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basic, working rss feeds

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This commit is contained in:
Felix Ableitner 2019-11-19 18:07:10 +01:00
parent 8029981a05
commit 45df3425d1
3 changed files with 62 additions and 39 deletions
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2
docker/dev/Dockerfile vendored
View file

@ -21,7 +21,7 @@ COPY server/Cargo.toml server/Cargo.lock ./
RUN sudo chown -R rust:rust . RUN sudo chown -R rust:rust .
RUN mkdir -p ./src/bin \ RUN mkdir -p ./src/bin \
&& echo 'fn main() { println!("Dummy") }' > ./src/bin/main.rs && echo 'fn main() { println!("Dummy") }' > ./src/bin/main.rs
RUN cargo build --releasecargo RUN cargo build --release
RUN rm -f ./target/x86_64-unknown-linux-musl/release/deps/lemmy_server* RUN rm -f ./target/x86_64-unknown-linux-musl/release/deps/lemmy_server*
COPY server/src ./src/ COPY server/src ./src/
COPY server/migrations ./migrations/ COPY server/migrations ./migrations/

97
server/src/feeds.rs
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@ -1,28 +1,46 @@
extern crate rss; extern crate rss;
extern crate htmlescape; extern crate htmlescape;
use rss::ChannelBuilder; use super::*;
use rss::ItemBuilder;
use actix_web::HttpResponse;
use actix_web::body::Body;
use crate::Settings; use crate::Settings;
use crate::db::{establish_connection, ListingType, SortType}; use crate::db::{establish_connection, ListingType, SortType, Crud};
use crate::db::community_view::SiteView; use crate::db::community_view::SiteView;
use crate::db::post_view::PostView; use crate::db::post_view::PostView;
use self::rss::Item; use crate::db::user::User_;
use crate::db::community::Community;
use actix_web::{HttpResponse, web, Result};
use actix_web::body::Body;
use rss::{ChannelBuilder, Item, ItemBuilder};
use diesel::result::Error;
pub fn get_feed() -> HttpResponse<Body> { pub fn get_feed(info: web::Path<(char, String)>) -> HttpResponse<Body> {
return match get_feed_internal(info) {
Ok(body) => HttpResponse::Ok()
.content_type("application/rss+xml")
.body(body),
// TODO: handle the specific type of error (403, 500, etc)
Err(e) => HttpResponse::InternalServerError().finish(),
}
}
fn get_feed_internal(info: web::Path<(char, String)>) -> Result<String, Error> {
let conn = establish_connection(); let conn = establish_connection();
let site_view = match SiteView::read(&conn) {
Ok(site_view) => site_view,
Err(_e) => return HttpResponse::InternalServerError().finish(),
};
let post = match PostView::list(&conn, let mut community_id: Option<i32> = None;
let mut creator_id: Option<i32> = None;
// TODO: add a feed for /type/all
match info.0 {
'c' => community_id = Some(Community::read_from_name(&conn,info.1.clone())?.id),
'u' => creator_id = Some(User_::find_by_email_or_username(&conn,&info.1)?.id),
_ => return Err(Error::NotFound),
}
let post = PostView::list(&conn,
ListingType::All, ListingType::All,
&SortType::New, &SortType::New,
None, community_id,
None, creator_id,
None, None,
None, None,
None, None,
@ -30,35 +48,40 @@ pub fn get_feed() -> HttpResponse<Body> {
false, false,
false, false,
None, None,
None,) { None,)?;
Ok(post) => post,
Err(_e) => return HttpResponse::InternalServerError().finish(),
};
let mut items: Vec<Item> = Vec::new(); let mut items: Vec<Item> = Vec::new();
for p in post { for p in post {
let i = ItemBuilder::default() // TODO: this may cause a lot of db queries
.title(p.name) let user = User_::read(&conn, p.creator_id)?;
.link(p.url) let dt = DateTime::<Utc>::from_utc(p.published, Utc);
.content(p.body) let mut i = ItemBuilder::default();
.author(p.creator_id) i.title(htmlescape::encode_minimal(&p.name));
.pub_date(p.published) i.author(htmlescape::encode_minimal(&user.name));
.build() i.pub_date(htmlescape::encode_minimal(&dt.to_rfc2822()));
.unwrap(); if p.url.is_some() {
items.append(&i); i.link(p.url.unwrap());
}
if p.body.is_some() {
i.content(p.body.unwrap());
}
// TODO: any other fields?
// https://rust-syndication.github.io/rss/rss/struct.ItemBuilder.html
items.push(i.build().unwrap());
} }
let channel = ChannelBuilder::default() let site_view = SiteView::read(&conn)?;
.title(htmlescape::encode_minimal(&site_view.name)) let mut channel_builder = ChannelBuilder::default();
channel_builder.title(htmlescape::encode_minimal(&site_view.name))
.link(format!("https://{}", Settings::get().hostname)) .link(format!("https://{}", Settings::get().hostname))
.description(htmlescape::encode_minimal(&site_view.description.unwrap())) .items(items);
.pub_date("asd") if site_view.description.is_some() {
.items(items) channel_builder.description(htmlescape::encode_minimal(&site_view.description.unwrap()));
.build() }
.unwrap(); // TODO: any other fields?
// https://rust-syndication.github.io/rss/rss/struct.ChannelBuilder.html
let channel = channel_builder.build().unwrap();
channel.write_to(::std::io::sink()).unwrap(); channel.write_to(::std::io::sink()).unwrap();
return HttpResponse::Ok() return Ok(channel.to_string());
.content_type("application/rss+xml")
.body(channel.to_string());
} }

2
server/src/main.rs
View file

@ -206,7 +206,7 @@ fn main() {
"/.well-known/nodeinfo", "/.well-known/nodeinfo",
web::get().to(nodeinfo::node_info_well_known), web::get().to(nodeinfo::node_info_well_known),
) )
.route("/feed.xml", web::get().to(feeds::get_feed)) .route("/feeds/{type}/{name}.xml", web::get().to(feeds::get_feed))
// static resources // static resources
.service(actix_files::Files::new("/static", front_end_dir())) .service(actix_files::Files::new("/static", front_end_dir()))
}) })