Rust: How do you implement a plugin system?

1trait Plugin {
2    fn name(&self) -> &str;
3    fn execute(&self, input: &str) -> String;
4}
5
6struct PluginRegistry {
7    plugins: Vec<Box<dyn Plugin>>,
8}
9
10impl PluginRegistry {
11    fn register(&mut self, plugin: Box<dyn Plugin>) {
12        self.plugins.push(plugin);
13    }
14
15    fn execute_all(&self, input: &str) {
16        for plugin in &self.plugins {
17            println!("{}: {}", plugin.name(), plugin.execute(input));
18        }
19    }
20}

1use libloading::Library;
2
3unsafe {
4    let lib = Library::new("plugin.so").unwrap();
5    let func: Symbol<fn() -> Box<dyn Plugin>> =
6        lib.get(b"create_plugin").unwrap();
7    let plugin = func();
8}