Uniqueness of IOM objects

If I retrieve a variable repeatedly, I seem to get distinct Python objects that know nothing about each other or the server state. I can call replaceOnServer() to "push" state changes to the server, but I don't offhand see a way to "pull" (update) state from the server into an existing object, nor a way to get notified of server state changes to know to update my plugin state accordingly:

Code: Select all

Connected to Indigo Server 5.0.0 b5 (localhost:1176)
>>> v=indigo.variable.create("test", value="old")
>>> v1=indigo.variables[v.id]
>>> v1==v
False
>>> v.value
u'old'
>>> v1.value
u'old'
>>> v.value = "new"
>>> v.replaceOnServer()
>>> v1.value
u'old'
>>> v1.replaceOnServer()
>>> v.value
u'new'


How do you suggest we handle this? It seems to make it difficult to keep and track server state in a plugin. If I want a single Python IOM object to track server state as it evolves, how would I go about doing that?

Thanks
-- perry

[jay (support)]

Code: Select all

v.refreshFromServer()

refreshFromServer() works on any of the server IOM objects. It's in various example sections but it appears I've yet to add it to the method lists - I'll get it added today.

refreshFromServer() works on any of the server IOM objects. It's in various example sections but it appears I've yet to add it to the method lists - I'll get it added today.

Good. So is there a Pythonic way to get notified when an existing IOM object's server state has changed? Or do I need to set up temporary triggers for each of these cases (and clean them up, and recover from problems, etc.)? This really is begging for a facility that does not require database changes to work...

Cheers
-- perry

[matt (support)]

You can subscribe to all device changes with indigo.devices.subscribeToChanges(), described here and here, which will have the server forward all device changes to your plugin by calling the following methods in your plugin (if you define them): deviceCreated, deviceUpdated, deviceDeleted. You can also call the same method on the triggers and variables lists if you want to be notified of changes to them.

You can subscribe to all device changes with indigo.devices.subscribeToChanges(), described here and here, which will have the server forward all device changes to your plugin by calling the following methods in your plugin (if you define them): deviceCreated, deviceUpdated, deviceDeleted. You can also call the same method on the triggers and variables lists if you want to be notified of changes to them.

Excellent; just what I was looking for. And I understand the associated performance issues.

Thanks
-- perry