# 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 .
import datetime
import uuid
from sqlalchemy import (MetaData, Table, Column, Boolean, SmallInteger,
Integer, Unicode, UnicodeText, DateTime,
ForeignKey)
from sqlalchemy.exc import ProgrammingError
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.sql import and_
from migrate.changeset.constraint import UniqueConstraint
from mediagoblin.db.extratypes import JSONEncoded
from mediagoblin.db.migration_tools import RegisterMigration, inspect_table
from mediagoblin.db.models import MediaEntry, Collection, User, MediaComment
MIGRATIONS = {}
@RegisterMigration(1, MIGRATIONS)
def ogg_to_webm_audio(db_conn):
metadata = MetaData(bind=db_conn.bind)
file_keynames = Table('core__file_keynames', metadata, autoload=True,
autoload_with=db_conn.bind)
db_conn.execute(
file_keynames.update().where(file_keynames.c.name == 'ogg').
values(name='webm_audio')
)
db_conn.commit()
@RegisterMigration(2, MIGRATIONS)
def add_wants_notification_column(db_conn):
metadata = MetaData(bind=db_conn.bind)
users = Table('core__users', metadata, autoload=True,
autoload_with=db_conn.bind)
col = Column('wants_comment_notification', Boolean,
default=True, nullable=True)
col.create(users, populate_defaults=True)
db_conn.commit()
@RegisterMigration(3, MIGRATIONS)
def add_transcoding_progress(db_conn):
metadata = MetaData(bind=db_conn.bind)
media_entry = inspect_table(metadata, 'core__media_entries')
col = Column('transcoding_progress', SmallInteger)
col.create(media_entry)
db_conn.commit()
class Collection_v0(declarative_base()):
__tablename__ = "core__collections"
id = Column(Integer, primary_key=True)
title = Column(Unicode, nullable=False)
slug = Column(Unicode)
created = Column(DateTime, nullable=False, default=datetime.datetime.now,
index=True)
description = Column(UnicodeText)
creator = Column(Integer, ForeignKey(User.id), nullable=False)
items = Column(Integer, default=0)
class CollectionItem_v0(declarative_base()):
__tablename__ = "core__collection_items"
id = Column(Integer, primary_key=True)
media_entry = Column(
Integer, ForeignKey(MediaEntry.id), nullable=False, index=True)
collection = Column(Integer, ForeignKey(Collection.id), nullable=False)
note = Column(UnicodeText, nullable=True)
added = Column(DateTime, nullable=False, default=datetime.datetime.now)
position = Column(Integer)
## This should be activated, normally.
## But this would change the way the next migration used to work.
## So it's commented for now.
__table_args__ = (
UniqueConstraint('collection', 'media_entry'),
{})
collectionitem_unique_constraint_done = False
@RegisterMigration(4, MIGRATIONS)
def add_collection_tables(db_conn):
Collection_v0.__table__.create(db_conn.bind)
CollectionItem_v0.__table__.create(db_conn.bind)
global collectionitem_unique_constraint_done
collectionitem_unique_constraint_done = True
db_conn.commit()
@RegisterMigration(5, MIGRATIONS)
def add_mediaentry_collected(db_conn):
metadata = MetaData(bind=db_conn.bind)
media_entry = inspect_table(metadata, 'core__media_entries')
col = Column('collected', Integer, default=0)
col.create(media_entry)
db_conn.commit()
class ProcessingMetaData_v0(declarative_base()):
__tablename__ = 'core__processing_metadata'
id = Column(Integer, primary_key=True)
media_entry_id = Column(Integer, ForeignKey(MediaEntry.id), nullable=False,
index=True)
callback_url = Column(Unicode)
@RegisterMigration(6, MIGRATIONS)
def create_processing_metadata_table(db):
ProcessingMetaData_v0.__table__.create(db.bind)
db.commit()
