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https://github.com/LemmyNet/lemmy.git
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Some refactoring of puller.rs
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parent
d2bad5f79e
commit
edd0ef5991
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@ -12,6 +12,7 @@ use diesel::result::Error::NotFound;
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use diesel::PgConnection;
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use failure::Error;
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use isahc::prelude::*;
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use log::warn;
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use serde::Deserialize;
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use std::time::Duration;
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@ -26,30 +27,29 @@ fn fetch_node_info(domain: &str) -> Result<NodeInfo, Error> {
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}
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fn fetch_communities_from_instance(
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domain: &str,
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community_list_url: &str,
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conn: &PgConnection,
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) -> Result<Vec<CommunityForm>, Error> {
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let node_info = fetch_node_info(domain)?;
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if let Some(community_list_url) = node_info.metadata.community_list_url {
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let collection = fetch_remote_object::<UnorderedCollection>(&community_list_url)?;
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let object_boxes = collection
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.collection_props
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.get_many_items_base_boxes()
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.unwrap();
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let communities: Result<Vec<CommunityForm>, Error> = object_boxes
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.map(|c| {
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let group = c.to_owned().to_concrete::<GroupExt>()?;
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CommunityForm::from_group(&group, conn)
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})
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.collect();
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Ok(communities?)
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} else {
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Err(format_err!(
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"{} is not a Lemmy instance, federation is not supported",
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domain
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))
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}
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) -> Result<Vec<Community>, Error> {
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fetch_remote_object::<UnorderedCollection>(community_list_url)?
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.collection_props
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.get_many_items_base_boxes()
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.unwrap()
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.map(|b| -> Result<CommunityForm, Error> {
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let group = b.to_owned().to_concrete::<GroupExt>()?;
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Ok(CommunityForm::from_group(&group, conn)?)
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})
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.map(
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|cf: Result<CommunityForm, Error>| -> Result<Community, Error> {
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let cf2 = cf?;
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let existing = Community::read_from_actor_id(conn, &cf2.actor_id);
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match existing {
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Err(NotFound {}) => Ok(Community::create(conn, &cf2)?),
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Ok(c) => Ok(Community::update(conn, c.id, &cf2)?),
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Err(e) => Err(Error::from(e)),
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}
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},
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)
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.collect()
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}
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// TODO: add an optional param last_updated and only fetch if its too old
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@ -60,7 +60,6 @@ where
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if Settings::get().federation.tls_enabled && !uri.starts_with("https://") {
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return Err(format_err!("Activitypub uri is insecure: {}", uri));
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}
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// TODO: should cache responses here when we are in production
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// TODO: this function should return a future
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let timeout = Duration::from_secs(60);
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let text = Request::get(uri)
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@ -76,23 +75,35 @@ where
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fn fetch_remote_community_posts(
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instance: &str,
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community: &str,
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community: &Community,
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conn: &PgConnection,
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) -> Result<Vec<PostForm>, Error> {
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let endpoint = format!("http://{}/federation/c/{}", instance, community);
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let community = fetch_remote_object::<GroupExt>(&endpoint)?;
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let outbox_uri = &community.extension.get_outbox().to_string();
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) -> Result<Vec<Post>, Error> {
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let endpoint = format!("http://{}/federation/c/{}", instance, community.name);
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let group = fetch_remote_object::<GroupExt>(&endpoint)?;
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let outbox_uri = &group.extension.get_outbox().to_string();
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// TODO: outbox url etc should be stored in local db
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let outbox = fetch_remote_object::<OrderedCollection>(outbox_uri)?;
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let items = outbox.collection_props.get_many_items_base_boxes();
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let posts = items
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.unwrap()
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.map(|obox: &BaseBox| {
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let page = obox.clone().to_concrete::<Page>().unwrap();
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PostForm::from_page(&page, conn)
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})
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.collect::<Result<Vec<PostForm>, Error>>()?;
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Ok(posts)
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Ok(
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items
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.unwrap()
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.map(|obox: &BaseBox| -> Result<PostForm, Error> {
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let page = obox.clone().to_concrete::<Page>()?;
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PostForm::from_page(&page, conn)
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})
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.map(|pf: Result<PostForm, Error>| -> Result<Post, Error> {
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let mut pf2 = pf?;
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pf2.community_id = community.id;
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let existing = Post::read_from_apub_id(conn, &pf2.ap_id);
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match existing {
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Err(NotFound {}) => Ok(Post::create(conn, &pf2)?),
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Ok(p) => Ok(Post::update(conn, p.id, &pf2)?),
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Err(e) => Err(Error::from(e)),
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}
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})
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.collect::<Result<Vec<Post>, Error>>()?,
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)
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}
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pub fn fetch_remote_user(apub_id: &str, conn: &PgConnection) -> Result<User_, Error> {
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@ -110,25 +121,17 @@ pub fn fetch_remote_user(apub_id: &str, conn: &PgConnection) -> Result<User_, Er
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// after that, we should rely in the inbox, and fetch on demand when needed
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pub fn fetch_all(conn: &PgConnection) -> Result<(), Error> {
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for instance in &get_following_instances() {
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let communities = fetch_communities_from_instance(instance, conn)?;
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for community in &communities {
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let existing = Community::read_from_actor_id(conn, &community.actor_id);
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let community_id = match existing {
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Err(NotFound {}) => Community::create(conn, community)?.id,
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Ok(c) => Community::update(conn, c.id, community)?.id,
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Err(e) => return Err(Error::from(e)),
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};
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let mut posts = fetch_remote_community_posts(instance, &community.name, conn)?;
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for post_ in &mut posts {
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post_.community_id = community_id;
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let existing = Post::read_from_apub_id(conn, &post_.ap_id);
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match existing {
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Err(NotFound {}) => Post::create(conn, post_)?,
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Ok(p) => Post::update(conn, p.id, post_)?,
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Err(e) => return Err(Error::from(e)),
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};
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let node_info = fetch_node_info(instance)?;
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if let Some(community_list_url) = node_info.metadata.community_list_url {
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let communities = fetch_communities_from_instance(&community_list_url, conn)?;
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for c in communities {
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fetch_remote_community_posts(instance, &c, conn)?;
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}
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} else {
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warn!(
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"{} is not a Lemmy instance, federation is not supported",
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instance
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);
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}
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}
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Ok(())
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