Skip to content

feat: add fetch layer reader #177

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 2 commits into from
May 13, 2025
Merged

feat: add fetch layer reader #177

Show file tree
Hide file tree
Changes from all commits
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
ef9bef0
fetch layer reader
AustinAbro321 May 12, 2025
96e3bcb
create file with permissions
AustinAbro321 May 13, 2025
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
14 changes: 14 additions & 0 deletions oci/fetch.go
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -76,6 +76,20 @@ func (o *OrasRemote) FetchLayer(ctx context.Context, desc ocispec.Descriptor) (b
return content.FetchAll(ctx, src, desc)
}

// FetchLayerReader fetches the layer with the given descriptor from the remote repository.
func (o *OrasRemote) FetchLayerReader(ctx context.Context, desc ocispec.Descriptor) (*content.VerifyReader, error) {
var src oras.ReadOnlyTarget
src = o.repo
if o.cache != nil {
src = orasCache.New(o.repo, o.cache)
}
r, err := src.Fetch(ctx, desc)
if err != nil {
return nil, err
}
return content.NewVerifyReader(r, desc), nil
}

// FetchJSONFile fetches the given JSON file from the remote repository.
func FetchJSONFile[T any](ctx context.Context, fetcher func(ctx context.Context, desc ocispec.Descriptor) (bytes []byte, err error), manifest *Manifest, path string) (result T, err error) {
descriptor := manifest.Locate(path)
Expand Down
16 changes: 14 additions & 2 deletions oci/pull.go
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,8 @@ package oci
import (
"context"
"errors"
"fmt"
"io"
"os"
"path/filepath"
"slices"
Expand Down Expand Up @@ -86,7 +88,7 @@ func (o *OrasRemote) CopyToTarget(ctx context.Context, layers []ocispec.Descript

// PullPath pulls a layer from the remote repository and saves it to `destinationDir/annotationTitle`.
func (o *OrasRemote) PullPath(ctx context.Context, destinationDir string, desc ocispec.Descriptor) error {
b, err := o.FetchLayer(ctx, desc)
vr, err := o.FetchLayerReader(ctx, desc)
if err != nil {
return err
}
Expand All @@ -102,7 +104,17 @@ func (o *OrasRemote) PullPath(ctx context.Context, destinationDir string, desc o
return err
}

return os.WriteFile(fullPath, b, helpers.ReadWriteUser)
file, err := os.OpenFile(fullPath, os.O_RDWR|os.O_CREATE|os.O_TRUNC, helpers.ReadWriteUser)
if err != nil {
return err
}
defer file.Close()

if _, err := io.Copy(file, vr); err != nil {
return fmt.Errorf("read failed: %w", err)
}

return vr.Verify()
}

// PullPaths pulls multiple files from the remote repository and saves them to `destinationDir`.
Expand Down
Loading