Changeset - 36f77a46f291
[Not reviewed]
beta
0 1 0
Marcin Kuzminski - 14 years ago 2011-11-11 17:45:48
marcin@python-works.com
Added cache options to some db getters
1 file changed with 16 insertions and 5 deletions:
0 comments (0 inline, 0 general)
rhodecode/model/db.py
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@@ -116,393 +116,403 @@ class BaseModel(object):
 
    def populate_obj(self, populate_dict):
 
        """populate model with data from given populate_dict"""
 

	
 
        for k in self._get_keys():
 
            if k in populate_dict:
 
                setattr(self, k, populate_dict[k])
 

	
 
    @classmethod
 
    def query(cls):
 
        return Session.query(cls)
 

	
 
    @classmethod
 
    def get(cls, id_):
 
        if id_:
 
            return cls.query().get(id_)
 

	
 
    @classmethod
 
    def getAll(cls):
 
        return cls.query().all()
 

	
 
    @classmethod
 
    def delete(cls, id_):
 
        obj = cls.query().get(id_)
 
        Session.delete(obj)
 
        Session.commit()
 

	
 

	
 
class RhodeCodeSetting(Base, BaseModel):
 
    __tablename__ = 'rhodecode_settings'
 
    __table_args__ = (UniqueConstraint('app_settings_name'), {'extend_existing':True})
 
    app_settings_id = Column("app_settings_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
 
    app_settings_name = Column("app_settings_name", String(length=255, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
 
    _app_settings_value = Column("app_settings_value", String(length=255, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
 

	
 
    def __init__(self, k='', v=''):
 
        self.app_settings_name = k
 
        self.app_settings_value = v
 

	
 

	
 
    @validates('_app_settings_value')
 
    def validate_settings_value(self, key, val):
 
        assert type(val) == unicode
 
        return val
 

	
 
    @hybrid_property
 
    def app_settings_value(self):
 
        v = self._app_settings_value
 
        if v == 'ldap_active':
 
            v = str2bool(v)
 
        return v
 

	
 
    @app_settings_value.setter
 
    def app_settings_value(self, val):
 
        """
 
        Setter that will always make sure we use unicode in app_settings_value
 

	
 
        :param val:
 
        """
 
        self._app_settings_value = safe_unicode(val)
 

	
 
    def __repr__(self):
 
        return "<%s('%s:%s')>" % (self.__class__.__name__,
 
                                  self.app_settings_name, self.app_settings_value)
 

	
 

	
 
    @classmethod
 
    def get_by_name(cls, ldap_key):
 
        return cls.query()\
 
            .filter(cls.app_settings_name == ldap_key).scalar()
 

	
 
    @classmethod
 
    def get_app_settings(cls, cache=False):
 

	
 
        ret = cls.query()
 

	
 
        if cache:
 
            ret = ret.options(FromCache("sql_cache_short", "get_hg_settings"))
 

	
 
        if not ret:
 
            raise Exception('Could not get application settings !')
 
        settings = {}
 
        for each in ret:
 
            settings['rhodecode_' + each.app_settings_name] = \
 
                each.app_settings_value
 

	
 
        return settings
 

	
 
    @classmethod
 
    def get_ldap_settings(cls, cache=False):
 
        ret = cls.query()\
 
                .filter(cls.app_settings_name.startswith('ldap_')).all()
 
        fd = {}
 
        for row in ret:
 
            fd.update({row.app_settings_name:row.app_settings_value})
 

	
 
        return fd
 

	
 

	
 
class RhodeCodeUi(Base, BaseModel):
 
    __tablename__ = 'rhodecode_ui'
 
    __table_args__ = (UniqueConstraint('ui_key'), {'extend_existing':True})
 

	
 
    HOOK_UPDATE = 'changegroup.update'
 
    HOOK_REPO_SIZE = 'changegroup.repo_size'
 
    HOOK_PUSH = 'pretxnchangegroup.push_logger'
 
    HOOK_PULL = 'preoutgoing.pull_logger'
 

	
 
    ui_id = Column("ui_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
 
    ui_section = Column("ui_section", String(length=255, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
 
    ui_key = Column("ui_key", String(length=255, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
 
    ui_value = Column("ui_value", String(length=255, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
 
    ui_active = Column("ui_active", Boolean(), nullable=True, unique=None, default=True)
 

	
 

	
 
    @classmethod
 
    def get_by_key(cls, key):
 
        return cls.query().filter(cls.ui_key == key)
 

	
 

