mirror of https://github.com/voidlizard/hbs2
387 lines
11 KiB
Haskell
387 lines
11 KiB
Haskell
{-# Language RankNTypes #-}
|
||
{-# Language TemplateHaskell #-}
|
||
module Main where
|
||
|
||
import HBS2.Prelude.Plated
|
||
import HBS2.Clock
|
||
import HBS2.Hash
|
||
-- import HBS2.Net.Messaging
|
||
import HBS2.Net.Proto
|
||
import HBS2.Net.Proto.BlockInfo
|
||
import HBS2.Net.Messaging.Fake
|
||
import HBS2.Net.Peer
|
||
import HBS2.Defaults
|
||
|
||
import HBS2.Storage.Simple
|
||
import HBS2.Storage.Simple.Extra
|
||
import HBS2.Actors.ChunkWriter
|
||
|
||
-- import Test.Tasty hiding (Timeout)
|
||
import Test.Tasty.HUnit
|
||
|
||
import Codec.Serialise
|
||
import Control.Concurrent.Async
|
||
import Data.ByteString.Lazy (ByteString)
|
||
import Data.ByteString.Lazy.Char8 qualified as B8
|
||
import Data.Foldable
|
||
import Data.Hashable
|
||
import Data.Maybe
|
||
import Data.Traversable
|
||
import Data.Word
|
||
import Lens.Micro.Platform
|
||
import Prettyprinter
|
||
import System.Directory
|
||
import System.Exit
|
||
import System.FilePath.Posix
|
||
import System.IO
|
||
import Data.Cache (Cache)
|
||
import Data.Cache qualified as Cache
|
||
import Data.Map (Map)
|
||
import Data.Map qualified as Map
|
||
import Control.Monad.Trans.Maybe
|
||
|
||
debug :: (MonadIO m) => Doc ann -> m ()
|
||
debug p = liftIO $ hPrint stderr p
|
||
|
||
newtype ChunkSize = ChunkSize Word16
|
||
deriving newtype (Num,Enum,Real,Integral,Pretty)
|
||
deriving stock (Eq,Ord,Show,Data,Generic)
|
||
|
||
|
||
newtype ChunkNum = ChunkNum Word16
|
||
deriving newtype (Num,Enum,Real,Integral,Pretty)
|
||
deriving stock (Eq,Ord,Show,Data,Generic)
|
||
|
||
|
||
-- FIXME: peer should be a part of the key
|
||
-- therefore, key is ( p | cookie )
|
||
-- but client's cookie in protocol should be just ( cookie :: Word32 )
|
||
|
||
data BlockDownload =
|
||
BlockDownload
|
||
{ _sBlockHash :: Hash HbSync
|
||
, _sBlockChunkSize :: ChunkSize
|
||
, _sBlockOffset :: Offset
|
||
, _sBlockWritten :: Size
|
||
}
|
||
|
||
data Sessions e =
|
||
Sessions
|
||
{ _sBlockDownload :: Cache (Peer e, Cookie e) BlockDownload
|
||
, _sBlockSizes :: Cache (Hash HbSync) (Map (Peer e) Size)
|
||
, _sBlockSize :: Cache (Hash HbSync) Size
|
||
}
|
||
|
||
|
||
|
||
makeLenses 'Sessions
|
||
makeLenses 'BlockDownload
|
||
|
||
newBlockDownload :: Hash HbSync -> BlockDownload
|
||
newBlockDownload h = BlockDownload h 0 0 0
|
||
|
||
type GetBlockChunk h m = Hash h -> Offset -> Size -> m (Maybe ByteString)
|
||
|
||
|
||
data BlockChunksI e m =
|
||
BlockChunksI
|
||
{ blkSize :: GetBlockSize HbSync m
|
||
, blkChunk :: GetBlockChunk HbSync m
|
||
, blkGetHash :: (Peer e, Cookie e) -> m (Maybe (Hash HbSync))
|
||
, blkAcceptChunk :: Response e (BlockChunks e) m => (Cookie e, Peer e, Hash HbSync, ChunkNum, ByteString) -> m ()
|
||
}
|
||
|
||
|
||
instance HasCookie e (BlockChunks e) where
|
||
type instance Cookie e = Word32
|
||
getCookie (BlockChunks c _) = Just c
|
||
|
||
data BlockChunks e = BlockChunks (Cookie e) (BlockChunksProto e)
|
||
deriving stock (Generic)
|
||
|
||
data BlockChunksProto e = BlockGetAllChunks (Hash HbSync) ChunkSize
|
||
| BlockNoChunks
|
||
| BlockChunk ChunkNum ByteString
|
||
| BlockLost
|
||
deriving stock (Generic)
|
||
|
||
|
||
instance Serialise ChunkSize
|
||
instance Serialise ChunkNum
|
||
instance Serialise (BlockChunksProto e)
|
||
instance Serialise (BlockChunks e)
|
||
|
||
|
||
blockChunksProto :: forall e m . ( MonadIO m
|
||
, Response e (BlockChunks e) m
|
||
, Pretty (Peer e)
|
||
)
|
||
=> BlockChunksI e m
|
||
-> BlockChunks e
|
||
-> m ()
|
||
|
||
blockChunksProto adapter (BlockChunks c p) =
|
||
case p of
|
||
BlockGetAllChunks h size -> deferred proto do
|
||
bsz <- blkSize adapter h
|
||
|
||
let offsets' = calcChunks (fromJust bsz) (fromIntegral size) :: [(Offset, Size)]
|
||
let offsets = zip offsets' [0..]
