change to f64

src/database.rs

@@ -54,7 +54,7 @@ pub struct Config {
     #[serde(default = "default_sqlite_wal_clean_second_timeout")]
     sqlite_wal_clean_second_timeout: u32,
     #[serde(default = "default_sqlite_spillover_reap_fraction")]
-    sqlite_spillover_reap_fraction: u32,
+    sqlite_spillover_reap_fraction: f64,
     #[serde(default = "default_sqlite_spillover_reap_interval_secs")]
     sqlite_spillover_reap_interval_secs: u32,
     #[serde(default = "default_max_request_size")]
@@ -125,8 +125,8 @@ fn default_sqlite_wal_clean_second_timeout() -> u32 {
     2
 }
 
-fn default_sqlite_spillover_reap_fraction() -> u32 {
-    2
+fn default_sqlite_spillover_reap_fraction() -> f64 {
+    2.0
 }
 
 fn default_sqlite_spillover_reap_interval_secs() -> u32 {
@@ -558,9 +558,7 @@ impl Database {
 
     #[cfg(feature = "sqlite")]
     pub async fn start_spillover_reap_task(engine: Arc<Engine>, config: &Config) {
-        use std::convert::TryInto;
-
-        let fraction_factor = config.sqlite_spillover_reap_fraction.max(1).try_into().unwrap(/* We just converted it to be at least 1 */);
+        let fraction_factor = config.sqlite_spillover_reap_fraction.max(1.0);
         let interval_secs = config.sqlite_spillover_reap_interval_secs as u64;
 
         let weak = Arc::downgrade(&engine);

src/database/abstraction/sqlite.rs

@@ -9,7 +9,6 @@ use rusqlite::{params, Connection, DatabaseName::Main, OptionalExtension};
 use std::{
     collections::BTreeMap,
     future::Future,
-    num::NonZeroU32,
     ops::Deref,
     path::{Path, PathBuf},
     pin::Pin,
@@ -246,10 +245,13 @@ impl Engine {
     }
 
     // Reaps (at most) (.len() / `fraction`) (rounded down, min 1) connections.
-    pub fn reap_spillover_by_fraction(&self, fraction: NonZeroU32) {
+    pub fn reap_spillover_by_fraction(&self, fraction: f64) {
         let mut reaped = 0;
 
-        let amount = ((self.pool.spills.1.len() as u32) / fraction).max(1);
+        let spill_amount = self.pool.spills.1.len() as f64;
+        let fraction = fraction.max(1.0 /* Can never be too sure */);
+
+        let amount = (spill_amount / fraction).max(1.0) as u32;
 
         for _ in 0..amount {
             if self.pool.spills.try_take().is_some() {