Alembic

-------

Kallithea incorporates an [Alembic](http://alembic.zzzcomputing.com/en/latest/)

"migration environment" in `kallithea/alembic`, portions of which is:

Copyright © 2009-2016 by Michael Bayer.

Alembic is a trademark of Michael Bayer.

and licensed under the MIT-permissive license, which is

[included in this distribution](MIT-Permissive-License.txt).

recursive-include kallithea/alembic *

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, literal_binds=True)

    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.

    """

    connectable = engine_from_config(

        config.get_section(config.config_ini_section),

        prefix='sqlalchemy.',

        poolclass=pool.NullPool)

    with connectable.connect() as connection:

        context.configure(

            connection=connection,

            target_metadata=target_metadata

        )

        with context.begin_transaction():

            context.run_migrations()

if context.is_offline_mode():

    run_migrations_offline()

else:

    run_migrations_online()

"""${message}

Revision ID: ${up_revision}

Revises: ${down_revision | comma,n}

Create Date: ${create_date}

"""

# revision identifiers, used by Alembic.

revision = ${repr(up_revision)}

down_revision = ${repr(down_revision)}

branch_labels = ${repr(branch_labels)}

depends_on = ${repr(depends_on)}

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"}

    "alembic>=0.8.0,<0.9",