refact(dbt-fal): better handling of reconstructed adapter env

projects/adapter/src/dbt/adapters/fal/impl.py

@@ -5,6 +5,7 @@
 from dbt.config.profile import Profile
 from dbt.adapters.base.impl import BaseAdapter, BaseRelation
 from dbt.adapters.factory import FACTORY
+from dbt.adapters.fal_experimental.adapter import IS_RECONSTRUCTED
 
 # TODO: offer in `from isolate import is_agent`
 from isolate.connections.common import is_agent
@@ -96,7 +97,7 @@ def load_profiles_info() -> Tuple[Profile, Dict[str, bool], Dict[str, bool]]:
 INHERIT_PROPERTIES = defaultdict(lambda: True)
 
 # NOTE: Should this file run on isolate agents? Could we skip it entirely and build a FalEncAdapterWrapper directly?
-if not is_agent():
+if not IS_RECONSTRUCTED:
     DB_PROFILE, PROFILE_PROPERTIES, ARGS_PROPERTIES = load_profiles_info()
     DB_RELATION = FACTORY.get_relation_class_by_name(DB_PROFILE.credentials.type)
 

projects/adapter/src/dbt/adapters/fal_experimental/adapter.py

@@ -27,6 +27,8 @@
 
 from .utils import extra_path, get_fal_scripts_path, retrieve_symbol
 
+IS_RECONSTRUCTED = False
+
 
 def run_with_adapter(code: str, adapter: BaseAdapter, config: RuntimeConfig) -> Any:
     # main symbol is defined during dbt-fal's compilation
@@ -50,6 +52,10 @@ def _isolated_runner(
     # This function can be run in an entirely separate
     # process or an environment, so we need to reconstruct
     # the DB adapter solely from the config.
+    global IS_RECONSTRUCTED
+    IS_RECONSTRUCTED = True
+    from .adapter_support import reconstruct_adapter
+
     adapter = reconstruct_adapter(config, manifest, macro_manifest)
     fal_scripts_path = get_fal_scripts_path(config)
     if local_packages is not None: