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// Copyright (c) 2020, Control Command Inc. All rights reserved.
// Copyright (c) 2018-2023, 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"
golog "github.com/go-log/log"
"github.com/sylabs/scs-library-client/client"
"github.com/sylabs/singularity/v4/internal/pkg/client/library"
"github.com/sylabs/singularity/v4/pkg/build/types"
"github.com/sylabs/singularity/v4/pkg/sylog"
)
// LibraryConveyorPacker 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 LibraryConveyorPacker struct {
b *types.Bundle
LocalPacker
}
// Get downloads container from Sylabs Cloud Library.
func (cp *LibraryConveyorPacker) Get(ctx context.Context, b *types.Bundle) (err error) {
sylog.Debugf("Getting container from Library")
if b.Opts.ImgCache == nil {
return fmt.Errorf("invalid image cache")
}
cp.b = b
libraryURL := b.Opts.LibraryURL
authToken := b.Opts.LibraryAuthToken
if err = makeBaseEnv(cp.b.RootfsPath); err != nil {
return fmt.Errorf("while inserting base environment: %v", err)
}
// check for custom library from definition
customLib, ok := b.Recipe.Header["library"]
if ok {
sylog.Debugf("Using custom library: %v", customLib)
libraryURL = customLib
}
imageRef, err := library.NormalizeLibraryRef(b.Recipe.Header["from"])
if err != nil {
return fmt.Errorf("error parsing libraryRef: %v", err)
}
if imageRef.Host != "" {
if b.Opts.NoHTTPS {
libraryURL = "http://" + imageRef.Host
} else {
libraryURL = "https://" + imageRef.Host
}
}
sylog.Debugf("LibraryURL: %v", libraryURL)
sylog.Debugf("LibraryRef: %v", imageRef.String())
libraryConfig := &client.Config{
BaseURL: libraryURL,
AuthToken: authToken,
Logger: (golog.Logger)(sylog.DebugLogger{}),
}
pullOpts := library.PullOptions{
LibraryConfig: libraryConfig,
TmpDir: cp.b.TmpDir,
Platform: cp.b.Opts.Platform,
}
imagePath, err := library.Pull(ctx, b.Opts.ImgCache, imageRef, pullOpts)
if err != nil {
return fmt.Errorf("while fetching library image: %v", err)
}
// insert base metadata before unpacking fs
if err = makeBaseEnv(cp.b.RootfsPath); err != nil {
return fmt.Errorf("while inserting base environment: %v", err)
}
cp.LocalPacker, err = GetLocalPacker(ctx, imagePath, cp.b)
return err
}
// CleanUp removes any files owned by the conveyorPacker on the filesystem.
func (cp *LibraryConveyorPacker) CleanUp() {
cp.b.Remove()
}
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