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MatrixSynapse/synapse/app/homeserver.py

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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# 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.
import synapse
import contextlib
import logging
import os
import re
import resource
import subprocess
import sys
import time
from synapse.config._base import ConfigError
from synapse.python_dependencies import (
check_requirements, DEPENDENCY_LINKS
)
from synapse.rest import ClientRestResource
from synapse.storage.engines import create_engine, IncorrectDatabaseSetup
from synapse.storage import are_all_users_on_domain
from synapse.storage.prepare_database import UpgradeDatabaseException
from synapse.server import HomeServer
from twisted.conch.manhole import ColoredManhole
from twisted.conch.insults import insults
from twisted.conch import manhole_ssh
from twisted.cred import checkers, portal
from twisted.internet import reactor, task, defer
from twisted.application import service
from twisted.web.resource import Resource, EncodingResourceWrapper
from twisted.web.static import File
from twisted.web.server import Site, GzipEncoderFactory, Request
from synapse.http.server import RootRedirect
from synapse.rest.media.v0.content_repository import ContentRepoResource
from synapse.rest.media.v1.media_repository import MediaRepositoryResource
from synapse.rest.key.v1.server_key_resource import LocalKey
from synapse.rest.key.v2 import KeyApiV2Resource
from synapse.api.urls import (
FEDERATION_PREFIX, WEB_CLIENT_PREFIX, CONTENT_REPO_PREFIX,
SERVER_KEY_PREFIX, LEGACY_MEDIA_PREFIX, MEDIA_PREFIX, STATIC_PREFIX,
SERVER_KEY_V2_PREFIX,
)
from synapse.config.homeserver import HomeServerConfig
from synapse.crypto import context_factory
from synapse.util.logcontext import LoggingContext
from synapse.metrics.resource import MetricsResource, METRICS_PREFIX
from synapse.replication.resource import ReplicationResource, REPLICATION_PREFIX
from synapse.federation.transport.server import TransportLayerServer
from synapse import events
from daemonize import Daemonize
logger = logging.getLogger("synapse.app.homeserver")
ACCESS_TOKEN_RE = re.compile(r'(\?.*access(_|%5[Ff])token=)[^&]*(.*)$')
def gz_wrap(r):
return EncodingResourceWrapper(r, [GzipEncoderFactory()])
def build_resource_for_web_client(hs):
webclient_path = hs.get_config().web_client_location
if not webclient_path:
try:
import syweb
except ImportError:
quit_with_error(
"Could not find a webclient.\n\n"
"Please either install the matrix-angular-sdk or configure\n"
"the location of the source to serve via the configuration\n"
"option `web_client_location`\n\n"
"To install the `matrix-angular-sdk` via pip, run:\n\n"
" pip install '%(dep)s'\n"
"\n"
"You can also disable hosting of the webclient via the\n"
"configuration option `web_client`\n"
% {"dep": DEPENDENCY_LINKS["matrix-angular-sdk"]}
)
syweb_path = os.path.dirname(syweb.__file__)
webclient_path = os.path.join(syweb_path, "webclient")
# GZip is disabled here due to
# https://twistedmatrix.com/trac/ticket/7678
# (It can stay enabled for the API resources: they call
# write() with the whole body and then finish() straight
# after and so do not trigger the bug.
# GzipFile was removed in commit 184ba09
# return GzipFile(webclient_path) # TODO configurable?
return File(webclient_path) # TODO configurable?
