怎样在Plone中执行周期性的任务

文本 Clock and asyncronous tasks¶[align=left]Description[/align][align=left]How to run background tasks or cron jobs with Zope[/align]

• Cron jobs
• Clock server
• Asynchronous
• lovely.remotetask

Cron jobs¶You can use simple UNIX cron + wget combo to make timed jobs in Plone.
If you need to authenticate, e.g. as an admin, Zope users (not Plone users)can be authenticated using HTTP Basic Auth.

• [align=left]Create user in Zope root (not Plone site root) in acl_users folder[/align]
• [align=left]Call it via HTTP Basic Auth[/align][indent]http://username:password@localhost:8080/yoursideid/@@clock_view_name
[/indent]

Clock server¶You can make Zope to make regular calls to your views.
Add in buildout.cfg:
zope-conf-additional =
<clock-server>
method /xxx/feed-mega-update
period 3600
user updater
password 123123
host xxx.com
</clock-server>

<clock-server>
method /yyy/feed-mega-update
period 3600
user updater
password 123123
host yyy.com
</clock-server>

Create a corresponding user in ZMI.
If you are using a public source control repository for your buildout.cfg youmight want to put zope-conf-additional= to secret.cfg which lies only on theproduction server and is never committed to the version control:
# Change the number here to change the version of Plone being used
extends =
http://dist.plone.org/release/4.1rc3/versions.cfg
http://good-py.appspot.com/release/dexterity/1.0?plone=4.1rc3
http://plonegomobile.googlecode.com/svn/gomobile.buildout/gomobile.plone-4.trunk.commit-access.cfg
secret.cfg