feat(healthz): add version

Signed-off-by: Frank Yang <yangpoan@gmail.com>

Author: FrankYang0529

Cargo.toml

@@ -27,7 +27,7 @@ maintenance = { status = "actively-developed" }
 
 [features]
 default = ["server", "client", "caching", "test-tools", "native-tls"]
-server = ["warp", "openid", "hyper", "mime", "either", "_common"]
+server = ["clap", "warp", "openid", "hyper", "mime", "either", "_common"]
 client = ["mime_guess", "dirs", "time", "async-compression", "tokio-tar", "_common"]
 # Internal use only feature that groups all of the optional deps we need for both server and client
 _common = ["providers", "tokio/full", "tokio-util", "oauth2", "reqwest"]

src/server/routes.rs

@@ -1,9 +1,16 @@
 use std::sync::Arc;
 
+use serde::{Deserialize, Serialize};
 use warp::Filter;
 
 use crate::{server::filters, signature::KeyRing};
 
+#[derive(Deserialize, Serialize)]
+pub struct HealthStatus {
+    status: String,
+    version: String,
+}
+
 /// A helper function that aggregates all routes into a complete API filter. If you only wish to
 /// serve specific endpoints or versions, you can assemble them with the individual submodules
 pub fn api<P, I, Authn, Authz, S>(
@@ -22,7 +29,12 @@ where
     Authn: crate::authn::Authenticator + Clone + Send + Sync + 'static,
     Authz: crate::authz::Authorizer + Clone + Send + Sync + 'static,
 {
-    let health = warp::path("healthz").map(|| "OK");
+    let health = warp::path("healthz").map(|| {
+        warp::reply::json(&HealthStatus {
+            status: "Ok".to_string(),
+            version: clap::crate_version!().to_string(),
+        })
+    });
 
     // Use an Arc to avoid a possibly expensive clone of the keyring on every API call
     let wrapped_keyring = Arc::new(keyring);