diff options
| -rw-r--r-- | synapse/federation/replication.py | 291 | ||||
| -rw-r--r-- | synapse/federation/transaction_queue.py | 314 |
2 files changed, 316 insertions, 289 deletions
diff --git a/synapse/federation/replication.py b/synapse/federation/replication.py index 6620532a60..accf95e406 100644 --- a/synapse/federation/replication.py +++ b/synapse/federation/replication.py @@ -20,8 +20,8 @@ a given transport. from twisted.internet import defer from .units import Transaction, Edu - from .persistence import TransactionActions +from .transaction_queue import TransactionQueue from synapse.util.logutils import log_function from synapse.util.logcontext import PreserveLoggingContext @@ -62,7 +62,7 @@ class ReplicationLayer(object): # self.pdu_actions = PduActions(self.store) self.transaction_actions = TransactionActions(self.store) - self._transaction_queue = _TransactionQueue( + self._transaction_queue = TransactionQueue( hs, self.transaction_actions, transport_layer ) @@ -662,290 +662,3 @@ class ReplicationLayer(object): event.internal_metadata.outlier = outlier return event - - -class _TransactionQueue(object): - """This class makes sure we only have one transaction in flight at - a time for a given destination. - - It batches pending PDUs into single transactions. - """ - - def __init__(self, hs, transaction_actions, transport_layer): - self.server_name = hs.hostname - self.transaction_actions = transaction_actions - self.transport_layer = transport_layer - - self._clock = hs.get_clock() - self.store = hs.get_datastore() - - # Is a mapping from destinations -> deferreds. Used to keep track - # of which destinations have transactions in flight and when they are - # done - self.pending_transactions = {} - - # Is a mapping from destination -> list of - # tuple(pending pdus, deferred, order) - self.pending_pdus_by_dest = {} - # destination -> list of tuple(edu, deferred) - self.pending_edus_by_dest = {} - - # destination -> list of tuple(failure, deferred) - self.pending_failures_by_dest = {} - - # HACK to get unique tx id - self._next_txn_id = int(self._clock.time_msec()) - - @defer.inlineCallbacks - @log_function - def enqueue_pdu(self, pdu, destinations, order): - # We loop through all destinations to see whether we already have - # a transaction in progress. If we do, stick it in the pending_pdus - # table and we'll get back to it later. - - destinations = set(destinations) - destinations.discard(self.server_name) - destinations.discard("localhost") - - logger.debug("Sending to: %s", str(destinations)) - - if not destinations: - return - - deferreds = [] - - for destination in destinations: - deferred = defer.Deferred() - self.pending_pdus_by_dest.setdefault(destination, []).append( - (pdu, deferred, order) - ) - - def eb(failure): - if not deferred.called: - deferred.errback(failure) - else: - logger.warn("Failed to send pdu", failure) - - with PreserveLoggingContext(): - self._attempt_new_transaction(destination).addErrback(eb) - - deferreds.append(deferred) - - yield defer.DeferredList(deferreds) - - # NO inlineCallbacks - def enqueue_edu(self, edu): - destination = edu.destination - - if destination == self.server_name: - return - - deferred = defer.Deferred() - self.pending_edus_by_dest.setdefault(destination, []).append( - (edu, deferred) - ) - - def eb(failure): - if not deferred.called: - deferred.errback(failure) - else: - logger.warn("Failed to send edu", failure) - - with PreserveLoggingContext(): - self._attempt_new_transaction(destination).addErrback(eb) - - return deferred - - @defer.inlineCallbacks - def enqueue_failure(self, failure, destination): - deferred = defer.Deferred() - - self.pending_failures_by_dest.setdefault( - destination, [] - ).append( - (failure, deferred) - ) - - yield deferred - - @defer.inlineCallbacks - @log_function - def _attempt_new_transaction(self, destination): - - (retry_last_ts, retry_interval) = (0, 0) - retry_timings = yield self.store.get_destination_retry_timings( - destination - ) - if retry_timings: - (retry_last_ts, retry_interval) = ( - retry_timings.retry_last_ts, retry_timings.retry_interval - ) - if retry_last_ts + retry_interval > int(self._clock.time_msec()): - logger.info( - "TX [%s] not ready for retry yet - " - "dropping transaction for now", - destination, - ) - return - else: - logger.info("TX [%s] is ready for retry", destination) - - logger.info("TX [%s] _attempt_new_transaction", destination) - - if destination in self.pending_transactions: - # XXX: pending_transactions can get stuck on by a never-ending - # request at which point pending_pdus_by_dest just keeps growing. - # we need application-layer timeouts of some flavour of these - # requests - return - - # list of (pending_pdu, deferred, order) - pending_pdus = self.pending_pdus_by_dest.pop(destination, []) - pending_edus = self.pending_edus_by_dest.pop(destination, []) - pending_failures = self.pending_failures_by_dest.pop(destination, []) - - if pending_pdus: - logger.info("TX [%s] len(pending_pdus_by_dest[dest]) = %d", - destination, len(pending_pdus)) - - if not pending_pdus and not pending_edus and not pending_failures: - return - - logger.debug( - "TX [%s] Attempting new transaction" - " (pdus: %d, edus: %d, failures: %d)", - destination, - len(pending_pdus), - len(pending_edus), - len(pending_failures) - ) - - # Sort based on the order field - pending_pdus.sort(key=lambda t: t[2]) - - pdus = [x[0] for x in pending_pdus] - edus = [x[0] for x in pending_edus] - failures = [x[0].get_dict() for x in pending_failures] - deferreds = [ - x[1] - for x in pending_pdus + pending_edus + pending_failures - ] - - try: - self.pending_transactions[destination] = 1 - - logger.debug("TX [%s] Persisting transaction...", destination) - - transaction = Transaction.create_new( - origin_server_ts=int(self._clock.time_msec()), - transaction_id=str(self._next_txn_id), - origin=self.server_name, - destination=destination, - pdus=pdus, - edus=edus, - pdu_failures=failures, - ) - - self._next_txn_id += 1 - - yield self.transaction_actions.prepare_to_send(transaction) - - logger.debug("TX [%s] Persisted transaction", destination) - logger.info( - "TX [%s] Sending transaction [%s]", - destination, - transaction.transaction_id, - ) - - # Actually send the transaction - - # FIXME (erikj): This is a bit of a hack to make the Pdu age - # keys work - def json_data_cb(): - data = transaction.get_dict() - now = int(self._clock.time_msec()) - if "pdus" in data: - for p in data["pdus"]: - if "age_ts" in p: - unsigned = p.setdefault("unsigned", {}) - unsigned["age"] = now - int(p["age_ts"]) - del p["age_ts"] - return data - - code, response = yield self.transport_layer.send_transaction( - transaction, json_data_cb - ) - - logger.info("TX [%s] got %d response", destination, code) - - logger.debug("TX [%s] Sent transaction", destination) - logger.debug("TX [%s] Marking as delivered...", destination) - - yield self.transaction_actions.delivered( - transaction, code, response - ) - - logger.debug("TX [%s] Marked as delivered", destination) - logger.debug("TX [%s] Yielding to callbacks...", destination) - - for deferred in deferreds: - if code == 200: - if retry_last_ts: - # this host is alive! reset retry schedule - yield self.store.set_destination_retry_timings( - destination, 0, 0 - ) - deferred.callback(None) - else: - self.set_retrying(destination, retry_interval) - deferred.errback(RuntimeError("Got status %d" % code)) - - # Ensures we don't continue until all callbacks on that - # deferred have fired - try: - yield deferred - except: - pass - - logger.debug("TX [%s] Yielded to callbacks", destination) - - except Exception as e: - # We capture this here as there as nothing actually listens - # for this finishing functions deferred. - logger.warn( - "TX [%s] Problem in _attempt_transaction: %s", - destination, - e, - ) - - self.set_retrying(destination, retry_interval) - - for deferred in deferreds: - if not deferred.called: - deferred.errback(e) - - finally: - # We want to be *very* sure we delete this after we stop processing - self.pending_transactions.pop(destination, None) - - # Check to see if there is anything else to send. - self._attempt_new_transaction(destination) - - @defer.inlineCallbacks - def set_retrying(self, destination, retry_interval): - # track that this destination is having problems and we should - # give it a chance to recover before trying it again - - if retry_interval: - retry_interval *= 2 - # plateau at hourly retries for now - if retry_interval >= 60 * 60 * 1000: - retry_interval = 60 * 60 * 1000 - else: - retry_interval = 2000 # try again at first after 2 seconds - - yield self.store.set_destination_retry_timings( - destination, - int(self._clock.time_msec()), - retry_interval - ) diff --git a/synapse/federation/transaction_queue.py b/synapse/federation/transaction_queue.py new file mode 100644 index 0000000000..c2cb4a1c49 --- /dev/null +++ b/synapse/federation/transaction_queue.py @@ -0,0 +1,314 @@ +# -*- coding: utf-8 -*- +# Copyright 2014, 2015 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. + + +from twisted.internet import defer + +from .units import Transaction + +from synapse.util.logutils import log_function +from synapse.util.logcontext import PreserveLoggingContext + +import logging + + +logger = logging.getLogger(__name__) + + +class TransactionQueue(object): + """This class makes sure we only have one transaction in flight at + a time for a given destination. + + It batches pending PDUs into single transactions. + """ + + def __init__(self, hs, transaction_actions, transport_layer): + self.server_name = hs.hostname + self.transaction_actions = transaction_actions + self.transport_layer = transport_layer + + self._clock = hs.get_clock() + self.store = hs.get_datastore() + + # Is a mapping from destinations -> deferreds. Used to keep track + # of which destinations have transactions in flight and when they are + # done + self.pending_transactions = {} + + # Is a mapping from destination -> list of + # tuple(pending pdus, deferred, order) + self.pending_pdus_by_dest = {} + # destination -> list of tuple(edu, deferred) + self.pending_edus_by_dest = {} + + # destination -> list of tuple(failure, deferred) + self.pending_failures_by_dest = {} + + # HACK to get unique tx id + self._next_txn_id = int(self._clock.time_msec()) + + @defer.inlineCallbacks + @log_function + def enqueue_pdu(self, pdu, destinations, order): + # We loop through all destinations to see whether we already have + # a transaction in progress. If we do, stick it in the pending_pdus + # table and we'll get back to it later. + + destinations = set(destinations) + destinations.discard(self.server_name) + destinations.discard("localhost") + + logger.debug("Sending to: %s", str(destinations)) + + if not destinations: + return + + deferreds = [] + + for destination in destinations: + deferred = defer.Deferred() + self.pending_pdus_by_dest.setdefault(destination, []).append( + (pdu, deferred, order) + ) + + def eb(failure): + if not deferred.called: + deferred.errback(failure) + else: + logger.warn("Failed to send pdu", failure) + + with PreserveLoggingContext(): + self._attempt_new_transaction(destination).addErrback(eb) + + deferreds.append(deferred) + + yield defer.DeferredList(deferreds) + + # NO inlineCallbacks + def enqueue_edu(self, edu): + destination = edu.destination + + if destination == self.server_name: + return + + deferred = defer.Deferred() + self.pending_edus_by_dest.setdefault(destination, []).append( + (edu, deferred) + ) + + def eb(failure): + if not deferred.called: + deferred.errback(failure) + else: + logger.warn("Failed to send edu", failure) + + with PreserveLoggingContext(): + self._attempt_new_transaction(destination).addErrback(eb) + + return deferred + + @defer.inlineCallbacks + def enqueue_failure(self, failure, destination): + deferred = defer.Deferred() + + self.pending_failures_by_dest.setdefault( + destination, [] + ).append( + (failure, deferred) + ) + + yield deferred + + @defer.inlineCallbacks + @log_function + def _attempt_new_transaction(self, destination): + + (retry_last_ts, retry_interval) = (0, 0) + retry_timings = yield self.store.get_destination_retry_timings( + destination + ) + if retry_timings: + (retry_last_ts, retry_interval) = ( + retry_timings.retry_last_ts, retry_timings.retry_interval + ) + if retry_last_ts + retry_interval > int(self._clock.time_msec()): + logger.info( + "TX [%s] not ready for retry yet - " + "dropping transaction for now", + destination, + ) + return + else: + logger.info("TX [%s] is ready for retry", destination) + + logger.info("TX [%s] _attempt_new_transaction", destination) + + if destination in self.pending_transactions: + # XXX: pending_transactions