# Okay, problem being:
# Migration #4 forgot to add the uniqueconstraint for the
# new tables. While creating the tables from scratch had
# the constraint enabled.
#
# So we have four situations that should end up at the same
# db layout:
#
# 1. Fresh install.
# Well, easy. Just uses the tables in models.py
# 2. Fresh install using a git version just before this migration
# The tables are all there, the unique constraint is also there.
# This migration should do nothing.
# But as we can't detect the uniqueconstraint easily,
# this migration just adds the constraint again.
# And possibly fails very loud. But ignores the failure.
# 3. old install, not using git, just releases.
# This one will get the new tables in #4 (now with constraint!)
# And this migration is just skipped silently.
# 4. old install, always on latest git.
# This one has the tables, but lacks the constraint.
# So this migration adds the constraint.
@RegisterMigration(7, MIGRATIONS)
def fix_CollectionItem_v0_constraint(db_conn):
"""Add the forgotten Constraint on CollectionItem"""
global collectionitem_unique_constraint_done
if collectionitem_unique_constraint_done:
# Reset it. Maybe the whole thing gets run again
# For a different db?
collectionitem_unique_constraint_done = False
return
metadata = MetaData(bind=db_conn.bind)
CollectionItem_table = inspect_table(metadata, 'core__collection_items')
constraint = UniqueConstraint('collection', 'media_entry',
name='core__collection_items_collection_media_entry_key',
table=CollectionItem_table)
try:
constraint.create()
except ProgrammingError:
# User probably has an install that was run since the
# collection tables were added, so we don't need to run this migration.
pass
db_conn.commit()
@RegisterMigration(8, MIGRATIONS)
def add_license_preference(db):
metadata = MetaData(bind=db.bind)
user_table = inspect_table(metadata, 'core__users')
col = Column('license_preference', Unicode)
col.create(user_table)
db.commit()
@RegisterMigration(9, MIGRATIONS)
def mediaentry_new_slug_era(db):
"""
Update for the new era for media type slugs.
Entries without slugs now display differently in the url like:
/u/cwebber/m/id=251/
... because of this, we should back-convert:
- entries without slugs should be converted to use the id, if possible, to
make old urls still work
- slugs with = (or also : which is now also not allowed) to have those
stripped out (small possibility of breakage here sadly)
"""
def slug_and_user_combo_exists(slug, uploader):
return db.execute(
media_table.select(
and_(media_table.c.uploader==uploader,
media_table.c.slug==slug))).first() is not None
def append_garbage_till_unique(row, new_slug):
"""
Attach junk to this row until it's unique, then save it
"""
if slug_and_user_combo_exists(new_slug, row.uploader):
# okay, still no success;
# let's whack junk on there till it's unique.
new_slug += '-' + uuid.uuid4().hex[:4]
# keep going if necessary!
while slug_and_user_combo_exists(new_slug, row.uploader):
new_slug += uuid.uuid4().hex[:4]
db.execute(
media_table.update(). \
where(media_table.c.id==row.id). \
values(slug=new_slug))
metadata = MetaData(bind=db.bind)
media_table = inspect_table(metadata, 'core__media_entries')
for row in db.execute(media_table.select()):
# no slug, try setting to an id
if not row.slug:
append_garbage_till_unique(row, unicode(row.id))
# has "=" or ":" in it... we're getting rid of those
elif u"=" in row.slug or u":" in row.slug:
append_garbage_till_unique(
row, row.slug.replace(u"=", u"-").replace(u":", u"-"))
db.commit()
@RegisterMigration(10, MIGRATIONS)
def unique_collections_slug(db):
"""Add unique constraint to collection slug"""
metadata = MetaData(bind=db.bind)
collection_table = inspect_table(metadata, "core__collections")
existing_slugs = {}
slugs_to_change = []
for row in db.execute(collection_table.select()):
# if duplicate slug, generate a unique slug
if row.creator in existing_slugs and row.slug in \
existing_slugs[row.creator]:
slugs_to_change.append(row.id)
else:
if not row.creator in existing_slugs:
existing_slugs[row.creator] = [row.slug]
else:
existing_slugs[row.creator].append(row.slug)
for row_id in slugs_to_change:
new_slug = unicode(uuid.uuid4())
db.execute(collection_table.update().
where(collection_table.c.id == row_id).
values(slug=new_slug))
# sqlite does not like to change the schema when a transaction(update) is
# not yet completed
db.commit()
constraint = UniqueConstraint('creator', 'slug',
name='core__collection_creator_slug_key',
table=collection_table)
constraint.create()
db.commit()
@RegisterMigration(11, MIGRATIONS)
def drop_token_related_User_columns(db):
"""
Drop unneeded columns from the User table after switching to using
itsdangerous tokens for email and forgot password verification.
