diff options
Diffstat (limited to 'synapse')
| -rwxr-xr-x | synapse/app/homeserver.py | 3 | ||||
| -rw-r--r-- | synapse/config/_base.py | 9 | ||||
| -rw-r--r-- | synapse/config/server.py | 7 | ||||
| -rw-r--r-- | synapse/handlers/federation.py | 8 | ||||
| -rw-r--r-- | synapse/handlers/message.py | 18 | ||||
| -rw-r--r-- | synapse/handlers/sync.py | 6 | ||||
| -rw-r--r-- | synapse/state.py | 10 | ||||
| -rw-r--r-- | synapse/storage/__init__.py | 5 | ||||
| -rw-r--r-- | synapse/storage/_base.py | 109 | ||||
| -rw-r--r-- | synapse/storage/state.py | 353 | ||||
| -rw-r--r-- | synapse/storage/stream.py | 7 | ||||
| -rw-r--r-- | synapse/util/dictionary_cache.py | 106 |
12 files changed, 544 insertions, 97 deletions
diff --git a/synapse/app/homeserver.py b/synapse/app/homeserver.py index 49e27c9e11..f04493f92a 100755 --- a/synapse/app/homeserver.py +++ b/synapse/app/homeserver.py @@ -657,7 +657,8 @@ def run(hs): if hs.config.daemonize: - print hs.config.pid_file + if hs.config.print_pidfile: + print hs.config.pid_file daemon = Daemonize( app="synapse-homeserver", diff --git a/synapse/config/_base.py b/synapse/config/_base.py index d483c67c6a..c408db2b4a 100644 --- a/synapse/config/_base.py +++ b/synapse/config/_base.py @@ -139,6 +139,11 @@ class Config(object): help="Generate a config file for the server name" ) config_parser.add_argument( + "--generate-keys", + action="store_true", + help="Generate any missing key files then exit" + ) + config_parser.add_argument( "-H", "--server-name", help="The server name to generate a config file for" ) @@ -230,4 +235,8 @@ class Config(object): obj.invoke_all("read_arguments", args) + if config_args.generate_keys: + obj.invoke_all("generate_files", config) + sys.exit(0) + return obj diff --git a/synapse/config/server.py b/synapse/config/server.py index f4d4a87103..f9a3b5f15b 100644 --- a/synapse/config/server.py +++ b/synapse/config/server.py @@ -24,6 +24,7 @@ class ServerConfig(Config): self.web_client = config["web_client"] self.soft_file_limit = config["soft_file_limit"] self.daemonize = config.get("daemonize") + self.print_pidfile = config.get("print_pidfile") self.use_frozen_dicts = config.get("use_frozen_dicts", True) self.listeners = config.get("listeners", []) @@ -208,12 +209,18 @@ class ServerConfig(Config): self.manhole = args.manhole if args.daemonize is not None: self.daemonize = args.daemonize + if args.print_pidfile is not None: + self.print_pidfile = args.print_pidfile def add_arguments(self, parser): server_group = parser.add_argument_group("server") server_group.add_argument("-D", "--daemonize", action='store_true', default=None, help="Daemonize the home server") + server_group.add_argument("--print-pidfile", action='store_true', + default=None, + help="Print the path to the pidfile just" + " before daemonizing") server_group.add_argument("--manhole", metavar="PORT", dest="manhole", type=int, help="Turn on the twisted telnet manhole" diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py index f7155fd8d3..90649af9e1 100644 --- a/synapse/handlers/federation.py +++ b/synapse/handlers/federation.py @@ -230,7 +230,11 @@ class FederationHandler(BaseHandler): @defer.inlineCallbacks def _filter_events_for_server(self, server_name, room_id, events): states = yield self.store.get_state_for_events( - room_id, [e.event_id for e in events], + room_id, frozenset(e.event_id for e in events), + types=( + (EventTypes.RoomHistoryVisibility, ""), + (EventTypes.Member, None), + ) ) events_and_states = zip(events, states) @@ -503,7 +507,7 @@ class FederationHandler(BaseHandler): event_ids = list(extremities.keys()) states = yield defer.gatherResults([ - self.state_handler.resolve_state_groups([e]) + self.state_handler.resolve_state_groups(room_id, [e]) for e in event_ids ]) states = dict(zip(event_ids, [s[1] for s in states])) diff --git a/synapse/handlers/message.py b/synapse/handlers/message.py index 9d6d4f0978..11c736f727 100644 --- a/synapse/handlers/message.py +++ b/synapse/handlers/message.py @@ -138,7 +138,11 @@ class