mirror of
https://github.com/simplex-chat/simplexmq.git
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22e1932372
* xftp: refactor, reuse workers abstractions (wip, test fails) * rename * refactor (tests pass) * refactor2 * linebreaks * do * reuse worker abstractions for notifications --------- Co-authored-by: Evgeny Poberezkin <2769109+epoberezkin@users.noreply.github.com>
557 lines
29 KiB
Haskell
557 lines
29 KiB
Haskell
{-# LANGUAGE ConstraintKinds #-}
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{-# LANGUAGE DataKinds #-}
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{-# LANGUAGE DuplicateRecordFields #-}
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{-# LANGUAGE FlexibleContexts #-}
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{-# LANGUAGE LambdaCase #-}
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{-# LANGUAGE NamedFieldPuns #-}
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{-# LANGUAGE OverloadedStrings #-}
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{-# LANGUAGE RankNTypes #-}
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{-# LANGUAGE ScopedTypeVariables #-}
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{-# LANGUAGE TypeApplications #-}
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{-# OPTIONS_GHC -fno-warn-ambiguous-fields #-}
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module Simplex.FileTransfer.Agent
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( startXFTPWorkers,
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closeXFTPAgent,
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toFSFilePath,
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-- Receiving files
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xftpReceiveFile',
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xftpDeleteRcvFile',
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-- Sending files
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xftpSendFile',
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deleteSndFileInternal,
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deleteSndFileRemote,
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)
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where
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import Control.Logger.Simple (logError)
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import Control.Monad
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import Control.Monad.Except
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import Control.Monad.Reader
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import qualified Data.ByteString.Char8 as B
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import qualified Data.ByteString.Lazy.Char8 as LB
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import Data.Composition ((.:))
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import Data.Int (Int64)
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import Data.List (foldl', sortOn)
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import qualified Data.List.NonEmpty as L
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import Data.Map (Map)
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import qualified Data.Map.Strict as M
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import Data.Text (Text)
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import Data.Time.Clock (getCurrentTime)
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import Data.Time.Format (defaultTimeLocale, formatTime)
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import Simplex.FileTransfer.Client (XFTPChunkSpec (..))
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import Simplex.FileTransfer.Client.Main
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import Simplex.FileTransfer.Crypto
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import Simplex.FileTransfer.Description
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import Simplex.FileTransfer.Protocol (FileParty (..), SFileParty (..))
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import Simplex.FileTransfer.Transport (XFTPRcvChunkSpec (..))
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import Simplex.FileTransfer.Types
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import Simplex.FileTransfer.Util (removePath, uniqueCombine)
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import Simplex.Messaging.Agent.Client
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import Simplex.Messaging.Agent.Env.SQLite
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import Simplex.Messaging.Agent.Protocol
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import Simplex.Messaging.Agent.RetryInterval
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import Simplex.Messaging.Agent.Store.SQLite
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import qualified Simplex.Messaging.Crypto as C
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import Simplex.Messaging.Crypto.File (CryptoFile (..), CryptoFileArgs)
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import qualified Simplex.Messaging.Crypto.File as CF
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import qualified Simplex.Messaging.Crypto.Lazy as LC
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import Simplex.Messaging.Encoding
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import Simplex.Messaging.Protocol (EntityId, XFTPServer)
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import Simplex.Messaging.Util (liftError, tshow, unlessM, whenM)
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import System.FilePath (takeFileName, (</>))
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import UnliftIO
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import UnliftIO.Directory
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startXFTPWorkers :: AgentMonad m => AgentClient -> Maybe FilePath -> m ()
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startXFTPWorkers c workDir = do
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wd <- asks $ xftpWorkDir . xftpAgent
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atomically $ writeTVar wd workDir
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cfg <- asks config
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startRcvFiles cfg
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startSndFiles cfg
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startDelFiles cfg
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where
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startRcvFiles AgentConfig {rcvFilesTTL} = do
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pendingRcvServers <- withStore' c (`getPendingRcvFilesServers` rcvFilesTTL)
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forM_ pendingRcvServers $ \s -> resumeXFTPRcvWork c (Just s)
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-- start local worker for files pending decryption,
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-- no need to make an extra query for the check
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-- as the worker will check the store anyway
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resumeXFTPRcvWork c Nothing
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startSndFiles AgentConfig {sndFilesTTL} = do