	
 
    @classmethod
 
    def get_builtin_hooks(cls):
 
        q = cls.query()
 
        q = q.filter(cls.ui_key.in_([cls.HOOK_UPDATE,
 
                                    cls.HOOK_REPO_SIZE,
 
                                    cls.HOOK_PUSH, cls.HOOK_PULL]))
 
        return q.all()
 

	
 
    @classmethod
 
    def get_custom_hooks(cls):
 
        q = cls.query()
 
        q = q.filter(~cls.ui_key.in_([cls.HOOK_UPDATE,
 
                                    cls.HOOK_REPO_SIZE,
 
                                    cls.HOOK_PUSH, cls.HOOK_PULL]))
 
        q = q.filter(cls.ui_section == 'hooks')
 
        return q.all()
 

	
 
    @classmethod
 
    def create_or_update_hook(cls, key, val):
 
        new_ui = cls.get_by_key(key).scalar() or cls()
 
        new_ui.ui_section = 'hooks'
 
        new_ui.ui_active = True
 
        new_ui.ui_key = key
 
        new_ui.ui_value = val
 

	
 
        Session.add(new_ui)
 
        Session.commit()
 

	
 

	
 
class User(Base, BaseModel):
 
    __tablename__ = 'users'
 
    __table_args__ = (UniqueConstraint('username'), UniqueConstraint('email'), {'extend_existing':True})
 
    user_id = Column("user_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
 
    username = Column("username", String(length=255, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
 
    password = Column("password", String(length=255, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
 
    active = Column("active", Boolean(), nullable=True, unique=None, default=None)
 
    admin = Column("admin", Boolean(), nullable=True, unique=None, default=False)
 
    name = Column("name", String(length=255, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
 
    lastname = Column("lastname", String(length=255, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
 
    email = Column("email", String(length=255, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
 
    last_login = Column("last_login", DateTime(timezone=False), nullable=True, unique=None, default=None)
 
    ldap_dn = Column("ldap_dn", String(length=255, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
 
    api_key = Column("api_key", String(length=255, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
 

	
 
    user_log = relationship('UserLog', cascade='all')
 
    user_perms = relationship('UserToPerm', primaryjoin="User.user_id==UserToPerm.user_id", cascade='all')
 

	
 
    repositories = relationship('Repository')
 
    user_followers = relationship('UserFollowing', primaryjoin='UserFollowing.follows_user_id==User.user_id', cascade='all')
 
    repo_to_perm = relationship('UserRepoToPerm', primaryjoin='UserRepoToPerm.user_id==User.user_id', cascade='all')
 

	
 
    group_member = relationship('UsersGroupMember', cascade='all')
 

	
 
    @property
 
    def full_contact(self):
 
        return '%s %s <%s>' % (self.name, self.lastname, self.email)
 

	
 
    @property
 
    def short_contact(self):
 
        return '%s %s' % (self.name, self.lastname)
 

	
 
    @property
 
    def is_admin(self):
 
        return self.admin
 

	
 
    def __repr__(self):
 
        try:
 
            return "<%s('id:%s:%s')>" % (self.__class__.__name__,
 
                                             self.user_id, self.username)
 
        except:
 
            return self.__class__.__name__
 

	
 
    @classmethod
 
    def get_by_username(cls, username, case_insensitive=False):
 
    def get_by_username(cls, username, case_insensitive=False, cache=False):
 
        if case_insensitive:
 
            return Session.query(cls).filter(cls.username.ilike(username)).scalar()
 
            q = cls.query().filter(cls.username.ilike(username))
 
        else:
 
            return Session.query(cls).filter(cls.username == username).scalar()
 
            q = cls.query().filter(cls.username == username)
 

	
 
        if cache:
 
            q = q.options(FromCache("sql_cache_short",
 
                                    "get_user_%s" % username))
 
        return q.scalar()
 

	
 
    @classmethod
 
    def get_by_api_key(cls, api_key):
 
        return cls.query().filter(cls.api_key == api_key).one()
 
    def get_by_api_key(cls, api_key, cache=False):
 
        q = cls.query().filter(cls.api_key == api_key)
 

	
 
        if cache:
 
            q = q.options(FromCache("sql_cache_short",
 
                                    "get_api_key_%s" % api_key))
 
        q.one()
 

	
 
    def update_lastlogin(self):
 
        """Update user lastlogin"""
 

	
 
        self.last_login = datetime.datetime.now()
 
        Session.add(self)
 
