smp server: faster export (#1626)

* smp server: faster export

* flush

* export messages with PostgreSQL database

* remove flush

* batch message writes

* Revert "batch message writes"

This reverts commit 61fb3c3b9e.

* remove $!

* fast journal export

* another approach

* Revert "smp server: remove dependency of message size on the version (#1627)"

This reverts commit 8fea15245a.

* style

* faster?

* cleanup

* cleanup

* refactor

* refactor

* concurrent read messages

* Revert "concurrent read messages"

This reverts commit 05a32e6491.

* concurrent read/write

* parameter to export to/import from another message log file

* Revert "parameter to export to/import from another message log file"

This reverts commit 4e88b035c4.

* Revert "concurrent read/write"

This reverts commit a8eab1f7e3.

src/Simplex/Messaging/Server/MsgStore/STM.hs

@@ -82,7 +82,7 @@ instance MsgStoreClass STMMsgStore where
   {-# INLINE closeMsgStore #-}
   withActiveMsgQueues = withLoadedQueues . queueStore_
   {-# INLINE withActiveMsgQueues #-}
-  unsafeWithAllMsgQueues _ _ = withLoadedQueues . queueStore_
+  unsafeWithAllMsgQueues _ = withLoadedQueues . queueStore_
   {-# INLINE unsafeWithAllMsgQueues #-}
 
   expireOldMessages :: Bool -> STMMsgStore -> Int64 -> Int64 -> IO MessageStats