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// +build linux darwin freebsd
package continuityfs
import (
"io"
"path/filepath"
"github.com/containerd/continuity/driver"
"github.com/opencontainers/go-digest"
)
// FileContentProvider is an object which is used to fetch
// data and inode information about a path or digest.
// TODO(dmcgowan): Update GetContentPath to provide a
// filehandle or ReadWriteCloser.
type FileContentProvider interface {
Path(string, digest.Digest) (string, error)
Open(string, digest.Digest) (io.ReadCloser, error)
}
type fsContentProvider struct {
root string
driver driver.Driver
}
// NewFSFileContentProvider creates a new content provider which
// gets content from a directory on an existing filesystem based
// on the resource path.
func NewFSFileContentProvider(root string, driver driver.Driver) FileContentProvider {
return &fsContentProvider{
root: root,
driver: driver,
}
}
func (p *fsContentProvider) Path(path string, dgst digest.Digest) (string, error) {
return filepath.Join(p.root, path), nil
}
func (p *fsContentProvider) Open(path string, dgst digest.Digest) (io.ReadCloser, error) {
return p.driver.Open(filepath.Join(p.root, path))
}
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