vendor: initial vendor

Signed-off-by: Tonis Tiigi <tonistiigi@gmail.com>

vendor/github.com/docker/cli/internal/containerizedengine/update.go

@@ -0,0 +1,183 @@
+package containerizedengine
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"strings"
+
+	"github.com/containerd/containerd"
+	"github.com/containerd/containerd/content"
+	"github.com/containerd/containerd/errdefs"
+	"github.com/containerd/containerd/images"
+	"github.com/containerd/containerd/namespaces"
+	"github.com/docker/cli/internal/versions"
+	clitypes "github.com/docker/cli/types"
+	"github.com/docker/distribution/reference"
+	"github.com/docker/docker/api/types"
+	ver "github.com/hashicorp/go-version"
+	"github.com/opencontainers/image-spec/specs-go/v1"
+	"github.com/pkg/errors"
+)
+
+// ActivateEngine will switch the image from the CE to EE image
+func (c *baseClient) ActivateEngine(ctx context.Context, opts clitypes.EngineInitOptions, out clitypes.OutStream,
+	authConfig *types.AuthConfig) error {
+
+	// If the user didn't specify an image, determine the correct enterprise image to use
+	if opts.EngineImage == "" {
+		localMetadata, err := versions.GetCurrentRuntimeMetadata(opts.RuntimeMetadataDir)
+		if err != nil {
+			return errors.Wrap(err, "unable to determine the installed engine version. Specify which engine image to update with --engine-image")
+		}
+
+		engineImage := localMetadata.EngineImage
+		if engineImage == clitypes.EnterpriseEngineImage || engineImage == clitypes.CommunityEngineImage {
+			opts.EngineImage = clitypes.EnterpriseEngineImage
+		} else {
+			// Chop off the standard prefix and retain any trailing OS specific image details
+			// e.g., engine-community-dm -> engine-enterprise-dm
+			engineImage = strings.TrimPrefix(engineImage, clitypes.EnterpriseEngineImage)
+			engineImage = strings.TrimPrefix(engineImage, clitypes.CommunityEngineImage)
+			opts.EngineImage = clitypes.EnterpriseEngineImage + engineImage
+		}
+	}
+
+	ctx = namespaces.WithNamespace(ctx, engineNamespace)
+	return c.DoUpdate(ctx, opts, out, authConfig)
+}
+
+// DoUpdate performs the underlying engine update
+func (c *baseClient) DoUpdate(ctx context.Context, opts clitypes.EngineInitOptions, out clitypes.OutStream,
+	authConfig *types.AuthConfig) error {
+
+	ctx = namespaces.WithNamespace(ctx, engineNamespace)
+	if opts.EngineVersion == "" {
+		// TODO - Future enhancement: This could be improved to be
+		// smart about figuring out the latest patch rev for the
+		// current engine version and automatically apply it so users
+		// could stay in sync by simply having a scheduled
+		// `docker engine update`
+		return fmt.Errorf("pick the version you want to update to with --version")
+	}
+	var localMetadata *clitypes.RuntimeMetadata
+	if opts.EngineImage == "" {
+		var err error
+		localMetadata, err = versions.GetCurrentRuntimeMetadata(opts.RuntimeMetadataDir)
+		if err != nil {
+			return errors.Wrap(err, "unable to determine the installed engine version. Specify which engine image to update with --engine-image set to 'engine-community' or 'engine-enterprise'")
+		}
+		opts.EngineImage = localMetadata.EngineImage
+	}
+
+	imageName := fmt.Sprintf("%s/%s:%s", opts.RegistryPrefix, opts.EngineImage, opts.EngineVersion)
+
+	// Look for desired image
+	image, err := c.cclient.GetImage(ctx, imageName)
+	if err != nil {
+		if errdefs.IsNotFound(err) {
+			image, err = c.pullWithAuth(ctx, imageName, out, authConfig)
+			if err != nil {
+				return errors.Wrapf(err, "unable to pull image %s", imageName)
+			}
+		} else {
