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Rewrite site-specific database models into declarative bases

This allows us to easily extend the bases into Nyaa and Sukebei models, with working FKs and relationships.

Note: the schema will (should!) otherwise match, however; the following index on Torrent was renamed:
uploader_flag_idx will be <prefix>_uploader_flag_idx, as we will be always creating both flavors.
The index rename should not affect SQA, but will potentially break migrations.
This commit is contained in:
TheAMM 2017-05-27 17:33:48 +03:00
parent b6ecad898d
commit 07cf0de6f9

View file

@ -3,10 +3,13 @@ from enum import Enum, IntEnum
from datetime import datetime, timezone
from nyaa import app, db
from nyaa.torrents import create_magnet
from sqlalchemy import func, ForeignKeyConstraint, Index
from sqlalchemy.ext import declarative
from sqlalchemy_utils import ChoiceType, EmailType, PasswordType
from werkzeug.security import generate_password_hash, check_password_hash
from sqlalchemy_fulltext import FullText
from werkzeug.security import generate_password_hash, check_password_hash
from ipaddress import ip_address
import re
@ -36,6 +39,31 @@ else:
UTC_EPOCH = datetime.utcfromtimestamp(0)
class DeclarativeHelperBase(object):
''' This class eases our nyaa-sukebei shenanigans by automatically adjusting
__tablename__ and providing class methods for renaming references. '''
# See http://docs.sqlalchemy.org/en/latest/orm/extensions/declarative/api.html
__tablename_base__ = None
__flavor__ = None
@classmethod
def _table_prefix_string(cls):
return cls.__flavor__.lower() + '_'
@classmethod
def _table_prefix(cls, table_name):
return cls._table_prefix_string() + table_name
@classmethod
def _flavor_prefix(cls, table_name):
return cls.__flavor__ + table_name
@declarative.declared_attr
def __tablename__(cls):
return cls._table_prefix(cls.__tablename_base__)
class TorrentFlags(IntEnum):
NONE = 0
ANONYMOUS = 1
@ -46,16 +74,13 @@ class TorrentFlags(IntEnum):
DELETED = 32
DB_TABLE_PREFIX = app.config['TABLE_PREFIX']
class Torrent(db.Model):
__tablename__ = DB_TABLE_PREFIX + 'torrents'
class TorrentBase(DeclarativeHelperBase):
__tablename_base__ = 'torrents'
id = db.Column(db.Integer, primary_key=True)
info_hash = db.Column(BinaryType(length=20), unique=True, nullable=False, index=True)
display_name = db.Column(
db.String(length=255, collation=COL_UTF8_GENERAL_CI), nullable=False, index=True)
display_name = db.Column(db.String(length=255, collation=COL_UTF8_GENERAL_CI),
nullable=False, index=True)
torrent_name = db.Column(db.String(length=255), nullable=False)
information = db.Column(db.String(length=255), nullable=False)
description = db.Column(DescriptionTextType(collation=COL_UTF8MB4_BIN), nullable=False)
@ -63,45 +88,84 @@ class Torrent(db.Model):
filesize = db.Column(db.BIGINT, default=0, nullable=False, index=True)
encoding = db.Column(db.String(length=32), nullable=False)
flags = db.Column(db.Integer, default=0, nullable=False, index=True)
uploader_id = db.Column(db.Integer, db.ForeignKey('users.id'), nullable=True)
@declarative.declared_attr
def uploader_id(cls):
# Even though this is same for both tables, declarative requires this
return db.Column(db.Integer, db.ForeignKey('users.id'), nullable=True)
uploader_ip = db.Column(db.Binary(length=16), default=None, nullable=True)
has_torrent = db.Column(db.Boolean, nullable=False, default=False)
created_time = db.Column(db.DateTime(timezone=False), default=datetime.utcnow, nullable=False)
updated_time = db.Column(db.DateTime(timezone=False),
default=datetime.utcnow, onupdate=datetime.utcnow, nullable=False)
