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76faebd234
Not sure if this is the Elixir-y way to do this, but seems more logical
than hardcoding values such as redis connection.
Also went through and improved how string formatting was performed
throughout the app. Rather than "combining" <> "strings" this way, I'm
now just doing "#${variable}#{formatting}", which looks a lot cleaner.
46 lines
983 B
Elixir
46 lines
983 B
Elixir
defmodule PrivacyRevolver.Router do
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@fallback_str Application.fetch_env!(:privacy_revolver, :fallback_str)
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use Plug.Router
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plug :match
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plug :dispatch
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get "/" do
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send_resp(conn, 200, "")
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end
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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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path = Enum.join(glob, "/")
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{:ok, instances} = Redix.command(
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:redix,
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["LRANGE", service, "0", "-1"]
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)
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# Either pick a random available instance,
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# 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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{:ok, result} = Redix.command(
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:redix,
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["GET", "#{service}#{@fallback_str}"]
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)
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result
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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(
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"location",
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"#{instance}/#{path}"
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)
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end
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end
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