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image_factory.go
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/
image_factory.go
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package worker
import (
"io"
"io/ioutil"
"os"
"code.cloudfoundry.org/lager"
"github.com/concourse/atc"
"github.com/concourse/atc/dbng"
)
//go:generate counterfeiter . ImageFactory
type ImageFactory interface {
GetImage(
logger lager.Logger,
workerClient Worker,
volumeClient VolumeClient,
imageSpec ImageSpec,
teamID int,
signals <-chan os.Signal,
delegate ImageFetchingDelegate,
resourceUser dbng.ResourceUser,
resourceTypes atc.VersionedResourceTypes,
) (Image, error)
}
type FetchedImage struct {
Metadata ImageMetadata
Version atc.Version
URL string
}
//go:generate counterfeiter . Image
type Image interface {
FetchForContainer(
logger lager.Logger,
container dbng.CreatingContainer,
) (FetchedImage, error)
}
//go:generate counterfeiter . ImageFetchingDelegate
type ImageFetchingDelegate interface {
Stderr() io.Writer
ImageVersionDetermined(ResourceCacheIdentifier) error
}
type ImageMetadata struct {
Env []string `json:"env"`
User string `json:"user"`
}
type NoopImageFetchingDelegate struct{}
func (NoopImageFetchingDelegate) Stderr() io.Writer { return ioutil.Discard }
func (NoopImageFetchingDelegate) ImageVersionDetermined(ResourceCacheIdentifier) error { return nil }