Remove `contrib/experiments/test_messaging.py` (#12911)

2 files changed, 1 insertions, 367 deletions

diff --git a/changelog.d/12911.removal b/changelog.d/12911.removal
new file mode 100644
index 0000000000..5178cd6532
--- /dev/null
+++ b/changelog.d/12911.removal
@@ -0,0 +1 @@
+Remove unused `contrib/experiements/test_messaging.py` script. This fails to run on Python 3.
diff --git a/contrib/experiments/test_messaging.py b/contrib/experiments/test_messaging.py
deleted file mode 100644
index 31b8a68225..0000000000
--- a/contrib/experiments/test_messaging.py
+++ /dev/null
@@ -1,367 +0,0 @@
-# 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.
-
-
-""" This is an example of using the server to server implementation to do a
-basic chat style thing. It accepts commands from stdin and outputs to stdout.
-
-It assumes that ucids are of the form <user>@<domain>, and uses <domain> as
-the address of the remote home server to hit.
-
-Usage:
-    python test_messaging.py <port>
-
-Currently assumes the local address is localhost:<port>
-
-"""
-
-
-import argparse
-import curses.wrapper
-import json
-import logging
-import os
-import re
-
-import cursesio
-
-from twisted.internet import defer, reactor
-from twisted.python import log
-
-from synapse.app.homeserver import SynapseHomeServer
-from synapse.federation import ReplicationHandler
-from synapse.federation.units import Pdu
-from synapse.util import origin_from_ucid
-
-# from synapse.logging.utils import log_function
-
-
-logger = logging.getLogger("example")
-
-
-def excpetion_errback(failure):
-    logging.exception(failure)
-
-
-class InputOutput:
-    """This is responsible for basic I/O so that a user can interact with
-    the example app.
-    """
-
-    def __init__(self, screen, user):
-        self.screen = screen
-        self.user = user
-
-    def set_home_server(self, server):
-        self.server = server
-
-    def on_line(self, line):
-        """This is where we process commands."""
-
-        try:
-            m = re.match(r"^join (\S+)$", line)
-            if m:
-                # The `sender` wants to join a room.
-                (room_name,) = m.groups()
-                self.print_line("%s joining %s" % (self.user, room_name))
-                self.server.join_room(room_name, self.user, self.user)
-                # self.print_line("OK.")
-                return
-
-            m = re.match(r"^invite (\S+) (\S+)$", line)
-            if m:
-                # `sender` wants to invite someone to a room
-                room_name, invitee = m.groups()
-                self.print_line("%s invited to %s" % (invitee, room_name))
-                self.server.invite_to_room(room_name, self.user, invitee)
-                # self.print_line("OK.")
-                return
-
-            m = re.match(r"^send (\S+) (.*)$", line)
-            if m:
-                # `sender` wants to message a room
-                room_name, body = m.groups()
-                self.print_line("%s send to %s" % (self.user, room_name))
-                self.server.send_message(room_name, self.user, body)
-                # self.print_line("OK.")
-                return
-
-            m = re.match(r"^backfill (\S+)$", line)
-            if m:
-                # we want to backfill a room
-                (room_name,) = m.groups()
-                self.print_line("backfill %s" % room_name)
-                self.server.backfill(room_name)
-                return
-
-            self.print_line("Unrecognized command")
-
-        except Exception as e:
-            logger.exception(e)
-
-    def print_line(self, text):
-        self.screen.print_line(text)
-
-    def print_log(self, text):
-        self.screen.print_log(text)
-
-
-class IOLoggerHandler(logging.Handler):
-    def __init__(self, io):
-        logging.Handler.__init__(self)
-        self.io = io
-
-    def emit(self, record):
-        if record.levelno < logging.WARN:
-            return
-
-        msg = self.format(record)
-        self.io.print_log(msg)
-
-
-class Room:
-    """Used to store (in memory) the current membership state of a room, and
-    which home servers we should send PDUs associated with the room to.
-    """
-
-    def __init__(self, room_name):
-        self.room_name = room_name
-        self.invited = set()
-        self.participants = set()
-        self.servers = set()
-
-        self.oldest_server = None
-
-        self.have_got_metadata = False
-
-    def add_participant(self, participant):
-        """Someone has joined the room"""
-        self.participants.add(participant)
-        self.invited.discard(participant)
-
-        server = origin_from_ucid(participant)
-        self.servers.add(server)
-
-        if not self.oldest_server:
-            self.oldest_server = server
-
-    def add_invited(self, invitee):
-        """Someone has been invited to the room"""
-        self.invited.add(invitee)
-        self.servers.add(origin_from_ucid(invitee))
-
-
-class HomeServer(ReplicationHandler):
-    """A very basic home server implentation that allows people to join a
-    room and then invite other people.