+			return errors.Wrapf(err, "unable to check for image %s", imageName)
+		}
+	}
+
+	// Make sure we're safe to proceed
+	newMetadata, err := c.PreflightCheck(ctx, image)
+	if err != nil {
+		return err
+	}
+	if localMetadata != nil {
+		if localMetadata.Platform != newMetadata.Platform {
+			fmt.Fprintf(out, "\nNotice: you have switched to \"%s\".  Refer to %s for update instructions.\n\n", newMetadata.Platform, getReleaseNotesURL(imageName))
+		}
+	}
+
+	if err := c.cclient.Install(ctx, image, containerd.WithInstallReplace, containerd.WithInstallPath("/usr")); err != nil {
+		return err
+	}
+
+	return versions.WriteRuntimeMetadata(opts.RuntimeMetadataDir, newMetadata)
+}
+
+// PreflightCheck verifies the specified image is compatible with the local system before proceeding to update/activate
+// If things look good, the RuntimeMetadata for the new image is returned and can be written out to the host
+func (c *baseClient) PreflightCheck(ctx context.Context, image containerd.Image) (*clitypes.RuntimeMetadata, error) {
+	var metadata clitypes.RuntimeMetadata
+	ic, err := image.Config(ctx)
+	if err != nil {
+		return nil, err
+	}
+	var (
+		ociimage v1.Image
+		config   v1.ImageConfig
+	)
+	switch ic.MediaType {
+	case v1.MediaTypeImageConfig, images.MediaTypeDockerSchema2Config:
+		p, err := content.ReadBlob(ctx, image.ContentStore(), ic)
+		if err != nil {
+			return nil, err
+		}
+
+		if err := json.Unmarshal(p, &ociimage); err != nil {
+			return nil, err
+		}
+		config = ociimage.Config
+	default:
+		return nil, fmt.Errorf("unknown image %s config media type %s", image.Name(), ic.MediaType)
+	}
+
+	metadataString, ok := config.Labels["com.docker."+clitypes.RuntimeMetadataName]
+	if !ok {
+		return nil, fmt.Errorf("image %s does not contain runtime metadata label %s", image.Name(), clitypes.RuntimeMetadataName)
+	}
+	err = json.Unmarshal([]byte(metadataString), &metadata)
+	if err != nil {
+		return nil, errors.Wrapf(err, "malformed runtime metadata file in %s", image.Name())
+	}
+
+	// Current CLI only supports host install runtime
+	if metadata.Runtime != "host_install" {
+		return nil, fmt.Errorf("unsupported daemon image: %s\nConsult the release notes at %s for upgrade instructions", metadata.Runtime, getReleaseNotesURL(image.Name()))
+	}
+
+	// Verify local containerd is new enough
+	localVersion, err := c.cclient.Version(ctx)
+	if err != nil {
+		return nil, err
+	}
+	if metadata.ContainerdMinVersion != "" {
+		lv, err := ver.NewVersion(localVersion.Version)
+		if err != nil {
+			return nil, err
+		}
+		mv, err := ver.NewVersion(metadata.ContainerdMinVersion)
+		if err != nil {
+			return nil, err
+		}
+		if lv.LessThan(mv) {
+			return nil, fmt.Errorf("local containerd is too old: %s - this engine version requires %s or newer.\nConsult the release notes at %s for upgrade instructions",
+				localVersion.Version, metadata.ContainerdMinVersion, getReleaseNotesURL(image.Name()))
+		}
+	} // If omitted on metadata, no hard dependency on containerd version beyond 18.09 baseline
+
+	// All checks look OK, proceed with update
+	return &metadata, nil
+}
+
+// getReleaseNotesURL returns a release notes url
+// If the image name does not contain a version tag, the base release notes URL is returned
+func getReleaseNotesURL(imageName string) string {
+	versionTag := ""
+	distributionRef, err := reference.ParseNormalizedNamed(imageName)
+	if err == nil {
+		taggedRef, ok := distributionRef.(reference.NamedTagged)
+		if ok {
+			versionTag = taggedRef.Tag()
+		}
+	}
+	return fmt.Sprintf("%s/%s", clitypes.ReleaseNotePrefix, versionTag)
+}