[Owncloud] CronJob System within ownCloud

[Arthur Schiwon]

I just played around with it a bit.

As long as the pear package is provided, the daemon can run as www-data. 
Some options need to be set, and the uid and gid need to be detected. A 
log file and a pid file need to be specified where the daemon can write to.

A running example modified from the simple one provided on the pear page:
http://pastebin.com/x8MBDcV1

To start it a simple
exec('/var/www/daemon.php');
is enough. Deeper integration into  the system of course is not 
possible,  but in general a simple daemon may indeed run without much aches.

Cheers
Arthur


On 07/23/2012 11:07 AM, Frank Karlitschek wrote:
> One of the design goal os ownCloud is that is should enable as many people as possible to host an ownCloud instance. So someone with jut a webspace at a university for example should be able to run ownCloud by just copying ownCloud into the webspace.
> A solution like this System Daemon wouldn´t run in this scenario and would require significant more knowledge to install and run than currently.
>
> Frank
>
>
> On 23.07.2012, at 11:03, Arthur Schiwon <blizzz at owncloud.com> wrote:
>
>> Did you consider the option of a daemon? That could provide even a bit more flexibility and people wouldn't need to change anything on the server.
>>
>> http://pear.php.net/package/System_Daemon/
>>
>> Cheers
>> Arthur
>>
>> On 07/22/2012 05:38 PM, Jakob Sack wrote:
>>> Hi all,
>>>
>>> after the sprint in Stuttgart I talked with Jörn Friedrich Dreyer about
>>> the background job problem. If I remember correctly the two most
>>> important suggestions were (a) using cron and (b) using long time
>>> polling/ajax.
>>>
>>> I'd suggest extending (or rewriting) "my" background jobs app so that it
>>> can make use of both cron jobs and ajax polling. Then the app can choose
>>> the best option out of:
>>> 1) using cron (++)
>>> 2) using some internet cron service (open the page x every y minutes) (+)
>>> 3) long time polling when the users are on the page (-)
>>>
>>> The reasons for my rating: A normal cron job does not rely on the
>>> limitations that apache might have (memory limit, time limit). An
>>> internet cron service has these limitations, but it works 24/7. Option 3
>>> runs only when users are online which is bad if you rely on having
>>> certain tasks done at a given time.
>>>
>>> What do you think?
>>> Regards,
>>>
>>> Jakob
>>>
>>> Am 22.07.2012 17:13, schrieb Alessandro Cosentino:
>>>> I need a cron job system for news app too. The use case is the
>>>> following: if the user doesn't check the reader for a long time, he
>>>> might miss some items that might have been in the feed and then been
>>>> removed. This happens with feeds that have frequent updates.
>>>>
>>>> I know that Jakob is working on this.
>>>>
>>>> Alessandro
>>>>
>>>> On Sun, Jul 22, 2012 at 9:00 AM, Georg Ehrke
>>>> <ownclouddev at georgswebsite.de> wrote:
>>>>> Hi all,
>>>>> I was just wondering if someone is working on a kind of cronjob
>>>>> system for ownCloud.
>>>>> I know that there is the background job app by Jakob, but this app
>>>>> requires an entry in the crontab file.
>>>>> I am currently working on remote calendars and it would be quite
>>>>> useful to have a cron job system, to automatically update the remote
>>>>> calendars.
>>>>> It would actually work without a cronjob system, if you update them
>>>>> if the user is using the calendar, but a cronjob system would make it
>>>>> more comfortable.
>>>>>
>>>>> But there are some planned features, that wouldn't work without a
>>>>> cronjob system.
>>>>> An Example would be an automatic e-mail reminder before an event starts.
>>>>>
>>>>> Does anybody has a clue on how I could solve this problem without
>>>>> making an entry in the crontab file a hard dependency?
>>>>>
>>>>> Cheers,
>>>>> Georg Ehrke
>>>>> _______________________________________________
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