feat(proxy): record tunnel stability metrics

crates/aether-data/src/driver/sqlite/mod.rs

@@ -1,3 +1,29 @@
 mod pool;
 
 pub use pool::{SqlitePool, SqlitePoolConfig, SqlitePoolFactory};
+
+use crate::DataLayerError;
+use sqlx::{sqlite::SqliteRow, Row};
+
+pub(crate) fn sqlite_real(row: &SqliteRow, field: &str) -> Result<f64, DataLayerError> {
+    match row.try_get::<f64, _>(field) {
+        Ok(value) => Ok(value),
+        Err(real_err) => match row.try_get::<i64, _>(field) {
+            Ok(value) => Ok(value as f64),
+            Err(_) => Err(DataLayerError::sql(real_err)),
+        },
+    }
+}
+
+pub(crate) fn sqlite_optional_real(
+    row: &SqliteRow,
+    field: &str,
+) -> Result<Option<f64>, DataLayerError> {
+    match row.try_get::<Option<f64>, _>(field) {
+        Ok(value) => Ok(value),
+        Err(real_err) => match row.try_get::<Option<i64>, _>(field) {
+            Ok(value) => Ok(value.map(|value| value as f64)),
+            Err(_) => Err(DataLayerError::sql(real_err)),
+        },
+    }
+}