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Add additional type hints to the storage module. (#8980)

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Patrick Cloke 2020-12-30 08:09:53 -05:00 committed by GitHub
parent b8591899ab
commit 637282bb50
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12 changed files with 224 additions and 148 deletions
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1
changelog.d/8980.misc Normal file
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@ -0,0 +1 @@
Add type hints to the base storage code.

10
mypy.ini
View file

@ -70,6 +70,9 @@ files =
synapse/server_notices,
synapse/spam_checker_api,
synapse/state,
synapse/storage/__init__.py,
synapse/storage/_base.py,
synapse/storage/background_updates.py,
synapse/storage/databases/main/appservice.py,
synapse/storage/databases/main/events.py,
synapse/storage/databases/main/pusher.py,
@ -78,8 +81,15 @@ files =
synapse/storage/databases/main/ui_auth.py,
synapse/storage/database.py,
synapse/storage/engines,
synapse/storage/keys.py,
synapse/storage/persist_events.py,
synapse/storage/prepare_database.py,
synapse/storage/purge_events.py,
synapse/storage/push_rule.py,
synapse/storage/relations.py,
synapse/storage/roommember.py,
synapse/storage/state.py,
synapse/storage/types.py,
synapse/storage/util,
synapse/streams,
synapse/types.py,

4
synapse/handlers/initial_sync.py
View file

@ -323,9 +323,7 @@ class InitialSyncHandler(BaseHandler):
member_event_id: str,
is_peeking: bool,
) -> JsonDict:
room_state = await self.state_store.get_state_for_events([member_event_id])
room_state = room_state[member_event_id]
room_state = await self.state_store.get_state_for_event(member_event_id)
limit = pagin_config.limit if pagin_config else None
if limit is None:

2
synapse/handlers/sync.py
View file

@ -554,7 +554,7 @@ class SyncHandler:
event.event_id, state_filter=state_filter
)
if event.is_state():
state_ids = state_ids.copy()
state_ids = dict(state_ids)
state_ids[(event.type, event.state_key)] = event.event_id
return state_ids

9
synapse/storage/__init__.py
View file

@ -27,6 +27,7 @@ There are also schemas that get applied to every database, regardless of the
data stores associated with them (e.g. the schema version tables), which are
stored in `synapse.storage.schema`.
"""
from typing import TYPE_CHECKING
from synapse.storage.databases import Databases
from synapse.storage.databases.main import DataStore
@ -34,14 +35,18 @@ from synapse.storage.persist_events import EventsPersistenceStorage
from synapse.storage.purge_events import PurgeEventsStorage
from synapse.storage.state import StateGroupStorage
__all__ = ["DataStores", "DataStore"]
if TYPE_CHECKING:
from synapse.app.homeserver import HomeServer
__all__ = ["Databases", "DataStore"]
class Storage:
"""The high level interfaces for talking to various storage layers.
"""
def __init__(self, hs, stores: Databases):
def __init__(self, hs: "HomeServer", stores: Databases):
# We include the main data store here mainly so that we don't have to
# rewrite all the existing code to split it into high vs low level
# interfaces.