"""
metadata = MetaData(bind=db.bind)
user_table = inspect_table(metadata, 'core__users')
verification_key = user_table.columns['verification_key']
fp_verification_key = user_table.columns['fp_verification_key']
fp_token_expire = user_table.columns['fp_token_expire']
verification_key.drop()
fp_verification_key.drop()
fp_token_expire.drop()
db.commit()
class CommentSubscription_v0(declarative_base()):
__tablename__ = 'core__comment_subscriptions'
id = Column(Integer, primary_key=True)
created = Column(DateTime, nullable=False, default=datetime.datetime.now)
media_entry_id = Column(Integer, ForeignKey(MediaEntry.id), nullable=False)
user_id = Column(Integer, ForeignKey(User.id), nullable=False)
notify = Column(Boolean, nullable=False, default=True)
send_email = Column(Boolean, nullable=False, default=True)
class Notification_v0(declarative_base()):
__tablename__ = 'core__notifications'
id = Column(Integer, primary_key=True)
type = Column(Unicode)
created = Column(DateTime, nullable=False, default=datetime.datetime.now)
user_id = Column(Integer, ForeignKey(User.id), nullable=False,
index=True)
seen = Column(Boolean, default=lambda: False, index=True)
class CommentNotification_v0(Notification_v0):
__tablename__ = 'core__comment_notifications'
id = Column(Integer, ForeignKey(Notification_v0.id), primary_key=True)
subject_id = Column(Integer, ForeignKey(MediaComment.id))
class ProcessingNotification_v0(Notification_v0):
__tablename__ = 'core__processing_notifications'
id = Column(Integer, ForeignKey(Notification_v0.id), primary_key=True)
subject_id = Column(Integer, ForeignKey(MediaEntry.id))
@RegisterMigration(12, MIGRATIONS)
def add_new_notification_tables(db):
metadata = MetaData(bind=db.bind)
user_table = inspect_table(metadata, 'core__users')
mediaentry_table = inspect_table(metadata, 'core__media_entries')
mediacomment_table = inspect_table(metadata, 'core__media_comments')
CommentSubscription_v0.__table__.create(db.bind)
Notification_v0.__table__.create(db.bind)
CommentNotification_v0.__table__.create(db.bind)
ProcessingNotification_v0.__table__.create(db.bind)
@RegisterMigration(13, MIGRATIONS)
def pw_hash_nullable(db):
"""Make pw_hash column nullable"""
metadata = MetaData(bind=db.bind)
user_table = inspect_table(metadata, "core__users")
user_table.c.pw_hash.alter(nullable=True)
# sqlite+sqlalchemy seems to drop this constraint during the
# migration, so we add it back here for now a bit manually.
if db.bind.url.drivername == 'sqlite':
constraint = UniqueConstraint('username', table=user_table)
constraint.create()
db.commit()
# oauth1 migrations
class Client_v0(declarative_base()):
"""
Model representing a client - Used for API Auth
"""
__tablename__ = "core__clients"
id = Column(Unicode, nullable=True, primary_key=True)
secret = Column(Unicode, nullable=False)
expirey = Column(DateTime, nullable=True)
application_type = Column(Unicode, nullable=False)
created = Column(DateTime, nullable=False, default=datetime.datetime.now)
updated = Column(DateTime, nullable=False, default=datetime.datetime.now)
# optional stuff
redirect_uri = Column(JSONEncoded, nullable=True)
logo_url = Column(Unicode, nullable=True)
application_name = Column(Unicode, nullable=True)
contacts = Column(JSONEncoded, nullable=True)
def __repr__(self):
if self.application_name:
return "".format(self.application_name, self.id)
else:
return "".format(self.id)
class RequestToken_v0(declarative_base()):
"""
Model for representing the request tokens
"""
__tablename__ = "core__request_tokens"
token = Column(Unicode, primary_key=True)
secret = Column(Unicode, nullable=False)
client = Column(Unicode, ForeignKey(Client_v0.id))
user = Column(Integer, ForeignKey(User.id), nullable=True)
used = Column(Boolean, default=False)
authenticated = Column(Boolean, default=False)
verifier = Column(Unicode, nullable=True)
callback = Column(Unicode, nullable=False, default=u"oob")
created = Column(DateTime, nullable=False, default=datetime.datetime.now)
updated = Column(DateTime, nullable=False, default=datetime.datetime.now)
class AccessToken_v0(declarative_base()):
"""
Model for representing the access tokens
"""
__tablename__ = "core__access_tokens"
token = Column(Unicode, nullable=False, primary_key=True)
secret = Column(Unicode, nullable=False)
user = Column(Integer, ForeignKey(User.id))
request_token = Column(Unicode, ForeignKey(RequestToken_v0.token))
created = Column(DateTime, nullable=False, default=datetime.datetime.now)
updated = Column(DateTime, nullable=False, default=datetime.datetime.now)
class NonceTimestamp_v0(declarative_base()):
"""
A place the timestamp and nonce can be stored - this is for OAuth1
"""
__tablename__ = "core__nonce_timestamps"
nonce = Column(Unicode, nullable=False, primary_key=True)
timestamp = Column(DateTime, nullable=False, primary_key=True)
@RegisterMigration(14, MIGRATIONS)
def create_oauth1_tables(db):
""" Creates the OAuth1 tables """
Client_v0.__table__.create(db.bind)
RequestToken_v0.__table__.create(db.bind)
AccessToken_v0.__table__.create(db.bind)
NonceTimestamp_v0.__table__.create(db.bind)
db.commit()