ActivityRust is a crate that allows a user to manage the structures used by common implementations of the ActivityPub protocol. In order to do so, it tries to be compilant with:

• The ActivityStream Vocabulary, as defined here
• The ActivityPub extensions, as defined here
• Parts of the W3ID Security extension, as defined here
• The WebFinger schema ActivityRust allows creation and edition of these structures, but can also serialize and deserialize them to json.

extern crate activityrust;
// Import the required traits
use activityrust::traits::properties::*;

use activityrust::entities::actortypes::ActivityStreamPerson;
use url::Url;

fn main() {

  let mut activity = ActivityStreamPerson::create();
  let activity_url = Url::parse("http://test.test").unwrap();
  activity.set_id(activity_url);

}

As ActivityStream, ActivityRust supports setting null values for properties. In practice, it means that you can do this:

  activity.set_summary::<String, Option<String>>(None);

ActivityRust supports the serde module, and all entities can be deserialized to their proper types and serialized to JSON.