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Move get_bundled_aggregations to relations handler. (#12237) 

The get_bundled_aggregations code is fairly high-level and uses
a lot of store methods, we move it into the handler as that seems
like a better fit.
This commit is contained in:
Patrick Cloke 2022-03-18 13:49:32 -04:00 committed by GitHub
parent 80e0e1f35e
commit 8fe930c215
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9 changed files with 173 additions and 157 deletions
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1
changelog.d/12237.misc Normal file
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@ -0,0 +1 @@
Refactor the relations endpoints to add a `RelationsHandler`.

2
synapse/events/utils.py
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@ -38,8 +38,8 @@ from synapse.util.frozenutils import unfreeze
from . import EventBase
if TYPE_CHECKING:
from synapse.handlers.relations import BundledAggregations
from synapse.server import HomeServer
from synapse.storage.databases.main.relations import BundledAggregations
# Split strings on "." but not "\." This uses a negative lookbehind assertion for '\'

5
synapse/handlers/pagination.py
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@ -134,6 +134,7 @@ class PaginationHandler:
self.clock = hs.get_clock()
self._server_name = hs.hostname
self._room_shutdown_handler = hs.get_room_shutdown_handler()
self._relations_handler = hs.get_relations_handler()
self.pagination_lock = ReadWriteLock()
# IDs of rooms in which there currently an active purge *or delete* operation.
@ -539,7 +540,9 @@ class PaginationHandler:
state_dict = await self.store.get_events(list(state_ids.values()))
state = state_dict.values()
aggregations = await self.store.get_bundled_aggregations(events, user_id)
aggregations = await self._relations_handler.get_bundled_aggregations(
events, user_id
)
time_now = self.clock.time_msec()

151
synapse/handlers/relations.py
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@ -12,18 +12,53 @@
# See the License for the specific language governing permissions and
# limitations under the License.
import logging
from typing import TYPE_CHECKING, Optional
from typing import TYPE_CHECKING, Dict, Iterable, Optional, cast
import attr
from frozendict import frozendict
from synapse.api.constants import RelationTypes
from synapse.api.errors import SynapseError
from synapse.events import EventBase
from synapse.types import JsonDict, Requester, StreamToken
if TYPE_CHECKING:
from synapse.server import HomeServer
from synapse.storage.databases.main import DataStore
logger = logging.getLogger(__name__)
@attr.s(slots=True, frozen=True, auto_attribs=True)
class _ThreadAggregation:
# The latest event in the thread.
latest_event: EventBase
# The latest edit to the latest event in the thread.
latest_edit: Optional[EventBase]
# The total number of events in the thread.
count: int
# True if the current user has sent an event to the thread.
current_user_participated: bool
@attr.s(slots=True, auto_attribs=True)
class BundledAggregations:
"""
The bundled aggregations for an event.
Some values require additional processing during serialization.
"""
annotations: Optional[JsonDict] = None
references: Optional[JsonDict] = None
replace: Optional[EventBase] = None
thread: Optional[_ThreadAggregation] = None
def __bool__(self) -> bool:
return bool(self.annotations or self.references or self.replace or self.thread)
class RelationsHandler:
def __init__(self, hs: "HomeServer"):
self._main_store = hs.get_datastores().main
@ -103,7 +138,7 @@ class RelationsHandler:
)
# The relations returned for the requested event do include their
# bundled aggregations.
aggregations = await self._main_store.get_bundled_aggregations(
aggregations = await self.get_bundled_aggregations(
events, requester.user.to_string()
)
serialized_events = self._event_serializer.serialize_events(
@ -115,3 +150,115 @@ class RelationsHandler:
return_value["original_event"] = original_event
return return_value
async def _get_bundled_aggregation_for_event(
self, event: EventBase, user_id: str
) -> Optional[BundledAggregations]:
"""Generate bundled aggregations for an event.
Note that this does not use a cache, but depends on cached methods.
Args:
event: The event to calculate bundled aggregations for.
user_id: The user requesting the bundled aggregations.
Returns:
The bundled aggregations for an event, if bundled aggregations are
enabled and the event can have bundled aggregations.
"""
# Do not bundle aggregations for an event which represents an edit or an
# annotation. It does not make sense for them to have related events.
relates_to = event.content.get("m.relates_to")
if isinstance(relates_to, (dict, frozendict)):
relation_type = relates_to.get("rel_type")
if relation_type in (RelationTypes.ANNOTATION, RelationTypes.REPLACE):
return None
event_id = event.event_id
room_id = event.room_id
# The bundled aggregations to include, a mapping of relation type to a
# type-specific value. Some types include the direct return type here
# while others need more processing during serialization.
aggregations = BundledAggregations()
annotations = await self._main_store.get_aggregation_groups_for_event(
event_id, room_id
)
if annotations.chunk:
aggregations.annotations = await annotations.to_dict(
cast("DataStore", self)
)
references = await self._main_store.get_relations_for_event(
event_id, event, room_id, RelationTypes.REFERENCE, direction="f"
)
if references.chunk:
aggregations.references = await references.to_dict(cast("DataStore", self))
# Store the bundled aggregations in the event metadata for later use.
return aggregations
async def get_bundled_aggregations(
self, events: Iterable[EventBase], user_id: str
) -> Dict[str, BundledAggregations]:
"""Generate bundled aggregations for events.
Args:
events: The iterable of events to calculate bundled aggregations for.
user_id: The user requesting the bundled aggregations.
Returns:
A map of event ID to the bundled aggregation for the event. Not all
events may have bundled aggregations in the results.
"""
# De-duplicate events by ID to handle the same event requested multiple times.
#
# State events do not get bundled aggregations.
events_by_id = {
event.event_id: event for event in events if not event.is_state()
}
# event ID -> bundled aggregation in non-serialized form.
results: Dict[str, BundledAggregations] = {}
# Fetch other relations per event.
for event in events_by_id.values():
event_result = await self._get_bundled_aggregation_for_event(event, user_id)
if event_result:
results[event.event_id] = event_result
# Fetch any edits (but not for redacted events).
edits = await self._main_store.get_applicable_edits(
[
event_id
for event_id, event in events_by_id.items()
if not event.internal_metadata.is_redacted()
]
)
for event_id, edit in edits.items():
results.setdefault(event_id, BundledAggregations()).replace = edit
# Fetch thread summaries.
summaries = await self._main_store.get_thread_summaries(events_by_id.keys())
# Only fetch participated for a limited selection based on what had
# summaries.
participated = await self._main_store.get_threads_participated(
[event_id for event_id, summary in summaries.items() if summary], user_id
)
for event_id, summary in summaries.items():
if summary:
thread_count, latest_thread_event, edit = summary
results.setdefault(
event_id, BundledAggregations()
).thread = _ThreadAggregation(
latest_event=latest_thread_event,
latest_edit=edit,
count=thread_count,
# If there's a thread summary it must also exist in the
# participated dictionary.
current_user_participated=participated[event_id],
)
return results