36
synapse/storage/_base.py
View file

@ -17,14 +17,18 @@
import logging
import random
from abc import ABCMeta
from typing import Any, Optional
from typing import TYPE_CHECKING, Any, Iterable, Optional, Union
from synapse.storage.database import LoggingTransaction # noqa: F401
from synapse.storage.database import make_in_list_sql_clause # noqa: F401
from synapse.storage.database import DatabasePool
from synapse.types import Collection, get_domain_from_id
from synapse.storage.types import Connection
from synapse.types import Collection, StreamToken, get_domain_from_id
from synapse.util import json_decoder
if TYPE_CHECKING:
from synapse.app.homeserver import HomeServer
logger = logging.getLogger(__name__)
@ -36,24 +40,31 @@ class SQLBaseStore(metaclass=ABCMeta):
per data store (and not one per physical database).
"""
def __init__(self, database: DatabasePool, db_conn, hs):
def __init__(self, database: DatabasePool, db_conn: Connection, hs: "HomeServer"):
self.hs = hs
self._clock = hs.get_clock()
self.database_engine = database.engine
self.db_pool = database
self.rand = random.SystemRandom()
def process_replication_rows(self, stream_name, instance_name, token, rows):
def process_replication_rows(
self,
stream_name: str,
instance_name: str,
token: StreamToken,
rows: Iterable[Any],
) -> None:
pass
def _invalidate_state_caches(self, room_id, members_changed):
def _invalidate_state_caches(
self, room_id: str, members_changed: Iterable[str]
) -> None:
"""Invalidates caches that are based on the current state, but does
not stream invalidations down replication.
Args:
room_id (str): Room where state changed
members_changed (iterable[str]): The user_ids of members that have
changed
room_id: Room where state changed
members_changed: The user_ids of members that have changed
"""
for host in {get_domain_from_id(u) for u in members_changed}:
self._attempt_to_invalidate_cache("is_host_joined", (room_id, host))
@ -64,7 +75,7 @@ class SQLBaseStore(metaclass=ABCMeta):
def _attempt_to_invalidate_cache(
self, cache_name: str, key: Optional[Collection[Any]]
):
) -> None:
"""Attempts to invalidate the cache of the given name, ignoring if the
cache doesn't exist. Mainly used for invalidating caches on workers,
where they may not have the cache.
@ -88,12 +99,15 @@ class SQLBaseStore(metaclass=ABCMeta):
cache.invalidate(tuple(key))
def db_to_json(db_content):
def db_to_json(db_content: Union[memoryview, bytes, bytearray, str]) -> Any:
"""
Take some data from a database row and return a JSON-decoded object.
Args:
db_content (memoryview|buffer|bytes|bytearray|unicode)
db_content: The JSON-encoded contents from the database.
Returns:
The object decoded from JSON.
"""
# psycopg2 on Python 3 returns memoryview objects, which we need to
# cast to bytes to decode

