// initPlugin initializes the authorization plugin if needed
func (a *authorizationPlugin) initPlugin() error {
// Lazy loading of plugins
var err error
a.once.Do(func() {
if a.plugin == nil {
var plugin plugingetter.CompatPlugin
var e error
if pg := GetPluginGetter(); pg != nil {
plugin, e = pg.Get(a.name, AuthZApiImplements, plugingetter.Lookup)
} else {
plugin, e = plugins.Get(a.name, AuthZApiImplements)
}
if e != nil {
err = e
return
}
a.plugin = plugin.Client()
}
})
return err
}
func newPluginDriver(name, home string, opts []string, pl plugingetter.CompatPlugin) (Driver, error) {
proxy := &graphDriverProxy{name, pl.Client(), pl}
return proxy, proxy.Init(filepath.Join(home, name), opts)
}