|
||
|
||
for_ offsets $ \((o,sz),i) -> do
|
||
chunk <- blkChunk adapter h o sz
|
||
maybe (pure ()) (response_ . BlockChunk @e i) chunk
|
||
|
||
BlockChunk n bs -> do
|
||
who <- thatPeer proto
|
||
h <- blkGetHash adapter (who, c)
|
||
|
||
maybe1 h (response_ (BlockLost @e)) $ \hh -> do
|
||
blkAcceptChunk adapter (c, who, hh, n, bs)
|
||
|
||
BlockNoChunks {} -> do
|
||
-- TODO: notification
|
||
pure ()
|
||
|
||
BlockLost{} -> do
|
||
pure ()
|
||
|
||
where
|
||
proto = Proxy @(BlockChunks e)
|
||
response_ pt = response (BlockChunks c pt)
|
||
|
||
data Fake
|
||
|
||
instance HasPeer Fake where
|
||
newtype instance Peer Fake = FakePeer Word8
|
||
deriving newtype (Hashable,Num,Enum,Real,Integral)
|
||
deriving stock (Eq,Ord,Show)
|
||
|
||
|
||
instance Pretty (Peer Fake) where
|
||
pretty (FakePeer n) = parens ("peer" <+> pretty n)
|
||
|
||
|
||
instance HasProtocol Fake (BlockSize Fake) where
|
||
type instance ProtocolId (BlockSize Fake) = 1
|
||
type instance Encoded Fake = ByteString
|
||
decode = either (const Nothing) Just . deserialiseOrFail
|
||
encode = serialise
|
||
|
||
instance HasProtocol Fake (BlockChunks Fake) where
|
||
type instance ProtocolId (BlockChunks Fake) = 2
|
||
type instance Encoded Fake = ByteString
|
||
decode = either (const Nothing) Just . deserialiseOrFail
|
||
encode = serialise
|
||
|
||
main :: IO ()
|
||
main = do
|
||
hSetBuffering stderr LineBuffering
|
||
test1
|
||
|
||
-- defaultMain $
|
||
-- testGroup "root"
|
||
-- [
|
||
-- testCase "test1" test1
|
||
-- ]
|
||
|
||
|
||
emptySessions :: IO (Sessions e)
|
||
emptySessions =
|
||
Sessions <$> Cache.newCache (Just defCookieTimeout)
|
||
<*> Cache.newCache (Just defBlockInfoTimeout)
|
||
<*> Cache.newCache (Just defBlockInfoTimeout)
|
||
|
||
newSession :: (Eq k, Hashable k,MonadIO m)
|
||
=> s
|
||
-> Getting (Cache k v) s (Cache k v)
|
||
-> k
|
||
-> v
|
||
-> m ()
|
||
|
||
newSession se l k v = do
|
||
let cache = view l se
|
||
liftIO $ Cache.insert cache k v
|
||
|
||
getSession' se l k fn = do
|
||
let cache = view l se
|
||
liftIO $ Cache.lookup cache k <&> fmap fn
|
||
|
||
getSession se l k = getSession' se l k id
|
||
|
||
updSession se def l k fn = liftIO do
|
||
let cache = view l se
|
||
v <- Cache.fetchWithCache cache k (const $ pure def)
|
||
Cache.insert cache k (fn v)
|
||
|
||
delSession se l k = liftIO do
|
||
Cache.delete (view l se) k
|
||
|
||
runFakePeer :: forall e . e ~ Fake => Sessions e -> EngineEnv e -> IO ()
|
||
runFakePeer se env = do
|
||
|
||
let pid = fromIntegral (hash (env ^. self)) :: Word8
|
||
|
||
dir <- canonicalizePath ( ".peers" </> show pid)
|
||
|
||
let chDir = dir </> "tmp-chunks"
|
||
|
||
createDirectoryIfMissing True dir
|
||
|
||
let opts = [ StoragePrefix dir
|
||
]
|
||
|
||
storage <- simpleStorageInit opts :: IO (SimpleStorage HbSync)
|