111
synapse/storage/background_updates.py
View file

@ -12,29 +12,34 @@
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import logging
from typing import Optional
from typing import TYPE_CHECKING, Awaitable, Callable, Dict, Iterable, Optional
from synapse.metrics.background_process_metrics import run_as_background_process
from synapse.storage.types import Connection
from synapse.types import JsonDict
from synapse.util import json_encoder
from . import engines
if TYPE_CHECKING:
from synapse.app.homeserver import HomeServer
from synapse.storage.database import DatabasePool, LoggingTransaction
logger = logging.getLogger(__name__)
class BackgroundUpdatePerformance:
"""Tracks the how long a background update is taking to update its items"""
def __init__(self, name):
def __init__(self, name: str):
self.name = name
self.total_item_count = 0
self.total_duration_ms = 0
self.avg_item_count = 0
self.avg_duration_ms = 0
self.total_duration_ms = 0.0
self.avg_item_count = 0.0
self.avg_duration_ms = 0.0
def update(self, item_count, duration_ms):
def update(self, item_count: int, duration_ms: float) -> None:
"""Update the stats after doing an update"""
self.total_item_count += item_count
self.total_duration_ms += duration_ms
@ -44,7 +49,7 @@ class BackgroundUpdatePerformance:
self.avg_item_count += 0.1 * (item_count - self.avg_item_count)
self.avg_duration_ms += 0.1 * (duration_ms - self.avg_duration_ms)
def average_items_per_ms(self):
def average_items_per_ms(self) -> Optional[float]:
"""An estimate of how long it takes to do a single update.
Returns:
A duration in ms as a float
@ -58,7 +63,7 @@ class BackgroundUpdatePerformance:
# changes in how long the update process takes.
return float(self.avg_item_count) / float(self.avg_duration_ms)
def total_items_per_ms(self):
def total_items_per_ms(self) -> Optional[float]:
"""An estimate of how long it takes to do a single update.
Returns:
A duration in ms as a float
@ -83,21 +88,25 @@ class BackgroundUpdater:
BACKGROUND_UPDATE_INTERVAL_MS = 1000
BACKGROUND_UPDATE_DURATION_MS = 100
def __init__(self, hs, database):
def __init__(self, hs: "HomeServer", database: "DatabasePool"):
self._clock = hs.get_clock()
self.db_pool = database
# if a background update is currently running, its name.
self._current_background_update = None # type: Optional[str]
self._background_update_performance = {}
self._background_update_handlers = {}
self._background_update_performance = (
{}
) # type: Dict[str, BackgroundUpdatePerformance]
self._background_update_handlers = (
{}
) # type: Dict[str, Callable[[JsonDict, int], Awaitable[int]]]
self._all_done = False
def start_doing_background_updates(self):
def start_doing_background_updates(self) -> None:
run_as_background_process("background_updates", self.run_background_updates)
async def run_background_updates(self, sleep=True):
async def run_background_updates(self, sleep: bool = True) -> None:
logger.info("Starting background schema updates")
while True:
if sleep:
@ -148,7 +157,7 @@ class BackgroundUpdater:
return False
async def has_completed_background_update(self, update_name) -> bool:
async def has_completed_background_update(self, update_name: str) -> bool:
"""Check if the given background update has finished running.
"""
if self._all_done:
@ -173,8 +182,7 @@ class BackgroundUpdater:
Returns once some amount of work is done.
Args:
desired_duration_ms(float): How long we want to spend
updating.
desired_duration_ms: How long we want to spend updating.
Returns:
True if we have finished running all the background updates, otherwise False
"""
@ -220,6 +228,7 @@ class BackgroundUpdater:
return False
async def _do_background_update(self, desired_duration_ms: float) -> int:
assert self._current_background_update is not None
update_name = self._current_background_update
logger.info("Starting update batch on background update '%s'", update_name)
@ -273,7 +282,11 @@ class BackgroundUpdater:
return len(self._background_update_performance)
def register_background_update_handler(self, update_name, update_handler):
def register_background_update_handler(
self,
update_name: str,
update_handler: Callable[[JsonDict, int], Awaitable[int]],
