def _submit(self):
schedule_file = StringIO(self.input_area.toPlainText())
try:
graph = generate_serializability_graph(schedule_file)
except ParseError as error:
QtGui.QMessageBox(QtGui.QMessageBox.Warning, 'Parse error',
str(error)).exec_()
return
finally:
schedule_file.close()
is_conflict_serializable = (
networkx.algorithms.simple_cycles(
networkx.from_pydot(graph)) == [])
self.conflict_serializable_label.setText(
'This schedule is{0} conflict serializable.'.format(
'' if is_conflict_serializable else ' not'))
self.output_area.load(QtCore.QByteArray(
graph.create(prog='dot', # default
format='svg')))
def main(argv):
# Parse arguments.
arg_parser = argparse.ArgumentParser(
description='Generate serializabilty graphs.')
arg_parser.add_argument(
'input_file', metavar='INPUT_FILE', help='File containing schedule.',
type=argparse.FileType('r'))
arg_parser.add_argument(
'output_file', metavar='OUTPUT_FILE',
help='Output image file to contain the graph.')
args = arg_parser.parse_args()
graph = generate_serializability_graph(args.input_file)
# Done with the input file.
args.input_file.close()
# Get format based upon extension.
extension = os.path.splitext(args.output_file)[1][1:]
graph.write(args.output_file,
prog='dot', # default
format=extension)
