Refactoring the send to provider code out of the tasks folder

- building a rest endpoint to call that code to compliment the existing task based approach.

app/celery/provider_tasks.py

@@ -31,6 +31,47 @@ def retry_iteration_to_delay(retry=0):
     return delays.get(retry, 10)
 
 
+@notify_celery.task(bind=True, name="deliver_sms", max_retries=5, default_retry_delay=5)
+@statsd(namespace="tasks")
+def deliver_sms(self, notification_id):
+    try:
+        send_to_providers.send_sms_to_provider(notification_id)
+    except Exception as e:
+        try:
+            current_app.logger.error(
+                "RETRY: SMS notification {} failed".format(notification_id)
+            )
+            current_app.logger.exception(e)
+            self.retry(queue="retry", countdown=retry_iteration_to_delay(self.request.retries))
+        except self.MaxRetriesExceededError:
+            current_app.logger.error(
+                "RETRY FAILED: task send_sms_to_provider failed for notification {}".format(notification_id),
+                e
+            )
+            update_notification_status_by_id(notification_id, 'technical-failure')
+
+
+@notify_celery.task(bind=True, name="deliver_email", max_retries=5, default_retry_delay=5)
+@statsd(namespace="tasks")
+def deliver_email(self, notification_id):
+    try:
+        send_to_providers.send_email_response(notification_id)
+    except Exception as e:
+        try:
+            current_app.logger.error(
+                "RETRY: Email notification {} failed".format(notification_id)
+            )
+            current_app.logger.exception(e)
+            self.retry(queue="retry", countdown=retry_iteration_to_delay(self.request.retries))
+        except self.MaxRetriesExceededError:
+            current_app.logger.error(
+                "RETRY FAILED: task send_email_to_provider failed for notification {}".format(notification_id),
+                e
+            )
+            update_notification_status_by_id(notification_id, 'technical-failure')
+
+
+
 @notify_celery.task(bind=True, name="send-sms-to-provider", max_retries=5, default_retry_delay=5)
 @statsd(namespace="tasks")
 def send_sms_to_provider(self, service_id, notification_id):

app/delivery/rest.py

@@ -0,0 +1,34 @@
+from flask import Blueprint, jsonify
+
+from app.delivery import send_to_providers
+from app.models import EMAIL_TYPE
+from app.celery import provider_tasks
+from sqlalchemy.orm.exc import NoResultFound
+
+delivery = Blueprint('delivery', __name__)
+
+from app.errors import (
+    register_errors,
+    InvalidRequest
+)
+
+register_errors(delivery)
+
+
+@delivery.route('/deliver/notification/<uuid:notification_id>',  methods=['POST'])
+def send_notification_to_provider(notification_type, notification_id):
+
+    if notification_type == EMAIL_TYPE:
+        send_response(send_to_providers.send_email_response, provider_tasks.deliver_email, notification_id, 'send-email')
+    else:
+        send_response(send_to_providers.send_sms_response, provider_tasks.deliver_sms, notification_id, 'send-sms')
+    return jsonify({}), 204
+
+
+def send_response(send_call, task_call, notification_id, queue):
+    try:
+        send_call(notification_id)
+    except NoResultFound as e:
+        raise InvalidRequest(e, status_code=404)
+    except Exception as e:
+        task_call.apply_async((str(notification_id)), queue=queue)

app/delivery/send_to_providers.py

@@ -20,10 +20,9 @@ from app.dao.templates_dao import dao_get_template_by_id
 from app.models import SMS_TYPE, KEY_TYPE_TEST, BRANDING_ORG, EMAIL_TYPE
 
 
-def send_sms_to_provider(notification_id):
-    notification = get_notification_by_id(notification_id)
+def send_sms_to_provider(notification):
     service = dao_fetch_service_by_id(notification.service_id)
-    provider = provider_to_use(SMS_TYPE, notification_id)
+    provider = provider_to_use(SMS_TYPE, notification.id)
     if notification.status == 'created':
         template_model = dao_get_template_by_id(notification.template_id, notification.template_version)
         template = Template(
@@ -33,7 +32,7 @@ def send_sms_to_provider(notification_id):
         )
         if service.research_mode or notification.key_type == KEY_TYPE_TEST:
             send_sms_response.apply_async(
-                (provider.get_name(), str(notification_id), notification.to), queue='research-mode'
+                (provider.get_name(), str(notification.id), notification.to), queue='research-mode'
             )
             notification.billable_units = 0
         else:

tests/app/celery/test_provider_tasks.py

@@ -1,31 +1,8 @@
-import uuid
-from datetime import datetime
-
-import pytest
 from celery.exceptions import MaxRetriesExceededError
-from unittest.mock import ANY, call
-from notifications_utils.recipients import validate_phone_number, format_phone_number
-
-import app
-from app import statsd_client, mmg_client
 from app.celery import provider_tasks
 from app.celery.provider_tasks import send_sms_to_provider, send_email_to_provider
-from app.celery.research_mode_tasks import send_sms_response, send_email_response
 from app.clients.email import EmailClientException
-from app.clients.sms import SmsClientException
-from app.dao import notifications_dao, provider_details_dao
-from app.dao import provider_statistics_dao
-from app.dao.provider_statistics_dao import get_provider_statistics
-from app.models import (
-    Notification,
-    NotificationStatistics,
-    Job,
-    Organisation,
-    KEY_TYPE_NORMAL,
-    KEY_TYPE_TEST,
-    BRANDING_ORG,
-    BRANDING_BOTH
-)
+from app.models import Notification
 from tests.app.conftest import sample_notification
 
 

tests/app/delivery/test_send_to_providers.py

@@ -5,6 +5,7 @@ import pytest
 from mock import ANY
 
 import app
+from sqlalchemy.orm.exc import NoResultFound
 from app import mmg_client
 from app.dao import (provider_details_dao, notifications_dao, provider_statistics_dao)
 from app.dao.provider_statistics_dao import get_provider_statistics
@@ -46,6 +47,18 @@ def test_should_return_highest_priority_active_provider(notify_db, notify_db_ses
     assert send_to_providers.provider_to_use('sms', '1234').name == first.identifier
 
 
+def test_raises_not_found_exception_if_no_notification_for_id(notify_db, notify_db_session, mocker):
+    mocker.patch('app.mmg_client.send_sms')
+    mocker.patch('app.mmg_client.get_name', return_value="mmg")
+    notification_id = uuid.uuid4()
+
+    with pytest.raises(NoResultFound) as exc:
+        send_to_providers.send_sms_to_provider(notification_id)
+
+    assert str(exc.value) == "No notification for {}".format(str(notification_id))
+    app.mmg_client.send_sms.assert_not_called()
+
+
 def test_should_send_personalised_template_to_correct_sms_provider_and_persist(
     notify_db,
     notify_db_session,