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// Copyright (c) 2020, Sylabs Inc. All rights reserved.
// This software is licensed under a 3-clause BSD license. Please consult the
// LICENSE.md file distributed with the sources of this project regarding your
// rights to use or distribute this software.
package sources
import (
"context"
"fmt"
"github.com/sylabs/singularity/v4/internal/pkg/client/oras"
"github.com/sylabs/singularity/v4/pkg/build/types"
"github.com/sylabs/singularity/v4/pkg/sylog"
)
// OrasConveyorPacker only needs to hold a packer to pack the image it pulls
// as well as extra information about the library it's pulling from.
type OrasConveyorPacker struct {
LocalPacker
}
// Get downloads container from Singularityhub
func (cp *OrasConveyorPacker) Get(ctx context.Context, b *types.Bundle) (err error) {
sylog.Debugf("Getting container from registry using ORAS")
// uri with leading // for oras handlers to consume
ref := "//" + b.Recipe.Header["from"]
// full uri for name determination and output
fullRef := "oras:" + ref
imagePath, err := oras.Pull(ctx, b.Opts.ImgCache, fullRef, b.Opts.TmpDir, b.Opts.DockerAuthConfig)
if err != nil {
return fmt.Errorf("while fetching library image: %v", err)
}
// insert base metadata before unpacking fs
if err = makeBaseEnv(b.RootfsPath); err != nil {
return fmt.Errorf("while inserting base environment: %v", err)
}
cp.LocalPacker, err = GetLocalPacker(ctx, imagePath, b)
return err
}
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