mirror of https://github.com/voidlizard/hbs2
682 lines
19 KiB
Haskell
682 lines
19 KiB
Haskell
{-# OPTIONS_GHC -fno-warn-orphans #-}
|
|
{-# Language UndecidableInstances #-}
|
|
{-# Language AllowAmbiguousTypes #-}
|
|
module BlockDownloadNew where
|
|
|
|
import HBS2.Prelude.Plated
|
|
import HBS2.Clock
|
|
import HBS2.OrDie
|
|
import HBS2.Data.Detect
|
|
import HBS2.Hash
|
|
import HBS2.Merkle
|
|
import HBS2.Defaults
|
|
import HBS2.Events
|
|
import HBS2.Net.Proto.Service
|
|
import HBS2.Net.Proto.Sessions
|
|
|
|
|
|
import HBS2.Base58
|
|
import HBS2.Data.Types.Peer
|
|
import HBS2.Data.Types.Refs
|
|
import HBS2.Actors.Peer
|
|
import HBS2.Peer.Proto.Peer
|
|
import HBS2.Peer.Proto.BlockInfo
|
|
import HBS2.Peer.Proto.BlockChunks
|
|
import HBS2.Peer.Brains
|
|
import HBS2.Storage
|
|
import HBS2.Storage.Operations.Missed
|
|
import HBS2.Misc.PrettyStuff
|
|
import HBS2.Clock
|
|
import HBS2.Net.Auth.Schema
|
|
|
|
import HBS2.Peer.RPC.Internal.Types
|
|
import HBS2.Peer.RPC.API.Peer
|
|
|
|
import HBS2.Net.Messaging.TCP
|
|
|
|
import PeerTypes
|
|
import PeerInfo
|
|
|
|
import Control.Monad.Trans.Maybe
|
|
import Control.Monad.Trans.Cont
|
|
import Control.Concurrent.STM (flushTQueue,retry)
|
|
import Data.Map qualified as Map
|
|
import Data.Map (Map)
|
|
import Data.HashMap.Strict (HashMap)
|
|
import Data.HashMap.Strict qualified as HM
|
|
import Data.HashSet (HashSet)
|
|
import Data.HashSet qualified as HS
|
|
import Data.IntMap qualified as IntMap
|
|
import Data.IntMap (IntMap)
|
|
import Data.List.Split qualified as Split
|
|
import Data.Text qualified as Text
|
|
import Data.Either
|
|
import Data.Maybe
|
|
import Data.ByteString.Lazy qualified as LBS
|
|
import Data.ByteString.Lazy (ByteString)
|
|
import Data.ByteString qualified as BS
|
|
import Data.List qualified as L
|
|
import Data.Coerce
|
|
import Numeric
|
|
import UnliftIO
|
|
import UnliftIO.Concurrent
|
|
import Lens.Micro.Platform
|
|
import Streaming.Prelude qualified as S
|
|
|
|
|
|
data DownloadError e =
|
|
DownloadStuckError HashRef (Peer e)
|
|
| StorageError
|
|
| UnknownPeerError (Peer e)
|
|
| InternalError Int
|
|
| PeerMissBlockError HashRef (Peer e)
|
|
| PeerBlockHashMismatch (Peer e)
|
|
| PeerRequestTimeout (Peer e)
|
|
| Incomplete HashRef
|
|
deriving stock (Generic,Typeable)
|
|
|
|
instance Pretty (Peer e) => Show (DownloadError e) where
|
|
show (DownloadStuckError h p) = show $ parens $ "DownloadStuck" <+> pretty h <+> pretty p
|
|
show (UnknownPeerError p) = show $ parens $ "UnknownPeerError" <+> pretty p
|
|
