from __future__ import print_function import argparse import cgi import datetime import json import pydot import urllib2 # Copyright 2014-2016 OpenMarket Ltd # # 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. def make_name(pdu_id, origin): return "%s@%s" % (pdu_id, origin) def make_graph(pdus, room, filename_prefix): pdu_map = {} node_map = {} origins = set() colors = {"red", "green", "blue", "yellow", "purple"} for pdu in pdus: origins.add(pdu.get("origin")) color_map = {color: color for color in colors if color in origins} colors -= set(color_map.values()) color_map[None] = "black" for o in origins: if o in color_map: continue try: c = colors.pop() color_map[o] = c except Exception: print("Run out of colours!") color_map[o] = "black" graph = pydot.Dot(graph_name="Test") for pdu in pdus: name = make_name(pdu.get("pdu_id"), pdu.get("origin")) pdu_map[name] = pdu t = datetime.datetime.fromtimestamp(float(pdu["ts"]) / 1000).strftime( "%Y-%m-%d %H:%M:%S,%f" ) label = ( "<" "%(name)s
" "Type: %(type)s
" "State key: %(state_key)s
" "Content: %(content)s
" "Time: %(time)s
" "Depth: %(depth)s
" ">" ) % { "name": name, "type": pdu.get("pdu_type"), "state_key": pdu.get("state_key"), "content": cgi.escape(json.dumps(pdu.get("content")), quote=True), "time": t, "depth": pdu.get("depth"), } node = pydot.Node(name=name, label=label, color=color_map[pdu.get("origin")]) node_map[name] = node graph.add_node(node) for pdu in pdus: start_name = make_name(pdu.get("pdu_id"), pdu.get("origin")) for i, o in pdu.get("prev_pdus", []): end_name = make_name(i, o) if end_name not in node_map: print("%s not in nodes" % end_name) continue edge = pydot.Edge(node_map[start_name], node_map[end_name]) graph.add_edge(edge) # Add prev_state edges, if they exist if pdu.get("prev_state_id") and pdu.get("prev_state_origin"): prev_state_name = make_name( pdu.get("prev_state_id"), pdu.get("prev_state_origin") ) if prev_state_name in node_map: state_edge = pydot.Edge( node_map[start_name], node_map[prev_state_name], style="dotted" ) graph.add_edge(state_edge) graph.write("%s.dot" % filename_prefix, format="raw", prog="dot") # graph.write_png("%s.png" % filename_prefix, prog='dot') graph.write_svg("%s.svg" % filename_prefix, prog="dot") def get_pdus(host, room): transaction = json.loads( urllib2.urlopen( "http://%s/_matrix/federation/v1/context/%s/" % (host, room) ).read() ) return transaction["pdus"] if __name__ == "__main__": parser = argparse.ArgumentParser( description="Generate a PDU graph for a given room by talking " "to the given homeserver to get the list of PDUs. \n" "Requires pydot." ) parser.add_argument( "-p", "--prefix", dest="prefix", help="String to prefix output files with" ) parser.add_argument("host") parser.add_argument("room") args = parser.parse_args() host = args.host room = args.room prefix = args.prefix if args.prefix else "%s_graph" % (room) pdus = get_pdus(host, room) make_graph(pdus, room, prefix)