mirror of https://github.com/jumpserver/jumpserver
98 lines
2.7 KiB
Python
98 lines
2.7 KiB
Python
from contextlib import contextmanager
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from django.db import connections, transaction, connection
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from django.utils.encoding import force_str
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from common.utils import get_logger, signer, crypto
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logger = get_logger(__file__)
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def get_object_if_need(model, pk):
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if not isinstance(pk, model):
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try:
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return model.objects.get(id=pk)
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except model.DoesNotExist as e:
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logger.error(f"DoesNotExist: <{model.__name__}:{pk}> not exist")
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raise e
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return pk
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def get_objects_if_need(model, pks):
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if not pks:
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return pks
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if not isinstance(pks[0], model):
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objs = list(model.objects.filter(id__in=pks))
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if len(objs) != len(pks):
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pks = set(pks)
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exists_pks = {o.id for o in objs}
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not_found_pks = ",".join(pks - exists_pks)
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logger.error(f"DoesNotExist: <{model.__name__}: {not_found_pks}>")
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return objs
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return pks
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def get_objects(model, pks):
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if not pks:
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return pks
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objs = list(model.objects.filter(id__in=pks))
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if len(objs) != len(pks):
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pks = set(pks)
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exists_pks = {o.id for o in objs}
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not_found_pks = pks - exists_pks
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logger.error(f"DoesNotExist: <{model.__name__}: {not_found_pks}>")
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return objs
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# 复制 django.db.close_old_connections, 因为它没有导出，ide 提示有问题
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def close_old_connections():
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for conn in connections.all():
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conn.close_if_unusable_or_obsolete()
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@contextmanager
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def safe_db_connection():
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in_atomic_block = connection.in_atomic_block # 当前是否处于事务中
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autocommit = transaction.get_autocommit() # 是否启用了自动提交
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created = False
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try:
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if not connection.is_usable():
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connection.close()
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connection.connect()
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created = True
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yield
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finally:
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# 如果不是事务中（API 请求中可能需要提交事务），则关闭连接
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if created and not in_atomic_block and autocommit:
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print("close connection in safe_db_connection")
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close_old_connections()
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@contextmanager
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def open_db_connection(alias="default"):
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connection = transaction.get_connection(alias)
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try:
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connection.connect()
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with transaction.atomic():
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yield connection
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finally:
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connection.close()
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class Encryptor:
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def __init__(self, value):
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self.value = force_str(value)
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def decrypt(self):
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plain_value = crypto.decrypt(self.value)
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# 如果没有解开，使用原来的signer解密
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if not plain_value:
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plain_value = signer.unsign(self.value) or ""
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return plain_value
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def encrypt(self):
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return crypto.encrypt(self.value)
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