MessageHandler(BaseHandler): @defer.inlineCallbacks def _filter_events_for_client(self, user_id, room_id, events): states = yield self.store.get_state_for_events( - room_id, [e.event_id for e in events], + room_id, frozenset(e.event_id for e in events), + types=( + (EventTypes.RoomHistoryVisibility, ""), + (EventTypes.Member, user_id), + ) ) events_and_states = zip(events, states) @@ -401,10 +405,14 @@ class MessageHandler(BaseHandler): except: logger.exception("Failed to get snapshot") - yield defer.gatherResults( - [handle_room(e) for e in room_list], - consumeErrors=True - ).addErrback(unwrapFirstError) + # Only do N rooms at once + n = 5 + d_list = [handle_room(e) for e in room_list] + for ds in [d_list[i:i + n] for i in range(0, len(d_list), n)]: + yield defer.gatherResults( + ds, + consumeErrors=True + ).addErrback(unwrapFirstError) ret = { "rooms": rooms_ret, diff --git a/synapse/handlers/sync.py b/synapse/handlers/sync.py index 6cff6230c1..8f58774b31 100644 --- a/synapse/handlers/sync.py +++ b/synapse/handlers/sync.py @@ -295,7 +295,11 @@ class SyncHandler(BaseHandler): @defer.inlineCallbacks def _filter_events_for_client(self, user_id, room_id, events): states = yield self.store.get_state_for_events( - room_id, [e.event_id for e in events], + room_id, frozenset(e.event_id for e in events), + types=( + (EventTypes.RoomHistoryVisibility, ""), + (EventTypes.Member, user_id), + ) ) events_and_states = zip(events, states) diff --git a/synapse/state.py b/synapse/state.py index 80da90a72c..b5e5d7bbda 100644 --- a/synapse/state.py +++ b/synapse/state.py @@ -96,7 +96,7 @@ class StateHandler(object): cache.ts = self.clock.time_msec() state = cache.state else: - res = yield self.resolve_state_groups(event_ids) + res = yield self.resolve_state_groups(room_id, event_ids) state = res[1] if event_type: @@ -155,13 +155,13 @@ class StateHandler(object): if event.is_state(): ret = yield self.resolve_state_groups( - [e for e, _ in event.prev_events], + event.room_id, [e for e, _ in event.prev_events], event_type=event.type, state_key=event.state_key, ) else: ret = yield self.resolve_state_groups( - [e for e, _ in event.prev_events], + event.room_id, [e for e, _ in event.prev_events], ) group, curr_state, prev_state = ret @@ -180,7 +180,7 @@ class StateHandler(object): @defer.inlineCallbacks @log_function - def resolve_state_groups(self, event_ids, event_type=None, state_key=""): + def resolve_state_groups(self, room_id, event_ids, event_type=None, state_key=""): """ Given a list of event_ids this method fetches the state at each event, resolves conflicts between them and returns them. @@ -205,7 +205,7 @@ class StateHandler(object): ) state_groups = yield self.store.get_state_groups( - event_ids + room_id, event_ids ) logger.debug( diff --git a/synapse/storage/__init__.py b/synapse/storage/__init__.py index 1a6a8a3762..c6ce65b4cc 100644 --- a/synapse/storage/__init__.py +++ b/synapse/storage/__init__.py @@ -354,6 +354,11 @@ def _upgrade_existing_database(cur, current_version, applied_delta_files, ) logger.debug("Running script %s", relative_path) module.run_upgrade(cur, database_engine) + elif ext == ".pyc": + # Sometimes .pyc files turn up anyway even though we've + # disabled their generation; e.g. from distribution package + # installers. Silently skip it + pass elif ext == ".sql": # A plain old .sql file, just read and execute it logger.debug("Applying schema %s", relative_path) diff --git a/synapse/storage/_base.py b/synapse/storage/_base.py index e76ee2779a..27713e8b74 100644 --- a/synapse/storage/_base.py +++ b/synapse/storage/_base.py @@ -16,9 +16,11 @@ import logging from synapse.api.errors import StoreError from synapse.util.async import ObservableDeferred +from synapse.util import unwrapFirstError from synapse.util.logutils import log_function from synapse.util.logcontext import preserve_context_over_fn, LoggingContext from synapse.util.lrucache import LruCache +from synapse.util.dictionary_cache import DictionaryCache import synapse.metrics from util.id_generators import