fix RED-144347, made needed change to properly run on Redis 6. (#403)

* fix RED-144347, made needed change to properly run on Redis 6.

* Upgrade to rust 1.81.0

Author: MeirShpilraien

.github/workflows/ci.yml

@@ -18,7 +18,7 @@ jobs:
           - [7-0, "7.2"]
           - [7-2, "7.2"]
         toolchain:
-          - 1.78.0
+          - 1.81.0
           - stable
 
     steps:

src/context/commands.rs

@@ -504,6 +504,10 @@ pub fn register_commands(ctx: &Context) -> Status {
 pub fn register_commands(ctx: &Context) -> Status {
     register_commands_internal(ctx).map_or_else(
         |e| {
+            /* Make sure new command registration API is not been used. */
+            if COMMANDS_LIST.is_empty() {
+                return Status::Ok;
+            }
             ctx.log_warning(&e.to_string());
             Status::Err
         },

src/macros.rs

@@ -48,18 +48,17 @@ macro_rules! redis_command {
             return $crate::raw::Status::Err as c_int;
         }
 
-        let command =
-            unsafe { $crate::raw::RedisModule_GetCommand.unwrap()($ctx, name.as_ptr()) };
-        if command.is_null() {
-            $crate::raw::redis_log(
-                $ctx,
-                &format!("Error: failed to get command {}", $command_name),
-            );
-            return $crate::raw::Status::Err as c_int;
-        }
-
         let mandatory = AclCategory::from($mandatory_acl_categories);
         if let Some(RM_SetCommandACLCategories) = $crate::raw::RedisModule_SetCommandACLCategories {
+            let command =
+            unsafe { $crate::raw::RedisModule_GetCommand.unwrap()($ctx, name.as_ptr()) };
+            if command.is_null() {
+                $crate::raw::redis_log(
+                    $ctx,
+                    &format!("Error: failed to get command {}", $command_name),
+                );
+                return $crate::raw::Status::Err as c_int;
+            }
             let mut optional_failed = true;
             let mut acl_categories = CString::default();
             $(
@@ -417,7 +416,9 @@ macro_rules! redis_module {
                         register_enum_configuration(&context, $enum_configuration_name, $enum_configuration_val, default, $enum_flags_options, $enum_on_changed);
                     )*
                 )?
-                raw::RedisModule_LoadConfigs.unwrap()(ctx);
+                if let Some(load_config) = raw::RedisModule_LoadConfigs {
+                    load_config(ctx);
+                }
 
                 $(
                     $crate::redis_command!(ctx, $module_config_get_command, |ctx, args: Vec<RedisString>| {