show (PeerMissBlockError h p) = show $ parens $ "PeerMissBlockError" <+> pretty h <+> pretty p
|
|
show (PeerRequestTimeout p) = show $ parens $ "PeerRequestTimeout" <+> pretty p
|
|
show (PeerBlockHashMismatch p) = show $ parens $ "PeerBlockHashMismatch" <+> pretty p
|
|
show StorageError = show "StorageError"
|
|
show (InternalError n) = show $ parens "InternalError" <+> pretty n
|
|
show (Incomplete h) = show $ parens "Incomplete" <+> pretty h
|
|
|
|
instance (Typeable e, Pretty (Peer e)) => Exception (DownloadError e)
|
|
|
|
|
|
class BlockSizeCache e cache where
|
|
|
|
cacheBlockSize :: forall m . MonadUnliftIO m
|
|
=> cache
|
|
-> PubKey 'Sign (Encryption e)
|
|
-> Hash HbSync
|
|
-> Integer
|
|
-> m ()
|
|
|
|
findBlockSize :: forall m . MonadUnliftIO m
|
|
=> cache
|
|
-> PubKey 'Sign (Encryption e)
|
|
-> Hash HbSync
|
|
-> m (Maybe Integer)
|
|
|
|
instance BlockSizeCache e () where
|
|
cacheBlockSize _ _ _ _ = pure ()
|
|
findBlockSize _ _ _ = pure Nothing
|
|
|
|
instance BlockSizeCache e (SomeBrains e) where
|
|
cacheBlockSize = brainsCacheBlockSize @e
|
|
findBlockSize = brainsFindBlockSize @e
|
|
|
|
queryBlockSizeFromPeer :: forall e cache m . ( e ~ L4Proto
|
|
, MonadUnliftIO m
|
|
, BlockSizeCache e cache
|
|
)
|
|
=> cache
|
|
-> PeerEnv e
|
|
-> Hash HbSync
|
|
-> Peer e
|
|
-> m (Either (DownloadError e) (Maybe Integer))
|
|
|
|
queryBlockSizeFromPeer cache e h peer = do
|
|
|
|
what <- try @_ @(DownloadError e) $ liftIO $ withPeerM e do
|
|
|
|
flip runContT pure $ callCC \exit -> do
|
|
|
|
PeerData{..} <- lift $ find (KnownPeerKey peer) id
|
|
>>= orThrow (UnknownPeerError peer)
|
|
|
|
s <- lift $ findBlockSize @e cache _peerSignKey h
|
|
|
|
debug $ "FOUND CACHED VALUE" <+> pretty h <+> pretty s
|
|
|
|
maybe none (exit . Just) s
|
|
|
|
lift do
|
|
|
|
sizeQ <- newTQueueIO
|
|
|
|
subscribe @e (BlockSizeEventKey peer) $ \case
|
|
BlockSizeEvent (that, hx, sz) | hx == h -> do
|
|
atomically $ writeTQueue sizeQ (Just sz)
|
|
cacheBlockSize @e cache _peerSignKey h sz
|
|
|
|
_ -> do
|
|
atomically $ writeTQueue sizeQ Nothing
|
|
|
|
request peer (GetBlockSize @e h)
|
|
|
|
race ( pause defBlockInfoTimeout ) (atomically $ readTQueue sizeQ )
|
|
>>= orThrow (PeerRequestTimeout peer)
|
|
|
|
case what of
|
|
Left{} -> pure $ Left (PeerRequestTimeout peer)
|
|
Right x -> pure (Right x)
|
|
|
|
|
|
data BurstMachine =
|
|
BurstMachine
|
|
{ _buTimeout :: Double
|
|
, _buBurstMax :: Int
|
|
, _buStepUp :: Double
|
|
, _buStepDown :: Double
|
|
, _buCurrent :: TVar Double
|
|
, _buErrors :: TVar Int
|
|
}
|
|
|
|
burstMachineAddErrors :: MonadUnliftIO m => BurstMachine -> Int -> m ()