IdGenerator, StreamIdGenerator @@ -231,6 +233,101 @@ class CacheDescriptor(object): return wrapped +class CacheListDescriptor(object): + def __init__(self, orig, cache, list_name, num_args=1, inlineCallbacks=False): + self.orig = orig + + if inlineCallbacks: + self.function_to_call = defer.inlineCallbacks(orig) + else: + self.function_to_call = orig + + self.num_args = num_args + self.list_name = list_name + + self.arg_names = inspect.getargspec(orig).args[1:num_args+1] + self.list_pos = self.arg_names.index(self.list_name) + + self.cache = cache + + self.sentinel = object() + + if len(self.arg_names) < self.num_args: + raise Exception( + "Not enough explicit positional arguments to key off of for %r." + " (@cached cannot key off of *args or **kwars)" + % (orig.__name__,) + ) + + if self.list_name not in self.arg_names: + raise Exception( + "Couldn't see arguments %r for %r." + % (self.list_name, cache.name,) + ) + + def __get__(self, obj, objtype=None): + + @functools.wraps(self.orig) + def wrapped(*args, **kwargs): + arg_dict = inspect.getcallargs(self.orig, obj, *args, **kwargs) + keyargs = [arg_dict[arg_nm] for arg_nm in self.arg_names] + list_args = arg_dict[self.list_name] + + cached = {} + missing = [] + for arg in list_args: + key = list(keyargs) + key[self.list_pos] = arg + + try: + res = self.cache.get(tuple(key)).observe() + res.addCallback(lambda r, arg: (arg, r), arg) + cached[arg] = res + except KeyError: + missing.append(arg) + + if missing: + sequence = self.cache.sequence + args_to_call = dict(arg_dict) + args_to_call[self.list_name] = missing + + ret_d = defer.maybeDeferred( + self.function_to_call, + **args_to_call + ) + + ret_d = ObservableDeferred(ret_d) + + for arg in missing: + observer = ret_d.observe() + observer.addCallback(lambda r, arg: r[arg], arg) + + observer = ObservableDeferred(observer) + + key = list(keyargs) + key[self.list_pos] = arg + self.cache.update(sequence, tuple(key), observer) + + def invalidate(f, key): + self.cache.invalidate(key) + return f + observer.addErrback(invalidate, tuple(key)) + + res = observer.observe() + res.addCallback(lambda r, arg: (arg, r), arg) + + cached[arg] = res + + return defer.gatherResults( + cached.values(), + consumeErrors=True, + ).addErrback(unwrapFirstError).addCallback(lambda res: dict(res)) + + obj.__dict__[self.orig.__name__] = wrapped + + return wrapped + + def cached(max_entries=1000, num_args=1, lru=True): return lambda orig: CacheDescriptor( orig, @@ -250,6 +347,16 @@ def cachedInlineCallbacks(max_entries=1000, num_args=1, lru=False): ) +def cachedList(cache, list_name, num_args=1, inlineCallbacks=False): + return lambda orig: CacheListDescriptor( + orig, + cache=cache, + list_name=list_name, + num_args=num_args, + inlineCallbacks=inlineCallbacks, + ) + + class LoggingTransaction(object): """An object that almost-transparently proxies for the 'txn' object passed to the constructor. Adds logging and metrics to the .execute() @@ -370,6 +477,8 @@ class SQLBaseStore(object): self._get_event_cache = Cache("*getEvent*", keylen=3, lru=True, max_entries=hs.config.event_cache_size) + self._state_group_cache = DictionaryCache("*stateGroupCache*", 100000) + self._event_fetch_lock = threading.Condition() self._event_fetch_list = [] self._event_fetch_ongoing = 0 diff --git a/synapse/storage/state.py b/synapse/storage/state.py index 7ce51b9bdc..06f0ab3ff6 100644 --- a/synapse/storage/state.py +++ b/synapse/storage/state.py @@ -13,7 +13,7 @@ # See the License for the specific language governing permissions and # limitations under the License. -from ._base import SQLBaseStore, cachedInlineCallbacks +from ._base import SQLBaseStore, cached, cachedInlineCallbacks, cachedList from twisted.internet import defer @@ -44,52 +44,26 @@ class StateStore(SQLBaseStore): """ @defer.inlineCallbacks - def get_state_groups(self, event_ids): + def get_state_groups(self, room_id, event_ids): """ Get the state groups for the given list of event_ids The return value is a dict mapping group names to lists of events. """ + if not