class SynapseHomeServer(HomeServer):
def _listener_http(self, config, listener_config):
port = listener_config["port"]
bind_address = listener_config.get("bind_address", "")
tls = listener_config.get("tls", False)
site_tag = listener_config.get("tag", port)
if tls and config.no_tls:
return
resources = {}
for res in listener_config["resources"]:
for name in res["names"]:
if name == "client":
client_resource = ClientRestResource(self)
if res["compress"]:
client_resource = gz_wrap(client_resource)
resources.update({
"/_matrix/client/api/v1": client_resource,
"/_matrix/client/r0": client_resource,
"/_matrix/client/unstable": client_resource,
"/_matrix/client/v2_alpha": client_resource,
"/_matrix/client/versions": client_resource,
})
if name == "federation":
resources.update({
FEDERATION_PREFIX: TransportLayerServer(self),
})
if name in ["static", "client"]:
resources.update({
STATIC_PREFIX: File(
os.path.join(os.path.dirname(synapse.__file__), "static")
),
})
if name in ["media", "federation", "client"]:
media_repo = MediaRepositoryResource(self)
resources.update({
MEDIA_PREFIX: media_repo,
LEGACY_MEDIA_PREFIX: media_repo,
CONTENT_REPO_PREFIX: ContentRepoResource(
self, self.config.uploads_path, self.auth, self.content_addr
),
})
if name in ["keys", "federation"]:
resources.update({
SERVER_KEY_PREFIX: LocalKey(self),
SERVER_KEY_V2_PREFIX: KeyApiV2Resource(self),
})
if name == "webclient":
resources[WEB_CLIENT_PREFIX] = build_resource_for_web_client(self)
if name == "metrics" and self.get_config().enable_metrics:
resources[METRICS_PREFIX] = MetricsResource(self)
if name == "replication":
resources[REPLICATION_PREFIX] = ReplicationResource(self)
root_resource = create_resource_tree(resources)
if tls:
reactor.listenSSL(
port,
SynapseSite(
"synapse.access.https.%s" % (site_tag,),
site_tag,
listener_config,
root_resource,
),
self.tls_server_context_factory,
interface=bind_address
)
else:
reactor.listenTCP(
port,
SynapseSite(
"synapse.access.http.%s" % (site_tag,),
site_tag,
listener_config,
root_resource,
),
interface=bind_address
)
logger.info("Synapse now listening on port %d", port)
def start_listening(self):
config = self.get_config()
for listener in config.listeners:
if listener["type"] == "http":
self._listener_http(config, listener)
elif listener["type"] == "manhole":
checker = checkers.InMemoryUsernamePasswordDatabaseDontUse(
matrix="rabbithole"
)
rlm = manhole_ssh.TerminalRealm()
rlm.chainedProtocolFactory = lambda: insults.ServerProtocol(
ColoredManhole,
{
"__name__": "__console__",
"hs": self,
}
)
f = manhole_ssh.ConchFactory(portal.Portal(rlm, [checker]))
reactor.listenTCP(
listener["port"],
f,
interface=listener.get("bind_address", '127.0.0.1')
)
else:
logger.warn("Unrecognized listener type: %s", listener["type"])
def run_startup_checks(self, db_conn, database_engine):
all_users_native = are_all_users_on_domain(
db_conn.cursor(), database_engine, self.hostname
)
if not all_users_native:
quit_with_error(
"Found users in database not native to %s!\n"
"You cannot changed a synapse server_name after it's been configured"
% (self.hostname,)
)
try:
database_engine.check_database(db_conn.cursor())
except IncorrectDatabaseSetup as e:
quit_with_error(e.message)
def get_db_conn(self):