):
"""Register a handler for doing a background update.
The handler should take two arguments:
@ -287,12 +300,12 @@ class BackgroundUpdater:
The handler is responsible for updating the progress of the update.
Args:
update_name(str): The name of the update that this code handles.
update_handler(function): The function that does the update.
update_name: The name of the update that this code handles.
update_handler: The function that does the update.
"""
self._background_update_handlers[update_name] = update_handler
def register_noop_background_update(self, update_name):
def register_noop_background_update(self, update_name: str) -> None:
"""Register a noop handler for a background update.
This is useful when we previously did a background update, but no
@ -302,10 +315,10 @@ class BackgroundUpdater:
also be called to clear the update.
Args:
update_name (str): Name of update
update_name: Name of update
"""
async def noop_update(progress, batch_size):
async def noop_update(progress: JsonDict, batch_size: int) -> int:
await self._end_background_update(update_name)
return 1
@ -313,14 +326,14 @@ class BackgroundUpdater:
def register_background_index_update(
self,
update_name,
index_name,
table,
columns,
where_clause=None,
unique=False,
psql_only=False,
):
update_name: str,
index_name: str,
table: str,
columns: Iterable[str],
where_clause: Optional[str] = None,
unique: bool = False,
psql_only: bool = False,
) -> None:
"""Helper for store classes to do a background index addition
To use:
@ -332,19 +345,19 @@ class BackgroundUpdater:
2. In the Store constructor, call this method
Args:
update_name (str): update_name to register for
index_name (str): name of index to add
table (str): table to add index to
columns (list[str]): columns/expressions to include in index
unique (bool): true to make a UNIQUE index
update_name: update_name to register for
index_name: name of index to add
table: table to add index to
columns: columns/expressions to include in index
unique: true to make a UNIQUE index
psql_only: true to only create this index on psql databases (useful
for virtual sqlite tables)
"""
def create_index_psql(conn):
def create_index_psql(conn: Connection) -> None:
conn.rollback()
# postgres insists on autocommit for the index
conn.set_session(autocommit=True)
conn.set_session(autocommit=True) # type: ignore
try:
c = conn.cursor()
@ -371,9 +384,9 @@ class BackgroundUpdater:
logger.debug("[SQL] %s", sql)
c.execute(sql)
finally:
conn.set_session(autocommit=False)
conn.set_session(autocommit=False) # type: ignore
def create_index_sqlite(conn):
def create_index_sqlite(conn: Connection) -> None:
# Sqlite doesn't support concurrent creation of indexes.
#
# We don't use partial indices on SQLite as it wasn't introduced
@ -399,7 +412,7 @@ class BackgroundUpdater:
c.execute(sql)
if isinstance(self.db_pool.engine, engines.PostgresEngine):
runner = create_index_psql
runner = create_index_psql # type: Optional[Callable[[Connection], None]]
elif psql_only:
runner = None
else:
@ -433,7 +446,9 @@ class BackgroundUpdater:
"background_updates", keyvalues={"update_name": update_name}
)
async def _background_update_progress(self, update_name: str, progress: dict):
async def _background_update_progress(
self, update_name: str, progress: dict
) -> None:
"""Update the progress of a background update
Args:
@ -441,20 +456,22 @@ class BackgroundUpdater:
progress: The progress of the update.
"""
return await self.db_pool.runInteraction(
await self.db_pool.runInteraction(
"background_update_progress",
self._background_update_progress_txn,
update_name,
progress,
)
def _background_update_progress_txn(self, txn, update_name, progress):
def _background_update_progress_txn(
self, txn: "LoggingTransaction", update_name: str, progress: JsonDict
) -> None:
"""Update the progress of a background update
Args:
txn(cursor): The transaction.
update_name(str): The name of the background update task
progress(dict): The progress of the update.
txn: The transaction.
update_name: The name of the background update task
progress: The progress of the update.
"""
progress_json = json_encoder.encode(progress)

