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Add HEAD routes to avoid spurious error messages

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Rocket automatically implements a HEAD route when there's a matching GET
route, but relying on this behavior also means a spurious error gets
logged due to <https://github.com/SergioBenitez/Rocket/issues/1098>.

Add explicit HEAD routes for `/` and `/alive` to prevent uptime monitoring
services from generating error messages like `No matching routes for HEAD /`.
With these new routes, `HEAD /` only checks that the server can respond over
the network, while `HEAD /alive` also checks that the database connection is
alive, similar to `GET /alive`.
This commit is contained in:
Jeremy Lin 2023-03-04 19:19:09 -08:00
parent 337cbfaf22
commit d3626eba2a
1 changed files with 21 additions and 3 deletions
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24
src/api/web.rs
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@ -4,7 +4,7 @@ use rocket::{fs::NamedFile, http::ContentType, response::content::RawHtml as Htm
use serde_json::Value;
use crate::{
api::{core::now, ApiResult},
api::{core::now, ApiResult, EmptyResult},
error::Error,
util::{Cached, SafeString},
CONFIG,
@ -14,9 +14,9 @@ pub fn routes() -> Vec<Route> {
// If addding more routes here, consider also adding them to
// crate::utils::LOGGED_ROUTES to make sure they appear in the log
if CONFIG.web_vault_enabled() {
routes![web_index, app_id, web_files, attachments, alive, static_files]
routes![web_index, web_index_head, app_id, web_files, attachments, alive, alive_head, static_files]
} else {
routes![attachments, alive, static_files]
routes![attachments, alive, alive_head, static_files]
}
}
@ -43,6 +43,17 @@ async fn web_index() -> Cached<Option<NamedFile>> {
Cached::short(NamedFile::open(Path::new(&CONFIG.web_vault_folder()).join("index.html")).await.ok(), false)
}
#[head("/")]
fn web_index_head() -> EmptyResult {
// Add an explicit HEAD route to prevent uptime monitoring services from
// generating "No matching routes for HEAD /" error messages.
//
// Rocket automatically implements a HEAD route when there's a matching GET
// route, but relying on this behavior also means a spurious error gets
// logged due to <https://github.com/SergioBenitez/Rocket/issues/1098>.
Ok(())
}
#[get("/app-id.json")]
fn app_id() -> Cached<(ContentType, Json<Value>)> {
let content_type = ContentType::new("application", "fido.trusted-apps+json");
@ -92,6 +103,13 @@ fn alive(_conn: DbConn) -> Json<String> {
now()
}
#[head("/alive")]
fn alive_head(_conn: DbConn) -> EmptyResult {
// Avoid logging spurious "No matching routes for HEAD /alive" errors
// due to <https://github.com/SergioBenitez/Rocket/issues/1098>.
Ok(())
}
#[get("/vw_static/<filename>")]
pub fn static_files(filename: String) -> Result<(ContentType, &'static [u8]), Error> {
match filename.as_ref() {