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add a filtered_types param to limit filtering to specific types

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This commit is contained in:
Matthew Hodgson 2018-07-19 18:32:02 +01:00
parent be3adfc331
commit 924eb34d94
2 changed files with 96 additions and 82 deletions
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65
synapse/handlers/sync.py
View File

@ -417,38 +417,44 @@ class SyncHandler(object):
))
@defer.inlineCallbacks
def get_state_after_event(self, event, types=None):
def get_state_after_event(self, event, types=None, filtered_types=None):
"""
Get the room state after the given event
Args:
event(synapse.events.EventBase): event of interest
types(list[(str|None, str|None)]|None): List of (type, state_key) tuples
types(list[(str, str|None)]|None): List of (type, state_key) tuples
which are used to filter the state fetched. If `state_key` is None,
all events are returned of the given type. Presence of type of `None`
indicates that types not in the list should not be filtered out.
all events are returned of the given type.
May be None, which matches any key.
filtered_types(list[str]|None): Only apply filtering via `types` to this
list of event types. Other types of events are returned unfiltered.
If None, `types` filtering is applied to all events.
Returns:
A Deferred map from ((type, state_key)->Event)
"""
state_ids = yield self.store.get_state_ids_for_event(event.event_id, types)
state_ids = yield self.store.get_state_ids_for_event(
event.event_id, types, filtered_types=filtered_types
)
if event.is_state():
state_ids = state_ids.copy()
state_ids[(event.type, event.state_key)] = event.event_id
defer.returnValue(state_ids)
@defer.inlineCallbacks
def get_state_at(self, room_id, stream_position, types=None):
def get_state_at(self, room_id, stream_position, types=None, filtered_types=None):
""" Get the room state at a particular stream position
Args:
room_id(str): room for which to get state
stream_position(StreamToken): point at which to get state
types(list[(str|None, str|None)]|None): List of (type, state_key) tuples
types(list[(str, str|None)]|None): List of (type, state_key) tuples
which are used to filter the state fetched. If `state_key` is None,
all events are returned of the given type. Presence of type of `None`
indicates that types not in the list should not be filtered out.
May be None, which matches any key.
all events are returned of the given type.
filtered_types(list[str]|None): Only apply filtering via `types` to this
list of event types. Other types of events are returned unfiltered.
If None, `types` filtering is applied to all events.
Returns:
A Deferred map from ((type, state_key)->Event)
@ -463,7 +469,9 @@ class SyncHandler(object):
if last_events:
last_event = last_events[-1]
state = yield self.get_state_after_event(last_event, types)
state = yield self.get_state_after_event(
last_event, types, filtered_types=filtered_types
)
else:
# no events in this room - so presumably no state
@ -499,6 +507,7 @@ class SyncHandler(object):
types = None
member_state_ids = {}
lazy_load_members = sync_config.filter_collection.lazy_load_members()
filtered_types = None
if lazy_load_members:
# We only request state for the members needed to display the
@ -516,29 +525,25 @@ class SyncHandler(object):
# to be done based on event_id, and we don't have the member
# event ids until we've pulled them out of the DB.
if not types:
# an optimisation to stop needlessly trying to calculate
# member_state_ids
#
# XXX: i can't remember what this trying to do. why would
# types ever be []? --matthew
lazy_load_members = False
types.append((None, None)) # don't just filter to room members
# only apply the filtering to room members
filtered_types = [EventTypes.Member]
if full_state:
if batch:
current_state_ids = yield self.store.get_state_ids_for_event(
batch.events[-1].event_id, types=types
batch.events[-1].event_id, types=types,
filtered_types=filtered_types
)
state_ids = yield self.store.get_state_ids_for_event(
batch.events[0].event_id, types=types
batch.events[0].event_id, types=types,
filtered_types=filtered_types
)
else:
current_state_ids = yield self.get_state_at(
room_id, stream_position=now_token, types=types
room_id, stream_position=now_token, types=types,
filtered_types=filtered_types
)
state_ids = current_state_ids
@ -563,15 +568,18 @@ class SyncHandler(object):
)
elif batch.limited:
state_at_previous_sync = yield self.get_state_at(
room_id, stream_position=since_token, types=types
room_id, stream_position=since_token, types=types,
filtered_types=filtered_types
)
current_state_ids = yield self.store.get_state_ids_for_event(
batch.events[-1].event_id, types=types
batch.events[-1].event_id, types=types,
filtered_types=filtered_types
)
state_at_timeline_start = yield self.store.get_state_ids_for_event(
batch.events[0].event_id, types=types
batch.events[0].event_id, types=types,
filtered_types=filtered_types
)
if lazy_load_members:
@ -603,11 +611,10 @@ class SyncHandler(object):
