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Merge pull request #2109 from matrix-org/erikj/send_queue_fix

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Fix up federation SendQueue and document types
This commit is contained in:
Erik Johnston 2017-04-10 13:09:25 +01:00 committed by GitHub
commit efcb6db688
3 changed files with 246 additions and 93 deletions
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66
synapse/app/federation_sender.py
View File

@ -23,7 +23,6 @@ from synapse.config.homeserver import HomeServerConfig
from synapse.crypto import context_factory
from synapse.http.site import SynapseSite
from synapse.federation import send_queue
from synapse.federation.units import Edu
from synapse.metrics.resource import MetricsResource, METRICS_PREFIX
from synapse.replication.slave.storage.deviceinbox import SlavedDeviceInboxStore
from synapse.replication.slave.storage.events import SlavedEventStore
@ -33,7 +32,6 @@ from synapse.replication.slave.storage.transactions import TransactionStore
from synapse.replication.slave.storage.devices import SlavedDeviceStore
from synapse.replication.tcp.client import ReplicationClientHandler
from synapse.storage.engines import create_engine
from synapse.storage.presence import UserPresenceState
from synapse.util.async import Linearizer
from synapse.util.httpresourcetree import create_resource_tree
from synapse.util.logcontext import LoggingContext, PreserveLoggingContext, preserve_fn
@ -277,69 +275,7 @@ class FederationSenderHandler(object):
# The federation stream contains things that we want to send out, e.g.
# presence, typing, etc.
if stream_name == "federation":
# The federation stream containis a bunch of different types of
# rows that need to be handled differently. We parse the rows, put
# them into the appropriate collection and then send them off.
presence_to_send = {}
keyed_edus = {}
edus = {}
failures = {}
device_destinations = set()
# Parse the rows in the stream
for row in rows:
typ = row.type
content = row.data
if typ == send_queue.PRESENCE_TYPE:
destination = content["destination"]
state = UserPresenceState.from_dict(content["state"])
presence_to_send.setdefault(destination, []).append(state)
elif typ == send_queue.KEYED_EDU_TYPE:
key = content["key"]
edu = Edu(**content["edu"])
keyed_edus.setdefault(
edu.destination, {}
)[(edu.destination, tuple(key))] = edu
elif typ == send_queue.EDU_TYPE:
edu = Edu(**content)
edus.setdefault(edu.destination, []).append(edu)
elif typ == send_queue.FAILURE_TYPE:
destination = content["destination"]
failure = content["failure"]
failures.setdefault(destination, []).append(failure)
elif typ == send_queue.DEVICE_MESSAGE_TYPE:
device_destinations.add(content["destination"])
else:
raise Exception("Unrecognised federation type: %r", typ)
# We've finished collecting, send everything off
for destination, states in presence_to_send.items():
self.federation_sender.send_presence(destination, states)
for destination, edu_map in keyed_edus.items():
for key, edu in edu_map.items():
self.federation_sender.send_edu(
edu.destination, edu.edu_type, edu.content, key=key,
)
for destination, edu_list in edus.items():
for edu in edu_list:
self.federation_sender.send_edu(
edu.destination, edu.edu_type, edu.content, key=None,
)
for destination, failure_list in failures.items():
for failure in failure_list:
self.federation_sender.send_failure(destination, failure)
for destination in device_destinations:
self.federation_sender.send_device_messages(destination)
send_queue.process_rows_for_federation(self.federation_sender, rows)
preserve_fn(self.update_token)(token)
# We also need to poke the federation sender when new events happen

