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Merge pull request #101 from matrix-org/neaten-federation-servlets

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Neaten federation servlets
This commit is contained in:
Erik Johnston 2015-03-09 17:39:06 +00:00
commit 019422ebba
1 changed files with 157 additions and 182 deletions
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339
synapse/federation/transport/server.py
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@ -19,6 +19,7 @@ from synapse.api.urls import FEDERATION_PREFIX as PREFIX
from synapse.api.errors import Codes, SynapseError from synapse.api.errors import Codes, SynapseError
from synapse.util.logutils import log_function from synapse.util.logutils import log_function
import functools
import logging import logging
import simplejson as json import simplejson as json
import re import re
@ -30,8 +31,9 @@ logger = logging.getLogger(__name__)
class TransportLayerServer(object): class TransportLayerServer(object):
"""Handles incoming federation HTTP requests""" """Handles incoming federation HTTP requests"""
# A method just so we can pass 'self' as the authenticator to the Servlets
@defer.inlineCallbacks @defer.inlineCallbacks
def _authenticate_request(self, request): def authenticate_request(self, request):
json_request = { json_request = {
"method": request.method, "method": request.method,
"uri": request.uri, "uri": request.uri,
@ -93,28 +95,6 @@ class TransportLayerServer(object):
defer.returnValue((origin, content)) defer.returnValue((origin, content))
def _with_authentication(self, handler):
@defer.inlineCallbacks
def new_handler(request, *args, **kwargs):
try:
(origin, content) = yield self._authenticate_request(request)
with self.ratelimiter.ratelimit(origin) as d:
yield d
response = yield handler(
origin, content, request.args, *args, **kwargs
)
except:
logger.exception("_authenticate_request failed")
raise
defer.returnValue(response)
return new_handler
def rate_limit_origin(self, handler):
def new_handler(origin, *args, **kwargs):
response = yield handler(origin, *args, **kwargs)
defer.returnValue(response)
return new_handler()
@log_function @log_function
def register_received_handler(self, handler): def register_received_handler(self, handler):
""" Register a handler that will be fired when we receive data. """ Register a handler that will be fired when we receive data.
@ -122,14 +102,12 @@ class TransportLayerServer(object):
Args: Args:
handler (TransportReceivedHandler) handler (TransportReceivedHandler)
""" """
self.received_handler = handler FederationSendServlet(
handler,
# This is when someone is trying to send us a bunch of data. authenticator=self,
self.server.register_path( ratelimiter=self.ratelimiter,
"PUT", server_name=self.server_name,
re.compile("^" + PREFIX + "/send/([^/]*)/$"), ).register(self.server)
self._with_authentication(self._on_send_request)
)
@log_function @log_function
def register_request_handler(self, handler): def register_request_handler(self, handler):
@ -138,136 +116,61 @@ class TransportLayerServer(object):
Args: Args:
handler (TransportRequestHandler) handler (TransportRequestHandler)
""" """
self.request_handler = handler for servletclass in SERVLET_CLASSES:
servletclass(
handler,
authenticator=self,
ratelimiter=self.ratelimiter,
).register(self.server)
# This is for when someone asks us for everything since version X
self.server.register_path(
"GET",
re.compile("^" + PREFIX + "/pull/$"),
self._with_authentication(
lambda origin, content, query:
handler.on_pull_request(query["origin"][0], query["v"])
)
)
# This is when someone asks for a data item for a given server class BaseFederationServlet(object):
# data_id pair. def __init__(self, handler, authenticator, ratelimiter):
self.server.register_path( self.handler = handler
"GET", self.authenticator = authenticator
re.compile("^" + PREFIX + "/event/([^/]*)/$"), self.ratelimiter = ratelimiter
self._with_authentication(
lambda origin, content, query, event_id:
handler.on_pdu_request(origin, event_id)
)
)
# This is when someone asks for all data for a given context. def _wrap(self, code):
self.server.register_path( authenticator = self.authenticator
"GET", ratelimiter = self.ratelimiter
re.compile("^" + PREFIX + "/state/([^/]*)/$"),
self._with_authentication(
