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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
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21
docs/storage/blobstore.go
View file

@ -3,10 +3,9 @@ package storage
import (
"fmt"
ctxu "github.com/docker/distribution/context"
"github.com/docker/distribution/context"
"github.com/docker/distribution/digest"
storagedriver "github.com/docker/distribution/registry/storage/driver"
"golang.org/x/net/context"
)
// TODO(stevvooe): Currently, the blobStore implementation used by the
@ -32,7 +31,7 @@ func (bs *blobStore) exists(dgst digest.Digest) (bool, error) {
return false, err
}
ok, err := exists(bs.driver, path)
ok, err := exists(bs.ctx, bs.driver, path)
if err != nil {
return false, err
}
@ -48,7 +47,7 @@ func (bs *blobStore) get(dgst digest.Digest) ([]byte, error) {
return nil, err
}
return bs.driver.GetContent(bp)
return bs.driver.GetContent(bs.ctx, bp)
}
// link links the path to the provided digest by writing the digest into the
@ -62,7 +61,7 @@ func (bs *blobStore) link(path string, dgst digest.Digest) error {
// The contents of the "link" file are the exact string contents of the
// digest, which is specified in that package.
return bs.driver.PutContent(path, []byte(dgst))
return bs.driver.PutContent(bs.ctx, path, []byte(dgst))
}
// linked reads the link at path and returns the content.
@ -77,7 +76,7 @@ func (bs *blobStore) linked(path string) ([]byte, error) {
// readlink returns the linked digest at path.
func (bs *blobStore) readlink(path string) (digest.Digest, error) {
content, err := bs.driver.GetContent(path)
content, err := bs.driver.GetContent(bs.ctx, path)
if err != nil {
return "", err
}
@ -112,7 +111,7 @@ func (bs *blobStore) resolve(path string) (string, error) {
func (bs *blobStore) put(p []byte) (digest.Digest, error) {
dgst, err := digest.FromBytes(p)
if err != nil {
ctxu.GetLogger(bs.ctx).Errorf("error digesting content: %v, %s", err, string(p))
context.GetLogger(bs.ctx).Errorf("error digesting content: %v, %s", err, string(p))
return "", err
}
@ -128,7 +127,7 @@ func (bs *blobStore) put(p []byte) (digest.Digest, error) {
return dgst, nil
}
return dgst, bs.driver.PutContent(bp, p)
return dgst, bs.driver.PutContent(bs.ctx, bp, p)
}
// path returns the canonical path for the blob identified by digest. The blob
@ -145,9 +144,9 @@ func (bs *blobStore) path(dgst digest.Digest) (string, error) {
return bp, nil
}
// exists provides a utility method to test whether or not
func exists(driver storagedriver.StorageDriver, path string) (bool, error) {
if _, err := driver.Stat(path); err != nil {
// exists provides a utility method to test whether or not a path exists
func exists(ctx context.Context, driver storagedriver.StorageDriver, path string) (bool, error) {
if _, err := driver.Stat(ctx, path); err != nil {
switch err := err.(type) {
case storagedriver.PathNotFoundError:
return false, nil