269
synapse/federation/send_queue.py
View File

@ -31,22 +31,21 @@ Events are replicated via a separate events stream.
from .units import Edu
from synapse.storage.presence import UserPresenceState
from synapse.util.metrics import Measure
import synapse.metrics
from blist import sorteddict
from collections import namedtuple
import logging
logger = logging.getLogger(__name__)
metrics = synapse.metrics.get_metrics_for(__name__)
PRESENCE_TYPE = "p"
KEYED_EDU_TYPE = "k"
EDU_TYPE = "e"
FAILURE_TYPE = "f"
DEVICE_MESSAGE_TYPE = "d"
class FederationRemoteSendQueue(object):
"""A drop in replacement for TransactionQueue"""
@ -239,6 +238,8 @@ class FederationRemoteSendQueue(object):
if from_token > self.pos:
from_token = -1
# list of tuple(int, BaseFederationRow), where the first is the position
# of the federation stream.
rows = []
# There should be only one reader, so lets delete everything its
@ -257,10 +258,10 @@ class FederationRemoteSendQueue(object):
)
for (key, (dest, user_id)) in dest_user_ids:
rows.append((key, PRESENCE_TYPE, {
"destination": dest,
"state": self.presence_map[user_id].as_dict(),
}))
rows.append((key, PresenceRow(
destination=dest,
state=self.presence_map[user_id],
)))
# Fetch changes keyed edus
keys = self.keyed_edu_changed.keys()
@ -269,12 +270,10 @@ class FederationRemoteSendQueue(object):
keyed_edus = set((k, self.keyed_edu_changed[k]) for k in keys[i:j])
for (pos, (destination, edu_key)) in keyed_edus:
rows.append(
(pos, KEYED_EDU_TYPE, {
"key": edu_key,
"edu": self.keyed_edu[(destination, edu_key)].get_internal_dict(),
})
)
rows.append((pos, KeyedEduRow(
key=edu_key,
edu=self.keyed_edu[(destination, edu_key)],
)))
# Fetch changed edus
keys = self.edus.keys()
@ -283,7 +282,7 @@ class FederationRemoteSendQueue(object):
edus = set((k, self.edus[k]) for k in keys[i:j])
for (pos, edu) in edus:
rows.append((pos, EDU_TYPE, edu.get_internal_dict()))
rows.append((pos, EduRow(edu)))
# Fetch changed failures
keys = self.failures.keys()
@ -292,10 +291,10 @@ class FederationRemoteSendQueue(object):
failures = set((k, self.failures[k]) for k in keys[i:j])
for (pos, (destination, failure)) in failures:
rows.append((pos, FAILURE_TYPE, {
"destination": destination,
"failure": failure,
}))
rows.append((pos, FailureRow(
destination=destination,
failure=failure,
)))
# Fetch changed device messages
keys = self.device_messages.keys()
@ -304,11 +303,229 @@ class FederationRemoteSendQueue(object):
device_messages = set((k, self.device_messages[k]) for k in keys[i:j])
for (pos, destination) in device_messages:
rows.append((pos, DEVICE_MESSAGE_TYPE, {
"destination": destination,
}))
rows.append((pos, DeviceRow(
destination=destination,
)))
# Sort rows based on pos
rows.sort()
return rows
return [(pos, row.TypeId, row.to_data()) for pos, row in rows]
class BaseFederationRow(object):
"""Base class for rows to be sent in the federation stream.
Specifies how to identify, serialize and deserialize the different types.
"""
TypeId = None # Unique string that ids the type. Must be overriden in sub classes.
@staticmethod
def from_data(data):
"""Parse the data from the federation stream into a row.
Args:
data: The value of ``data`` from FederationStreamRow.data, type
depends on the type of stream
"""
raise NotImplementedError()
def to_data(self):
"""Serialize this row to be sent over the federation stream.
Returns:
The value to be sent in FederationStreamRow.data. The type depends
on the type of stream.
"""
raise NotImplementedError()
def add_to_buffer(self, buff):
"""Add this row to the appropriate field in the buffer ready for this
to be sent over federation.
We use a buffer so that we can batch up events that have come in at
the same time and send them all at once.
Args:
buff (BufferedToSend)
"""
raise NotImplementedError()
class PresenceRow(BaseFederationRow, namedtuple("PresenceRow", (
"destination", # str
"state", # UserPresenceState
))):
TypeId = "p"
@staticmethod
def from_data(data):
return PresenceRow(
destination=data["destination"],
state=UserPresenceState.from_dict(data["state"])
)
def to_data(self):
return {