lambda origin, content, query, context:
handler.on_context_state_request(
origin,
context,
query.get("event_id", [None])[0],
)
)
)
self.server.register_path( @defer.inlineCallbacks
"GET", @functools.wraps(code)
re.compile("^" + PREFIX + "/backfill/([^/]*)/$"), def new_code(request, *args, **kwargs):
self._with_authentication( try:
lambda origin, content, query, context: (origin, content) = yield authenticator.authenticate_request(request)
self._on_backfill_request( with ratelimiter.ratelimit(origin) as d:
origin, context, query["v"], query["limit"] yield d
) response = yield code(
) origin, content, request.args, *args, **kwargs
) )
except:
logger.exception("authenticate_request failed")
raise
defer.returnValue(response)
return new_code
# This is when we receive a server-server Query def register(self, server):
self.server.register_path( pattern = re.compile("^" + PREFIX + self.PATH + "$")
"GET",
re.compile("^" + PREFIX + "/query/([^/]*)$"),
self._with_authentication(
lambda origin, content, query, query_type:
handler.on_query_request(
query_type,
{k: v[0].decode("utf-8") for k, v in query.items()}
)
)
)
self.server.register_path( for method in ("GET", "PUT", "POST"):
"GET", code = getattr(self, "on_%s" % (method), None)
re.compile("^" + PREFIX + "/make_join/([^/]*)/([^/]*)$"), if code is None:
self._with_authentication( continue
lambda origin, content, query, context, user_id:
self._on_make_join_request(
origin, content, query, context, user_id
)
)
)
self.server.register_path( server.register_path(method, pattern, self._wrap(code))
"GET",
re.compile("^" + PREFIX + "/event_auth/([^/]*)/([^/]*)$"),
self._with_authentication(
lambda origin, content, query, context, event_id:
handler.on_event_auth(
origin, context, event_id,
)
)
)
self.server.register_path(
"PUT",
re.compile("^" + PREFIX + "/send_join/([^/]*)/([^/]*)$"),
self._with_authentication(
lambda origin, content, query, context, event_id:
self._on_send_join_request(
origin, content, query,
)
)
)
self.server.register_path( class FederationSendServlet(BaseFederationServlet):
"PUT", PATH = "/send/([^/]*)/"
re.compile("^" + PREFIX + "/invite/([^/]*)/([^/]*)$"),
self._with_authentication(
lambda origin, content, query, context, event_id:
self._on_invite_request(
origin, content, query,
)
)
)
self.server.register_path( def __init__(self, handler, server_name, **kwargs):
"POST", super(FederationSendServlet, self).__init__(handler, **kwargs)
re.compile("^" + PREFIX + "/query_auth/([^/]*)/([^/]*)$"), self.server_name = server_name
self._with_authentication(
lambda origin, content, query, context, event_id:
self._on_query_auth_request(
origin, content, event_id,
)
)
)
self.server.register_path(
"POST",
re.compile("^" + PREFIX + "/get_missing_events/([^/]*)/?$"),
self._with_authentication(
lambda origin, content, query, room_id:
self._get_missing_events(
origin, content, room_id,
)
)
)
# This is when someone is trying to send us a bunch of data.
@defer.inlineCallbacks @defer.inlineCallbacks
@log_function def on_PUT(self, origin, content, query, transaction_id):
def _on_send_request(self, origin, content, query, transaction_id):
""" Called on PUT /send/<transaction_id>/ """ Called on PUT /send/<transaction_id>/
Args: Args:
@ -305,8 +208,7 @@ class TransportLayerServer(object):
return return
try: try:
handler = self.received_handler code, response = yield self.handler.on_incoming_transaction(
code, response = yield handler.on_incoming_transaction(
transaction_data transaction_data
) )
except: except:
@ -315,65 +217,123 @@ class TransportLayerServer(object):
defer.returnValue((code, response)) defer.returnValue((code, response))
@log_function
def _on_backfill_request(self, origin, context, v_list, limits): class FederationPullServlet(BaseFederationServlet):
PATH = "/pull/"
# This is for when someone asks us for everything since version X
def on_GET(self, origin, content, query):
return self.handler.on_pull_request(query["origin"][0], query["v"])
class FederationEventServlet(BaseFederationServlet):
PATH = "/event/([^/]*)/"
# This is when someone asks for a data item for a given server data_id pair.
def on_GET(self, origin, content, query, event_id):
return self.handler.on_pdu_request(origin, event_id)
class FederationStateServlet(BaseFederationServlet):
PATH = "/state/([^/]*)/"
