root / snf-pithos-backend / pithos / backends / migrate.py @ bc4f25c0
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# Copyright 2011-2012 GRNET S.A. All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or
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# without modification, are permitted provided that the following
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# conditions are met:
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#
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# 1. Redistributions of source code must retain the above
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# copyright notice, this list of conditions and the following
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# disclaimer.
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#
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# 2. Redistributions in binary form must reproduce the above
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# copyright notice, this list of conditions and the following
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# disclaimer in the documentation and/or other materials
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# provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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# USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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# AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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# ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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# The views and conclusions contained in the software and
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# documentation are those of the authors and should not be
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# interpreted as representing official policies, either expressed
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# or implied, of GRNET S.A.
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"""
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Alembic migration wrapper for pithos backend database.
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- Locate alembic.ini in backends/lib/sqlalchemy package and pass it
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as parameter to alembic
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e.g::
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$ pithos-migrate upgrade head
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"""
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import sys |
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import os |
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from alembic.config import main as alembic_main, Config |
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from alembic import context, command |
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from pithos.backends.lib import sqlalchemy as sqlalchemy_backend |
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from pithos.backends.lib.sqlalchemy import (node, groups, public, xfeatures, |
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quotaholder_serials) |
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os.environ['DJANGO_SETTINGS_MODULE'] = 'synnefo.settings' |
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try:
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# pithos-app case
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from synnefo.settings import PITHOS_BACKEND_DB_CONNECTION |
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except ImportError: |
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try:
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# plankton case
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from synnefo.settings import BACKEND_DB_CONNECTION as \ |
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PITHOS_BACKEND_DB_CONNECTION |
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except ImportError: |
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PITHOS_BACKEND_DB_CONNECTION = None
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import sqlalchemy as sa |
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DEFAULT_ALEMBIC_INI_PATH = os.path.join( |
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os.path.abspath(os.path.dirname(sqlalchemy_backend.__file__)), |
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'alembic.ini')
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def initialize_db(dbconnection): |
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alembic_cfg = Config(DEFAULT_ALEMBIC_INI_PATH) |
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db = alembic_cfg.get_main_option("sqlalchemy.url", dbconnection)
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alembic_cfg.set_main_option("sqlalchemy.url", db)
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engine = sa.engine_from_config( |
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alembic_cfg.get_section(alembic_cfg.config_ini_section), |
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prefix='sqlalchemy.')
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node.create_tables(engine) |
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groups.create_tables(engine) |
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public.create_tables(engine) |
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xfeatures.create_tables(engine) |
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quotaholder_serials.create_tables(engine) |
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# then, load the Alembic configuration and generate the
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# version table, "stamping" it with the most recent rev:
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command.stamp(alembic_cfg, "head")
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def main(argv=None, **kwargs): |
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if not argv: |
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argv = sys.argv |
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# clean up args
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argv.pop(0)
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if len(argv) >= 1 and argv[0] == 'initdb': |
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print "Initializing db." |
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initialize_db(PITHOS_BACKEND_DB_CONNECTION) |
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print "DB initialized." |
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exit(1) |
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# default config arg, if not already set
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if not '-c' in argv: |
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argv.insert(0, DEFAULT_ALEMBIC_INI_PATH)
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argv.insert(0, '-c') |
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alembic_main(argv, **kwargs) |
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if __name__ == '__main__': |
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import sys |
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main(sys.argv) |