|
|
burstMachineAddErrors BurstMachine{..} n =
|
|
atomically $ modifyTVar _buErrors (+n)
|
|
|
|
newBurstMachine :: MonadUnliftIO m
|
|
=> Double -- ^ timeout
|
|
-> Int -- ^ max burst
|
|
-> Maybe Int -- ^ start burst
|
|
-> Double -- ^ step up
|
|
-> Double -- ^ step down
|
|
-> m BurstMachine
|
|
|
|
newBurstMachine t0 buMax buStart up' down' = do
|
|
BurstMachine t0 buMax up down
|
|
<$> newTVarIO bu0
|
|
<*> newTVarIO 0
|
|
|
|
where
|
|
bu0 = realToFrac $ fromMaybe (max 2 (buMax `div` 2)) buStart
|
|
down = min 0.85 down'
|
|
up = min 0.5 up'
|
|
|
|
getCurrentBurst :: MonadUnliftIO m => BurstMachine -> m Int
|
|
getCurrentBurst BurstMachine{..} = readTVarIO _buCurrent <&> round
|
|
|
|
runBurstMachine :: MonadUnliftIO m
|
|
=> BurstMachine
|
|
-> m ()
|
|
|
|
runBurstMachine BurstMachine{..} = do
|
|
|
|
|
|
bu0 <- readTVarIO _buCurrent <&> realToFrac
|
|
let buMax = realToFrac _buBurstMax
|
|
let down = _buStepDown
|
|
let up = _buStepUp
|
|
|
|
_dEdT <- newTVarIO 0.00
|
|
|
|
_rates <- newTVarIO (mempty :: Map Double Double)
|
|
|
|
_buMaxReal <- newTVarIO buMax
|
|
|
|
pause @'Seconds (realToFrac _buTimeout)
|
|
|
|
flip runContT pure do
|
|
|
|
void $ ContT $ withAsync do
|
|
forever do
|
|
pause @'Seconds (realToFrac _buTimeout * 10)
|
|
|
|
atomically do
|
|
e <- headDef bu0 . Map.elems <$> readTVar _rates
|
|
nrates <- readTVar _rates <&> take 100 . Map.toList
|
|
writeTVar _rates (Map.fromList nrates)
|
|
modifyTVar _buMaxReal (max e)
|
|
|
|
void $ ContT $ withAsync do
|
|
forever do
|
|
pause @'Seconds 600
|
|
atomically $ writeTVar _buMaxReal buMax
|
|
|
|
|
|
void $ ContT $ withAsync do
|
|
forever do
|
|
pause @'Seconds (realToFrac _buTimeout * 2.0)
|
|
ddt <- readTVarIO _dEdT
|
|
|
|
when (ddt <= 0) do
|
|
atomically do
|
|
buMaxReal <- readTVar _buMaxReal
|
|
current <- readTVar _buCurrent
|
|
let new = min buMaxReal (current * (1.0 + up))
|
|
writeTVar _buCurrent new
|
|
|
|
flip fix 0 $ \next e1 -> do
|
|
|
|
let dt = realToFrac _buTimeout
|
|
|
|
eNew <- atomically do
|
|
|
|
e2 <- readTVar _buErrors
|
|
current <- readTVar _buCurrent
|
|
|
|
new <- if e2 > e1 then do
|
|
let d = max 2.0 (current * (1.0 - down))
|
|
nrates <- readTVar _rates <&> drop 3 . Map.toList
|
|
let newFucked = maybe d snd (headMay nrates)
|
|
writeTVar _rates (Map.fromList nrates)
|
|
pure newFucked
|
|
|
|
else
|
|
pure current -- $ min buMaxReal (current * (1.0 + up))
|
|
|
|
writeTVar _buErrors 0
|
|
writeTVar _buCurrent new
|
|
|
|
let dedt = realToFrac (e2 - e1) / realToFrac dt
|
|
|
|
writeTVar _dEdT (realToFrac dedt)
|
|
|
|
modifyTVar _rates ( Map.insertWith max dedt current )
