diff options
Diffstat (limited to 'synapse')
| -rwxr-xr-x | synapse/app/synctl.py | 4 | ||||
| -rw-r--r-- | synapse/appservice/__init__.py | 6 | ||||
| -rw-r--r-- | synapse/appservice/api.py | 22 | ||||
| -rw-r--r-- | synapse/crypto/keyring.py | 31 | ||||
| -rw-r--r-- | synapse/federation/send_queue.py | 63 | ||||
| -rw-r--r-- | synapse/http/__init__.py | 13 | ||||
| -rw-r--r-- | synapse/http/client.py | 9 | ||||
| -rw-r--r-- | synapse/http/site.py | 9 | ||||
| -rw-r--r-- | synapse/python_dependencies.py | 4 | ||||
| -rw-r--r-- | synapse/rest/client/v1/admin.py | 12 | ||||
| -rw-r--r-- | synapse/storage/roommember.py | 26 | ||||
| -rw-r--r-- | synapse/storage/state.py | 6 | ||||
| -rw-r--r-- | synapse/util/caches/__init__.py | 10 | ||||
| -rw-r--r-- | synapse/util/caches/descriptors.py | 4 | ||||
| -rw-r--r-- | synapse/util/caches/stream_change_cache.py | 57 |
15 files changed, 159 insertions, 117 deletions
diff --git a/synapse/app/synctl.py b/synapse/app/synctl.py index 712dfa870e..56ae086128 100755 --- a/synapse/app/synctl.py +++ b/synapse/app/synctl.py @@ -171,6 +171,10 @@ def main(): if cache_factor: os.environ["SYNAPSE_CACHE_FACTOR"] = str(cache_factor) + cache_factors = config.get("synctl_cache_factors", {}) + for cache_name, factor in cache_factors.iteritems(): + os.environ["SYNAPSE_CACHE_FACTOR_" + cache_name.upper()] = str(factor) + worker_configfiles = [] if options.worker: start_stop_synapse = False diff --git a/synapse/appservice/__init__.py b/synapse/appservice/__init__.py index 5fdb579723..d1c598622a 100644 --- a/synapse/appservice/__init__.py +++ b/synapse/appservice/__init__.py @@ -292,4 +292,8 @@ class ApplicationService(object): return self.rate_limited def __str__(self): - return "ApplicationService: %s" % (self.__dict__,) + # copy dictionary and redact token fields so they don't get logged + dict_copy = self.__dict__.copy() + dict_copy["token"] = "<redacted>" + dict_copy["hs_token"] = "<redacted>" + return "ApplicationService: %s" % (dict_copy,) diff --git a/synapse/appservice/api.py b/synapse/appservice/api.py index 00efff1464..47251fb6ad 100644 --- a/synapse/appservice/api.py +++ b/synapse/appservice/api.py @@ -24,8 +24,27 @@ from synapse.types import ThirdPartyInstanceID import logging import urllib +from prometheus_client import Counter + logger = logging.getLogger(__name__) +sent_transactions_counter = Counter( + "synapse_appservice_api_sent_transactions", + "Number of /transactions/ requests sent", + ["service"] +) + +failed_transactions_counter = Counter( + "synapse_appservice_api_failed_transactions", + "Number of /transactions/ requests that failed to send", + ["service"] +) + +sent_events_counter = Counter( + "synapse_appservice_api_sent_events", + "Number of events sent to the AS", + ["service"] +) HOUR_IN_MS = 60 * 60 * 1000 @@ -219,12 +238,15 @@ class ApplicationServiceApi(SimpleHttpClient): args={ "access_token": service.hs_token }) + sent_transactions_counter.labels(service.id).inc() + sent_events_counter.labels(service.id).inc(len(events)) defer.returnValue(True) return except CodeMessageException as e: logger.warning("push_bulk to %s received %s", uri, e.code) except Exception as ex: logger.warning("push_bulk to %s threw exception %s", uri, ex) + failed_transactions_counter.labels(service.id).inc() defer.returnValue(False) def _serialize(self, events): diff --git a/synapse/crypto/keyring.py b/synapse/crypto/keyring.py index 22ee0fc93f..9b17ef0a08 100644 --- a/synapse/crypto/keyring.py +++ b/synapse/crypto/keyring.py @@ -27,10 +27,12 @@ from synapse.util.metrics import Measure from twisted.internet import defer from signedjson.sign import ( - verify_signed_json, signature_ids, sign_json, encode_canonical_json + verify_signed_json, signature_ids, sign_json, encode_canonical_json, + SignatureVerifyException, ) from signedjson.key import ( - is_signing_algorithm_supported, decode_verify_key_bytes + is_signing_algorithm_supported, decode_verify_key_bytes, + encode_verify_key_base64, ) from unpaddedbase64 import