Merge pull request docker#11051 from ndeloof/warn_remote_disabled

warn user remote resource is disabled

cmd/compose/compose.go

@@ -254,29 +254,17 @@ func (o *ProjectOptions) ToProject(dockerCli command.Cli, services []string, po
 }
 
 func (o *ProjectOptions) configureRemoteLoaders(dockerCli command.Cli, po []cli.ProjectOptionsFn) ([]cli.ProjectOptionsFn, error) {
-	enabled, err := remote.GitRemoteLoaderEnabled()
+	git, err := remote.NewGitRemoteLoader(o.Offline)
 	if err != nil {
 		return nil, err
 	}
-	if enabled {
-		git, err := remote.NewGitRemoteLoader(o.Offline)
-		if err != nil {
-			return nil, err
-		}
-		po = append(po, cli.WithResourceLoader(git))
-	}
 
-	enabled, err = remote.OCIRemoteLoaderEnabled()
+	oci, err := remote.NewOCIRemoteLoader(dockerCli, o.Offline)
 	if err != nil {
 		return nil, err
 	}
-	if enabled {
-		git, err := remote.NewOCIRemoteLoader(dockerCli, o.Offline)
-		if err != nil {
-			return nil, err
-		}
-		po = append(po, cli.WithResourceLoader(git))
-	}
+
+	po = append(po, cli.WithResourceLoader(git), cli.WithResourceLoader(oci))
 	return po, nil
 }
 

pkg/remote/git.go

@@ -26,16 +26,17 @@ import (
 	"strconv"
 
 	"github.com/adrg/xdg"
-
 	"github.com/compose-spec/compose-go/cli"
 	"github.com/compose-spec/compose-go/loader"
 	"github.com/compose-spec/compose-go/types"
 	"github.com/docker/compose/v2/pkg/api"
 	"github.com/moby/buildkit/util/gitutil"
 )
 
-func GitRemoteLoaderEnabled() (bool, error) {
-	if v := os.Getenv("COMPOSE_EXPERIMENTAL_GIT_REMOTE"); v != "" {
+const GIT_REMOTE_ENABLED = "COMPOSE_EXPERIMENTAL_GIT_REMOTE"
+
+func gitRemoteLoaderEnabled() (bool, error) {
+	if v := os.Getenv(GIT_REMOTE_ENABLED); v != "" {
 		enabled, err := strconv.ParseBool(v)
 		if err != nil {
 			return false, fmt.Errorf("COMPOSE_EXPERIMENTAL_GIT_REMOTE environment variable expects boolean value: %w", err)
@@ -74,6 +75,14 @@ func (g gitRemoteLoader) Accept(path string) bool {
 var commitSHA = regexp.MustCompile(`^[a-f0-9]{40}$`)
 
 func (g gitRemoteLoader) Load(ctx context.Context, path string) (string, error) {
+	enabled, err := gitRemoteLoaderEnabled()
+	if err != nil {
+		return "", err
+	}
+	if !enabled {
+		return "", fmt.Errorf("experimental git remote resource is disabled. %q must be set", GIT_REMOTE_ENABLED)
+	}
+
 	ref, err := gitutil.ParseGitRef(path)
 	if err != nil {
 		return "", err

pkg/remote/oci.go

@@ -26,17 +26,18 @@ import (
 	"strings"
 
 	"github.com/adrg/xdg"
+	"github.com/compose-spec/compose-go/loader"
 	"github.com/distribution/reference"
 	"github.com/docker/buildx/store/storeutil"
 	"github.com/docker/buildx/util/imagetools"
 	"github.com/docker/cli/cli/command"
 	v1 "github.com/opencontainers/image-spec/specs-go/v1"
-
-	"github.com/compose-spec/compose-go/loader"
 )
 