"destination": self.destination,
"state": self.state.as_dict()
}
def add_to_buffer(self, buff):
buff.presence.setdefault(self.destination, []).append(self.state)
class KeyedEduRow(BaseFederationRow, namedtuple("KeyedEduRow", (
"key", # tuple(str) - the edu key passed to send_edu
"edu", # Edu
))):
TypeId = "k"
@staticmethod
def from_data(data):
return KeyedEduRow(
key=tuple(data["key"]),
edu=Edu(**data["edu"]),
)
def to_data(self):
return {
"key": self.key,
"edu": self.edu.get_internal_dict(),
}
def add_to_buffer(self, buff):
buff.keyed_edus.setdefault(
self.edu.destination, {}
)[self.key] = self.edu
class EduRow(BaseFederationRow, namedtuple("EduRow", (
"edu", # Edu
))):
TypeId = "e"
@staticmethod
def from_data(data):
return EduRow(Edu(**data))
def to_data(self):
return self.edu.get_internal_dict()
def add_to_buffer(self, buff):
buff.edus.setdefault(self.edu.destination, []).append(self.edu)
class FailureRow(BaseFederationRow, namedtuple("FailureRow", (
"destination", # str
"failure",
))):
TypeId = "f"
@staticmethod
def from_data(data):
return FailureRow(
destination=data["destination"],
failure=data["failure"],
)
def to_data(self):
return {
"destination": self.destination,
"failure": self.failure,
}
def add_to_buffer(self, buff):
buff.failures.setdefault(self.destination, []).append(self.failure)
class DeviceRow(BaseFederationRow, namedtuple("DeviceRow", (
"destination", # str
))):
TypeId = "d"
@staticmethod
def from_data(data):
return DeviceRow(destination=data["destination"])
def to_data(self):
return {"destination": self.destination}
def add_to_buffer(self, buff):
buff.device_destinations.add(self.destination)
TypeToRow = {
Row.TypeId: Row
for Row in (
PresenceRow,
KeyedEduRow,
EduRow,
FailureRow,
DeviceRow,
)
}
ParsedFederationStreamData = namedtuple("ParsedFederationStreamData", (
"presence", # dict of destination -> [UserPresenceState]
"keyed_edus", # dict of destination -> { key -> Edu }
"edus", # dict of destination -> [Edu]
"failures", # dict of destination -> [failures]
"device_destinations", # set of destinations
))
def process_rows_for_federation(transaction_queue, rows):
"""Parse a list of rows from the federation stream and put them in the
transaction queue ready for sending to the relevant homeservers.
Args:
transaction_queue (TransactionQueue)
rows (list(synapse.replication.tcp.streams.FederationStreamRow))
"""
# The federation stream contains a bunch of different types of
# rows that need to be handled differently. We parse the rows, put
# them into the appropriate collection and then send them off.
buff = ParsedFederationStreamData(
presence={},
keyed_edus={},
edus={},
failures={},
device_destinations=set(),
)
# Parse the rows in the stream and add to the buffer
for row in rows:
if row.type not in TypeToRow:
logger.error("Unrecognized federation row type %r", row.type)
continue
RowType = TypeToRow[row.type]
parsed_row = RowType.from_data(row.data)
parsed_row.add_to_buffer(buff)
for destination, states in buff.presence.iteritems():
transaction_queue.send_presence(destination, states)
for destination, edu_map in buff.keyed_edus.iteritems():
for key, edu in edu_map.items():
transaction_queue.send_edu(
edu.destination, edu.edu_type, edu.content, key=key,
)
for destination, edu_list in buff.edus.iteritems():
for edu in edu_list:
transaction_queue.send_edu(
edu.destination, edu.edu_type, edu.content, key=None,
)
for destination, failure_list in buff.failures.iteritems():
for failure in failure_list:
transaction_queue.send_failure(destination, failure)
for destination in buff.device_destinations:
transaction_queue.send_device_messages(destination)

4
synapse/replication/tcp/streams.py
View File

@ -98,8 +98,8 @@ ToDeviceStreamRow = namedtuple("ToDeviceStreamRow", (
"entity", # str
))
FederationStreamRow = namedtuple("FederationStreamRow", (
"type", # str
"data", # dict
"type", # str, the type of data as defined in the BaseFederationRows
"data", # dict, serialization of a federation.send_queue.BaseFederationRow
))
TagAccountDataStreamRow = namedtuple("TagAccountDataStreamRow", (
"user_id", # str