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-- start worker for files pending encryption/creation
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resumeXFTPSndWork c Nothing
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pendingSndServers <- withStore' c (`getPendingSndFilesServers` sndFilesTTL)
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forM_ pendingSndServers $ \s -> resumeXFTPSndWork c (Just s)
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startDelFiles AgentConfig {rcvFilesTTL} = do
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pendingDelServers <- withStore' c (`getPendingDelFilesServers` rcvFilesTTL)
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forM_ pendingDelServers $ resumeXFTPDelWork c
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closeXFTPAgent :: MonadUnliftIO m => XFTPAgent -> m ()
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closeXFTPAgent a = do
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stopWorkers $ xftpRcvWorkers a
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stopWorkers $ xftpSndWorkers a
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stopWorkers $ xftpDelWorkers a
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where
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stopWorkers workers = atomically (swapTVar workers M.empty) >>= mapM_ (liftIO . cancelWorker)
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xftpReceiveFile' :: AgentMonad m => AgentClient -> UserId -> ValidFileDescription 'FRecipient -> Maybe CryptoFileArgs -> m RcvFileId
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xftpReceiveFile' c userId (ValidFileDescription fd@FileDescription {chunks}) cfArgs = do
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g <- asks random
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prefixPath <- getPrefixPath "rcv.xftp"
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createDirectory prefixPath
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let relPrefixPath = takeFileName prefixPath
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relTmpPath = relPrefixPath </> "xftp.encrypted"
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relSavePath = relPrefixPath </> "xftp.decrypted"
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createDirectory =<< toFSFilePath relTmpPath
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createEmptyFile =<< toFSFilePath relSavePath
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let saveFile = CryptoFile relSavePath cfArgs
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fId <- withStore c $ \db -> createRcvFile db g userId fd relPrefixPath relTmpPath saveFile
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forM_ chunks downloadChunk
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pure fId
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where
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downloadChunk :: AgentMonad m => FileChunk -> m ()
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downloadChunk FileChunk {replicas = (FileChunkReplica {server} : _)} = do
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void $ getXFTPRcvWorker True c (Just server)
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downloadChunk _ = throwError $ INTERNAL "no replicas"
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getPrefixPath :: AgentMonad m => String -> m FilePath
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getPrefixPath suffix = do
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workPath <- getXFTPWorkPath
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ts <- liftIO getCurrentTime
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let isoTime = formatTime defaultTimeLocale "%Y%m%d_%H%M%S_%6q" ts
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uniqueCombine workPath (isoTime <> "_" <> suffix)
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toFSFilePath :: AgentMonad m => FilePath -> m FilePath
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toFSFilePath f = (</> f) <$> getXFTPWorkPath
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createEmptyFile :: AgentMonad m => FilePath -> m ()
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createEmptyFile fPath = liftIO $ B.writeFile fPath ""
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resumeXFTPRcvWork :: AgentMonad' m => AgentClient -> Maybe XFTPServer -> m ()
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resumeXFTPRcvWork = void .: getXFTPRcvWorker False
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getXFTPRcvWorker :: AgentMonad' m => Bool -> AgentClient -> Maybe XFTPServer -> m Worker
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getXFTPRcvWorker hasWork c server = do
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ws <- asks $ xftpRcvWorkers . xftpAgent
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getAgentWorker hasWork c server ws $
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maybe (runXFTPRcvLocalWorker c) (runXFTPRcvWorker c) server
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runXFTPRcvWorker :: forall m. AgentMonad m => AgentClient -> XFTPServer -> Worker -> m ()
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runXFTPRcvWorker c srv Worker {doWork} = do
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cfg <- asks config
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forever $ do
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waitForWork doWork
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atomically $ assertAgentForeground c
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runXFTPOperation cfg
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where
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runXFTPOperation :: AgentConfig -> m ()
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runXFTPOperation AgentConfig {rcvFilesTTL, reconnectInterval = ri, xftpNotifyErrsOnRetry = notifyOnRetry, xftpConsecutiveRetries} =
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withWork c doWork (\db -> getNextRcvChunkToDownload db srv rcvFilesTTL) $ \case
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RcvFileChunk {rcvFileId, rcvFileEntityId, fileTmpPath, replicas = []} -> rcvWorkerInternalError c rcvFileId rcvFileEntityId (Just fileTmpPath) "chunk has no replicas"
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fc@RcvFileChunk {userId, rcvFileId, rcvFileEntityId, digest, fileTmpPath, replicas = replica@RcvFileChunkReplica {rcvChunkReplicaId, server, delay} : _} -> do
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let ri' = maybe ri (\d -> ri {initialInterval = d, increaseAfter = 0}) delay
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withRetryIntervalLimit xftpConsecutiveRetries ri' $ \delay' loop ->
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downloadFileChunk fc replica
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`catchAgentError` \e -> retryOnError "XFTP rcv worker" (retryLoop loop e delay') (retryDone e) e
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where
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retryLoop loop e replicaDelay = do
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flip catchAgentError (\_ -> pure ()) $ do