updated_time = db.Column(db.DateTime(timezone=False), default=datetime.utcnow,
onupdate=datetime.utcnow, nullable=False)
@declarative.declared_attr
def main_category_id(cls):
fk = db.ForeignKey(cls._table_prefix('main_categories.id'))
return db.Column(db.Integer, fk, nullable=False)
main_category_id = db.Column(db.Integer, db.ForeignKey(
DB_TABLE_PREFIX + 'main_categories.id'), nullable=False)
sub_category_id = db.Column(db.Integer, nullable=False)
redirect = db.Column(db.Integer, db.ForeignKey(
DB_TABLE_PREFIX + 'torrents.id'), nullable=True)
__table_args__ = (
Index('uploader_flag_idx', 'uploader_id', 'flags'),
ForeignKeyConstraint(
['main_category_id', 'sub_category_id'],
[DB_TABLE_PREFIX + 'sub_categories.main_category_id',
DB_TABLE_PREFIX + 'sub_categories.id']
), {}
)
@declarative.declared_attr
def redirect(cls):
fk = db.ForeignKey(cls._table_prefix('torrents.id'))
return db.Column(db.Integer, fk, nullable=True)
user = db.relationship('User', uselist=False, back_populates='torrents')
main_category = db.relationship('MainCategory', uselist=False,
back_populates='torrents', lazy="joined")
sub_category = db.relationship('SubCategory', uselist=False, backref='torrents', lazy="joined",
primaryjoin=(
"and_(SubCategory.id == foreign(Torrent.sub_category_id), "
"SubCategory.main_category_id == Torrent.main_category_id)"))
info = db.relationship('TorrentInfo', uselist=False,
cascade="all, delete-orphan", back_populates='torrent')
filelist = db.relationship('TorrentFilelist', uselist=False,
@declarative.declared_attr
def __table_args__(cls):
return (
Index(cls._table_prefix('uploader_flag_idx'), 'uploader_id', 'flags'),
ForeignKeyConstraint(
['main_category_id', 'sub_category_id'],
[cls._table_prefix('sub_categories.main_category_id'),
cls._table_prefix('sub_categories.id')]
), {}
)
@declarative.declared_attr
def user(cls):
return db.relationship('User', uselist=False, back_populates=cls._table_prefix('torrents'))
@declarative.declared_attr
def main_category(cls):
return db.relationship(cls._flavor_prefix('MainCategory'), uselist=False,
back_populates='torrents', lazy="joined")
@declarative.declared_attr
def sub_category(cls):
join_sql = ("and_({0}SubCategory.id == foreign({0}Torrent.sub_category_id), "
"{0}SubCategory.main_category_id == {0}Torrent.main_category_id)")
return db.relationship(cls._flavor_prefix('SubCategory'), uselist=False,
backref='torrents', lazy="joined",
primaryjoin=join_sql.format(cls.__flavor__))
@declarative.declared_attr
def info(cls):
return db.relationship(cls._flavor_prefix('TorrentInfo'), uselist=False,
cascade="all, delete-orphan", back_populates='torrent')
stats = db.relationship('Statistic', uselist=False,
cascade="all, delete-orphan", back_populates='torrent', lazy='joined')
trackers = db.relationship('TorrentTrackers', uselist=True, cascade="all, delete-orphan",
lazy='joined', order_by='TorrentTrackers.order')
comments = db.relationship('Comment', uselist=True,
@declarative.declared_attr
def filelist(cls):
return db.relationship(cls._flavor_prefix('TorrentFilelist'), uselist=False,
cascade="all, delete-orphan", back_populates='torrent')
@declarative.declared_attr
def stats(cls):
return db.relationship(cls._flavor_prefix('Statistic'), uselist=False,
cascade="all, delete-orphan", back_populates='torrent',
lazy='joined')
@declarative.declared_attr
def trackers(cls):
return db.relationship(cls._flavor_prefix('TorrentTrackers'), uselist=True,
cascade="all, delete-orphan", lazy='joined',
order_by=cls._flavor_prefix('TorrentTrackers.order'))
@declarative.declared_attr
def comments(cls):
return db.relationship(cls._flavor_prefix('Comment'), uselist=True,
