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# Copyright 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.
import pydot
import cgi
import simplejson as json
import datetime
import argparse
from synapse.events import FrozenEvent
from synapse.util.frozenutils import unfreeze
from six import string_types
def make_graph(file_name, room_id, file_prefix, limit):
print "Reading lines"
with open(file_name) as f:
lines = f.readlines()
print "Read lines"
events = [FrozenEvent(json.loads(line)) for line in lines]
print "Loaded events."
events.sort(key=lambda e: e.depth)
print "Sorted events"
if limit:
events = events[-int(limit):]
node_map = {}
graph = pydot.Dot(graph_name="Test")
for event in events:
t = datetime.datetime.fromtimestamp(
float(event.origin_server_ts) / 1000
).strftime('%Y-%m-%d %H:%M:%S,%f')
content = json.dumps(unfreeze(event.get_dict()["content"]), indent=4)
content = content.replace("\n", "<br/>\n")
print content
content = []
for key, value in unfreeze(event.get_dict()["content"]).items():
if value is None:
value = "<null>"
elif isinstance(value, string_types):
pass
else:
value = json.dumps(value)
content.append(
"<b>%s</b>: %s," % (
cgi.escape(key, quote=True).encode("ascii", 'xmlcharrefreplace'),
cgi.escape(value, quote=True).encode("ascii", 'xmlcharrefreplace'),
)
)
content = "<br/>\n".join(content)
print content
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": event.event_id,
"type": event.type,
"state_key": event.get("state_key", None),
"content": content,
"time": t,
"depth": event.depth,
}
node = pydot.Node(
name=event.event_id,
label=label,
)
node_map[event.event_id] = node
graph.add_node(node)
print "Created Nodes"
for event in events:
for prev_id, _ in event.prev_events:
try:
end_node = node_map[prev_id]
except:
end_node = pydot.Node(
name=prev_id,
label="<<b>%s</b>>" % (prev_id,),
)
node_map[prev_id] = end_node
graph.add_node(end_node)
edge = pydot.Edge(node_map[event.event_id], end_node)
graph.add_edge(edge)
print "Created edges"
graph.write('%s.dot' % file_prefix, format='raw', prog='dot')
print "Created Dot"
graph.write_svg("%s.svg" % file_prefix, prog='dot')
print "Created svg"
if __name__ == "__main__":
parser = argparse.ArgumentParser(
description="Generate a PDU graph for a given room by reading "
"from a file with line deliminated events. \n"
"Requires pydot."
)
parser.add_argument(
"-p", "--prefix", dest="prefix",
help="String to prefix output files with",
default="graph_output"
)
parser.add_argument(
"-l", "--limit",
help="Only retrieve the last N events.",
)
parser.add_argument('event_file')
parser.add_argument('room')
args = parser.parse_args()
make_graph(args.event_file, args.room, args.prefix, args.limit)
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