||
|
||
w <- async $ simpleStorageWorker storage
|
||
|
||
cww <- newChunkWriterIO storage (Just chDir)
|
||
|
||
cw <- async $ runChunkWriter cww
|
||
|
||
let size = 1024*1024
|
||
|
||
let blk = B8.concat [ fromString (take 1 $ show x)
|
||
| x <- replicate size (fromIntegral pid :: Int)
|
||
]
|
||
|
||
root <- putAsMerkle storage blk
|
||
|
||
debug $ "I'm" <+> pretty pid <+> pretty root
|
||
|
||
let handleBlockInfo (p, h, sz') = do
|
||
maybe1 sz' (pure ()) $ \sz -> do
|
||
let bsz = fromIntegral sz
|
||
|
||
-- here we cache block size information
|
||
updSession se mempty sBlockSizes h (Map.insert p bsz)
|
||
updSession se bsz sBlockSize h (const bsz)
|
||
|
||
debug $ pretty p <+> "has block" <+> pretty h <+> pretty sz'
|
||
|
||
let adapter =
|
||
BlockChunksI
|
||
{ blkSize = hasBlock storage
|
||
, blkChunk = getChunk storage
|
||
, blkGetHash = \c -> getSession' se sBlockDownload c (view sBlockHash) --(\BlockDownload{} -> error "AAA")
|
||
|
||
-- КАК ТОЛЬКО ПРИНЯЛИ ВСЕ ЧАНКИ (ПРИШЁЛ ПОСЛЕДНИЙ ЧАНК):
|
||
-- СЧИТАЕМ ХЭШ ТОГО, ЧТО ПОЛУЧИЛОСЬ
|
||
-- ЕСЛИ ПОЛУЧИЛОСЬ ХОРОШО --- ТО:
|
||
-- ПЕРЕЗАПИСЫВАЕМ БЛОК В СТОРЕЙДЖ
|
||
-- ГОВОРИМ ОЖИДАЮЩЕЙ СТОРОНЕ, ЧТО БЛОК ПРИНЯТ?
|
||
-- УДАЛЯЕМ КУКУ?
|
||
, blkAcceptChunk = \(c,p,h,n,bs) -> void $ runMaybeT $ do
|
||
|
||
let def = newBlockDownload h
|
||
let cKey = (p,c)
|
||
|
||
let bslen = fromIntegral $ B8.length bs
|
||
-- TODO: log this situation
|
||
mbSize <- MaybeT $ getSession' se sBlockSizes h (Map.lookup p) <&> fromMaybe Nothing
|
||
mbChSize <- MaybeT $ getSession' se sBlockDownload cKey (view sBlockChunkSize)
|
||
|
||
let offset = fromIntegral n * fromIntegral mbChSize :: Offset
|
||
|
||
updSession se def sBlockDownload cKey (over sBlockOffset (max offset))
|
||
|
||
liftIO $ do
|
||
writeChunk cww cKey h offset bs
|
||
updSession se def sBlockDownload cKey (over sBlockWritten (+bslen))
|
||
|
||
maxOff <- MaybeT $ getSession' se sBlockDownload cKey (view sBlockOffset)
|
||
written <- MaybeT $ getSession' se sBlockDownload cKey (view sBlockWritten)
|
||
|
||
let mbDone = (maxOff + fromIntegral mbChSize) > fromIntegral mbSize
|
||
&& written >= mbSize
|
||
|
||
when mbDone $ lift do
|
||
deferred (Proxy @(BlockChunks e)) $ do
|
||
h1 <- liftIO $ getHash cww cKey h
|
||
|
||
-- ПОСЧИТАТЬ ХЭШ
|
||
-- ЕСЛИ СОШЁЛСЯ - ФИНАЛИЗИРОВАТЬ БЛОК
|
||
-- ЕСЛИ НЕ СОШЁЛСЯ - ТО ПОДОЖДАТЬ ЕЩЕ
|
||
when ( h1 == h ) $ do
|
||
debug $ "THIS BLOCK IS DEFINITELY DONE" <+> pretty h1
|
||
liftIO $ commitBlock cww cKey h
|
||
|
||
when (written > mbSize * defBlockDownloadThreshold) $ do
|
||
debug $ "SESSION DELETED BECAUSE THAT PEER IS JERK:" <+> pretty p
|
||
delSession se sBlockDownload cKey
|
||
-- ЕСЛИ ТУТ ВИСЕТЬ ДОЛГО, ТО НАС МОЖНО ДИДОСИТЬ,
|
||
-- ПОСЫЛАЯ НЕ ВСЕ БЛОКИ ЧАНКА ИЛИ ПОСЫЛАЯ ОТДЕЛЬНЫЕ
|
||
-- ЧАНКИ, ПО МНОГУ РАЗ. А МЫ БУДЕМ ХЭШИ СЧИТАТЬ.
