Make is possible to configure the database via environment vars.

... and by extension via ansible vars from the edx/configuration
notifier role.

AUTHORS

@@ -6,4 +6,4 @@ Sarina Canelake <sarina@edx.org>
 Nimisha Asthagiri <nasthagiri@edx.org>
 Christina Roberts <christina@edx.org>
 Myles Fong <i@myles.hk>
-
+Matjaz Gregoric <matjaz@opencraft.com>

notifier/settings.py

@@ -5,12 +5,17 @@ import platform
 
 DATABASES = {
     'default': {
-        'ENGINE': 'django.db.backends.sqlite3', # Add 'postgresql_psycopg2', 'mysql', 'sqlite3' or 'oracle'.
-        'NAME':  os.path.join(os.getenv('NOTIFIER_DB_DIR', '.'), 'notifier.db'),
-        'USER': '',                      # Not used with sqlite3.
-        'PASSWORD': '',                  # Not used with sqlite3.
-        'HOST': '',                      # Set to empty string for localhost. Not used with sqlite3.
-        'PORT': '',                      # Set to empty string for default. Not used with sqlite3.
+        # Database backend defaults to 'sqlite3', but 'mysql' is also supported.
+        'ENGINE': os.getenv('NOTIFIER_DATABASE_ENGINE', 'django.db.backends.sqlite3'),
+        # Name should be set to database file path when using sqlite, and database name when using mysql.
+        'NAME': os.getenv('NOTIFIER_DATABASE_NAME', os.path.join(os.getenv('NOTIFIER_DB_DIR', '.'), 'notifier.db')),
+        # User and password are not used by sqlite, but you will have to set them when using mysql.
+        'USER': os.getenv('NOTIFIER_DATABASE_USER', ''),
+        'PASSWORD': os.getenv('NOTIFIER_DATABASE_PASSWORD', ''),
+        # Host is not used by sqlite. Empty string means localhost when using mysql.
+        'HOST': os.getenv('NOTIFIER_DATABASE_HOST', ''),
+        # Port is not used by sqlite. Empty string means default port when using mysql.
+        'PORT': os.getenv('NOTIFIER_DATABASE_PORT', ''),
     }
 }
 
@@ -203,4 +208,4 @@ LOCALE_PATHS = (os.path.join(os.path.dirname(os.path.dirname(__file__)), 'locale
 # Parameterize digest logo image url
 LOGO_IMAGE_URL = os.getenv('LOGO_IMAGE_URL', "{}/static/images/edx-theme/edx-logo-77x36.png".format(LMS_URL_BASE))
 
-DEAD_MANS_SNITCH_URL = os.getenv('DEAD_MANS_SNITCH_URL', '')
+DEAD_MANS_SNITCH_URL = os.getenv('DEAD_MANS_SNITCH_URL', '')
\ No newline at end of file

requirements.txt

@@ -15,6 +15,7 @@ kombu==3.0.37
 logilab-astng==0.24.3
 logilab-common==1.1.0
 mock==1.0.1
+MySQL-python==1.2.5
 pep8==1.6.2
 pylint==1.4.4
 python-dateutil==2.4.2