mirror of
https://github.com/benbusby/farside.git
synced 2025-04-19 18:38:42 +00:00
56b9c52528
This introduces a number of new changes: - Services are now inserted into redis with a prefix prepended to the key name. This allows for easier filtering to get only live instances. - The home page now uses an eex template for displaying all live instances for every service, determined by the last update - A "last_updated" field was added - farside.ex was added to contain all functionality related to querying for instances (WIP) - Other improvements
65 lines
1.3 KiB
Elixir
65 lines
1.3 KiB
Elixir
defmodule Farside.Router do
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@index Application.fetch_env!(:farside, :index)
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@fallback_str Application.fetch_env!(:farside, :fallback_str)
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@service_prefix Application.fetch_env!(:farside, :service_prefix)
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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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resp =
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EEx.eval_file(
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@index,
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last_updated: Farside.get_last_updated(),
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services: Farside.get_services_map()
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)
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send_resp(conn, 200, resp)
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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} =
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Redix.command(
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:redix,
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[
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"LRANGE",
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"#{@service_prefix}#{service}",
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"0",
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"-1"
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]
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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 =
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if Enum.count(instances) > 0 do
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Enum.random(instances)
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else
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{:ok, result} =
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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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