|
|
|
|
pure e2
|
|
|
|
pause @'Seconds dt
|
|
next eNew
|
|
|
|
data S =
|
|
SInit
|
|
| SFetchQ
|
|
| SFetchPost (Hash HbSync) ByteString
|
|
| SCheckBefore
|
|
| SCheckAfter
|
|
|
|
-- | downloads block with dependencies recursively
|
|
downloadFromPeerRec :: forall e t cache m . ( e ~ L4Proto
|
|
, MonadUnliftIO m
|
|
, IsTimeout t
|
|
, BlockSizeCache e cache
|
|
)
|
|
=> Timeout t
|
|
-> Int
|
|
-> cache
|
|
-> PeerEnv e
|
|
-> Hash HbSync
|
|
-> Peer e
|
|
-> m (Either (DownloadError e) ())
|
|
|
|
downloadFromPeerRec t bu0 cache env h0 peer = do
|
|
|
|
sto <- withPeerM env getStorage
|
|
|
|
p <- newTQueueIO
|
|
q <- newTQueueIO
|
|
qq <- newTQueueIO
|
|
toq <- newTVarIO ( mempty :: [Int] )
|
|
|
|
bm <- newBurstMachine 0.5 256 (Just bu0) 0.05 0.10
|
|
|
|
flip runContT pure do
|
|
|
|
ContT $ withAsync $ forever do
|
|
join $ atomically (readTQueue p)
|
|
|
|
ContT $ withAsync $ forever do
|
|
h <- atomically (readTQueue qq)
|
|
void $ queryBlockSizeFromPeer cache env h peer
|
|
pause @'Seconds 1.5
|
|
|
|
ContT $ withAsync $ flip fix 10000000 $ \next m0 -> do
|
|
txs <- readTVarIO toq <&> L.take 1000
|
|
let m1 = fromMaybe m0 $ median txs
|
|
when ( m1 > m0 ) $ burstMachineAddErrors bm 1
|
|
pause @'Seconds 3
|
|
next m1
|
|
|
|
ContT $ withAsync $ runBurstMachine bm
|
|
|
|
flip fix SInit $ \next -> \case
|
|
|
|
SInit -> do
|
|
debug "SInit"
|
|
atomically $ writeTQueue q h0
|
|
next SCheckBefore
|
|
|
|
SCheckBefore -> do
|
|
here <- hasBlock sto h0 <&> isJust
|
|
if here then next SCheckAfter else next SFetchQ
|
|
|
|
SFetchQ -> do
|
|
debug "SFetchQ"
|
|
|
|
done <- atomically do
|
|
pe <- isEmptyTQueue p
|
|
qe <- isEmptyTQueue q
|
|
when (qe && not pe) retry
|
|
-- when (not pe) retry
|
|
pure qe
|
|
|
|
if done then
|
|
next SCheckAfter
|
|
else do
|
|
|
|
h <- atomically $ readTQueue q
|
|
mbs <- getBlock sto h
|
|
|
|
case mbs of
|
|
Just bs -> next (SFetchPost h bs)
|
|
Nothing -> none
|
|
|
|
bu <- lift $ getCurrentBurst bm
|
|
|
|
t0 <- getTimeCoarse
|
|
w <- lift $ downloadFromPeer t bu cache env (coerce h) peer
|
|
t1 <- getTimeCoarse
|
|
let dt = toMicroSeconds $ TimeoutTS (t1 - t0)
|
|
atomically $ modifyTVar toq ( dt : )
|
|
|
|
case w of
|
|
Right bs -> do
|
|
next (SFetchPost h bs)
|
|
|
|
Left e -> do
|
|
lift $ burstMachineAddErrors bm 1
|
|
err $ "DOWNLOAD ERROR" <+> viaShow e
|
|
next SFetchQ
|
|
|
|
SFetchPost h bs -> do
|
|
debug $ "SFetchPost" <+> pretty h
|
|
|
|
let parse = do
|
|
let refs = extractBlockRefs h bs
|
|
atomically $ mapM_ (writeTQueue q . coerce) refs
|
|
mapM_ (atomically . writeTQueue qq . coerce) refs
