refactor: extract `fiber_id` function to the lua path

src/init.lua

+local cartridge = require('cartridge')
+
+_G.fiber_id = function ()
+  local fiber = require('fiber')
+  return fiber.id()
+end
+
+_G.get_jaeger_agent_host = function()
+    local cfg = cartridge.config_get_readonly()
+
+    if cfg["jaeger_agent_host"] == nil then
+        return "localhost"
+    end
+
+    return cfg["jaeger_agent_host"]
+end
+
+_G.get_jaeger_agent_port = function()
+    local cfg = cartridge.config_get_readonly()
+
+    if cfg["jaeger_agent_port"] == nil then
+        return 6831
+    end
+
+    return cfg["jaeger_agent_port"]
+end

src/otm/fiber.rs

 #[cfg(not(feature = "mock"))]
 pub(super) fn fiber_id() -> u64 {
-    static mut FIBER_FUNC_DEFINED: bool = false;
-    let lua = global_lua();
+    let lua = tarantool::lua_state();
 
-    if !unsafe { FIBER_FUNC_DEFINED } {
-        #[rustfmt::skip]
-        lua.exec(
-            r#"
-                function fiber_id()
-                    local fiber = require('fiber')
-                    return fiber.id()
-                end
-            "#,
-        ).unwrap();
-
-        unsafe {
-            FIBER_FUNC_DEFINED = true;
-        }
-    }
     lua.get::<tarantool::tlua::LuaFunction<_>, _>("fiber_id")
         .unwrap()
         .into_call()
         .unwrap()
 }
-
-#[cfg(not(feature = "mock"))]
-fn global_lua() -> tarantool::tlua::StaticLua {
-    use tarantool::tlua::Lua;
-
-    unsafe { Lua::from_static(tarantool::ffi::tarantool::luaT_state()) }
-}

src/router.lua

 require('strict').on()
+require('sbroad')
 
 local vshard = require('vshard')
 local cartridge = require('cartridge')
@@ -8,26 +9,6 @@ _G.get_schema = function()
     return cartridge.get_schema()
 end
 
-_G.get_jaeger_agent_host = function()
-    local cfg = cartridge.config_get_readonly()
-
-    if cfg["jaeger_agent_host"] == nil then
-        return "localhost"
-    end
-
-    return cfg["jaeger_agent_host"]
-end
-
-_G.get_jaeger_agent_port = function()
-    local cfg = cartridge.config_get_readonly()
-
-    if cfg["jaeger_agent_port"] == nil then
-        return 6831
-    end
-
-    return cfg["jaeger_agent_port"]
-end
-
 _G.get_waiting_timeout = function()
     local cfg = cartridge.config_get_readonly()
 

src/storage.lua

 require('strict').on()
+require('sbroad')
+
 local cartridge = require('cartridge')
 
 _G.get_storage_cache_capacity = function()
@@ -22,26 +24,6 @@ _G.get_storage_cache_size_bytes = function()
     return cfg["storage_cache_size_bytes"]
 end
 
-_G.get_jaeger_agent_host = function()
-    local cfg = cartridge.config_get_readonly()
-
-    if cfg["jaeger_agent_host"] == nil then
-        return "localhost"
-    end
-
-    return cfg["jaeger_agent_host"]
-end
-
-_G.get_jaeger_agent_port = function()
-    local cfg = cartridge.config_get_readonly()
-
-    if cfg["jaeger_agent_port"] == nil then
-        return 6831
-    end
-
-    return cfg["jaeger_agent_port"]
-end
-
 _G.prepare = function(pattern)
     local prep, err = box.prepare(pattern)
     if err ~= nil then