diff options
Diffstat (limited to 'synapse')
| -rw-r--r-- | synapse/crypto/keyring.py | 51 | ||||
| -rw-r--r-- | synapse/replication/slave/storage/keys.py | 18 | ||||
| -rw-r--r-- | synapse/storage/keys.py | 74 |
3 files changed, 72 insertions, 71 deletions
diff --git a/synapse/crypto/keyring.py b/synapse/crypto/keyring.py index 04beededdc..834b107705 100644 --- a/synapse/crypto/keyring.py +++ b/synapse/crypto/keyring.py @@ -275,10 +275,6 @@ class Keyring(object): @defer.inlineCallbacks def do_iterations(): with Measure(self.clock, "get_server_verify_keys"): - # dict[str, dict[str, VerifyKey]]: results so far. - # map server_name -> key_id -> VerifyKey - merged_results = {} - # dict[str, set(str)]: keys to fetch for each server missing_keys = {} for verify_request in verify_requests: @@ -288,29 +284,29 @@ class Keyring(object): for fn in key_fetch_fns: results = yield fn(missing_keys.items()) - merged_results.update(results) # We now need to figure out which verify requests we have keys # for and which we don't missing_keys = {} requests_missing_keys = [] for verify_request in verify_requests: - server_name = verify_request.server_name - result_keys = merged_results[server_name] - if verify_request.deferred.called: # We've already called this deferred, which probably # means that we've already found a key for it. continue + server_name = verify_request.server_name + + # see if any of the keys we got this time are sufficient to + # complete this VerifyKeyRequest. + result_keys = results.get(server_name, {}) for key_id in verify_request.key_ids: - if key_id in result_keys: + key = result_keys.get(key_id) + if key: with PreserveLoggingContext(): - verify_request.deferred.callback(( - server_name, - key_id, - result_keys[key_id], - )) + verify_request.deferred.callback( + (server_name, key_id, key) + ) break else: # The else block is only reached if the loop above @@ -344,27 +340,24 @@ class Keyring(object): @defer.inlineCallbacks def get_keys_from_store(self, server_name_and_key_ids): """ - Args: - server_name_and_key_ids (list[(str, iterable[str])]): + server_name_and_key_ids (iterable(Tuple[str, iterable[str]]): list of (server_name, iterable[key_id]) tuples to fetch keys for Returns: - Deferred: resolves to dict[str, dict[str, VerifyKey]]: map from + Deferred: resolves to dict[str, dict[str, VerifyKey|None]]: map from server_name -> key_id -> VerifyKey """ - res = yield logcontext.make_deferred_yieldable(defer.gatherResults( - [ - run_in_background( - self.store.get_server_verify_keys, - server_name, key_ids, - ).addCallback(lambda ks, server: (server, ks), server_name) - for server_name, key_ids in server_name_and_key_ids - ], - consumeErrors=True, - ).addErrback(unwrapFirstError)) - - defer.returnValue(dict(res)) + keys_to_fetch = ( + (server_name, key_id) + for server_name, key_ids in server_name_and_key_ids + for key_id in key_ids + ) + res = yield self.store.get_server_verify_keys(keys_to_fetch) + keys = {} + for (server_name, key_id), key in res.items(): + keys.setdefault(server_name, {})[key_id] = key + defer.returnValue(keys) @defer.inlineCallbacks def get_keys_from_perspectives(self, server_name_and_key_ids): diff --git a/synapse/replication/slave/storage/keys.py b/synapse/replication/slave/storage/keys.py index de00660c0e..cc6f7f009f 100644 --- a/synapse/replication/slave/storage/keys.py +++ b/synapse/replication/slave/storage/keys.py @@ -13,19 +13,9 @@ # See the License for the specific language governing permissions and # limitations under the License. -from synapse.storage import DataStore -from synapse.storage.keys import KeyStore +from synapse.storage import KeyStore -from ._base import BaseSlavedStore, __func__ +# KeyStore isn't really safe to use from a worker, but for now we do so and hope that +# the races it creates aren't too bad. - -class SlavedKeyStore(BaseSlavedStore): - _get_server_verify_key = KeyStore.