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when notifyOnRetry $ notify c rcvFileEntityId $ RFERR e
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closeXFTPServerClient c userId server digest
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withStore' c $ \db -> updateRcvChunkReplicaDelay db rcvChunkReplicaId replicaDelay
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atomically $ assertAgentForeground c
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loop
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retryDone e = rcvWorkerInternalError c rcvFileId rcvFileEntityId (Just fileTmpPath) (show e)
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downloadFileChunk :: RcvFileChunk -> RcvFileChunkReplica -> m ()
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downloadFileChunk RcvFileChunk {userId, rcvFileId, rcvFileEntityId, rcvChunkId, chunkNo, chunkSize, digest, fileTmpPath} replica = do
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fsFileTmpPath <- toFSFilePath fileTmpPath
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chunkPath <- uniqueCombine fsFileTmpPath $ show chunkNo
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let chunkSpec = XFTPRcvChunkSpec chunkPath (unFileSize chunkSize) (unFileDigest digest)
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relChunkPath = fileTmpPath </> takeFileName chunkPath
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agentXFTPDownloadChunk c userId digest replica chunkSpec
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atomically $ waitUntilForeground c
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(complete, progress) <- withStore c $ \db -> runExceptT $ do
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liftIO $ updateRcvFileChunkReceived db (rcvChunkReplicaId replica) rcvChunkId relChunkPath
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RcvFile {size = FileSize total, chunks} <- ExceptT $ getRcvFile db rcvFileId
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let rcvd = receivedSize chunks
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complete = all chunkReceived chunks
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liftIO . when complete $ updateRcvFileStatus db rcvFileId RFSReceived
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pure (complete, RFPROG rcvd total)
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notify c rcvFileEntityId progress
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when complete . void $
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getXFTPRcvWorker True c Nothing
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where
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receivedSize :: [RcvFileChunk] -> Int64
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receivedSize = foldl' (\sz ch -> sz + receivedChunkSize ch) 0
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receivedChunkSize ch@RcvFileChunk {chunkSize = s}
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| chunkReceived ch = fromIntegral (unFileSize s)
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| otherwise = 0
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chunkReceived RcvFileChunk {replicas} = any received replicas
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-- The first call of action has n == 0, maxN is max number of retries
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withRetryIntervalLimit :: forall m. MonadIO m => Int -> RetryInterval -> (Int64 -> m () -> m ()) -> m ()
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withRetryIntervalLimit maxN ri action =
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withRetryIntervalCount ri $ \n delay loop ->
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when (n < maxN) $ action delay loop
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retryOnError :: AgentMonad m => Text -> m a -> m a -> AgentErrorType -> m a
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retryOnError name loop done e = do
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logError $ name <> " error: " <> tshow e
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if temporaryAgentError e
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then loop
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else done
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rcvWorkerInternalError :: AgentMonad m => AgentClient -> DBRcvFileId -> RcvFileId -> Maybe FilePath -> String -> m ()
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rcvWorkerInternalError c rcvFileId rcvFileEntityId tmpPath internalErrStr = do
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forM_ tmpPath (removePath <=< toFSFilePath)
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withStore' c $ \db -> updateRcvFileError db rcvFileId internalErrStr
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notify c rcvFileEntityId $ RFERR $ INTERNAL internalErrStr
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runXFTPRcvLocalWorker :: forall m. AgentMonad m => AgentClient -> Worker -> m ()
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runXFTPRcvLocalWorker c Worker {doWork} = do
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cfg <- asks config
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forever $ do
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waitForWork doWork
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atomically $ assertAgentForeground c
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runXFTPOperation cfg
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where
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runXFTPOperation :: AgentConfig -> m ()
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runXFTPOperation AgentConfig {rcvFilesTTL} =
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withWork c doWork (`getNextRcvFileToDecrypt` rcvFilesTTL) $
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\f@RcvFile {rcvFileId, rcvFileEntityId, tmpPath} ->
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decryptFile f `catchAgentError` (rcvWorkerInternalError c rcvFileId rcvFileEntityId tmpPath . show)
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decryptFile :: RcvFile -> m ()
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decryptFile RcvFile {rcvFileId, rcvFileEntityId, key, nonce, tmpPath, saveFile, status, chunks} = do
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let CryptoFile savePath cfArgs = saveFile
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fsSavePath <- toFSFilePath savePath
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when (status == RFSDecrypting) $
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whenM (doesFileExist fsSavePath) (removeFile fsSavePath >> createEmptyFile fsSavePath)
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withStore' c $ \db -> updateRcvFileStatus db rcvFileId RFSDecrypting
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chunkPaths <- getChunkPaths chunks
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encSize <- liftIO $ foldM (\s path -> (s +) . fromIntegral <$> getFileSize path) 0 chunkPaths
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let destFile = CryptoFile fsSavePath cfArgs