|
|
|
|
atomically $ writeTQueue p parse
|
|
|
|
next SFetchQ
|
|
|
|
SCheckAfter -> do
|
|
debug "SCheckAfter"
|
|
missed <- findMissedBlocks sto (HashRef h0)
|
|
mapM_ (atomically . writeTQueue q . coerce) missed
|
|
mapM_ (atomically . writeTQueue qq . coerce) missed
|
|
unless (L.null missed) $ next SFetchQ
|
|
|
|
pure $ Right ()
|
|
|
|
downloadFromPeer :: forall e t cache m . ( e ~ L4Proto
|
|
, MonadUnliftIO m
|
|
, IsTimeout t
|
|
, BlockSizeCache e cache
|
|
)
|
|
=> Timeout t
|
|
-> Int
|
|
-> cache
|
|
-> PeerEnv e
|
|
-> Hash HbSync
|
|
-> Peer e
|
|
-> m (Either (DownloadError e) ByteString)
|
|
|
|
downloadFromPeer t bu cache env h peer = liftIO $ withPeerM env do
|
|
|
|
pd@PeerData{..} <- find (KnownPeerKey peer) id
|
|
>>= orThrow (UnknownPeerError peer)
|
|
|
|
pinfo <- find (PeerInfoKey peer) id
|
|
>>= orThrow (UnknownPeerError peer)
|
|
|
|
rtt <- liftIO $ medianPeerRTT pinfo
|
|
<&> fmap ((*1) . realToFrac)
|
|
<&> fromMaybe 1000
|
|
<&> (/1e6)
|
|
|
|
let waity = 10 * rtt
|
|
|
|
sto <- getStorage
|
|
|
|
let chunkSize = defChunkSize
|
|
|
|
flip runContT pure $ callCC \exit -> do
|
|
|
|
size <- lift (findBlockSize @e cache _peerSignKey h)
|
|
>>= maybe (queryBlockSize exit) pure
|
|
|
|
coo <- genCookie (peer,h)
|
|
let key = DownloadSessionKey (peer, coo)
|
|
down@BlockDownload{..} <- newBlockDownload h
|
|
let chuQ = _sBlockChunks
|
|
let new = set sBlockChunkSize chunkSize
|
|
. set sBlockSize (fromIntegral size)
|
|
$ down
|
|
|
|
lift $ update @e new key id
|
|
|
|
let offsets = calcChunks size (fromIntegral chunkSize) :: [(Offset, Size)]
|
|
|
|
let chunkNums = [ 0 .. pred (length offsets) ]
|
|
|
|
let bursts = calcBursts bu chunkNums
|
|
|
|
callCC $ \exit2 -> do
|
|
|
|
_wx <- newTVarIO waity
|
|
|
|
for_ bursts $ \(i,chunkN) -> do
|
|
|
|
-- atomically $ flushTQueue chuQ
|
|
|
|
let req = BlockChunks @e coo (BlockGetChunks h chunkSize (fromIntegral i) (fromIntegral chunkN))
|
|
|
|
lift $ request peer req
|
|
|
|
t0 <- getTimeCoarse
|
|
|
|
let watchdog = fix \next -> do
|
|
wx <- readTVarIO _wx <&> realToFrac
|
|
-- debug $ "WATCHDOG" <+> pretty wx <+> pretty waity
|
|
r <- race (pause @'MilliSeconds (min wx waity)) do
|
|
void $ atomically $ readTQueue chuQ
|
|
either (const none) (const next) r
|
|
|
|
r <- liftIO $ race watchdog do
|
|
|
|
atomically do
|
|
pieces <- readTVar _sBlockChunks2
|
|
let done = and [ IntMap.member j pieces | j <- [i .. i + chunkN-1] ]
|
|
unless done retry
|
|
|
|
atomically $ flushTQueue chuQ
|
|
|
|
t1 <- getTimeCoarse
|
|
|
|
atomically do
|
|
wx0 <- readTVar _wx
|
|
