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Use the @cached decorator to implement the destination_retry_timings cache

This commit is contained in:
Paul "LeoNerd" Evans 2015-02-23 16:04:40 +00:00
parent 357fba2c24
commit 044d813ef7
1 changed files with 5 additions and 9 deletions
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14
synapse/storage/transactions.py
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@ -13,7 +13,7 @@
# See the License for the specific language governing permissions and # See the License for the specific language governing permissions and
# limitations under the License. # limitations under the License.
from ._base import SQLBaseStore, Table from ._base import SQLBaseStore, Table, cached
from collections import namedtuple from collections import namedtuple
@ -28,10 +28,6 @@ class TransactionStore(SQLBaseStore):
"""A collection of queries for handling PDUs. """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): def get_received_txn_response(self, transaction_id, origin):
"""For an incoming transaction from a given origin, check if we have """For an incoming transaction from a given origin, check if we have
already responded to it. If so, return the response code and response 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()) return ReceivedTransactionsTable.decode_results(txn.fetchall())
@cached()
def get_destination_retry_timings(self, destination): def get_destination_retry_timings(self, destination):
"""Gets the current retry timings (if any) for a given destination. """Gets the current retry timings (if any) for a given destination.
@ -221,9 +218,6 @@ class TransactionStore(SQLBaseStore):
None if not retrying None if not retrying
Otherwise a DestinationsTable.EntryType for the retry scheme 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( return self.runInteraction(
"get_destination_retry_timings", "get_destination_retry_timings",
self._get_destination_retry_timings, destination) self._get_destination_retry_timings, destination)
@ -250,7 +244,9 @@ class TransactionStore(SQLBaseStore):
retry_interval (int) - how long until next retry in ms 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( DestinationsTable.EntryType(
destination, destination,
retry_last_ts, retry_last_ts,