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Merge pull request #6156 from matrix-org/erikj/postgres_any 

Use Postgres ANY for selecting many values.
This commit is contained in:
Erik Johnston 2019-10-10 16:41:36 +01:00 committed by GitHub
parent 329eae9cda b54b1e759a
commit 83d86106a8
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
15 changed files with 189 additions and 108 deletions
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1
changelog.d/6156.misc Normal file
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@ -0,0 +1 @@
Use Postgres ANY for selecting many values.

49
synapse/storage/_base.py
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@ -20,6 +20,7 @@ import random
import sys
import threading
import time
from typing import Iterable, Tuple
from six import PY2, iteritems, iterkeys, itervalues
from six.moves import builtins, intern, range
@ -1163,19 +1164,18 @@ class SQLBaseStore(object):
if not iterable:
return []
sql = "SELECT %s FROM %s" % (", ".join(retcols), table)
clauses = []
values = []
clauses.append("%s IN (%s)" % (column, ",".join("?" for _ in iterable)))
values.extend(iterable)
clause, values = make_in_list_sql_clause(txn.database_engine, column, iterable)
clauses = [clause]
for key, value in iteritems(keyvalues):
clauses.append("%s = ?" % (key,))
values.append(value)
if clauses:
sql = "%s WHERE %s" % (sql, " AND ".join(clauses))
sql = "SELECT %s FROM %s WHERE %s" % (
", ".join(retcols),
table,
" AND ".join(clauses),
)
txn.execute(sql, values)
return cls.cursor_to_dict(txn)
@ -1324,10 +1324,8 @@ class SQLBaseStore(object):
sql = "DELETE FROM %s" % table
clauses = []
values = []
clauses.append("%s IN (%s)" % (column, ",".join("?" for _ in iterable)))
values.extend(iterable)
clause, values = make_in_list_sql_clause(txn.database_engine, column, iterable)
clauses = [clause]
for key, value in iteritems(keyvalues):
clauses.append("%s = ?" % (key,))
@ -1694,3 +1692,30 @@ def db_to_json(db_content):
except Exception:
logging.warning("Tried to decode '%r' as JSON and failed", db_content)
raise
def make_in_list_sql_clause(
database_engine, column: str, iterable: Iterable
) -> Tuple[str, Iterable]:
"""Returns an SQL clause that checks the given column is in the iterable.
On SQLite this expands to `column IN (?, ?, ...)`, whereas on Postgres
it expands to `column = ANY(?)`. While both DBs support the `IN` form,
using the `ANY` form on postgres means that it views queries with
different length iterables as the same, helping the query stats.
Args:
database_engine
column: Name of the column
iterable: The values to check the column against.
Returns:
A tuple of SQL query and the args
"""
if database_engine.supports_using_any_list:
# This should hopefully be faster, but also makes postgres query
# stats easier to understand.
return "%s = ANY(?)" % (column,), [list(iterable)]
else:
return "%s IN (%s)" % (column, ",".join("?" for _ in iterable)), list(iterable)

14
synapse/storage/deviceinbox.py
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@ -20,7 +20,7 @@ from canonicaljson import json
from twisted.internet import defer
from synapse.logging.opentracing import log_kv, set_tag, trace
from synapse.storage._base import SQLBaseStore
from synapse.storage._base import SQLBaseStore, make_in_list_sql_clause
from synapse.storage.background_updates import BackgroundUpdateStore
from synapse.util.caches.expiringcache import ExpiringCache
@ -378,15 +378,15 @@ class DeviceInboxStore(DeviceInboxWorkerStore, DeviceInboxBackgroundUpdateStore)
else:
if not devices:
continue
sql = (
"SELECT device_id FROM devices"
" WHERE user_id = ? AND device_id IN ("
+ ",".join("?" * len(devices))
+ ")"
clause, args = make_in_list_sql_clause(
txn.database_engine, "device_id", devices
)
sql = "SELECT device_id FROM devices WHERE user_id = ? AND " + clause
# TODO: Maybe this needs to be done in batches if there are
# too many local devices for a given user.
txn.execute(sql, [user_id] + devices)
txn.execute(sql, [user_id] + list(args))
for row in txn:
# Only insert into the local inbox if the device exists on
# this server

