I have used following approach
Controller
def create(conn, %{"file" => %Plug.Upload{path: fullpath, content_type: "text/csv"}, "email" => email}) do
conn
|> render_json_response({:ok, %{message: "Request Initiated"}})
CSVParser.call(fullpath, email)
end
CSVParser.ex
def call(csv_path, email) do
task = Task.async(fn -> do_async_task(csv_path, email) end)
Task.await(task, :infinity)
end
def do_async_task(csv_path, email) do
csv_path
|> read_csv
|> dump_to_csv
|> add_attachment
|> Email.create(email)
|> Email.send_email
end
But If i hit the api simultaneously the other request is not returning Request Initiated they just keep waiting.
Also I am getting this error message
expected action/2 to return a Plug.Conn, all plugs must receive a connection (conn) and return a connection.
