catbref 918a331609 Transaction.importAsUnconfirmed() now BLOCKS for blockchain lock, instead of non-blocking try()
This is a serious change as it affects many callers.

Controller.onNetworkTransactionMessager()
-- should be OK to block as it's only one EPC thread

TransactionsResource.processTransaction()
-- should be OK to block as it's only one Jetty thread
AND has its own 30s timeout wrapper anyway

Implementations of AcctTradeBot.progress()
e.g. BitcoinACCTv1TradeBot.progress() & LitecoinACCTv1TradeBot.progress()
TradeBot.updatePresence()
-- these are called via BlockMinter/Synchronizer
when blockchain lock is already held, so will are unaffected

AcctTradeBot.createTrade() and AcctTradeBot.startResponse()
-- these are called via API
and previously would only perform non-blocking blockchainLock.try()
but now perform blocking blockchainLock.lock()
thus preventing NO_BLOCKCHAIN_LOCK when creating/responding to trades
especially after a (wasted) MESSAGE PoW compute
but with potential downside that API response might be delayed
e.g. by a very slow sync round

Future work could look into removing the need for blockchain lock
when calling Transaction.importAsUnconfirmed().
2020-12-30 12:43:41 +00:00
..