        Session.commit()
 
        log.debug('updated user %s lastlogin', self.username)
 

	
 
class UserLog(Base, BaseModel):
 
    __tablename__ = 'user_logs'
 
    __table_args__ = {'extend_existing':True}
 
    user_log_id = Column("user_log_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
 
    user_id = Column("user_id", Integer(), ForeignKey('users.user_id'), nullable=False, unique=None, default=None)
 
    repository_id = Column("repository_id", Integer(), ForeignKey('repositories.repo_id'), nullable=False, unique=None, default=None)
 
    repository_name = Column("repository_name", String(length=255, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
 
    user_ip = Column("user_ip", String(length=255, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
 
    action = Column("action", UnicodeText(length=1200000, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
 
    action_date = Column("action_date", DateTime(timezone=False), nullable=True, unique=None, default=None)
 

	
 
    @property
 
    def action_as_day(self):
 
        return date(*self.action_date.timetuple()[:3])
 

	
 
    user = relationship('User')
 
    repository = relationship('Repository')
 

	
 

	
 
class UsersGroup(Base, BaseModel):
 
    __tablename__ = 'users_groups'
 
    __table_args__ = {'extend_existing':True}
 

	
 
    users_group_id = Column("users_group_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
 
    users_group_name = Column("users_group_name", String(length=255, convert_unicode=False, assert_unicode=None), nullable=False, unique=True, default=None)
 
    users_group_active = Column("users_group_active", Boolean(), nullable=True, unique=None, default=None)
 

	
 
    members = relationship('UsersGroupMember', cascade="all, delete, delete-orphan", lazy="joined")
 

	
 
    def __repr__(self):
 
        return '<userGroup(%s)>' % (self.users_group_name)
 

	
 
    @classmethod
 
    def get_by_group_name(cls, group_name, cache=False, case_insensitive=False):
 
        if case_insensitive:
 
            gr = cls.query()\
 
                .filter(cls.users_group_name.ilike(group_name))
 
        else:
 
            gr = cls.query()\
 
                .filter(cls.users_group_name == group_name)
 
        if cache:
 
            gr = gr.options(FromCache("sql_cache_short",
 
                                          "get_user_%s" % group_name))
 
        return gr.scalar()
 

	
 

	
 
    @classmethod
 
    def get(cls, users_group_id, cache=False):
 
        users_group = cls.query()
 
        if cache:
 
            users_group = users_group.options(FromCache("sql_cache_short",
 
                                    "get_users_group_%s" % users_group_id))
 
        return users_group.get(users_group_id)
 

	
 
    @classmethod
 
    def create(cls, form_data):
 
        try:
 
            new_users_group = cls()
 
            for k, v in form_data.items():
 
                setattr(new_users_group, k, v)
 

	
 
            Session.add(new_users_group)
 
            Session.commit()
 
            return new_users_group
 
        except:
 
            log.error(traceback.format_exc())
 
            Session.rollback()
 
            raise
 

	
 
    @classmethod
 
    def update(cls, users_group_id, form_data):
 

	
 
        try:
 
            users_group = cls.get(users_group_id, cache=False)
 

	
 
            for k, v in form_data.items():
 
                if k == 'users_group_members':
 
                    users_group.members = []
 
                    Session.flush()
 
                    members_list = []
 
                    if v:
 
                        v = [v] if isinstance(v, basestring) else v
 
                        for u_id in set(v):
 
                            member = UsersGroupMember(users_group_id, u_id)
 
                            members_list.append(member)
 
                    setattr(users_group, 'members', members_list)
 
                setattr(users_group, k, v)
 

	
 
            Session.add(users_group)
 
            Session.commit()
 
        except:
 
            log.error(traceback.format_exc())
 
            Session.rollback()
 
            raise
 

	
 
    @classmethod
 
    def delete(cls, users_group_id):
 
        try:
 

	
 
            # check if this group is not assigned to repo
 
            assigned_groups = UsersGroupRepoToPerm.query()\
 
                .filter(UsersGroupRepoToPerm.users_group_id ==
 
                        users_group_id).all()
 

	
 
            if assigned_groups:
 
                raise UsersGroupsAssignedException('RepoGroup assigned to %s' %
 
                                                   assigned_groups)
 

	
 
            users_group = cls.get(users_group_id, cache=False)
 
            Session.delete(users_group)
 
            Session.commit()
 
        except:
 
            log.error(traceback.format_exc())
 
            Session.rollback()
 
            raise
 

	
 
class UsersGroupMember(Base, BaseModel):
 
