haskoin-store-0.64.0: src/Haskoin/Store/Cache.hs
{-# LANGUAGE ApplicativeDo #-}
{-# LANGUAGE DeriveAnyClass #-}
{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE LambdaCase #-}
{-# LANGUAGE MultiWayIf #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE RecordWildCards #-}
{-# LANGUAGE TemplateHaskell #-}
{-# LANGUAGE TupleSections #-}
module Haskoin.Store.Cache
( CacheConfig(..)
, CacheMetrics
, CacheT
, CacheError(..)
, newCacheMetrics
, withCache
, connectRedis
, blockRefScore
, scoreBlockRef
, CacheWriter
, CacheWriterInbox
, cacheNewBlock
, cacheNewTx
, cacheWriter
, cacheDelXPubs
, isInCache
) where
import Control.DeepSeq (NFData)
import Control.Monad (forM, forM_, forever, guard,
unless, void, when)
import Control.Monad.Logger (MonadLoggerIO, logDebugS,
logErrorS, logInfoS, logWarnS)
import Control.Monad.Reader (ReaderT (..), ask, asks)
import Control.Monad.Trans (lift)
import Control.Monad.Trans.Maybe (MaybeT (..), runMaybeT)
import Data.Bits (complement, shift, (.&.), (.|.))
import Data.ByteString (ByteString)
import qualified Data.ByteString as B
import Data.Default (def)
import Data.Either (fromRight, isRight, rights)
import Data.HashMap.Strict (HashMap)
import qualified Data.HashMap.Strict as HashMap
import Data.HashSet (HashSet)
import qualified Data.HashSet as HashSet
import qualified Data.IntMap.Strict as I
import Data.List (sort)
import qualified Data.Map.Strict as Map
import Data.Maybe (catMaybes, fromMaybe, isJust,
isNothing, mapMaybe)
import Data.Serialize (Serialize, decode, encode)
import Data.String.Conversions (cs)
import Data.Text (Text)
import Data.Time.Clock (NominalDiffTime, diffUTCTime)
import Data.Time.Clock.System (getSystemTime, systemSeconds,
systemToUTCTime)
import Data.Word (Word32, Word64)
import Database.Redis (Connection, Redis, RedisCtx,
Reply, checkedConnect,
defaultConnectInfo, hgetall,
parseConnectInfo, zadd,
zrangeWithscores,
zrangebyscoreWithscoresLimit,
zrem)
import qualified Database.Redis as Redis
import GHC.Generics (Generic)
import Haskoin (Address, BlockHash,
BlockHeader (..), BlockNode (..),
DerivPathI (..), KeyIndex,
OutPoint (..), Tx (..), TxHash,
TxIn (..), TxOut (..), XPubKey,
blockHashToHex, derivePubPath,
eitherToMaybe, headerHash,
pathToList, scriptToAddressBS,
txHash, txHashToHex, xPubAddr,
xPubCompatWitnessAddr, xPubExport,
xPubWitnessAddr)
import Haskoin.Node (Chain, chainBlockMain,
chainGetAncestor, chainGetBest,
chainGetBlock)
import Haskoin.Store.Common
import Haskoin.Store.Data
import Haskoin.Store.Stats
import NQE (Inbox, Listen, Mailbox,
inboxToMailbox, query, receive,
send)
import qualified System.Metrics as Metrics
import qualified System.Metrics.Counter as Metrics (Counter)
import qualified System.Metrics.Counter as Metrics.Counter
import qualified System.Metrics.Distribution as Metrics (Distribution)
import qualified System.Metrics.Distribution as Metrics.Distribution
import qualified System.Metrics.Gauge as Metrics (Gauge)
import qualified System.Metrics.Gauge as Metrics.Gauge
import System.Random (randomIO, randomRIO)
import UnliftIO (Exception, MonadIO, MonadUnliftIO,
TQueue, TVar, async, atomically,
bracket, liftIO, link, modifyTVar,
newTVarIO, readTQueue, readTVar,
throwIO, wait, withAsync,
writeTQueue, writeTVar)
import UnliftIO.Concurrent (threadDelay)
