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https://github.com/benbusby/farside.git
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9a6d680213
Router has been updated with a basic /:service/*glob endpoint, which retrieves a list of instances for the requested service and picks a random one to forward the user to (or falls back to a default instance if none are found). Should probably add a check to make sure the requested service exists first.
29 lines
770 B
Elixir
29 lines
770 B
Elixir
defmodule PrivacyRevolver.Router do
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use Plug.Router
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plug :match
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plug :dispatch
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get "/ping" do
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# Useful for app healthcheck
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{:ok, resp} = Redix.command(:redix, ["PING"])
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send_resp(conn, 200, resp)
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end
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get "/:service/*glob" do
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full_path = "/" <> Enum.join(glob, "/")
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{:ok, instances} = Redix.command(:redix, ["LRANGE", service, "0", "-1"])
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# Either pick a random available instance, or fall back to the default one
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instance = if Enum.count(instances) > 0 do
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Enum.random(instances)
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else
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Redix.command(:redix, ["GET", service <> "-fallback"])
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end
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# Redirect to the available instance
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conn |>
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Plug.Conn.resp(:found, "") |>
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Plug.Conn.put_resp_header("location", instance <> full_path)
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end
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end
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