Moved episode indexing into a transaction.

hammond-data/src/feed.rs

@@ -1,4 +1,6 @@
 use rayon::prelude::*;
+use diesel::prelude::*;
+
 use diesel::Identifiable;
 use rss;
 
@@ -46,6 +48,7 @@ impl Feed {
         let db = connection();
         let con = db.get().unwrap();
 
+        let _ = con.transaction::<(), Error, _>(|| {
             episodes.into_iter().for_each(|x| {
                 let e = x.index(&con);
                 if let Err(err) = e {
@@ -54,6 +57,8 @@ impl Feed {
                 };
             });
             Ok(())
+        });
+        Ok(())
     }
 
     fn parse_channel(&self) -> NewPodcast {