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void $ liftError (INTERNAL . show) $ decryptChunks encSize chunkPaths key nonce $ \_ -> pure destFile
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notify c rcvFileEntityId $ RFDONE fsSavePath
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forM_ tmpPath (removePath <=< toFSFilePath)
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atomically $ waitUntilForeground c
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withStore' c (`updateRcvFileComplete` rcvFileId)
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where
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getChunkPaths :: [RcvFileChunk] -> m [FilePath]
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getChunkPaths [] = pure []
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getChunkPaths (RcvFileChunk {chunkTmpPath = Just path} : cs) = do
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ps <- getChunkPaths cs
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fsPath <- toFSFilePath path
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pure $ fsPath : ps
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getChunkPaths (RcvFileChunk {chunkTmpPath = Nothing} : _cs) =
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throwError $ INTERNAL "no chunk path"
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xftpDeleteRcvFile' :: AgentMonad m => AgentClient -> RcvFileId -> m ()
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xftpDeleteRcvFile' c rcvFileEntityId = do
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RcvFile {rcvFileId, prefixPath, status} <- withStore c $ \db -> getRcvFileByEntityId db rcvFileEntityId
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if status == RFSComplete || status == RFSError
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then do
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removePath prefixPath
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withStore' c (`deleteRcvFile'` rcvFileId)
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else withStore' c (`updateRcvFileDeleted` rcvFileId)
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notify :: forall m e. (MonadUnliftIO m, AEntityI e) => AgentClient -> EntityId -> ACommand 'Agent e -> m ()
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notify c entId cmd = atomically $ writeTBQueue (subQ c) ("", entId, APC (sAEntity @e) cmd)
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xftpSendFile' :: AgentMonad m => AgentClient -> UserId -> CryptoFile -> Int -> m SndFileId
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xftpSendFile' c userId file numRecipients = do
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g <- asks random
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prefixPath <- getPrefixPath "snd.xftp"
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createDirectory prefixPath
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let relPrefixPath = takeFileName prefixPath
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key <- atomically $ C.randomSbKey g
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nonce <- atomically $ C.randomCbNonce g
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-- saving absolute filePath will not allow to restore file encryption after app update, but it's a short window
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fId <- withStore c $ \db -> createSndFile db g userId file numRecipients relPrefixPath key nonce
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void $ getXFTPSndWorker True c Nothing
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pure fId
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resumeXFTPSndWork :: AgentMonad' m => AgentClient -> Maybe XFTPServer -> m ()
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resumeXFTPSndWork = void .: getXFTPSndWorker False
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getXFTPSndWorker :: AgentMonad' m => Bool -> AgentClient -> Maybe XFTPServer -> m Worker
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getXFTPSndWorker hasWork c server = do
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ws <- asks $ xftpSndWorkers . xftpAgent
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getAgentWorker hasWork c server ws $
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maybe (runXFTPSndPrepareWorker c) (runXFTPSndWorker c) server
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runXFTPSndPrepareWorker :: forall m. AgentMonad m => AgentClient -> Worker -> m ()
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runXFTPSndPrepareWorker c Worker {doWork} = do
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cfg <- asks config
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forever $ do
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waitForWork doWork
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atomically $ assertAgentForeground c
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runXFTPOperation cfg
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where
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runXFTPOperation :: AgentConfig -> m ()
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runXFTPOperation cfg@AgentConfig {sndFilesTTL} =
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withWork c doWork (`getNextSndFileToPrepare` sndFilesTTL) $
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\f@SndFile {sndFileId, sndFileEntityId, prefixPath} ->
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prepareFile cfg f `catchAgentError` (sndWorkerInternalError c sndFileId sndFileEntityId prefixPath . show)
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prepareFile :: AgentConfig -> SndFile -> m ()
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prepareFile _ SndFile {prefixPath = Nothing} =
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throwError $ INTERNAL "no prefix path"
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prepareFile cfg sndFile@SndFile {sndFileId, userId, prefixPath = Just ppath, status} = do
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SndFile {numRecipients, chunks} <-
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if status /= SFSEncrypted -- status is SFSNew or SFSEncrypting
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then do
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fsEncPath <- toFSFilePath $ sndFileEncPath ppath
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when (status == SFSEncrypting) . whenM (doesFileExist fsEncPath) $
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removeFile fsEncPath
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withStore' c $ \db -> updateSndFileStatus db sndFileId SFSEncrypting
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(digest, chunkSpecsDigests) <- encryptFileForUpload sndFile fsEncPath
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withStore c $ \db -> do
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updateSndFileEncrypted db sndFileId digest chunkSpecsDigests
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getSndFile db sndFileId
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else pure sndFile
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let numRecipients' = min numRecipients maxRecipients
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-- concurrently?