decode_base64, encode_base64 @@ -56,7 +58,7 @@ Attributes: key_ids(set(str)): The set of key_ids to that could be used to verify the JSON object json_object(dict): The JSON object to verify. - deferred(twisted.internet.defer.Deferred): + deferred(Deferred[str, str, nacl.signing.VerifyKey]): A deferred (server_name, key_id, verify_key) tuple that resolves when a verify key has been fetched. The deferreds' callbacks are run with no logcontext. @@ -736,6 +738,17 @@ class Keyring(object): @defer.inlineCallbacks def _handle_key_deferred(verify_request): + """Waits for the key to become available, and then performs a verification + + Args: + verify_request (VerifyKeyRequest): + + Returns: + Deferred[None] + + Raises: + SynapseError if there was a problem performing the verification + """ server_name = verify_request.server_name try: with PreserveLoggingContext(): @@ -768,11 +781,17 @@ def _handle_key_deferred(verify_request): )) try: verify_signed_json(json_object, server_name, verify_key) - except Exception: + except SignatureVerifyException as e: + logger.debug( + "Error verifying signature for %s:%s:%s with key %s: %s", + server_name, verify_key.alg, verify_key.version, + encode_verify_key_base64(verify_key), + str(e), + ) raise SynapseError( 401, - "Invalid signature for server %s with key %s:%s" % ( - server_name, verify_key.alg, verify_key.version + "Invalid signature for server %s with key %s:%s: %s" % ( + server_name, verify_key.alg, verify_key.version, str(e), ), Codes.UNAUTHORIZED, ) diff --git a/synapse/federation/send_queue.py b/synapse/federation/send_queue.py index 9f1142b5a9..1d5c0f3797 100644 --- a/synapse/federation/send_queue.py +++ b/synapse/federation/send_queue.py @@ -35,7 +35,7 @@ from synapse.storage.presence import UserPresenceState from synapse.util.metrics import Measure from synapse.metrics import LaterGauge -from blist import sorteddict +from sortedcontainers import SortedDict from collections import namedtuple import logging @@ -55,19 +55,19 @@ class FederationRemoteSendQueue(object): self.is_mine_id = hs.is_mine_id self.presence_map = {} # Pending presence map user_id -> UserPresenceState - self.presence_changed = sorteddict() # Stream position -> user_id + self.presence_changed = SortedDict() # Stream position -> user_id self.keyed_edu = {} # (destination, key) -> EDU - self.keyed_edu_changed = sorteddict() # stream position -> (destination, key) + self.keyed_edu_changed = SortedDict() # stream position -> (destination, key) - self.edus = sorteddict() # stream position -> Edu + self.edus = SortedDict() # stream position -> Edu - self.failures = sorteddict() # stream position -> (destination, Failure) + self.failures = SortedDict() # stream position -> (destination, Failure) - self.device_messages = sorteddict() # stream position -> destination + self.device_messages = SortedDict() # stream position -> destination self.pos = 1 - self.pos_time = sorteddict() + self.pos_time = SortedDict() # EVERYTHING IS SAD. In particular, python only makes new scopes when # we make a new function, so we need to make a new function so the inner @@ -98,7 +98,7 @@ class FederationRemoteSendQueue(object): now = self.clock.time_msec() keys = self.pos_time.keys() - time = keys.bisect_left(now - FIVE_MINUTES_AGO) + time = self.pos_time.bisect_left(now - FIVE_MINUTES_AGO) if not keys[:time]: return @@ -113,7 +113,7 @@ class FederationRemoteSendQueue(object): with Measure(self.clock, "send_queue._clear"): # Delete things out of presence maps keys = self.presence_changed.keys() - i = keys.bisect_left(position_to_delete) + i = self.presence_changed.bisect_left(position_to_delete) for key in keys[:i]: del self.presence_changed[key] @@ -131,7 +131,7 @@ class FederationRemoteSendQueue(object): # Delete things out of keyed edus keys = self.keyed_edu_changed.keys() - i = keys.bisect_left(position_to_delete) + i = self.keyed_edu_changed.bisect_left(position_to_delete) for key in keys[:i]: del self.keyed_edu_changed[key] @@ -145,19 +145,19 @@ class