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Diffstat (limited to 'example/test_messaging.py')
| -rw-r--r-- | example/test_messaging.py | 380 |
1 files changed, 380 insertions, 0 deletions
diff --git a/example/test_messaging.py b/example/test_messaging.py new file mode 100644 index 0000000000..9a45425173 --- /dev/null +++ b/example/test_messaging.py @@ -0,0 +1,380 @@ +# -*- coding: utf-8 -*- + +""" 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> + +""" + + +from synapse.federation import ( + ReplicationHandler +) + +from synapse.federation.units import Pdu + +from synapse.util import origin_from_ucid + +from synapse.app.homeserver import SynapseHomeServer + +#from synapse.util.logutils import log_function + +from twisted.internet import reactor, defer +from twisted.python import log + +import argparse +import json +import logging +import os +import re + +import cursesio +import curses.wrapper + + +logger = logging.getLogger("example") + + +def excpetion_errback(failure): + logging.exception(failure) + + +class InputOutput(object): + """ 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("^join (\S+)$", line) + if m: + # The `sender` wants to join a room. + room_name, = m.groups() + self.print_line("%s joining %s" % (self.user, room_name)) + self.server.join_room(room_name, self.user, self.user) + #self.print_line("OK.") + return + + m = re.match("^invite (\S+) (\S+)$", 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("^send (\S+) (.*)$", line) + if m: + # `sender` wants to message a room + room_name, body = m.groups() + self.print_line("%s send to %s" % (self.user, room_name)) + self.server.send_message(room_name, self.user, body) + #self.print_line("OK.") + return + + m = re.match("^paginate (\S+)$", line) + if m: + # we want to paginate a room + room_name, = m.groups() + self.print_line("paginate %s" % room_name) + self.server.paginate(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(object): + """ 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_state_change(self, pdu): + ##self.output.print_line("#%s (state) %s *** %s" % + ##(pdu.context, pdu.state_key, pdu.pdu_type) + ##) + + #if "joinee" in pdu.content: + #self._on_join(pdu.context, pdu.content["joinee"]) + #elif "invitee" in pdu.content: + #self._on_invite(pdu.origin, pdu.context, pdu.content["invitee"]) + + 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 paginate(self, room_name, limit=5): + room = self.joined_rooms.get(room_name) + + if not room: + return + + dest = room.oldest_server + + return self.replication_layer.paginate(dest, room_name, limit) + + def _get_room_remote_servers(self, room_name): + return [i for i in 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: + port = 12345 + + app_hs.get_http_server().start_listening(port) + + reactor.addReader(curses_stdio) + + reactor.run() + + +if __name__ == "__main__": + curses.wrapper(main) |