packer-cn/packer/rpc/ui.go

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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
}
func (u *Ui) Ask(query string) (result string, err error) {
err = u.client.Call("Ui.Ask", query, &result)
return
}
func (u *Ui) Error(message string) {
if err := u.client.Call("Ui.Error", message, new(interface{})); err != nil {
panic(err)
}
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}
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func (u *Ui) Message(message string) {
if err := u.client.Call("Ui.Message", message, new(interface{})); err != nil {
panic(err)
}
}
func (u *Ui) Say(message string) {
if err := u.client.Call("Ui.Say", message, new(interface{})); err != nil {
panic(err)
}
}
func (u *UiServer) Ask(query string, reply *string) (err error) {
*reply, err = u.ui.Ask(query)
return
}
func (u *UiServer) Error(message *string, reply *interface{}) error {
u.ui.Error(*message)
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*reply = nil
return nil
}
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func (u *UiServer) Message(message *string, reply *interface{}) error {
u.ui.Message(*message)
*reply = nil
return nil
}
func (u *UiServer) Say(message *string, reply *interface{}) error {
u.ui.Say(*message)
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*reply = nil
return nil
}