mirror of https://github.com/voidlizard/hbs2
397 lines
12 KiB
Haskell
397 lines
12 KiB
Haskell
{-# Language RankNTypes #-}
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{-# Language TemplateHaskell #-}
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{-# Language AllowAmbiguousTypes #-}
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module Main where
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import HBS2.Prelude.Plated
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import HBS2.Clock
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import HBS2.Hash
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-- import HBS2.Net.Messaging
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import HBS2.Net.Proto
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import HBS2.Net.Proto.BlockInfo
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import HBS2.Net.Proto.BlockChunks
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import HBS2.Net.Messaging
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import HBS2.Net.Messaging.Fake
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import HBS2.Actors.Peer
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import HBS2.Defaults
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import HBS2.Storage
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import HBS2.Storage.Simple
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import HBS2.Storage.Simple.Extra
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import HBS2.Actors.ChunkWriter
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-- import Test.Tasty hiding (Timeout)
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import Test.Tasty.HUnit
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import Codec.Serialise
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import Control.Concurrent.Async
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import Control.Monad
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import Control.Monad.Trans.Maybe
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import Data.ByteString.Lazy (ByteString)
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import Data.ByteString.Lazy.Char8 qualified as B8
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import Data.Cache (Cache)
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import Data.Cache qualified as Cache
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import Data.Foldable
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import Data.Hashable
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import Data.Map (Map)
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import Data.Map qualified as Map
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import Data.Maybe
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import Data.Word
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import Lens.Micro.Platform
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import Prettyprinter
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import System.Directory
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import System.Exit
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import System.FilePath.Posix
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import System.IO
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import Control.Concurrent
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import Control.Concurrent.STM
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import Control.Concurrent.STM.TQueue qualified as Q
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debug :: (MonadIO m) => Doc ann -> m ()
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debug p = liftIO $ hPrint stderr p
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-- FIXME: peer should be a part of the key
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-- therefore, key is ( p | cookie )
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-- but client's cookie in protocol should be just ( cookie :: Word32 )
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data BlockDownload m =
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BlockDownload
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{ _sBlockHash :: Hash HbSync
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, _sBlockChunkSize :: ChunkSize
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, _sBlockOffset :: Offset
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, _sBlockWritten :: Size
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, _sOnBlockReady :: OnBlockReady HbSync m
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}
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data MySessions e m =
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Sessions
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{ _sBlockDownload :: Cache (Peer e, Cookie e) (BlockDownload m)
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, _sBlockSizes :: Cache (Hash HbSync) (Map (Peer e) Size)
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, _sBlockSize :: Cache (Hash HbSync) Size
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}
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makeLenses 'Sessions
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makeLenses 'BlockDownload
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newBlockDownload :: forall m . MonadIO m
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=> Hash HbSync
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-> OnBlockReady HbSync m
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-> BlockDownload m
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newBlockDownload h = BlockDownload h 0 0 0
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data Fake
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instance HasPeer Fake where
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newtype instance Peer Fake = FakePeer Word8
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deriving newtype (Hashable,Num,Enum,Real,Integral)
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deriving stock (Eq,Ord,Show)
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instance Pretty (Peer Fake) where
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pretty (FakePeer n) = parens ("peer" <+> pretty n)
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instance HasProtocol Fake (BlockSize Fake) where
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type instance ProtocolId (BlockSize Fake) = 1
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type instance Encoded Fake = ByteString
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decode = either (const Nothing) Just . deserialiseOrFail
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encode = serialise
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instance HasProtocol Fake (BlockChunks Fake) where
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type instance ProtocolId (BlockChunks Fake) = 2
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type instance Encoded Fake = ByteString
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decode = either (const Nothing) Just . deserialiseOrFail
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encode = serialise
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main :: IO ()
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main = do
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hSetBuffering stderr LineBuffering
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test1
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-- defaultMain $
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-- testGroup "root"
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-- [
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-- testCase "test1" test1
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-- ]
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emptySessions :: forall e m . MonadIO m => m (MySessions e m)
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emptySessions = liftIO $
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Sessions <$> Cache.newCache (Just defCookieTimeout)
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<*> Cache.newCache (Just defBlockInfoTimeout)
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<*> Cache.newCache (Just defBlockInfoTimeout)
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newSession :: (Eq k, Hashable k,MonadIO m)
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=> s
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-> Getting (Cache k v) s (Cache k v)
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-> k
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-> v
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-> m ()
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newSession se l k v = do
