func (p *Plugin) init() {
// redirect stdout
stdout := os.Stdout
os.Stdout = os.Stderr
pio := common.NewPluginIO(os.Stdin, stdout)
p.mpx = ipc.NewMultiplex(pio)
}
func (pc *PluginClient) Start() error {
if pc.proc != nil {
return common.NewPluginError("plugin is already started")
}
pc.proc = exec.Command(pc.File)
stderr, _ := pc.proc.StderrPipe()
stdin, _ := pc.proc.StdinPipe()
stdout, _ := pc.proc.StdoutPipe()
fmt.Printf("Starting plugin %s\n", pc.File)
err := pc.proc.Start()
if err != nil {
return err
}
go common.StdErrForward(stderr)
pio := common.NewPluginIO(stdout, stdin)
pc.mpx = ipc.NewMultiplex(pio)
rpcwriter := pc.mpx.RawWriterChannel("rpcw")
rpcreader := pc.mpx.RawReaderChannel("rpcr")
pc.RPC = rpc.NewClient(common.NewPluginIO(rpcreader, rpcwriter))
if !pc.VerifyRPC() {
return common.NewPluginError("plugin is not a valid plugin or is not responding")
}
return nil
}