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Merge remote-tracking branch 'origin/release-v1.20.0' into develop

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This commit is contained in:
Richard van der Hoff 2020-09-08 09:58:07 +01:00
commit 8d6f97f932
11 changed files with 122 additions and 36 deletions
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1
changelog.d/8264.misc Normal file
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@ -0,0 +1 @@
Add more logging to debug slow startup.

1
changelog.d/8266.misc Normal file
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@ -0,0 +1 @@
Do not attempt to upgrade upgrade database schema on worker processes.

1
changelog.d/8270.feature Normal file
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@ -0,0 +1 @@
Add unread messages count to sync responses, as specified in [MSC2654](https://github.com/matrix-org/matrix-doc/pull/2654).

1
changelog.d/8271.bugfix Normal file
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@ -0,0 +1 @@
Fix slow start times for large servers by removing a table scan of the `users` table from startup code.

1
changelog.d/8274.feature Normal file
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@ -0,0 +1 @@
Add unread messages count to sync responses, as specified in [MSC2654](https://github.com/matrix-org/matrix-doc/pull/2654).

7
synapse/push/bulk_push_rule_evaluator.py
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@ -219,7 +219,12 @@ class BulkPushRuleEvaluator:
if event.type == EventTypes.Member and event.state_key == uid:
display_name = event.content.get("displayname", None)
actions_by_user[uid] = []
if count_as_unread:
# Add an element for the current user if the event needs to be marked as
# unread, so that add_push_actions_to_staging iterates over it.
# If the event shouldn't be marked as unread but should notify the
# current user, it'll be added to the dict later.
actions_by_user[uid] = []
for rule in rules:
if "enabled" in rule and not rule["enabled"]:

23
synapse/storage/databases/__init__.py
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@ -47,9 +47,14 @@ class Databases:
engine = create_engine(database_config.config)
with make_conn(database_config, engine) as db_conn:
logger.info("Preparing database %r...", db_name)
logger.info("[database config %r]: Checking database server", db_name)
engine.check_database(db_conn)
logger.info(
"[database config %r]: Preparing for databases %r",
db_name,
database_config.databases,
)
prepare_database(
db_conn, engine, hs.config, databases=database_config.databases,
)
@ -57,7 +62,9 @@ class Databases:
database = DatabasePool(hs, database_config, engine)
if "main" in database_config.databases:
logger.info("Starting 'main' data store")
logger.info(
"[database config %r]: Starting 'main' database", db_name
)
# Sanity check we don't try and configure the main store on
# multiple databases.
@ -72,7 +79,9 @@ class Databases:
persist_events = PersistEventsStore(hs, database, main)
if "state" in database_config.databases:
logger.info("Starting 'state' data store")
logger.info(
"[database config %r]: Starting 'state' database", db_name
)
# Sanity check we don't try and configure the state store on
# multiple databases.
@ -85,7 +94,7 @@ class Databases:
self.databases.append(database)
logger.info("Database %r prepared", db_name)
logger.info("[database config %r]: prepared", db_name)
# Closing the context manager doesn't close the connection.
# psycopg will close the connection when the object gets GCed, but *only*
@ -98,10 +107,10 @@ class Databases:
# Sanity check that we have actually configured all the required stores.
if not main:
raise Exception("No 'main' data store configured")
raise Exception("No 'main' database configured")
if not state:
raise Exception("No 'state' data store configured")
raise Exception("No 'state' database configured")
# We use local variables here to ensure that the databases do not have
# optional types.

24
synapse/storage/databases/main/__init__.py
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@ -29,6 +29,7 @@ from synapse.storage.util.id_generators import (
MultiWriterIdGenerator,
StreamIdGenerator,
)
from synapse.types import get_domain_from_id
from synapse.util.caches.stream_change_cache import StreamChangeCache
from .account_data import AccountDataStore
@ -591,21 +592,24 @@ def check_database_before_upgrade(cur, database_engine, config: HomeServerConfig
"""Called before upgrading an existing database to check that it is broadly sane
compared with the configuration.
"""
domain = config.server_name
logger.info("Checking database for consistency with configuration...")
sql = database_engine.convert_param_style(
"SELECT COUNT(*) FROM users WHERE name NOT LIKE ?"
)
pat = "%:" + domain
cur.execute(sql, (pat,))
num_not_matching = cur.fetchall()[0][0]
if num_not_matching == 0:
# if there are any users in the database, check that the username matches our
# configured server name.
cur.execute("SELECT name FROM users LIMIT 1")
rows = cur.fetchall()
if not rows:
return
user_domain = get_domain_from_id(rows[0][0])
if user_domain == config.server_name:
return
raise Exception(
"Found users in database not native to %s!\n"
"You cannot changed a synapse server_name after it's been configured"
% (domain,)
"You cannot change a synapse server_name after it's been configured"
% (config.server_name,)
)

7
synapse/storage/databases/main/event_push_actions.py
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@ -177,7 +177,12 @@ class EventPushActionsWorkerStore(SQLBaseStore):
if row:
notif_count += row[0]
unread_count += row[1]
if row[1] is not None:
# The unread_count column of event_push_summary is NULLable, so we need
# to make sure we don't try increasing the unread counts if it's NULL
# for this row.
unread_count += row[1]
return {
"notify_count": notif_count,