FederationRemoteSendQueue(object): # Delete things out of edu map keys = self.edus.keys() - i = keys.bisect_left(position_to_delete) + i = self.edus.bisect_left(position_to_delete) for key in keys[:i]: del self.edus[key] # Delete things out of failure map keys = self.failures.keys() - i = keys.bisect_left(position_to_delete) + i = self.failures.bisect_left(position_to_delete) for key in keys[:i]: del self.failures[key] # Delete things out of device map keys = self.device_messages.keys() - i = keys.bisect_left(position_to_delete) + i = self.device_messages.bisect_left(position_to_delete) for key in keys[:i]: del self.device_messages[key] @@ -250,13 +250,12 @@ class FederationRemoteSendQueue(object): self._clear_queue_before_pos(federation_ack) # Fetch changed presence - keys = self.presence_changed.keys() - i = keys.bisect_right(from_token) - j = keys.bisect_right(to_token) + 1 + i = self.presence_changed.bisect_right(from_token) + j = self.presence_changed.bisect_right(to_token) + 1 dest_user_ids = [ (pos, user_id) - for pos in keys[i:j] - for user_id in self.presence_changed[pos] + for pos, user_id_list in self.presence_changed.items()[i:j] + for user_id in user_id_list ] for (key, user_id) in dest_user_ids: @@ -265,13 +264,12 @@ class FederationRemoteSendQueue(object): ))) # Fetch changes keyed edus - keys = self.keyed_edu_changed.keys() - i = keys.bisect_right(from_token) - j = keys.bisect_right(to_token) + 1 + i = self.keyed_edu_changed.bisect_right(from_token) + j = self.keyed_edu_changed.bisect_right(to_token) + 1 # We purposefully clobber based on the key here, python dict comprehensions # always use the last value, so this will correctly point to the last # stream position. - keyed_edus = {self.keyed_edu_changed[k]: k for k in keys[i:j]} + keyed_edus = {v: k for k, v in self.keyed_edu_changed.items()[i:j]} for ((destination, edu_key), pos) in iteritems(keyed_edus): rows.append((pos, KeyedEduRow( @@ -280,19 +278,17 @@ class FederationRemoteSendQueue(object): ))) # Fetch changed edus - keys = self.edus.keys() - i = keys.bisect_right(from_token) - j = keys.bisect_right(to_token) + 1 - edus = ((k, self.edus[k]) for k in keys[i:j]) + i = self.edus.bisect_right(from_token) + j = self.edus.bisect_right(to_token) + 1 + edus = self.edus.items()[i:j] for (pos, edu) in edus: rows.append((pos, EduRow(edu))) # Fetch changed failures - keys = self.failures.keys() - i = keys.bisect_right(from_token) - j = keys.bisect_right(to_token) + 1 - failures = ((k, self.failures[k]) for k in keys[i:j]) + i = self.failures.bisect_right(from_token) + j = self.failures.bisect_right(to_token) + 1 + failures = self.failures.items()[i:j] for (pos, (destination, failure)) in failures: rows.append((pos, FailureRow( @@ -301,10 +297,9 @@ class FederationRemoteSendQueue(object): ))) # Fetch changed device messages - keys = self.device_messages.keys() - i = keys.bisect_right(from_token) - j = keys.bisect_right(to_token) + 1 - device_messages = {self.device_messages[k]: k for k in keys[i:j]} + i = self.device_messages.bisect_right(from_token) + j = self.device_messages.bisect_right(to_token) + 1 + device_messages = {v: k for k, v in self.device_messages.items()[i:j]} for (destination, pos) in iteritems(device_messages): rows.append((pos, DeviceRow( diff --git a/synapse/http/__init__.py b/synapse/http/__init__.py index 054372e179..58ef8d3ce4 100644 --- a/synapse/http/__init__.py +++ b/synapse/http/__init__.py @@ -13,6 +13,8 @@ # 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 re + from twisted.internet.defer import CancelledError from twisted.python import failure @@ -34,3 +36,14 @@ def cancelled_to_request_timed_out_error(value, timeout): value.trap(CancelledError) raise RequestTimedOutError() return value + + +ACCESS_TOKEN_RE = re.compile(br'(\?.*access(_|%5[Ff])token=)[^&]*(.