mirror of
https://git.anonymousland.org/anonymousland/synapse-product.git
synced 2024-12-11 06:04:19 -05:00
Factor out exception handling in federation_client
Factor out the error handling from make_membership_event, send_join, and send_leave, so that it can be shared.
This commit is contained in:
Richard van der Hoff
parent
da7785147d
commit
c82ccd3027
@ -48,6 +48,13 @@ sent_queries_counter = Counter("synapse_federation_client_sent_queries", "", ["t
|
||||
PDU_RETRY_TIME_MS = 1 * 60 * 1000
|
||||
|
||||
|
||||
class InvalidResponseError(RuntimeError):
|
||||
"""Helper for _try_destination_list: indicates that the server returned a response
|
||||
we couldn't parse
|
||||
"""
|
||||
pass
|
||||
|
||||
|
||||
class FederationClient(FederationBase):
|
||||
def __init__(self, hs):
|
||||
super(FederationClient, self).__init__(hs)
|
||||
@ -458,6 +465,61 @@ class FederationClient(FederationBase):
|
||||
defer.returnValue(signed_auth)
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def _try_destination_list(self, description, destinations, callback):
|
||||
"""Try an operation on a series of servers, until it succeeds
|
||||
|
||||
Args:
|
||||
description (unicode): description of the operation we're doing, for logging
|
||||
|
||||
destinations (Iterable[unicode]): list of server_names to try
|
||||
|
||||
callback (callable): Function to run for each server. Passed a single
|
||||
argument: the server_name to try. May return a deferred.
|
||||
|
||||
If the callback raises a CodeMessageException with a 300/400 code,
|
||||
attempts to perform the operation stop immediately and the exception is
|
||||
reraised.
|
||||
|
||||
Otherwise, if the callback raises an Exception the error is logged and the
|
||||
next server tried. Normally the stacktrace is logged but this is
|
||||
suppressed if the exception is an InvalidResponseError.
|
||||
|
||||
Returns:
|
||||
The [Deferred] result of callback, if it succeeds
|
||||
|
||||
Raises:
|
||||
CodeMessageException if the chosen remote server returns a 300/400 code.
|
||||
|
||||
RuntimeError if no servers were reachable.
|
||||
"""
|
||||
for destination in destinations:
|
||||
if destination == self.server_name:
|
||||
continue
|
||||
|
||||
try:
|
||||
res = yield callback(destination)
|
||||
defer.returnValue(res)
|
||||
except InvalidResponseError as e:
|
||||
logger.warn(
|
||||
"Failed to %s via %s: %s",
|
||||
description, destination, e,
|
||||
)
|
||||
except CodeMessageException as e:
|
||||
if not 500 <= e.code < 600:
|
||||
raise
|
||||
else:
|
||||
logger.warn(
|
||||
"Failed to %s via %s: %i %s",
|
||||
description, destination, e.code, e.message,
|
||||
)
|
||||
except Exception:
|
||||
logger.warn(
|
||||
"Failed to %s via %s",
|
||||
description, destination, exc_info=1,
|
||||
)
|
||||
|
||||
raise RuntimeError("Failed to %s via any server", description)
|
||||
|
||||
def make_membership_event(self, destinations, room_id, user_id, membership,
|
||||
content={},):
|
||||
"""
|
||||
@ -492,50 +554,35 @@ class FederationClient(FederationBase):
|
||||
"make_membership_event called with membership='%s', must be one of %s" %
|
||||
(membership, ",".join(valid_memberships))
|
||||
)
|
||||
for destination in destinations:
|
||||
if destination == self.server_name:
|
||||
continue
|
||||
|
||||
try:
|
||||
ret = yield self.transport_layer.make_membership_event(
|
||||
destination, room_id, user_id, membership
|
||||
)
|
||||
@defer.inlineCallbacks
|
||||
def send_request(destination):
|
||||
ret = yield self.transport_layer.make_membership_event(
|
||||
destination, room_id, user_id, membership
|
||||
)
|
||||
|
||||
pdu_dict = ret["event"]
|
||||
pdu_dict = ret["event"]
|
||||
|
||||
logger.debug("Got response to make_%s: %s", membership, pdu_dict)
|
||||
logger.debug("Got response to make_%s: %s", membership, pdu_dict)
|
||||
|
||||
pdu_dict["content"].update(content)
|
||||
pdu_dict["content"].update(content)
|
||||
|
||||
# The protoevent received over the JSON wire may not have all
|
||||
# the required fields. Lets just gloss over that because
|
||||
# there's some we never care about
|
||||
if "prev_state" not in pdu_dict:
|
||||
pdu_dict["prev_state"] = []
|
||||
# The protoevent received over the JSON wire may not have all
|
||||
# the required fields. Lets just gloss over that because
|
||||
# there's some we never care about
|
||||
if "prev_state" not in pdu_dict:
|
||||
pdu_dict["prev_state"] = []
|
||||
|
||||
ev = builder.EventBuilder(pdu_dict)
|
||||
ev = builder.EventBuilder(pdu_dict)
|
||||
|
||||
defer.returnValue(
|
||||
(destination, ev)
|
||||
)
|
||||
break
|
||||
except CodeMessageException as e:
|
||||
if not 500 <= e.code < 600:
|
||||
raise
|
||||
else:
|
||||
logger.warn(
|
||||
"Failed to make_%s via %s: %s",
|
||||
membership, destination, e.message
|
||||
)
|
||||
except Exception as e:
|
||||
logger.warn(
|
||||
"Failed to make_%s via %s: %s",
|
||||
membership, destination, e.message
|
||||
)
|
||||
defer.returnValue(
|
||||
(destination, ev)
|
||||
)
|
||||
|
||||
raise RuntimeError("Failed to send to any server.")