# Any param beginning with cp_ is a parameter for adbapi, and should
# not be passed to the database engine.
db_params = {
k: v for k, v in self.db_config.get("args", {}).items()
if not k.startswith("cp_")
}
db_conn = self.database_engine.module.connect(**db_params)
self.database_engine.on_new_connection(db_conn)
return db_conn
def quit_with_error(error_string):
message_lines = error_string.split("\n")
line_length = max([len(l) for l in message_lines if len(l) < 80]) + 2
sys.stderr.write("*" * line_length + '\n')
for line in message_lines:
sys.stderr.write(" %s\n" % (line.rstrip(),))
sys.stderr.write("*" * line_length + '\n')
sys.exit(1)
def get_version_string():
try:
null = open(os.devnull, 'w')
cwd = os.path.dirname(os.path.abspath(__file__))
try:
git_branch = subprocess.check_output(
['git', 'rev-parse', '--abbrev-ref', 'HEAD'],
stderr=null,
cwd=cwd,
).strip()
git_branch = "b=" + git_branch
except subprocess.CalledProcessError:
git_branch = ""
try:
git_tag = subprocess.check_output(
['git', 'describe', '--exact-match'],
stderr=null,
cwd=cwd,
).strip()
git_tag = "t=" + git_tag
except subprocess.CalledProcessError:
git_tag = ""
try:
git_commit = subprocess.check_output(
['git', 'rev-parse', '--short', 'HEAD'],
stderr=null,
cwd=cwd,
).strip()
except subprocess.CalledProcessError:
git_commit = ""
try:
dirty_string = "-this_is_a_dirty_checkout"
is_dirty = subprocess.check_output(
['git', 'describe', '--dirty=' + dirty_string],
stderr=null,
cwd=cwd,
).strip().endswith(dirty_string)
git_dirty = "dirty" if is_dirty else ""
except subprocess.CalledProcessError:
git_dirty = ""
if git_branch or git_tag or git_commit or git_dirty:
git_version = ",".join(
s for s in
(git_branch, git_tag, git_commit, git_dirty,)
if s
)
return (
"Synapse/%s (%s)" % (
synapse.__version__, git_version,
)
).encode("ascii")
except Exception as e:
logger.info("Failed to check for git repository: %s", e)
return ("Synapse/%s" % (synapse.__version__,)).encode("ascii")
def change_resource_limit(soft_file_no):
try:
soft, hard = resource.getrlimit(resource.RLIMIT_NOFILE)
if not soft_file_no:
soft_file_no = hard
resource.setrlimit(resource.RLIMIT_NOFILE, (soft_file_no, hard))
logger.info("Set file limit to: %d", soft_file_no)
resource.setrlimit(
resource.RLIMIT_CORE, (resource.RLIM_INFINITY, resource.RLIM_INFINITY)
)
except (ValueError, resource.error) as e:
logger.warn("Failed to set file or core limit: %s", e)
def setup(config_options):
"""
Args:
config_options_options: The options passed to Synapse. Usually
`sys.argv[1:]`.
Returns:
HomeServer
"""
try:
config = HomeServerConfig.load_config(
"Synapse Homeserver",
config_options,
generate_section="Homeserver"
)
except ConfigError as e:
sys.stderr.write("\n" + e.message + "\n")
sys.exit(1)
if not config:
# If a config isn't returned, and an exception isn't raised, we're just
# generating config files and shouldn't try to continue.
sys.exit(0)
config.setup_logging()
# check any extra requirements we have now we have a config
check_requirements(config)
version_string = get_version_string()
logger.info("Server hostname: %s", config.server_name)
logger.info("Server version: %s", version_string)
events.USE_FROZEN_DICTS = config.use_frozen_dicts
tls_server_context_factory = context_factory.ServerContextFactory(config)
database_engine = create_engine(config)
config.database_config["args"]["cp_openfun"] = database_engine.on_new_connection
hs = SynapseHomeServer(
config.server_name,
db_config=config.database_config,
tls_server_context_factory=tls_server_context_factory,
config=config,
content_addr=config.content_addr,
version_string=version_string,
database_engine=database_engine,
)
logger.info("Preparing database: %s...", config.database_config['name'])
try:
db_conn = hs.get_db_conn()
database_engine.prepare_database(db_conn)
hs.run_startup_checks(db_conn, database_engine)
db_conn.commit()
except UpgradeDatabaseException:
sys.stderr.write(
"\nFailed to upgrade database.\n"
"Have you checked for version specific instructions in"
" UPGRADES.rst?\n"
)
sys.exit(1)
logger.info("Database prepared in %s.", config.database_config['name'])
hs.setup()
hs.start_listening()
def start():
hs.get_pusherpool().start()
hs.get_state_handler().start_caching()
hs.get_datastore().start_profiling()
hs.get_datastore().start_doing_background_updates()
hs.get_replication_layer().start_get_pdu_cache()
reactor.callWhenRunning(start)
return hs
class SynapseService(service.Service):
"""A twisted Service class that will start synapse. Used to run synapse
via twistd and a .tac.
