lib: refactor to blocking request that fetches certs on lazy during r…

…untime

Cargo.toml

@@ -1,8 +1,7 @@
 [package]
 name = "oauth-certs"
-version = "0.1.0"
+version = "0.2.0"
 edition = "2021"
-build = "build.rs"
 description = """
 The project fetches oauth certificates from providers during build time and stores them as lazy structures for retrieval.
 """
@@ -18,16 +17,7 @@ jsonwebtoken = { version = "8", default-features = false }
 serde_json = "1"
 once_cell = "1"
 
-[build-dependencies]
-serde_json = "1"
-jsonwebtoken = { version = "8", default-features = false }
-
-[build-dependencies.tokio]
-version = "1"
-default-features = false
-features = ["rt-multi-thread", "macros"]
-
-[build-dependencies.reqwest]
-version = "0.11.18"
+[dependencies.reqwest]
+version = "0.11"
 default-features = false
-features = ["rustls-tls", "gzip", "json"]
+features = ["rustls-tls", "gzip", "json", "blocking"]

src/lib.rs

@@ -43,7 +43,16 @@ pub mod google {
     use jsonwebtoken::jwk::JwkSet;
     use once_cell::sync::Lazy;
 
-    include!(concat!(env!("OUT_DIR"), "/google-certs.rs"));
+    fn retrieve() -> Result<JwkSet, reqwest::Error> {
+        reqwest::blocking::Client::new()
+            .get("https://www.googleapis.com/oauth2/v3/certs")
+            .send()?
+            .json()
+    }
+
+    /// Google oauth certificates"
+    pub static OAUTH_CERTS: Lazy<JwkSet> =
+        Lazy::new(|| retrieve().expect("Failed to retrieve Google OAuth certificates"));
 }
 
 #[cfg(test)]
@@ -52,8 +61,6 @@ mod tests {
 
     #[test]
     fn test_google_oauth_certs() {
-        assert!(google::OAUTH_CERTS
-            .find("911e39e27928ae9f1e9d1e21646de92d19351b44")
-            .is_some());
+        assert!(!google::OAUTH_CERTS.keys.is_empty());
     }
 }