5
synapse/handlers/room.py
View File

@ -60,8 +60,8 @@ from synapse.events import EventBase
from synapse.events.utils import copy_power_levels_contents
from synapse.federation.federation_client import InvalidResponseError
from synapse.handlers.federation import get_domains_from_state
from synapse.handlers.relations import BundledAggregations
from synapse.rest.admin._base import assert_user_is_admin
from synapse.storage.databases.main.relations import BundledAggregations
from synapse.storage.state import StateFilter
from synapse.streams import EventSource
from synapse.types import (
@ -1118,6 +1118,7 @@ class RoomContextHandler:
self.store = hs.get_datastores().main
self.storage = hs.get_storage()
self.state_store = self.storage.state
self._relations_handler = hs.get_relations_handler()
async def get_event_context(
self,
@ -1190,7 +1191,7 @@ class RoomContextHandler:
event = filtered[0]
# Fetch the aggregations.
aggregations = await self.store.get_bundled_aggregations(
aggregations = await self._relations_handler.get_bundled_aggregations(
itertools.chain(events_before, (event,), events_after),
user.to_string(),
)

3
synapse/handlers/search.py
View File

@ -54,6 +54,7 @@ class SearchHandler:
self.clock = hs.get_clock()
self.hs = hs
self._event_serializer = hs.get_event_client_serializer()
self._relations_handler = hs.get_relations_handler()
self.storage = hs.get_storage()
self.state_store = self.storage.state
self.auth = hs.get_auth()
@ -354,7 +355,7 @@ class SearchHandler:
aggregations = None
if self._msc3666_enabled:
aggregations = await self.store.get_bundled_aggregations(
aggregations = await self._relations_handler.get_bundled_aggregations(
# Generate an iterable of EventBase for all the events that will be
# returned, including contextual events.
itertools.chain(