-    """
-
-    def __init__(self, server_name, replication_layer, output):
-        self.server_name = server_name
-        self.replication_layer = replication_layer
-        self.replication_layer.set_handler(self)
-
-        self.joined_rooms = {}
-
-        self.output = output
-
-    def on_receive_pdu(self, pdu):
-        """We just received a PDU"""
-        pdu_type = pdu.pdu_type
-
-        if pdu_type == "sy.room.message":
-            self._on_message(pdu)
-        elif pdu_type == "sy.room.member" and "membership" in pdu.content:
-            if pdu.content["membership"] == "join":
-                self._on_join(pdu.context, pdu.state_key)
-            elif pdu.content["membership"] == "invite":
-                self._on_invite(pdu.origin, pdu.context, pdu.state_key)
-        else:
-            self.output.print_line(
-                "#%s (unrec) %s = %s"
-                % (pdu.context, pdu.pdu_type, json.dumps(pdu.content))
-            )
-
-    def _on_message(self, pdu):
-        """We received a message"""
-        self.output.print_line(
-            "#%s %s %s" % (pdu.context, pdu.content["sender"], pdu.content["body"])
-        )
-
-    def _on_join(self, context, joinee):
-        """Someone has joined a room, either a remote user or a local user"""
-        room = self._get_or_create_room(context)
-        room.add_participant(joinee)
-
-        self.output.print_line("#%s %s %s" % (context, joinee, "*** JOINED"))
-
-    def _on_invite(self, origin, context, invitee):
-        """Someone has been invited"""
-        room = self._get_or_create_room(context)
-        room.add_invited(invitee)
-
-        self.output.print_line("#%s %s %s" % (context, invitee, "*** INVITED"))
-
-        if not room.have_got_metadata and origin is not self.server_name:
-            logger.debug("Get room state")
-            self.replication_layer.get_state_for_context(origin, context)
-            room.have_got_metadata = True
-
-    @defer.inlineCallbacks
-    def send_message(self, room_name, sender, body):
-        """Send a message to a room!"""
-        destinations = yield self.get_servers_for_context(room_name)
-
-        try:
-            yield self.replication_layer.send_pdu(
-                Pdu.create_new(
-                    context=room_name,
-                    pdu_type="sy.room.message",
-                    content={"sender": sender, "body": body},
-                    origin=self.server_name,
-                    destinations=destinations,
-                )
-            )
-        except Exception as e:
-            logger.exception(e)
-
-    @defer.inlineCallbacks
-    def join_room(self, room_name, sender, joinee):
-        """Join a room!"""
-        self._on_join(room_name, joinee)
-
-        destinations = yield self.get_servers_for_context(room_name)
-
-        try:
-            pdu = Pdu.create_new(
-                context=room_name,
-                pdu_type="sy.room.member",
-                is_state=True,
-                state_key=joinee,
-                content={"membership": "join"},
-                origin=self.server_name,
-                destinations=destinations,
-            )
-            yield self.replication_layer.send_pdu(pdu)
-        except Exception as e:
-            logger.exception(e)
-
-    @defer.inlineCallbacks
-    def invite_to_room(self, room_name, sender, invitee):
-        """Invite someone to a room!"""
-        self._on_invite(self.server_name, room_name, invitee)
-
-        destinations = yield self.get_servers_for_context(room_name)
-
-        try:
-            yield self.replication_layer.send_pdu(
-                Pdu.create_new(
-                    context=room_name,
-                    is_state=True,
-                    pdu_type="sy.room.member",
-                    state_key=invitee,
-                    content={"membership": "invite"},
-                    origin=self.server_name,
-                    destinations=destinations,
-                )
-            )
-        except Exception as e:
-            logger.exception(e)
-
-    def backfill(self, room_name, limit=5):
-        room = self.joined_rooms.get(room_name)
-
-        if not room:
-            return
-
-        dest = room.oldest_server
-
-        return self.replication_layer.backfill(dest, room_name, limit)
-
-    def _get_room_remote_servers(self, room_name):
-        return list(self.joined_rooms.setdefault(room_name).servers)
-
-    def _get_or_create_room(self, room_name):
-        return self.joined_rooms.setdefault(room_name, Room(room_name))
-
-    def get_servers_for_context(self, context):
-        return defer.succeed(
-            self.joined_rooms.setdefault(context, Room(context)).servers
-        )
-
-
-def main(stdscr):
-    parser = argparse.ArgumentParser()
-    parser.add_argument("user", type=str)
-    parser.add_argument("-v", "--verbose", action="count")
-    args = parser.parse_args()
-
-    user = args.user
-    server_name = origin_from_ucid(user)
-
-    # Set up logging
-
-    root_logger = logging.getLogger()
-
-    formatter = logging.Formatter(
-        "%(asctime)s - %(name)s - %(lineno)d - %(levelname)s - %(message)s"
-    )
-    if not os.path.exists("logs"):
-        os.makedirs("logs")
-    fh = logging.FileHandler("logs/%s" % user)
-    fh.setFormatter(formatter)
-
-    root_logger.addHandler(fh)
-    root_logger.setLevel(logging.DEBUG)
-
-    # Hack: The only way to get it to stop logging to sys.stderr :(
-    log.theLogPublisher.observers = []
-    observer = log.PythonLoggingObserver()
-    observer.start()
-
-    # Set up synapse server
-
-    curses_stdio = cursesio.CursesStdIO(stdscr)
-    input_output = InputOutput(curses_stdio, user)
-
-    curses_stdio.set_callback(input_output)
-
-    app_hs = SynapseHomeServer(server_name, db_name="dbs/%s" % user)
-    replication = app_hs.get_replication_layer()
-
-    hs = HomeServer(server_name, replication, curses_stdio)
-
-    input_output.set_home_server(hs)
-
-    # Add input_output logger
-    io_logger = IOLoggerHandler(input_output)
-    io_logger.setFormatter(formatter)
-    root_logger.addHandler(io_logger)
-
-    # Start!
-
-    try:
-        port = int(server_name.split(":")[1])
-    except Exception:
-        port = 12345
-
-    app_hs.get_http_server().start_listening(port)
-
-    reactor.addReader(curses_stdio)
-
-    reactor.run()
-
-
-if __name__ == "__main__":
-    curses.wrapper(main)