dotcloud/docker

package images // import "github.com/docker/docker/daemon/images"

import (
    "context"
    "encoding/json"
    "io"
    "time"

    "github.com/containerd/platforms"
    "github.com/distribution/reference"
    "github.com/docker/docker/api/types/container"
    "github.com/docker/docker/api/types/events"
    "github.com/docker/docker/builder/dockerfile"
    "github.com/docker/docker/dockerversion"
    "github.com/docker/docker/errdefs"
    "github.com/docker/docker/image"
    "github.com/docker/docker/layer"
    "github.com/docker/docker/pkg/archive"
    ocispec "github.com/opencontainers/image-spec/specs-go/v1"
)

// ImportImage imports an image, getting the archived layer data from layerReader.
// Uncompressed layer archive is passed to the layerStore and handled by the
// underlying graph driver.
// Image is tagged with the given reference.
// If the platform is nil, the default host platform is used.
// Message is used as the image's history comment.
// Image configuration is derived from the dockerfile instructions in changes.
func (i *ImageService) ImportImage(ctx context.Context, newRef reference.Named, platform *ocispec.Platform, msg string, layerReader io.Reader, changes []string) (image.ID, error) {
    if platform == nil {
        def := platforms.DefaultSpec()
        platform = &def
    }
    if err := image.CheckOS(platform.OS); err != nil {
        return "", err
    }

    config, err := dockerfile.BuildFromConfig(ctx, &container.Config{}, changes, platform.OS)
    if err != nil {
        return "", errdefs.InvalidParameter(err)
    }

    inflatedLayerData, err := archive.DecompressStream(layerReader)
    if err != nil {
        return "", err
    }
    l, err := i.layerStore.Register(inflatedLayerData, "")
    if err != nil {
        return "", err
    }
    defer layer.ReleaseAndLog(i.layerStore, l)

    created := time.Now().UTC()
    imgConfig, err := json.Marshal(&image.Image{
        V1Image: image.V1Image{
            DockerVersion: dockerversion.Version,
            Config:        config,
            Architecture:  platform.Architecture,
            Variant:       platform.Variant,
            OS:            platform.OS,
            Created:       &created,
            Comment:       msg,
        },
        RootFS: &image.RootFS{
            Type:    "layers",
            DiffIDs: []layer.DiffID{l.DiffID()},
        },
        History: []image.History{{
            Created: &created,
            Comment: msg,
        }},
    })
    if err != nil {
        return "", err
    }

    id, err := i.imageStore.Create(imgConfig)
    if err != nil {
        return "", err
    }

    if newRef != nil {
        if err := i.TagImage(ctx, id, newRef); err != nil {
            return "", err
        }
    }

    i.LogImageEvent(id.String(), id.String(), events.ActionImport)
    return id, nil
}