9
synapse/handlers/sync.py
View File

@ -33,11 +33,11 @@ from synapse.api.filtering import FilterCollection
from synapse.api.presence import UserPresenceState
from synapse.api.room_versions import KNOWN_ROOM_VERSIONS
from synapse.events import EventBase
from synapse.handlers.relations import BundledAggregations
from synapse.logging.context import current_context
from synapse.logging.opentracing import SynapseTags, log_kv, set_tag, start_active_span
from synapse.push.clientformat import format_push_rules_for_user
from synapse.storage.databases.main.event_push_actions import NotifCounts
from synapse.storage.databases.main.relations import BundledAggregations
from synapse.storage.roommember import MemberSummary
from synapse.storage.state import StateFilter
from synapse.types import (
@ -269,6 +269,7 @@ class SyncHandler:
self.store = hs.get_datastores().main
self.notifier = hs.get_notifier()
self.presence_handler = hs.get_presence_handler()
self._relations_handler = hs.get_relations_handler()
self.event_sources = hs.get_event_sources()
self.clock = hs.get_clock()
self.state = hs.get_state_handler()
@ -638,8 +639,10 @@ class SyncHandler:
# as clients will have all the necessary information.
bundled_aggregations = None
if limited or newly_joined_room:
bundled_aggregations = await self.store.get_bundled_aggregations(
recents, sync_config.user.to_string()
bundled_aggregations = (
await self._relations_handler.get_bundled_aggregations(
recents, sync_config.user.to_string()
)
)
return TimelineBatch(

3
synapse/rest/client/room.py
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@ -645,6 +645,7 @@ class RoomEventServlet(RestServlet):
self._store = hs.get_datastores().main
self.event_handler = hs.get_event_handler()
self._event_serializer = hs.get_event_client_serializer()
self._relations_handler = hs.get_relations_handler()
self.auth = hs.get_auth()
async def on_GET(
@ -663,7 +664,7 @@ class RoomEventServlet(RestServlet):
if event:
# Ensure there are bundled aggregations available.
aggregations = await self._store.get_bundled_aggregations(
aggregations = await self._relations_handler.get_bundled_aggregations(
[event], requester.user.to_string()
)

