func (p *pi) newClient() {
// note if the client is still running we can't p.client.Close() without a data-race
// TODO investigate if there is a better way to clean-up
if p.useJSON {
p.client, p.err = pie.StartProviderCodec(
jsonrpc.NewClientCodec, os.Stderr, p.cmdPath, p.args...)
} else {
p.client, p.err = pie.StartProvider(os.Stderr, p.cmdPath, p.args...)
}
if p.err != nil {
p.err = fmt.Errorf("plugin %#v failed, error %v", *p, p.err)
}
}
func NewMapnik() (*Mapnik, error) {
path, err := exec.LookPath(mapnikPluginName)
if err != nil {
path = filepath.Join(filepath.Dir(os.Args[0]), mapnikPluginName)
path, _ = filepath.Abs(path)
if _, serr := os.Stat(path); serr != nil {
return nil, err
}
}
client, err := pie.StartProvider(os.Stderr, path)
if err != nil {
return nil, err
}
return &Mapnik{client: client}, nil
}