Add update lock

src/main.rs

@@ -27,7 +27,7 @@ async fn update(headers: HeaderMap) -> &'static str {
         match updater::update().await {
             Ok(_) => log::info!("Updated!"),
             Err(err) => log::info!("Updater err: {:?}", err),
-        }
+        };
     });
 
     "Update started"

src/updater.rs

@@ -259,7 +259,16 @@ async fn send_webhooks() -> Result<(), Box<reqwest::Error>> {
     Ok(())
 }
 
+lazy_static! {
+    pub static ref UPDATE_LOCK: tokio::sync::Mutex<()> = tokio::sync::Mutex::new(());
+}
+
 pub async fn update() -> Result<(), Box<dyn std::error::Error>> {
+    let _lock = match UPDATE_LOCK.try_lock() {
+        Ok(v) => v,
+        Err(err) => return Err(Box::new(err)),
+    };
+
     log::info!("Start update...");
 
     let pool = match get_postgres_pool().await {