Is there an API/mechanism for querying progress?

[xz-stjude]

I have a program that starts Nextflow pipeline in the background and attempts to report the current running status to the user in real time. Does Nextflow provide a way for other programs to reliably query its current state? For example - how many processes have fully completed, how many not, etc.? I know that it's possible to pull this info from the log, but it seems fragile doing just string parsing.

[bentsherman]

You can write a trace observer in a plugin that listens for task events and reports them somewhere, like writing to a file or calling a custom API. This is how the nf-tower plugin in Nextflow reports workflow progress to Seqera Platform