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-- separate worker to create chunks? record retries and delay on snd_file_chunks?
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forM_ (filter (not . chunkCreated) chunks) $ createChunk numRecipients'
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withStore' c $ \db -> updateSndFileStatus db sndFileId SFSUploading
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where
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AgentConfig {xftpMaxRecipientsPerRequest = maxRecipients, messageRetryInterval = ri} = cfg
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encryptFileForUpload :: SndFile -> FilePath -> m (FileDigest, [(XFTPChunkSpec, FileDigest)])
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encryptFileForUpload SndFile {key, nonce, srcFile} fsEncPath = do
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let CryptoFile {filePath} = srcFile
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fileName = takeFileName filePath
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fileSize <- liftIO $ fromInteger <$> CF.getFileContentsSize srcFile
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when (fileSize > maxFileSize) $ throwError $ INTERNAL "max file size exceeded"
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let fileHdr = smpEncode FileHeader {fileName, fileExtra = Nothing}
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fileSize' = fromIntegral (B.length fileHdr) + fileSize
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chunkSizes = prepareChunkSizes $ fileSize' + fileSizeLen + authTagSize
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chunkSizes' = map fromIntegral chunkSizes
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encSize = sum chunkSizes'
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void $ liftError (INTERNAL . show) $ encryptFile srcFile fileHdr key nonce fileSize' encSize fsEncPath
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digest <- liftIO $ LC.sha512Hash <$> LB.readFile fsEncPath
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let chunkSpecs = prepareChunkSpecs fsEncPath chunkSizes
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chunkDigests <- map FileDigest <$> mapM (liftIO . getChunkDigest) chunkSpecs
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pure (FileDigest digest, zip chunkSpecs chunkDigests)
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chunkCreated :: SndFileChunk -> Bool
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chunkCreated SndFileChunk {replicas} =
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any (\SndFileChunkReplica {replicaStatus} -> replicaStatus == SFRSCreated) replicas
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createChunk :: Int -> SndFileChunk -> m ()
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createChunk numRecipients' ch = do
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atomically $ assertAgentForeground c
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(replica, ProtoServerWithAuth srv _) <- tryCreate
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withStore' c $ \db -> createSndFileReplica db ch replica
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void $ getXFTPSndWorker True c (Just srv)
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where
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tryCreate = do
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usedSrvs <- newTVarIO ([] :: [XFTPServer])
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withRetryInterval (riFast ri) $ \_ loop ->
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createWithNextSrv usedSrvs
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`catchAgentError` \e -> retryOnError "XFTP prepare worker" (retryLoop loop) (throwError e) e
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where
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retryLoop loop = atomically (assertAgentForeground c) >> loop
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createWithNextSrv usedSrvs = do
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deleted <- withStore' c $ \db -> getSndFileDeleted db sndFileId
