automate: move working_dir to be set in constructor

app/terraform/__init__.py

@@ -1,27 +1,28 @@
-from abc import ABCMeta, abstractmethod
 import os
-from typing import Tuple, Optional, Any
+from typing import Tuple, Any, Optional
 
 import jinja2
 
-from app import app
 
-
-class BaseAutomation(metaclass=ABCMeta):
+class BaseAutomation():
     short_name: str = "base"
     description: str = "Abstract base automation."
     frequency: int
+    working_dir: Optional[str]
 
     """
     The short name of the automation provider. This is used as an opaque token throughout
     the portal system.
     """
 
-    @abstractmethod
-    def automate(self, working_dir: str, full: bool = False) -> Tuple[bool, str]:
+    def __init__(self, working_dir: Optional[str] = None):
+        super().__init__()
+        self.working_dir = working_dir
+
+    def automate(self, full: bool = False) -> Tuple[bool, str]:
         raise NotImplementedError()
 
-    def tmpl_write(self, filename: str, template: str, working_dir: str, **kwargs: Any) -> None:
+    def tmpl_write(self, filename: str, template: str, **kwargs: Any) -> None:
         """
         Write a Jinja2 template to the working directory for use by an automation module.
 
@@ -31,6 +32,8 @@ class BaseAutomation(metaclass=ABCMeta):
         :param kwargs: variables for use with the template
         :return: None
         """
+        if not self.working_dir:
+            raise RuntimeError("No working directory specified.")
         tmpl = jinja2.Template(template)
-        with open(os.path.join(working_dir, filename), 'w', encoding="utf-8") as tfconf:
+        with open(os.path.join(self.working_dir, filename), 'w', encoding="utf-8") as tfconf:
             tfconf.write(tmpl.render(**kwargs))