chore(generator): use global var for autopopulated fields

Author: hebaalazzeh

packages/gapic-generator/gapic/ads-templates/%namespace/%name/%version/%sub/services/%service/client.py.j2

@@ -1,3 +1,10 @@
+{% set has_auto_populated_fields = namespace(value=false) %}
+{% for method in service.methods.values() %}
+  {% set method_settings = api.all_method_settings.get(method.meta.address.proto) %}
+  {% if method_settings and method_settings.auto_populated_fields %}
+    {% set has_auto_populated_fields.value = true %}
+  {% endif %}
+{% endfor %}
 {% extends '_base.py.j2' %}
 
 {% block content %}
@@ -7,7 +14,7 @@ from collections import OrderedDict
 import os
 import re
 from typing import Callable, Dict, Mapping, MutableMapping, MutableSequence, Optional, {% if service.any_server_streaming %}Iterable, {% endif %}{% if service.any_client_streaming %}Iterator, {% endif %}Sequence, Tuple, Type, Union, cast
-{% if api.all_method_settings.values()|map(attribute="auto_populated_fields", default=[])|select|list %}
+{% if has_auto_populated_fields.value %}
 import uuid
 {% endif %}
 {% if service.any_deprecated %}

packages/gapic-generator/gapic/templates/%namespace/%name_%version/%sub/services/%service/async_client.py.j2

@@ -1,3 +1,10 @@
+{% set has_auto_populated_fields = namespace(value=false) %}
+{% for method in service.methods.values() %}
+  {% set method_settings = api.all_method_settings.get(method.meta.address.proto) %}
+  {% if method_settings and method_settings.auto_populated_fields %}
+    {% set has_auto_populated_fields.value = true %}
+  {% endif %}
+{% endfor %}
 {% extends "_base.py.j2" %}
 
 {% block content %}
@@ -8,7 +15,7 @@ import logging as std_logging
 from collections import OrderedDict
 import re
 from typing import Dict, Callable, Mapping, MutableMapping, MutableSequence, Optional, {% if service.any_server_streaming %}AsyncIterable, Awaitable, {% endif %}{% if service.any_client_streaming %}AsyncIterator, {% endif %}Sequence, Tuple, Type, Union
-{% if api.all_method_settings.values()|map(attribute="auto_populated_fields", default=[])|select|list %}
+{% if has_auto_populated_fields.value %}
 import uuid
 {% endif %}
 {% if service.any_deprecated %}

packages/gapic-generator/gapic/templates/%namespace/%name_%version/%sub/services/%service/client.py.j2

@@ -1,5 +1,12 @@
 {# TODO(https://github.com/googleapis/gapic-generator-python/issues/2121): Remove the following variable (and the condition later in this file) for async rest transport once support for it is GA. #}
 {% set rest_async_io_enabled = api.all_library_settings[api.naming.proto_package].python_settings.experimental_features.rest_async_io_enabled %}
+{% set has_auto_populated_fields = namespace(value=false) %}
+{% for method in service.methods.values() %}
+  {% set method_settings = api.all_method_settings.get(method.meta.address.proto) %}
+  {% if method_settings and method_settings.auto_populated_fields %}
+    {% set has_auto_populated_fields.value = true %}
+  {% endif %}
+{% endfor %}
 {% extends '_base.py.j2' %}
 
 {% block content %}
@@ -16,7 +23,7 @@ import logging as std_logging
 import os
 import re
 from typing import Dict, Callable, Mapping, MutableMapping, MutableSequence, Optional, {% if service.any_server_streaming %}Iterable, {% endif %}{% if service.any_client_streaming %}Iterator, {% endif %}Sequence, Tuple, Type, Union, cast
-{% if api.all_method_settings.values()|map(attribute="auto_populated_fields", default=[])|select|list %}
+{% if has_auto_populated_fields.value %}
 import uuid
 {% endif %}
 import warnings
@@ -453,7 +460,8 @@ class {{ service.client_name }}(metaclass={{ service.client_name }}Meta):
         # NOTE (b/349488459): universe validation is disabled until further notice.
         return True
 
-    {% if api.all_method_settings.values()|map(attribute="auto_populated_fields", default=[])|select|list %}
+    {% if has_auto_populated_fields.value %}
+
     @staticmethod
     def _setup_request_id(request, field_name: str, is_proto3_optional: bool):
         """Populate a UUID4 field in the request if it is not already set.

packages/gapic-generator/gapic/templates/tests/unit/gapic/%name_%version/%sub/test_%service.py.j2

@@ -1,5 +1,12 @@
 {# TODO(https://github.com/googleapis/gapic-generator-python/issues/2121): Remove the following variable (and the condition later in this file) for async rest transport once support for it is GA. #}
 {% set rest_async_io_enabled = api.all_library_settings[api.naming.proto_package].python_settings.experimental_features.rest_async_io_enabled %}
+{% set has_auto_populated_fields = namespace(value=false) %}
+{% for method in service.methods.values() %}
+  {% set method_settings = api.all_method_settings.get(method.meta.address.proto) %}
+  {% if method_settings and method_settings.auto_populated_fields %}
+    {% set has_auto_populated_fields.value = true %}
+  {% endif %}
+{% endfor %}
 {% extends "_base.py.j2" %}
 
 {% block content %}
@@ -8,7 +15,7 @@
 
 import os
 import asyncio
-{% if api.all_method_settings.values()|map(attribute="auto_populated_fields", default=[])|select|list %}
+{% if has_auto_populated_fields.value %}
 import re
 {% endif %}
 from unittest import mock
@@ -107,7 +114,7 @@ CRED_INFO_JSON = {
     "principal": "service-account@example.com",
 }
 CRED_INFO_STRING = json.dumps(CRED_INFO_JSON)
-{% if api.all_method_settings.values()|map(attribute="auto_populated_fields", default=[])|select|list %}
+{% if has_auto_populated_fields.value %}
 _UUID4_RE = re.compile(r"{{ uuid4_re }}")
 {% endif %}
 
@@ -434,7 +441,7 @@ def test__add_cred_info_for_auth_errors_no_get_cred_info(error_code):
     client._add_cred_info_for_auth_errors(error)
     assert error.details == []
 
-{% if api.all_method_settings.values()|map(attribute="auto_populated_fields", default=[])|select|list %}
+{% if has_auto_populated_fields.value %}
 def test__setup_request_id():
     class MockRequest:
         def __init__(self, **kwargs):