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let cache = view l se
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liftIO $ Cache.insert cache k v
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getSession' se l k fn = do
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let cache = view l se
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liftIO $ Cache.lookup cache k <&> fmap fn
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getSession se l k = getSession' se l k id
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updSession se def l k fn = liftIO do
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let cache = view l se
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v <- Cache.fetchWithCache cache k (const $ pure def)
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Cache.insert cache k (fn v)
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delSession se l k = liftIO do
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Cache.delete (view l se) k
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expireSession se l = liftIO do
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Cache.purgeExpired (view l se)
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-- A questionable FIX to avoid "orphans" complains
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data Adapted e = Adapted
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-- newtype FullPeerM m a = RealPeerM { fromRealPeerM :: ReaderT }
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runFakePeer :: forall e b . ( e ~ Fake
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-- , m ~ IO
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, Messaging b e ByteString
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-- , MonadIO m
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-- , Response e p m
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-- , EngineM e m
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)
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=> Peer e
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-> b
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-> EngineM e IO ()
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-> IO ()
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runFakePeer p bus work = do
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env <- newEnv p bus
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se <- emptySessions @e
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let pid = fromIntegral (hash (env ^. self)) :: Word8
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dir <- liftIO $ canonicalizePath ( ".peers" </> show pid)
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let chDir = dir </> "tmp-chunks"
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liftIO $ createDirectoryIfMissing True dir
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let opts = [ StoragePrefix dir
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]
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storage <- simpleStorageInit opts -- :: IO (SimpleStorage HbSync)
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w <- liftIO $ async $ simpleStorageWorker storage
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cww <- newChunkWriterIO storage (Just chDir)
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cw <- async $ runChunkWriter cww
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let size = 1024*1024
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let blk = B8.concat [ fromString (take 1 $ show x)
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| x <- replicate size (fromIntegral pid :: Int)
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]
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root <- putAsMerkle storage blk
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debug $ "I'm" <+> pretty pid <+> pretty root
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let handleBlockInfo (p, h, sz') = do
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maybe1 sz' (pure ()) $ \sz -> do
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let bsz = fromIntegral sz
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-- here we cache block size information
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updSession se mempty sBlockSizes h (Map.insert p bsz)
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updSession se bsz sBlockSize h (const bsz)
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debug $ pretty p <+> "has block" <+> pretty h <+> pretty sz'
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let adapter =
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BlockChunksI
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{ blkSize = hasBlock storage
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, blkChunk = getChunk storage
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, blkGetHash = \c -> getSession' se sBlockDownload c (view sBlockHash)
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-- КАК ТОЛЬКО ПРИНЯЛИ ВСЕ ЧАНКИ (ПРИШЁЛ ПОСЛЕДНИЙ ЧАНК):
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-- СЧИТАЕМ ХЭШ ТОГО, ЧТО ПОЛУЧИЛОСЬ
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-- ЕСЛИ ПОЛУЧИЛОСЬ ХОРОШО --- ТО:
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-- ПЕРЕЗАПИСЫВАЕМ БЛОК В СТОРЕЙДЖ
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-- ГОВОРИМ ОЖИДАЮЩЕЙ СТОРОНЕ, ЧТО БЛОК ПРИНЯТ?
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-- УДАЛЯЕМ КУКУ?
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, blkAcceptChunk = \(c,p,h,n,bs) -> void $ runMaybeT $ do
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let cKey = (p,c)
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-- check if there is a session
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void $ MaybeT $ getSession' se sBlockDownload cKey id
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let def = newBlockDownload h dontHandle
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let bslen = fromIntegral $ B8.length bs
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-- TODO: log this situation
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mbSize <- MaybeT $ getSession' se sBlockSizes h (Map.lookup p) <&> fromMaybe Nothing
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mbChSize <- MaybeT $ getSession' se sBlockDownload cKey (view sBlockChunkSize)
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let offset = fromIntegral n * fromIntegral mbChSize :: Offset
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updSession se def sBlockDownload cKey (over sBlockOffset (max offset))
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liftIO $ do
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writeChunk cww cKey h offset bs
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updSession se def sBlockDownload cKey (over sBlockWritten (+bslen))
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dwnld <- MaybeT $ getSession' se sBlockDownload cKey id
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let maxOff = view sBlockOffset dwnld
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let written = view sBlockWritten dwnld
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let notify = view sOnBlockReady dwnld
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let mbDone = (maxOff + fromIntegral mbChSize) > fromIntegral mbSize
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&& written >= mbSize
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when mbDone $ lift do
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deferred (Proxy @(BlockChunks e)) $ do
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h1 <- liftIO $ getHash cww cKey h
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-- ПОСЧИТАТЬ ХЭШ
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-- ЕСЛИ СОШЁЛСЯ - ФИНАЛИЗИРОВАТЬ БЛОК
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-- ЕСЛИ НЕ СОШЁЛСЯ - ТО ПОДОЖДАТЬ ЕЩЕ
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when ( h1 == h ) $ do
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lift $ commitBlock cww cKey h
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lift $ notify h
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delSession se sBlockDownload cKey
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when (written > mbSize * defBlockDownloadThreshold) $ do
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debug $ "SESSION DELETED BECAUSE THAT PEER IS JERK:" <+> pretty p
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delSession se sBlockDownload cKey
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-- ЕСЛИ ТУТ ВИСЕТЬ ДОЛГО, ТО НАС МОЖНО ДИДОСИТЬ,
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-- ПОСЫЛАЯ НЕ ВСЕ БЛОКИ ЧАНКА ИЛИ ПОСЫЛАЯ ОТДЕЛЬНЫЕ
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-- ЧАНКИ ПО МНОГУ РАЗ. А МЫ БУДЕМ ХЭШИ СЧИТАТЬ.
