Source code for galaxy.workflow.schedulers

""" Module containing Galaxy workflow scheduling plugins. Galaxy's interface
for workflow scheduling is highly experimental and the interface required for
scheduling plugins will almost certainly change.
"""
from abc import (
    ABCMeta,
    abstractmethod
)


[docs]class WorkflowSchedulingPlugin(metaclass=ABCMeta): """ A plugin defining how Galaxy should schedule plugins. By default plugins are passive and should monitor Galaxy's work queue for WorkflowRequests. Inherit from ActiveWorkflowSchedulingPlugin instead if the scheduling plugin should be forced (i.e. if scheduling happen all at once or the request will be stored and monitored outside of Galaxy.) """ @property @abstractmethod def plugin_type(self): """ Short string providing labelling this plugin """
[docs] def startup(self, app): """ Called when Galaxy starts up if the plugin is enabled. """
[docs] def shutdown(self): """ Called when Galaxy is shutting down, workflow scheduling should end. """
[docs]class ActiveWorkflowSchedulingPlugin(WorkflowSchedulingPlugin, metaclass=ABCMeta):
[docs] @abstractmethod def schedule(self, workflow_invocation): """ Optionally return one or more commands to instrument job. These commands will be executed on the compute server prior to the job running. """