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Make Storage Driver API calls context aware.

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- Change driver interface to take a context as its first argument
     - Make newFileReader take a context as its first argument
     - Make newFileWriter take a context as its first argument
     - Make blobstore exists and delete take a context as a first argument
     - Pass the layerreader's context to the storage layer
     - Pass the app's context to purgeuploads
     - Store the app's context into the blobstore (was previously null)
     - Pass the trace'd context to the storage drivers

Signed-off-by: Richard Scothern <richard.scothern@gmail.com>
This commit is contained in:
Richard 2015-04-27 15:58:58 -07:00
parent c0d297c011
commit 5d9105bd25
30 changed files with 383 additions and 343 deletions
Download patch file Download diff file Expand all files Collapse all files

23
docs/storage/driver/filesystem/driver.go
View file

@ -9,6 +9,7 @@ import (
"path"
"time"
"github.com/docker/distribution/context"
storagedriver "github.com/docker/distribution/registry/storage/driver"
"github.com/docker/distribution/registry/storage/driver/base"
"github.com/docker/distribution/registry/storage/driver/factory"
@ -76,8 +77,8 @@ func (d *driver) Name() string {
}
// GetContent retrieves the content stored at "path" as a []byte.
func (d *driver) GetContent(path string) ([]byte, error) {
rc, err := d.ReadStream(path, 0)
func (d *driver) GetContent(ctx context.Context, path string) ([]byte, error) {
rc, err := d.ReadStream(ctx, path, 0)
if err != nil {
return nil, err
}
@ -92,8 +93,8 @@ func (d *driver) GetContent(path string) ([]byte, error) {
}
// PutContent stores the []byte content at a location designated by "path".
func (d *driver) PutContent(subPath string, contents []byte) error {
if _, err := d.WriteStream(subPath, 0, bytes.NewReader(contents)); err != nil {
func (d *driver) PutContent(ctx context.Context, subPath string, contents []byte) error {
if _, err := d.WriteStream(ctx, subPath, 0, bytes.NewReader(contents)); err != nil {
return err
}
@ -102,7 +103,7 @@ func (d *driver) PutContent(subPath string, contents []byte) error {
// ReadStream retrieves an io.ReadCloser for the content stored at "path" with a
// given byte offset.
func (d *driver) ReadStream(path string, offset int64) (io.ReadCloser, error) {
func (d *driver) ReadStream(ctx context.Context, path string, offset int64) (io.ReadCloser, error) {
file, err := os.OpenFile(d.fullPath(path), os.O_RDONLY, 0644)
if err != nil {
if os.IsNotExist(err) {
@ -126,7 +127,7 @@ func (d *driver) ReadStream(path string, offset int64) (io.ReadCloser, error) {
// WriteStream stores the contents of the provided io.Reader at a location
// designated by the given path.
func (d *driver) WriteStream(subPath string, offset int64, reader io.Reader) (nn int64, err error) {
func (d *driver) WriteStream(ctx context.Context, subPath string, offset int64, reader io.Reader) (nn int64, err error) {
// TODO(stevvooe): This needs to be a requirement.
// if !path.IsAbs(subPath) {
// return fmt.Errorf("absolute path required: %q", subPath)
@ -162,7 +163,7 @@ func (d *driver) WriteStream(subPath string, offset int64, reader io.Reader) (nn
// Stat retrieves the FileInfo for the given path, including the current size
// in bytes and the creation time.
func (d *driver) Stat(subPath string) (storagedriver.FileInfo, error) {
func (d *driver) Stat(ctx context.Context, subPath string) (storagedriver.FileInfo, error) {
fullPath := d.fullPath(subPath)
fi, err := os.Stat(fullPath)
@ -182,7 +183,7 @@ func (d *driver) Stat(subPath string) (storagedriver.FileInfo, error) {
// List returns a list of the objects that are direct descendants of the given
// path.
func (d *driver) List(subPath string) ([]string, error) {
func (d *driver) List(ctx context.Context, subPath string) ([]string, error) {
if subPath[len(subPath)-1] != '/' {
subPath += "/"
}
@ -213,7 +214,7 @@ func (d *driver) List(subPath string) ([]string, error) {
// Move moves an object stored at sourcePath to destPath, removing the original
// object.
func (d *driver) Move(sourcePath string, destPath string) error {
func (d *driver) Move(ctx context.Context, sourcePath string, destPath string) error {
source := d.fullPath(sourcePath)
dest := d.fullPath(destPath)
@ -230,7 +231,7 @@ func (d *driver) Move(sourcePath string, destPath string) error {
}
// Delete recursively deletes all objects stored at "path" and its subpaths.
func (d *driver) Delete(subPath string) error {
func (d *driver) Delete(ctx context.Context, subPath string) error {
fullPath := d.fullPath(subPath)
_, err := os.Stat(fullPath)
@ -246,7 +247,7 @@ func (d *driver) Delete(subPath string) error {
// URLFor returns a URL which may be used to retrieve the content stored at the given path.
// May return an UnsupportedMethodErr in certain StorageDriver implementations.
func (d *driver) URLFor(path string, options map[string]interface{}) (string, error) {
func (d *driver) URLFor(ctx context.Context, path string, options map[string]interface{}) (string, error) {
return "", storagedriver.ErrUnsupportedMethod
}