runRedis :: MonadLoggerIO m => Redis (Either Reply a) -> CacheX m a
runRedis action =
asks cacheConn >>= \conn ->
liftIO (Redis.runRedis conn action) >>= \case
Right x -> return x
Left e -> do
$(logErrorS) "Cache" $ "Got error from Redis: " <> cs (show e)
throwIO (RedisError e)
data CacheConfig = CacheConfig
{ cacheConn :: !Connection
, cacheMin :: !Int
, cacheMax :: !Integer
, cacheChain :: !Chain
, cacheRetryDelay :: !Int -- microseconds
, cacheMetrics :: !(Maybe CacheMetrics)
}
data CacheMetrics = CacheMetrics
{ cacheHits :: !Metrics.Counter
, cacheMisses :: !Metrics.Counter
, cacheLockAcquired :: !Metrics.Counter
, cacheLockReleased :: !Metrics.Counter
, cacheLockFailed :: !Metrics.Counter
, cacheXPubBals :: !Metrics.Counter
, cacheXPubUnspents :: !Metrics.Counter
, cacheXPubTxs :: !Metrics.Counter
, cacheXPubTxCount :: !Metrics.Counter
, cacheIndexTime :: !StatDist
, cacheBlockSyncTime :: !StatDist
}
newCacheMetrics :: MonadIO m => Metrics.Store -> m CacheMetrics
newCacheMetrics s = liftIO $ do
cacheHits <- c "cache.hits"
cacheMisses <- c "cache.misses"
cacheLockAcquired <- c "cache.lock_acquired"
cacheLockReleased <- c "cache.lock_released"
cacheLockFailed <- c "cache.lock_failed"
cacheIndexTime <- d "cache.index"
cacheBlockSyncTime <- d "cache.block_sync"
cacheXPubBals <- c "cache.xpub_bals"
cacheXPubUnspents <- c "cache.xpub_unspents"
cacheXPubTxs <- c "cache.xpub_txs"
cacheXPubTxCount <- c "cache.xpub_tx_count"
return CacheMetrics{..}
where
c x = Metrics.createCounter x s
d x = createStatDist x s
withMetrics :: MonadUnliftIO m
=> (CacheMetrics -> StatDist)
-> CacheX m a
-> CacheX m a
withMetrics df go =
asks cacheMetrics >>= \case
Nothing -> go
Just m ->
bracket
(systemToUTCTime <$> liftIO getSystemTime)
(end m)
(const go)
where
end metrics t1 = do
t2 <- systemToUTCTime <$> liftIO getSystemTime
let diff = round $ diffUTCTime t2 t1 * 1000
df metrics `addStatTime` diff
addStatQuery (df metrics)
incrementCounter :: MonadIO m
=> (CacheMetrics -> Metrics.Counter)
-> Int
-> CacheX m ()
incrementCounter f i =
asks cacheMetrics >>= \case
Just s -> liftIO $ Metrics.Counter.add (f s) (fromIntegral i)
Nothing -> return ()
type CacheT = ReaderT (Maybe CacheConfig)
type CacheX = ReaderT CacheConfig
data CacheError = RedisError Reply
| RedisTxError !String
| LogicError !String
deriving (Show, Eq, Generic, NFData, Exception)
connectRedis :: MonadIO m => String -> m Connection
connectRedis redisurl = do
conninfo <-
if null redisurl
then return defaultConnectInfo
else case parseConnectInfo redisurl of
Left e -> error e
Right r -> return r
liftIO (checkedConnect conninfo)
instance (MonadUnliftIO m, MonadLoggerIO m, StoreReadBase m) =>
StoreReadBase (CacheT m) where
getNetwork = lift getNetwork
getBestBlock = lift getBestBlock
getBlocksAtHeight = lift . getBlocksAtHeight
getBlock = lift . getBlock
getTxData = lift . getTxData
getSpender = lift . getSpender
getBalance = lift . getBalance
getUnspent = lift . getUnspent
getMempool = lift getMempool
instance (MonadUnliftIO m , MonadLoggerIO m, StoreReadExtra m) =>
StoreReadExtra (CacheT m) where
getBalances = lift . getBalances
getAddressesTxs addrs = lift . getAddressesTxs addrs
getAddressTxs addr = lift . getAddressTxs addr
getAddressUnspents addr = lift . getAddressUnspents addr
getAddressesUnspents addrs = lift . getAddressesUnspents addrs
