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Optimise `_update_client_ips_batch_txn` to batch together database operations. (#12252) 

Co-authored-by: Patrick Cloke <clokep@users.noreply.github.com>
This commit is contained in:
reivilibre 2022-04-08 15:29:13 +01:00 committed by GitHub
parent 0cd182f296
commit e630722f11
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4 changed files with 191 additions and 52 deletions
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1
changelog.d/12252.feature Normal file
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@ -0,0 +1 @@
Move `update_client_ip` background job from the main process to the background worker.

101
synapse/storage/database.py
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@ -1268,6 +1268,7 @@ class DatabasePool:
value_names: Collection[str],
value_values: Collection[Collection[Any]],
desc: str,
lock: bool = True,
) -> None:
"""
Upsert, many times.
@ -1279,6 +1280,8 @@ class DatabasePool:
value_names: The value column names
value_values: A list of each row's value column values.
Ignored if value_names is empty.
lock: True to lock the table when doing the upsert. Unused if the database engine
supports native upserts.
"""
# We can autocommit if we are going to use native upserts
@ -1286,7 +1289,7 @@ class DatabasePool:
self.engine.can_native_upsert and table not in self._unsafe_to_upsert_tables
)
return await self.runInteraction(
await self.runInteraction(
desc,
self.simple_upsert_many_txn,
table,
@ -1294,6 +1297,7 @@ class DatabasePool:
key_values,
value_names,
value_values,
lock=lock,
db_autocommit=autocommit,
)
@ -1305,6 +1309,7 @@ class DatabasePool:
key_values: Collection[Iterable[Any]],
value_names: Collection[str],
value_values: Iterable[Iterable[Any]],
lock: bool = True,
) -> None:
"""
Upsert, many times.
@ -1316,6 +1321,8 @@ class DatabasePool:
value_names: The value column names
value_values: A list of each row's value column values.
Ignored if value_names is empty.
lock: True to lock the table when doing the upsert. Unused if the database engine
supports native upserts.
"""
if self.engine.can_native_upsert and table not in self._unsafe_to_upsert_tables:
return self.simple_upsert_many_txn_native_upsert(
@ -1323,7 +1330,7 @@ class DatabasePool:
)
else:
return self.simple_upsert_many_txn_emulated(
txn, table, key_names, key_values, value_names, value_values
txn, table, key_names, key_values, value_names, value_values, lock=lock
)
def simple_upsert_many_txn_emulated(
@ -1334,6 +1341,7 @@ class DatabasePool:
key_values: Collection[Iterable[Any]],
value_names: Collection[str],
value_values: Iterable[Iterable[Any]],
lock: bool = True,
) -> None:
"""
Upsert, many times, but without native UPSERT support or batching.
@ -1345,17 +1353,24 @@ class DatabasePool:
value_names: The value column names
value_values: A list of each row's value column values.
Ignored if value_names is empty.
lock: True to lock the table when doing the upsert.
"""
# No value columns, therefore make a blank list so that the following
# zip() works correctly.
if not value_names:
value_values = [() for x in range(len(key_values))]
if lock:
# Lock the table just once, to prevent it being done once per row.
# Note that, according to Postgres' documentation, once obtained,
# the lock is held for the remainder of the current transaction.
self.engine.lock_table(txn, "user_ips")
for keyv, valv in zip(key_values, value_values):
_keys = {x: y for x, y in zip(key_names, keyv)}
_vals = {x: y for x, y in zip(value_names, valv)}
self.simple_upsert_txn_emulated(txn, table, _keys, _vals)
self.simple_upsert_txn_emulated(txn, table, _keys, _vals, lock=False)
def simple_upsert_many_txn_native_upsert(
self,
@ -1792,6 +1807,86 @@ class DatabasePool:
return txn.rowcount
async def simple_update_many(
self,
table: str,
key_names: Collection[str],
key_values: Collection[Iterable[Any]],
value_names: Collection[str],
value_values: Iterable[Iterable[Any]],
desc: str,
) -> None:
"""
Update, many times, using batching where possible.
