Add API endpoint for issuing programs certificates

Allows staff users to manually enqueue the task responsible for awarding programs certificates. ECOM-3692.

lms/djangoapps/support/tests/test_programs.py

+# pylint: disable=missing-docstring
+from django.core.urlresolvers import reverse
+from django.test import TestCase
+import mock
+from oauth2_provider.tests.factories import AccessTokenFactory, ClientFactory
+
+from openedx.core.djangoapps.programs.tests.mixins import ProgramsApiConfigMixin
+from student.tests.factories import UserFactory
+
+
+class IssueProgramCertificatesViewTests(TestCase, ProgramsApiConfigMixin):
+    password = 'password'
+
+    def setUp(self):
+        super(IssueProgramCertificatesViewTests, self).setUp()
+
+        self.create_programs_config()
+
+        self.path = reverse('support:programs-certify')
+        self.user = UserFactory(password=self.password, is_staff=True)
+        self.data = {'username': self.user.username}
+        self.headers = {}
+
+        self.client.login(username=self.user.username, password=self.password)
+
+    def _verify_response(self, status_code):
+        """Verify that the endpoint returns the provided status code and enqueues the task if appropriate."""
+        with mock.patch('lms.djangoapps.support.views.programs.award_program_certificates.delay') as mock_task:
+            response = self.client.post(self.path, self.data, **self.headers)
+
+        self.assertEqual(response.status_code, status_code)
+        self.assertEqual(status_code == 200, mock_task.called)
+
+    def test_authentication_required(self):
+        """Verify that the endpoint requires authentication."""
+        self.client.logout()
+
+        self._verify_response(403)
+
+    def test_session_auth(self):
+        """Verify that the endpoint supports session auth."""
+        self._verify_response(200)
+
+    def test_oauth(self):
+        """Verify that the endpoint supports OAuth 2.0."""
+        access_token = AccessTokenFactory(user=self.user, client=ClientFactory()).token  # pylint: disable=no-member
+        self.headers['HTTP_AUTHORIZATION'] = 'Bearer ' + access_token
+
+        self.client.logout()
+
+        self._verify_response(200)
+
+    def test_staff_permissions_required(self):
+        """Verify that staff permissions are required to access the endpoint."""
+        self.user.is_staff = False
+        self.user.save()  # pylint: disable=no-member
+
+        self._verify_response(403)
+
+    def test_certification_disabled(self):
+        """Verify that the endpoint returns a 400 when program certification is disabled."""
+        self.create_programs_config(enable_certification=False)
+
+        self._verify_response(400)
+
+    def test_username_required(self):
+        """Verify that the endpoint returns a 400 when a username isn't provided."""
+        self.data.pop('username')
+
+        self._verify_response(400)

lms/djangoapps/support/urls.py

@@ -16,4 +16,5 @@ urlpatterns = patterns(
         views.EnrollmentSupportListView.as_view(),
         name="enrollment_list"
     ),
+    url(r'^programs/certify/$', views.IssueProgramCertificatesView.as_view(), name='programs-certify'),
 )

lms/djangoapps/support/views/__init__.py

@@ -6,3 +6,4 @@ from .index import *
 from .certificate import *
 from .enrollments import *
 from .refund import *
+from .programs import IssueProgramCertificatesView

lms/djangoapps/support/views/programs.py

+# pylint: disable=missing-docstring
+import logging
+
+from rest_framework import permissions, status, views
+from rest_framework.authentication import SessionAuthentication
+from rest_framework.response import Response
+from rest_framework_oauth.authentication import OAuth2Authentication
+
+from openedx.core.djangoapps.programs.models import ProgramsApiConfig
+from openedx.core.djangoapps.programs.tasks.v1.tasks import award_program_certificates
+
+
+log = logging.getLogger(__name__)
+
+
+class IssueProgramCertificatesView(views.APIView):
+    """
+    **Use Cases**
+
+        Trigger the task responsible for awarding program certificates on behalf
+        of the user with the provided username.
+
+    **Example Requests**
+
+        POST /support/programs/certify/
+        {
+            'username': 'foo'
+        }
+
+    **Returns**
+
+        * 200 on success.
+        * 400 if program certification is disabled or a username is not provided.
+        * 401 if the request is not authenticated.
+        * 403 if the authenticated user does not have staff permissions.
+    """
+    authentication_classes = (SessionAuthentication, OAuth2Authentication)
+    permission_classes = (permissions.IsAuthenticated, permissions.IsAdminUser,)
+
+    def post(self, request):
+        if not ProgramsApiConfig.current().is_certification_enabled:
+            return Response(
+                {'error': 'Program certification is disabled.'},
+                status=status.HTTP_400_BAD_REQUEST
+            )
+
+        username = request.data.get('username')
+        if username:
+            log.info('Enqueuing program certification task for user [%s]', username)
+            award_program_certificates.delay(username)
+
+            return Response()
+        else:
+            return Response(
+                {'error': 'A username is required in order to issue program certificates.'},
+                status=status.HTTP_400_BAD_REQUEST
+            )