forked from alemi/upub
docs: document crate a little
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4 changed files with 106 additions and 7 deletions
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@ -1,6 +1,6 @@
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[package]
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name = "apb"
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version = "0.1.0"
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version = "0.1.1"
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edition = "2021"
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authors = [ "alemi <me@alemi.dev>" ]
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description = "Traits and types to handle ActivityPub objects"
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@ -3,13 +3,13 @@
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`apb` implements all [ActivityStreams](https://www.w3.org/TR/activitystreams-core/) types as traits, so that implementing structs don't need to hold all possible fields, but only implement getters for relevant ones
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`apb` also provides a `Node` enum, which can be Empty, Link, Object or Array
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`apb` also provides a `Node<T>` enum, which can represent ActivityPub nodes (empty, link, object, array)
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if the `unstructured` feature is enabled, all traits are implemented for `serde_json::Value`, so that it's possible to manipulate free-form json maps as valid AP objects
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read more in this crate's docs
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if the `orm` feature is enabled, enum types are also database-friendly with sea-orm
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if the `fetch` feature is enabled (together with `unstructured`), `Node`s expose a `async fn fetch(&mut self) -> reqwest::Result<&mut Self>` to dereference remote nodes
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## why
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[upub](https://git.alemi.dev/upub.git) uses these types to implement its federation, but I wanted to modularize apb types. this crate is still work in progress and favors upub's needs, get in touch if you'd like to help or tune apb to your project!
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[upub](https://git.alemi.dev/upub.git) uses these types to implement its federation, but I wanted to modularize apb types
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## state
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this crate is still work in progress and favors upub's needs, get in touch if you'd like to help or tune apb to your project!
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@ -1,3 +1,92 @@
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//! # apb
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//! > traits and types for implementing [ActivityPub](https://www.w3.org/TR/activitypub/)
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//!
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//! The main type this crate exposes is the [Node], which can be:
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//! - [Node::Empty]: not present in object
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//! - [Node::Link]: contains just link to object
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//! - [Node::Object]: contains embedded object
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//! - [Node::Array]: contains array of embedded objects
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//!
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//! Nodes contain AP objects, which implement one or more traits (such as [Object] or [Actor])
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//!
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//! ## features
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//! * `unstructured`: all traits are implemented for [serde_json::Value], so that it's possible to manipulate free-form json maps as valid AP objects
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//! * `orm`: enum types are also database-friendly with sea-orm
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//! * `fetch`: [Node] exposes [Node::fetch] to dereference remote nodes
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//!
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//! ## structure
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//! - **[Base]** | **[BaseMut]** | [BaseType]
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//! - [BaseType::Link] | **[Link]** | **[LinkMut]** | [LinkType]
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//! - [LinkType::Mention]
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//! - [LinkType::Link]
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//! - [BaseType::Object] | **[Object]** | **[ObjectMut]** | [ObjectType]
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//! - [ObjectType::Activity] | **[Activity]** | **[ActivityMut]** | [ActivityType]
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//! - [ActivityType::Accept] | **[Accept]** | **[AcceptMut]** | [AcceptType]
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//! - [AcceptType::TentativeAccept]
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//! - [ActivityType::Add]
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//! - [ActivityType::Announce]
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//! - [ActivityType::Create]
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//! - [ActivityType::Delete]
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//! - [ActivityType::Dislike]
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//! - [ActivityType::Flag]
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//! - [ActivityType::Follow]
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//! - [ActivityType::IntransitiveActivity] | **[IntransitiveActivity]** | **[IntransitiveActivityMut]** | [IntransitiveActivityType]
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//! - [IntransitiveActivityType::IntransitiveActivity]
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//! - [IntransitiveActivityType::Arrive]
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//! - [IntransitiveActivityType::Question]
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//! - [IntransitiveActivityType::Travel]
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//! - [ActivityType::Ignore] | **[Ignore]** | **[IgnoreMut]** | [IgnoreType]
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//! - [IgnoreType::Ignore]
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//! - [IgnoreType::Block]
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//! - [ActivityType::Join]
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//! - [ActivityType::Leave]
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//! - [ActivityType::Like]
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//! - [ActivityType::Listen]
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//! - [ActivityType::Move]
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//! - [ActivityType::Offer] | **[Offer]** | **[OfferMut]** | [OfferType]
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//! - [OfferType::Offer]
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//! - [OfferType::Invite]