"""
def __init__(self, config):
self.config = config
def startService(self):
hs = setup(self.config)
change_resource_limit(hs.config.soft_file_limit)
def stopService(self):
return self._port.stopListening()
class SynapseRequest(Request):
def __init__(self, site, *args, **kw):
Request.__init__(self, *args, **kw)
self.site = site
self.authenticated_entity = None
self.start_time = 0
def __repr__(self):
# We overwrite this so that we don't log ``access_token``
return '<%s at 0x%x method=%s uri=%s clientproto=%s site=%s>' % (
self.__class__.__name__,
id(self),
self.method,
self.get_redacted_uri(),
self.clientproto,
self.site.site_tag,
)
def get_redacted_uri(self):
return ACCESS_TOKEN_RE.sub(
r'\1<redacted>\3',
self.uri
)
def get_user_agent(self):
return self.requestHeaders.getRawHeaders("User-Agent", [None])[-1]
def started_processing(self):
self.site.access_logger.info(
"%s - %s - Received request: %s %s",
self.getClientIP(),
self.site.site_tag,
self.method,
self.get_redacted_uri()
)
self.start_time = int(time.time() * 1000)
def finished_processing(self):
try:
context = LoggingContext.current_context()
ru_utime, ru_stime = context.get_resource_usage()
db_txn_count = context.db_txn_count
db_txn_duration = context.db_txn_duration
except:
ru_utime, ru_stime = (0, 0)
db_txn_count, db_txn_duration = (0, 0)
self.site.access_logger.info(
"%s - %s - {%s}"
" Processed request: %dms (%dms, %dms) (%dms/%d)"
" %sB %s \"%s %s %s\" \"%s\"",
self.getClientIP(),
self.site.site_tag,
self.authenticated_entity,
int(time.time() * 1000) - self.start_time,
int(ru_utime * 1000),
int(ru_stime * 1000),
int(db_txn_duration * 1000),
int(db_txn_count),
self.sentLength,
self.code,
self.method,
self.get_redacted_uri(),
self.clientproto,
self.get_user_agent(),
)
@contextlib.contextmanager
def processing(self):
self.started_processing()
yield
self.finished_processing()
class XForwardedForRequest(SynapseRequest):
def __init__(self, *args, **kw):
SynapseRequest.__init__(self, *args, **kw)
"""
Add a layer on top of another request that only uses the value of an
X-Forwarded-For header as the result of C{getClientIP}.
"""
def getClientIP(self):
"""
@return: The client address (the first address) in the value of the
I{X-Forwarded-For header}. If the header is not present, return
C{b"-"}.
"""
return self.requestHeaders.getRawHeaders(
b"x-forwarded-for", [b"-"])[0].split(b",")[0].strip()
class SynapseRequestFactory(object):
def __init__(self, site, x_forwarded_for):
self.site = site
self.x_forwarded_for = x_forwarded_for
def __call__(self, *args, **kwargs):
if self.x_forwarded_for:
return XForwardedForRequest(self.site, *args, **kwargs)
else:
return SynapseRequest(self.site, *args, **kwargs)
class SynapseSite(Site):
"""
Subclass of a twisted http Site that does access logging with python's
standard logging
"""
def __init__(self, logger_name, site_tag, config, resource, *args, **kwargs):
Site.__init__(self, resource, *args, **kwargs)
self.site_tag = site_tag
proxied = config.get("x_forwarded", False)
self.requestFactory = SynapseRequestFactory(self, proxied)
self.access_logger = logging.getLogger(logger_name)
def log(self, request):
pass
def create_resource_tree(desired_tree, redirect_root_to_web_client=True):
"""Create the resource tree for this Home Server.
This in unduly complicated because Twisted does not support putting
child resources more than 1 level deep at a time.
Args:
web_client (bool): True to enable the web client.
redirect_root_to_web_client (bool): True to redirect '/' to the
location of the web client. This does nothing if web_client is not
True.
"""
if redirect_root_to_web_client and WEB_CLIENT_PREFIX in desired_tree:
root_resource = RootRedirect(WEB_CLIENT_PREFIX)
else:
root_resource = Resource()