14
synapse/storage/devices.py
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@ -28,7 +28,12 @@ from synapse.logging.opentracing import (
whitelisted_homeserver,
)
from synapse.metrics.background_process_metrics import run_as_background_process
from synapse.storage._base import Cache, SQLBaseStore, db_to_json
from synapse.storage._base import (
Cache,
SQLBaseStore,
db_to_json,
make_in_list_sql_clause,
)
from synapse.storage.background_updates import BackgroundUpdateStore
from synapse.util import batch_iter
from synapse.util.caches.descriptors import cached, cachedInlineCallbacks, cachedList
@ -448,11 +453,14 @@ class DeviceWorkerStore(SQLBaseStore):
sql = """
SELECT DISTINCT user_id FROM device_lists_stream
WHERE stream_id > ?
AND user_id IN (%s)
AND
"""
for chunk in batch_iter(to_check, 100):
txn.execute(sql % (",".join("?" for _ in chunk),), (from_key,) + chunk)
clause, args = make_in_list_sql_clause(
txn.database_engine, "user_id", chunk
)
txn.execute(sql + clause, (from_key,) + tuple(args))
changes.update(user_id for user_id, in txn)
return changes

6
synapse/storage/engines/postgres.py
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@ -86,6 +86,12 @@ class PostgresEngine(object):
"""
return True
@property
def supports_using_any_list(self):
"""Do we support using `a = ANY(?)` and passing a list
"""
return True
def is_deadlock(self, error):
if isinstance(error, self.module.DatabaseError):
# https://www.postgresql.org/docs/current/static/errcodes-appendix.html

6
synapse/storage/engines/sqlite.py
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@ -46,6 +46,12 @@ class Sqlite3Engine(object):
"""
return self.module.sqlite_version_info >= (3, 15, 0)
@property
def supports_using_any_list(self):
"""Do we support using `a = ANY(?)` and passing a list
"""
return False
def check_database(self, txn):
pass

9
synapse/storage/event_federation.py
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@ -25,7 +25,7 @@ from twisted.internet import defer
from synapse.api.errors import StoreError
from synapse.metrics.background_process_metrics import run_as_background_process
from synapse.storage._base import SQLBaseStore
from synapse.storage._base import SQLBaseStore, make_in_list_sql_clause
from synapse.storage.events_worker import EventsWorkerStore
from synapse.storage.signatures import SignatureWorkerStore
from synapse.util.caches.descriptors import cached
@ -68,7 +68,7 @@ class EventFederationWorkerStore(EventsWorkerStore, SignatureWorkerStore, SQLBas
else:
results = set()
base_sql = "SELECT auth_id FROM event_auth WHERE event_id IN (%s)"
base_sql = "SELECT auth_id FROM event_auth WHERE "
front = set(event_ids)
while front:
@ -76,7 +76,10 @@ class EventFederationWorkerStore(EventsWorkerStore, SignatureWorkerStore, SQLBas
front_list = list(front)
chunks = [front_list[x : x + 100] for x in range(0, len(front), 100)]
for chunk in chunks:
txn.execute(base_sql % (",".join(["?"] * len(chunk)),), chunk)
clause, args = make_in_list_sql_clause(
txn.database_engine, "event_id", chunk
)
txn.execute(base_sql + clause, list(args))
new_front.update([r[0] for r in txn])
new_front -= results