# event_ids) at this point. We know we can do it based on mxid as this
# is an non-gappy incremental sync.
# strip off the (None, None) and filter to just room members
types = types[:-1]
if types:
state_ids = yield self.store.get_state_ids_for_event(
batch.events[0].event_id, types=types
batch.events[0].event_id, types=types,
filtered_types=filtered_types
)
state = {}

113
synapse/storage/state.py
View File

@ -185,7 +185,7 @@ class StateGroupWorkerStore(SQLBaseStore):
})
@defer.inlineCallbacks
def _get_state_groups_from_groups(self, groups, types):
def _get_state_groups_from_groups(self, groups, types, filtered_types=None):
"""Returns the state groups for a given set of groups, filtering on
types of state events.
@ -193,9 +193,10 @@ class StateGroupWorkerStore(SQLBaseStore):
groups(list[int]): list of state group IDs to query
types(list[str|None, str|None])|None: List of 2-tuples of the form
(`type`, `state_key`), where a `state_key` of `None` matches all
state_keys for the `type`. Presence of type of `None` indicates
that types not in the list should not be filtered out. If None,
all types are returned.
state_keys for the `type`. If None, all types are returned.
filtered_types(list[str]|None): Only apply filtering via `types` to this
list of event types. Other types of events are returned unfiltered.
If None, `types` filtering is applied to all events.
Returns:
dictionary state_group -> (dict of (type, state_key) -> event id)
@ -206,26 +207,21 @@ class StateGroupWorkerStore(SQLBaseStore):
for chunk in chunks:
res = yield self.runInteraction(
"_get_state_groups_from_groups",
self._get_state_groups_from_groups_txn, chunk, types,
self._get_state_groups_from_groups_txn, chunk, types, filtered_types
)
results.update(res)
defer.returnValue(results)
def _get_state_groups_from_groups_txn(self, txn, groups, types=None):
def _get_state_groups_from_groups_txn(
self, txn, groups, types=None, filtered_types=None
):
results = {group: {} for group in groups}
include_other_types = False
include_other_types = False if filtered_types is None else True
if types is not None:
type_set = set(types)
if (None, None) in type_set:
# special case (None, None) to mean that other types should be
# returned - i.e. we were just filtering down the state keys
# for particular types.
include_other_types = True
type_set.remove((None, None))
types = list(type_set) # deduplicate types list
types = list(set(types)) # deduplicate types list
if isinstance(self.database_engine, PostgresEngine):
# Temporarily disable sequential scans in this transaction. This is
@ -276,7 +272,7 @@ class StateGroupWorkerStore(SQLBaseStore):
if include_other_types:
# XXX: check whether this slows postgres down like a list of
# ORs does too?
unique_types = set([t for (t, _) in types])
unique_types = set(filtered_types)
clause_to_args.append(
(
"AND type <> ? " * len(unique_types),
@ -313,7 +309,7 @@ class StateGroupWorkerStore(SQLBaseStore):
where_args.extend([typ[0], typ[1]])
if include_other_types:
unique_types = set([t for (t, _) in types])
unique_types = set(filtered_types)
where_clauses.append(
"(" + " AND ".join(["type <> ?"] * len(unique_types)) + ")"
)
@ -373,18 +369,20 @@ class StateGroupWorkerStore(SQLBaseStore):
return results
@defer.inlineCallbacks
def get_state_for_events(self, event_ids, types):
def get_state_for_events(self, event_ids, types, filtered_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:
event_ids (list[string])
types (list[(str|None, str|None)]|None): List of (type, state_key) tuples
types (list[(str, str|None)]|None): List of (type, state_key) tuples
which are used to filter the state fetched. If `state_key` is None,
all events are returned of the given type. Presence of type of `None`
indicates that types not in the list should not be filtered out.
all events are returned of the given type.
