From 566d6ccee21fc52943cf1862222f2e9a8927403c Mon Sep 17 00:00:00 2001
From: pennae <github@quasiparticle.net>
Date: Thu, 14 Jul 2022 07:15:54 +0200
Subject: simplify spawn_logged

---
 src/utils.rs | 30 +++++++-----------------------
 1 file changed, 7 insertions(+), 23 deletions(-)

diff --git a/src/utils.rs b/src/utils.rs
index 5a2407a..70c8c11 100644
--- a/src/utils.rs
+++ b/src/utils.rs
@@ -29,28 +29,13 @@ macro_rules! try_outcome_data {
     };
 }
 
-pub trait CanBeLogged: Send + 'static {
-    fn into_message(self) -> Option<String>;
-    fn not_run() -> Self;
-}
-
-impl CanBeLogged for Result<(), anyhow::Error> {
-    fn into_message(self) -> Option<String> {
-        self.err().map(|e| e.to_string())
-    }
-    fn not_run() -> Self {
-        Ok(())
-    }
-}
-
-pub fn spawn_logged<T>(context: &'static str, future: T) -> JoinHandle<()>
+pub fn spawn_logged<F>(context: &'static str, future: F) -> JoinHandle<()>
 where
-    T: Future + Send + 'static,
-    T::Output: CanBeLogged + Send + 'static,
+    F: Future<Output = anyhow::Result<()>> + Send + 'static,
 {
     tokio::spawn(async move {
-        if let Some(msg) = future.await.into_message() {
-            warn!("{context}: {msg}");
+        if let Err(e) = future.await {
+            warn!("{context}: {e:?}");
         }
     })
 }
@@ -103,10 +88,9 @@ impl<'r> FromRequest<'r> for &'r DeferAction {
 }
 
 impl DeferAction {
-    pub fn spawn_after_success<T>(&self, context: &'static str, future: T)
+    pub fn spawn_after_success<F>(&self, context: &'static str, future: F)
     where
-        T: Future + Send + 'static,
-        T::Output: CanBeLogged + Send + 'static,
+        F: Future<Output = anyhow::Result<()>> + Send + 'static,
     {
         let mut r = self.0.subscribe();
         spawn_logged(context, async move {
@@ -117,7 +101,7 @@ impl DeferAction {
                     r.recv().await.ok();
                     future.await
                 },
-                Err(_) => CanBeLogged::not_run(),
+                Err(_) => Ok(()),
             }
         });
     }
-- 
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