let wx1 = realToFrac (t1 - t0) * 100 / 1e6 -- millis
|
|
writeTVar _wx wx1
|
|
|
|
case r of
|
|
Left{} -> exit2 (Left $ DownloadStuckError (HashRef h) peer)
|
|
_ -> pure ()
|
|
|
|
|
|
blk <- readTVarIO _sBlockChunks2
|
|
let rs = LBS.concat $ IntMap.elems blk
|
|
|
|
ha <- putBlock sto rs
|
|
|
|
-- let ha = Just $ hashObject @HbSync rs
|
|
|
|
lift $ expire @e key
|
|
|
|
case ha of
|
|
Nothing -> pure $ Left StorageError
|
|
|
|
Just h1 | h1 == h -> do
|
|
pure $ Right rs
|
|
|
|
Just h1 -> do
|
|
delBlock sto h1
|
|
pure $ Left (PeerBlockHashMismatch peer)
|
|
|
|
where
|
|
|
|
queryBlockSize exit = do
|
|
what <- lift $ queryBlockSizeFromPeer cache env h peer
|
|
case what of
|
|
Left{} -> exit (Left (PeerRequestTimeout peer))
|
|
Right Nothing -> exit (Left (PeerMissBlockError (HashRef h) peer))
|
|
Right (Just s) -> pure s
|
|
|
|
|
|
|
|
data S1 =
|
|
S1Init
|
|
| S1QuerySize (Hash HbSync)
|
|
| S1CheckMissed (Hash HbSync)
|
|
|
|
downloadDispatcher :: forall e m . ( e ~ L4Proto
|
|
, MonadUnliftIO m
|
|
)
|
|
=> SomeBrains e
|
|
-> PeerEnv e
|
|
-> m ()
|
|
downloadDispatcher brains env = flip runContT pure do
|
|
|
|
pts <- newTVarIO ( mempty :: HashMap (Peer e) (Async ()) )
|
|
down <- newTVarIO ( mempty :: HashMap (Peer e) (HashMap (Hash HbSync) Integer) )
|
|
use <- newTVarIO ( mempty :: HashMap (Hash HbSync) Integer )
|
|
|
|
rq <- newTQueueIO
|
|
|
|
sto <- withPeerM env getStorage
|
|
|
|
work <- newTQueueIO
|
|
|
|
ContT $ bracket none $ const do
|
|
readTVarIO pts >>= mapM_ cancel
|
|
atomically $ writeTVar pts mempty
|
|
|
|
ContT $ withAsync $ forever do
|
|
join $ atomically (readTQueue work)
|
|
|
|
liftIO $ withPeerM env do
|
|
subscribe @e DownloadReqKey $ \(DownloadReqData h) -> do
|
|
debug $ green "Download request" <+> pretty h
|
|
let w = do
|
|
-- here <- hasBlock sto h <&> isJust
|
|
-- let hs = if not here then [h] else mempty
|
|
-- missed <- findMissedBlocks sto (HashRef h)
|
|
-- for_ ( hs <> fmap coerce missed ) $ \hx -> do
|
|
atomically $ writeTQueue rq h
|
|
-- pause @'Seconds 0.01
|
|
|
|
atomically $ writeTQueue work w
|
|
|
|
ContT $ withAsync (manageThreads pts down use)
|
|
ContT $ withAsync (sizeQueryLoop pts rq down)
|
|
|
|
forever do
|
|
pause @'Seconds 10
|
|
debug $ yellow $ "I'm download dispatcher"
|
|
u <- readTVarIO use <&> length . HM.keys
|
|
d <- readTVarIO down <&> HS.size . HS.unions . fmap HM.keysSet . HM.elems
|
|
debug $ yellow $ "wip:" <+> pretty d
|
|
|
|
where
|
|
|
|
manageThreads pts down use = withPeerM env $ forever do
|
|
pips <- getKnownPeers @e <&> HS.fromList
|
|
|
|
for_ pips $ \p -> do
|
|