# ideally we'd just use getChild and putChild but getChild doesn't work
# unless you give it a Request object IN ADDITION to the name :/ So
# instead, we'll store a copy of this mapping so we can actually add
# extra resources to existing nodes. See self._resource_id for the key.
resource_mappings = {}
for full_path, res in desired_tree.items():
logger.info("Attaching %s to path %s", res, full_path)
last_resource = root_resource
for path_seg in full_path.split('/')[1:-1]:
if path_seg not in last_resource.listNames():
# resource doesn't exist, so make a "dummy resource"
child_resource = Resource()
last_resource.putChild(path_seg, child_resource)
res_id = _resource_id(last_resource, path_seg)
resource_mappings[res_id] = child_resource
last_resource = child_resource
else:
# we have an existing Resource, use that instead.
res_id = _resource_id(last_resource, path_seg)
last_resource = resource_mappings[res_id]
# ===========================
# now attach the actual desired resource
last_path_seg = full_path.split('/')[-1]
# if there is already a resource here, thieve its children and
# replace it
res_id = _resource_id(last_resource, last_path_seg)
if res_id in resource_mappings:
# there is a dummy resource at this path already, which needs
# to be replaced with the desired resource.
existing_dummy_resource = resource_mappings[res_id]
for child_name in existing_dummy_resource.listNames():
child_res_id = _resource_id(
existing_dummy_resource, child_name
)
child_resource = resource_mappings[child_res_id]
# steal the children
res.putChild(child_name, child_resource)
# finally, insert the desired resource in the right place
last_resource.putChild(last_path_seg, res)
res_id = _resource_id(last_resource, last_path_seg)
resource_mappings[res_id] = res
return root_resource
def _resource_id(resource, path_seg):
"""Construct an arbitrary resource ID so you can retrieve the mapping
later.
If you want to represent resource A putChild resource B with path C,
the mapping should looks like _resource_id(A,C) = B.
Args:
resource (Resource): The *parent* Resourceb
path_seg (str): The name of the child Resource to be attached.
Returns:
str: A unique string which can be a key to the child Resource.
"""
return "%s-%s" % (resource, path_seg)
def run(hs):
PROFILE_SYNAPSE = False
if PROFILE_SYNAPSE:
def profile(func):
from cProfile import Profile
from threading import current_thread
def profiled(*args, **kargs):
profile = Profile()
profile.enable()
func(*args, **kargs)
profile.disable()
ident = current_thread().ident
profile.dump_stats("/tmp/%s.%s.%i.pstat" % (
hs.hostname, func.__name__, ident
))
return profiled
from twisted.python.threadpool import ThreadPool
ThreadPool._worker = profile(ThreadPool._worker)
reactor.run = profile(reactor.run)
start_time = hs.get_clock().time()
@defer.inlineCallbacks
def phone_stats_home():
logger.info("Gathering stats for reporting")
now = int(hs.get_clock().time())
uptime = int(now - start_time)
if uptime < 0:
uptime = 0
stats = {}
stats["homeserver"] = hs.config.server_name
stats["timestamp"] = now
stats["uptime_seconds"] = uptime
stats["total_users"] = yield hs.get_datastore().count_all_users()
room_count = yield hs.get_datastore().get_room_count()
stats["total_room_count"] = room_count
stats["daily_active_users"] = yield hs.get_datastore().count_daily_users()
daily_messages = yield hs.get_datastore().count_daily_messages()
if daily_messages is not None:
stats["daily_messages"] = daily_messages
logger.info("Reporting stats to matrix.org: %s" % (stats,))
try:
yield hs.get_simple_http_client().put_json(
"https://matrix.org/report-usage-stats/push",
stats
)
except Exception as e:
logger.warn("Error reporting stats: %s", e)
if hs.config.report_stats:
phone_home_task = task.LoopingCall(phone_stats_home)
logger.info("Scheduling stats reporting for 24 hour intervals")
phone_home_task.start(60 * 60 * 24, now=False)
def in_thread():
# Uncomment to enable tracing of log context changes.
# sys.settrace(logcontext_tracer)
with LoggingContext("run"):
change_resource_limit(hs.config.soft_file_limit)
reactor.run()
if hs.config.daemonize:
if hs.config.print_pidfile:
print (hs.config.pid_file)
daemon = Daemonize(
app="synapse-homeserver",
pid=hs.config.pid_file,
action=lambda: in_thread(),
auto_close_fds=False,
verbose=True,
logger=logger,
)
daemon.start()
else:
in_thread()
def main():
with LoggingContext("main"):
# check base requirements
check_requirements()
hs = setup(sys.argv[1:])
run(hs)
if __name__ == '__main__':
main()
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