getMaxGap = lift getMaxGap
getInitialGap = lift getInitialGap
getNumTxData = lift . getNumTxData
xPubBals xpub =
ask >>= \case
Nothing -> lift $
xPubBals xpub
Just cfg -> lift $
runReaderT (getXPubBalances xpub) cfg
xPubUnspents xpub xbals limits =
ask >>= \case
Nothing -> lift $
xPubUnspents xpub xbals limits
Just cfg -> lift $
runReaderT (getXPubUnspents xpub xbals limits) cfg
xPubTxs xpub xbals limits =
ask >>= \case
Nothing -> lift $
xPubTxs xpub xbals limits
Just cfg -> lift $
runReaderT (getXPubTxs xpub xbals limits) cfg
xPubTxCount xpub xbals =
ask >>= \case
Nothing -> lift $
xPubTxCount xpub xbals
Just cfg -> lift $
runReaderT (getXPubTxCount xpub xbals) cfg
withCache :: StoreReadBase m => Maybe CacheConfig -> CacheT m a -> m a
withCache s f = runReaderT f s
balancesPfx :: ByteString
balancesPfx = "b"
txSetPfx :: ByteString
txSetPfx = "t"
utxoPfx :: ByteString
utxoPfx = "u"
idxPfx :: ByteString
idxPfx = "i"
getXPubTxs ::
(MonadUnliftIO m, MonadLoggerIO m, StoreReadExtra m)
=> XPubSpec -> [XPubBal] -> Limits -> CacheX m [TxRef]
getXPubTxs xpub xbals limits = go False
where
go m = isXPubCached xpub >>= \case
True -> do
txs <- cacheGetXPubTxs xpub limits
incrementCounter cacheXPubTxs (length txs)
return txs
False ->
case m of
True -> lift $ xPubTxs xpub xbals limits
False -> do
newXPubC xpub xbals
go True
getXPubTxCount :: (MonadUnliftIO m, MonadLoggerIO m, StoreReadExtra m)
=> XPubSpec -> [XPubBal] -> CacheX m Word32
getXPubTxCount xpub xbals =
go False
where
go t = isXPubCached xpub >>= \case
True -> do
incrementCounter cacheXPubTxCount 1
cacheGetXPubTxCount xpub
False ->
if t
then lift $ xPubTxCount xpub xbals
else do
newXPubC xpub xbals
go True
getXPubUnspents :: (MonadUnliftIO m, MonadLoggerIO m, StoreReadExtra m)
=> XPubSpec -> [XPubBal] -> Limits -> CacheX m [XPubUnspent]
getXPubUnspents xpub xbals limits =
go False
where
xm = let f x = (balanceAddress (xPubBal x), x)
g = (> 0) . balanceUnspentCount . xPubBal
in HashMap.fromList $ map f $ filter g xbals
go m = isXPubCached xpub >>= \case
True -> do
process
False -> case m of
True -> do
us <- lift $ xPubUnspents xpub xbals limits
return us
False -> do
newXPubC xpub xbals
go True
process = do
ops <- map snd <$> cacheGetXPubUnspents xpub limits
uns <- catMaybes <$> lift (mapM getUnspent ops)
let f u = either
(const Nothing)
(\a -> Just (a, u))
(scriptToAddressBS (unspentScript u))
g a = HashMap.lookup a xm
h u x =
XPubUnspent
{
xPubUnspent = u,
xPubUnspentPath = xPubBalPath x
}
us = mapMaybe f uns
i a u = h u <$> g a
incrementCounter cacheXPubUnspents (length us)
return $ mapMaybe (uncurry i) us
getXPubBalances :: (MonadUnliftIO m, MonadLoggerIO m, StoreReadExtra m)
=> XPubSpec -> CacheX m [XPubBal]
getXPubBalances xpub = isXPubCached xpub >>= \case
True -> do
xbals <- cacheGetXPubBalances xpub
incrementCounter cacheXPubBals (length xbals)
return xbals
False -> do
bals <- lift $ xPubBals xpub
newXPubC xpub bals
return bals
isInCache :: MonadLoggerIO m => XPubSpec -> CacheT m Bool
isInCache xpub =
ask >>= \case
Nothing -> return False
Just cfg -> runReaderT (isXPubCached xpub) cfg
isXPubCached :: MonadLoggerIO m => XPubSpec -> CacheX m Bool
isXPubCached xpub = do
cached <- runRedis (redisIsXPubCached xpub)
if cached
then incrementCounter cacheHits 1
else incrementCounter cacheMisses 1
