Question

cfSchedule

Asked by: CurtinProp

I'd like to create a schedule to run every 30 minutes... using cfschedule, so not through the administrator...

At each schedule I'd like to check my DB to see if the time stored in the DB has expired. For instance, if the difference in minutes between NOW() and #storedDate# is GT 1 then display an error.

I think I can handle the dateDiff stuff but how would I run a CFIF statement using cfschedule?

do I have to write the IF statement in a seperate file and then load the file through the schedule?

If someone can provide me with a basic cfschedule that does something at intervals then i can hack it up and play around. Even a tutorial would do, i cant seem to find any.

Thanks

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Asked On
2009-10-29 at 23:50:32ID24857247
Tags

cfschedule

,

dateDiff

Topic

Cold Fusion Markup Language

Participating Experts
3
Points
500
Comments
7

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Answers

 

by: myselfrandhawaPosted on 2009-10-30 at 06:04:15ID: 25702491

Okay! i expect you are on a shared host. Go to shared Host Control panel. Choose schedular write the name of the file you would like to run after every 30 minutes.

Now create a file like this:

<cfif DateDiff('m',now(),'startdate')>
Error
</cfif>

 

by: SidFishesPosted on 2009-10-30 at 06:39:46ID: 25702806

I think you are not quite grasping the way to use cfschedule...basically it is a programmatic replacement for using cfadmin

(although you can use the "run" attribute to actually run a scheduled item

think of it this way. You use cfschedule to -create- (or modify) your scheduled task. It's your task itself that should be doing the logic

what I would do is create the task in cfadmin or using cfschedule which points to the file

task.cfm

<cfset storedDate = "10/28/2009"> <!--- test value only --->

<cfif datediff("d",storedDate,now()) gt 1>
do something
<cfelse>
wait till next scheduled task and check again

</cfif>  

this way you keep your logic in the task itself


 

by: _agx_Posted on 2009-10-30 at 13:57:36ID: 25706742

Just to add to what was said:

> but how would I run a CFIF statement using cfschedule?

     You don't.  Scheduled tasks are meant to run _without_ user interaction.  So you could set up a task
     to run some .cfm script every 30 minutes (period). Then as SidFishes' said, the code _inside_ your cfm
     page would determine what happens when that page is executed.

> if the difference in minutes ... is GT 1 then display an error.

      You can't display anything from an automated task obviously.  But you can add code to send
      an email, write to a log file, etc...

 

by: CurtinPropPosted on 2009-11-01 at 17:42:13ID: 25716603

Hi guys, cheers for the clarifications.

Sooo If I have a page with my cfschedule in it that I want to run every 30 mins.

Using the CF schedule I call logic.cfm (or whatever) which contains the query and the logic and the update (every 30 mins?).

so something like this?:


cfschedule is inside my page (along with the dynamic content that will get updated every 30 mins)

<cfschedule
   action = (If im calling a file is it update or run?)
   task = "testTask"
   operation = "HTTPRequest"
   path = "path_to_file"
   startDate = "02/11/2009"
   startTime = "00:00:00"
   url = "http://location_of_file/logic.cfm"
   endDate = ""
   interval = "1800"
>


Logic.cfm gets called by the schedule which checks the content and updates accordingly.

How does that sound? Am I barking up the right tree now?

cheers

 

by: CurtinPropPosted on 2009-11-01 at 17:43:35ID: 25716610

Just realized I dont really need "path" in my schedule... but thats ok for now.

 

by: CurtinPropPosted on 2009-11-01 at 18:21:09ID: 25716715

ok guys, got that working.... using cfschedule im calling my external page that runs the query and updates my data automatically..

Thanks for the help...

In regards to points, Im going to distribute them out to all three of you guys? sifFishes will get a bit extra just because he was first to hit the nail on the head in regards to what i was trying to achieve.

thanks again.

 

by: _agx_Posted on 2009-11-01 at 18:23:19ID: 25716728

> cfschedule is inside my page (along with the dynamic content that will get updated every 30 mins)

No.  With recurring tasks, you only _schedule_ them once.  That's starts them running.  Once they're running, you never have to use cfschedule again. Not unless you want to change or stop the task.  

So you need to create a separate page that contains the cfschedule information.  You will only run it once, just to create the task.   All the logic (that should run every 30 minutes) , goes in a separate page 'pageContainingTheLogic.cfm'.   That's the page your task will be executing whenever it runs.


     <cfschedule
           action = "update"
            task = "MyRecurringTask_RunsEvery30Minutes"
            url = "http://location_of_/pageContainingTheLogic.cfm"
         ...... >


Fyi: sometimes it requires a little trial and error to get scheduled tasks working. They're picky about parameters (like can only schedule tasks for a future date,... ) and there's not much debugging. So you may have to play around with it a bit.

> action = (If im calling a file is it update or run?)

  "Update".  IIRC, it will either update the task (if it already exists) or create it if it doesn't.

20120131-EE-VQP-002

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