Merge #3334

3334: Add specific error codes `immutable_...` r=irevoire a=loiclec

Add the following error codes:

When an immutable field of API key is sent to the `PATCH /keys` route: 
- `ImmutableApiKeyUid` 
- `ImmutableApiKeyKey`
- `ImmutableApiKeyActions`
- `ImmutableApiKeyIndexes`
- `ImmutableApiKeyExpiresAt`
- `ImmutableApiKeyCreatedAt`
- `ImmutableApiKeyUpdatedAt`

When an immutable field of Index is sent to the `PATCH /indexes/{uid}` route:
- `ImmutableIndexUid`
- `ImmutableIndexCreatedAt`
- `ImmutableIndexUpdatedAt`

Co-authored-by: Loïc Lecrenier <loic.lecrenier@me.com>
Co-authored-by: Tamo <tamo@meilisearch.com>

meilisearch/src/routes/indexes/mod.rs

@@ -1,10 +1,12 @@
+use std::convert::Infallible;
+
 use actix_web::web::Data;
 use actix_web::{web, HttpRequest, HttpResponse};
-use deserr::DeserializeFromValue;
+use deserr::{DeserializeError, DeserializeFromValue, ValuePointerRef};
 use index_scheduler::IndexScheduler;
 use log::debug;
 use meilisearch_types::error::deserr_codes::*;
-use meilisearch_types::error::{DeserrError, ResponseError, TakeErrorMessage};
+use meilisearch_types::error::{unwrap_any, Code, DeserrError, ResponseError, TakeErrorMessage};
 use meilisearch_types::index_uid::IndexUid;
 use meilisearch_types::milli::{self, FieldDistribution, Index};
 use meilisearch_types::tasks::KindWithContent;
@@ -140,8 +142,27 @@ pub async fn create_index(
     }
 }
 
+fn deny_immutable_fields_index(
+    field: &str,
+    accepted: &[&str],
+    location: ValuePointerRef,
+) -> DeserrError {
+    let mut error = unwrap_any(DeserrError::<BadRequest>::error::<Infallible>(
+        None,
+        deserr::ErrorKind::UnknownKey { key: field, accepted },
+        location,
+    ));
+
+    error.code = match field {
+        "uid" => Code::ImmutableIndexUid,
+        "createdAt" => Code::ImmutableIndexCreatedAt,
+        "updatedAt" => Code::ImmutableIndexUpdatedAt,
+        _ => Code::BadRequest,
+    };
+    error
+}
 #[derive(DeserializeFromValue, Debug)]
-#[deserr(error = DeserrError, rename_all = camelCase, deny_unknown_fields)]
+#[deserr(error = DeserrError, rename_all = camelCase, deny_unknown_fields = deny_immutable_fields_index)]
 pub struct UpdateIndexRequest {
     #[deserr(error = DeserrError<InvalidIndexPrimaryKey>)]
     primary_key: Option<String>,