1 files changed, 58 insertions, 0 deletions
diff --git a/fietsboek/alembic/env.py b/fietsboek/alembic/env.py
new file mode 100644
index 0000000..ae79f02
--- /dev/null
+++ b/fietsboek/alembic/env.py
@@ -0,0 +1,58 @@
+"""Pyramid bootstrap environment. """
+from alembic import context
+from pyramid.paster import get_appsettings, setup_logging
+from sqlalchemy import engine_from_config
+
+from fietsboek.models.meta import Base
+
+config = context.config
+
+setup_logging(config.config_file_name)
+
+settings = get_appsettings(config.config_file_name)
+target_metadata = Base.metadata
+
+
+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.
+
+    """
+    context.configure(url=settings['sqlalchemy.url'])
+    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.
+
+    """
+    engine = engine_from_config(settings, prefix='sqlalchemy.')
+
+    connection = engine.connect()
+    context.configure(
+        connection=connection,
+        target_metadata=target_metadata
+    )
+
+    try:
+        with context.begin_transaction():
+            context.run_migrations()
+    finally:
+        connection.close()
+
+
+if context.is_offline_mode():
+    run_migrations_offline()
+else:
+    run_migrations_online()