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author | Cédric Bonhomme <cedric@cedricbonhomme.org> | 2015-02-18 21:39:28 +0100 |
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committer | Cédric Bonhomme <cedric@cedricbonhomme.org> | 2015-02-18 21:39:28 +0100 |
commit | 045bb9edc5f8b4a1c130811cc39f19417904beed (patch) | |
tree | 85132a63b0ae8c48d9743d64dca0c87858077abe /alembic/env.py | |
parent | Updated README. (diff) | |
download | newspipe-045bb9edc5f8b4a1c130811cc39f19417904beed.tar.gz newspipe-045bb9edc5f8b4a1c130811cc39f19417904beed.tar.bz2 newspipe-045bb9edc5f8b4a1c130811cc39f19417904beed.zip |
Alembic is magic!
Diffstat (limited to 'alembic/env.py')
-rw-r--r-- | alembic/env.py | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/alembic/env.py b/alembic/env.py new file mode 100644 index 00000000..fccd445a --- /dev/null +++ b/alembic/env.py @@ -0,0 +1,72 @@ +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() |