Observer on tasks.

[Arman Ohanian]

Hi,

Is it possible to register observer objects on the tasks, say for GUI implementation?

Say we want to to have a GUI that can display the state of the task as the tasks are executing (Or send status to time-series database, etc)

We have long running processes and we need to monitor them.  

Please advise.

Thanks,

-Arman.

[Eduardo Schettino]

On Thu, Aug 31, 2017 at 6:24 PM, Arman Ohanian <arman....@gmail.com> wrote:

Hi,

Is it possible to register observer objects on the tasks, say for GUI implementation?

This is something I really would like to implement but would take considerable time,

so never tackled it...

 

Say we want to to have a GUI that can display the state of the task as the tasks are executing (Or send status to time-series database, etc)

Custom reporters is your friend. The idea is that you could output a structured format that would be fed into a process

that can process them and update a GUI or send status to a DB.

So to implement a GUI you would not need any change in doit core.

 

We have long running processes and we need to monitor them.  

Please advise.

Thanks,

-Arman.

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[Arman Ohanian]

Thanks.  

I will check out the customer reporter.

However, if I understand this correctly, I have to generate a file and prompt to GUI to update.  Is that correct?

What I like to do is something like.

#Say t is a task object.


o1 = TaskObserver()

t.attach(o1)


# Now,for each event, from within the objects' notify method, say...
    o1.update(event='start')
# or
    o1.update(status='running')

I hope that makes sense.   :)

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[Eduardo Schettino]

On Thursday, August 31, 2017, Arman Ohanian <arman....@gmail.com> wrote:

Thanks.  

I will check out the customer reporter.

However, if I understand this correctly, I have to generate a file and prompt to GUI to update.  Is that correct?

What I like to do is something like.

#Say t is a task object.


o1 = TaskObserver()

t.attach(o1)


# Now,for each event, from within the objects' notify method, say...
    o1.update(event='start')
# or
    o1.update(status='running')

I hope that makes sense.   :)

uhmm. no idea what is this code... :P 

Actually I was planning to work on a GUI by the end of the year, but not open source ...

On Thursday, August 31, 2017 at 9:47:18 AM UTC-5, schettino72 wrote:

On Thu, Aug 31, 2017 at 6:24 PM, Arman Ohanian <arman....@gmail.com> wrote:

Hi,

Is it possible to register observer objects on the tasks, say for GUI implementation?

This is something I really would like to implement but would take considerable time,

so never tackled it...

 

Say we want to to have a GUI that can display the state of the task as the tasks are executing (Or send status to time-series database, etc)

Custom reporters is your friend. The idea is that you could output a structured format that would be fed into a process

that can process them and update a GUI or send status to a DB.

So to implement a GUI you would not need any change in doit core.

 

We have long running processes and we need to monitor them.  

Please advise.

Thanks,

-Arman.

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[Arman Ohanian]

Oh, I didn't mean you should add a GUI.

I meant to make the 'Task' observable.

There is a python example here:

https://en.wikipedia.org/wiki/Observer_pattern#Example

In effect, if you have a way to do a pre-exec/exec/post-exec, it would work for my purpose too.

I think we can have multiple actions in the "actions" key and mimic the functionality, right?