coworkers

A simple DSL in Prolog to implement workflows as trees of coroutines

example

workflow('release_project', Props) :-

wf(

    props( Props ), module(workflow_module),

        % data exchange between tasks happens through variable unification

        node(dialog('coordinator'),

                   [ node(task('sync git repo', [ParentRepoVersions]), []),

                     node(task('modify parent repo versions', [ParentRepoVersions]), [])

                   ])

).

description

Assuming that:

• tasks and dialogs are available in a user's module workflow_module
• tasks make use of wf_ask_parameter to ask for some input, at whichever stage of completion they are in, before they get resumed
• dialogs make use of wf_input_parameter to augment the actual workflow's known props, and get called only when required

  the defined workflow resembles that of some coworkers in an office.

current limitations

• tasks under a dialog get called sequentially
• workflows are not persistent