def Duplicate(port_in, **kw): # pylint: disable=C0103
"""
Creates a message duplicator and connects its secondary output port to the
given input port.
"""
ctx = Context.top()
template = DuplicatorTemplate(destination=port_in)
parser = ComponentParser()
operations = list(parser.divert(template.apply()))
process = parser.get_component()
if 'alias' in kw:
operations.append(AddTokenOp(AliasToken(process, kw['alias'])))
if 'label' in kw:
operations.append(AddTokenOp(LabelToken(process, kw['label'])))
if 'description' in kw:
operations.append(AddTokenOp(DescriptionToken(process, kw['description'])))
if 'partition' in kw:
operations.append(AddTokenOp(PartitionToken(process, kw['partition'])))
ctx.tokens.extend(operations)
return process
def Chain(name, *procs, **kw): # pylint: disable=C0103
"""
Forms a chain of the given components by connecting the default input port
to the default output port of its predecessor.
"""
ctx = Context.top()
template = ChainTemplate(chain=procs)
parser = ComponentParser()
operations = list(parser.divert(template.apply()))
process = parser.get_component()
operations.append(AddTokenOp(LabelToken(process, name)))
operations.append(AddTokenOp(AliasToken(process, name)))
if 'description' in kw:
operations.append(AddTokenOp(DescriptionToken(process, kw['description'])))
if 'partition' in kw:
operations.append(AddTokenOp(PartitionToken(process, kw['partition'])))
ctx.tokens.extend(operations)
return process