__dict__[ - "_get_server_verify_key" - ] - - get_server_verify_keys = __func__(DataStore.get_server_verify_keys) - store_server_verify_key = __func__(DataStore.store_server_verify_key) - - get_server_keys_json = __func__(DataStore.get_server_keys_json) - store_server_keys_json = __func__(DataStore.store_server_keys_json) +SlavedKeyStore = KeyStore diff --git a/synapse/storage/keys.py b/synapse/storage/keys.py index 47a9aa784b..7036541792 100644 --- a/synapse/storage/keys.py +++ b/synapse/storage/keys.py @@ -1,5 +1,6 @@ # -*- coding: utf-8 -*- # Copyright 2014-2016 OpenMarket Ltd +# Copyright 2019 New Vector Ltd. # # Licensed under the Apache License, Version 2.0 (the "License"); # you may not use this file except in compliance with the License. @@ -13,15 +14,15 @@ # See the License for the specific language governing permissions and # limitations under the License. +import itertools import logging import six from signedjson.key import decode_verify_key_bytes -from twisted.internet import defer - -from synapse.util.caches.descriptors import cachedInlineCallbacks +from synapse.util import batch_iter +from synapse.util.caches.descriptors import cached, cachedList from ._base import SQLBaseStore @@ -38,36 +39,50 @@ else: class KeyStore(SQLBaseStore): """Persistence for signature verification keys """ - @cachedInlineCallbacks() - def _get_server_verify_key(self, server_name, key_id): - verify_key_bytes = yield self._simple_select_one_onecol( - table="server_signature_keys", - keyvalues={"server_name": server_name, "key_id": key_id}, - retcol="verify_key", - desc="_get_server_verify_key", - allow_none=True, - ) - if verify_key_bytes: - defer.returnValue(decode_verify_key_bytes(key_id, bytes(verify_key_bytes))) + @cached() + def _get_server_verify_key(self, server_name_and_key_id): + raise NotImplementedError() - @defer.inlineCallbacks - def get_server_verify_keys(self, server_name, key_ids): - """Retrieve the NACL verification key for a given server for the given - key_ids + @cachedList( + cached_method_name="_get_server_verify_key", list_name="server_name_and_key_ids" + ) + def get_server_verify_keys(self, server_name_and_key_ids): + """ Args: - server_name (str): The name of the server. - key_ids (iterable[str]): key_ids to try and look up. + server_name_and_key_ids (iterable[Tuple[str, str]]): + iterable of (server_name, key-id) tuples to fetch keys for + Returns: - Deferred: resolves to dict[str, VerifyKey]: map from - key_id to verification key. + Deferred: resolves to dict[Tuple[str, str], VerifyKey|None]: + map from (server_name, key_id) -> VerifyKey, or None if the key is + unknown """ keys = {} - for key_id in key_ids: - key = yield self._get_server_verify_key(server_name, key_id) - if key: - keys[key_id] = key - defer.returnValue(keys) + + def _get_keys(txn, batch): + """Processes a batch of keys to fetch, and adds the result to `keys`.""" + + # batch_iter always returns tuples so it's safe to do len(batch) + sql = ( + "SELECT server_name, key_id, verify_key FROM server_signature_keys " + "WHERE 1=0" + ) + " OR (server_name=? AND key_id=?)" * len(batch) + + txn.execute(sql, tuple(itertools.chain.from_iterable(batch))) + + for row in txn: + server_name, key_id, key_bytes = row + keys[(server_name, key_id)] = decode_verify_key_bytes( + key_id, bytes(key_bytes) + ) + + def _txn(txn): + for batch in batch_iter(server_name_and_key_ids, 50): + _get_keys(txn, batch) + return keys + + return self.runInteraction("get_server_verify_keys", _txn) def store_server_verify_key( self, server_name, from_server, time_now_ms, verify_key @@ -93,8 +108,11 @@ class KeyStore(SQLBaseStore): "verify_key": db_binary_type(verify_key.encode()), }, ) + # invalidate takes a tuple corresponding to the params of + # _get_server_verify_key. _get_server_verify_key only takes one + # param, which is itself the 2-tuple (server_name, key_id). txn.call_after( - self._get_server_verify_key.invalidate, (server_name, key_id) + self._get_server_verify_key.invalidate, ((server_name, key_id),) ) return self.runInteraction("store_server_verify_key", _txn) |