PyMongo/Mongoengine等价于mongodump [英] PyMongo/Mongoengine equivalent of mongodump

问题描述

在PyMongo或mongoengine中是否有与MongoDB的mongodump等效的功能?我似乎在文档中找不到任何内容.

Is there an equivalent function in PyMongo or mongoengine to MongoDB's mongodump? I can't seem to find anything in the docs.

用例:我需要定期备份远程mongo数据库.本地计算机是未安装mongo的生产服务器，并且我没有管理员权限，因此无法使用subprocess调用mongodump.我可以在virtualenv上本地安装mongo客户端，但是我更喜欢API调用.

Use case: I need to periodically backup a remote mongo database. The local machine is a production server that does not have mongo installed, and I do not have admin rights, so I can't use subprocess to call mongodump. I could install the mongo client locally on a virtualenv, but I'd prefer an API call.

非常感谢:-).

推荐答案

对于我相对较小的小型数据库，我最终使用了以下解决方案.它并不真正适用于大型数据库或复杂数据库，但足以满足我的情况.它将所有文档作为json转储到备份目录.它笨拙，但是除了pymongo之外，它不依赖其他任何东西.

For my relatively small small database, I eventually used the following solution. It's not really suitable for big or complex databases, but it suffices for my case. It dumps all documents as a json to the backup directory. It's clunky, but it does not rely on other stuff than pymongo.

from os.path import join
import pymongo
from bson.json_utils import dumps

def backup_db(backup_db_dir):
    client = pymongo.MongoClient(host=<host>, port=<port>)
    database = client[<db_name>]
    authenticated = database.authenticate(<uname>,<pwd>)
    assert authenticated, "Could not authenticate to database!"
    collections = database.collection_names()
    for i, collection_name in enumerate(collections):
        col = getattr(database,collections[i])
        collection = col.find()
        jsonpath = collection_name + ".json"
        jsonpath = join(backup_db_dir, jsonpath)
        with open(jsonpath, 'wb') as jsonfile:
            jsonfile.write(dumps(collection))

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