5
synapse/storage/keys.py
View file

@ -17,11 +17,12 @@
import logging
import attr
from signedjson.types import VerifyKey
logger = logging.getLogger(__name__)
@attr.s(slots=True, frozen=True)
class FetchKeyResult:
verify_key = attr.ib() # VerifyKey: the key itself
valid_until_ts = attr.ib() # int: how long we can use this key for
verify_key = attr.ib(type=VerifyKey) # the key itself
valid_until_ts = attr.ib(type=int) # how long we can use this key for

104
synapse/storage/prepare_database.py
View file

@ -18,9 +18,10 @@ import logging
import os
import re
from collections import Counter
from typing import Optional, TextIO
from typing import Generator, Iterable, List, Optional, TextIO, Tuple
import attr
from typing_extensions import Counter as CounterType
from synapse.config.homeserver import HomeServerConfig
from synapse.storage.database import LoggingDatabaseConnection
@ -70,7 +71,7 @@ def prepare_database(
db_conn: LoggingDatabaseConnection,
database_engine: BaseDatabaseEngine,
config: Optional[HomeServerConfig],
databases: Collection[str] = ["main", "state"],
databases: Collection[str] = ("main", "state"),
):
"""Prepares a physical database for usage. Will either create all necessary tables
or upgrade from an older schema version.
@ -155,7 +156,9 @@ def prepare_database(
raise
def _setup_new_database(cur, database_engine, databases):
def _setup_new_database(
cur: Cursor, database_engine: BaseDatabaseEngine, databases: Collection[str]
) -> None:
"""Sets up the physical database by finding a base set of "full schemas" and
then applying any necessary deltas, including schemas from the given data
stores.
@ -188,10 +191,9 @@ def _setup_new_database(cur, database_engine, databases):
folder as well those in the data stores specified.
Args:
cur (Cursor): a database cursor
database_engine (DatabaseEngine)
databases (list[str]): The names of the databases to instantiate
on the given physical database.
cur: a database cursor
database_engine
databases: The names of the databases to instantiate on the given physical database.
"""
# We're about to set up a brand new database so we check that its
@ -199,12 +201,11 @@ def _setup_new_database(cur, database_engine, databases):
database_engine.check_new_database(cur)
current_dir = os.path.join(dir_path, "schema", "full_schemas")
directory_entries = os.listdir(current_dir)
# First we find the highest full schema version we have
valid_versions = []
for filename in directory_entries:
for filename in os.listdir(current_dir):
try:
ver = int(filename)
except ValueError:
@ -237,7 +238,7 @@ def _setup_new_database(cur, database_engine, databases):
for database in databases
)
directory_entries = []
directory_entries = [] # type: List[_DirectoryListing]
for directory in directories:
directory_entries.extend(
_DirectoryListing(file_name, os.path.join(directory, file_name))
@ -275,15 +276,15 @@ def _setup_new_database(cur, database_engine, databases):
def _upgrade_existing_database(
cur,
current_version,
applied_delta_files,
upgraded,
database_engine,
config,
databases,
is_empty=False,
):
cur: Cursor,
current_version: int,
applied_delta_files: List[str],
upgraded: bool,
database_engine: BaseDatabaseEngine,
config: Optional[HomeServerConfig],
databases: Collection[str],
is_empty: bool = False,
) -> None:
"""Upgrades an existing physical database.
Delta files can either be SQL stored in *.sql files, or python modules
@ -323,21 +324,20 @@ def _upgrade_existing_database(
for a version before applying those in the next version.
Args:
cur (Cursor)
current_version (int): The current version of the schema.
applied_delta_files (list): A list of deltas that have already been
applied.
upgraded (bool): Whether the current version was generated by having
cur
current_version: The current version of the schema.
applied_delta_files: A list of deltas that have already been applied.
upgraded: Whether the current version was generated by having
applied deltas or from full schema file. If `True` the function
will never apply delta files for the given `current_version`, since
the current_version wasn't generated by applying those delta files.
database_engine (DatabaseEngine)
config (synapse.config.homeserver.HomeServerConfig|None):
database_engine
config:
None if we are initialising a blank database, otherwise the application
config
databases (list[str]): The names of the databases to instantiate
databases: The names of the databases to instantiate
on the given physical database.
is_empty (bool): Is this a blank database? I.e. do we need to run the