If the keys don't match anything, nothing will be updated.
Args:
table: The table to update
key_names: The key column names.
key_values: A list of each row's key column values.
value_names: The names of value columns to update.
value_values: A list of each row's value column values.
"""
await self.runInteraction(
desc,
self.simple_update_many_txn,
table,
key_names,
key_values,
value_names,
value_values,
)
@staticmethod
def simple_update_many_txn(
txn: LoggingTransaction,
table: str,
key_names: Collection[str],
key_values: Collection[Iterable[Any]],
value_names: Collection[str],
value_values: Collection[Iterable[Any]],
) -> None:
"""
Update, many times, using batching where possible.
If the keys don't match anything, nothing will be updated.
Args:
table: The table to update
key_names: The key column names.
key_values: A list of each row's key column values.
value_names: The names of value columns to update.
value_values: A list of each row's value column values.
"""
if len(value_values) != len(key_values):
raise ValueError(
f"{len(key_values)} key rows and {len(value_values)} value rows: should be the same number."
)
# List of tuples of (value values, then key values)
# (This matches the order needed for the query)
args = [tuple(x) + tuple(y) for x, y in zip(value_values, key_values)]
for ks, vs in zip(key_values, value_values):
args.append(tuple(vs) + tuple(ks))
# 'col1 = ?, col2 = ?, ...'
set_clause = ", ".join(f"{n} = ?" for n in value_names)
if key_names:
# 'WHERE col3 = ? AND col4 = ? AND col5 = ?'
where_clause = "WHERE " + (" AND ".join(f"{n} = ?" for n in key_names))
else:
where_clause = ""
# UPDATE mytable SET col1 = ?, col2 = ? WHERE col3 = ? AND col4 = ?
sql = f"""
UPDATE {table} SET {set_clause} {where_clause}
"""
txn.execute_batch(sql, args)
async def simple_update_one(
self,
table: str,

66
synapse/storage/databases/main/client_ips.py
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@ -616,9 +616,10 @@ class ClientIpWorkerStore(ClientIpBackgroundUpdateStore, MonthlyActiveUsersWorke
to_update = self._batch_row_update
self._batch_row_update = {}
await self.db_pool.runInteraction(
"_update_client_ips_batch", self._update_client_ips_batch_txn, to_update
)
if to_update:
await self.db_pool.runInteraction(
"_update_client_ips_batch", self._update_client_ips_batch_txn, to_update
)
def _update_client_ips_batch_txn(
self,
@ -629,42 +630,43 @@ class ClientIpWorkerStore(ClientIpBackgroundUpdateStore, MonthlyActiveUsersWorke
self._update_on_this_worker
), "This worker is not designated to update client IPs"
if "user_ips" in self.db_pool._unsafe_to_upsert_tables or (
not self.database_engine.can_native_upsert
):
self.database_engine.lock_table(txn, "user_ips")
# Keys and values for the `user_ips` upsert.
user_ips_keys = []
user_ips_values = []
# Keys and values for the `devices` update.
devices_keys = []
devices_values = []
for entry in to_update.items():
(user_id, access_token, ip), (user_agent, device_id, last_seen) = entry
self.db_pool.simple_upsert_txn(
txn,
table="user_ips",
keyvalues={"user_id": user_id, "access_token": access_token, "ip": ip},
values={
"user_agent": user_agent,
"device_id": device_id,
"last_seen": last_seen,
},
lock=False,
)
user_ips_keys.append((user_id, access_token, ip))
user_ips_values.append((user_agent, device_id, last_seen))
# Technically an access token might not be associated with
# a device so we need to check.
if device_id:
