dee8dc2cda
Add commit options which allow for setting labels on commit. Prevents potential race between garbage collector reading labels after commit and labels getting set. Signed-off-by: Derek McGowan <derek@mcgstyle.net>
120 lines
3.2 KiB
Go
120 lines
3.2 KiB
Go
package content
|
|
|
|
import (
|
|
"context"
|
|
"io"
|
|
"time"
|
|
|
|
"github.com/opencontainers/go-digest"
|
|
)
|
|
|
|
type ReaderAt interface {
|
|
io.ReaderAt
|
|
io.Closer
|
|
Size() int64
|
|
}
|
|
|
|
type Provider interface {
|
|
ReaderAt(ctx context.Context, dgst digest.Digest) (ReaderAt, error)
|
|
}
|
|
|
|
type Ingester interface {
|
|
Writer(ctx context.Context, ref string, size int64, expected digest.Digest) (Writer, error)
|
|
}
|
|
|
|
// TODO(stevvooe): Consider a very different name for this struct. Info is way
|
|
// to general. It also reads very weird in certain context, like pluralization.
|
|
type Info struct {
|
|
Digest digest.Digest
|
|
Size int64
|
|
CreatedAt time.Time
|
|
UpdatedAt time.Time
|
|
Labels map[string]string
|
|
}
|
|
|
|
type Status struct {
|
|
Ref string
|
|
Offset int64
|
|
Total int64
|
|
Expected digest.Digest
|
|
StartedAt time.Time
|
|
UpdatedAt time.Time
|
|
}
|
|
|
|
// WalkFunc defines the callback for a blob walk.
|
|
type WalkFunc func(Info) error
|
|
|
|
// Manager provides methods for inspecting, listing and removing content.
|
|
type Manager interface {
|
|
// Info will return metadata about content available in the content store.
|
|
//
|
|
// If the content is not present, ErrNotFound will be returned.
|
|
Info(ctx context.Context, dgst digest.Digest) (Info, error)
|
|
|
|
// Update updates mutable information related to content.
|
|
// If one or more fieldpaths are provided, only those
|
|
// fields will be updated.
|
|
// Mutable fields:
|
|
// labels.*
|
|
Update(ctx context.Context, info Info, fieldpaths ...string) (Info, error)
|
|
|
|
// Walk will call fn for each item in the content store which
|
|
// match the provided filters. If no filters are given all
|
|
// items will be walked.
|
|
Walk(ctx context.Context, fn WalkFunc, filters ...string) error
|
|
|
|
// Delete removes the content from the store.
|
|
Delete(ctx context.Context, dgst digest.Digest) error
|
|
}
|
|
|
|
// IngestManager provides methods for managing ingests.
|
|
type IngestManager interface {
|
|
// Status returns the status of the provided ref.
|
|
Status(ctx context.Context, ref string) (Status, error)
|
|
|
|
// ListStatuses returns the status of any active ingestions whose ref match the
|
|
// provided regular expression. If empty, all active ingestions will be
|
|
// returned.
|
|
ListStatuses(ctx context.Context, filters ...string) ([]Status, error)
|
|
|
|
// Abort completely cancels the ingest operation targeted by ref.
|
|
Abort(ctx context.Context, ref string) error
|
|
}
|
|
|
|
type Writer interface {
|
|
// Close is expected to be called after Commit() when commission is needed.
|
|
io.WriteCloser
|
|
|
|
// Digest may return empty digest or panics until committed.
|
|
Digest() digest.Digest
|
|
|
|
// Commit commits the blob (but no roll-back is guaranteed on an error).
|
|
// size and expected can be zero-value when unknown.
|
|
Commit(size int64, expected digest.Digest, opts ...Opt) error
|
|
|
|
// Status returns the current state of write
|
|
Status() (Status, error)
|
|
|
|
// Truncate updates the size of the target blob
|
|
Truncate(size int64) error
|
|
}
|
|
|
|
// Store combines the methods of content-oriented interfaces into a set that
|
|
// are commonly provided by complete implementations.
|
|
type Store interface {
|
|
Manager
|
|
Provider
|
|
IngestManager
|
|
Ingester
|
|
}
|
|
|
|
// Opt is used to alter the mutable properties of content
|
|
type Opt func(*Info) error
|
|
|
|
func WithLabels(labels map[string]string) Opt {
|
|
return func(info *Info) error {
|
|
info.Labels = labels
|
|
return nil
|
|
}
|
|
}
|