event_ids: + defer.returnValue({}) - def f(txn): - groups = set() - for event_id in event_ids: - group = self._simple_select_one_onecol_txn( - txn, - table="event_to_state_groups", - keyvalues={"event_id": event_id}, - retcol="state_group", - allow_none=True, - ) - if group: - groups.add(group) - - res = {} - for group in groups: - state_ids = self._simple_select_onecol_txn( - txn, - table="state_groups_state", - keyvalues={"state_group": group}, - retcol="event_id", - ) - - res[group] = state_ids - - return res - - states = yield self.runInteraction( - "get_state_groups", - f, + event_to_groups = yield self._get_state_group_for_events( + room_id, event_ids, ) - state_list = yield defer.gatherResults( - [ - self._fetch_events_for_group(group, vals) - for group, vals in states.items() - ], - consumeErrors=True, - ) + groups = set(event_to_groups.values()) - defer.returnValue(dict(state_list)) + group_to_state = yield self._get_state_for_groups(groups) + + defer.returnValue({ + group: state_map.values() + for group, state_map in group_to_state.items() + }) def _fetch_events_for_group(self, key, events): return self._get_events( @@ -204,64 +178,285 @@ class StateStore(SQLBaseStore): events = yield self._get_events(event_ids, get_prev_content=False) defer.returnValue(events) + def _get_state_groups_from_group(self, group, types): + def f(txn): + if types is not None: + where_clause = "AND (%s)" % ( + " OR ".join(["(type = ? AND state_key = ?)"] * len(types)), + ) + else: + where_clause = "" + + sql = ( + "SELECT event_id FROM state_groups_state WHERE" + " state_group = ? %s" + ) % (where_clause,) + + args = [group] + if types is not None: + args.extend([i for typ in types for i in typ]) + + txn.execute(sql, args) + + return [r[0] for r in txn.fetchall()] + + return self.runInteraction( + "_get_state_groups_from_group", + f, + ) + + def _get_state_groups_from_groups(self, groups_and_types): + def f(txn): + results = {} + for group, types in groups_and_types: + if types is not None: + where_clause = "AND (%s)" % ( + " OR ".join(["(type = ? AND state_key = ?)"] * len(types)), + ) + else: + where_clause = "" + + sql = ( + "SELECT event_id FROM state_groups_state WHERE" + " state_group = ? %s" + ) % (where_clause,) + + args = [group] + if types is not None: + args.extend([i for typ in types for i in typ]) + + txn.execute(sql, args) + + results[group] = [ + r[0] + for r in txn.fetchall() + ] + + return results + + return self.runInteraction( + "_get_state_groups_from_groups", + f, + ) + + @cached(num_args=3, lru=True, max_entries=10000) + def _get_state_for_event_id(self, room_id, event_id, types): + def f(txn): + type_and_state_sql = " OR ".join([ + "(type = ? AND state_key = ?)" + if typ[1] is not None + else "type = ?" + for typ in types + ]) + + sql = ( + "SELECT e.event_id, sg.state_group, sg.event_id" + " FROM state_groups_state as sg" + " INNER JOIN event_to_state_groups as e" + " ON e.state_group = sg.state_group" + " WHERE e.event_id = ? AND (%s)" + ) % (type_and_state_sql,) + + args = [event_id] + for typ, state_key in types: + args.extend( + [typ, state_key] if state_key is not None else [typ] + ) + txn.execute(sql, args) + + return event_id, [ + r[0] + for r in txn.fetchall() + ] + + return self.runInteraction( + "_get_state_for_event_id", + f, + ) + @defer.inlineCallbacks - def get_state_for_events(self, room_id, event_ids): + def get_state_for_events(self, room_id, event_ids, types): + """Given a list of event_ids and type tuples, return a list of state + dicts for each event. The state dicts will only have the type/state_keys + that are in the `types` list. + + Args: + room_id (str) + event_ids (list) + types (list): List of (type, state_key) tuples which are used to + filter the state fetched. `state_key` may be None, which matches + any `state_key` + + Returns: + deferred: A list of dicts corresponding to the event_ids given. + The dicts are mappings from (type, state_key) -> state_events + """ + event_to_groups = yield self._get_state_group_for_events( + room_id, event_ids, + ) + + groups = set(event_to_groups.values()) + + group_to_state = yield self._get_state_for_groups( + groups, types + ) + + event_to_state = { + event_id: group_to_state[group] + for event_id, group in event_to_groups.items() + } + + defer.returnValue([ + event_to_state[event] + for event in event_ids + ]) + + @cached(num_args=2, lru=True, max_entries=100000) + def _get_state_group_for_event(self, room_id, event_id): + return self._simple_select_one_onecol( + table="event_to_state_groups", + keyvalues={ + "event_id": event_id, + }, + retcol="state_group", + allow_none=True, + desc="_get_state_group_for_event", + ) + + @cachedList(cache=_get_state_group_for_event.cache, list_name="event_ids", + num_args=2) + def _get_state_group_for_events(self, room_id, event_ids): def f(txn): - groups = set() - event_to_group = {} + results = {} for event_id in event_ids: - # TODO: Remove this loop. - group = self._simple_select_one_onecol_txn( + results[event_id] = self._simple_select_one_onecol_txn( txn, table="event_to_state_groups", - keyvalues={"event_id": event_id}, + keyvalues={ + "event_id": event_id, + }, retcol="state_group", allow_none=True, ) - if group: - event_to_group[event_id] = group - groups.add(group) - - group_to_state_ids = {} - for group in groups: - state_ids = self._simple_select_onecol_txn( - txn, - table="state_groups_state", - keyvalues={"state_group": group}, - retcol="event_id", - ) - - group_to_state_ids[group] = state_ids - return event_to_group, group_to_state_ids + return results - res = yield self.runInteraction( - "annotate_events_with_state_groups", + return self.runInteraction( + "_get_state_group_for_events", f, ) - event_to_group, group_to_state_ids = res + def _get_state_for_group_from_cache(self, group, types=None): + is_all, state_dict = self._state_group_cache.get(group) + + type_to_key = {} + missing_types = set() + if types is not None: + for typ, state_key in types: + if state_key is None: + type_to_key[typ] = None + missing_types.add((typ, state_key)) + else: + if type_to_key.get(typ, object()) is not None: + type_to_key.setdefault(typ, set()).add(state_key) + + if (typ, state_key) not in state_dict: + missing_types.add((typ, state_key)) + + if is_all and types is None: + return state_dict, missing_types + + if is_all or (types is not None and not missing_types): + sentinel = object() + + def include(typ, state_key): + valid_state_keys = type_to_key.get(typ, sentinel) + if valid_state_keys is sentinel: + return False + if valid_state_keys is None: + return True + if state_key in valid_state_keys: + return True + return False + + return { + k: v + for k, v in state_dict.items() + if v and include(k[0], k[1]) + }, missing_types + + return {}, missing_types - state_list = yield defer.gatherResults( - [ - self._fetch_events_for_group(group, vals) - for group, vals in group_to_state_ids.items() - ], - consumeErrors=True, + @defer.inlineCallbacks + def _get_state_for_groups(self, groups, types=None): + results = {} + missing_groups_and_types = [] + for group in groups: + state_dict, missing_types = self._get_state_for_group_from_cache( + group, types + ) + + if types is not None and not missing_types: + results[group] = { + key: value + for key, value in state_dict.items() + if value + } + else: + missing_groups_and_types.append(( + group, + missing_types if types else None + )) + + if not missing_groups_and_types: + defer.returnValue(results) + + # Okay, so we have some missing_types, lets fetch them. + cache_seq_num = self._state_group_cache.sequence + + group_state_dict = yield self._get_state_groups_from_groups( + missing_groups_and_types ) - state_dict = { - group: { - (ev.type, ev.state_key): ev - for ev in state - } - for group, state in state_list + state_events = yield self._get_events( + [e_id for l in group_state_dict.values() for e_id in l], + get_prev_content=False + ) + + state_events = { + e.event_id: e + for e in state_events } - defer.returnValue([ - state_dict.get(event_to_group.get(event, None), None) - for event in