#!/usr/bin/env python # Copyright (C) 2014 Yahoo! Inc. All Rights Reserved. # # Licensed under the Apache License, Version 2.0 (the "License"); you may # not use this file except in compliance with the License. You may obtain # a copy of the License at # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the # License for the specific language governing permissions and limitations # under the License. import optparse import os import sys top_dir = os.path.abspath(os.path.join(os.path.dirname(__file__), os.pardir)) sys.path.insert(0, top_dir) import pydot from ironic.common import states def print_header(text): print("*" * len(text)) print(text) print("*" * len(text)) def map_color(text): # If the text contains 'error'/'fail' then we'll return red... if 'error' in text or 'fail' in text: return 'red' else: return None def format_state(state): # Changes a state (mainly NOSTATE which is the None object) into # a nicer string... if state == states.NOSTATE: state = 'no-state' return state def main(): parser = optparse.OptionParser() parser.add_option("-f", "--file", dest="filename", help="write output to FILE", metavar="FILE") parser.add_option("-T", "--format", dest="format", help="output in given format (default: png)", default='png') parser.add_option("--no-labels", dest="labels", help="do not include labels", action='store_false', default=True) (options, args) = parser.parse_args() if options.filename is None: options.filename = 'states.%s' % options.format source = states.machine graph_name = '"Ironic states"' g = pydot.Dot(graph_name=graph_name, rankdir='LR', nodesep='0.25', overlap='false', ranksep="0.5", splines='true', ordering='in') node_attrs = { 'fontsize': '11', } nodes = {} for (start_state, on_event, end_state) in source: start_state = format_state(start_state) end_state = format_state(end_state) if start_state not in nodes: start_node_attrs = node_attrs.copy() text_color = map_color(start_state) if text_color: start_node_attrs['fontcolor'] = text_color nodes[start_state] = pydot.Node(start_state, **start_node_attrs) g.add_node(nodes[start_state]) if end_state not in nodes: end_node_attrs = node_attrs.copy() text_color = map_color(end_state) if text_color: end_node_attrs['fontcolor'] = text_color nodes[end_state] = pydot.Node(end_state, **end_node_attrs) g.add_node(nodes[end_state]) edge_attrs = {} if options.labels: edge_attrs['label'] = "on_%s" % on_event edge_color = map_color(on_event) if edge_color: edge_attrs['fontcolor'] = edge_color g.add_edge(pydot.Edge(nodes[start_state], nodes[end_state], **edge_attrs)) print_header(graph_name) print(g.to_string().strip()) g.write(options.filename, format=options.format) print_header("Created %s at '%s'" % (options.format, options.filename)) # To make the svg more pretty use the following: # $ xsltproc ../diagram-tools/notugly.xsl ./states.svg > pretty-states.svg # Get diagram-tools from https://github.com/vidarh/diagram-tools.git if __name__ == '__main__': main()