*)$') + + +def redact_uri(uri): + """Strips access tokens from the uri replaces with <redacted>""" + return ACCESS_TOKEN_RE.sub( + br'\1<redacted>\3', + uri + ) diff --git a/synapse/http/client.py b/synapse/http/client.py index 4d4eee3d64..8064a84c5c 100644 --- a/synapse/http/client.py +++ b/synapse/http/client.py @@ -19,7 +19,7 @@ from OpenSSL.SSL import VERIFY_NONE from synapse.api.errors import ( CodeMessageException, MatrixCodeMessageException, SynapseError, Codes, ) -from synapse.http import cancelled_to_request_timed_out_error +from synapse.http import cancelled_to_request_timed_out_error, redact_uri from synapse.util.async import add_timeout_to_deferred from synapse.util.caches import CACHE_SIZE_FACTOR from synapse.util.logcontext import make_deferred_yieldable @@ -90,7 +90,8 @@ class SimpleHttpClient(object): # counters to it outgoing_requests_counter.labels(method).inc() - logger.info("Sending request %s %s", method, uri) + # log request but strip `access_token` (AS requests for example include this) + logger.info("Sending request %s %s", method, redact_uri(uri)) try: request_deferred = self.agent.request( @@ -105,14 +106,14 @@ class SimpleHttpClient(object): incoming_responses_counter.labels(method, response.code).inc() logger.info( "Received response to %s %s: %s", - method, uri, response.code + method, redact_uri(uri), response.code ) defer.returnValue(response) except Exception as e: incoming_responses_counter.labels(method, "ERR").inc() logger.info( "Error sending request to %s %s: %s %s", - method, uri, type(e).__name__, e.message + method, redact_uri(uri), type(e).__name__, e.message ) raise e diff --git a/synapse/http/site.py b/synapse/http/site.py index 60299657b9..2664006f8c 100644 --- a/synapse/http/site.py +++ b/synapse/http/site.py @@ -14,18 +14,16 @@ import contextlib import logging -import re import time from twisted.web.server import Site, Request +from synapse.http import redact_uri from synapse.http.request_metrics import RequestMetrics from synapse.util.logcontext import LoggingContext logger = logging.getLogger(__name__) -ACCESS_TOKEN_RE = re.compile(br'(\?.*access(_|%5[Ff])token=)[^&]*(.*)$') - _next_request_seq = 0 @@ -69,10 +67,7 @@ class SynapseRequest(Request): return "%s-%i" % (self.method, self.request_seq) def get_redacted_uri(self): - return ACCESS_TOKEN_RE.sub( - br'\1<redacted>\3', - self.uri - ) + return redact_uri(self.uri) def get_user_agent(self): return self.requestHeaders.getRawHeaders(b"User-Agent", [None])[-1] diff --git a/synapse/python_dependencies.py b/synapse/python_dependencies.py index 478c497722..faf6dfdb8d 100644 --- a/synapse/python_dependencies.py +++ b/synapse/python_dependencies.py @@ -50,14 +50,16 @@ REQUIREMENTS = { "bcrypt": ["bcrypt>=3.1.0"], "pillow": ["PIL"], "pydenticon": ["pydenticon"], - "blist": ["blist"], + "sortedcontainers": ["sortedcontainers"], "pysaml2>=3.0.0": ["saml2>=3.0.0"], "pymacaroons-pynacl": ["pymacaroons"], "msgpack-python>=0.3.0": ["msgpack"], "phonenumbers>=8.2.0": ["phonenumbers"], "six": ["six"], "prometheus_client": ["prometheus_client"], + "attr": ["attr"], } + CONDITIONAL_REQUIREMENTS = { "web_client": { "matrix_angular_sdk>=0.6.8": ["syweb>=0.6.8"], diff --git a/synapse/rest/client/v1/admin.py b/synapse/rest/client/v1/admin.py index 6835a7bba2..b8665a45eb 100644 --- a/synapse/rest/client/v1/admin.py +++ b/synapse/rest/client/v1/admin.py @@ -169,16 +169,12 @@ class PurgeHistoryRestServlet(ClientV1RestServlet): yield self.store.find_first_stream_ordering_after_ts(ts) ) - room_event_after_stream_ordering = ( + r = ( yield self.store.get_room_event_after_stream_ordering( room_id, stream_ordering, ) ) - if room_event_after_stream_ordering: - token = yield self.store.get_topological_token_for_event( - room_event_after_stream_ordering, - ) - else: + if not r: logger.warn( "[purge] purging events not possible: No event found " "(received_ts %i => stream_ordering %i)", @@ -189,8 +185,10 @@ class PurgeHistoryRestServlet(ClientV1RestServlet): "there is no event to be purged", errcode=Codes.NOT_FOUND, ) + (stream, topo, _event_id) = r + token = "t%d-%d" % (topo, stream) logger.info( - "[purge] purging up to token %d (received_ts %i => " + "[purge] purging up to token %s (received_ts %i => " "stream_ordering %i)", token, ts, stream_ordering, ) diff --git a/synapse/storage/roommember.py b/synapse/storage/roommember.py index 7bfc3d91b5..48a88f755e 100644 --- a/synapse/storage/roommember.py +++ b/synapse/storage/roommember.py @@ -578,7 +578,6 @@ class RoomMemberStore(RoomMemberWorkerStore): ) txn.execute(sql, (user_id, room_id)) - txn.call_after(self.was_forgotten_at.invalidate_all) txn.call_after(self.did_forget.invalidate, (user_id, room_id)) self._invalidate_cache_and_stream( txn, self.who_forgot_in_room, (room_id,) @@ -609,31 +608,6 @@ class RoomMemberStore(RoomMemberWorkerStore): count = yield self.runInteraction("did_forget_membership", f) defer.returnValue(count == 0) - @cachedInlineCallbacks(num_args=3) - def was_forgotten_at(self, user_id, room_id, event_id): - """Returns whether user_id has elected to discard history for room_id at - event_id. - - event_id must be a membership event.""" - def f(txn): - sql = ( - "SELECT" - " forgotten" - " FROM" - " room_memberships" - " WHERE" - " user_id = ?" - " AND" - " room_id = ?" - " AND" - " event_id = ?" - ) - txn.execute(sql, (user_id, room_id, event_id)) - rows = txn.fetchall() - return rows[0][0] - forgot = yield self.runInteraction("did_forget_membership_at", f) - defer.returnValue(forgot == 1) - @defer.inlineCallbacks def _background_add_membership_profile(self, progress, batch_size): target_min_stream_id = progress.get( diff --git a/synapse/storage/state.py b/synapse/storage/state.py index bdee14a8eb..85b8ec2b8f 100644 --- a/synapse/storage/state.py +++ b/synapse/storage/state.py @@ -23,7 +23,7 @@ from twisted.internet import defer from synapse.storage.background_updates import BackgroundUpdateStore from synapse.storage.engines import PostgresEngine -from synapse.util.caches import intern_string, CACHE_SIZE_FACTOR +from synapse.util.caches import intern_string, get_cache_factor_for from synapse.util.caches.descriptors import cached, cachedList from synapse.util.caches.dictionary_cache import DictionaryCache from synapse.util.stringutils import to_ascii @@ -57,7 +57,7 @@ class StateGroupWorkerStore(SQLBaseStore): super(StateGroupWorkerStore, self).__init__(db_conn, hs) self._state_group_cache = DictionaryCache( - "*stateGroupCache*", 100000 * CACHE_SIZE_FACTOR + "*stateGroupCache*", 500000 * get_cache_factor_for("stateGroupCache") ) @cached(max_entries=100000, iterable=True) @@ -272,7 +272,7 @@ class StateGroupWorkerStore(SQLBaseStore): for typ in types: if typ[1] is None: where_clauses.append("(type = ?)") - where_args.extend(typ[0]) + where_args.append(typ[0]) wildcard_types = True else: where_clauses.append("(type = ? AND state_key = ?)") diff --git a/synapse/util/caches/__init__.py b/synapse/util/caches/__init__.py index 183faf75a1..900575eb3c 100644 --- a/synapse/util/caches/__init__.py +++ b/synapse/util/caches/__init__.py @@ -22,6 +22,16 @@ import six CACHE_SIZE_FACTOR = float(os.environ.get("SYNAPSE_CACHE_FACTOR", 0.5)) + +def get_cache_factor_for(cache_name): + env_var = "SYNAPSE_CACHE_FACTOR_" + cache_name.upper() + factor = os.environ.get(env_var) + if factor: + return float(factor) + + return CACHE_SIZE_FACTOR + + caches_by_name = {} collectors_by_name = {} diff --git a/synapse/util/caches/descriptors.py b/synapse/util/caches/descriptors.py index fc1874b65b..65a1042de1 100644 --- a/synapse/util/caches/descriptors.py +++ b/synapse/util/caches/descriptors.py @@ -17,7 +17,7 @@ import logging from synapse.util.async import ObservableDeferred from synapse.util import unwrapFirstError, logcontext -from synapse.util.caches import CACHE_SIZE_FACTOR +from synapse.util.caches import get_cache_factor_for from synapse.util.caches.lrucache import LruCache from synapse.util.caches.treecache import TreeCache, iterate_tree_cache_entry from synapse.util.stringutils import to_ascii @@ -313,7 +313,7 @@ class CacheDescriptor(_CacheDescriptorBase): orig, num_args=num_args, inlineCallbacks=inlineCallbacks, cache_context=cache_context) - max_entries = int(max_entries * CACHE_SIZE_FACTOR) + max_entries = int(max_entries * get_cache_factor_for(orig.