lemmy/crates/apub/src/protocol/mod.rs
Nutomic a2a594b763
Extract Activitypub logic into separate library (#2288)
* Create example for apub lib

* some rewriting of apub lib

* Add LocalInstance struct for apub lib to avoid using Lemmy Settings

* Move ActorType trait to lemmy_apub, because its not needed in library

* Use reqwest_retry instead of custom impl, dont specify timeout on every send()

* Some improvements to example

* Moved inbox handling to library

* bug fixes

* Move context and serde helpers into library

* wip: example changes

* Add lemmy_utils feature to build only LemmyError

* Rename to activitypub_federation

* Remove lemmy_utils dep from activitypub_federation using generic error type

* Finish activitypub example

* Cleanup and fix tests

* Reorganize library files

* Remove ApubObject.to_tombstone()

* Extract activitypub library into separate git repository
2022-06-02 16:33:41 +02:00

116 lines
3.3 KiB
Rust

use crate::local_instance;
use activitypub_federation::{deser::values::MediaTypeMarkdown, utils::fetch_object_http};
use activitystreams_kinds::object::ImageType;
use lemmy_db_schema::newtypes::DbUrl;
use lemmy_utils::error::LemmyError;
use lemmy_websocket::LemmyContext;
use serde::{de::DeserializeOwned, Deserialize, Serialize};
use std::collections::HashMap;
use url::Url;
pub mod activities;
pub(crate) mod collections;
pub(crate) mod objects;
#[derive(Clone, Debug, Deserialize, Serialize)]
#[serde(rename_all = "camelCase")]
pub struct Source {
pub(crate) content: String,
pub(crate) media_type: MediaTypeMarkdown,
}
impl Source {
pub(crate) fn new(content: String) -> Self {
Source {
content,
media_type: MediaTypeMarkdown::Markdown,
}
}
}
#[derive(Clone, Debug, Deserialize, Serialize)]
#[serde(rename_all = "camelCase")]
pub struct ImageObject {
#[serde(rename = "type")]
kind: ImageType,
pub(crate) url: Url,
}
impl ImageObject {
pub(crate) fn new(url: DbUrl) -> Self {
ImageObject {
kind: ImageType::Image,
url: url.into(),
}
}
}
#[derive(Clone, Debug, Default, Deserialize, Serialize)]
#[serde(transparent)]
pub struct Unparsed(HashMap<String, serde_json::Value>);
pub(crate) trait Id {
fn object_id(&self) -> &Url;
}
#[derive(Clone, Debug, Deserialize, Serialize)]
#[serde(untagged)]
pub(crate) enum IdOrNestedObject<Kind: Id> {
Id(Url),
NestedObject(Kind),
}
impl<Kind: Id + DeserializeOwned> IdOrNestedObject<Kind> {
pub(crate) fn id(&self) -> &Url {
match self {
IdOrNestedObject::Id(i) => i,
IdOrNestedObject::NestedObject(n) => n.object_id(),
}
}
pub(crate) async fn object(
self,
context: &LemmyContext,
request_counter: &mut i32,
) -> Result<Kind, LemmyError> {
match self {
IdOrNestedObject::Id(i) => {
Ok(fetch_object_http(&i, local_instance(context), request_counter).await?)
}
IdOrNestedObject::NestedObject(o) => Ok(o),
}
}
}
#[cfg(test)]
pub(crate) mod tests {
use activitypub_federation::deser::context::WithContext;
use assert_json_diff::assert_json_include;
use lemmy_utils::error::LemmyError;
use serde::{de::DeserializeOwned, Serialize};
use std::{collections::HashMap, fs::File, io::BufReader};
pub(crate) fn file_to_json_object<T: DeserializeOwned>(path: &str) -> Result<T, LemmyError> {
let file = File::open(path)?;
let reader = BufReader::new(file);
Ok(serde_json::from_reader(reader)?)
}
pub(crate) fn test_json<T: DeserializeOwned>(path: &str) -> Result<WithContext<T>, LemmyError> {
file_to_json_object::<WithContext<T>>(path)
}
/// Check that json deserialize -> serialize -> deserialize gives identical file as initial one.
/// Ensures that there are no breaking changes in sent data.
pub(crate) fn test_parse_lemmy_item<T: Serialize + DeserializeOwned + std::fmt::Debug>(
path: &str,
) -> Result<T, LemmyError> {
// parse file as T
let parsed = file_to_json_object::<T>(path)?;
// parse file into hashmap, which ensures that every field is included
let raw = file_to_json_object::<HashMap<String, serde_json::Value>>(path)?;
// assert that all fields are identical, otherwise print diff
assert_json_include!(actual: &parsed, expected: raw);
Ok(parsed)
}
}