May be None, which matches any key.
filtered_types(list[str]|None): Only apply filtering via `types` to this
list of event types. Other types of events are returned unfiltered.
If None, `types` filtering is applied to all events.
Returns:
deferred: A list of dicts corresponding to the event_ids given.
@ -395,7 +393,7 @@ class StateGroupWorkerStore(SQLBaseStore):
)
groups = set(itervalues(event_to_groups))
group_to_state = yield self._get_state_for_groups(groups, types)
group_to_state = yield self._get_state_for_groups(groups, types, filtered_types)
state_event_map = yield self.get_events(
[ev_id for sd in itervalues(group_to_state) for ev_id in itervalues(sd)],
@ -414,17 +412,19 @@ class StateGroupWorkerStore(SQLBaseStore):
defer.returnValue({event: event_to_state[event] for event in event_ids})
@defer.inlineCallbacks
def get_state_ids_for_events(self, event_ids, types=None):
def get_state_ids_for_events(self, event_ids, types=None, filtered_types=None):
"""
Get the state dicts corresponding to a list of events
Args:
event_ids(list(str)): events whose state should be returned
types(list[(str|None, str|None)]|None): List of (type, state_key) tuples
types(list[(str, str|None)]|None): List of (type, state_key) tuples
which are used to filter the state fetched. If `state_key` is None,
all events are returned of the given type. Presence of type of `None`
indicates that types not in the list should not be filtered out.
all events are returned of the given type.
May be None, which matches any key.
filtered_types(list[str]|None): Only apply filtering via `types` to this
list of event types. Other types of events are returned unfiltered.
If None, `types` filtering is applied to all events.
Returns:
A deferred dict from event_id -> (type, state_key) -> state_event
@ -434,7 +434,7 @@ class StateGroupWorkerStore(SQLBaseStore):
)
groups = set(itervalues(event_to_groups))
group_to_state = yield self._get_state_for_groups(groups, types)
group_to_state = yield self._get_state_for_groups(groups, types, filtered_types)
event_to_state = {
event_id: group_to_state[group]
@ -444,41 +444,45 @@ class StateGroupWorkerStore(SQLBaseStore):
defer.returnValue({event: event_to_state[event] for event in event_ids})
@defer.inlineCallbacks
def get_state_for_event(self, event_id, types=None):
def get_state_for_event(self, event_id, types=None, filtered_types=None):
"""
Get the state dict corresponding to a particular event
Args:
event_id(str): event whose state should be returned
types(list[(str|None, str|None)]|None): List of (type, state_key) tuples
types(list[(str, str|None)]|None): List of (type, state_key) tuples
which are used to filter the state fetched. If `state_key` is None,
all events are returned of the given type. Presence of type of `None`
indicates that types not in the list should not be filtered out.
all events are returned of the given type.
May be None, which matches any key.
filtered_types(list[str]|None): Only apply filtering via `types` to this
list of event types. Other types of events are returned unfiltered.
If None, `types` filtering is applied to all events.
Returns:
A deferred dict from (type, state_key) -> state_event
"""
state_map = yield self.get_state_for_events([event_id], types)
state_map = yield self.get_state_for_events([event_id], types, filtered_types)
defer.returnValue(state_map[event_id])
@defer.inlineCallbacks
def get_state_ids_for_event(self, event_id, types=None):
def get_state_ids_for_event(self, event_id, types=None, filtered_types=None):
"""
Get the state dict corresponding to a particular event
Args:
event_id(str): event whose state should be returned
types(list[(str|None, str|None)]|None): List of (type, state_key) tuples
types(list[(str, str|None)]|None): List of (type, state_key) tuples
which are used to filter the state fetched. If `state_key` is None,
all events are returned of the given type. Presence of type of `None`
indicates that types not in the list should not be filtered out.
all events are returned of the given type.
May be None, which matches any key.
filtered_types(list[str]|None): Only apply filtering via `types` to this
list of event types. Other types of events are returned unfiltered.
