handle_depsonly.go

package mariner2

import (
	"context"
	"strings"

	"github.com/Azure/dalec"
	"github.com/Azure/dalec/frontend"
	"github.com/moby/buildkit/client/llb"
	gwclient "github.com/moby/buildkit/frontend/gateway/client"
	ocispecs "github.com/opencontainers/image-spec/specs-go/v1"
)

func handleDepsOnly(ctx context.Context, client gwclient.Client) (*gwclient.Result, error) {
	return frontend.BuildWithPlatform(ctx, client, func(ctx context.Context, client gwclient.Client, platform *ocispecs.Platform, spec *dalec.Spec, targetKey string) (gwclient.Reference, *dalec.DockerImageSpec, error) {
		pg := dalec.ProgressGroup("Build mariner2 deps-only container: " + spec.Name)
		baseImg := getWorkerImage(client, pg)
		rpmDir := baseImg.Run(
			shArgs(`set -ex; dir="/tmp/rpms/RPMS/$(uname -m)"; mkdir -p "${dir}"; tdnf install -y --releasever=2.0 --downloadonly --alldeps --downloaddir "${dir}" `+strings.Join(spec.GetRuntimeDeps(targetKey), " ")),
			defaultTdnfCacheMount(),
			pg,
		).
			AddMount("/tmp/rpms", llb.Scratch())

		sOpt, err := frontend.SourceOptFromClient(ctx, client)
		if err != nil {
			return nil, nil, err
		}
		st, err := specToContainerLLB(spec, targetKey, baseImg, rpmDir, sOpt, pg)
		if err != nil {
			return nil, nil, err
		}

		def, err := st.Marshal(ctx, pg)
		if err != nil {
			return nil, nil, err
		}

		res, err := client.Solve(ctx, gwclient.SolveRequest{
			Definition: def.ToPB(),
		})
		if err != nil {
			return nil, nil, err
		}

		base := frontend.GetBaseOutputImage(spec, targetKey, marinerDistrolessRef)
		img, err := frontend.BuildImageConfig(ctx, client, spec, targetKey, base)
		if err != nil {
			return nil, nil, err
		}

		ref, err := res.SingleRef()
		if err != nil {
			return nil, nil, err
		}

		return ref, img, nil
	})
}