From 044d813ef7bb67e7b680087d82f931e4c780218f Mon Sep 17 00:00:00 2001 From: "Paul \"LeoNerd\" Evans" Date: Mon, 23 Feb 2015 16:04:40 +0000 Subject: [PATCH] Use the @cached decorator to implement the destination_retry_timings cache --- synapse/storage/transactions.py | 14 +++++--------- 1 file changed, 5 insertions(+), 9 deletions(-) diff --git a/synapse/storage/transactions.py b/synapse/storage/transactions.py index e06ef3569..6cac8d01a 100644 --- a/synapse/storage/transactions.py +++ b/synapse/storage/transactions.py @@ -13,7 +13,7 @@ # See the License for the specific language governing permissions and # limitations under the License. -from ._base import SQLBaseStore, Table +from ._base import SQLBaseStore, Table, cached from collections import namedtuple @@ -28,10 +28,6 @@ class TransactionStore(SQLBaseStore): """A collection of queries for handling PDUs. """ - # a write-through cache of DestinationsTable.EntryType indexed by - # destination string - destination_retry_cache = {} - def get_received_txn_response(self, transaction_id, origin): """For an incoming transaction from a given origin, check if we have already responded to it. If so, return the response code and response @@ -211,6 +207,7 @@ class TransactionStore(SQLBaseStore): return ReceivedTransactionsTable.decode_results(txn.fetchall()) + @cached() def get_destination_retry_timings(self, destination): """Gets the current retry timings (if any) for a given destination. @@ -221,9 +218,6 @@ class TransactionStore(SQLBaseStore): None if not retrying Otherwise a DestinationsTable.EntryType for the retry scheme """ - if destination in self.destination_retry_cache: - return defer.succeed(self.destination_retry_cache[destination]) - return self.runInteraction( "get_destination_retry_timings", self._get_destination_retry_timings, destination) @@ -250,7 +244,9 @@ class TransactionStore(SQLBaseStore): retry_interval (int) - how long until next retry in ms """ - self.destination_retry_cache[destination] = ( + # As this is the new value, we might as well prefill the cache + self.get_destination_retry_timings.prefill( + destination, DestinationsTable.EntryType( destination, retry_last_ts,