If None, `types` filtering is applied to all events.
Returns:
A deferred dict from (type, state_key) -> state_event
"""
state_map = yield self.get_state_ids_for_events([event_id], types)
state_map = yield self.get_state_ids_for_events([event_id], types, filtered_types)
defer.returnValue(state_map[event_id])
@cached(max_entries=50000)
@ -509,7 +513,7 @@ class StateGroupWorkerStore(SQLBaseStore):
defer.returnValue({row["event_id"]: row["state_group"] for row in rows})
def _get_some_state_from_cache(self, group, types):
def _get_some_state_from_cache(self, group, types, filtered_types=None):
"""Checks if group is in cache. See `_get_state_for_groups`
Returns 3-tuple (`state_dict`, `missing_types`, `got_all`).
@ -520,29 +524,30 @@ class StateGroupWorkerStore(SQLBaseStore):
Args:
group(int): The state group to lookup
types(list[str|None, str|None]): List of 2-tuples of the form
types(list[str, str|None]): List of 2-tuples of the form
(`type`, `state_key`), where a `state_key` of `None` matches all
state_keys for the `type`. Presence of type of `None` indicates
that types not in the list should not be filtered out.
state_keys for the `type`.
filtered_types(list[str]|None): Only apply filtering via `types` to this
list of event types. Other types of events are returned unfiltered.
If None, `types` filtering is applied to all events.
"""
is_all, known_absent, state_dict_ids = self._state_group_cache.get(group)
type_to_key = {}
# tracks which of the requested types are missing from our cache
missing_types = set()
include_other_types = False
include_other_types = True if filtered_types is None else False
for typ, state_key in types:
key = (typ, state_key)
if typ is None:
include_other_types = True
next
if state_key is None:
type_to_key[typ] = None
# XXX: why do we mark the type as missing from our cache just
# because we weren't filtering on a specific value of state_key?
# is it because the cache doesn't handle wildcards?
missing_types.add(key)
else:
if type_to_key.get(typ, object()) is not None:
@ -556,7 +561,7 @@ class StateGroupWorkerStore(SQLBaseStore):
def include(typ, state_key):
valid_state_keys = type_to_key.get(typ, sentinel)
if valid_state_keys is sentinel:
return include_other_types
return include_other_types and typ not in filtered_types
if valid_state_keys is None:
return True
if state_key in valid_state_keys:
@ -585,21 +590,23 @@ class StateGroupWorkerStore(SQLBaseStore):
return state_dict_ids, is_all
@defer.inlineCallbacks
def _get_state_for_groups(self, groups, types=None):
def _get_state_for_groups(self, groups, types=None, filtered_types=None):
"""Gets the state at each of a list of state groups, optionally
filtering by type/state_key
Args:
groups (iterable[int]): list of state groups for which we want
to get the state.
types (None|iterable[(None|str, None|str)]):
types (None|iterable[(None, None|str)]):
indicates the state type/keys required. If None, the whole
state is fetched and returned.
Otherwise, each entry should be a `(type, state_key)` tuple to
include in the response. A `state_key` of None is a wildcard
meaning that we require all state with that type. A `type` of None
indicates that types not in the list should not be filtered out.
meaning that we require all state with that type.
filtered_types(list[str]|None): Only apply filtering via `types` to this
list of event types. Other types of events are returned unfiltered.
If None, `types` filtering is applied to all events.
Returns:
Deferred[dict[int, dict[(type, state_key), EventBase]]]
@ -612,7 +619,7 @@ class StateGroupWorkerStore(SQLBaseStore):
if types is not None:
for group in set(groups):
state_dict_ids, _, got_all = self._get_some_state_from_cache(
group, types,
group, types, filtered_types
)
results[group] = state_dict_ids
@ -645,7 +652,7 @@ class StateGroupWorkerStore(SQLBaseStore):
types_to_fetch = types
group_to_state_dict = yield self._get_state_groups_from_groups(
missing_groups, types_to_fetch,
missing_groups, types_to_fetch, filtered_types
)
for group, group_state_dict in iteritems(group_to_state_dict):