我尝试查看在 ZODB 数据库上运行 ZEO 的文档,但它并没有按照他们所说的那样工作。我可以让常规 ZODB 运行良好,但我想让一个程序的多个进程可以访问数据库,所以我试图让 ZEO 工作。
我在带有子文件夹 zeo 的文件夹中创建了这个脚本,该文件夹将保存由make_server
函数在不同的并行进程中创建的“database.fs”文件:
代码:
from ZEO import ClientStorage
import ZODB
import ZODB.config
import os, time, site, subprocess, multiprocessing
# make the server in for the database in a separate process with windows command
def make_server():
runzeo_path = site.getsitepackages()[0] + "\Lib\site-packages\zeo-4.0.0-py2.7.egg\ZEO\\runzeo.py"
filestorage_path = os.getcwd() + '\zeo\database.fs'
subprocess.call(["python", runzeo_path, "-a", "127.0.0.1:9100", "-f" , filestorage_path])
if __name__ == "__main__":
server_process = multiprocessing.Process(target = make_server)
server_process.start()
time.sleep(5)
storage = ClientStorage.ClientStorage(('localhost', 9100), wait=False)
db = ZODB.DB(storage)
connection = db.open()
root = connection.root()
如果没有给出,程序只会在该ClientStorage
行阻塞。wait=False
如果wait=False
给出它会产生这个错误:
错误信息:
Traceback (most recent call last):
File "C:\Users\cbrown\Google Drive\EclipseWorkspace\NewSpectro - v1\20131202\2 - database\zeo.py", line 17, in <module>
db = ZODB.DB(storage)
File "C:\Python27\lib\site-packages\zodb-4.0.0-py2.7.egg\ZODB\DB.py", line 443, in __init__
temp_storage.load(z64, '')
File "C:\Python27\lib\site-packages\zeo-4.0.0-py2.7.egg\ZEO\ClientStorage.py", line 841, in load
data, tid = self._server.loadEx(oid)
File "C:\Python27\lib\site-packages\zeo-4.0.0-py2.7.egg\ZEO\ClientStorage.py", line 88, in __getattr__
raise ClientDisconnected()
ClientDisconnected
这是运行服务器的进程的 cmd 提示符的输出:
------
2013-12-06T21:07:27 INFO ZEO.runzeo (7460) opening storage '1' using FileStorage
------
2013-12-06T21:07:27 WARNING ZODB.FileStorage Ignoring index for C:\Users\cab0008
\Google Drive\EclipseWorkspace\NewSpectro - v1\20131202\2 - database\zeo\databas
e.fs
------
2013-12-06T21:07:27 INFO ZEO.StorageServer StorageServer created RW with storage
s: 1:RW:C:\Users\cab0008\Google Drive\EclipseWorkspace\NewSpectro - v1\20131202\
2 - database\zeo\database.fs
------
2013-12-06T21:07:27 INFO ZEO.zrpc (7460) listening on ('127.0.0.1', 9100)
我可能做错了什么?我只是希望它现在可以在本地工作,所以不需要花哨的网络东西。