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Matthew Hodgson
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# Copyright 2014 OpenMarket Ltd
Matthew Hodgson
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#
# 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.
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import sqlite3
import pydot
import cgi
import json
import datetime
import argparse
import urllib2
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 = set(("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:
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 = (
"<"
"<b>%(name)s </b><br/>"
"Type: <b>%(type)s </b><br/>"
"State key: <b>%(state_key)s </b><br/>"
"Content: <b>%(content)s </b><br/>"
"Time: <b>%(time)s </b><br/>"
"Depth: <b>%(depth)s </b><br/>"
">"
) % {
"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(
Matthew Hodgson
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"http://%s/_matrix/federation/v1/context/%s/" % (host, room)
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).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)