes)
+		token, expiration, err := th.fetchToken(ctx, params, scopes)
 		if err != nil {
 			return "", err
 		}
@@ -320,7 +321,7 @@ type postTokenResponse struct {
 	Scope        string    `json:"scope"`
 }
 
-func (th *tokenHandler) fetchTokenWithOAuth(realm *url.URL, refreshToken, service string, scopes []string) (token string, expiration time.Time, err error) {
+func (th *tokenHandler) fetchTokenWithOAuth(ctx context.Context, realm *url.URL, refreshToken, service string, scopes []string) (token string, expiration time.Time, err error) {
 	form := url.Values{}
 	form.Set("scope", strings.Join(scopes, " "))
 	form.Set("service", service)
@@ -348,7 +349,12 @@ func (th *tokenHandler) fetchTokenWithOAuth(realm *url.URL, refreshToken, servic
 		return "", time.Time{}, fmt.Errorf("no supported grant type")
 	}
 
-	resp, err := th.client().PostForm(realm.String(), form)
+	req, err := http.NewRequestWithContext(ctx, http.MethodPost, realm.String(), strings.NewReader(form.Encode()))
+	if err != nil {
+		return "", time.Time{}, err
+	}
+	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+	resp, err := th.client().Do(req)
 	if err != nil {
 		return "", time.Time{}, err
 	}
@@ -396,9 +402,8 @@ type getTokenResponse struct {
 	RefreshToken string    `json:"refresh_token"`
 }
 
-func (th *tokenHandler) fetchTokenWithBasicAuth(realm *url.URL, service string, scopes []string) (token string, expiration time.Time, err error) {
-
-	req, err := http.NewRequest("GET", realm.String(), nil)
+func (th *tokenHandler) fetchTokenWithBasicAuth(ctx context.Context, realm *url.URL, service string, scopes []string) (token string, expiration time.Time, err error) {
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, realm.String(), nil)
 	if err != nil {
 		return "", time.Time{}, err
 	}
@@ -479,7 +484,7 @@ func (th *tokenHandler) fetchTokenWithBasicAuth(realm *url.URL, service string,
 	return tr.Token, tr.IssuedAt.Add(time.Duration(tr.ExpiresIn) * time.Second), nil
 }
 
-func (th *tokenHandler) fetchToken(params map[string]string, scopes []string) (token string, expiration time.Time, err error) {
+func (th *tokenHandler) fetchToken(ctx context.Context, params map[string]string, scopes []string) (token string, expiration time.Time, err error) {
 	realm, ok := params["realm"]
 	if !ok {
 		return "", time.Time{}, errors.New("no realm specified for token auth challenge")
@@ -500,10 +505,10 @@ func (th *tokenHandler) fetchToken(params map[string]string, scopes []string) (t
 	}
 
 	if refreshToken != "" || th.forceOAuth {
-		return th.fetchTokenWithOAuth(realmURL, refreshToken, service, scopes)
+		return th.fetchTokenWithOAuth(ctx, realmURL, refreshToken, service, scopes)
 	}
 
-	return th.fetchTokenWithBasicAuth(realmURL, service, scopes)
+	return th.fetchTokenWithBasicAuth(ctx, realmURL, service, scopes)
 }
 
 type basicHandler struct {

registry/client/blob_writer.go

@@ -13,6 +13,8 @@ import (
 )
 
 type httpBlobUpload struct {
+	ctx context.Context
+
 	statter distribution.BlobStatter
 	client  *http.Client
 
@@ -36,7 +38,7 @@ func (hbu *httpBlobUpload) handleErrorResponse(resp *http.Response) error {
 }
 
 func (hbu *httpBlobUpload) ReadFrom(r io.Reader) (n int64, err error) {
-	req, err := http.NewRequest("PATCH", hbu.location, ioutil.NopCloser(r))
+	req, err := http.NewRequestWithContext(hbu.ctx, "PATCH", hbu.location, ioutil.NopCloser(r))
 	if err != nil {
 		return 0, err
 	}
@@ -69,7 +71,7 @@ func (hbu *httpBlobUpload) ReadFrom(r io.Reader) (n int64, err error) {
 }
 