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when deleted $ throwError $ INTERNAL "file deleted, aborting chunk creation"
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withNextSrv c userId usedSrvs [] $ \srvAuth -> do
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replica <- agentXFTPNewChunk c ch numRecipients' srvAuth
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pure (replica, srvAuth)
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sndWorkerInternalError :: AgentMonad m => AgentClient -> DBSndFileId -> SndFileId -> Maybe FilePath -> String -> m ()
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sndWorkerInternalError c sndFileId sndFileEntityId prefixPath internalErrStr = do
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forM_ prefixPath $ removePath <=< toFSFilePath
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withStore' c $ \db -> updateSndFileError db sndFileId internalErrStr
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notify c sndFileEntityId $ SFERR $ INTERNAL internalErrStr
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runXFTPSndWorker :: forall m. AgentMonad m => AgentClient -> XFTPServer -> Worker -> m ()
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runXFTPSndWorker c srv Worker {doWork} = do
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cfg <- asks config
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forever $ do
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waitForWork doWork
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atomically $ assertAgentForeground c
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runXFTPOperation cfg
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where
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runXFTPOperation :: AgentConfig -> m ()
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runXFTPOperation cfg@AgentConfig {sndFilesTTL, reconnectInterval = ri, xftpNotifyErrsOnRetry = notifyOnRetry, xftpConsecutiveRetries} = do
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withWork c doWork (\db -> getNextSndChunkToUpload db srv sndFilesTTL) $ \case
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SndFileChunk {sndFileId, sndFileEntityId, filePrefixPath, replicas = []} -> sndWorkerInternalError c sndFileId sndFileEntityId (Just filePrefixPath) "chunk has no replicas"
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fc@SndFileChunk {userId, sndFileId, sndFileEntityId, filePrefixPath, digest, replicas = replica@SndFileChunkReplica {sndChunkReplicaId, server, delay} : _} -> do
|
|
let ri' = maybe ri (\d -> ri {initialInterval = d, increaseAfter = 0}) delay
|
|
withRetryIntervalLimit xftpConsecutiveRetries ri' $ \delay' loop ->
|
|
uploadFileChunk cfg fc replica
|
|
`catchAgentError` \e -> retryOnError "XFTP snd worker" (retryLoop loop e delay') (retryDone e) e
|
|
where
|
|
retryLoop loop e replicaDelay = do
|
|
flip catchAgentError (\_ -> pure ()) $ do
|
|
when notifyOnRetry $ notify c sndFileEntityId $ SFERR e
|
|
closeXFTPServerClient c userId server digest
|
|
withStore' c $ \db -> updateSndChunkReplicaDelay db sndChunkReplicaId replicaDelay
|
|
atomically $ assertAgentForeground c
|
|
loop
|
|
retryDone e = sndWorkerInternalError c sndFileId sndFileEntityId (Just filePrefixPath) (show e)
|
|
uploadFileChunk :: AgentConfig -> SndFileChunk -> SndFileChunkReplica -> m ()
|
|
uploadFileChunk AgentConfig {xftpMaxRecipientsPerRequest = maxRecipients} sndFileChunk@SndFileChunk {sndFileId, userId, chunkSpec = chunkSpec@XFTPChunkSpec {filePath}, digest = chunkDigest} replica = do
|
|
replica'@SndFileChunkReplica {sndChunkReplicaId} <- addRecipients sndFileChunk replica
|
|
fsFilePath <- toFSFilePath filePath
|
|
unlessM (doesFileExist fsFilePath) $ throwError $ INTERNAL "encrypted file doesn't exist on upload"
|
|
let chunkSpec' = chunkSpec {filePath = fsFilePath} :: XFTPChunkSpec
|
|
atomically $ assertAgentForeground c
|
|
agentXFTPUploadChunk c userId chunkDigest replica' chunkSpec'
|
|
atomically $ waitUntilForeground c
|
|
sf@SndFile {sndFileEntityId, prefixPath, chunks} <- withStore c $ \db -> do
|
|
updateSndChunkReplicaStatus db sndChunkReplicaId SFRSUploaded
|
|
getSndFile db sndFileId
|
|
let uploaded = uploadedSize chunks
|
|
total = totalSize chunks
|
|