|
||||
return self._try_destination_list(
|
||||
"make_" + membership, destinations, send_request,
|
||||
)
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def send_join(self, destinations, pdu):
|
||||
"""Sends a join event to one of a list of homeservers.
|
||||
|
||||
@ -558,87 +605,70 @@ class FederationClient(FederationBase):
|
||||
Fails with a ``RuntimeError`` if no servers were reachable.
|
||||
"""
|
||||
|
||||
for destination in destinations:
|
||||
if destination == self.server_name:
|
||||
continue
|
||||
@defer.inlineCallbacks
|
||||
def send_request(destination):
|
||||
time_now = self._clock.time_msec()
|
||||
_, content = yield self.transport_layer.send_join(
|
||||
destination=destination,
|
||||
room_id=pdu.room_id,
|
||||
event_id=pdu.event_id,
|
||||
content=pdu.get_pdu_json(time_now),
|
||||
)
|
||||
|
||||
try:
|
||||
time_now = self._clock.time_msec()
|
||||
_, content = yield self.transport_layer.send_join(
|
||||
destination=destination,
|
||||
room_id=pdu.room_id,
|
||||
event_id=pdu.event_id,
|
||||
content=pdu.get_pdu_json(time_now),
|
||||
)
|
||||
logger.debug("Got content: %s", content)
|
||||
|
||||
logger.debug("Got content: %s", content)
|
||||
state = [
|
||||
event_from_pdu_json(p, outlier=True)
|
||||
for p in content.get("state", [])
|
||||
]
|
||||
|
||||
state = [
|
||||
event_from_pdu_json(p, outlier=True)
|
||||
for p in content.get("state", [])
|
||||
]
|
||||
auth_chain = [
|
||||
event_from_pdu_json(p, outlier=True)
|
||||
for p in content.get("auth_chain", [])
|
||||
]
|
||||
|
||||
auth_chain = [
|
||||
event_from_pdu_json(p, outlier=True)
|
||||
for p in content.get("auth_chain", [])
|
||||
]
|
||||
pdus = {
|
||||
p.event_id: p
|
||||
for p in itertools.chain(state, auth_chain)
|
||||
}
|
||||
|
||||
pdus = {
|
||||
p.event_id: p
|
||||
for p in itertools.chain(state, auth_chain)
|
||||
}
|
||||
valid_pdus = yield self._check_sigs_and_hash_and_fetch(
|
||||
destination, list(pdus.values()),
|
||||
outlier=True,
|
||||
)
|
||||
|
||||
valid_pdus = yield self._check_sigs_and_hash_and_fetch(
|
||||
destination, list(pdus.values()),
|
||||
outlier=True,
|
||||
)
|
||||
valid_pdus_map = {
|
||||
p.event_id: p
|
||||
for p in valid_pdus
|
||||
}
|
||||
|
||||
valid_pdus_map = {
|
||||
p.event_id: p
|
||||
for p in valid_pdus
|
||||
}
|
||||
# NB: We *need* to copy to ensure that we don't have multiple
|
||||
# references being passed on, as that causes... issues.
|
||||
signed_state = [
|
||||
copy.copy(valid_pdus_map[p.event_id])
|
||||
for p in state
|
||||
if p.event_id in valid_pdus_map
|
||||
]
