vbatts/registry
1
0
Fork 0
Code Issues Pull requests Releases Wiki Activity

Adds new storagedriver.FileWriter interface

Browse source 
Updates registry storage code to use this for better resumable writes.
Implements this interface for the following drivers:
 + Inmemory
 + Filesystem
 + S3
 + Azure

Signed-off-by: Brian Bland <brian.bland@docker.com>
This commit is contained in:
Brian Bland 2016-02-08 14:29:21 -08:00
parent 7adddecf0b
commit c69c8a3286
25 changed files with 1059 additions and 2488 deletions
Download patch file Download diff file Expand all files Collapse all files

24
docs/storage/driver/base/base.go
View file

@ -102,10 +102,10 @@ func (base *Base) PutContent(ctx context.Context, path string, content []byte) e
return base.setDriverName(base.StorageDriver.PutContent(ctx, path, content))
}
// ReadStream wraps ReadStream of underlying storage driver.
func (base *Base) ReadStream(ctx context.Context, path string, offset int64) (io.ReadCloser, error) {
// Reader wraps Reader of underlying storage driver.
func (base *Base) Reader(ctx context.Context, path string, offset int64) (io.ReadCloser, error) {
ctx, done := context.WithTrace(ctx)
defer done("%s.ReadStream(%q, %d)", base.Name(), path, offset)
defer done("%s.Reader(%q, %d)", base.Name(), path, offset)
if offset < 0 {
return nil, storagedriver.InvalidOffsetError{Path: path, Offset: offset, DriverName: base.StorageDriver.Name()}
@ -115,25 +115,21 @@ func (base *Base) ReadStream(ctx context.Context, path string, offset int64) (io
return nil, storagedriver.InvalidPathError{Path: path, DriverName: base.StorageDriver.Name()}
}
rc, e := base.StorageDriver.ReadStream(ctx, path, offset)
rc, e := base.StorageDriver.Reader(ctx, path, offset)
return rc, base.setDriverName(e)
}
// WriteStream wraps WriteStream of underlying storage driver.
func (base *Base) WriteStream(ctx context.Context, path string, offset int64, reader io.Reader) (nn int64, err error) {
// Writer wraps Writer of underlying storage driver.
func (base *Base) Writer(ctx context.Context, path string, append bool) (storagedriver.FileWriter, error) {
ctx, done := context.WithTrace(ctx)
defer done("%s.WriteStream(%q, %d)", base.Name(), path, offset)
if offset < 0 {
return 0, storagedriver.InvalidOffsetError{Path: path, Offset: offset, DriverName: base.StorageDriver.Name()}
}
defer done("%s.Writer(%q, %v)", base.Name(), path, append)
if !storagedriver.PathRegexp.MatchString(path) {
return 0, storagedriver.InvalidPathError{Path: path, DriverName: base.StorageDriver.Name()}
return nil, storagedriver.InvalidPathError{Path: path, DriverName: base.StorageDriver.Name()}
}
i64, e := base.StorageDriver.WriteStream(ctx, path, offset, reader)
return i64, base.setDriverName(e)
writer, e := base.StorageDriver.Writer(ctx, path, append)
return writer, base.setDriverName(e)
}
// Stat wraps Stat of underlying storage driver.