return cached
redisIsXPubCached :: RedisCtx m f => XPubSpec -> m (f Bool)
redisIsXPubCached xpub = Redis.exists (balancesPfx <> encode xpub)
cacheGetXPubBalances :: MonadLoggerIO m => XPubSpec -> CacheX m [XPubBal]
cacheGetXPubBalances xpub = do
bals <- runRedis $ redisGetXPubBalances xpub
touchKeys [xpub]
return bals
cacheGetXPubTxCount :: (MonadUnliftIO m, MonadLoggerIO m, StoreReadExtra m)
=> XPubSpec -> CacheX m Word32
cacheGetXPubTxCount xpub = do
count <- fromInteger <$> runRedis (redisGetXPubTxCount xpub)
touchKeys [xpub]
return count
redisGetXPubTxCount :: RedisCtx m f => XPubSpec -> m (f Integer)
redisGetXPubTxCount xpub = Redis.zcard (txSetPfx <> encode xpub)
cacheGetXPubTxs ::
(StoreReadBase m, MonadLoggerIO m)
=> XPubSpec
-> Limits
-> CacheX m [TxRef]
cacheGetXPubTxs xpub limits =
case start limits of
Nothing ->
go1 Nothing
Just (AtTx th) -> lift (getTxData th) >>= \case
Just TxData {txDataBlock = b@BlockRef{}} ->
go1 $ Just (blockRefScore b)
_ ->
go2 th
Just (AtBlock h) ->
go1 (Just (blockRefScore (BlockRef h maxBound)))
where
go1 score = do
xs <- runRedis $
getFromSortedSet
(txSetPfx <> encode xpub)
score
(offset limits)
(limit limits)
touchKeys [xpub]
return $ map (uncurry f) xs
go2 hash = do
xs <- runRedis $
getFromSortedSet
(txSetPfx <> encode xpub)
Nothing
0
0
touchKeys [xpub]
let xs' = if any ((== hash) . fst) xs
then dropWhile ((/= hash) . fst) xs
else []
return
$ map (uncurry f)
$ l
$ drop (fromIntegral (offset limits)) xs'
l = if limit limits > 0
then take (fromIntegral (limit limits))
else id
f t s = TxRef {txRefHash = t, txRefBlock = scoreBlockRef s}
cacheGetXPubUnspents ::
(StoreReadBase m, MonadLoggerIO m)
=> XPubSpec
-> Limits
-> CacheX m [(BlockRef, OutPoint)]
cacheGetXPubUnspents xpub limits =
case start limits of
Nothing ->
go1 Nothing
Just (AtTx th) -> lift (getTxData th) >>= \case
Just TxData {txDataBlock = b@BlockRef{}} ->
go1 (Just (blockRefScore b))
_ ->
go2 th
Just (AtBlock h) ->
go1 (Just (blockRefScore (BlockRef h maxBound)))
where
go1 score = do
xs <-
runRedis $
getFromSortedSet
(utxoPfx <> encode xpub)
score
(offset limits)
(limit limits)
touchKeys [xpub]
return $ map (uncurry f) xs
go2 hash = do
xs <- runRedis $
getFromSortedSet
(utxoPfx <> encode xpub)
Nothing
0
0
touchKeys [xpub]
let xs' = if any ((== hash) . outPointHash . fst) xs
then dropWhile ((/= hash) . outPointHash . fst) xs
else []
return
$ map (uncurry f)
$ l
$ drop (fromIntegral (offset limits)) xs'
l = if limit limits > 0
then take (fromIntegral (limit limits))
else id
f o s = (scoreBlockRef s, o)
redisGetXPubBalances :: (Functor f, RedisCtx m f) => XPubSpec -> m (f [XPubBal])
redisGetXPubBalances xpub =
fmap (sort . map (uncurry f)) <$> getAllFromMap (balancesPfx <> encode xpub)
where
f p b = XPubBal {xPubBalPath = p, xPubBal = b}
blockRefScore :: BlockRef -> Double
blockRefScore BlockRef {blockRefHeight = h, blockRefPos = p} =
fromIntegral (0x001fffffffffffff - (h' .|. p'))
where
h' = (fromIntegral h .&. 0x07ffffff) `shift` 26 :: Word64
p' = (fromIntegral p .&. 0x03ffffff) :: Word64
blockRefScore MemRef {memRefTime = t} = negate t'
where
t' = fromIntegral (t .&. 0x001fffffffffffff)
scoreBlockRef :: Double -> BlockRef
scoreBlockRef s
| s < 0 = MemRef {memRefTime = n}
| otherwise = BlockRef {blockRefHeight = h, blockRefPos = p}
where