    __tablename__ = 'users_groups_members'
 
    __table_args__ = {'extend_existing':True}
 

	
 
    users_group_member_id = Column("users_group_member_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
 
    users_group_id = Column("users_group_id", Integer(), ForeignKey('users_groups.users_group_id'), nullable=False, unique=None, default=None)
 
    user_id = Column("user_id", Integer(), ForeignKey('users.user_id'), nullable=False, unique=None, default=None)
 

	
 
    user = relationship('User', lazy='joined')
 
    users_group = relationship('UsersGroup')
 

	
 
    def __init__(self, gr_id='', u_id=''):
 
        self.users_group_id = gr_id
 
        self.user_id = u_id
 

	
 
    @staticmethod
 
    def add_user_to_group(group, user):
 
        ugm = UsersGroupMember()
 
        ugm.users_group = group
 
        ugm.user = user
 
        Session.add(ugm)
 
        Session.commit()
 
        return ugm
 

	
 
class Repository(Base, BaseModel):
 
    __tablename__ = 'repositories'
 
    __table_args__ = (UniqueConstraint('repo_name'), {'extend_existing':True},)
 

	
 
    repo_id = Column("repo_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
 
    repo_name = Column("repo_name", String(length=255, convert_unicode=False, assert_unicode=None), nullable=False, unique=True, default=None)
 
    clone_uri = Column("clone_uri", String(length=255, convert_unicode=False, assert_unicode=None), nullable=True, unique=False, default=None)
 
    repo_type = Column("repo_type", String(length=255, convert_unicode=False, assert_unicode=None), nullable=False, unique=False, default='hg')
 
    user_id = Column("user_id", Integer(), ForeignKey('users.user_id'), nullable=False, unique=False, default=None)
 
    private = Column("private", Boolean(), nullable=True, unique=None, default=None)
 
    enable_statistics = Column("statistics", Boolean(), nullable=True, unique=None, default=True)
 
    enable_downloads = Column("downloads", Boolean(), nullable=True, unique=None, default=True)
 
    description = Column("description", String(length=10000, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
 
    created_on = Column('created_on', DateTime(timezone=False), nullable=True, unique=None, default=datetime.datetime.now)
 

	
 
    fork_id = Column("fork_id", Integer(), ForeignKey('repositories.repo_id'), nullable=True, unique=False, default=None)
 
    group_id = Column("group_id", Integer(), ForeignKey('groups.group_id'), nullable=True, unique=False, default=None)
 

	
 

	
 
    user = relationship('User')
 
    fork = relationship('Repository', remote_side=repo_id)
 
    group = relationship('RepoGroup')
 
    repo_to_perm = relationship('UserRepoToPerm', cascade='all', order_by='UserRepoToPerm.repo_to_perm_id')
 
    users_group_to_perm = relationship('UsersGroupRepoToPerm', cascade='all')
 
    stats = relationship('Statistics', cascade='all', uselist=False)
 

	
 
    followers = relationship('UserFollowing', primaryjoin='UserFollowing.follows_repo_id==Repository.repo_id', cascade='all')
 

	
 
    logs = relationship('UserLog', cascade='all')
 

	
 
    def __repr__(self):
 
        return "<%s('%s:%s')>" % (self.__class__.__name__,
 
                                  self.repo_id, self.repo_name)
 

	
 
    @classmethod
 
    def url_sep(cls):
 
        return '/'
 

	
 
    @classmethod
 
    def get_by_repo_name(cls, repo_name):
 
        q = Session.query(cls).filter(cls.repo_name == repo_name)
 
        q = q.options(joinedload(Repository.fork))\
 
                .options(joinedload(Repository.user))\
 
@@ -894,199 +904,200 @@ class UserToPerm(Base, BaseModel):
 
class UsersGroupRepoToPerm(Base, BaseModel):
 
    __tablename__ = 'users_group_repo_to_perm'
 
    __table_args__ = (UniqueConstraint('repository_id', 'users_group_id', 'permission_id'), {'extend_existing':True})
 
    users_group_to_perm_id = Column("users_group_to_perm_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
 
    users_group_id = Column("users_group_id", Integer(), ForeignKey('users_groups.users_group_id'), nullable=False, unique=None, default=None)
 
    permission_id = Column("permission_id", Integer(), ForeignKey('permissions.permission_id'), nullable=False, unique=None, default=None)
 
    repository_id = Column("repository_id", Integer(), ForeignKey('repositories.repo_id'), nullable=False, unique=None, default=None)
 