|
||
-- ТАК НЕ ПОЙДЕТ
|
||
-- ТАК ЧТО ТУТ ЖДЁМ, ДОПУСТИМ 2*mbSize и отваливаемся
|
||
}
|
||
|
||
runPeer env
|
||
[ makeResponse (blockSizeProto (hasBlock storage) handleBlockInfo)
|
||
, makeResponse (blockChunksProto adapter)
|
||
]
|
||
|
||
simpleStorageStop storage
|
||
|
||
stopChunkWriter cww
|
||
|
||
pause ( 0.25 :: Timeout 'Seconds)
|
||
|
||
mapM_ cancel [w,cw]
|
||
|
||
|
||
test1 :: IO ()
|
||
test1 = do
|
||
|
||
hSetBuffering stderr LineBuffering
|
||
|
||
fake <- newFakeP2P True
|
||
|
||
let peers@[p0,p1] = [0..1] :: [Peer Fake]
|
||
|
||
envs@[e0,e1] <- forM peers $ \p -> newEnv p fake
|
||
|
||
mtS <- emptySessions @Fake
|
||
let ee = zip (repeat mtS) envs
|
||
|
||
void $ race (pause (2 :: Timeout 'Seconds)) $ do
|
||
|
||
peerz <- mapM (async . uncurry runFakePeer) ee
|
||
|
||
runEngineM e0 $ do
|
||
request p1 (GetBlockSize @Fake (fromString "81JeD7LNR6Q7RYfyWBxfjJn1RsWzvegkUXae6FUNgrMZ"))
|
||
request p1 (GetBlockSize @Fake (fromString "5KP4vM6RuEX6RA1ywthBMqZV5UJDLANC17UrF6zuWdRt"))
|
||
|
||
request p0 (GetBlockSize @Fake (fromString "81JeD7LNR6Q7RYfyWBxfjJn1RsWzvegkUXae6FUNgrMZ"))
|
||
request p0 (GetBlockSize @Fake (fromString "5KP4vM6RuEX6RA1ywthBMqZV5UJDLANC17UrF6zuWdRt"))
|
||
|
||
let h = fromString "5KP4vM6RuEX6RA1ywthBMqZV5UJDLANC17UrF6zuWdRt"
|
||
|
||
-- TODO: generate unique cookie!!
|
||
--
|
||
-- FIXME: withAllCrap $ do ...
|
||
let s0 = (fst . head) ee
|
||
let cKey@(_, cookie) = (p1, 0) -- <<~~~ FIXME: generate a good session id!
|
||
let chsz = defChunkSize
|
||
let def = newBlockDownload h
|
||
updSession s0 def sBlockDownload cKey (set sBlockChunkSize chsz)
|
||
|
||
request p1 (BlockChunks @Fake cookie (BlockGetAllChunks h chsz))
|
||
|
||
pure ()
|
||
|
||
|
||
pause ( 1 :: Timeout 'Seconds)
|
||
|
||
mapM_ cancel peerz
|
||
|
||
(_, e) <- waitAnyCatchCancel peerz
|
||
|
||
debug (pretty $ show e)
|
||
debug "we're done"
|
||
assertBool "success" True
|
||
exitSuccess
|
||
|
||
assertBool "failed" False
|
||
|