complete = all chunkUploaded chunks
|
|
notify c sndFileEntityId $ SFPROG uploaded total
|
|
when complete $ do
|
|
(sndDescr, rcvDescrs) <- sndFileToDescrs sf
|
|
notify c sndFileEntityId $ SFDONE sndDescr rcvDescrs
|
|
forM_ prefixPath $ removePath <=< toFSFilePath
|
|
withStore' c $ \db -> updateSndFileComplete db sndFileId
|
|
where
|
|
addRecipients :: SndFileChunk -> SndFileChunkReplica -> m SndFileChunkReplica
|
|
addRecipients ch@SndFileChunk {numRecipients} cr@SndFileChunkReplica {rcvIdsKeys}
|
|
| length rcvIdsKeys > numRecipients = throwError $ INTERNAL "too many recipients"
|
|
| length rcvIdsKeys == numRecipients = pure cr
|
|
| otherwise = do
|
|
let numRecipients' = min (numRecipients - length rcvIdsKeys) maxRecipients
|
|
rcvIdsKeys' <- agentXFTPAddRecipients c userId chunkDigest cr numRecipients'
|
|
cr' <- withStore' c $ \db -> addSndChunkReplicaRecipients db cr $ L.toList rcvIdsKeys'
|
|
addRecipients ch cr'
|
|
sndFileToDescrs :: SndFile -> m (ValidFileDescription 'FSender, [ValidFileDescription 'FRecipient])
|
|
sndFileToDescrs SndFile {digest = Nothing} = throwError $ INTERNAL "snd file has no digest"
|
|
sndFileToDescrs SndFile {chunks = []} = throwError $ INTERNAL "snd file has no chunks"
|
|
sndFileToDescrs SndFile {digest = Just digest, key, nonce, chunks = chunks@(fstChunk : _)} = do
|
|
let chunkSize = FileSize $ sndChunkSize fstChunk
|
|
size = FileSize $ sum $ map (fromIntegral . sndChunkSize) chunks
|
|
-- snd description
|
|
sndDescrChunks <- mapM toSndDescrChunk chunks
|
|
let fdSnd = FileDescription {party = SFSender, size, digest, key, nonce, chunkSize, chunks = sndDescrChunks}
|
|
validFdSnd <- either (throwError . INTERNAL) pure $ validateFileDescription fdSnd
|
|
-- rcv descriptions
|
|
let fdRcv = FileDescription {party = SFRecipient, size, digest, key, nonce, chunkSize, chunks = []}
|
|
fdRcvs = createRcvFileDescriptions fdRcv chunks
|
|
validFdRcvs <- either (throwError . INTERNAL) pure $ mapM validateFileDescription fdRcvs
|
|
pure (validFdSnd, validFdRcvs)
|
|
toSndDescrChunk :: SndFileChunk -> m FileChunk
|
|
toSndDescrChunk SndFileChunk {replicas = []} = throwError $ INTERNAL "snd file chunk has no replicas"
|
|
toSndDescrChunk ch@SndFileChunk {chunkNo, digest = chDigest, replicas = (SndFileChunkReplica {server, replicaId, replicaKey} : _)} = do
|
|
let chunkSize = FileSize $ sndChunkSize ch
|
|
replicas = [FileChunkReplica {server, replicaId, replicaKey}]
|
|
pure FileChunk {chunkNo, digest = chDigest, chunkSize, replicas}
|
|
createRcvFileDescriptions :: FileDescription 'FRecipient -> [SndFileChunk] -> [FileDescription 'FRecipient]
|
|
createRcvFileDescriptions fd sndChunks = map (\chunks -> (fd :: (FileDescription 'FRecipient)) {chunks}) rcvChunks
|
|
where
|
|
rcvReplicas :: [SentRecipientReplica]
|
|
rcvReplicas = concatMap toSentRecipientReplicas sndChunks
|
|
toSentRecipientReplicas :: SndFileChunk -> [SentRecipientReplica]
|
|
toSentRecipientReplicas ch@SndFileChunk {chunkNo, digest, replicas} =
|
|
let chunkSize = FileSize $ sndChunkSize ch
|
|
in concatMap
|
|
( \SndFileChunkReplica {server, rcvIdsKeys} ->
|
|
zipWith
|
|
(\rcvNo (replicaId, replicaKey) -> SentRecipientReplica {chunkNo, server, rcvNo, replicaId, replicaKey, digest, chunkSize})
|
|
[1 ..]
|
|
rcvIdsKeys
|
|
)
|
|
replicas
|
|
rcvChunks :: [[FileChunk]]
|
|
rcvChunks = map (sortChunks . M.elems) $ M.elems $ foldl' addRcvChunk M.empty rcvReplicas
|
|
sortChunks :: [FileChunk] -> [FileChunk]
|
|
sortChunks = map reverseReplicas . sortOn (\FileChunk {chunkNo} -> chunkNo)
|
|
reverseReplicas ch@FileChunk {replicas} = (ch :: FileChunk) {replicas = reverse replicas}
|
|
addRcvChunk :: Map Int (Map Int FileChunk) -> SentRecipientReplica -> Map Int (Map Int FileChunk)
|
|
addRcvChunk m SentRecipientReplica {chunkNo, server, rcvNo, replicaId, replicaKey, digest, chunkSize} =
|
|
M.alter (Just . addOrChangeRecipient) rcvNo m
|
|
where
|
|
addOrChangeRecipient :: Maybe (Map Int FileChunk) -> Map Int FileChunk
|
|
addOrChangeRecipient = \case
|
|
Just m' -> M.alter (Just . addOrChangeChunk) chunkNo m'
|
|
_ -> M.singleton chunkNo $ FileChunk {chunkNo, digest, chunkSize, replicas = [replica']}
|
|
addOrChangeChunk :: Maybe FileChunk -> FileChunk
|
|
addOrChangeChunk = \case
|
|
