farside/lib/farside/router.ex
Ben Busby 1be19a8a29
Update throttle test to reflect new behavior
The "throttling" performed by Farside now redirects to the same instance
as before, rather than outright blocking the connection.
2022-03-18 13:59:35 -06:00

68 lines
1.3 KiB
Elixir

defmodule Farside.Router do
@index Application.fetch_env!(:farside, :index)
@route Application.fetch_env!(:farside, :route)
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
r_path = String.slice(conn.request_path, 2..-1)
resp =
EEx.eval_file(
@route,
service: service,
instance_url: r_path
)
send_resp(conn, 200, resp)
end
get "/:service/*glob" do
path = Enum.join(glob, "/")
instance = cond do
conn.assigns[:throttle] != nil ->
Farside.last_instance(service)
true ->
Farside.pick_instance(service)
end
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