__name__)) self.max_entries = max_entries self.tree = tree diff --git a/synapse/util/caches/stream_change_cache.py b/synapse/util/caches/stream_change_cache.py index a7fe0397fa..817118e30f 100644 --- a/synapse/util/caches/stream_change_cache.py +++ b/synapse/util/caches/stream_change_cache.py @@ -13,10 +13,10 @@ # See the License for the specific language governing permissions and # limitations under the License. -from synapse.util.caches import register_cache, CACHE_SIZE_FACTOR +from synapse.util import caches -from blist import sorteddict +from sortedcontainers import SortedDict import logging @@ -32,16 +32,18 @@ class StreamChangeCache(object): entities that may have changed since that position. If position key is too old then the cache will simply return all given entities. """ - def __init__(self, name, current_stream_pos, max_size=10000, prefilled_cache={}): - self._max_size = int(max_size * CACHE_SIZE_FACTOR) + + def __init__(self, name, current_stream_pos, max_size=10000, prefilled_cache=None): + self._max_size = int(max_size * caches.CACHE_SIZE_FACTOR) self._entity_to_key = {} - self._cache = sorteddict() + self._cache = SortedDict() self._earliest_known_stream_pos = current_stream_pos self.name = name - self.metrics = register_cache("cache", self.name, self._cache) + self.metrics = caches.register_cache("cache", self.name, self._cache) - for entity, stream_pos in prefilled_cache.items(): - self.entity_has_changed(entity, stream_pos) + if prefilled_cache: + for entity, stream_pos in prefilled_cache.items(): + self.entity_has_changed(entity, stream_pos) def has_entity_changed(self, entity, stream_pos): """Returns True if the entity may have been updated since stream_pos @@ -65,22 +67,25 @@ class StreamChangeCache(object): return False def get_entities_changed(self, entities, stream_pos): - """Returns subset of entities that have had new things since the - given position. If the position is too old it will just return the given list. + """ + Returns subset of entities that have had new things since the given + position. Entities unknown to the cache will be returned. If the + position is too old it will just return the given list. """ assert type(stream_pos) is int if stream_pos >= self._earliest_known_stream_pos: - keys = self._cache.keys() - i = keys.bisect_right(stream_pos) + not_known_entities = set(entities) - set(self._entity_to_key) - result = set( - self._cache[k] for k in keys[i:] - ).intersection(entities) + result = ( + set(self._cache.values()[self._cache.bisect_right(stream_pos) :]) + .intersection(entities) + .union(not_known_entities) + ) self.metrics.inc_hits() else: - result = entities + result = set(entities) self.metrics.inc_misses() return result @@ -90,12 +95,13 @@ class StreamChangeCache(object): """ assert type(stream_pos) is int + if not self._cache: + # If we have no cache, nothing can have changed. + return False + if stream_pos >= self._earliest_known_stream_pos: self.metrics.inc_hits() - keys = self._cache.keys() - i = keys.bisect_right(stream_pos) - - return i < len(keys) + return self._cache.bisect_right(stream_pos) < len(self._cache) else: self.metrics.inc_misses() return True @@ -107,10 +113,7 @@ class StreamChangeCache(object): assert type(stream_pos) is int if stream_pos >= self._earliest_known_stream_pos: - keys = self._cache.keys() - i = keys.bisect_right(stream_pos) - - return [self._cache[k] for k in keys[i:]] + return self._cache.values()[self._cache.bisect_right(stream_pos) :] else: return None @@ -129,8 +132,10 @@ class StreamChangeCache(object): self._entity_to_key[entity] = stream_pos while len(self._cache) > self._max_size: - k, r = self._cache.popitem() - self._earliest_known_stream_pos = max(k, self._earliest_known_stream_pos) + k, r = self._cache.popitem(0) + self._earliest_known_stream_pos = max( + k, self._earliest_known_stream_pos, + ) self._entity_to_key.pop(r, None) def get_max_pos_of_last_change(self, entity): |