can get stuck on by a never-ending + # request at which point pending_pdus_by_dest just keeps growing. + # we need application-layer timeouts of some flavour of these + # requests + return + + # list of (pending_pdu, deferred, order) + pending_pdus = self.pending_pdus_by_dest.pop(destination, []) + pending_edus = self.pending_edus_by_dest.pop(destination, []) + pending_failures = self.pending_failures_by_dest.pop(destination, []) + + if pending_pdus: + logger.info("TX [%s] len(pending_pdus_by_dest[dest]) = %d", + destination, len(pending_pdus)) + + if not pending_pdus and not pending_edus and not pending_failures: + return + + logger.debug( + "TX [%s] Attempting new transaction" + " (pdus: %d, edus: %d, failures: %d)", + destination, + len(pending_pdus), + len(pending_edus), + len(pending_failures) + ) + + # Sort based on the order field + pending_pdus.sort(key=lambda t: t[2]) + + pdus = [x[0] for x in pending_pdus] + edus = [x[0] for x in pending_edus] + failures = [x[0].get_dict() for x in pending_failures] + deferreds = [ + x[1] + for x in pending_pdus + pending_edus + pending_failures + ] + + try: + self.pending_transactions[destination] = 1 + + logger.debug("TX [%s] Persisting transaction...", destination) + + transaction = Transaction.create_new( + origin_server_ts=int(self._clock.time_msec()), + transaction_id=str(self._next_txn_id), + origin=self.server_name, + destination=destination, + pdus=pdus, + edus=edus, + pdu_failures=failures, + ) + + self._next_txn_id += 1 + + yield self.transaction_actions.prepare_to_send(transaction) + + logger.debug("TX [%s] Persisted transaction", destination) + logger.info( + "TX [%s] Sending transaction [%s]", + destination, + transaction.transaction_id, + ) + + # Actually send the transaction + + # FIXME (erikj): This is a bit of a hack to make the Pdu age + # keys work + def json_data_cb(): + data = transaction.get_dict() + now = int(self._clock.time_msec()) + if "pdus" in data: + for p in data["pdus"]: + if "age_ts" in p: + unsigned = p.setdefault("unsigned", {}) + unsigned["age"] = now - int(p["age_ts"]) + del p["age_ts"] + return data + + code, response = yield self.transport_layer.send_transaction( + transaction, json_data_cb + ) + + logger.info("TX [%s] got %d response", destination, code) + + logger.debug("TX [%s] Sent transaction", destination) + logger.debug("TX [%s] Marking as delivered...", destination) + + yield self.transaction_actions.delivered( + transaction, code, response + ) + + logger.debug("TX [%s] Marked as delivered", destination) + logger.debug("TX [%s] Yielding to callbacks...", destination) + + for deferred in deferreds: + if code == 200: + if retry_last_ts: + # this host is alive! reset retry schedule + yield self.store.set_destination_retry_timings( + destination, 0, 0 + ) + deferred.callback(None) + else: + self.set_retrying(destination, retry_interval) + deferred.errback(RuntimeError("Got status %d" % code)) + + # Ensures we don't continue until all callbacks on that + # deferred have fired + try: + yield deferred + except: + pass + + logger.debug("TX [%s] Yielded to callbacks", destination) + + except Exception as e: + # We capture this here as there as nothing actually listens + # for this finishing functions deferred. + logger.warn( + "TX [%s] Problem in _attempt_transaction: %s", + destination, + e, + ) + + self.set_retrying(destination, retry_interval) + + for deferred in deferreds: + if not deferred.called: + deferred.errback(e) + + finally: + # We want to be *very* sure we delete this after we stop processing + self.pending_transactions.pop(destination, None) + + # Check to see if there is anything else to send. + self._attempt_new_transaction(destination) + + @defer.inlineCallbacks + def set_retrying(self, destination, retry_interval): + # track that this destination is having problems and we should + # give it a chance to recover before trying it again + + if retry_interval: + retry_interval *= 2 + # plateau at hourly retries for now + if retry_interval >= 60 * 60 * 1000: + retry_interval = 60 * 60 * 1000 + else: + retry_interval = 2000 # try again at first after 2 seconds + + yield self.store.set_destination_retry_timings( + destination, + int(self._clock.time_msec()), + retry_interval + ) |