60 lines
1.2 KiB
Go
60 lines
1.2 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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// A ClientCommand is an implementation of the Command interface where the
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// command is actually executed over an RPC connection.
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type ClientCommand struct {
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client *rpc.Client
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}
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// A ServerCommand wraps a Command and makes it exportable as part
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// of a Golang RPC server.
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type ServerCommand struct {
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command packer.Command
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}
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type CommandRunArgs struct {
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Env packer.Environment
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Args []string
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}
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type CommandSynopsisArgs byte
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func Command(client *rpc.Client) *ClientCommand {
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return &ClientCommand{client}
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}
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func (c *ClientCommand) Run(env packer.Environment, args []string) (result int) {
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// TODO: Environment
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rpcArgs := &CommandRunArgs{nil, args}
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err := c.client.Call("Command.Run", rpcArgs, &result)
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if err != nil {
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panic(err)
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}
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return
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}
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func (c *ClientCommand) Synopsis() (result string) {
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err := c.client.Call("Command.Synopsis", CommandSynopsisArgs(0), &result)
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if err != nil {
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panic(err)
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}
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return
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}
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func (c *ServerCommand) Run(args *CommandRunArgs, reply *int) error {
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*reply = c.command.Run(args.Env, args.Args)
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return nil
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}
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func (c *ServerCommand) Synopsis(args *CommandSynopsisArgs, reply *string) error {
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*reply = c.command.Synopsis()
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return nil
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}
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