-func OCIRemoteLoaderEnabled() (bool, error) {
-	if v := os.Getenv("COMPOSE_EXPERIMENTAL_OCI_REMOTE"); v != "" {
+const OCI_REMOTE_ENABLED = "COMPOSE_EXPERIMENTAL_OCI_REMOTE"
+
+func ociRemoteLoaderEnabled() (bool, error) {
+	if v := os.Getenv(OCI_REMOTE_ENABLED); v != "" {
 		enabled, err := strconv.ParseBool(v)
 		if err != nil {
 			return false, fmt.Errorf("COMPOSE_EXPERIMENTAL_OCI_REMOTE environment variable expects boolean value: %w", err)
@@ -76,6 +77,14 @@ func (g ociRemoteLoader) Accept(path string) bool {
 }
 
 func (g ociRemoteLoader) Load(ctx context.Context, path string) (string, error) {
+	enabled, err := ociRemoteLoaderEnabled()
+	if err != nil {
+		return "", err
+	}
+	if !enabled {
+		return "", fmt.Errorf("experimental OCI remote resource is disabled. %q must be set", OCI_REMOTE_ENABLED)
+	}
+
 	if g.offline {
 		return "", nil
 	}
@@ -99,50 +108,57 @@ func (g ociRemoteLoader) Load(ctx context.Context, path string) (string, error)
 	local := filepath.Join(g.cache, descriptor.Digest.Hex())
 	composeFile := filepath.Join(local, "compose.yaml")
 	if _, err = os.Stat(local); os.IsNotExist(err) {
-
-		err = os.MkdirAll(local, 0o700)
+		var manifest v1.Manifest
+		err = json.Unmarshal(content, &manifest)
 		if err != nil {
 			return "", err
 		}
 
-		f, err := os.Create(composeFile)
-		if err != nil {
-			return "", err
+		err2 := g.pullComposeFiles(ctx, local, composeFile, manifest, ref, resolver)
+		if err2 != nil {
+			return "", err2
 		}
-		defer f.Close() //nolint:errcheck
+	}
+	return composeFile, nil
+}
 
-		var manifest v1.Manifest
-		err = json.Unmarshal(content, &manifest)
+func (g ociRemoteLoader) pullComposeFiles(ctx context.Context, local string, composeFile string, manifest v1.Manifest, ref reference.Named, resolver *imagetools.Resolver) error {
+	err := os.MkdirAll(local, 0o700)
+	if err != nil {
+		return err
+	}
+
+	f, err := os.Create(composeFile)
+	if err != nil {
+		return err
+	}
+	defer f.Close() //nolint:errcheck
+
+	if manifest.ArtifactType != "application/vnd.docker.compose.project" {
+		return fmt.Errorf("%s is not a compose project OCI artifact, but %s", ref.String(), manifest.ArtifactType)
+	}
+
+	for i, layer := range manifest.Layers {
+		digested, err := reference.WithDigest(ref, layer.Digest)
 		if err != nil {
-			return "", err
+			return err
 		}
-
-		if manifest.ArtifactType != "application/vnd.docker.compose.project" {
-			return "", fmt.Errorf("%s is not a compose project OCI artifact, but %s", ref.String(), manifest.ArtifactType)
+		content, _, err := resolver.Get(ctx, digested.String())
+		if err != nil {
+			return err
 		}
-
-		for i, layer := range manifest.Layers {
-			digested, err := reference.WithDigest(ref, layer.Digest)
-			if err != nil {
-				return "", err
-			}
-			content, _, err := resolver.Get(ctx, digested.String())
+		if i > 0 {
+			_, err = f.Write([]byte("\n---\n"))
 			if err != nil {
-				return "", err
-			}
-			if i > 0 {
-				_, err = f.Write([]byte("\n---\n"))
-				if err != nil {
-					return "", err
-				}
-			}
-			_, err = f.Write(content)
-			if err != nil {
-				return "", err
+				return err
 			}
 		}
+		_, err = f.Write(content)
+		if err != nil {
+			return err
+		}
 	}
-	return composeFile, nil
+	return nil
 }
 
 var _ loader.ResourceLoader = ociRemoteLoader{}