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ash_phoenix
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Utilities for integrating Ash and Phoenix
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lib/ash_phoenix/plug/check_codegen_status.ex
# SPDX-FileCopyrightText: 2020 ash_phoenix contributors <https://github.com/ash-project/ash_phoenix/graphs.contributors>
#
# SPDX-License-Identifier: MIT
defmodule AshPhoenix.Plug.CheckCodegenStatus do
@moduledoc """
A plug that checks if there are pending codegen tasks for your application.
Place `plug AshPhoenix.Plug.CheckCodegenStatus` just after `plug Phoenix.CodeReloader` in your endpoint.
"""
@behaviour Plug
alias Plug.Conn
def init(opts) do
opts
end
def call(%Conn{} = conn, _opts) do
extensions =
:persistent_term.get(:ash_codegen_extensions, nil) ||
set_extensions()
Enum.flat_map(extensions, fn extension ->
try do
if function_exported?(extension, :codegen, 1) do
extension.codegen(["--dev", "--check"])
end
[]
rescue
e in Ash.Error.Framework.PendingCodegen ->
Enum.to_list(e.diff)
_ ->
[]
end
end)
|> case do
[] ->
conn
diff ->
{:current_stacktrace, stack} = Process.info(self(), :current_stacktrace)
Plug.Conn.WrapperError.reraise(
conn,
:error,
Ash.Error.Framework.PendingCodegen.exception(diff: diff, explain: true),
Enum.drop(stack, 1)
)
end
end
defp set_extensions do
extensions = Ash.Mix.Tasks.Helpers.extensions!([])
:persistent_term.put(:ash_codegen_extensions, extensions)
extensions
end
end