use bytes for config proto

proto/backend.proto

@@ -63,7 +63,7 @@ message BackendInput {
         int32 get_changed_tags = 51;
         string get_config_json = 52;
         SetConfigJson set_config_json = 53;
-        string set_all_config = 54;
+        bytes set_all_config = 54;
         Empty get_all_config = 55;
     }
 }
@@ -109,10 +109,10 @@ message BackendOutput {
         CanonifyTagsOut canonify_tags = 49;
         AllTagsOut all_tags = 50;
         GetChangedTagsOut get_changed_tags = 51;
-        string get_config_json = 52;
+        bytes get_config_json = 52;
         Empty set_config_json = 53;
         Empty set_all_config = 54;
-        string get_all_config = 55;
+        bytes get_all_config = 55;
 
         BackendError error = 2047;
     }
@@ -466,7 +466,7 @@ message CanonifyTagsOut {
 message SetConfigJson {
     string key = 1;
     oneof op {
-        string val = 2;
+        bytes val = 2;
         Empty remove = 3;
     }
 }

pylib/anki/config.py

@@ -19,7 +19,6 @@ As this is less efficient, please use the col.*_config() API in new code.
 from __future__ import annotations
 
 import copy
-import json
 import weakref
 from typing import Any
 
@@ -31,10 +30,7 @@ class ConfigManager:
         self.col = col.weakref()
 
     def get_immutable(self, key: str) -> Any:
-        s = self.col.backend.get_config_json(key)
-        if not s:
-            raise KeyError
-        return json.loads(s)
+        return self.col.backend.get_config_json(key)
 
     def set(self, key: str, val: Any) -> None:
         self.col.backend.set_config_json(key, val)

pylib/anki/rsbackend.py

@@ -577,13 +577,16 @@ class RustBackend:
             ).get_changed_tags.tags
         )
 
-    def get_config_json(self, key: str) -> str:
-        return self._run_command(pb.BackendInput(get_config_json=key)).get_config_json
+    def get_config_json(self, key: str) -> Any:
+        b = self._run_command(pb.BackendInput(get_config_json=key)).get_config_json
+        if b == b"":
+            raise KeyError
+        return orjson.loads(b)
 
     def set_config_json(self, key: str, val: Any):
         self._run_command(
             pb.BackendInput(
-                set_config_json=pb.SetConfigJson(key=key, val=json.dumps(val))
+                set_config_json=pb.SetConfigJson(key=key, val=orjson.dumps(val))
             )
         )
 
@@ -598,10 +601,10 @@ class RustBackend:
         jstr = self._run_command(
             pb.BackendInput(get_all_config=pb.Empty())
         ).get_all_config
-        return json.loads(jstr)
+        return orjson.loads(jstr)
 
     def set_all_config(self, conf: Dict[str, Any]):
-        self._run_command(pb.BackendInput(set_all_config=json.dumps(conf)))
+        self._run_command(pb.BackendInput(set_all_config=orjson.dumps(conf)))
 
 
 def translate_string_in(

rslib/src/backend/mod.rs

@@ -796,12 +796,12 @@ impl Backend {
         })
     }
 
-    fn get_config_json(&self, key: &str) -> Result<String> {
+    fn get_config_json(&self, key: &str) -> Result<Vec<u8>> {
         self.with_col(|col| {
             let val: Option<JsonValue> = col.get_config_optional(key);
             match val {
-                None => Ok("".to_string()),
-                Some(val) => Ok(serde_json::to_string(&val)?),
+                None => Ok(vec![]),
+                Some(val) => Ok(serde_json::to_vec(&val)?),
             }
         })
     }
@@ -813,7 +813,7 @@ impl Backend {
                     match op {
                         pb::set_config_json::Op::Val(val) => {
                             // ensure it's a well-formed object
-                            let val: JsonValue = serde_json::from_str(&val)?;
+                            let val: JsonValue = serde_json::from_slice(&val)?;
                             col.set_config(&input.key, &val)
                         }
                         pb::set_config_json::Op::Remove(_) => col.remove_config(&input.key),
@@ -825,8 +825,8 @@ impl Backend {
         })
     }
 
-    fn set_all_config(&self, conf: &str) -> Result<()> {
-        let val: HashMap<String, JsonValue> = serde_json::from_str(conf)?;
+    fn set_all_config(&self, conf: &[u8]) -> Result<()> {
+        let val: HashMap<String, JsonValue> = serde_json::from_slice(conf)?;
         self.with_col(|col| {
             col.transact(None, |col| {
                 col.storage
@@ -835,10 +835,10 @@ impl Backend {
         })
     }
 
-    fn get_all_config(&self) -> Result<String> {
+    fn get_all_config(&self) -> Result<Vec<u8>> {
         self.with_col(|col| {
             let conf = col.storage.get_all_config()?;
-            serde_json::to_string(&conf).map_err(Into::into)
+            serde_json::to_vec(&conf).map_err(Into::into)
         })
     }
 }