def query_all_objs(self):
"""获取所有的数据"""
with session.SessionForRead() as s:
objs = (s.query(m.SnapshotStorage).filter(
m.SnapshotStorage.tree_ident == self.tree_ident).all())
return objs
def is_ident_exist(self):
"""查询某ident是否存在"""
with session.SessionForRead() as s:
if s.query(m.SnapshotStorage).filter(
m.SnapshotStorage.ident == self.ident).first():
return True
else:
return False
def query_valid_objs(self):
"""获取有效的数据"""
with session.SessionForRead() as s:
objs = (s.query(m.SnapshotStorage).filter(
m.SnapshotStorage.tree_ident == self.tree_ident).filter(
m.SnapshotStorage.status.notin_(
m.SnapshotStorage.INVALID_STORAGE_STATUS)).all())
return objs
def query_objs(self):
"""获取创建日志"""
with session.SessionForRead() as s:
q = s.query(m.Journal).filter(m.Journal.consumed_timestamp.is_(None))
if self.tree_ident:
q = q.filter(m.Journal.tree_ident == self.tree_ident)
if self.journal_types:
q = q.filter(m.Journal.operation_type.in_(self.journal_types))
return q.order_by(m.Journal.id).all()
def get_obj(self):
"""获取数据
:raise
JournalNotExist
"""
with session.SessionForRead() as s:
obj = s.query(m.Journal).filter(m.Journal.token == self.token).first()
if not obj:
raise JournalNotExist(f'not exist token : {self.token}')
return obj
def get_obj(self):
"""获取快照对象"""
with session.SessionForRead() as s:
return s.query(m.SnapshotStorage).filter(
m.SnapshotStorage.ident == self.ident).first()
def query(self):
with session.SessionForRead() as s:
q = s.query(m.SnapshotStorage).filter(
m.SnapshotStorage.ident == self.storage_ident).first()
return q
def drop(self):
with session.SessionForRead() as s:
q = s.query(m.SnapshotStorage).filter(
m.SnapshotStorage.ident == self.storage_ident).first()
s.delete(q)
s.commit()