# This is when someone asks for all data for a given context.
def on_GET(self, origin, content, query, context):
return self.handler.on_context_state_request(
origin,
context,
query.get("event_id", [None])[0],
)
class FederationBackfillServlet(BaseFederationServlet):
PATH = "/backfill/([^/]*)/"
def on_GET(self, origin, content, query, context):
versions = query["v"]
limits = query["limit"]
if not limits: if not limits:
return defer.succeed( return defer.succeed((400, {"error": "Did not include limit param"}))
(400, {"error": "Did not include limit param"})
)
limit = int(limits[-1]) limit = int(limits[-1])
versions = v_list return self.handler.on_backfill_request(origin, context, versions, limit)
return self.request_handler.on_backfill_request(
origin, context, versions, limit class FederationQueryServlet(BaseFederationServlet):
PATH = "/query/([^/]*)"
# This is when we receive a server-server Query
def on_GET(self, origin, content, query, query_type):
return self.handler.on_query_request(
query_type,
{k: v[0].decode("utf-8") for k, v in query.items()}
) )
class FederationMakeJoinServlet(BaseFederationServlet):
PATH = "/make_join/([^/]*)/([^/]*)"
@defer.inlineCallbacks @defer.inlineCallbacks
@log_function def on_GET(self, origin, content, query, context, user_id):
def _on_make_join_request(self, origin, content, query, context, user_id): content = yield self.handler.on_make_join_request(context, user_id)
content = yield self.request_handler.on_make_join_request(
context, user_id,
)
defer.returnValue((200, content)) defer.returnValue((200, content))
@defer.inlineCallbacks
@log_function
def _on_send_join_request(self, origin, content, query):
content = yield self.request_handler.on_send_join_request(
origin, content,
)
class FederationEventAuthServlet(BaseFederationServlet):
PATH = "/event_auth/([^/]*)/([^/]*)"
def on_GET(self, origin, content, query, context, event_id):
return self.handler.on_event_auth(origin, context, event_id)
class FederationSendJoinServlet(BaseFederationServlet):
PATH = "/send_join/([^/]*)/([^/]*)"
@defer.inlineCallbacks
def on_PUT(self, origin, content, query, context, event_id):
# TODO(paul): assert that context/event_id parsed from path actually
# match those given in content
content = yield self.handler.on_send_join_request(origin, content)
defer.returnValue((200, content)) defer.returnValue((200, content))
@defer.inlineCallbacks
@log_function
def _on_invite_request(self, origin, content, query):
content = yield self.request_handler.on_invite_request(
origin, content,
)
class FederationInviteServlet(BaseFederationServlet):
PATH = "/invite/([^/]*)/([^/]*)"
@defer.inlineCallbacks
def on_PUT(self, origin, content, query, context, event_id):
# TODO(paul): assert that context/event_id parsed from path actually
# match those given in content
content = yield self.handler.on_invite_request(origin, content)
defer.returnValue((200, content)) defer.returnValue((200, content))
class FederationQueryAuthServlet(BaseFederationServlet):
PATH = "/query_auth/([^/]*)/([^/]*)"
@defer.inlineCallbacks @defer.inlineCallbacks
@log_function def on_POST(self, origin, content, query, context, event_id):
def _on_query_auth_request(self, origin, content, event_id): new_content = yield self.handler.on_query_auth_request(
new_content = yield self.request_handler.on_query_auth_request(
origin, content, event_id origin, content, event_id
) )
defer.returnValue((200, new_content)) defer.returnValue((200, new_content))
class FederationGetMissingEventsServlet(BaseFederationServlet):
# TODO(paul): Why does this path alone end with "/?" optional?
PATH = "/get_missing_events/([^/]*)/?"
@defer.inlineCallbacks @defer.inlineCallbacks
@log_function def on_POST(self, origin, content, query, room_id):
def _get_missing_events(self, origin, content, room_id):
limit = int(content.get("limit", 10)) limit = int(content.get("limit", 10))
min_depth = int(content.get("min_depth", 0)) min_depth = int(content.get("min_depth", 0))
earliest_events = content.get("earliest_events", []) earliest_events = content.get("earliest_events", [])
latest_events = content.get("latest_events", []) latest_events = content.get("latest_events", [])
content = yield self.request_handler.on_get_missing_events( content = yield self.handler.on_get_missing_events(
origin, origin,
room_id=room_id, room_id=room_id,
earliest_events=earliest_events, earliest_events=earliest_events,
@ -383,3 +343,18 @@ class TransportLayerServer(object):
) )
defer.returnValue((200, content)) defer.returnValue((200, content))
SERVLET_CLASSES = (
FederationPullServlet,
FederationEventServlet,
FederationStateServlet,
FederationBackfillServlet,
FederationQueryServlet,
FederationMakeJoinServlet,
FederationEventServlet,
FederationSendJoinServlet,
FederationInviteServlet,
FederationQueryAuthServlet,
FederationGetMissingEventsServlet,
)