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# GNU MediaGoblin -- federated, autonomous media hosting
# Copyright (C) 2011, 2012 MediaGoblin contributors. See AUTHORS.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from mediagoblin.db.mongo.util import RegisterMigration
from mediagoblin.tools.text import cleaned_markdown_conversion
def add_table_field(db, table_name, field_name, default_value):
"""
Add a new field to the table/collection named table_name.
The field will have the name field_name and the value default_value
"""
db[table_name].update(
{field_name: {'$exists': False}},
{'$set': {field_name: default_value}},
multi=True)
def drop_table_field(db, table_name, field_name):
"""
Drop an old field from a table/collection
"""
db[table_name].update(
{field_name: {'$exists': True}},
{'$unset': {field_name: 1}},
multi=True)
# Please see mediagoblin/tests/test_migrations.py for some examples of
# basic migrations.
@RegisterMigration(1)
def user_add_bio_html(database):
"""
Users now have richtext bios via Markdown, reflect appropriately.
"""
collection = database['users']
target = collection.find(
{'bio_html': {'$exists': False}})
for document in target:
document['bio_html'] = cleaned_markdown_conversion(
document['bio'])
collection.save(document)
@RegisterMigration(2)
def mediaentry_mediafiles_main_to_original(database):
"""
Rename "main" media file to "original".
"""
collection = database['media_entries']
target = collection.find(
{'media_files.main': {'$exists': True}})
for document in target:
original = document['media_files'].pop('main')
document['media_files']['original'] = original
collection.save(document)
@RegisterMigration(3)
def mediaentry_remove_thumbnail_file(database):
"""
Use media_files['thumb'] instead of media_entries['thumbnail_file']
"""
database['media_entries'].update(
{'thumbnail_file': {'$exists': True}},
{'$unset': {'thumbnail_file': 1}},
multi=True)
@RegisterMigration(4)
def mediaentry_add_queued_task_id(database):
"""
Add the 'queued_task_id' field for entries that don't have it.
"""
add_table_field(database, 'media_entries', 'queued_task_id', None)
@RegisterMigration(5)
def mediaentry_add_fail_error_and_metadata(database):
"""
Add 'fail_error' and 'fail_metadata' fields to media entries
"""
add_table_field(database, 'media_entries', 'fail_error', None)
add_table_field(database, 'media_entries', 'fail_metadata', {})
@RegisterMigration(6)
def user_add_forgot_password_token_and_expires(database):
"""
Add token and expiration fields to help recover forgotten passwords
"""
add_table_field(database, 'users', 'fp_verification_key', None)
add_table_field(database, 'users', 'fp_token_expire', None)
@RegisterMigration(7)
def media_type_image_to_multimedia_type_image(database):
database['media_entries'].update(
{'media_type': 'image'},
{'$set': {'media_type': 'mediagoblin.media_types.image'}},
multi=True)
@RegisterMigration(8)
def mediaentry_add_license(database):
"""
Add the 'license' field for entries that don't have it.
"""
add_table_field(database, 'media_entries', 'license', None)
@RegisterMigration(9)
def remove_calculated_html(database):
"""
Drop pre-rendered html again and calculate things
on the fly (and cache):
- User.bio_html
- MediaEntry.description_html
- MediaComment.content_html
"""
drop_table_field(database, 'users', 'bio_html')
drop_table_field(database, 'media_entries', 'description_html')
drop_table_field(database, 'media_comments', 'content_html')
@RegisterMigration(10)
def convert_video_media_data(database):
"""
Move media_data["video"] directly into media_data
"""
collection = database['media_entries']
target = collection.find(
{'media_data.video': {'$exists': True}})
for document in target:
assert len(document['media_data']) == 1
document['media_data'] = document['media_data']['video']
collection.save(document)
@RegisterMigration(11)
def convert_gps_media_data(database):
"""
Move media_data["gps"]["*"] to media_data["gps_*"].
In preparation for media_data.gps_*
"""
collection = database['media_entries']
target = collection.find(
{'media_data.gps': {'$exists': True}})
for document in target:
for key, value in document['media_data']['gps'].iteritems():
document['media_data']['gps_' + key] = value
del document['media_data']['gps']
collection.save(document)
@RegisterMigration(12)
def convert_exif_media_data(database):
"""
Move media_data["exif"]["clean"] to media_data["exif_all"].
Drop media_data["exif"]["useful"]
In preparation for media_data.exif_all
"""
collection = database['media_entries']
target = collection.find(
{'media_data.exif.clean': {'$exists': True}})
for document in target:
media_data = document['media_data']
exif_all = media_data['exif'].pop('clean')
if len(exif_all):
media_data['exif_all'] = exif_all
del media_data['exif']['useful']
assert len(media_data['exif']) == 0
del media_data['exif']
collection.save(document)
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