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-- ТАК НЕ ПОЙДЕТ
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-- ТАК ЧТО ТУТ ЖДЁМ, ДОПУСТИМ 2*mbSize и отваливаемся
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}
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peer <- async $ runPeer env
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[ makeResponse (blockSizeProto (hasBlock storage) handleBlockInfo)
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, makeResponse (blockChunksProto adapter)
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]
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runEngineM env work
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simpleStorageStop storage
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stopChunkWriter cww
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mapM_ cancel [w,cw,peer]
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test1 :: IO ()
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test1 = do
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hSetBuffering stderr LineBuffering
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fake <- newFakeP2P True
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void $ race (pause (2 :: Timeout 'Seconds)) $ do
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let p0 = 0 :: Peer Fake
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let p1 = 1 :: Peer Fake
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p1Thread <- async $ runFakePeer p1 fake (liftIO $ forever yield)
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p0Thread <- async $ runFakePeer p0 fake $ do
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request p1 (GetBlockSize @Fake (fromString "81JeD7LNR6Q7RYfyWBxfjJn1RsWzvegkUXae6FUNgrMZ"))
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request p1 (GetBlockSize @Fake (fromString "5KP4vM6RuEX6RA1ywthBMqZV5UJDLANC17UrF6zuWdRt"))
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let h = fromString "81JeD7LNR6Q7RYfyWBxfjJn1RsWzvegkUXae6FUNgrMZ"
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-- updateSession cookie (id)
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-- se <- getSession cookie (lens)
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-- cookie <- newSession ???
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-- newCookie <- genCookie @Fake (p1, h) -- <<~~~ FIXME: generate a good session id!
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-- let cKey@(_, cookie) = (p1, newCookie)
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pure ()
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let peerz = p0Thread : [p1Thread]
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-- peerz <- mapM (async . uncurry runFakePeer) ee
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--runEngineM e0 $ do
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-- -- TODO: #ASAP generate unique cookie!!
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-- --
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-- -- FIXME: withAllCrap $ do ...
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-- let s0 = (fst . head) ee
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-- newCookie <- genCookie @Fake (p1, h) -- <<~~~ FIXME: generate a good session id!
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-- let cKey@(_, cookie) = (p1, newCookie)
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-- let chsz = defChunkSize
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-- debug $ "new cookie:" <+> pretty cookie
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-- qblk <- liftIO Q.newTQueueIO
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-- let onBlockReady bh = do
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-- liftIO $ atomically $ Q.writeTQueue qblk bh
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-- let def = newBlockDownload h onBlockReady
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-- -- create sessions before sequesting anything
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-- updSession s0 def sBlockDownload cKey (set sBlockChunkSize chsz)
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-- request p1 (GetBlockSize @Fake (fromString "81JeD7LNR6Q7RYfyWBxfjJn1RsWzvegkUXae6FUNgrMZ"))
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-- request p1 (GetBlockSize @Fake (fromString "5KP4vM6RuEX6RA1ywthBMqZV5UJDLANC17UrF6zuWdRt"))
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-- request p0 (GetBlockSize @Fake (fromString "81JeD7LNR6Q7RYfyWBxfjJn1RsWzvegkUXae6FUNgrMZ"))
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-- request p0 (GetBlockSize @Fake (fromString "5KP4vM6RuEX6RA1ywthBMqZV5UJDLANC17UrF6zuWdRt"))
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-- -- TODO: #ASAP block ready notification
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-- debug $ "REQUEST BLOCK:" <+> pretty h <+> "from" <+> pretty p1
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-- request p1 (BlockChunks @Fake cookie (BlockGetAllChunks h chsz))
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-- blk <- liftIO $ atomically $ Q.readTQueue qblk
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-- debug $ "BLOCK READY:" <+> pretty blk
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-- -- TODO: смотрим, что за блок
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-- -- если Merkle - то качаем рекурсивно
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-- -- если ссылка - то смотрим, что за ссылка
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-- -- проверяем пруфы
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-- -- качаем рекурсивно
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-- -- let mbLink = deserialiseOrFail @Merkle obj
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-- pure ()
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mapM_ cancel peerz
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(_, e) <- waitAnyCatchCancel peerz
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debug (pretty $ show e)
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debug "we're done"
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assertBool "success" True
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exitSuccess
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assertBool "failed" False
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