def create(parameter_val, value):
workflow = parameter_val.wf_module.workflow
pspec = parameter_val.parameter_spec
# We don't create a Delta for derived_data parameter. Such parameters are essentially caches,
# (e.g. chart output image) and are created either during module render() or in the front end
# Instead, we just set the value -- and trust that undo-ing the other parameters will also set
# the derived_data parameters.
if pspec.derived_data:
parameter_val.set_value(value)
return None
# Not derived data, we're doing this.
description = \
'Changed parameter \'' + pspec.name + '\' of \'' + parameter_val.wf_module.module_version.module.name + '\' module'
delta = ChangeParameterCommand.objects.create(
parameter_val=parameter_val,
new_value=value,
old_value=parameter_val.get_value(),
workflow=workflow,
command_description=description)
delta.forward()
# increment workflow version number, triggers global re-render if this parameter can effect output
notify = not pspec.ui_only
if notify:
notify_client_workflow_version_changed(workflow)
return delta
def create(wf_module):
description = 'Deleted \'' + wf_module.module_version.module.name + '\' module'
workflow = wf_module.workflow # about to be set to null, so save it
delta = DeleteModuleCommand.objects.create(
workflow=workflow,
wf_module=wf_module,
command_description=description)
delta.forward()
notify_client_workflow_version_changed(workflow)
return delta
def save_data_if_changed(wfm, new_data, auto_change_version=True):
wfm.last_update_check = timezone.now()
wfm.save()
# Check if currently saved data is any different. If so create a new data version and maybe switch to it
old_data = wfm.retrieve_data()
if new_data != old_data:
version = wfm.store_data(new_data)
if auto_change_version:
ChangeDataVersionCommand.create(wfm, version) # also notifies client
else:
# no new data version, but we still want client to update WfModule status and last update check time
notify_client_workflow_version_changed(wfm.workflow)
def create(wf_module, version):
description = \
'Changed \'' + wf_module.module_version.module.name + '\' module data version to ' + str(version)
delta = ChangeDataVersionCommand.objects.create(
wf_module=wf_module,
new_version=version,
old_version=wf_module.get_stored_data_version(),
workflow=wf_module.workflow,
command_description=description)
delta.forward()
notify_client_workflow_version_changed(wf_module.workflow)
return delta
def create(workflow, module_version, insert_before):
newwfm = WfModule.objects.create(workflow=None, module_version=module_version,
order=insert_before, is_collapsed=False)
newwfm.create_default_parameters()
description = 'Added \'' + module_version.module.name + '\' module'
delta = AddModuleCommand.objects.create(
workflow=workflow,
wf_module=newwfm,
order=insert_before,
command_description=description)
delta.forward()
notify_client_workflow_version_changed(workflow)
return delta
def create(wf_module, notes):
old_value = wf_module.notes if wf_module.notes else ''
description = 'Changed workflow module note from ' + old_value + ' to ' + notes
delta = ChangeWfModuleNotesCommand.objects.create(
workflow = wf_module.workflow,
wf_module = wf_module,
new_value = notes,
old_value = old_value,
command_description = description
)
delta.forward()
notify_client_workflow_version_changed(wf_module.workflow)
return delta
def create(workflow, name):
old_name = workflow.name
description = 'Changed workflow name from ' + old_name + ' to ' + name
delta = ChangeWorkflowTitleCommand.objects.create(
workflow = workflow,
new_value = name,
old_value = workflow.name,
command_description = description
)
delta.forward()
notify_client_workflow_version_changed(workflow)
return delta