154 lines
		
	
	
		
			4.2 KiB
		
	
	
	
		
			Python
		
	
	
			
		
		
	
	
			154 lines
		
	
	
		
			4.2 KiB
		
	
	
	
		
			Python
		
	
	
# Copyright 2016 OpenMarket Ltd
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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#     http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import pydot
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import cgi
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import simplejson as json
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import datetime
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import argparse
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from synapse.events import FrozenEvent
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from synapse.util.frozenutils import unfreeze
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from six import string_types
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def make_graph(file_name, room_id, file_prefix, limit):
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    print "Reading lines"
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    with open(file_name) as f:
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        lines = f.readlines()
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    print "Read lines"
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    events = [FrozenEvent(json.loads(line)) for line in lines]
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    print "Loaded events."
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    events.sort(key=lambda e: e.depth)
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    print "Sorted events"
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    if limit:
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        events = events[-int(limit):]
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    node_map = {}
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    graph = pydot.Dot(graph_name="Test")
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    for event in events:
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        t = datetime.datetime.fromtimestamp(
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            float(event.origin_server_ts) / 1000
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        ).strftime('%Y-%m-%d %H:%M:%S,%f')
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        content = json.dumps(unfreeze(event.get_dict()["content"]), indent=4)
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        content = content.replace("\n", "<br/>\n")
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        print content
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        content = []
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        for key, value in unfreeze(event.get_dict()["content"]).items():
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            if value is None:
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                value = "<null>"
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            elif isinstance(value, string_types):
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                pass
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            else:
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                value = json.dumps(value)
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            content.append(
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                "<b>%s</b>: %s," % (
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                    cgi.escape(key, quote=True).encode("ascii", 'xmlcharrefreplace'),
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                    cgi.escape(value, quote=True).encode("ascii", 'xmlcharrefreplace'),
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                )
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            )
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        content = "<br/>\n".join(content)
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        print content
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        label = (
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            "<"
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            "<b>%(name)s </b><br/>"
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            "Type: <b>%(type)s </b><br/>"
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            "State key: <b>%(state_key)s </b><br/>"
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            "Content: <b>%(content)s </b><br/>"
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            "Time: <b>%(time)s </b><br/>"
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            "Depth: <b>%(depth)s </b><br/>"
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            ">"
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        ) % {
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            "name": event.event_id,
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            "type": event.type,
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            "state_key": event.get("state_key", None),
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            "content": content,
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            "time": t,
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            "depth": event.depth,
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        }
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        node = pydot.Node(
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            name=event.event_id,
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            label=label,
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        )
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        node_map[event.event_id] = node
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        graph.add_node(node)
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    print "Created Nodes"
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    for event in events:
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        for prev_id, _ in event.prev_events:
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            try:
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                end_node = node_map[prev_id]
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            except:
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                end_node = pydot.Node(
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                    name=prev_id,
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                    label="<<b>%s</b>>" % (prev_id,),
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                )
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                node_map[prev_id] = end_node
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                graph.add_node(end_node)
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            edge = pydot.Edge(node_map[event.event_id], end_node)
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            graph.add_edge(edge)
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    print "Created edges"
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    graph.write('%s.dot' % file_prefix, format='raw', prog='dot')
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    print "Created Dot"
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    graph.write_svg("%s.svg" % file_prefix, prog='dot')
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    print "Created svg"
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if __name__ == "__main__":
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    parser = argparse.ArgumentParser(
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        description="Generate a PDU graph for a given room by reading "
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                    "from a file with line deliminated events. \n"
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                    "Requires pydot."
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    )
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    parser.add_argument(
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        "-p", "--prefix", dest="prefix",
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        help="String to prefix output files with",
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        default="graph_output"
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    )
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    parser.add_argument(
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        "-l", "--limit",
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        help="Only retrieve the last N events.",
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    )
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    parser.add_argument('event_file')
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    parser.add_argument('room')
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    args = parser.parse_args()
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    make_graph(args.event_file, args.room, args.prefix, args.limit)
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