94 lines
1.9 KiB
Go
94 lines
1.9 KiB
Go
package rpc
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import (
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"log"
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"net/rpc"
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"github.com/hashicorp/packer/packer"
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)
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// An implementation of packer.Ui where the Ui is actually executed
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// over an RPC connection.
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type Ui struct {
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client *rpc.Client
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endpoint string
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}
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// UiServer wraps a packer.Ui implementation and makes it exportable
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// as part of a Golang RPC server.
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type UiServer struct {
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ui packer.Ui
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}
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// The arguments sent to Ui.Machine
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type UiMachineArgs struct {
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Category string
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Args []string
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}
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func (u *Ui) Ask(query string) (result string, err error) {
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err = u.client.Call("Ui.Ask", query, &result)
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return
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}
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func (u *Ui) Error(message string) {
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if err := u.client.Call("Ui.Error", message, new(interface{})); err != nil {
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log.Printf("Error in Ui RPC call: %s", err)
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}
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}
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func (u *Ui) Machine(t string, args ...string) {
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rpcArgs := &UiMachineArgs{
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Category: t,
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Args: args,
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}
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if err := u.client.Call("Ui.Machine", rpcArgs, new(interface{})); err != nil {
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log.Printf("Error in Ui RPC call: %s", err)
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}
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}
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func (u *Ui) Message(message string) {
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if err := u.client.Call("Ui.Message", message, new(interface{})); err != nil {
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log.Printf("Error in Ui RPC call: %s", err)
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}
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}
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func (u *Ui) Say(message string) {
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if err := u.client.Call("Ui.Say", message, new(interface{})); err != nil {
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log.Printf("Error in Ui RPC call: %s", err)
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}
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}
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func (u *UiServer) Ask(query string, reply *string) (err error) {
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*reply, err = u.ui.Ask(query)
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return
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}
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func (u *UiServer) Error(message *string, reply *interface{}) error {
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u.ui.Error(*message)
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*reply = nil
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return nil
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}
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func (u *UiServer) Machine(args *UiMachineArgs, reply *interface{}) error {
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u.ui.Machine(args.Category, args.Args...)
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*reply = nil
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return nil
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}
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func (u *UiServer) Message(message *string, reply *interface{}) error {
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u.ui.Message(*message)
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*reply = nil
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return nil
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}
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func (u *UiServer) Say(message *string, reply *interface{}) error {
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u.ui.Say(*message)
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*reply = nil
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return nil
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}
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