Initial commit

rattail_tempmon/db/alembic/env.py

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+# -*- coding: utf-8 -*-
+"""
+Alembic Environment Script
+"""
+
+from __future__ import unicode_literals, absolute_import
+
+from alembic import context
+
+from rattail.config import make_config
+from rattail_tempmon.db import model as tempmon
+
+
+# this is the Alembic Config object, which provides
+# access to the values within the .ini file in use
+alembic_config = context.config
+
+# Use same config file for Rattail, as we are for Alembic.
+rattail_config = make_config(alembic_config.config_file_name)
+
+# add your model's MetaData object here
+# for 'autogenerate' support
+target_metadata = tempmon.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.
+
+    """
+    engine = rattail_config.tempmon_engine
+    context.configure(
+        url=engine.url,
+        target_metadata=target_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.
+
+    """
+    engine = rattail_config.tempmon_engine
+    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()