87
synapse/storage/prepare_database.py
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@ -50,6 +50,22 @@ class UpgradeDatabaseException(PrepareDatabaseException):
pass
OUTDATED_SCHEMA_ON_WORKER_ERROR = (
"Expected database schema version %i but got %i: run the main synapse process to "
"upgrade the database schema before starting worker processes."
)
EMPTY_DATABASE_ON_WORKER_ERROR = (
"Uninitialised database: run the main synapse process to prepare the database "
"schema before starting worker processes."
)
UNAPPLIED_DELTA_ON_WORKER_ERROR = (
"Database schema delta %s has not been applied: run the main synapse process to "
"upgrade the database schema before starting worker processes."
)
def prepare_database(
db_conn: Connection,
database_engine: BaseDatabaseEngine,
@ -83,30 +99,49 @@ def prepare_database(
# at all, so this is redundant but harmless there.)
cur.execute("BEGIN TRANSACTION")
logger.info("%r: Checking existing schema version", databases)
version_info = _get_or_create_schema_state(cur, database_engine)
if version_info:
user_version, delta_files, upgraded = version_info
logger.info(
"%r: Existing schema is %i (+%i deltas)",
databases,
user_version,
len(delta_files),
)
# config should only be None when we are preparing an in-memory SQLite db,
# which should be empty.
if config is None:
if user_version != SCHEMA_VERSION:
# If we don't pass in a config file then we are expecting to
# have already upgraded the DB.
raise UpgradeDatabaseException(
"Expected database schema version %i but got %i"
% (SCHEMA_VERSION, user_version)
)
else:
_upgrade_existing_database(
cur,
user_version,
delta_files,
upgraded,
database_engine,
config,
databases=databases,
raise ValueError(
"config==None in prepare_database, but databse is not empty"
)
# if it's a worker app, refuse to upgrade the database, to avoid multiple
# workers doing it at once.
if config.worker_app is not None and user_version != SCHEMA_VERSION:
raise UpgradeDatabaseException(
OUTDATED_SCHEMA_ON_WORKER_ERROR % (SCHEMA_VERSION, user_version)
)
_upgrade_existing_database(
cur,
user_version,
delta_files,
upgraded,
database_engine,
config,
databases=databases,
)
else:
logger.info("%r: Initialising new database", databases)
# if it's a worker app, refuse to upgrade the database, to avoid multiple
# workers doing it at once.
if config and config.worker_app is not None:
raise UpgradeDatabaseException(EMPTY_DATABASE_ON_WORKER_ERROR)
_setup_new_database(cur, database_engine, databases=databases)
# check if any of our configured dynamic modules want a database
@ -312,6 +347,8 @@ def _upgrade_existing_database(
else:
assert config
is_worker = config and config.worker_app is not None
if current_version > SCHEMA_VERSION:
raise ValueError(
"Cannot use this database as it is too "
@ -339,7 +376,7 @@ def _upgrade_existing_database(
specific_engine_extensions = (".sqlite", ".postgres")
for v in range(start_ver, SCHEMA_VERSION + 1):
logger.info("Upgrading schema to v%d", v)
logger.info("Applying schema deltas for v%d", v)
# We need to search both the global and per data store schema
# directories for schema updates.
@ -399,9 +436,15 @@ def _upgrade_existing_database(
continue
root_name, ext = os.path.splitext(file_name)
if ext == ".py":
# This is a python upgrade module. We need to import into some
# package and then execute its `run_upgrade` function.
if is_worker:
raise PrepareDatabaseException(
UNAPPLIED_DELTA_ON_WORKER_ERROR % relative_path
)
module_name = "synapse.storage.v%d_%s" % (v, root_name)
with open(absolute_path) as python_file:
module = imp.load_source(module_name, absolute_path, python_file)
@ -416,10 +459,18 @@ def _upgrade_existing_database(
continue
elif ext == ".sql":
# A plain old .sql file, just read and execute it
if is_worker:
raise PrepareDatabaseException(
UNAPPLIED_DELTA_ON_WORKER_ERROR % relative_path
)
logger.info("Applying schema %s", relative_path)
executescript(cur, absolute_path)
elif ext == specific_engine_extension and root_name.endswith(".sql"):
# A .sql file specific to our engine; just read and execute it
if is_worker:
raise PrepareDatabaseException(
UNAPPLIED_DELTA_ON_WORKER_ERROR % relative_path
)
logger.info("Applying engine-specific schema %s", relative_path)
executescript(cur, absolute_path)
elif ext in specific_engine_extensions and root_name.endswith(".sql"):
@ -449,6 +500,8 @@ def _upgrade_existing_database(
(v, True),
)
logger.info("Schema now up to date")
def _apply_module_schemas(txn, database_engine, config):
"""Apply the module schemas for the dynamic modules, if any

5
synapse/storage/util/id_generators.py
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@ -15,6 +15,7 @@
import contextlib
import heapq
import logging
import threading
from collections import deque
from typing import Dict, List, Set
@ -24,6 +25,8 @@ from typing_extensions import Deque
from synapse.storage.database import DatabasePool, LoggingTransaction
from synapse.storage.util.sequence import PostgresSequenceGenerator
logger = logging.getLogger(__name__)
class IdGenerator:
def __init__(self, db_conn, table, column):
@ -48,6 +51,8 @@ def _load_current_id(db_conn, table, column, step=1):
Returns:
int
"""
# debug logging for https://github.com/matrix-org/synapse/issues/7968
logger.info("initialising stream generator for %s(%s)", table, column)
cur = db_conn.cursor()
if step == 1:
cur.execute("SELECT MAX(%s) FROM %s" % (column, table))