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Add push object

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Split resolver to only return a name with separate methods
for getting a fetcher and pusher. Add implementation for
push.

Signed-off-by: Derek McGowan <derek@mcgstyle.net>
This commit is contained in:
Derek McGowan
2017-05-16 13:08:06 -07:00
parent 8f3b89c79d
commit 735b0e515e
12 changed files with 590 additions and 209 deletions
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26
remotes/resolver.go
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@@ -7,7 +7,7 @@ import (
ocispec "github.com/opencontainers/image-spec/specs-go/v1"
)
// Resolver provides a remote based on a locator.
// Resolver provides remotes based on a locator.
type Resolver interface {
// Resolve attempts to resolve the reference into a name and descriptor.
//
@@ -20,7 +20,15 @@ type Resolver interface {
// While the name may differ from ref, it should itself be a valid ref.
//
// If the resolution fails, an error will be returned.
Resolve(ctx context.Context, ref string) (name string, desc ocispec.Descriptor, fetcher Fetcher, err error)
Resolve(ctx context.Context, ref string) (name string, desc ocispec.Descriptor, err error)
// Fetcher returns a new fetcher for the provided reference.
// All content fetched from the returned fetcher will be
// from the namespace referred to by ref.
Fetcher(ctx context.Context, ref string) (Fetcher, error)
// Pusher returns a new pusher for the provided reference
Pusher(ctx context.Context, ref string) (Pusher, error)
}
type Fetcher interface {
@@ -28,6 +36,12 @@ type Fetcher interface {
Fetch(ctx context.Context, desc ocispec.Descriptor) (io.ReadCloser, error)
}
type Pusher interface {
// Push pushes the resource identified by the descriptor using the
// passed in reader.
Push(ctx context.Context, d ocispec.Descriptor, r io.Reader) error
}
// FetcherFunc allows package users to implement a Fetcher with just a
// function.
type FetcherFunc func(ctx context.Context, desc ocispec.Descriptor) (io.ReadCloser, error)
@@ -35,3 +49,11 @@ type FetcherFunc func(ctx context.Context, desc ocispec.Descriptor) (io.ReadClos
func (fn FetcherFunc) Fetch(ctx context.Context, desc ocispec.Descriptor) (io.ReadCloser, error) {
return fn(ctx, desc)
}
// PusherFunc allows package users to implement a Pusher with just a
// function.
type PusherFunc func(ctx context.Context, desc ocispec.Descriptor, r io.Reader) error
func (fn PusherFunc) Pusher(ctx context.Context, desc ocispec.Descriptor, r io.Reader) error {
return fn(ctx, desc, r)
}