First batch of refactoring, using the app factory pattern

core/admin/mailu/configuration.py

@@ -0,0 +1,70 @@
+import os
+
+
+DEFAULT_CONFIG = {
+    # Specific to the admin UI
+    'SQLALCHEMY_DATABASE_URI': 'sqlite:////data/main.db',
+    'SQLALCHEMY_TRACK_MODIFICATIONS': False,
+    'DOCKER_SOCKET': 'unix:///var/run/docker.sock',
+    'BABEL_DEFAULT_LOCALE': 'en',
+    'BABEL_DEFAULT_TIMEZONE': 'UTC',
+    'BOOTSTRAP_SERVE_LOCAL': True,
+    'RATELIMIT_STORAGE_URL': 'redis://redis/2',
+    'QUOTA_STORAGE_URL': 'redis://redis/1',
+    'DEBUG': False,
+    'DOMAIN_REGISTRATION': False,
+    # Statistics management
+    'INSTANCE_ID_PATH': '/data/instance',
+    'STATS_ENDPOINT': '0.{}.stats.mailu.io',
+    # Common configuration variables
+    'SECRET_KEY': 'changeMe',
+    'DOMAIN': 'mailu.io',
+    'HOSTNAMES': 'mail.mailu.io,alternative.mailu.io,yetanother.mailu.io',
+    'POSTMASTER': 'postmaster',
+    'TLS_FLAVOR': 'cert',
+    'AUTH_RATELIMIT': '10/minute;1000/hour',
+    'DISABLE_STATISTICS': 'False',
+    # Mail settings
+    'DMARC_RUA': None,
+    'DMARC_RUF': None,
+    'WELCOME': 'False',
+    'WELCOME_SUBJECT': 'Dummy welcome topic',
+    'WELCOME_BODY': 'Dummy welcome body',
+    'DKIM_SELECTOR': 'dkim',
+    'DKIM_PATH': '/dkim/{domain}.{selector}.key',
+    'DEFAULT_QUOTA': 1000000000,
+    # Web settings
+    'SITENAME': 'Mailu',
+    'WEBSITE': 'https://mailu.io',
+    'WEB_ADMIN': '/admin',
+    'WEB_WEBMAIL': '/webmail',
+    'RECAPTCHA_PUBLIC_KEY': '',
+    'RECAPTCHA_PRIVATE_KEY': '',
+    # Advanced settings
+    'PASSWORD_SCHEME': 'BLF-CRYPT',
+    # Host settings
+    'HOST_IMAP': 'imap',
+    'HOST_POP3': 'imap',
+    'HOST_SMTP': 'smtp',
+    'HOST_WEBMAIL': 'webmail',
+    'HOST_FRONT': 'front',
+    'HOST_AUTHSMTP': os.environ.get('HOST_SMTP', 'smtp'),
+    'POD_ADDRESS_RANGE': None
+}
+
+
+class ConfigManager(object):
+    """ Naive configuration manager that uses environment only
+    """
+
+    def __init__(self):
+        self.config = {
+            os.environ.get(key, value)
+            for key, value in DEFAULT_CONFIG.items()
+        }
+
+    def get(self, *args):
+        return self.config.get(*args)
+
+    def __getitem__(self, key):
+        return self.get(key)