Just ch@FileChunk {replicas} -> ch {replicas = replica' : replicas}
|
|
_ -> FileChunk {chunkNo, digest, chunkSize, replicas = [replica']}
|
|
replica' = FileChunkReplica {server, replicaId, replicaKey}
|
|
uploadedSize :: [SndFileChunk] -> Int64
|
|
uploadedSize = foldl' (\sz ch -> sz + uploadedChunkSize ch) 0
|
|
uploadedChunkSize ch
|
|
| chunkUploaded ch = fromIntegral (sndChunkSize ch)
|
|
| otherwise = 0
|
|
totalSize :: [SndFileChunk] -> Int64
|
|
totalSize = foldl' (\sz ch -> sz + fromIntegral (sndChunkSize ch)) 0
|
|
chunkUploaded :: SndFileChunk -> Bool
|
|
chunkUploaded SndFileChunk {replicas} =
|
|
any (\SndFileChunkReplica {replicaStatus} -> replicaStatus == SFRSUploaded) replicas
|
|
|
|
deleteSndFileInternal :: AgentMonad m => AgentClient -> SndFileId -> m ()
|
|
deleteSndFileInternal c sndFileEntityId = do
|
|
SndFile {sndFileId, prefixPath, status} <- withStore c $ \db -> getSndFileByEntityId db sndFileEntityId
|
|
if status == SFSComplete || status == SFSError
|
|
then do
|
|
forM_ prefixPath $ removePath <=< toFSFilePath
|
|
withStore' c (`deleteSndFile'` sndFileId)
|
|
else withStore' c (`updateSndFileDeleted` sndFileId)
|
|
|
|
deleteSndFileRemote :: forall m. AgentMonad m => AgentClient -> UserId -> SndFileId -> ValidFileDescription 'FSender -> m ()
|
|
deleteSndFileRemote c userId sndFileEntityId (ValidFileDescription FileDescription {chunks}) = do
|
|
deleteSndFileInternal c sndFileEntityId `catchAgentError` (notify c sndFileEntityId . SFERR)
|
|
forM_ chunks $ \ch -> deleteFileChunk ch `catchAgentError` (notify c sndFileEntityId . SFERR)
|
|
where
|
|
deleteFileChunk :: FileChunk -> m ()
|
|
deleteFileChunk FileChunk {digest, replicas = replica@FileChunkReplica {server} : _} = do
|
|
withStore' c $ \db -> createDeletedSndChunkReplica db userId replica digest
|
|
void $ getXFTPDelWorker True c server
|
|
deleteFileChunk _ = pure ()
|
|
|
|
resumeXFTPDelWork :: AgentMonad' m => AgentClient -> XFTPServer -> m ()
|
|
resumeXFTPDelWork = void .: getXFTPDelWorker False
|
|
|
|
getXFTPDelWorker :: AgentMonad' m => Bool -> AgentClient -> XFTPServer -> m Worker
|
|
getXFTPDelWorker hasWork c server = do
|
|
ws <- asks $ xftpDelWorkers . xftpAgent
|
|
getAgentWorker hasWork c server ws $ runXFTPDelWorker c server
|
|
|
|
runXFTPDelWorker :: forall m. AgentMonad m => AgentClient -> XFTPServer -> Worker -> m ()
|
|
runXFTPDelWorker c srv Worker {doWork} = do
|
|
cfg <- asks config
|
|
forever $ do
|
|
waitForWork doWork
|
|
atomically $ assertAgentForeground c
|
|
runXFTPOperation cfg
|
|
where
|
|
runXFTPOperation :: AgentConfig -> m ()
|
|
runXFTPOperation AgentConfig {rcvFilesTTL, reconnectInterval = ri, xftpNotifyErrsOnRetry = notifyOnRetry, xftpConsecutiveRetries} = do
|
|
-- no point in deleting files older than rcv ttl, as they will be expired on server
|
|
withWork c doWork (\db -> getNextDeletedSndChunkReplica db srv rcvFilesTTL) processDeletedReplica
|
|
where
|
|
processDeletedReplica replica@DeletedSndChunkReplica {deletedSndChunkReplicaId, userId, server, chunkDigest, delay} = do
|
|
let ri' = maybe ri (\d -> ri {initialInterval = d, increaseAfter = 0}) delay
|
|
withRetryIntervalLimit xftpConsecutiveRetries ri' $ \delay' loop ->
|
|
deleteChunkReplica
|
|
`catchAgentError` \e -> retryOnError "XFTP del worker" (retryLoop loop e delay') (retryDone e) e
|
|
where
|
|
retryLoop loop e replicaDelay = do
|
|
flip catchAgentError (\_ -> pure ()) $ do
|
|
when notifyOnRetry $ notify c "" $ SFERR e
|
|
closeXFTPServerClient c userId server chunkDigest
|
|
withStore' c $ \db -> updateDeletedSndChunkReplicaDelay db deletedSndChunkReplicaId replicaDelay
|
|
atomically $ assertAgentForeground c
|
|
loop
|
|
retryDone = delWorkerInternalError c deletedSndChunkReplicaId
|
|
deleteChunkReplica = do
|
|
agentXFTPDeleteChunk c userId replica
|
|
withStore' c $ \db -> deleteDeletedSndChunkReplica db deletedSndChunkReplicaId
|
|
|
|
delWorkerInternalError :: AgentMonad m => AgentClient -> Int64 -> AgentErrorType -> m ()
|
|
delWorkerInternalError c deletedSndChunkReplicaId e = do
|
|
withStore' c $ \db -> deleteDeletedSndChunkReplica db deletedSndChunkReplicaId
|
|
notify c "" $ SFERR e
|
|
|
|
assertAgentForeground :: AgentClient -> STM ()
|
|
assertAgentForeground c = do
|
|
throwWhenInactive c
|
|
waitUntilForeground c
|