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//! - [ActivityType::Read]
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//! - [ActivityType::Reject] | **[Reject]** | **[RejectMut]** | [RejectType]
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//! - [RejectType::Reject]
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//! - [RejectType::TentativeReject]
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//! - [ActivityType::Remove]
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//! - [ActivityType::Undo]
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//! - [ActivityType::Update]
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//! - [ActivityType::View]
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//! - [ObjectType::Actor] | **[Actor]** | **[ActorMut]** | [ActorType] *
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//! - [ActorType::Application]
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//! - [ActorType::Group]
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//! - [ActorType::Organization]
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//! - [ActorType::Person]
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//! - [ObjectType::Article]
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//! - [ObjectType::Collection] | **[Collection]** | **[CollectionMut]** | [CollectionType]
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//! - [CollectionType::Collection]
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//! - [CollectionType::CollectionPage]
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//! - [CollectionType::OrderedCollection]
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//! - [CollectionType::OrderedCollectionPage]
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//! - [ObjectType::Document] | **[Document]** | **[DocumentMut]** | [DocumentType]
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//! - [DocumentType::Document]
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//! - [DocumentType::Audio]
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//! - [DocumentType::Image]
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//! - [DocumentType::Page]
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//! - [DocumentType::Video]
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//! - [ObjectType::Event]
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//! - [ObjectType::Note]
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//! - [ObjectType::Object]
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//! - [ObjectType::Place]
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//! - [ObjectType::Profile]
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//! - [ObjectType::Relationship]
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//! - [ObjectType::Tombstone]
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//! - **[PublicKey]** | **[PublicKeyMut]** \*\*
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//!
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//! *: `Actor` is technically just an object, not really a "subtype"
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//!
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//! **: `PublicKey` is introduced in ActivityPub, it's not part of ActivityStream
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//!
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mod macros;
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pub(crate) use macros::{strenum, getter, setter};
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/// ActivityPub object node, representing either nothing, something, a link to something or
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/// multiple things
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pub enum Node<T : super::Base> {
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Array(Vec<T>), // TODO would be cool to make it Box<[T]> so that Node is just a ptr
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Object(Box<T>),
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@ -30,6 +32,7 @@ impl<T : super::Base + Clone> Iterator for Node<T> {
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}
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impl<T : super::Base> Node<T> {
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/// return reference to embedded object (or last if many are present)
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pub fn get(&self) -> Option<&T> {
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match self {
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Node::Empty | Node::Link(_) => None,
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@ -38,6 +41,7 @@ impl<T : super::Base> Node<T> {
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}
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}
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/// consume node and extract embedded object (or last if many are present)
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pub fn extract(self) -> Option<T> {
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match self {
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Node::Empty | Node::Link(_) => None,
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@ -46,22 +50,27 @@ impl<T : super::Base> Node<T> {
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}
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}
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/// true only if Node is empty
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pub fn is_empty(&self) -> bool {
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matches!(self, Node::Empty)
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}
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/// true only if Node is link
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pub fn is_link(&self) -> bool {
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matches!(self, Node::Link(_))
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}
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/// true only if Node contains one embedded object
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pub fn is_object(&self) -> bool {
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matches!(self, Node::Object(_))
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}
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/// true only if Node contains many embedded objects
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pub fn is_array(&self) -> bool {
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matches!(self, Node::Array(_))
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}
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/// returns number of contained items (links count as items for len)
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pub fn len(&self) -> usize {
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match self {
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Node::Empty => 0,
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}
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}
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/// returns id of object: url for link, id for object, None if empty or array
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pub fn id(&self) -> Option<String> {
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match self {
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Node::Empty | Node::Array(_) => None,
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