packer-cn/packer/rpc/ui.go

36 lines
684 B
Go

package rpc
import (
"github.com/mitchellh/packer/packer"
"net/rpc"
)
// An implementation of packer.Ui where the Ui is actually executed
// over an RPC connection.
type Ui struct {
client *rpc.Client
}
// UiServer wraps a packer.Ui implementation and makes it exportable
// as part of a Golang RPC server.
type UiServer struct {
ui packer.Ui
}
type UiSayArgs struct {
Format string
Vars []interface{}
}
func (u *Ui) Say(format string, a ...interface{}) {
args := &UiSayArgs{format, a}
u.client.Call("Ui.Say", args, new(interface{}))
}
func (u *UiServer) Say(args *UiSayArgs, reply *interface{}) error {
u.ui.Say(args.Format, args.Vars...)
*reply = nil
return nil
}