	
 
    users_group = relationship('UsersGroup')
 
    permission = relationship('Permission')
 
    repository = relationship('Repository')
 

	
 
    def __repr__(self):
 
        return '<userGroup:%s => %s >' % (self.users_group, self.repository)
 

	
 
class UsersGroupToPerm(Base, BaseModel):
 
    __tablename__ = 'users_group_to_perm'
 
    users_group_to_perm_id = Column("users_group_to_perm_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
 
    users_group_id = Column("users_group_id", Integer(), ForeignKey('users_groups.users_group_id'), nullable=False, unique=None, default=None)
 
    permission_id = Column("permission_id", Integer(), ForeignKey('permissions.permission_id'), nullable=False, unique=None, default=None)
 

	
 
    users_group = relationship('UsersGroup')
 
    permission = relationship('Permission')
 

	
 

	
 
    @classmethod
 
    def has_perm(cls, users_group_id, perm):
 
        if not isinstance(perm, Permission):
 
            raise Exception('perm needs to be an instance of Permission class')
 

	
 
        return cls.query().filter(cls.users_group_id ==
 
                                         users_group_id)\
 
                                         .filter(cls.permission == perm)\
 
                                         .scalar() is not None
 

	
 
    @classmethod
 
    def grant_perm(cls, users_group_id, perm):
 
        if not isinstance(perm, Permission):
 
            raise Exception('perm needs to be an instance of Permission class')
 

	
 
        new = cls()
 
        new.users_group_id = users_group_id
 
        new.permission = perm
 
        try:
 
            Session.add(new)
 
            Session.commit()
 
        except:
 
            Session.rollback()
 

	
 

	
 
    @classmethod
 
    def revoke_perm(cls, users_group_id, perm):
 
        if not isinstance(perm, Permission):
 
            raise Exception('perm needs to be an instance of Permission class')
 

	
 
        try:
 
            cls.query().filter(cls.users_group_id == users_group_id)\
 
                .filter(cls.permission == perm).delete()
 
            Session.commit()
 
        except:
 
            Session.rollback()
 

	
 

	
 
class UserRepoGroupToPerm(Base, BaseModel):
 
    __tablename__ = 'group_to_perm'
 
    __table_args__ = (UniqueConstraint('group_id', 'permission_id'), {'extend_existing':True})
 

	
 
    group_to_perm_id = Column("group_to_perm_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
 
    user_id = Column("user_id", Integer(), ForeignKey('users.user_id'), nullable=False, unique=None, default=None)
 
    permission_id = Column("permission_id", Integer(), ForeignKey('permissions.permission_id'), nullable=False, unique=None, default=None)
 
    group_id = Column("group_id", Integer(), ForeignKey('groups.group_id'), nullable=False, unique=None, default=None)
 

	
 
    user = relationship('User')
 
    permission = relationship('Permission')
 
    group = relationship('RepoGroup')
 

	
 
class UsersGroupRepoGroupToPerm(Base, BaseModel):
 
    __tablename__ = 'users_group_repo_group_to_perm'
 
    __table_args__ = (UniqueConstraint('group_id', 'permission_id'), {'extend_existing':True})
 

	
 
    users_group_repo_group_to_perm_id = Column("users_group_repo_group_to_perm_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
 
    users_group_id = Column("users_group_id", Integer(), ForeignKey('users_groups.users_group_id'), nullable=False, unique=None, default=None)
 
    permission_id = Column("permission_id", Integer(), ForeignKey('permissions.permission_id'), nullable=False, unique=None, default=None)
 
    group_id = Column("group_id", Integer(), ForeignKey('groups.group_id'), nullable=False, unique=None, default=None)
 

	
 
    users_group = relationship('UsersGroup')
 
    permission = relationship('Permission')
 
    group = relationship('RepoGroup')
 

	
 
class Statistics(Base, BaseModel):
 
    __tablename__ = 'statistics'
 
    __table_args__ = (UniqueConstraint('repository_id'), {'extend_existing':True})
 
    stat_id = Column("stat_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
 
    repository_id = Column("repository_id", Integer(), ForeignKey('repositories.repo_id'), nullable=False, unique=True, default=None)
 
    stat_on_revision = Column("stat_on_revision", Integer(), nullable=False)
 
    commit_activity = Column("commit_activity", LargeBinary(1000000), nullable=False)#JSON data
 
    commit_activity_combined = Column("commit_activity_combined", LargeBinary(), nullable=False)#JSON data
 
    languages = Column("languages", LargeBinary(1000000), nullable=False)#JSON data
 

	
 
    repository = relationship('Repository', single_parent=True)
 

