diff options
| -rw-r--r-- | synapse/storage/data_stores/state/store.py | 12 | ||||
| -rw-r--r-- | synapse/storage/engines/_base.py | 6 | ||||
| -rw-r--r-- | synapse/storage/engines/postgres.py | 6 | ||||
| -rw-r--r-- | synapse/storage/engines/sqlite.py | 13 |
4 files changed, 11 insertions, 26 deletions
diff --git a/synapse/storage/data_stores/state/store.py b/synapse/storage/data_stores/state/store.py index 5db9f20135..128c09a2cf 100644 --- a/synapse/storage/data_stores/state/store.py +++ b/synapse/storage/data_stores/state/store.py @@ -24,6 +24,8 @@ from synapse.storage._base import SQLBaseStore from synapse.storage.data_stores.state.bg_updates import StateBackgroundUpdateStore from synapse.storage.database import Database from synapse.storage.state import StateFilter +from synapse.storage.types import Cursor +from synapse.storage.util.sequence import build_sequence_generator from synapse.types import StateMap from synapse.util.caches.descriptors import cached from synapse.util.caches.dictionary_cache import DictionaryCache @@ -92,6 +94,14 @@ class StateGroupDataStore(StateBackgroundUpdateStore, SQLBaseStore): "*stateGroupMembersCache*", 500000, ) + def get_max_state_group_txn(txn: Cursor): + txn.execute("SELECT COALESCE(max(id), 0) FROM state_groups") + return txn.fetchone()[0] + + self._state_group_seq_gen = build_sequence_generator( + self.database_engine, get_max_state_group_txn, "state_group_id_seq" + ) + @cached(max_entries=10000, iterable=True) def get_state_group_delta(self, state_group): """Given a state group try to return a previous group and a delta between @@ -386,7 +396,7 @@ class StateGroupDataStore(StateBackgroundUpdateStore, SQLBaseStore): # AFAIK, this can never happen raise Exception("current_state_ids cannot be None") - state_group = self.database_engine.get_next_state_group_id(txn) + state_group = self._state_group_seq_gen.get_next_id_txn(txn) self.db.simple_insert_txn( txn, diff --git a/synapse/storage/engines/_base.py b/synapse/storage/engines/_base.py index ab0bbe4bd3..908cbc79e3 100644 --- a/synapse/storage/engines/_base.py +++ b/synapse/storage/engines/_base.py @@ -91,12 +91,6 @@ class BaseDatabaseEngine(Generic[ConnectionType], metaclass=abc.ABCMeta): def lock_table(self, txn, table: str) -> None: ... - @abc.abstractmethod - def get_next_state_group_id(self, txn) -> int: - """Returns an int that can be used as a new state_group ID - """ - ... - @property @abc.abstractmethod def server_version(self) -> str: diff --git a/synapse/storage/engines/postgres.py b/synapse/storage/engines/postgres.py index a31588080d..ff39281f85 100644 --- a/synapse/storage/engines/postgres.py +++ b/synapse/storage/engines/postgres.py @@ -154,12 +154,6 @@ class PostgresEngine(BaseDatabaseEngine): def lock_table(self, txn, table): txn.execute("LOCK TABLE %s in EXCLUSIVE MODE" % (table,)) - def get_next_state_group_id(self, txn): - """Returns an int that can be used as a new state_group ID - """ - txn.execute("SELECT nextval('state_group_id_seq')") - return txn.fetchone()[0] - @property def server_version(self): """Returns a string giving the server version. For example: '8.1.5' diff --git a/synapse/storage/engines/sqlite.py b/synapse/storage/engines/sqlite.py index 215a949442..8a0f8c89d1 100644 --- a/synapse/storage/engines/sqlite.py +++ b/synapse/storage/engines/sqlite.py @@ -96,19 +96,6 @@ class Sqlite3Engine(BaseDatabaseEngine["sqlite3.Connection"]): def lock_table(self, txn, table): return - def get_next_state_group_id(self, txn): - """Returns an int that can be used as a new state_group ID - """ - # We do application locking here since if we're using sqlite then - # we are a single process synapse. - with self._current_state_group_id_lock: - if self._current_state_group_id is None: - txn.execute("SELECT COALESCE(max(id), 0) FROM state_groups") - self._current_state_group_id = txn.fetchone()[0] - - self._current_state_group_id += 1 - return self._current_state_group_id - @property def server_version(self): """Gets a string giving the server version. For example: '3.22.0' |