52 lines
1.1 KiB
Go
52 lines
1.1 KiB
Go
package rpc
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import (
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"github.com/mitchellh/packer/packer"
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"net/rpc"
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)
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// An implementation of packer.Hook where the hook is actually executed
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// over an RPC connection.
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type hook struct {
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client *rpc.Client
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}
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// HookServer wraps a packer.Hook implementation and makes it exportable
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// as part of a Golang RPC server.
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type HookServer struct {
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hook packer.Hook
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}
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type HookRunArgs struct {
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Name string
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Data interface{}
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RPCAddress string
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}
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func Hook(client *rpc.Client) *hook {
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return &hook{client}
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}
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func (h *hook) Run(name string, ui packer.Ui, comm packer.Communicator, data interface{}) {
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server := rpc.NewServer()
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RegisterCommunicator(server, comm)
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RegisterUi(server, ui)
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address := serveSingleConn(server)
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args := &HookRunArgs{name, data, address}
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h.client.Call("Hook.Run", args, new(interface{}))
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return
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}
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func (h *HookServer) Run(args *HookRunArgs, reply *interface{}) error {
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client, err := rpc.Dial("tcp", args.RPCAddress)
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if err != nil {
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return err
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}
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h.hook.Run(args.Name, &Ui{client}, Communicator(client), args.Data)
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*reply = nil
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return nil
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}
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