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Don't run upgrades on an up to date database

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This commit is contained in:
Samuel Mehrbrodt 2014-07-17 23:04:58 +02:00
parent b2afbd688d
commit 2613ad3076
3 changed files with 32 additions and 48 deletions
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5
openlp/core/lib/db.py
View File

@ -96,9 +96,10 @@ def upgrade_db(url, upgrade):
mapper(Metadata, metadata_table)
version_meta = session.query(Metadata).get('version')
if version_meta is None:
version_meta = Metadata.populate(key='version', value='0')
# Tables have just been created - fill the version field with the most recent version
version = upgrade.__version__
version_meta = Metadata.populate(key='version', value=version)
session.add(version_meta)
version = 0
else:
version = int(version_meta.value)
if version > upgrade.__version__:

65
openlp/plugins/songs/lib/upgrade.py
View File

@ -33,7 +33,6 @@ backend for the Songs plugin
import logging
from sqlalchemy import Column, ForeignKey, types
from sqlalchemy.exc import OperationalError
from sqlalchemy.sql.expression import func, false, null, text
from openlp.core.lib.db import get_upgrade_op
@ -57,16 +56,13 @@ def upgrade_1(session, metadata):
:param session:
:param metadata:
"""
try:
op = get_upgrade_op(session)
op.drop_table('media_files_songs')
op.add_column('media_files', Column('song_id', types.Integer(), server_default=null()))
op.add_column('media_files', Column('weight', types.Integer(), server_default=text('0')))
if metadata.bind.url.get_dialect().name != 'sqlite':
# SQLite doesn't support ALTER TABLE ADD CONSTRAINT
op.create_foreign_key('fk_media_files_song_id', 'media_files', 'songs', ['song_id', 'id'])
except OperationalError:
log.info('Upgrade 1 has already been run')
op = get_upgrade_op(session)
op.drop_table('media_files_songs')
op.add_column('media_files', Column('song_id', types.Integer(), server_default=null()))
op.add_column('media_files', Column('weight', types.Integer(), server_default=text('0')))
if metadata.bind.url.get_dialect().name != 'sqlite':
# SQLite doesn't support ALTER TABLE ADD CONSTRAINT
op.create_foreign_key('fk_media_files_song_id', 'media_files', 'songs', ['song_id', 'id'])
def upgrade_2(session, metadata):
@ -75,12 +71,9 @@ def upgrade_2(session, metadata):
This upgrade adds a create_date and last_modified date to the songs table
"""
try:
op = get_upgrade_op(session)
op.add_column('songs', Column('create_date', types.DateTime(), default=func.now()))
op.add_column('songs', Column('last_modified', types.DateTime(), default=func.now()))
except OperationalError:
log.info('Upgrade 2 has already been run')
op = get_upgrade_op(session)
op.add_column('songs', Column('create_date', types.DateTime(), default=func.now()))
op.add_column('songs', Column('last_modified', types.DateTime(), default=func.now()))
def upgrade_3(session, metadata):
@ -89,14 +82,11 @@ def upgrade_3(session, metadata):
This upgrade adds a temporary song flag to the songs table
"""
try:
op = get_upgrade_op(session)
if metadata.bind.url.get_dialect().name == 'sqlite':
op.add_column('songs', Column('temporary', types.Boolean(create_constraint=False), server_default=false()))
else:
op.add_column('songs', Column('temporary', types.Boolean(), server_default=false()))
except OperationalError:
log.info('Upgrade 3 has already been run')
op = get_upgrade_op(session)
if metadata.bind.url.get_dialect().name == 'sqlite':
op.add_column('songs', Column('temporary', types.Boolean(create_constraint=False), server_default=false()))
else:
op.add_column('songs', Column('temporary', types.Boolean(), server_default=false()))
def upgrade_4(session, metadata):
@ -105,17 +95,14 @@ def upgrade_4(session, metadata):
This upgrade adds a column for author type to the authors_songs table
"""
try:
# Since SQLite doesn't support changing the primary key of a table, we need to recreate the table
# and copy the old values
op = get_upgrade_op(session)
op.create_table('authors_songs_tmp',
Column('author_id', types.Integer(), ForeignKey('authors.id'), primary_key=True),
Column('song_id', types.Integer(), ForeignKey('songs.id'), primary_key=True),
Column('author_type', types.String(), primary_key=True,
nullable=False, server_default=text('""')))
op.execute('INSERT INTO authors_songs_tmp SELECT author_id, song_id, "" FROM authors_songs')
op.drop_table('authors_songs')
op.rename_table('authors_songs_tmp', 'authors_songs')
except OperationalError:
log.info('Upgrade 4 has already been run')
# Since SQLite doesn't support changing the primary key of a table, we need to recreate the table
# and copy the old values
op = get_upgrade_op(session)
op.create_table('authors_songs_tmp',
Column('author_id', types.Integer(), ForeignKey('authors.id'), primary_key=True),
Column('song_id', types.Integer(), ForeignKey('songs.id'), primary_key=True),
Column('author_type', types.String(), primary_key=True,
nullable=False, server_default=text('""')))
op.execute('INSERT INTO authors_songs_tmp SELECT author_id, song_id, "" FROM authors_songs')
op.drop_table('authors_songs')
op.rename_table('authors_songs_tmp', 'authors_songs')

10
openlp/plugins/songusage/lib/upgrade.py
View File

@ -32,7 +32,6 @@ backend for the SongsUsage plugin
"""
import logging
from sqlalchemy.exc import OperationalError
from sqlalchemy import Column, types
from openlp.core.lib.db import get_upgrade_op
@ -50,9 +49,6 @@ def upgrade_1(session, metadata):
:param session: SQLAlchemy Session object
:param metadata: SQLAlchemy MetaData object
"""
try:
op = get_upgrade_op(session)
op.add_column('songusage_data', Column('plugin_name', types.Unicode(20), server_default=''))
op.add_column('songusage_data', Column('source', types.Unicode(10), server_default=''))
except OperationalError:
log.info('Upgrade 1 has already taken place')
op = get_upgrade_op(session)
op.add_column('songusage_data', Column('plugin_name', types.Unicode(20), server_default=''))
op.add_column('songusage_data', Column('source', types.Unicode(10), server_default=''))