event_ids - ]) + for group, state_ids in group_state_dict.items(): + state_dict = { + key: None + for key in missing_types + } + evs = [ + state_events[e_id] for e_id in state_ids + if e_id in state_events # This can happen if event is rejected. + ] + state_dict.update({ + (e.type, e.state_key): e + for e in evs + }) + + # Update the cache + self._state_group_cache.update( + cache_seq_num, + key=group, + value=state_dict, + full=(types is None), + ) + + results[group] = { + key: value + for key, value in state_dict.items() + if value + } + + defer.returnValue(results) def _make_group_id(clock): diff --git a/synapse/storage/stream.py b/synapse/storage/stream.py index af45fc5619..b59fe81004 100644 --- a/synapse/storage/stream.py +++ b/synapse/storage/stream.py @@ -35,7 +35,7 @@ what sort order was used: from twisted.internet import defer -from ._base import SQLBaseStore +from ._base import SQLBaseStore, cachedInlineCallbacks from synapse.api.constants import EventTypes from synapse.types import RoomStreamToken from synapse.util.logutils import log_function @@ -299,9 +299,8 @@ class StreamStore(SQLBaseStore): defer.returnValue((events, token)) - @defer.inlineCallbacks - def get_recent_events_for_room(self, room_id, limit, end_token, - with_feedback=False, from_token=None): + @cachedInlineCallbacks(num_args=4) + def get_recent_events_for_room(self, room_id, limit, end_token, from_token=None): # TODO (erikj): Handle compressed feedback end_token = RoomStreamToken.parse_stream_token(end_token) diff --git a/synapse/util/dictionary_cache.py b/synapse/util/dictionary_cache.py new file mode 100644 index 0000000000..38b131677c --- /dev/null +++ b/synapse/util/dictionary_cache.py @@ -0,0 +1,106 @@ +# -*- coding: utf-8 -*- +# Copyright 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 synapse.util.lrucache import LruCache +from collections import namedtuple +import threading +import logging + + +logger = logging.getLogger(__name__) + + +DictionaryEntry = namedtuple("DictionaryEntry", ("full", "value")) + + +class DictionaryCache(object): + + def __init__(self, name, max_entries=1000): + self.cache = LruCache(max_size=max_entries) + + self.name = name + self.sequence = 0 + self.thread = None + # caches_by_name[name] = self.cache + + class Sentinel(object): + __slots__ = [] + + self.sentinel = Sentinel() + + def check_thread(self): + expected_thread = self.thread + if expected_thread is None: + self.thread = threading.current_thread() + else: + if expected_thread is not threading.current_thread(): + raise ValueError( + "Cache objects can only be accessed from the main thread" + ) + + def get(self, key, dict_keys=None): + try: + entry = self.cache.get(key, self.sentinel) + if entry is not self.sentinel: + # cache_counter.inc_hits(self.name) + + if dict_keys is None: + return DictionaryEntry(entry.full, dict(entry.value)) + else: + return DictionaryEntry(entry.full, { + k: entry.value[k] + for k in dict_keys + if k in entry.value + }) + + # cache_counter.inc_misses(self.name) + return DictionaryEntry(False, {}) + except: + logger.exception("get failed") + raise + + def invalidate(self, key): + self.check_thread() + + # Increment the sequence number so that any SELECT statements that + # raced with the INSERT don't update the cache (SYN-369) + self.sequence += 1 + self.cache.pop(key, None) + + def invalidate_all(self): + self.check_thread() + self.sequence += 1 + self.cache.clear() + + def update(self, sequence, key, value, full=False): + try: + self.check_thread() + if self.sequence == sequence: + # Only update the cache if the caches sequence number matches the + # number that the cache had before the SELECT was started (SYN-369) + if full: + self._insert(key, value) + else: + self._update_or_insert(key, value) + except: + logger.exception("update failed") + raise + + def _update_or_insert(self, key, value): + entry = self.cache.setdefault(key, DictionaryEntry(False, {})) + entry.value.update(value) + + def _insert(self, key, value): + self.cache[key] = DictionaryEntry(True, value) |