n = truncate (abs s) :: Word64
m = 0x001fffffffffffff - n
h = fromIntegral (m `shift` (-26))
p = fromIntegral (m .&. 0x03ffffff)
getFromSortedSet ::
(Applicative f, RedisCtx m f, Serialize a)
=> ByteString
-> Maybe Double
-> Word32
-> Word32
-> m (f [(a, Double)])
getFromSortedSet key Nothing off 0 = do
xs <- zrangeWithscores key (fromIntegral off) (-1)
return $ do
ys <- map (\(x, s) -> (, s) <$> decode x) <$> xs
return (rights ys)
getFromSortedSet key Nothing off count = do
xs <-
zrangeWithscores
key
(fromIntegral off)
(fromIntegral off + fromIntegral count - 1)
return $ do
ys <- map (\(x, s) -> (, s) <$> decode x) <$> xs
return (rights ys)
getFromSortedSet key (Just score) off 0 = do
xs <-
zrangebyscoreWithscoresLimit
key
score
(1 / 0)
(fromIntegral off)
(-1)
return $ do
ys <- map (\(x, s) -> (, s) <$> decode x) <$> xs
return (rights ys)
getFromSortedSet key (Just score) off count = do
xs <-
zrangebyscoreWithscoresLimit
key
score
(1 / 0)
(fromIntegral off)
(fromIntegral count)
return $ do
ys <- map (\(x, s) -> (, s) <$> decode x) <$> xs
return (rights ys)
getAllFromMap ::
(Functor f, RedisCtx m f, Serialize k, Serialize v)
=> ByteString
-> m (f [(k, v)])
getAllFromMap n = do
fxs <- hgetall n
return $ do
xs <- fxs
return
[ (k, v)
| (k', v') <- xs
, let Right k = decode k'
, let Right v = decode v'
]
data CacheWriterMessage
= CacheNewBlock
| CacheNewTx TxHash
type CacheWriterInbox = Inbox CacheWriterMessage
type CacheWriter = Mailbox CacheWriterMessage
data AddressXPub = AddressXPub
{ addressXPubSpec :: !XPubSpec
, addressXPubPath :: ![KeyIndex]
}
deriving (Show, Eq, Generic, NFData, Serialize)
mempoolSetKey :: ByteString
mempoolSetKey = "mempool"
addrPfx :: ByteString
addrPfx = "a"
bestBlockKey :: ByteString
bestBlockKey = "head"
maxKey :: ByteString
maxKey = "max"
xPubAddrFunction :: DeriveType -> XPubKey -> Address
xPubAddrFunction DeriveNormal = xPubAddr
xPubAddrFunction DeriveP2SH = xPubCompatWitnessAddr
xPubAddrFunction DeriveP2WPKH = xPubWitnessAddr
cacheWriter ::
(MonadUnliftIO m, MonadLoggerIO m, StoreReadExtra m)
=> CacheConfig -> CacheWriterInbox -> m ()
cacheWriter cfg inbox =
runReaderT go cfg
where
go = do
newBlockC
syncMempoolC
forever $ do
x <- receive inbox
cacheWriterReact x
lockIt :: MonadLoggerIO m => CacheX m (Maybe Word32)
lockIt = do
rnd <- liftIO randomIO
go rnd >>= \case
Right Redis.Ok -> do
$(logDebugS) "Cache" $
"Acquired lock with value " <> cs (show rnd)
incrementCounter cacheLockAcquired 1
return (Just rnd)
Right Redis.Pong -> do
$(logErrorS) "Cache"
"Unexpected pong when acquiring lock"
incrementCounter cacheLockFailed 1
return Nothing
Right (Redis.Status s) -> do
$(logErrorS) "Cache" $
"Unexpected status acquiring lock: " <> cs s
incrementCounter cacheLockFailed 1
return Nothing
Left (Redis.Bulk Nothing) -> do
$(logDebugS) "Cache" "Lock already taken"
incrementCounter cacheLockFailed 1
return Nothing
Left e -> do
$(logErrorS) "Cache"
"Error when trying to acquire lock"
incrementCounter cacheLockFailed 1
throwIO (RedisError e)
where
go rnd = do
conn <- asks cacheConn
liftIO . Redis.runRedis conn $ do
let opts =
Redis.SetOpts
{ Redis.setSeconds = Just 300
, Redis.setMilliseconds = Nothing
, Redis.setCondition = Just Redis.Nx
}
Redis.setOpts "lock" (cs (show rnd)) opts
unlockIt :: MonadLoggerIO m => Maybe Word32 -> CacheX m ()
