4 files changed, 109 insertions, 0 deletions
diff --git a/src/mailman/database/alembic/__init__.py b/src/mailman/database/alembic/__init__.py
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/src/mailman/database/alembic/__init__.py
diff --git a/src/mailman/database/alembic/env.py b/src/mailman/database/alembic/env.py
new file mode 100644
index 000000000..ee6d8293f
--- /dev/null
+++ b/src/mailman/database/alembic/env.py
@@ -0,0 +1,80 @@
+# Copyright (C) 2014 by the Free Software Foundation, Inc.
+#
+# This file is part of GNU Mailman.
+#
+# GNU Mailman is free software: you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free
+# Software Foundation, either version 3 of the License, or (at your option)
+# any later version.
+#
+# GNU Mailman is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+# more details.
+#
+# You should have received a copy of the GNU General Public License along with
+# GNU Mailman.  If not, see <http://www.gnu.org/licenses/>.
+
+"""Alembic migration environment."""
+
+from __future__ import absolute_import, print_function, unicode_literals
+
+__metaclass__ = type
+__all__ = [
+    'run_migrations_offline',
+    'run_migrations_online',
+    ]
+
+
+from alembic import context
+from alembic.config import Config
+from contextlib import closing
+from sqlalchemy import create_engine
+
+from mailman.config import config
+from mailman.database.model import Model
+from mailman.utilities.modules import expand_path
+from mailman.utilities.string import expand
+
+
+
+def run_migrations_offline():
+    """Run migrations in 'offline' mode.
+
+    This configures the context with just a URL and not an Engine,
+    though an Engine is acceptable here as well.  By skipping the Engine
+    creation we don't even need a DBAPI to be available.
+
+    Calls to context.execute() here emit the given string to the script
+    output.
+    """
+    url = expand(config.database.url, config.paths)
+    context.configure(url=url, target_metadata=Model.metadata)
+    with context.begin_transaction():
+        context.run_migrations()
+
+
+def run_migrations_online():
+    """Run migrations in 'online' mode.
+
+    In this scenario we need to create an Engine and associate a
+    connection with the context.
+    """
+    alembic_cfg = Config()
+    alembic_cfg.set_main_option(
+        'script_location', expand_path(config.database['alembic_scripts']))
+    url = expand(config.database.url, config.paths)
+    engine = create_engine(url)
+
+    connection = engine.connect()
+    with closing(connection):
+        context.configure(
+            connection=connection, target_metadata=Model.metadata)
+        with context.begin_transaction():
+            context.run_migrations()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()
diff --git a/src/mailman/database/alembic/script.py.mako b/src/mailman/database/alembic/script.py.mako
new file mode 100644
index 000000000..95702017e
--- /dev/null
+++ b/src/mailman/database/alembic/script.py.mako
@@ -0,0 +1,22 @@
+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision}
+Create Date: ${create_date}
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = ${repr(up_revision)}
+down_revision = ${repr(down_revision)}
+
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+def upgrade():
+    ${upgrades if upgrades else "pass"}
+
+
+def downgrade():
+    ${downgrades if downgrades else "pass"}
diff --git a/src/mailman/database/factory.py b/src/mailman/database/factory.py
index c06f75031..189fd6ac4 100644
--- a/src/mailman/database/factory.py
+++ b/src/mailman/database/factory.py
@@ -29,7 +29,11 @@ __all__ = [
 import os
 import types
 
+from alembic import command
+from alembic.config import Config
+
 from flufl.lock import Lock
+from pkg_resources import resource_filename
 from zope.interface import implementer
 from zope.interface.verify import verifyObject
 
@@ -53,6 +57,9 @@ class DatabaseFactory:
             verifyObject(IDatabase, database)
             database.initialize()
             Model.metadata.create_all(database.engine)
+            alembic_cfg = Config(
+                resource_filename('mailman.config', 'alembic.ini'))
+            command.stamp(alembic_cfg, 'head')
             database.commit()
             return database