init commit

lib/workload_service_web/controllers/fallback_controller.ex

@@ -0,0 +1,28 @@
+defmodule WorkloadServiceWeb.FallbackController do
+  use WorkloadServiceWeb, :controller
+
+  def call(conn, {:error, :not_found}) do
+    conn
+    |> put_status(:not_found)
+    |> put_view(json: WorkloadServiceWeb.ErrorJSON)
+    |> render(:"404")
+  end
+
+  def call(conn, {:error, reason}) when is_atom(reason) do
+    conn
+    |> put_status(:unprocessable_entity)
+    |> json(%{error: Atom.to_string(reason)})
+  end
+
+  def call(conn, {:error, %{errors: errors}}) do
+    conn
+    |> put_status(:unprocessable_entity)
+    |> json(%{errors: errors})
+  end
+
+  def call(conn, {:error, reason}) do
+    conn
+    |> put_status(:unprocessable_entity)
+    |> json(%{error: inspect(reason)})
+  end
+end