Removed MariaDB/MySQL Support (#49)

Dockerfile

@@ -3,7 +3,6 @@ FROM python:3.8
 RUN apt-get update && \
     apt-get install -y --no-install-recommends \
             build-essential \
-            default-libmysqlclient-dev \
             gettext \
             git \
             libffi-dev \
@@ -51,7 +50,6 @@ RUN pip3 install -U \
     pip3 install \
         -r requirements.txt \
         -r requirements/memcached.txt \
-        -r requirements/mysql.txt \
         gunicorn django-extensions ipython && \
     rm -rf ~/.cache/pip
 

doc/admin/config.rst

@@ -135,30 +135,23 @@ Database settings
 Example::
 
     [database]
-    backend=mysql
+    backend=postgresql
     name=pretix
     user=pretix
     password=abcd
     host=localhost
     port=3306
 
 ``backend``
-    One of ``mysql``, ``sqlite3``, ``oracle`` and ``postgresql``.
+    One of ``sqlite3``, ``oracle`` and ``postgresql``.
     Default: ``sqlite3``.
 
-    If you use MySQL, be sure to create your database using
-    ``CREATE DATABASE <dbname> CHARACTER SET utf8;``. Otherwise, Unicode
-    support will not properly work.
-
 ``name``
     The database's name. Default: ``db.sqlite3``.
 
 ``user``, ``password``, ``host``, ``port``
     Connection details for the database connection. Empty by default.
 
-``galera``
-    Indicates if the database backend is a MySQL/MariaDB Galera cluster and
-    turns on some optimizations/special case handlers. Default: ``False``
 
 .. _`config-replica`:
 

src/pretix/settings.py

@@ -5,6 +5,7 @@
 from urllib.parse import urlparse
 from .settings_helpers import build_db_tls_config, build_redis_tls_config
 import django.conf.locale
+from django.core.exceptions import ImproperlyConfigured
 from django.utils.crypto import get_random_string
 from kombu import Queue
 from pkg_resources import iter_entry_points
@@ -71,17 +72,11 @@
 db_backend = config.get('database', 'backend', fallback='sqlite3')
 if db_backend == 'postgresql_psycopg2':
     db_backend = 'postgresql'
-DATABASE_IS_GALERA = config.getboolean('database', 'galera', fallback=False)
-if DATABASE_IS_GALERA and 'mysql' in db_backend:
-    db_options = {
-        'init_command': 'SET SESSION wsrep_sync_wait = 1;'
-    }
-else:
-    db_options = {}
+if db_backend == 'mysql':
+    raise ImproperlyConfigured("MySQL/MariaDB is not supported")
 
-if 'mysql' in db_backend:
-    db_options['charset'] = 'utf8mb4'
-JSON_FIELD_AVAILABLE = db_backend in ('mysql', 'postgresql')
+JSON_FIELD_AVAILABLE = db_backend == 'postgresql'
+db_options = {}
 
 db_tls_config = build_db_tls_config(config, db_backend)
 if (db_tls_config is not None):
@@ -98,10 +93,7 @@
         'PORT': config.get('database', 'port', fallback=''),
         'CONN_MAX_AGE': 0 if db_backend == 'sqlite3' else 120,
         'OPTIONS': db_options,
-        'TEST': {
-            'CHARSET': 'utf8mb4',
-            'COLLATION': 'utf8mb4_unicode_ci',
-        } if 'mysql' in db_backend else {}
+        'TEST': {}
     }
 }
 DATABASE_REPLICA = 'default'
@@ -116,10 +108,7 @@
         'PORT': config.get('replica', 'port', fallback=DATABASES['default']['PORT']),
         'CONN_MAX_AGE': 0 if db_backend == 'sqlite3' else 120,
         'OPTIONS': db_options,
-        'TEST': {
-            'CHARSET': 'utf8mb4',
-            'COLLATION': 'utf8mb4_unicode_ci',
-        } if 'mysql' in db_backend else {}
+        'TEST': {}
     }
     DATABASE_ROUTERS = ['pretix.helpers.database.ReplicaRouter']
 

src/setup.py

@@ -203,7 +203,6 @@ def run(self):
             'freezegun',
         ],
         'memcached': ['pylibmc'],
-        'mysql': ['mysqlclient'],
     },
 
     packages=find_packages(exclude=['tests', 'tests.*']),