44
synapse/storage/events.py
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@ -39,6 +39,7 @@ from synapse.logging.utils import log_function
from synapse.metrics import BucketCollector
from synapse.metrics.background_process_metrics import run_as_background_process
from synapse.state import StateResolutionStore
from synapse.storage._base import make_in_list_sql_clause
from synapse.storage.background_updates import BackgroundUpdateStore
from synapse.storage.event_federation import EventFederationStore
from synapse.storage.events_worker import EventsWorkerStore
@ -641,14 +642,16 @@ class EventsStore(
LEFT JOIN rejections USING (event_id)
LEFT JOIN event_json USING (event_id)
WHERE
prev_event_id IN (%s)
AND NOT events.outlier
NOT events.outlier
AND rejections.event_id IS NULL
""" % (
",".join("?" for _ in batch),
AND
"""
clause, args = make_in_list_sql_clause(
self.database_engine, "prev_event_id", batch
)
txn.execute(sql, batch)
txn.execute(sql + clause, args)
results.extend(r[0] for r in txn if not json.loads(r[1]).get("soft_failed"))
for chunk in batch_iter(event_ids, 100):
@ -695,13 +698,15 @@ class EventsStore(
LEFT JOIN rejections USING (event_id)
LEFT JOIN event_json USING (event_id)
WHERE
event_id IN (%s)
AND NOT events.outlier
""" % (
",".join("?" for _ in to_recursively_check),
NOT events.outlier
AND
"""
clause, args = make_in_list_sql_clause(
self.database_engine, "event_id", to_recursively_check
)
txn.execute(sql, to_recursively_check)
txn.execute(sql + clause, args)
to_recursively_check = []
for event_id, prev_event_id, metadata, rejected in txn:
@ -1543,10 +1548,14 @@ class EventsStore(
" FROM events as e"
" LEFT JOIN rejections as rej USING (event_id)"
" LEFT JOIN redactions as r ON e.event_id = r.redacts"
" WHERE e.event_id IN (%s)"
) % (",".join(["?"] * len(ev_map)),)
" WHERE "
)
txn.execute(sql, list(ev_map))
clause, args = make_in_list_sql_clause(
self.database_engine, "e.event_id", list(ev_map)
)
txn.execute(sql + clause, args)
rows = self.cursor_to_dict(txn)
for row in rows:
event = ev_map[row["event_id"]]
@ -2249,11 +2258,12 @@ class EventsStore(
sql = """
SELECT DISTINCT state_group FROM event_to_state_groups
LEFT JOIN events_to_purge AS ep USING (event_id)
WHERE state_group IN (%s) AND ep.event_id IS NULL
""" % (
",".join("?" for _ in current_search),
WHERE ep.event_id IS NULL AND
"""
clause, args = make_in_list_sql_clause(
txn.database_engine, "state_group", current_search
)
txn.execute(sql, list(current_search))
txn.execute(sql + clause, list(args))
referenced = set(sg for sg, in txn)
referenced_groups |= referenced

12
synapse/storage/events_bg_updates.py
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@ -21,6 +21,7 @@ from canonicaljson import json
from twisted.internet import defer
from synapse.storage._base import make_in_list_sql_clause
from synapse.storage.background_updates import BackgroundUpdateStore
logger = logging.getLogger(__name__)
@ -325,12 +326,13 @@ class EventsBackgroundUpdatesStore(BackgroundUpdateStore):
INNER JOIN event_json USING (event_id)
LEFT JOIN rejections USING (event_id)
WHERE
prev_event_id IN (%s)
AND NOT events.outlier
""" % (
",".join("?" for _ in to_check),
NOT events.outlier
AND
"""
clause, args = make_in_list_sql_clause(
self.database_engine, "prev_event_id", to_check
)
txn.execute(sql, to_check)
txn.execute(sql + clause, list(args))
for prev_event_id, event_id, metadata, rejected in txn:
if event_id in graph:

28
synapse/storage/events_worker.py
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@ -31,12 +31,11 @@ from synapse.events.snapshot import EventContext # noqa: F401
from synapse.events.utils import prune_event
from synapse.logging.context import LoggingContext, PreserveLoggingContext
from synapse.metrics.background_process_metrics import run_as_background_process
from synapse.storage._base import SQLBaseStore, make_in_list_sql_clause
from synapse.types import get_domain_from_id
from synapse.util import batch_iter
from synapse.util.metrics import Measure
from ._base import SQLBaseStore
logger = logging.getLogger(__name__)
@ -623,10 +622,14 @@ class EventsWorkerStore(SQLBaseStore):
" rej.reason "
" FROM event_json as e"
" LEFT JOIN rejections as rej USING (event_id)"
" WHERE e.event_id IN (%s)"
) % (",".join(["?"] * len(evs)),)
" WHERE "
)
txn.execute(sql, evs)
clause, args = make_in_list_sql_clause(
txn.database_engine, "e.event_id", evs
)
txn.execute(sql + clause, args)
for row in txn:
event_id = row[0]
@ -640,11 +643,11 @@ class EventsWorkerStore(SQLBaseStore):
}
# check for redactions
redactions_sql = (
"SELECT event_id, redacts FROM redactions WHERE redacts IN (%s)"
) % (",".join(["?"] * len(evs)),)
redactions_sql = "SELECT event_id, redacts FROM redactions WHERE "
txn.execute(redactions_sql, evs)
clause, args = make_in_list_sql_clause(txn.database_engine, "redacts", evs)
txn.execute(redactions_sql + clause, args)
for (redacter, redacted) in txn:
d = event_dict.get(redacted)
@ -753,10 +756,11 @@ class EventsWorkerStore(SQLBaseStore):
results = set()
def have_seen_events_txn(txn, chunk):
sql = "SELECT event_id FROM events as e WHERE e.event_id IN (%s)" % (
",".join("?" * len(chunk)),
sql = "SELECT event_id FROM events as e WHERE "
clause, args = make_in_list_sql_clause(
txn.database_engine, "e.event_id", chunk
)
txn.execute(sql, chunk)
txn.execute(sql + clause, args)
for (event_id,) in txn:
results.add(event_id)