here <- readTVarIO pts <&> HM.member p
|
|
unless here do
|
|
a <- async $ peerDownloadLoop env p down use
|
|
atomically $ modifyTVar pts (HM.insert p a)
|
|
|
|
debug $ "downloadDispatcher: knownPeer" <+> yellow (pretty p)
|
|
|
|
dead <- atomically do
|
|
total <- readTVar pts <&> HM.toList
|
|
|
|
what <- for total $ \(p,a) -> do
|
|
let pipExist = HS.member p pips
|
|
stillAlive <- pollSTM a <&> isNothing
|
|
|
|
if pipExist && stillAlive then do
|
|
pure $ Right (p,a)
|
|
else
|
|
pure $ Left (p,a)
|
|
|
|
writeTVar pts (HM.fromList (rights what))
|
|
pure $ lefts what
|
|
|
|
for_ dead $ \(p,a) -> do
|
|
cancel a
|
|
debug $ red "terminating peer loop" <+> pretty p
|
|
|
|
pause @'Seconds 5
|
|
|
|
sizeQueryLoop pts rq down = flip runContT pure do
|
|
sto <- withPeerM env getStorage
|
|
wip <- newTVarIO ( mempty :: HashMap (Hash HbSync) NominalDiffTime )
|
|
|
|
void $ ContT $ withAsync $ replicateM_ 4 do
|
|
flip fix S1Init $ \next -> \case
|
|
S1Init -> do
|
|
|
|
w <- atomically $ readTQueue rq
|
|
here <- hasBlock sto w <&> isJust
|
|
|
|
if not here then
|
|
next (S1QuerySize w)
|
|
else
|
|
next (S1CheckMissed w)
|
|
|
|
S1QuerySize h -> do
|
|
debug $ "QUERY SIZE1" <+> pretty h
|
|
atomically $ modifyTVar wip (HM.insert h 10)
|
|
next S1Init
|
|
|
|
S1CheckMissed h -> do
|
|
-- debug $ "CHECK MISSED!" <+> pretty h
|
|
next S1Init
|
|
|
|
void $ ContT $ withAsync $ forever do
|
|
pause @'Seconds 10
|
|
|
|
let blkz = readTVarIO wip <&> HM.toList
|
|
|
|
polling (Polling 1 1) blkz $ \h -> liftIO do
|
|
|
|
pips <- readTVarIO pts <&> HM.keys
|
|
|
|
forConcurrently_ pips $ \p -> do
|
|
|
|
debug $ "QUERY SIZE" <+> pretty h <+> pretty p
|
|
r <- queryBlockSizeFromPeer brains env h p
|
|
|
|
case r of
|
|
Right (Just size) -> do
|
|
atomically do
|
|
modifyTVar wip (HM.delete h)
|
|
modifyTVar down (HM.insertWith (<>) p (HM.singleton h size))
|
|
|
|
Right Nothing -> do
|
|
atomically $ modifyTVar wip (HM.adjust ((*1.10).(+60)) h)
|
|
|
|
Left{} -> do
|
|
atomically $ modifyTVar wip (HM.adjust (*1.05) h)
|
|
|
|
|
|
forever do
|
|
pause @'Seconds 10
|
|
|
|
peerDownloadLoop env p down use = forever do
|
|
debug $ "Peer download loop" <+> green (pretty p)
|
|
hh <- atomically do
|
|
u <- readTVar use
|
|
q <- readTVar down <&> HM.toList . fromMaybe mempty . HM.lookup p
|
|
let blk = headMay [ (k,v) | (k, v) <- q, fromMaybe 0 (HM.lookup k u) == 0 ]
|
|
case blk of
|
|
Just (h,size) -> do
|
|
modifyTVar use (HM.insertWith (+) h 1)
|
|
pure (h,size)
|
|
|
|
Nothing -> retry
|
|
|
|
debug $ red "START TO DOWNLOAD" <+> pretty hh <+> "FROM" <+> pretty p
|
|
|