make README a bit more comprehensive and rename example/ as experiments/

This commit is contained in:
Matthew Hodgson 2014-08-12 19:36:36 +01:00
parent 7c762e60c9
commit ba92c6f301
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About
=====
Matrix is an ambitious new ecosystem for open federated Instant Messaging and VoIP[1].
Matrix specifies a set of pragmatic RESTful HTTP JSON APIs as an open standard, providing:
- Creating and managing fully distributed chat rooms with no
single points of control or failure
- Eventually-consistent cryptographically secure synchronisation of room
state across a global open network of federated servers and services
- Sending and receiving extensible messages in a room with (optional)
end-to-end encryption[2]
- Inviting, joining, leaving, kicking, banning room members
- Managing user accounts (registration, login, logout)
- Using 3rd Party IDs (3PIDs) such as email addresses, phone numbers,
Facebook accounts to authenticate, identify and discover users on Matrix.
- Placing 1:1 VoIP and Video calls (in development)
These APIs are intended to be implemented on a wide range of servers, services
and clients which then form the Matrix ecosystem, and allow developers to build
messaging and VoIP functionality on top of the open Matrix community rather than
using closed or proprietary solutions. The hope is for Matrix to act as the
building blocks for a new generation of fully open and interoperable messaging
and VoIP apps for the internet.
Synapse is a reference "homeserver" implementation of Matrix from the core
development team at matrix.org, written in Python/Twisted for clarity and
simplicity. It is intended to showcase the concept of Matrix and let folks see
the spec in the context of a codebase and let you run your own homeserver and
generally help bootstrap the ecosystem.
In Matrix, every user runs one or more Matrix clients, which connect through to
a Matrix homeserver which stores all their personal chat history and user
account information - much as a mail client connects through to an IMAP/SMTP
server. Just like email, you can either run your own Matrix homeserver and
control and own your own communications and history or use one hosted by someone
else (e.g. matrix.org) - there is no single point of control or mandatory
service provider in Matrix, unlike WhatsApp, Facebook, Hangouts, etc.
Synapse ships with two basic demo Matrix clients: webclient (a basic group chat web client demo implemented in AngularJS) and cmdclient (a basic Python commandline utility which lets you easily see what the JSON APIs are up to).
We'd like to invite you to take a look at the Matrix spec, try to run a homeserver, and join the existing Matrix chatrooms already out there, experiment with the APIs and the demo clients, and let us know your thoughts at https://github.com/matrix-org/synapse/issues or at matrix@matrix.org.
Thanks for trying Matrix!
[1] VoIP currently in development
[2] End-to-end encryption is currently in development
Directory Structure
===================
::
.
├── cmdclient Basic CLI python Matrix client
├── demo Scripts for running standalone Matrix demos
├── docs All doc, including the draft Matrix API spec
│   ├── client-server The client-server Matrix API spec
│   ├── model Domain-specific elements of the Matrix API spec
│   ├── server-server The server-server model of the Matrix API spec
│   └── sphinx The internal API doc of the Synapse homeserver
├── experiments Early experiments of using Synapse's internal APIs
├── graph Visualisation of Matrix's distributed message store
├── synapse The reference Matrix homeserver implementation
│   ├── api Common building blocks for the APIs
│   │   ├── events Definition of state representation Events
│   │   └── streams Definition of streamable Event objects
│   ├── app The __main__ entry point for the homeserver
│   ├── crypto The PKI client/server used for secure federation
│   │   └── resource PKI helper objects (e.g. keys)
│   ├── federation Server-server state replication logic
│   ├── handlers The main business logic of the homeserver
│   ├── http Wrappers around Twisted's HTTP server & client
│   ├── rest Servlet-style RESTful API
│   ├── storage Persistence subsystem (currently only sqlite3)
│   │   └── schema sqlite persistence schema
│   └── util Synapse-specific utilities
├── tests Unit tests for the Synapse homeserver
└── webclient Basic AngularJS Matrix web client
Installation
============
[TODO(kegan): I also needed libffi-dev, which I don't think is included in build-essential.]
First, the dependencies need to be installed. Start by installing
'python2.7-dev' and the various tools of the compiler toolchain.
First, the dependencies need to be installed. Start by installing 'python-dev'
and the various tools of the compiler toolchain:
N.B. that python 2.x where x >= 7 is required.
Installing prerequisites on ubuntu::
$ sudo apt-get install build-essential python-dev
$ sudo apt-get install build-essential python2.7-dev libffi-dev
Installing prerequisites on Mac OS X::
@ -35,12 +117,13 @@ This should end with a 'PASSED' result::
PASSED (successes=143)
Running The Home Server
=======================
Running The Synapse Homeserver
==============================
In order for other home servers to send messages to your server, they will need
to know its host name. You have two choices here, which will influence the form
of your user IDs:
In order for other homeservers to send messages to your server, it will need to
be publicly visible on the internet, and they will need to know its host name.
You have two choices here, which will influence the form of your matrix user
IDs:
1) Use the machine's own hostname as available on public DNS in the form of its
A or AAAA records. This is easier to set up initially, perhaps for testing,
@ -58,10 +141,9 @@ For the first form, simply pass the required hostname (of the machine) as the
For the second form, first create your SRV record and publish it in DNS. This
needs to be named _matrix._tcp.YOURDOMAIN, and point at at least one hostname
and port where the server is running. (At the current time we only support a
single server, but we may at some future point support multiple servers, for
backup failover or load-balancing purposes). The DNS record would then look
something like::
and port where the server is running. (At the current time synapse does not
support clustering multiple servers into a single logical homeserver). The DNS
record would then look something like::
_matrix._tcp IN SRV 10 0 8448 machine.my.domain.name.
@ -73,9 +155,13 @@ SRV record, as that is the name other machines will expect it to have::
You may additionally want to pass one or more "-v" options, in order to
increase the verbosity of logging output; at least for initial testing.
For the initial alpha release, the homeserver is not speaking TLS for
either client-server or server-server traffic for ease of debugging. We have
also not spent any time yet getting the homeserver to run behind loadbalancers.
Running The Web Client
======================
Running The Demo Web Client
===========================
At the present time, the web client is not directly served by the homeserver's
HTTP server. To serve this in a form the web browser can reach, arrange for the
@ -92,6 +178,7 @@ HTML5 local storage to remember its config), you will need to log in to your
account. If you don't yet have an account, because you've just started the
homeserver for the first time, then you'll need to register one.
Registering A New Account
-------------------------
@ -103,7 +190,10 @@ account. Your name will take the form of::
(pronounced "at localpart on my dot domain dot here")
Specify your desired localpart in the topmost box of the "Register for an
account" form, and click the "Register" button.
account" form, and click the "Register" button. Hostnames can contain ports if
required due to lack of SRV records (e.g. @matthew:localhost:8080 on an internal
synapse sandbox running on localhost)
Logging In To An Existing Account
---------------------------------