	
 
class UserFollowing(Base, BaseModel):
 
    __tablename__ = 'user_followings'
 
    __table_args__ = (UniqueConstraint('user_id', 'follows_repository_id'),
 
                      UniqueConstraint('user_id', 'follows_user_id')
 
                      , {'extend_existing':True})
 

	
 
    user_following_id = Column("user_following_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
 
    user_id = Column("user_id", Integer(), ForeignKey('users.user_id'), nullable=False, unique=None, default=None)
 
    follows_repo_id = Column("follows_repository_id", Integer(), ForeignKey('repositories.repo_id'), nullable=True, unique=None, default=None)
 
    follows_user_id = Column("follows_user_id", Integer(), ForeignKey('users.user_id'), nullable=True, unique=None, default=None)
 
    follows_from = Column('follows_from', DateTime(timezone=False), nullable=True, unique=None, default=datetime.datetime.now)
 

	
 
    user = relationship('User', primaryjoin='User.user_id==UserFollowing.user_id')
 

	
 
    follows_user = relationship('User', primaryjoin='User.user_id==UserFollowing.follows_user_id')
 
    follows_repository = relationship('Repository', order_by='Repository.repo_name')
 

	
 

	
 
    @classmethod
 
    def get_repo_followers(cls, repo_id):
 
        return cls.query().filter(cls.follows_repo_id == repo_id)
 

	
 
class CacheInvalidation(Base, BaseModel):
 
    __tablename__ = 'cache_invalidation'
 
    __table_args__ = (UniqueConstraint('cache_key'), {'extend_existing':True})
 
    cache_id = Column("cache_id", Integer(), nullable=False, unique=True, default=None, primary_key=True)
 
    cache_key = Column("cache_key", String(length=255, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
 
    cache_args = Column("cache_args", String(length=255, convert_unicode=False, assert_unicode=None), nullable=True, unique=None, default=None)
 
    cache_active = Column("cache_active", Boolean(), nullable=True, unique=None, default=False)
 

	
 

	
 
    def __init__(self, cache_key, cache_args=''):
 
        self.cache_key = cache_key
 
        self.cache_args = cache_args
 
        self.cache_active = False
 

	
 
    def __repr__(self):
 
        return "<%s('%s:%s')>" % (self.__class__.__name__,
 
                                  self.cache_id, self.cache_key)
 

	
 
    @classmethod
 
    def invalidate(cls, key):
 
        """
 
        Returns Invalidation object if this given key should be invalidated
 
        None otherwise. `cache_active = False` means that this cache
 
        state is not valid and needs to be invalidated
 
        
 
        :param key:
 
        """
 
        return cls.query()\
 
                .filter(CacheInvalidation.cache_key == key)\
 
                .filter(CacheInvalidation.cache_active == False)\
 
                .scalar()
 

	
 
    @classmethod
 
    def set_invalidate(cls, key):
 
        """
 
        Mark this Cache key for invalidation
 
        
 
        :param key:
 
        """
 

	
 
        log.debug('marking %s for invalidation' % key)
 
        inv_obj = Session().query(cls)\
 
            .filter(cls.cache_key == key).scalar()
 
        if inv_obj:
 
            inv_obj.cache_active = False
 
        else:
 
            log.debug('cache key not found in invalidation db -> creating one')
 
            inv_obj = CacheInvalidation(key)
 

	
 
        try:
 
            Session.add(inv_obj)
 
            Session.commit()
 
        except Exception:
 
            log.error(traceback.format_exc())
 
            Session.rollback()
 

	
 
    @classmethod
 
    def set_valid(cls, key):
 
        """
 
        Mark this cache key as active and currently cached
 
        
 
        :param key:
 
        """
 
        inv_obj = Session().query(CacheInvalidation)\
 
            .filter(CacheInvalidation.cache_key == key).scalar()
 
        inv_obj.cache_active = True
 
        Session.add(inv_obj)
 
        Session.commit()
 

	
 

	
 
class DbMigrateVersion(Base, BaseModel):
 
    __tablename__ = 'db_migrate_version'
 
    __table_args__ = {'extend_existing':True}
 
    repository_id = Column('repository_id', String(250), primary_key=True)
 
    repository_path = Column('repository_path', Text)
 
    version = Column('version', Integer)
 

	
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