add .gustyignore functionality

Author: chriscardillo

gusty/building.py

@@ -81,6 +81,7 @@ def create_schematic(dag_dir, parsers=default_parsers):
         }
         for dir, subdirs, files in os.walk(dag_dir)
         if not os.path.basename(dir).startswith(("_", "."))
+        and not os.path.exists(dir + "/.gustyignore")
     }
 
 

tests/dags/with_metadata/ignored/.gustyignore

@@ -0,0 +1 @@
+print("I should be ignored")

tests/dags/with_metadata/ignored/ignored.py

@@ -191,3 +191,7 @@ def test_context_rendering_omits_sql(dag):
 
 def test_context_rendering_py(dag):
     assert dag.task_dict["py_task"].__dict__["python_callable"]() == "hey"
+
+
+def test_gusty_ignored_folder(dag):
+    assert "ignored.ignored_ignored" not in dag.task_dict.keys()