|
||||
|
||||
# NB: We *need* to copy to ensure that we don't have multiple
|
||||
# references being passed on, as that causes... issues.
|
||||
signed_state = [
|
||||
copy.copy(valid_pdus_map[p.event_id])
|
||||
for p in state
|
||||
if p.event_id in valid_pdus_map
|
||||
]
|
||||
signed_auth = [
|
||||
valid_pdus_map[p.event_id]
|
||||
for p in auth_chain
|
||||
if p.event_id in valid_pdus_map
|
||||
]
|
||||
|
||||
signed_auth = [
|
||||
valid_pdus_map[p.event_id]
|
||||
for p in auth_chain
|
||||
if p.event_id in valid_pdus_map
|
||||
]
|
||||
# NB: We *need* to copy to ensure that we don't have multiple
|
||||
# references being passed on, as that causes... issues.
|
||||
for s in signed_state:
|
||||
s.internal_metadata = copy.deepcopy(s.internal_metadata)
|
||||
|
||||
# NB: We *need* to copy to ensure that we don't have multiple
|
||||
# references being passed on, as that causes... issues.
|
||||
for s in signed_state:
|
||||
s.internal_metadata = copy.deepcopy(s.internal_metadata)
|
||||
auth_chain.sort(key=lambda e: e.depth)
|
||||
|
||||
auth_chain.sort(key=lambda e: e.depth)
|
||||
|
||||
defer.returnValue({
|
||||
"state": signed_state,
|
||||
"auth_chain": signed_auth,
|
||||
"origin": destination,
|
||||
})
|
||||
except CodeMessageException as e:
|
||||
if not 500 <= e.code < 600:
|
||||
raise
|
||||
else:
|
||||
logger.exception(
|
||||
"Failed to send_join via %s: %s",
|
||||
destination, e.message
|
||||
)
|
||||
except Exception as e:
|
||||
logger.exception(
|
||||
"Failed to send_join via %s: %s",
|
||||
destination, e.message
|
||||
)
|
||||
|
||||
raise RuntimeError("Failed to send to any server.")
|
||||
defer.returnValue({
|
||||
"state": signed_state,
|
||||
"auth_chain": signed_auth,
|
||||
"origin": destination,
|
||||
})
|
||||
return self._try_destination_list("send_join", destinations, send_request)
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def send_invite(self, destination, room_id, event_id, pdu):
|
||||
@ -663,7 +693,6 @@ class FederationClient(FederationBase):
|
||||
|
||||
defer.returnValue(pdu)
|
||||
|
||||
@defer.inlineCallbacks
|
||||
def send_leave(self, destinations, pdu):
|
||||
"""Sends a leave event to one of a list of homeservers.
|
||||
|
||||
@ -681,34 +710,24 @@ class FederationClient(FederationBase):
|
||||
Deferred: resolves to None.
|
||||
|
||||
Fails with a ``CodeMessageException`` if the chosen remote server
|
||||
returns a non-200 code.
|
||||
returns a 300/400 code.
|
||||
|
||||
Fails with a ``RuntimeError`` if no servers were reachable.
|
||||
"""
|
||||
for destination in destinations:
|
||||
if destination == self.server_name:
|
||||
continue
|
||||
@defer.inlineCallbacks
|
||||
def send_request(destination):
|
||||
time_now = self._clock.time_msec()
|
||||
_, content = yield self.transport_layer.send_leave(
|
||||
destination=destination,
|
||||
room_id=pdu.room_id,
|
||||
event_id=pdu.event_id,
|
||||
content=pdu.get_pdu_json(time_now),
|
||||
)
|
||||
|
||||
try:
|
||||
time_now = self._clock.time_msec()
|
||||
_, content = yield self.transport_layer.send_leave(
|
||||
destination=destination,
|
||||
room_id=pdu.room_id,
|
||||
event_id=pdu.event_id,
|
||||
content=pdu.get_pdu_json(time_now),
|
||||
)
|
||||
logger.debug("Got content: %s", content)
|
||||
defer.returnValue(None)
|
||||
|
||||
logger.debug("Got content: %s", content)
|
||||
defer.returnValue(None)
|
||||
except CodeMessageException:
|
||||
raise
|
||||
except Exception as e:
|
||||
logger.exception(
|
||||
"Failed to send_leave via %s: %s",
|
||||
destination, e.message
|
||||
)
|
||||
|
||||
raise RuntimeError("Failed to send to any server.")
|
||||
return self._try_destination_list("send_leave", destinations, send_request)
|
||||
|
||||
def get_public_rooms(self, destination, limit=None, since_token=None,
|
||||
search_filter=None, include_all_networks=False,
|
||||
|
||||
Loading…
Reference in New Issue
Block a user