mirror of
https://github.com/simplex-chat/simplexmq.git
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Evgeny
f3408d9bb6
* explicit exports * more empty exports * add exports * reorder * use correct ControlProtocol type for xftp router --------- Co-authored-by: Evgeny @ SimpleX Chat <259188159+evgeny-simplex@users.noreply.github.com>
75 lines
2.6 KiB
Haskell
75 lines
2.6 KiB
Haskell
{-# LANGUAGE BangPatterns #-}
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{-# LANGUAGE LambdaCase #-}
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{-# LANGUAGE NamedFieldPuns #-}
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{-# LANGUAGE OverloadedStrings #-}
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module Simplex.Messaging.Server.NtfStore
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( NtfStore (..),
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MsgNtf (..),
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NtfLogRecord (..),
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storeNtf,
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deleteNtfs,
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deleteExpiredNtfs,
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) where
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import Control.Concurrent.STM
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import Control.Monad (foldM)
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import Data.Int (Int64)
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import qualified Data.Map.Strict as M
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import Data.Time.Clock.System (SystemTime (..))
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import qualified Simplex.Messaging.Crypto as C
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import Simplex.Messaging.Encoding.String
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import Simplex.Messaging.Protocol (EncNMsgMeta, MsgId, NotifierId)
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import Simplex.Messaging.TMap (TMap)
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import qualified Simplex.Messaging.TMap as TM
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newtype NtfStore = NtfStore (TMap NotifierId (TVar [MsgNtf]))
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data MsgNtf = MsgNtf
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{ ntfMsgId :: MsgId,
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ntfTs :: SystemTime,
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ntfNonce :: C.CbNonce,
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ntfEncMeta :: EncNMsgMeta
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}
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storeNtf :: NtfStore -> NotifierId -> MsgNtf -> IO ()
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storeNtf (NtfStore ns) nId ntf = do
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TM.lookupIO nId ns >>= atomically . maybe newNtfs (`modifyTVar'` (ntf :))
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-- TODO [ntfdb] coalesce messages here once the client is updated to process multiple messages
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-- for single notification.
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-- when (isJust prevNtf) $ incStat $ msgNtfReplaced stats
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where
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newNtfs = TM.lookup nId ns >>= maybe (TM.insertM nId (newTVar [ntf]) ns) (`modifyTVar'` (ntf :))
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deleteNtfs :: NtfStore -> NotifierId -> IO Int
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deleteNtfs (NtfStore ns) nId = atomically (TM.lookupDelete nId ns) >>= maybe (pure 0) (fmap length . readTVarIO)
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deleteExpiredNtfs :: NtfStore -> Int64 -> IO Int
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deleteExpiredNtfs (NtfStore ns) old =
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foldM (\expired -> fmap (expired +) . expireQueue) 0 . M.keys =<< readTVarIO ns
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where
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expireQueue nId = TM.lookupIO nId ns >>= maybe (pure 0) expire
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expire v = readTVarIO v >>= \case
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[] -> pure 0
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_ ->
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atomically $ readTVar v >>= \case
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[] -> pure 0
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-- check the last message first, it is the earliest
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ntfs | systemSeconds (ntfTs $ last $ ntfs) < old -> do
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let !ntfs' = filter (\MsgNtf {ntfTs = ts} -> systemSeconds ts >= old) ntfs
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writeTVar v ntfs'
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pure $! length ntfs - length ntfs'
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_ -> pure 0
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data NtfLogRecord = NLRv1 NotifierId MsgNtf
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instance StrEncoding MsgNtf where
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strEncode MsgNtf {ntfMsgId, ntfTs, ntfNonce, ntfEncMeta} = strEncode (ntfMsgId, ntfTs, ntfNonce, ntfEncMeta)
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strP = do
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(ntfMsgId, ntfTs, ntfNonce, ntfEncMeta) <- strP
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pure MsgNtf {ntfMsgId, ntfTs, ntfNonce, ntfEncMeta}
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instance StrEncoding NtfLogRecord where
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strEncode (NLRv1 nId ntf) = strEncode (Str "v1", nId, ntf)
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strP = "v1 " *> (NLRv1 <$> strP_ <*> strP)
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