minio/vendor/github.com/inconshreveable/go-update/patcher.go
Harshavardhana eb7c690ea9 Support in-place upgrades of new minio binary and releases. (#4961)
This PR allows 'minio update' to not only shows update banner
but also allows for in-place upgrades.

Updates are done safely by validating the downloaded
sha256 of the binary.

Fixes #4781
2017-12-15 12:33:42 -08:00

25 lines
662 B
Go

package update
import (
"io"
"github.com/inconshreveable/go-update/internal/binarydist"
)
// Patcher defines an interface for applying binary patches to an old item to get an updated item.
type Patcher interface {
Patch(old io.Reader, new io.Writer, patch io.Reader) error
}
type patchFn func(io.Reader, io.Writer, io.Reader) error
func (fn patchFn) Patch(old io.Reader, new io.Writer, patch io.Reader) error {
return fn(old, new, patch)
}
// NewBSDifferPatcher returns a new Patcher that applies binary patches using
// the bsdiff algorithm. See http://www.daemonology.net/bsdiff/
func NewBSDiffPatcher() Patcher {
return patchFn(binarydist.Patch)
}