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diff --git a/lib/open_api_spex/plug/put_api_spec.ex b/lib/open_api_spex/plug/put_api_spec.ex
index ee2c139..9b02f83 100644
--- a/lib/open_api_spex/plug/put_api_spec.ex
+++ b/lib/open_api_spex/plug/put_api_spec.ex
@@ -1,37 +1,51 @@
defmodule OpenApiSpex.Plug.PutApiSpec do
@moduledoc """
Module plug that calls a given module to obtain the Api Spec and store it as private in the Conn.
This allows downstream plugs to use the API spec for casting, validating and rendering.
## Example
plug OpenApiSpex.Plug.PutApiSpec, module: MyAppWeb.ApiSpec
"""
@behaviour Plug
@impl Plug
def init(opts = [module: _mod]), do: opts
@impl Plug
def call(conn, module: mod) do
- spec = %OpenApiSpex.OpenApi{} = mod.spec()
+ {spec, operation_lookup} =
+ case Application.get_env(:open_api_spex, mod) do
+ nil -> build_spec(mod)
+ cached -> cached
+ end
+
private_data =
conn
|> Map.get(:private)
|> Map.get(:open_api_spex, %{})
|> Map.put(:spec, spec)
- |> Map.put(:operation_lookup, build_operation_lookup(spec))
+ |> Map.put(:operation_lookup, operation_lookup)
Plug.Conn.put_private(conn, :open_api_spex, private_data)
end
+ @spec build_spec(module) :: {OpenApiSpex.OpenApi.t, %{String.t => OpenApiSpex.Operation.t}}
+ defp build_spec(mod) do
+ spec = mod.spec()
+ operation_lookup = build_operation_lookup(spec)
+ Application.put_env(:open_api_spex, mod, {spec, operation_lookup})
+ {spec, operation_lookup}
+ end
+
+ @spec build_operation_lookup(OpenApiSpex.OpenApi.t) :: %{String.t => OpenApiSpex.Operation.t}
defp build_operation_lookup(spec = %OpenApiSpex.OpenApi{}) do
spec
|> Map.get(:paths)
|> Stream.flat_map(fn {_name, item} -> Map.values(item) end)
|> Stream.filter(fn x -> match?(%OpenApiSpex.Operation{}, x) end)
|> Stream.map(fn operation -> {operation.operationId, operation} end)
|> Enum.into(%{})
end
end
\ No newline at end of file

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