How to pass an object reference to handle_delete? [closed]

asked 2014-09-02 04:02:58 -0500

my_openstack_username gravatar image

updated 2014-09-04 03:05:58 -0500

Regarding Heat resource plugins, as far as i can tell, handle_delete method is called in a different instance of the resource class than handle_create?

If this is correct, how could i pass a reference to an instance of another class (or the Python equivalent) to this method? I’ve tried through data_set()/data().get() to no avail.

Reason for this is because my handle_create creates a thread with some process, that I should then terminate through handle_delete.


Does Heat provide some mechanism for plug-ins to run some code periodically?


There are currently two ways of having a Heat resource run something periodically:

  • Have a Ceilometer alarm, that always evaluates as true, repeatedly signal the resource and have the code called by handle_signal
  • Create an instance and run the code as a cron job on it.

The existing periodic task mechanism within Heat is deprecated and should not be used.

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Closed for the following reason the question is answered, right answer was accepted by larsks
close date 2014-09-04 08:12:36.839295


I don't think Heat plugins are meant to maintain state like this. Someone should be able to restart the Heat engine without affecting any running stacks.

larsks gravatar imagelarsks ( 2014-09-03 21:28:10 -0500 )edit

You may want to try asking the same thing in #heat on Freenode, where the heat devs hang out.

larsks gravatar imagelarsks ( 2014-09-03 21:31:34 -0500 )edit

@larsks Thanks, I did that and updated the question with the answers.

my_openstack_username gravatar imagemy_openstack_username ( 2014-09-04 03:07:31 -0500 )edit