feat(web/atward): Wire up query resolution to a web server r/2560

Adds a simple web server which logs all incoming requests and either
sends the user to the correct destination, or gives up and displays an
error (in the future there'll be fallback searches so that peopple can
use this as their default search engine easily).

Change-Id: I4f10472dbc74fa9cc71fad0533da38eda2b6077c
Reviewed-on: https://cl.tvl.fyi/c/depot/+/3089
Tested-by: BuildkiteCI
Reviewed-by: isomer <isomer@tvl.fyi>

1 files changed, 17 insertions, 1 deletions

diff --git a/web/atward/src/main.rs b/web/atward/src/main.rs
index 01e0ac046482..5fe5b735ba47 100644
--- a/web/atward/src/main.rs
+++ b/web/atward/src/main.rs
@@ -5,6 +5,7 @@
 //! browsers and attempts to send users to useful locations based on
 //! their search query (falling back to another search engine).
 use regex::Regex;
+use rouille::Response;
 
 /// A query type supported by atward. It consists of a pattern on
 /// which to match and trigger the query, and a function to execute
@@ -46,8 +47,23 @@ fn dispatch(queries: &[Query], uri: &str) -> Option<String> {
     None
 }
 
+fn fallback() -> Response {
+    Response::text("no match for atward whimchst query").with_status_code(404)
+}
+
 fn main() {
-    println!("Hello, world!");
+    let queries = queries();
+    let port = std::env::var("ATWARD_PORT").unwrap_or("28973".to_string());
+    let address = format!("0.0.0.0:{}", port);
+
+    rouille::start_server(&address, move |request| {
+        rouille::log(&request, std::io::stderr(), || {
+            match dispatch(&queries, &request.url()) {
+                None => fallback(),
+                Some(destination) => Response::redirect_303(destination),
+            }
+        })
+    });
 }
 
 #[cfg(test)]