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add a write-through cache on the retry schedule
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9c43b258ec
commit
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@ -26,6 +26,9 @@ class TransactionStore(SQLBaseStore):
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"""A collection of queries for handling PDUs.
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"""A collection of queries for handling PDUs.
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"""
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"""
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# a write-through cache of DestinationsTable.EntryType indexed by destination string
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destination_retry_cache = {}
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def get_received_txn_response(self, transaction_id, origin):
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def get_received_txn_response(self, transaction_id, origin):
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"""For an incoming transaction from a given origin, check if we have
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"""For an incoming transaction from a given origin, check if we have
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already responded to it. If so, return the response code and response
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already responded to it. If so, return the response code and response
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@ -213,10 +216,11 @@ class TransactionStore(SQLBaseStore):
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Returns:
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Returns:
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None if not retrying
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None if not retrying
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tuple: (retry_last_ts, retry_interval)
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Otherwise a DestinationsTable.EntryType for the retry scheme
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retry_ts: time of last retry attempt in unix epoch ms
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retry_interval: how long until next retry in ms
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"""
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"""
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if self.destination_retry_cache[destination]:
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return self.destination_retry_cache[destination]
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return self.runInteraction(
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return self.runInteraction(
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"get_destination_retry_timings",
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"get_destination_retry_timings",
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self._get_destination_retry_timings, destination)
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self._get_destination_retry_timings, destination)
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@ -225,7 +229,7 @@ class TransactionStore(SQLBaseStore):
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query = DestinationsTable.select_statement("destination = ?")
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query = DestinationsTable.select_statement("destination = ?")
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txn.execute(query, (destination,))
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txn.execute(query, (destination,))
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result = DestinationsTable.decode_single_result(txn.fetchone())
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result = DestinationsTable.decode_single_result(txn.fetchone())
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if result and result[0] > 0:
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if result and result.retry_last_ts > 0:
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return result
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return result
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else:
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else:
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return None
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return None
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@ -239,6 +243,12 @@ class TransactionStore(SQLBaseStore):
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retry_last_ts (int) - time of last retry attempt in unix epoch ms
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retry_last_ts (int) - time of last retry attempt in unix epoch ms
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retry_interval (int) - how long until next retry in ms
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retry_interval (int) - how long until next retry in ms
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"""
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"""
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self.destination_retry_cache[destination] = (
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DestinationsTable.EntryType(destination, retry_last_ts, retry_interval)
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)
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# xxx: we could chose to not bother persisting this if our cache things this is a NOOP
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return self.runInteraction(
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return self.runInteraction(
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"set_destination_retry_timings",
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"set_destination_retry_timings",
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self._set_destination_retry_timings, destination, retry_last_ts, retry_interval)
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self._set_destination_retry_timings, destination, retry_last_ts, retry_interval)
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@ -260,6 +270,7 @@ class TransactionStore(SQLBaseStore):
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Returns:
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Returns:
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list: A list of `DestinationsTable.EntryType`
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list: A list of `DestinationsTable.EntryType`
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"""
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"""
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return self.runInteraction(
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return self.runInteraction(
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"get_destinations_needing_retry",
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"get_destinations_needing_retry",
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self._get_destinations_needing_retry
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self._get_destinations_needing_retry
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