 func (hbu *httpBlobUpload) Write(p []byte) (n int, err error) {
-	req, err := http.NewRequest("PATCH", hbu.location, bytes.NewReader(p))
+	req, err := http.NewRequestWithContext(hbu.ctx, "PATCH", hbu.location, bytes.NewReader(p))
 	if err != nil {
 		return 0, err
 	}
@@ -117,7 +119,7 @@ func (hbu *httpBlobUpload) StartedAt() time.Time {
 
 func (hbu *httpBlobUpload) Commit(ctx context.Context, desc distribution.Descriptor) (distribution.Descriptor, error) {
 	// TODO(dmcgowan): Check if already finished, if so just fetch
-	req, err := http.NewRequest("PUT", hbu.location, nil)
+	req, err := http.NewRequestWithContext(hbu.ctx, "PUT", hbu.location, nil)
 	if err != nil {
 		return distribution.Descriptor{}, err
 	}
@@ -140,7 +142,7 @@ func (hbu *httpBlobUpload) Commit(ctx context.Context, desc distribution.Descrip
 }
 
 func (hbu *httpBlobUpload) Cancel(ctx context.Context) error {
-	req, err := http.NewRequest("DELETE", hbu.location, nil)
+	req, err := http.NewRequestWithContext(hbu.ctx, "DELETE", hbu.location, nil)
 	if err != nil {
 		return err
 	}

registry/client/blob_writer_test.go

@@ -2,6 +2,7 @@ package client
 
 import (
 	"bytes"
+	"context"
 	"fmt"
 	"net/http"
 	"testing"
@@ -126,6 +127,7 @@ func TestUploadReadFrom(t *testing.T) {
 	defer c()
 
 	blobUpload := &httpBlobUpload{
+		ctx:    context.Background(),
 		client: &http.Client{},
 	}
 
@@ -265,6 +267,7 @@ func TestUploadSize(t *testing.T) {
 
 	// Writing with ReadFrom
 	blobUpload := &httpBlobUpload{
+		ctx:      context.Background(),
 		client:   &http.Client{},
 		location: e + readFromLocationPath,
 	}
@@ -284,6 +287,7 @@ func TestUploadSize(t *testing.T) {
 
 	// Writing with Write
 	blobUpload = &httpBlobUpload{
+		ctx:      context.Background(),
 		client:   &http.Client{},
 		location: e + writeLocationPath,
 	}
@@ -409,6 +413,7 @@ func TestUploadWrite(t *testing.T) {
 	defer c()
 
 	blobUpload := &httpBlobUpload{
+		ctx:    context.Background(),
 		client: &http.Client{},
 	}
 

registry/client/repository.go

@@ -118,9 +118,7 @@ func (r *registry) Repositories(ctx context.Context, entries []string, last stri
 			return 0, err
 		}
 
-		for cnt := range ctlg.Repositories {
-			entries[cnt] = ctlg.Repositories[cnt]
-		}
+		copy(entries, ctlg.Repositories)
 		numFilled = len(ctlg.Repositories)
 
 		link := resp.Header.Get("Link")
@@ -373,7 +371,7 @@ func (t *tags) Untag(ctx context.Context, tag string) error {
 		return err
 	}
 
-	req, err := http.NewRequest("DELETE", u, nil)
+	req, err := http.NewRequestWithContext(ctx, "DELETE", u, nil)
 	if err != nil {
 		return err
 	}
@@ -792,7 +790,7 @@ func (bs *blobs) Create(ctx context.Context, options ...distribution.BlobCreateO
 		return nil, err
 	}
 
-	req, err := http.NewRequest("POST", u, nil)
+	req, err := http.NewRequestWithContext(ctx, "POST", u, nil)
 	if err != nil {
 		return nil, err
 	}
@@ -827,6 +825,7 @@ func (bs *blobs) Create(ctx context.Context, options ...distribution.BlobCreateO
 		}
 
 		return &httpBlobUpload{
+			ctx:       ctx,
 			statter:   bs.statter,
 			client:    bs.client,
 			uuid:      uuid,
@@ -845,6 +844,7 @@ func (bs *blobs) Resume(ctx context.Context, id string) (distribution.BlobWriter
 	}
 
 	return &httpBlobUpload{
+		ctx:       ctx,
 		statter:   bs.statter,
 		client:    bs.client,
 		uuid:      id,