14
synapse/storage/presence.py
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@ -18,11 +18,10 @@ from collections import namedtuple
from twisted.internet import defer
from synapse.api.constants import PresenceState
from synapse.storage._base import SQLBaseStore, make_in_list_sql_clause
from synapse.util import batch_iter
from synapse.util.caches.descriptors import cached, cachedList
from ._base import SQLBaseStore
class UserPresenceState(
namedtuple(
@ -119,14 +118,13 @@ class PresenceStore(SQLBaseStore):
)
# Delete old rows to stop database from getting really big
sql = (
"DELETE FROM presence_stream WHERE" " stream_id < ?" " AND user_id IN (%s)"
)
sql = "DELETE FROM presence_stream WHERE stream_id < ? AND "
for states in batch_iter(presence_states, 50):
args = [stream_id]
args.extend(s.user_id for s in states)
txn.execute(sql % (",".join("?" for _ in states),), args)
clause, args = make_in_list_sql_clause(
self.database_engine, "user_id", [s.user_id for s in states]
)
txn.execute(sql + clause, [stream_id] + list(args))
def get_all_presence_updates(self, last_id, current_id):
if last_id == current_id:

53
synapse/storage/receipts.py
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@ -21,12 +21,11 @@ from canonicaljson import json
from twisted.internet import defer
from synapse.storage._base import SQLBaseStore, make_in_list_sql_clause
from synapse.storage.util.id_generators import StreamIdGenerator
from synapse.util.caches.descriptors import cached, cachedInlineCallbacks, cachedList
from synapse.util.caches.stream_change_cache import StreamChangeCache
from ._base import SQLBaseStore
from .util.id_generators import StreamIdGenerator
logger = logging.getLogger(__name__)
@ -217,24 +216,26 @@ class ReceiptsWorkerStore(SQLBaseStore):
def f(txn):
if from_key:
sql = (
"SELECT * FROM receipts_linearized WHERE"
" room_id IN (%s) AND stream_id > ? AND stream_id <= ?"
) % (",".join(["?"] * len(room_ids)))
args = list(room_ids)
args.extend([from_key, to_key])
sql = """
SELECT * FROM receipts_linearized WHERE
stream_id > ? AND stream_id <= ? AND
"""
clause, args = make_in_list_sql_clause(
self.database_engine, "room_id", room_ids
)
txn.execute(sql, args)
txn.execute(sql + clause, [from_key, to_key] + list(args))
else:
sql = (
"SELECT * FROM receipts_linearized WHERE"
" room_id IN (%s) AND stream_id <= ?"
) % (",".join(["?"] * len(room_ids)))
sql = """
SELECT * FROM receipts_linearized WHERE
stream_id <= ? AND
"""
args = list(room_ids)
args.append(to_key)
clause, args = make_in_list_sql_clause(
self.database_engine, "room_id", room_ids
)
txn.execute(sql, args)
txn.execute(sql + clause, [to_key] + list(args))
return self.cursor_to_dict(txn)
@ -433,13 +434,19 @@ class ReceiptsStore(ReceiptsWorkerStore):
# we need to points in graph -> linearized form.
# TODO: Make this better.
def graph_to_linear(txn):
query = (
"SELECT event_id WHERE room_id = ? AND stream_ordering IN ("
" SELECT max(stream_ordering) WHERE event_id IN (%s)"
")"
) % (",".join(["?"] * len(event_ids)))
clause, args = make_in_list_sql_clause(
self.database_engine, "event_id", event_ids
)
txn.execute(query, [room_id] + event_ids)
sql = """
SELECT event_id WHERE room_id = ? AND stream_ordering IN (
SELECT max(stream_ordering) WHERE %s
)
""" % (
clause,
)
txn.execute(sql, [room_id] + list(args))
rows = txn.fetchall()
if rows:
return rows[0][0]