cascade="all, delete-orphan")
def __repr__(self):
@ -211,44 +275,57 @@ class Torrent(db.Model):
return cls.by_info_hash(info_hash_bytes)
class TorrentNameSearch(FullText, Torrent):
__fulltext_columns__ = ('display_name',)
class TorrentFilelistBase(DeclarativeHelperBase):
__tablename_base__ = 'torrents_filelist'
class TorrentFilelist(db.Model):
__tablename__ = DB_TABLE_PREFIX + 'torrents_filelist'
__table_args__ = {'mysql_row_format': 'COMPRESSED'}
torrent_id = db.Column(db.Integer, db.ForeignKey(
DB_TABLE_PREFIX + 'torrents.id', ondelete="CASCADE"), primary_key=True)
@declarative.declared_attr
def torrent_id(cls):
fk = db.ForeignKey(cls._table_prefix('torrents.id'), ondelete="CASCADE")
return db.Column(db.Integer, fk, primary_key=True)
filelist_blob = db.Column(MediumBlobType, nullable=True)
torrent = db.relationship('Torrent', uselist=False, back_populates='filelist')
@declarative.declared_attr
def torrent(cls):
return db.relationship(cls._flavor_prefix('Torrent'), uselist=False,
back_populates='filelist')
class TorrentInfo(db.Model):
__tablename__ = DB_TABLE_PREFIX + 'torrents_info'
class TorrentInfoBase(DeclarativeHelperBase):
__tablename_base__ = 'torrents_info'
__table_args__ = {'mysql_row_format': 'COMPRESSED'}
torrent_id = db.Column(db.Integer, db.ForeignKey(
DB_TABLE_PREFIX + 'torrents.id', ondelete="CASCADE"), primary_key=True)
@declarative.declared_attr
def torrent_id(cls):
return db.Column(db.Integer, db.ForeignKey(
cls._table_prefix('torrents.id'), ondelete="CASCADE"), primary_key=True)
info_dict = db.Column(MediumBlobType, nullable=True)
torrent = db.relationship('Torrent', uselist=False, back_populates='info')
@declarative.declared_attr
def torrent(cls):
return db.relationship(cls._flavor_prefix('Torrent'), uselist=False, back_populates='info')
class Statistic(db.Model):
__tablename__ = DB_TABLE_PREFIX + 'statistics'
class StatisticBase(DeclarativeHelperBase):
__tablename_base__ = 'statistics'
torrent_id = db.Column(db.Integer, db.ForeignKey(
DB_TABLE_PREFIX + 'torrents.id', ondelete="CASCADE"), primary_key=True)
@declarative.declared_attr
def torrent_id(cls):
fk = db.ForeignKey(cls._table_prefix('torrents.id'), ondelete="CASCADE")
return db.Column(db.Integer, fk, primary_key=True)
seed_count = db.Column(db.Integer, default=0, nullable=False, index=True)
leech_count = db.Column(db.Integer, default=0, nullable=False, index=True)
download_count = db.Column(db.Integer, default=0, nullable=False, index=True)
last_updated = db.Column(db.DateTime(timezone=False))
torrent = db.relationship('Torrent', uselist=False, back_populates='stats')
@declarative.declared_attr
def torrent(cls):
return db.relationship(cls._flavor_prefix('Torrent'), uselist=False,
back_populates='stats')
class Trackers(db.Model):
@ -264,30 +341,43 @@ class Trackers(db.Model):
return cls.query.filter_by(uri=uri).first()
class TorrentTrackers(db.Model):
__tablename__ = DB_TABLE_PREFIX + 'torrent_trackers'
class TorrentTrackersBase(DeclarativeHelperBase):
__tablename_base__ = 'torrent_trackers'
@declarative.declared_attr
def torrent_id(cls):
fk = db.ForeignKey(cls._table_prefix('torrents.id'), ondelete="CASCADE")
return db.Column(db.Integer, fk, primary_key=True)
@declarative.declared_attr
def tracker_id(cls):
fk = db.ForeignKey('trackers.id', ondelete="CASCADE")
return db.Column(db.Integer, fk, primary_key=True)
torrent_id = db.Column(db.Integer, db.ForeignKey(
DB_TABLE_PREFIX + 'torrents.id', ondelete="CASCADE"), primary_key=True)
tracker_id = db.Column(db.Integer, db.ForeignKey(
'trackers.id', ondelete="CASCADE"), primary_key=True)
order = db.Column(db.Integer, nullable=False, index=True)