# this is always an update rather than an upsert: the row should
# already exist, and if it doesn't, that may be because it has been
# deleted, and we don't want to re-create it.
self.db_pool.simple_update_txn(
txn,
table="devices",
keyvalues={"user_id": user_id, "device_id": device_id},
updatevalues={
"user_agent": user_agent,
"last_seen": last_seen,
"ip": ip,
},
)
devices_keys.append((user_id, device_id))
devices_values.append((user_agent, last_seen, ip))
self.db_pool.simple_upsert_many_txn(
txn,
table="user_ips",
key_names=("user_id", "access_token", "ip"),
key_values=user_ips_keys,
value_names=("user_agent", "device_id", "last_seen"),
value_values=user_ips_values,
)
if devices_values:
self.db_pool.simple_update_many_txn(
txn,
table="devices",
key_names=("user_id", "device_id"),
key_values=devices_keys,
value_names=("user_agent", "last_seen", "ip"),
value_values=devices_values,
)
async def get_last_client_ip_by_device(
self, user_id: str, device_id: Optional[str]

75
tests/storage/test__base.py
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@ -14,7 +14,7 @@
# limitations under the License.
import secrets
from typing import Any, Dict, Generator, List, Tuple
from typing import Generator, Tuple
from twisted.test.proto_helpers import MemoryReactor
@ -24,7 +24,7 @@ from synapse.util import Clock
from tests import unittest
class UpsertManyTests(unittest.HomeserverTestCase):
class UpdateUpsertManyTests(unittest.HomeserverTestCase):
def prepare(self, reactor: MemoryReactor, clock: Clock, hs: HomeServer) -> None:
self.storage = hs.get_datastores().main
@ -46,9 +46,13 @@ class UpsertManyTests(unittest.HomeserverTestCase):
)
)
def _dump_to_tuple(
self, res: List[Dict[str, Any]]
) -> Generator[Tuple[int, str, str], None, None]:
def _dump_table_to_tuple(self) -> Generator[Tuple[int, str, str], None, None]:
res = self.get_success(
self.storage.db_pool.simple_select_list(
self.table_name, None, ["id, username, value"]
)
)
for i in res:
yield (i["id"], i["username"], i["value"])
@ -75,13 +79,8 @@ class UpsertManyTests(unittest.HomeserverTestCase):
)
# Check results are what we expect
res = self.get_success(
self.storage.db_pool.simple_select_list(
self.table_name, None, ["id, username, value"]
)
)
self.assertEqual(
set(self._dump_to_tuple(res)),
set(self._dump_table_to_tuple()),
{(1, "user1", "hello"), (2, "user2", "there")},
)
@ -102,12 +101,54 @@ class UpsertManyTests(unittest.HomeserverTestCase):
)
# Check results are what we expect
res = self.get_success(
self.storage.db_pool.simple_select_list(
self.table_name, None, ["id, username, value"]
)
)
self.assertEqual(
set(self._dump_to_tuple(res)),
set(self._dump_table_to_tuple()),
{(1, "user1", "hello"), (2, "user2", "bleb")},
)
def test_simple_update_many(self):
"""
simple_update_many performs many updates at once.
"""
# First add some data.
self.get_success(
self.storage.db_pool.simple_insert_many(
table=self.table_name,
keys=("id", "username", "value"),
values=[(1, "alice", "A"), (2, "bob", "B"), (3, "charlie", "C")],
desc="insert",
)
)
# Check the data made it to the table
self.assertEqual(
set(self._dump_table_to_tuple()),
{(1, "alice", "A"), (2, "bob", "B"), (3, "charlie", "C")},
)
# Now use simple_update_many
self.get_success(
self.storage.db_pool.simple_update_many(
table=self.table_name,
key_names=("username",),
key_values=(
("alice",),
("bob",),
("stranger",),
),
value_names=("value",),
value_values=(
("aaa!",),
("bbb!",),
("???",),
),
desc="update_many1",
)
)
# Check the table is how we expect:
# charlie has been left alone
self.assertEqual(
set(self._dump_table_to_tuple()),
{(1, "alice", "aaa!"), (2, "bob", "bbb!"), (3, "charlie", "C")},
)