Finished signal from workflow

[cni-md]

I "wrote" (copy&paste from algorithms.misc AddCSVRow) a mail class to send me the output of my pipeline per mail.
nipype-mail

If I attach the output of my last Node (mail.inputs.arbitrary_name = '/path_to/file') I get the mail when the calculation is done, but without any attachment the mail Node is called immediately and I get the Mail at the beginning of the calculation :-)

Is it possible to get a "signal" like error code from the workflow when done to trigger the mail without attaching garbage from the last Node?

Joerg

PS: Line 106 outputs['msg'] = self.msg.as_bytes() is Python3 code. For Python2 is has to be changed to self.msg.as_string()

[effigies]

Not as currently written, but there's no reason you couldn't in principle write something like the following:

class WorkflowWithCallbacks(Workflows):
    on_finish = lambda *args, **kwargs: None
    def run(self, *args, **kwargs):
        super().run(*args, **kwargs)
        self.on_finish()

We're currently working on rearchitecting the workflow engine, so I don't think it's likely we'll put any effort into supporting this in the current architecture. However, I'll keep this in mind as we move forward with Nipype 2.0.

[satra]

there is a status_callback option, that applies to nodes, and should in nipype 2.0 therefore apply to workflows as well. but let's keep this under the reporting section of nipype 2.0