tracker = db.relationship('Trackers', uselist=False, lazy='joined')
@declarative.declared_attr
def tracker(cls):
return db.relationship('Trackers', uselist=False, lazy='joined')
@classmethod
def by_torrent_id(cls, torrent_id):
return cls.query.filter_by(torrent_id=torrent_id).order_by(cls.order.desc())
class MainCategory(db.Model):
__tablename__ = DB_TABLE_PREFIX + 'main_categories'
class MainCategoryBase(DeclarativeHelperBase):
__tablename_base__ = 'main_categories'
id = db.Column(db.Integer, primary_key=True)
name = db.Column(db.String(length=64), nullable=False)
sub_categories = db.relationship('SubCategory', back_populates='main_category')
torrents = db.relationship('Torrent', back_populates='main_category')
@declarative.declared_attr
def sub_categories(cls):
return db.relationship(cls._flavor_prefix('SubCategory'), back_populates='main_category')
@declarative.declared_attr
def torrents(cls):
return db.relationship(cls._flavor_prefix('Torrent'), back_populates='main_category')
def get_category_ids(self):
return (self.id, 0)
@ -301,18 +391,22 @@ class MainCategory(db.Model):
return cls.query.get(id)
class SubCategory(db.Model):
__tablename__ = DB_TABLE_PREFIX + 'sub_categories'
class SubCategoryBase(DeclarativeHelperBase):
__tablename_base__ = 'sub_categories'
id = db.Column(db.Integer, primary_key=True)
main_category_id = db.Column(db.Integer, db.ForeignKey(
DB_TABLE_PREFIX + 'main_categories.id'), primary_key=True)
@declarative.declared_attr
def main_category_id(cls):
fk = db.ForeignKey(cls._table_prefix('main_categories.id'))
return db.Column(db.Integer, fk, primary_key=True)
name = db.Column(db.String(length=64), nullable=False)
main_category = db.relationship('MainCategory', uselist=False, back_populates='sub_categories')
# torrents = db.relationship('Torrent', back_populates='sub_category'),
# primaryjoin="and_(Torrent.sub_category_id == foreign(SubCategory.id), "
# "Torrent.main_category_id == SubCategory.main_category_id)")
@declarative.declared_attr
def main_category(cls):
return db.relationship(cls._flavor_prefix('MainCategory'), uselist=False,
back_populates='sub_categories')
def get_category_ids(self):
return (self.main_category_id, self.id)
@ -326,17 +420,27 @@ class SubCategory(db.Model):
return cls.query.get((sub_cat_id, main_cat_id))
class Comment(db.Model):
__tablename__ = DB_TABLE_PREFIX + 'comments'
class CommentBase(DeclarativeHelperBase):
__tablename_base__ = 'comments'
id = db.Column(db.Integer, primary_key=True)
torrent_id = db.Column(db.Integer, db.ForeignKey(
DB_TABLE_PREFIX + 'torrents.id', ondelete='CASCADE'), nullable=False)
user_id = db.Column(db.Integer, db.ForeignKey('users.id', ondelete='CASCADE'))
@declarative.declared_attr
def torrent_id(cls):
return db.Column(db.Integer, db.ForeignKey(
cls._table_prefix('torrents.id'), ondelete='CASCADE'), nullable=False)
@declarative.declared_attr
def user_id(cls):
return db.Column(db.Integer, db.ForeignKey('users.id', ondelete='CASCADE'))
created_time = db.Column(db.DateTime(timezone=False), default=datetime.utcnow)
text = db.Column(db.String(length=255, collation=COL_UTF8MB4_BIN), nullable=False)
user = db.relationship('User', uselist=False, back_populates='comments', lazy="joined")
@declarative.declared_attr
def user(cls):
return db.relationship('User', uselist=False,
back_populates=cls._table_prefix('comments'), lazy="joined")
def __repr__(self):
return '<Comment %r>' % self.id
@ -376,9 +480,11 @@ class User(db.Model):
last_login_date = db.Column(db.DateTime(timezone=False), default=None, nullable=True)
last_login_ip = db.Column(db.Binary(length=16), default=None, nullable=True)
