More idiomatic initialization of notification_sender

atst/app.py

@@ -29,6 +29,7 @@ from atst.utils import mailer
 from atst.utils.form_cache import FormCache
 from atst.utils.json import CustomJSONEncoder
 from atst.queue import queue
+from atst.utils.notification_sender import NotificationSender
 
 from logging.config import dictConfig
 from atst.utils.logging import JsonFormatter, RequestContextFilter
@@ -63,6 +64,7 @@ def make_app(config):
     make_csp_provider(app)
     make_crl_validator(app)
     make_mailer(app)
+    make_notification_sender(app)
     queue.init_app(app)
 
     db.init_app(app)
@@ -247,6 +249,10 @@ def make_mailer(app):
     app.mailer = mailer.Mailer(mailer_connection, sender)
 
 
+def make_notification_sender(app):
+    app.notification_sender = NotificationSender(queue, app.logger)
+
+
 def apply_json_logger():
     dictConfig(
         {

atst/utils/notification_sender.py

@@ -1,4 +1,6 @@
-from atst.queue import ATSTQueue, queue
+from logging import Logger
+
+from atst.queue import ATSTQueue
 from atst.database import db
 from atst.models import NotificationRecipient
 
@@ -6,11 +8,14 @@ from atst.models import NotificationRecipient
 class NotificationSender(object):
     EMAIL_SUBJECT = "ATST notification"
 
-    def __init__(self, queue: ATSTQueue):
+    def __init__(self, queue: ATSTQueue, logger: Logger):
         self.queue = queue
+        self.logger = logger
 
     def send(self, body, type_=None):
         recipients = self._get_recipients(type_)
+        self.logger.info(
+            "Sending a notification to these recipients: {}\n\n{}".format(recipients, body))
         self.queue.send_mail(recipients, self.EMAIL_SUBJECT, body)
 
     def _get_recipients(self, type_):
@@ -18,6 +23,3 @@ class NotificationSender(object):
             recipient.email
             for recipient in db.session.query(NotificationRecipient).all()
         ]
-
-
-notification_sender = NotificationSender(queue)

tests/utils/test_notification_sender.py

@@ -11,8 +11,8 @@ def mock_queue(queue):
 
 
 @pytest.fixture
-def notification_sender(mock_queue):
-    return NotificationSender(mock_queue)
+def notification_sender(mock_queue, mock_logger):
+    return NotificationSender(mock_queue, mock_logger)
 
 
 def test_can_send_notification(mock_queue, notification_sender):