error handling

backend/src/utils/error.rs

@@ -0,0 +1,32 @@
+use diesel::result::Error as DieselError;
+
+use crate::error::{AppError, AppResult};
+
+pub trait DbResultExt<T> {
+    fn db_context(self, context: &'static str) -> AppResult<T>;
+}
+
+impl<T> DbResultExt<T> for Result<T, DieselError> {
+    fn db_context(self, context: &'static str) -> AppResult<T> {
+        self.map_err(|err| match err {
+            DieselError::NotFound => AppError::not_found(),
+            other => {
+                tracing::error!(error = ?other, "{context}");
+                AppError::internal(context)
+            }
+        })
+    }
+}
+
+pub trait StorageResultExt<T> {
+    fn storage_context(self, context: &'static str) -> AppResult<T>;
+}
+
+impl<T> StorageResultExt<T> for Result<T, anyhow::Error> {
+    fn storage_context(self, context: &'static str) -> AppResult<T> {
+        self.map_err(|err| {
+            tracing::error!(error = ?err, "{context}");
+            AppError::internal(context)
+        })
+    }
+}

backend/src/utils/mod.rs

@@ -1,5 +1,6 @@
 pub mod bootstrap;
 pub mod db;
+pub mod error;
 pub mod http;
 pub mod json;
 pub mod storage_paths;