torrents = db.relationship('Torrent', back_populates='user', lazy='dynamic')
comments = db.relationship('Comment', back_populates='user', lazy='dynamic')
# session = db.relationship('Session', uselist=False, back_populates='user')
nyaa_torrents = db.relationship('NyaaTorrent', back_populates='user', lazy='dynamic')
nyaa_comments = db.relationship('NyaaComment', back_populates='user', lazy='dynamic')
sukebei_torrents = db.relationship('SukebeiTorrent', back_populates='user', lazy='dynamic')
sukebei_comments = db.relationship('SukebeiComment', back_populates='user', lazy='dynamic')
def __init__(self, username, email, password):
self.username = username
@ -464,12 +570,118 @@ class User(db.Model):
return self.level >= UserLevelType.TRUSTED
# class Session(db.Model):
# __tablename__ = 'sessions'
#
# session_id = db.Column(db.Integer, primary_key=True)
# user_id = db.Column(db.Integer, db.ForeignKey('users.id'), nullable=False)
# login_ip = db.Column(db.Binary(length=16), nullable=True)
# login_date = db.Column(db.DateTime(timezone=False), nullable=True)
#
# user = db.relationship('User', back_populates='session')
# Actually declare our site-specific classes
# Torrent
class NyaaTorrent(TorrentBase, db.Model):
__flavor__ = 'Nyaa'
class SukebeiTorrent(TorrentBase, db.Model):
__flavor__ = 'Sukebei'
# Fulltext models for MySQL
if app.config['USE_MYSQL']:
class NyaaTorrentNameSearch(FullText, NyaaTorrent):
__fulltext_columns__ = ('display_name',)
__table_args__ = {'extend_existing': True}
class SukebeiTorrentNameSearch(FullText, SukebeiTorrent):
__fulltext_columns__ = ('display_name',)
__table_args__ = {'extend_existing': True}
else:
# Bogus classes for Sqlite
class NyaaTorrentNameSearch(object):
pass
class SukebeiTorrentNameSearch(object):
pass
# TorrentFilelist
class NyaaTorrentFilelist(TorrentFilelistBase, db.Model):
__flavor__ = 'Nyaa'
class SukebeiTorrentFilelist(TorrentFilelistBase, db.Model):
__flavor__ = 'Sukebei'
# TorrentInfo
class NyaaTorrentInfo(TorrentInfoBase, db.Model):
__flavor__ = 'Nyaa'
class SukebeiTorrentInfo(TorrentInfoBase, db.Model):
__flavor__ = 'Sukebei'
# Statistic
class NyaaStatistic(StatisticBase, db.Model):
__flavor__ = 'Nyaa'
class SukebeiStatistic(StatisticBase, db.Model):
__flavor__ = 'Sukebei'
# TorrentTrackers
class NyaaTorrentTrackers(TorrentTrackersBase, db.Model):
__flavor__ = 'Nyaa'
class SukebeiTorrentTrackers(TorrentTrackersBase, db.Model):
__flavor__ = 'Sukebei'
# MainCategory
class NyaaMainCategory(MainCategoryBase, db.Model):
__flavor__ = 'Nyaa'
class SukebeiMainCategory(MainCategoryBase, db.Model):
__flavor__ = 'Sukebei'
# SubCategory
class NyaaSubCategory(SubCategoryBase, db.Model):
__flavor__ = 'Nyaa'
class SukebeiSubCategory(SubCategoryBase, db.Model):
__flavor__ = 'Sukebei'
# Comment
class NyaaComment(CommentBase, db.Model):
__flavor__ = 'Nyaa'
class SukebeiComment(CommentBase, db.Model):
__flavor__ = 'Sukebei'
# Choose our defaults for models.Torrent etc
if app.config['SITE_FLAVOR'] == 'nyaa':
Torrent = NyaaTorrent
TorrentFilelist = NyaaTorrentFilelist
TorrentInfo = NyaaTorrentInfo
Statistic = NyaaStatistic
TorrentTrackers = NyaaTorrentTrackers
MainCategory = NyaaMainCategory
SubCategory = NyaaSubCategory
Comment = NyaaComment
TorrentNameSearch = NyaaTorrentNameSearch
elif app.config['SITE_FLAVOR'] == 'sukebei':
Torrent = SukebeiTorrent
TorrentFilelist = SukebeiTorrentFilelist
TorrentInfo = SukebeiTorrentInfo
Statistic = SukebeiStatistic
TorrentTrackers = SukebeiTorrentTrackers
MainCategory = SukebeiMainCategory
SubCategory = SukebeiSubCategory
Comment = SukebeiComment
TorrentNameSearch = SukebeiTorrentNameSearch