diff options
Diffstat (limited to 'vendor/github.com/projectatomic/buildah/pull.go')
| -rw-r--r-- | vendor/github.com/projectatomic/buildah/pull.go | 37 |
1 files changed, 30 insertions, 7 deletions
diff --git a/vendor/github.com/projectatomic/buildah/pull.go b/vendor/github.com/projectatomic/buildah/pull.go index e9ce03f02..48d7f76ed 100644 --- a/vendor/github.com/projectatomic/buildah/pull.go +++ b/vendor/github.com/projectatomic/buildah/pull.go @@ -2,6 +2,7 @@ package buildah import ( "context" + "io" "strings" cp "github.com/containers/image/copy" @@ -20,6 +21,28 @@ import ( "github.com/sirupsen/logrus" ) +// PullOptions can be used to alter how an image is copied in from somewhere. +type PullOptions struct { + // SignaturePolicyPath specifies an override location for the signature + // policy which should be used for verifying the new image as it is + // being written. Except in specific circumstances, no value should be + // specified, indicating that the shared, system-wide default policy + // should be used. + SignaturePolicyPath string + // ReportWriter is an io.Writer which will be used to log the writing + // of the new image. + ReportWriter io.Writer + // Store is the local storage store which holds the source image. + Store storage.Store + // github.com/containers/image/types SystemContext to hold credentials + // and other authentication/authorization information. + SystemContext *types.SystemContext + // Transport is a value which is prepended to the image's name, if the + // image name alone can not be resolved to a reference to a source + // image. No separator is implicitly added. + Transport string +} + func localImageNameForReference(ctx context.Context, store storage.Store, srcRef types.ImageReference, spec string) (string, error) { if srcRef == nil { return "", errors.Errorf("reference to image is empty") @@ -112,7 +135,13 @@ func localImageNameForReference(ctx context.Context, store storage.Store, srcRef return name, nil } -func pullImage(ctx context.Context, store storage.Store, imageName string, options BuilderOptions, sc *types.SystemContext) (types.ImageReference, error) { +// Pull copies the contents of the image from somewhere else. +func Pull(ctx context.Context, imageName string, options PullOptions) (types.ImageReference, error) { + systemContext := getSystemContext(options.SystemContext, options.SignaturePolicyPath) + return pullImage(ctx, options.Store, imageName, options, systemContext) +} + +func pullImage(ctx context.Context, store storage.Store, imageName string, options PullOptions, sc *types.SystemContext) (types.ImageReference, error) { spec := imageName srcRef, err := alltransports.ParseImageName(spec) if err != nil { @@ -144,12 +173,6 @@ func pullImage(ctx context.Context, store storage.Store, imageName string, optio return nil, errors.Wrapf(err, "error parsing image name %q", destName) } - img, err := srcRef.NewImageSource(ctx, sc) - if err != nil { - return nil, errors.Wrapf(err, "error initializing %q as an image source", spec) - } - img.Close() - policy, err := signature.DefaultPolicy(sc) if err != nil { return nil, errors.Wrapf(err, "error obtaining default signature policy") |