forked from vmware-archive/atc
/
versioned_source.go
109 lines (83 loc) · 2.26 KB
/
versioned_source.go
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package resource
import (
"io"
"path"
"code.cloudfoundry.org/garden"
"github.com/concourse/atc"
"github.com/concourse/atc/worker"
)
//go:generate counterfeiter . VersionedSource
type VersionedSource interface {
Version() atc.Version
Metadata() []atc.MetadataField
StreamOut(string) (io.ReadCloser, error)
StreamIn(string, io.Reader) error
Volume() worker.Volume
}
type versionResult struct {
Version atc.Version `json:"version"`
Metadata []atc.MetadataField `json:"metadata,omitempty"`
}
type putVersionedSource struct {
versionResult versionResult
container garden.Container
resourceDir string
}
func (vs *putVersionedSource) Version() atc.Version {
return vs.versionResult.Version
}
func (vs *putVersionedSource) Metadata() []atc.MetadataField {
return vs.versionResult.Metadata
}
func (vs *putVersionedSource) StreamOut(src string) (io.ReadCloser, error) {
return vs.container.StreamOut(garden.StreamOutSpec{
// don't use path.Join; it strips trailing slashes
Path: vs.resourceDir + "/" + src,
})
}
func (vs *putVersionedSource) Volume() worker.Volume {
return nil
}
func (vs *putVersionedSource) StreamIn(dst string, src io.Reader) error {
return vs.container.StreamIn(garden.StreamInSpec{
Path: path.Join(vs.resourceDir, dst),
TarStream: src,
})
}
func NewGetVersionedSource(volume worker.Volume, version atc.Version, metadata []atc.MetadataField) VersionedSource {
return &getVersionedSource{
volume: volume,
resourceDir: ResourcesDir("get"),
versionResult: versionResult{
Version: version,
Metadata: metadata,
},
}
}
type getVersionedSource struct {
versionResult versionResult
volume worker.Volume
resourceDir string
}
func (vs *getVersionedSource) Version() atc.Version {
return vs.versionResult.Version
}
func (vs *getVersionedSource) Metadata() []atc.MetadataField {
return vs.versionResult.Metadata
}
func (vs *getVersionedSource) StreamOut(src string) (io.ReadCloser, error) {
readCloser, err := vs.volume.StreamOut(src)
if err != nil {
return nil, err
}
return readCloser, err
}
func (vs *getVersionedSource) StreamIn(dst string, src io.Reader) error {
return vs.volume.StreamIn(
path.Join(vs.resourceDir, dst),
src,
)
}
func (vs *getVersionedSource) Volume() worker.Volume {
return vs.volume
}