is_empty: Is this a blank database? I.e. do we need to run the
upgrade portions of the delta scripts.
"""
if is_empty:
@ -358,6 +358,7 @@ def _upgrade_existing_database(
if not is_empty and "main" in databases:
from synapse.storage.databases.main import check_database_before_upgrade
assert config is not None
check_database_before_upgrade(cur, database_engine, config)
start_ver = current_version
@ -388,10 +389,10 @@ def _upgrade_existing_database(
)
# Used to check if we have any duplicate file names
file_name_counter = Counter()
file_name_counter = Counter() # type: CounterType[str]
# Now find which directories have anything of interest.
directory_entries = []
directory_entries = [] # type: List[_DirectoryListing]
for directory in directories:
logger.debug("Looking for schema deltas in %s", directory)
try:
@ -445,11 +446,11 @@ def _upgrade_existing_database(
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)
module = imp.load_source(module_name, absolute_path, python_file) # type: ignore
logger.info("Running script %s", relative_path)
module.run_create(cur, database_engine)
module.run_create(cur, database_engine) # type: ignore
if not is_empty:
module.run_upgrade(cur, database_engine, config=config)
module.run_upgrade(cur, database_engine, config=config) # type: ignore
elif ext == ".pyc" or file_name == "__pycache__":
# Sometimes .pyc files turn up anyway even though we've
# disabled their generation; e.g. from distribution package
@ -497,14 +498,15 @@ def _upgrade_existing_database(
logger.info("Schema now up to date")
def _apply_module_schemas(txn, database_engine, config):
def _apply_module_schemas(
txn: Cursor, database_engine: BaseDatabaseEngine, config: HomeServerConfig
) -> None:
"""Apply the module schemas for the dynamic modules, if any
Args:
cur: database cursor
database_engine: synapse database engine class
config (synapse.config.homeserver.HomeServerConfig):
application config
database_engine:
config: application config
"""
for (mod, _config) in config.password_providers:
if not hasattr(mod, "get_db_schema_files"):
@ -515,15 +517,19 @@ def _apply_module_schemas(txn, database_engine, config):
)
def _apply_module_schema_files(cur, database_engine, modname, names_and_streams):
def _apply_module_schema_files(
cur: Cursor,
database_engine: BaseDatabaseEngine,
modname: str,
names_and_streams: Iterable[Tuple[str, TextIO]],
) -> None:
"""Apply the module schemas for a single module
Args:
cur: database cursor
database_engine: synapse database engine class
modname (str): fully qualified name of the module
names_and_streams (Iterable[(str, file)]): the names and streams of
schemas to be applied
modname: fully qualified name of the module
names_and_streams: the names and streams of schemas to be applied
"""
cur.execute(
"SELECT file FROM applied_module_schemas WHERE module_name = ?", (modname,),
@ -549,7 +555,7 @@ def _apply_module_schema_files(cur, database_engine, modname, names_and_streams)
)
def get_statements(f):
def get_statements(f: Iterable[str]) -> Generator[str, None, None]:
statement_buffer = ""
in_comment = False # If we're in a /* ... */ style comment
@ -594,17 +600,19 @@ def get_statements(f):
statement_buffer = statements[-1].strip()
def executescript(txn, schema_path):
def executescript(txn: Cursor, schema_path: str) -> None:
with open(schema_path, "r") as f:
execute_statements_from_stream(txn, f)
def execute_statements_from_stream(cur: Cursor, f: TextIO):
def execute_statements_from_stream(cur: Cursor, f: TextIO) -> None:
for statement in get_statements(f):
cur.execute(statement)
def _get_or_create_schema_state(txn, database_engine):
def _get_or_create_schema_state(
txn: Cursor, database_engine: BaseDatabaseEngine
) -> Optional[Tuple[int, List[str], bool]]:
# Bluntly try creating the schema_version tables.
schema_path = os.path.join(dir_path, "schema", "schema_version.sql")
executescript(txn, schema_path)
@ -612,7 +620,6 @@ def _get_or_create_schema_state(txn, database_engine):
txn.execute("SELECT version, upgraded FROM schema_version")
row = txn.fetchone()
current_version = int(row[0]) if row else None
upgraded = bool(row[1]) if row else None
if current_version:
txn.execute(
@ -620,6 +627,7 @@ def _get_or_create_schema_state(txn, database_engine):
(current_version,),
)
applied_deltas = [d for d, in txn]
upgraded = bool(row[1])
return current_version, applied_deltas, upgraded
return None
@ -634,5 +642,5 @@ class _DirectoryListing:
`file_name` attr is kept first.
"""
file_name = attr.ib()
absolute_path = attr.ib()
file_name = attr.ib(type=str)
absolute_path = attr.ib(type=str)

