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Plug that converts response to Nebo #15 API spec format.
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lib/eview/plugs/idempotency.ex
defmodule EView.Plugs.Idempotency do
@moduledoc """
This Plug allows to take `X-Idempotency-Key` header from request and sent it back to client.
## Examples
Modify your `endpoint.ex` and add before `plug MyApp.Router`:
plug EView.Plugs.Idempotency
"""
@behaviour Plug
import Plug.Conn
def init(opts), do: opts
@spec call(Conn.t, any) :: Conn.t
def call(conn, _options) do
case get_req_header(conn, "x-idempotency-key") do
[idempotency_key | _] ->
conn
|> put_resp_header("x-idempotency-key", idempotency_key)
_ ->
conn
end
end
end