Custom task metadata

[mle...@gmail.com]

Hi,

I am using doit for my bioinformatics project. To get an overview about my tasks, I have written a script that loads the tasks using `doit.loader.load_tasks()` and creates a dot graph from them (I know there is doit-graph, but I need to avoid the external dependency of the graphviz libs and use pydot instead).

But I generate some (sub-)tasks automatically and just printing the graph of all tasks gives a too large and confusing graph. So I want to add metadata to my tasks that can be read by my graphing script with information like for example:

 * A short task description

 * Which subgraph the task belongs to

 * That this task should be conflated with certain other tasks to a group that only appears as one node

 * graphviz options, like "rank", color, style etc.

So I need a way to store information in the tasks that is not used by doit but still retained in the task objects. How is this possible?

 Option 1: Is there some field in the Task definition that I am not aware of, like

def task_example:

  return {

    "action" : "my_script args...",

    "metadata" : { "dot_rank" : 3 } }

Option 2: Can I change doit so that it does not generate `doit.Task` object, but a subclass that I create and that has a field for this metadata? How can that be done?

Cheers,

Moritz

[schettino72]

On Friday, October 8, 2021 at 12:16:21 AM UTC+8 mle...@gmail.com wrote:

 Option 1: Is there some field in the Task definition that I am not aware of, like

def task_example:

  return {

    "action" : "my_script args...",

    "metadata" : { "dot_rank" : 3 } }

This one.. I want to add this since long time.

Can you provide a pull-request?

Should be trivial as doit will just ignore it.

Maybe include the output on `info` command. But not required, just add the code you need.

Regards