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use log::{error, info};
use std::convert::Infallible;
pub use types::Haystack;
use types::*;
use warp::{
body::{content_length_limit, json},
get,
hyper::{header, StatusCode},
path, post,
reply::{self, with},
Filter, Rejection, Reply,
};
mod types;
/// Returns a warp filter to handle HTTP POSTs for searching the haystack.
pub fn search_filter(
haystack: Haystack,
) -> impl Filter<Extract = impl Reply, Error = Rejection> + Clone {
path("search")
.and(post())
.and(content_length_limit(1024 * 16))
.and(json())
.and_then(move |needles: Needles| search(haystack.to_owned(), needles))
.with(with::header(header::PRAGMA, "no-cache"))
.with(with::header(header::CACHE_CONTROL, "no-store, max-age=0"))
.with(with::header(header::X_FRAME_OPTIONS, "DENY"))
}
/// Returns a warp filter to handle HTTP GETs for refreshing the haystack.
pub fn refresh_filter(
haystack: Haystack,
) -> impl Filter<Extract = impl Reply, Error = Rejection> + Clone {
path!("search" / "refresh")
.and(get())
.and_then(move || refresh(haystack.to_owned()))
}
/// Runs the search request to find all needles in the haystack and converts the
/// results into a reply.
async fn search(haystack: Haystack, needles: Needles) -> Result<impl Reply, Infallible> {
match haystack.search(needles) {
Ok(matches) => Ok(reply::with_status(reply::json(&matches), StatusCode::OK)),
Err(e) => Ok(reply::with_status(
reply::json(&e.to_string()),
StatusCode::INTERNAL_SERVER_ERROR,
)),
}
}
/// Immediately returns. Spawns an asynchronous task to complete the haystack
/// refresh in the background.
async fn refresh(haystack: Haystack) -> Result<impl Reply, Infallible> {
// Run refresh as a background task and immediately return.
tokio::spawn(async move {
if let Err(e) = haystack.refresh() {
error!("{}", e.to_string());
} else {
info!("Search haystack refreshed.");
}
});
Ok("Refresh scheduled")
}
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