154
experiments/cursesio.py Normal file
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import curses
import curses.wrapper
from curses.ascii import isprint
from twisted.internet import reactor
class CursesStdIO():
def __init__(self, stdscr, callback=None):
self.statusText = "Synapse test app -"
self.searchText = ''
self.stdscr = stdscr
self.logLine = ''
self.callback = callback
self._setup()
def _setup(self):
self.stdscr.nodelay(1) # Make non blocking
self.rows, self.cols = self.stdscr.getmaxyx()
self.lines = []
curses.use_default_colors()
self.paintStatus(self.statusText)
self.stdscr.refresh()
def set_callback(self, callback):
self.callback = callback
def fileno(self):
""" We want to select on FD 0 """
return 0
def connectionLost(self, reason):
self.close()
def print_line(self, text):
""" add a line to the internal list of lines"""
self.lines.append(text)
self.redraw()
def print_log(self, text):
self.logLine = text
self.redraw()
def redraw(self):
""" method for redisplaying lines
based on internal list of lines """
self.stdscr.clear()
self.paintStatus(self.statusText)
i = 0
index = len(self.lines) - 1
while i < (self.rows - 3) and index >= 0:
self.stdscr.addstr(self.rows - 3 - i, 0, self.lines[index],
curses.A_NORMAL)
i = i + 1
index = index - 1
self.printLogLine(self.logLine)
self.stdscr.refresh()
def paintStatus(self, text):
if len(text) > self.cols:
raise RuntimeError("TextTooLongError")
self.stdscr.addstr(
self.rows - 2, 0,
text + ' ' * (self.cols - len(text)),
curses.A_STANDOUT)
def printLogLine(self, text):
self.stdscr.addstr(
0, 0,
text + ' ' * (self.cols - len(text)),
curses.A_STANDOUT)
def doRead(self):
""" Input is ready! """
curses.noecho()
c = self.stdscr.getch() # read a character
if c == curses.KEY_BACKSPACE:
self.searchText = self.searchText[:-1]
elif c == curses.KEY_ENTER or c == 10:
text = self.searchText
self.searchText = ''
self.print_line(">> %s" % text)
try:
if self.callback:
self.callback.on_line(text)
except Exception as e:
self.print_line(str(e))
self.stdscr.refresh()
elif isprint(c):
if len(self.searchText) == self.cols - 2:
return
self.searchText = self.searchText + chr(c)
self.stdscr.addstr(self.rows - 1, 0,
self.searchText + (' ' * (
self.cols - len(self.searchText) - 2)))
self.paintStatus(self.statusText + ' %d' % len(self.searchText))
self.stdscr.move(self.rows - 1, len(self.searchText))
self.stdscr.refresh()
def logPrefix(self):
return "CursesStdIO"
def close(self):
""" clean up """
curses.nocbreak()
self.stdscr.keypad(0)
curses.echo()
curses.endwin()
class Callback(object):
def __init__(self, stdio):
self.stdio = stdio
def on_line(self, text):
self.stdio.print_line(text)
def main(stdscr):
screen = CursesStdIO(stdscr) # create Screen object
callback = Callback(screen)
screen.set_callback(callback)
stdscr.refresh()
reactor.addReader(screen)
reactor.run()
screen.close()
if __name__ == '__main__':
curses.wrapper(main)

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@ -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)