dotcloud/docker

package client // import "github.com/docker/docker/client"

import (
    "context"
    "encoding/json"
    "net/http"
    "net/url"

    "github.com/docker/docker/api/types/registry"
)

// DistributionInspect returns the image digest with the full manifest.
func (cli *Client) DistributionInspect(ctx context.Context, imageRef, encodedRegistryAuth string) (registry.DistributionInspect, error) {
    // Contact the registry to retrieve digest and platform information
    var distributionInspect registry.DistributionInspect
    if imageRef == "" {
        return distributionInspect, objectNotFoundError{object: "distribution", id: imageRef}
    }

    if err := cli.NewVersionError(ctx, "1.30", "distribution inspect"); err != nil {
        return distributionInspect, err
    }

    var headers http.Header
    if encodedRegistryAuth != "" {
        headers = http.Header{
            registry.AuthHeader: {encodedRegistryAuth},
        }
    }

    resp, err := cli.get(ctx, "/distribution/"+imageRef+"/json", url.Values{}, headers)
    defer ensureReaderClosed(resp)
    if err != nil {
        return distributionInspect, err
    }

    err = json.NewDecoder(resp.body).Decode(&distributionInspect)
    return distributionInspect, err
}