151
synapse/storage/databases/main/relations.py
View File

@ -27,7 +27,6 @@ from typing import (
)
import attr
from frozendict import frozendict
from synapse.api.constants import RelationTypes
from synapse.events import EventBase
@ -41,45 +40,15 @@ from synapse.storage.database import (
from synapse.storage.databases.main.stream import generate_pagination_where_clause
from synapse.storage.engines import PostgresEngine
from synapse.storage.relations import AggregationPaginationToken, PaginationChunk
from synapse.types import JsonDict, RoomStreamToken, StreamToken
from synapse.types import RoomStreamToken, StreamToken
from synapse.util.caches.descriptors import cached, cachedList
if TYPE_CHECKING:
from synapse.server import HomeServer
from synapse.storage.databases.main import DataStore
logger = logging.getLogger(__name__)
@attr.s(slots=True, frozen=True, auto_attribs=True)
class _ThreadAggregation:
# The latest event in the thread.
latest_event: EventBase
# The latest edit to the latest event in the thread.
latest_edit: Optional[EventBase]
# The total number of events in the thread.
count: int
# True if the current user has sent an event to the thread.
current_user_participated: bool
@attr.s(slots=True, auto_attribs=True)
class BundledAggregations:
"""
The bundled aggregations for an event.
Some values require additional processing during serialization.
"""
annotations: Optional[JsonDict] = None
references: Optional[JsonDict] = None
replace: Optional[EventBase] = None
thread: Optional[_ThreadAggregation] = None
def __bool__(self) -> bool:
return bool(self.annotations or self.references or self.replace or self.thread)
class RelationsWorkerStore(SQLBaseStore):
def __init__(
self,
@ -384,7 +353,7 @@ class RelationsWorkerStore(SQLBaseStore):
raise NotImplementedError()
@cachedList(cached_method_name="get_applicable_edit", list_name="event_ids")
async def _get_applicable_edits(
async def get_applicable_edits(
self, event_ids: Collection[str]
) -> Dict[str, Optional[EventBase]]:
"""Get the most recent edit (if any) that has happened for the given
@ -473,7 +442,7 @@ class RelationsWorkerStore(SQLBaseStore):
raise NotImplementedError()
@cachedList(cached_method_name="get_thread_summary", list_name="event_ids")
async def _get_thread_summaries(
async def get_thread_summaries(
self, event_ids: Collection[str]
) -> Dict[str, Optional[Tuple[int, EventBase, Optional[EventBase]]]]:
"""Get the number of threaded replies, the latest reply (if any), and the latest edit for that reply for the given event.
@ -587,7 +556,7 @@ class RelationsWorkerStore(SQLBaseStore):
latest_events = await self.get_events(latest_event_ids.values()) # type: ignore[attr-defined]
# Check to see if any of those events are edited.
latest_edits = await self._get_applicable_edits(latest_event_ids.values())
latest_edits = await self.get_applicable_edits(latest_event_ids.values())
# Map to the event IDs to the thread summary.
#
@ -610,7 +579,7 @@ class RelationsWorkerStore(SQLBaseStore):
raise NotImplementedError()
@cachedList(cached_method_name="get_thread_participated", list_name="event_ids")
async def _get_threads_participated(
async def get_threads_participated(
self, event_ids: Collection[str], user_id: str
) -> Dict[str, bool]:
"""Get whether the requesting user participated in the given threads.
@ -766,116 +735,6 @@ class RelationsWorkerStore(SQLBaseStore):
"get_if_user_has_annotated_event", _get_if_user_has_annotated_event
)
async def _get_bundled_aggregation_for_event(
self, event: EventBase, user_id: str
) -> Optional[BundledAggregations]:
"""Generate bundled aggregations for an event.
Note that this does not use a cache, but depends on cached methods.
Args:
event: The event to calculate bundled aggregations for.
user_id: The user requesting the bundled aggregations.
Returns:
The bundled aggregations for an event, if bundled aggregations are
enabled and the event can have bundled aggregations.
"""
# Do not bundle aggregations for an event which represents an edit or an
# annotation. It does not make sense for them to have related events.
relates_to = event.content.get("m.relates_to")
if isinstance(relates_to, (dict, frozendict)):
relation_type = relates_to.get("rel_type")
if relation_type in (RelationTypes.ANNOTATION, RelationTypes.REPLACE):
return None
event_id = event.event_id
room_id = event.room_id
# The bundled aggregations to include, a mapping of relation type to a
# type-specific value. Some types include the direct return type here
# while others need more processing during serialization.
aggregations = BundledAggregations()
annotations = await self.get_aggregation_groups_for_event(event_id, room_id)
if annotations.chunk:
aggregations.annotations = await annotations.to_dict(
cast("DataStore", self)
)
references = await self.get_relations_for_event(
event_id, event, room_id, RelationTypes.REFERENCE, direction="f"
)
if references.chunk:
aggregations.references = await references.to_dict(cast("DataStore", self))
# Store the bundled aggregations in the event metadata for later use.
return aggregations
async def get_bundled_aggregations(
self, events: Iterable[EventBase], user_id: str
) -> Dict[str, BundledAggregations]:
"""Generate bundled aggregations for events.
Args:
events: The iterable of events to calculate bundled aggregations for.
user_id: The user requesting the bundled aggregations.
Returns:
A map of event ID to the bundled aggregation for the event. Not all
events may have bundled aggregations in the results.
"""
# De-duplicate events by ID to handle the same event requested multiple times.
#
# State events do not get bundled aggregations.
events_by_id = {
event.event_id: event for event in events if not event.is_state()
}
# event ID -> bundled aggregation in non-serialized form.
results: Dict[str, BundledAggregations] = {}
# Fetch other relations per event.
for event in events_by_id.values():
event_result = await self._get_bundled_aggregation_for_event(event, user_id)
if event_result:
results[event.event_id] = event_result
# Fetch any edits (but not for redacted events).
edits = await self._get_applicable_edits(
[
event_id
for event_id, event in events_by_id.items()
if not event.internal_metadata.is_redacted()
]
)
for event_id, edit in edits.items():
results.setdefault(event_id, BundledAggregations()).replace = edit
# Fetch thread summaries.
summaries = await self._get_thread_summaries(events_by_id.keys())
# Only fetch participated for a limited selection based on what had
# summaries.
participated = await self._get_threads_participated(
[event_id for event_id, summary in summaries.items() if summary], user_id
)
for event_id, summary in summaries.items():
if summary:
thread_count, latest_thread_event, edit = summary
results.setdefault(
event_id, BundledAggregations()
).thread = _ThreadAggregation(
latest_event=latest_thread_event,
latest_edit=edit,
count=thread_count,
# If there's a thread summary it must also exist in the
# participated dictionary.
current_user_participated=participated[event_id],
)
return results
class RelationsStore(RelationsWorkerStore):
pass