Delete old received_transactions

1 files changed, 13 insertions, 4 deletions

diff --git a/synapse/storage/transactions.py b/synapse/storage/transactions.py
index 6258ff1725..58d4de4f1d 100644
--- a/synapse/storage/transactions.py
+++ b/synapse/storage/transactions.py
@@ -62,10 +62,9 @@ class TransactionStore(SQLBaseStore):
         self.last_transaction = {}
 
         reactor.addSystemEventTrigger("before", "shutdown", self._persist_in_mem_txns)
-        hs.get_clock().looping_call(
-            self._persist_in_mem_txns,
-            1000,
-        )
+        self._clock.looping_call(self._persist_in_mem_txns, 1000)
+
+        self._clock.looping_call(self._cleanup_transactions, 30 * 60 * 1000)
 
     def get_received_txn_response(self, transaction_id, origin):
         """For an incoming transaction from a given origin, check if we have
@@ -127,6 +126,7 @@ class TransactionStore(SQLBaseStore):
                 "origin": origin,
                 "response_code": code,
                 "response_json": buffer(encode_canonical_json(response_dict)),
+                "ts": self._clock.time_msec(),
             },
             or_ignore=True,
             desc="set_received_txn_response",
@@ -383,3 +383,12 @@ class TransactionStore(SQLBaseStore):
                 yield self.runInteraction("_persist_in_mem_txns", f)
         except:
             logger.exception("Failed to persist transactions!")
+
+    def _cleanup_transactions(self):
+        now = self._clock.time_msec()
+        month_ago = now - 30 * 24 * 60 * 60 * 1000
+
+        def _cleanup_transactions_txn(txn):
+            txn.execute("DELETE FROM received_transactions WHERE ts < ?", (month_ago,))
+
+        return self.runInteraction("_persist_in_mem_txns", _cleanup_transactions_txn)