fix: add default region nodes when no direct region mapping (#767)

* fix: add default region nodes when no direct region mapping

* feat: support aws ap-east-1 tenant region mapping

lib/realtime/nodes.ex

@@ -46,6 +46,7 @@ defmodule Realtime.Nodes do
       "ap-northeast-1" -> "ap-southeast-1"
       "ap-northeast-2" -> "ap-southeast-1"
       "ap-southeast-2" -> "ap-southeast-2"
+      "ap-east-1" -> "ap-southeast-1"
       "ap-south-1" -> "ap-southeast-1"
       "eu-west-1" -> "eu-west-2"
       "eu-west-2" -> "eu-west-2"
@@ -65,6 +66,7 @@ defmodule Realtime.Nodes do
       "ap-northeast-1" -> "syd"
       "ap-northeast-2" -> "syd"
       "ap-southeast-2" -> "syd"
+      "ap-east-1" -> "syd"
       "ap-south-1" -> "syd"
       "eu-west-1" -> "lhr"
       "eu-west-2" -> "lhr"
@@ -81,20 +83,22 @@ defmodule Realtime.Nodes do
   is unstable.
   """
 
-  @spec region_nodes(String.t()) :: [atom()]
+  @spec region_nodes(String.t() | nil) :: [atom()]
   def region_nodes(region) when is_binary(region) do
     :syn.members(RegionNodes, region)
     |> Enum.map(fn {_pid, [node: node]} -> node end)
     |> Enum.sort()
   end
 
+  def region_nodes(nil), do: []
+
   @doc """
   Picks the node to launch the Postgres connection on.
 
   If there are not two nodes in a region the connection is established from
   the `default` node given.
   """
-  @spec launch_node(String.t(), String.t(), atom()) :: atom()
+  @spec launch_node(String.t(), String.t() | nil, atom()) :: atom()
   def launch_node(tenant_id, region, default) do
     case region_nodes(region) do
       [node] ->

mix.exs

@@ -4,7 +4,7 @@ defmodule Realtime.MixProject do
   def project do
     [
       app: :realtime,
-      version: "2.25.47",
+      version: "2.25.48",
       elixir: "~> 1.14.0",
       elixirc_paths: elixirc_paths(Mix.env()),
       start_permanent: Mix.env() == :prod,