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authorChristopher Allan Webber <cwebber@dustycloud.org>2014-09-22 13:58:13 -0500
committerChristopher Allan Webber <cwebber@dustycloud.org>2014-09-22 13:58:13 -0500
commita6252cbf211691aa9d81fd535f5af7bcdbbd6620 (patch)
treeca1131ba7a8ff0437d392c20a70f17ee7470e3dd /mediagoblin/db/migrations/env.py
parentc47f402d7ee42e88ee1086351010dd598da6c0a5 (diff)
parent6430ae97eca57f4db4bcef54436df6c2abcd21ad (diff)
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Merge branch 'merge-python3-port'
Conflicts: setup.py
Diffstat (limited to 'mediagoblin/db/migrations/env.py')
-rw-r--r--mediagoblin/db/migrations/env.py71
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diff --git a/mediagoblin/db/migrations/env.py b/mediagoblin/db/migrations/env.py
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+from __future__ import with_statement
+from alembic import context
+from sqlalchemy import engine_from_config, pool
+from logging.config import fileConfig
+
+# this is the Alembic Config object, which provides
+# access to the values within the .ini file in use.
+config = context.config
+
+# Interpret the config file for Python logging.
+# This line sets up loggers basically.
+fileConfig(config.config_file_name)
+
+# add your model's MetaData object here
+# for 'autogenerate' support
+# from myapp import mymodel
+# target_metadata = mymodel.Base.metadata
+target_metadata = None
+
+# other values from the config, defined by the needs of env.py,
+# can be acquired:
+# my_important_option = config.get_main_option("my_important_option")
+# ... etc.
+
+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 = config.get_main_option("sqlalchemy.url")
+ context.configure(url=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 = engine_from_config(
+ config.get_section(config.config_ini_section),
+ prefix='sqlalchemy.',
+ poolclass=pool.NullPool)
+
+ 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()
+