18
synapse/storage/roommember.py
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@ -26,7 +26,7 @@ from twisted.internet import defer
from synapse.api.constants import EventTypes, Membership
from synapse.metrics import LaterGauge
from synapse.metrics.background_process_metrics import run_as_background_process
from synapse.storage._base import LoggingTransaction
from synapse.storage._base import LoggingTransaction, make_in_list_sql_clause
from synapse.storage.background_updates import BackgroundUpdateStore
from synapse.storage.engines import Sqlite3Engine
from synapse.storage.events_worker import EventsWorkerStore
@ -372,6 +372,9 @@ class RoomMemberWorkerStore(EventsWorkerStore):
results = []
if membership_list:
if self._current_state_events_membership_up_to_date:
clause, args = make_in_list_sql_clause(
self.database_engine, "c.membership", membership_list
)
sql = """
SELECT room_id, e.sender, c.membership, event_id, e.stream_ordering
FROM current_state_events AS c
@ -379,11 +382,14 @@ class RoomMemberWorkerStore(EventsWorkerStore):
WHERE
c.type = 'm.room.member'
AND state_key = ?
AND c.membership IN (%s)
AND %s
""" % (
",".join("?" * len(membership_list))
clause,
)
else:
clause, args = make_in_list_sql_clause(
self.database_engine, "m.membership", membership_list
)
sql = """
SELECT room_id, e.sender, m.membership, event_id, e.stream_ordering
FROM current_state_events AS c
@ -392,12 +398,12 @@ class RoomMemberWorkerStore(EventsWorkerStore):
WHERE
c.type = 'm.room.member'
AND state_key = ?
AND m.membership IN (%s)
AND %s
""" % (
",".join("?" * len(membership_list))
clause,
)
txn.execute(sql, (user_id, *membership_list))
txn.execute(sql, (user_id, *args))
results = [RoomsForUser(**r) for r in self.cursor_to_dict(txn)]
if do_invite:

13
synapse/storage/search.py
View File

@ -24,6 +24,7 @@ from canonicaljson import json
from twisted.internet import defer
from synapse.api.errors import SynapseError
from synapse.storage._base import make_in_list_sql_clause
from synapse.storage.engines import PostgresEngine, Sqlite3Engine
from .background_updates import BackgroundUpdateStore
@ -385,8 +386,10 @@ class SearchStore(SearchBackgroundUpdateStore):
# Make sure we don't explode because the person is in too many rooms.
# We filter the results below regardless.
if len(room_ids) < 500:
clauses.append("room_id IN (%s)" % (",".join(["?"] * len(room_ids)),))
args.extend(room_ids)
clause, args = make_in_list_sql_clause(
self.database_engine, "room_id", room_ids
)
clauses = [clause]
local_clauses = []
for key in keys:
@ -492,8 +495,10 @@ class SearchStore(SearchBackgroundUpdateStore):
# Make sure we don't explode because the person is in too many rooms.
# We filter the results below regardless.
if len(room_ids) < 500:
clauses.append("room_id IN (%s)" % (",".join(["?"] * len(room_ids)),))
args.extend(room_ids)
clause, args = make_in_list_sql_clause(
self.database_engine, "room_id", room_ids
)
clauses = [clause]
local_clauses = []
for key in keys:

16
synapse/storage/user_erasure_store.py
View File

@ -56,15 +56,15 @@ class UserErasureWorkerStore(SQLBaseStore):
# iterate it multiple times, and (b) avoiding duplicates.
user_ids = tuple(set(user_ids))
def _get_erased_users(txn):
txn.execute(
"SELECT user_id FROM erased_users WHERE user_id IN (%s)"
% (",".join("?" * len(user_ids))),
user_ids,
)
return set(r[0] for r in txn)
rows = yield self._simple_select_many_batch(
table="erased_users",
column="user_id",
iterable=user_ids,
retcols=("user_id",),
desc="are_users_erased",
)
erased_users = set(row["user_id"] for row in rows)
erased_users = yield self.runInteraction("are_users_erased", _get_erased_users)
res = dict((u, u in erased_users) for u in user_ids)
return res