11
synapse/storage/purge_events.py
View file

@ -15,7 +15,12 @@
import itertools
import logging
from typing import Set
from typing import TYPE_CHECKING, Set
from synapse.storage.databases import Databases
if TYPE_CHECKING:
from synapse.app.homeserver import HomeServer
logger = logging.getLogger(__name__)
@ -24,10 +29,10 @@ class PurgeEventsStorage:
"""High level interface for purging rooms and event history.
"""
def __init__(self, hs, stores):
def __init__(self, hs: "HomeServer", stores: Databases):
self.stores = stores
async def purge_room(self, room_id: str):
async def purge_room(self, room_id: str) -> None:
"""Deletes all record of a room
"""

44
synapse/storage/relations.py
View file

@ -14,10 +14,12 @@
# limitations under the License.
import logging
from typing import Any, Dict, List, Optional, Tuple
import attr
from synapse.api.errors import SynapseError
from synapse.types import JsonDict
logger = logging.getLogger(__name__)
@ -27,18 +29,18 @@ class PaginationChunk:
"""Returned by relation pagination APIs.
Attributes:
chunk (list): The rows returned by pagination
next_batch (Any|None): Token to fetch next set of results with, if
chunk: The rows returned by pagination
next_batch: Token to fetch next set of results with, if
None then there are no more results.
prev_batch (Any|None): Token to fetch previous set of results with, if
prev_batch: Token to fetch previous set of results with, if
None then there are no previous results.
"""
chunk = attr.ib()
next_batch = attr.ib(default=None)
prev_batch = attr.ib(default=None)
chunk = attr.ib(type=List[JsonDict])
next_batch = attr.ib(type=Optional[Any], default=None)
prev_batch = attr.ib(type=Optional[Any], default=None)
def to_dict(self):
def to_dict(self) -> Dict[str, Any]:
d = {"chunk": self.chunk}
if self.next_batch:
@ -59,25 +61,25 @@ class RelationPaginationToken:
boundaries of the chunk as pagination tokens.
Attributes:
topological (int): The topological ordering of the boundary event
stream (int): The stream ordering of the boundary event.
topological: The topological ordering of the boundary event
stream: The stream ordering of the boundary event.
"""
topological = attr.ib()
stream = attr.ib()
topological = attr.ib(type=int)
stream = attr.ib(type=int)
@staticmethod
def from_string(string):
def from_string(string: str) -> "RelationPaginationToken":
try:
t, s = string.split("-")
return RelationPaginationToken(int(t), int(s))
except ValueError:
raise SynapseError(400, "Invalid token")
def to_string(self):
def to_string(self) -> str:
return "%d-%d" % (self.topological, self.stream)
def as_tuple(self):
def as_tuple(self) -> Tuple[Any, ...]:
return attr.astuple(self)
@ -89,23 +91,23 @@ class AggregationPaginationToken:
aggregation groups, we can just use them as our pagination token.
Attributes:
count (int): The count of relations in the boundar group.
stream (int): The MAX stream ordering in the boundary group.
count: The count of relations in the boundary group.
stream: The MAX stream ordering in the boundary group.
"""
count = attr.ib()
stream = attr.ib()
count = attr.ib(type=int)
stream = attr.ib(type=int)
@staticmethod
def from_string(string):
def from_string(string: str) -> "AggregationPaginationToken":
try:
c, s = string.split("-")
return AggregationPaginationToken(int(c), int(s))
except ValueError:
raise SynapseError(400, "Invalid token")
def to_string(self):
def to_string(self) -> str:
return "%d-%d" % (self.count, self.stream)
def as_tuple(self):
def as_tuple(self) -> Tuple[Any, ...]:
return attr.astuple(self)

35
synapse/storage/state.py
View file

@ -12,9 +12,18 @@
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import logging
from typing import Awaitable, Dict, Iterable, List, Optional, Set, Tuple, TypeVar
from typing import (
TYPE_CHECKING,
Awaitable,
Dict,
Iterable,
List,
Optional,
Set,
Tuple,
TypeVar,
)
import attr
@ -22,6 +31,10 @@ from synapse.api.constants import EventTypes
from synapse.events import EventBase
from synapse.types import MutableStateMap, StateMap
if TYPE_CHECKING:
from synapse.app.homeserver import HomeServer
from synapse.storage.databases import Databases
logger = logging.getLogger(__name__)
# Used for generic functions below
@ -330,10 +343,12 @@ class StateGroupStorage:
"""High level interface to fetching state for event.
"""
def __init__(self, hs, stores):
def __init__(self, hs: "HomeServer", stores: "Databases"):
self.stores = stores
async def get_state_group_delta(self, state_group: int):
async def get_state_group_delta(
self, state_group: int
) -> Tuple[Optional[int], Optional[StateMap[str]]]:
"""Given a state group try to return a previous group and a delta between
the old and the new.
@ -341,8 +356,8 @@ class StateGroupStorage:
state_group: The state group used to retrieve state deltas.
Returns:
Tuple[Optional[int], Optional[StateMap[str]]]:
(prev_group, delta_ids)
A tuple of the previous group and a state map of the event IDs which
make up the delta between the old and new state groups.
"""
return await self.stores.state.get_state_group_delta(state_group)
@ -436,7 +451,7 @@ class StateGroupStorage:
async def get_state_for_events(
self, event_ids: List[str], state_filter: StateFilter = StateFilter.all()
):
) -> Dict[str, StateMap[EventBase]]:
"""Given a list of event_ids and type tuples, return a list of state
dicts for each event.
@ -472,7 +487,7 @@ class StateGroupStorage:
async def get_state_ids_for_events(
self, event_ids: List[str], state_filter: StateFilter = StateFilter.all()
):
) -> Dict[str, StateMap[str]]:
"""
Get the state dicts corresponding to a list of events, containing the event_ids
of the state events (as opposed to the events themselves)
@ -500,7 +515,7 @@ class StateGroupStorage:
async def get_state_for_event(
self, event_id: str, state_filter: StateFilter = StateFilter.all()
):
) -> StateMap[EventBase]:
"""
Get the state dict corresponding to a particular event
@ -516,7 +531,7 @@ class StateGroupStorage:
async def get_state_ids_for_event(
self, event_id: str, state_filter: StateFilter = StateFilter.all()
):
) -> StateMap[str]:
"""
Get the state dict corresponding to a particular event