ali表格存储之更新，删除，创建
ali表格存储更新数据表：
目前我所了解到的，如果想要更新某一条数据，首先要获取到它的所有主键进行标识才可以进行更新，为了使用方便，我特意为更新自己写了一个函数：
ots_client = OTSClient(OTS_END_POINT, AL_AccessKeyId, AL_AccessKeySecret, OTS_INS)
def update_obt(self,uid, oem_name, **extra_fields):
primary_key = [('uid', uid), ('oem_name', oem_name)]#主键
update_of_attribute_columns = {
'PUT': list((k, v) for k, v in extra_fields.items() if v or v in (0, 0.0)),
}#extra_fields 即你想要更新的字段
try:
row = Row(primary_key, update_of_attribute_columns)
condition = Condition(RowExistenceExpectation.EXPECT_EXIST) #设置验证条件，只有当满足该主键内容的数据存在时才进行修改，如果没有这个验证条件，当主键内容数据表中找不到时，他将会新建一条新的数据。
consumed, return_row = ots_client.update_row(table_name=self.table_name,
row=row,
condition=condition,
return_type=ReturnType.RT_PK#返回内容，目前只支持返回none和主键
)
except OTSClientError as e:
return False, e.get_error_message()
except OTSServiceError as e:
return False, e.get_error_message()
except Exception as e:
return False, e
return True, return_row
ali表格存储删除数据：
ots_client = OTSClient(OTS_END_POINT, AL_AccessKeyId, AL_AccessKeySecret, OTS_INS)
def delete_obt(self, merchant_id, user_id):
primary_key = [('merchant_id', merchant_id), ('user_id', user_id)]
row = Row(primary_key)
try:
consumed, return_row = ots_client .delete_row(self.table_name, row, None)
if consumed.write > 0:
return True, 'Delete succeed, consume %s write cu.' % consumed.write
else:
return False, u'没有找到该用户!'
except OTSClientError as e:
return False,
"update row failed, http_status:%d, error_message:%s" % (e.get_http_status(), e.get_error_message())
except OTSServiceError as e:
return False, "update row failed, http_status:%d, error_code:%s, error_message:%s, request_id:%s" % (e.get_http_status(), e.get_error_code(), e.get_error_message(), e.get_request_id())
except Exception as e:
return False, u'参数异常%s'%e
ali表格存储增加数据：
ots_client = OTSClient(OTS_END_POINT, AL_AccessKeyId, AL_AccessKeySecret, OTS_INS)
def create_obt(self, uid, oem_name, **extra_fields):
primary_key = [('uid', uid), ('oem_name', oem_name)]
now_mktimt = int(time.mktime(timezone.now().timetuple()))
attribute_columns = [
('create_time', now_mktimt),
('write_time', now_mktimt),
('logo_img', extra_fields.get('logo_img', '')),
('service_tel', extra_fields.get('service_tel', '')),
('tagline', extra_fields.get('tagline', '')),
('note', extra_fields.get('note', '')),
('status', extra_fields.get('status', 1))
]
try:
row = Row(primary_key, attribute_columns)
condition = Condition(RowExistenceExpectation.EXPECT_NOT_EXIST)
consumed, return_row = ots_client .put_row(table_name=self.table_name,
row=row,
condition=condition,
return_type=ReturnType.RT_PK
)
except OTSClientError as e:
return False, e.get_error_message()
except OTSServiceError as e:
return False, e.get_error_message()
except Exception as e:
return False, e
# print('Put succeed, consume %s write cu.' % consumed.write)
return True, oem_name