plug.ex

defmodule TrangellUsersService.Login.Plugs.BanIpChecker do
	import Plug.Conn
	import Phoenix.Controller
	alias TrangellUsersService.Login.Security.Security

	def init(_params) do

	end

	def call(conn, params) do
		# IO.inspect conn.params["last_ip"]
		# ip = to_string(:inet_parse.ntoa(conn.remote_ip))
		user_banned_ip = case Security.convert_redis_number(conn.params["last_ip"]) do
			[nil] ->
		    assign(conn, :user_ip_checked, params)
		    n when n >= 4 ->
		    	conn
		        |> put_status(403)
		        |> json(%{error_code: "403", error_msg: "your IP is banned, Please try again later."})
		        |> halt()
		    _ ->
		    assign(conn, :user_ip_checked, params)
		end
		user_banned_ip
	end
end

plug1.ex

defmodule TrangellUsersService.Login.Plugs.BanIpChecker do
	import Plug.Conn
	import Phoenix.Controller
	alias TrangellUsersService.Login.Security.Security

	def init(_params) do

	end

	def call(%Plug.Conn{params: %{"last_ip" => last_ip}} = conn, params) do
		# IO.inspect conn.params["last_ip"]
		# ip = to_string(:inet_parse.ntoa(conn.remote_ip))
		# user_banned_ip = case Security.convert_redis_number(conn.params["last_ip"]) do
		user_banned_ip = case Security.convert_redis_number(last_ip) do
			[nil] ->
		    assign(conn, :user_ip_checked, params)
		    n when n >= 4 ->
		    	conn
		        |> put_status(403)
		        |> json(%{error_code: "403", error_msg: "your IP is banned, Please try again later."})
		        |> halt()
		    _ ->
		    assign(conn, :user_ip_checked, params)
		end
		user_banned_ip
	end

	def call(conn, _params) do
	  conn
	  |> put_status(403)
		|> json(%{error_code: "403", error_msg: "You don't have an access."})
	  |> halt()
	end

end