farside/lib/farside/router.ex
Ben Busby 97f1d26cbc
Include query params in service instance redirect
Query params ("/watch?v=dQw4w9WgXcQ" for instance) would previously be
lost in Farside redirects. This now includes them if they were included
in the original request.
2021-11-15 17:15:36 -07:00

48 lines
943 B
Elixir

defmodule Farside.Router do
@index Application.fetch_env!(:farside, :index)
use Plug.Router
plug(Farside.Throttle)
plug(:match)
plug(:dispatch)
get "/" do
resp =
EEx.eval_file(
@index,
last_updated: Farside.get_last_updated(),
services: Farside.get_services_map()
)
send_resp(conn, 200, resp)
end
get "/ping" do
# Useful for app healthcheck
{:ok, resp} = Redix.command(:redix, ["PING"])
send_resp(conn, 200, resp)
end
get "/:service/*glob" do
path = Enum.join(glob, "/")
instance = Farside.pick_instance(service)
params =
cond do
String.length(conn.query_string) > 0 ->
"?#{conn.query_string}"
true ->
""
end
# Redirect to the available instance
conn
|> Plug.Conn.resp(:found, "")
|> Plug.Conn.put_resp_header(
"location",
"#{instance}/#{path}#{params}"
)
end
end