Add Remote Address Strategy

lib/unleash/strategies.ex

@@ -1,10 +1,11 @@
 defmodule Unleash.Strategies do
-  alias Unleash.Strategy.{ActiveForUsersWithId, GradualRolloutRandom}
+  alias Unleash.Strategy.{ActiveForUsersWithId, GradualRolloutRandom, RemoteAddress}
 
   def strategies do
     [
       {"ActiveForUsersWithId", ActiveForUsersWithId},
       {"GradualRolloutRandom", GradualRolloutRandom},
+      {"RemoteAddress", RemoteAddress}
     ]
   end
 end

lib/unleash/strategy/remote_address.ex

@@ -0,0 +1,15 @@
+defmodule Unleash.Strategy.RemoteAddress do
+  use Unleash.Strategy, name: "RemoteAddress"
+
+  @impl Strategy
+  def enabled?(%{ips: list}, %{remote_address: address})
+      when is_binary(list) and is_binary(address) do
+    result =
+      list
+      |> String.split(",")
+      |> Stream.map(&String.trim/1)
+      |> Enum.member?(address)
+
+    {result, %{ips: list, remote_address: address}}
+  end
+end