From ce433a565e77e58407ea53da3fdcd90fd0307db5 Mon Sep 17 00:00:00 2001
From: Daniel Azuma <dazuma@google.com>
Date: Fri, 15 Jul 2022 13:11:30 -0700
Subject: [PATCH] chore: Warn and continue when failing to load a spec (#9989)

---
 lib/google_apis/generator/elixir_generator.ex | 44 ++++++++-------
 .../generator/elixir_generator/token.ex       | 54 +++++++++----------
 2 files changed, 51 insertions(+), 47 deletions(-)

diff --git a/lib/google_apis/generator/elixir_generator.ex b/lib/google_apis/generator/elixir_generator.ex
index 33f6196fd5..8bb39b7599 100644
--- a/lib/google_apis/generator/elixir_generator.ex
+++ b/lib/google_apis/generator/elixir_generator.ex
@@ -37,26 +37,30 @@ defmodule GoogleApis.Generator.ElixirGenerator do
   """
   @spec generate_client(ApiConfig.t()) :: any()
   def generate_client(api_config) do
-    token = Token.build(api_config)
-    if updated_discovery_revision?(token) do
-      token
-      |> load_models
-      |> set_model_filenames
-      |> update_model_properties
-      |> create_directories
-      |> write_model_files
-      |> load_global_optional_params
-      |> load_apis
-      |> set_api_filenames
-      |> write_api_files
-      |> write_connection
-      |> write_metadata
-      |> write_mix_exs
-      |> write_readme
-      |> write_license
-      |> write_gitignore
-      |> write_config_exs
-      |> write_test_helper_exs
+    case Token.build(api_config) do
+      nil ->
+        IO.puts("Unable to read spec file #{ApiConfig.google_spec_file(api_config)}")
+      token ->
+        if updated_discovery_revision?(token) do
+          token
+          |> load_models
+          |> set_model_filenames
+          |> update_model_properties
+          |> create_directories
+          |> write_model_files
+          |> load_global_optional_params
+          |> load_apis
+          |> set_api_filenames
+          |> write_api_files
+          |> write_connection
+          |> write_metadata
+          |> write_mix_exs
+          |> write_readme
+          |> write_license
+          |> write_gitignore
+          |> write_config_exs
+          |> write_test_helper_exs
+        end
     end
     :ok
   end
diff --git a/lib/google_apis/generator/elixir_generator/token.ex b/lib/google_apis/generator/elixir_generator/token.ex
index 1bc2fff0ad..21593d0417 100644
--- a/lib/google_apis/generator/elixir_generator/token.ex
+++ b/lib/google_apis/generator/elixir_generator/token.ex
@@ -73,33 +73,33 @@ defmodule GoogleApis.Generator.ElixirGenerator.Token do
         String.downcase(ApiConfig.module_version(api_config))
       ])
 
-    rest_description =
-      api_config
-      |> ApiConfig.google_spec_file()
-      |> File.read!()
-      |> Poison.decode!(as: %RestDescription{})
-
-    {base_url, base_path} = determine_base_paths(rest_description)
-
-    resource_context =
-      ResourceContext.empty()
-      |> ResourceContext.with_namespace(namespace)
-      |> ResourceContext.with_base_path(base_path)
-
-    data_wrapped = has_data_wrapper_feature?(rest_description)
-
-    %__MODULE__{
-      filename: filename,
-      library_name: library_name,
-      namespace: namespace,
-      root_namespace: root_namespace,
-      root_dir: root_dir,
-      base_dir: base_dir,
-      base_url: base_url,
-      rest_description: rest_description,
-      resource_context: resource_context,
-      data_wrapped: data_wrapped
-    }
+    case api_config |> ApiConfig.google_spec_file() |> File.read() do
+      {:ok, content} ->
+        rest_description = Poison.decode!(content, as: %RestDescription{})
+        {base_url, base_path} = determine_base_paths(rest_description)
+
+        resource_context =
+          ResourceContext.empty()
+          |> ResourceContext.with_namespace(namespace)
+          |> ResourceContext.with_base_path(base_path)
+
+        data_wrapped = has_data_wrapper_feature?(rest_description)
+
+        %__MODULE__{
+          filename: filename,
+          library_name: library_name,
+          namespace: namespace,
+          root_namespace: root_namespace,
+          root_dir: root_dir,
+          base_dir: base_dir,
+          base_url: base_url,
+          rest_description: rest_description,
+          resource_context: resource_context,
+          data_wrapped: data_wrapped
+        }
+      _ ->
+        nil
+    end
   end
 
   defp determine_base_paths(rest_description) do