Update loadtests code (#861)

* Update README file

* Add valtimer and kenzu in loadtests

* Fix override JWT if statement

* Add bushes to new_game function

* Add override_jwt explanation to readme file

apps/arena/lib/arena/game_socket_handler.ex

@@ -28,6 +28,7 @@ defmodule Arena.GameSocketHandler do
         _ ->
           :cowboy_req.binding(:client_id, req)
       end
+      |> maybe_override_jwt(System.get_env("OVERRIDE_JWT"), req)
 
     game_id = :cowboy_req.binding(:game_id, req)
     game_pid = game_id |> Base58.decode() |> :erlang.binary_to_term([:safe])
@@ -269,4 +270,8 @@ defmodule Arena.GameSocketHandler do
   defp handle_decoded_message(message, _) do
     Logger.info("Unexpected message: #{inspect(message)}")
   end
+
+  # This is to override jwt validation for human clients in loadtests.
+  defp maybe_override_jwt(_client_id, "true", req), do: :cowboy_req.binding(:client_id, req)
+  defp maybe_override_jwt(client_id, _override_jwt?, _req), do: client_id
 end

apps/arena/lib/arena/game_updater.ex

@@ -770,6 +770,7 @@ defmodule Arena.GameUpdater do
       |> Map.put(:items, %{})
       |> Map.put(:player_timestamps, %{})
       |> Map.put(:obstacles, %{})
+      |> Map.put(:bushes, %{})
       |> Map.put(:server_timestamp, 0)
       |> Map.put(:client_to_player_map, %{})
       |> Map.put(:pools, %{})

apps/arena_load_test/README.md

@@ -5,15 +5,19 @@ Application to load test the Arena backend implementation. It simulates *N* clie
 ## How to do run our load tests?
 
 ```bash
-# arena_server_ip is the IP of the server that's running the Arena application
-# SERVER_HOST is localhost:4000 if not explicited
-export SERVER_HOST=${arena_server_ip}:4000
+# We will disable user auth until we find a proper fix for it.
+export OVERRIDE_JWT=true
+# arena_target_host is the region of the server that's running the Arena application.
+# Brazil for example.
+# TARGET_SERVER is localhost:4000 if not explicited
+export TARGET_SERVER=${arena_target_host}
 make run
 ```
 
 Inside the Elixir shell:
 ```elixir
 # number_of_simulated_players must be a positive integer
+number_of_simulated_players = 5000
 ArenaLoadTest.SocketSupervisor.spawn_players(number_of_simulated_players)
 ```
 

apps/arena_load_test/lib/arena_load_test/socket_handler.ex

@@ -71,7 +71,7 @@ defmodule ArenaLoadTest.SocketHandler do
   # This is enough for now. Will request bots from the bots app in future iterations.
   # https://github.com/lambdaclass/mirra_backend/issues/410
   defp get_random_active_character() do
-    ["muflus", "h4ck", "uma"]
+    ["muflus", "h4ck", "uma", "valtimer", "kenzu"]
     |> Enum.random()
   end