unlockIt Nothing = return ()
unlockIt (Just i) =
runRedis (Redis.get "lock") >>= \case
Nothing ->
$(logErrorS) "Cache" $
"Not releasing lock with value " <> cs (show i) <>
": not locked"
Just bs ->
if read (cs bs) == i
then do
void $ runRedis (Redis.del ["lock"])
$(logDebugS) "Cache" $
"Released lock with value " <>
cs (show i)
incrementCounter cacheLockReleased 1
else
$(logErrorS) "Cache" $
"Could not release lock: value is not " <>
cs (show i)
withLock ::
(MonadLoggerIO m, MonadUnliftIO m)
=> CacheX m a
-> CacheX m (Maybe a)
withLock f =
bracket lockIt unlockIt $ \case
Just _ -> Just <$> f
Nothing -> return Nothing
smallDelay :: MonadUnliftIO m => CacheX m ()
smallDelay = do
delay <- asks cacheRetryDelay
let delayMin = delay `div` 2
let delayMax = delay * 3 `div` 2
threadDelay =<< liftIO (randomRIO (delayMin, delayMax))
withLockForever
:: (MonadLoggerIO m, MonadUnliftIO m)
=> CacheX m a
-> CacheX m a
withLockForever go =
withLock go >>= \case
Nothing -> do
smallDelay
$(logDebugS) "Cache" "Retrying lock aquisition without limits"
withLockForever go
Just x -> return x
withLockRetry
:: (MonadLoggerIO m, MonadUnliftIO m)
=> Int
-> CacheX m a
-> CacheX m (Maybe a)
withLockRetry i f
| i <= 0 = return Nothing
| otherwise = withLock f >>= \case
Nothing -> do
smallDelay
$(logDebugS) "Cache" $
"Retrying lock acquisition: " <>
cs (show i) <> " tries remaining"
withLockRetry (i - 1) f
x -> return x
pruneDB :: (MonadUnliftIO m, MonadLoggerIO m, StoreReadBase m)
=> CacheX m Integer
pruneDB = do
x <- asks cacheMax
s <- runRedis Redis.dbsize
if s > x then flush (s - x) else return 0
where
flush n =
case n `div` 64 of
0 -> return 0
x -> fmap (fromMaybe 0) $ withLock $ do
ks <- fmap (map fst) . runRedis $
getFromSortedSet maxKey Nothing 0 (fromIntegral x)
$(logDebugS) "Cache" $
"Pruning " <> cs (show (length ks)) <> " old xpubs"
delXPubKeys ks
touchKeys :: MonadLoggerIO m => [XPubSpec] -> CacheX m ()
touchKeys xpubs = do
now <- systemSeconds <$> liftIO getSystemTime
runRedis $ redisTouchKeys now xpubs
redisTouchKeys :: (Monad f, RedisCtx m f, Real a) => a -> [XPubSpec] -> m (f ())
redisTouchKeys _ [] = return $ return ()
redisTouchKeys now xpubs =
void <$> Redis.zadd maxKey (map ((realToFrac now, ) . encode) xpubs)
cacheWriterReact ::
(MonadUnliftIO m, MonadLoggerIO m, StoreReadExtra m)
=> CacheWriterMessage -> CacheX m ()
cacheWriterReact CacheNewBlock =
doSync
cacheWriterReact (CacheNewTx txid) = go
where
f = cacheIsInMempool txid >>= \x ->
unless x $
lift (getTxData txid) >>= \mtx ->
forM_ mtx $ \tx -> do
$(logDebugS) "Cache" $
"Importing mempool transaction: " <> txHashToHex txid
importMultiTxC [tx]
go = withLock f >>= \case
Just () -> return ()
Nothing -> smallDelay >> go
doSync :: (MonadUnliftIO m, MonadLoggerIO m, StoreReadExtra m)
=> CacheX m ()
doSync = newBlockC >> void pruneDB
lenNotNull :: [XPubBal] -> Int
lenNotNull = length . filter (not . nullBalance . xPubBal)
newXPubC ::
(MonadUnliftIO m, MonadLoggerIO m, StoreReadExtra m)
=> XPubSpec -> [XPubBal] -> CacheX m ()
newXPubC xpub xbals = should_index >>= \i ->
when i $ withMetrics cacheIndexTime index
where
op XPubUnspent {xPubUnspent = u} = (unspentPoint u, unspentBlock u)
should_index =
asks cacheMin >>= \x ->
if x <= lenNotNull xbals then inSync else return False
index =
bracket set_index unset_index $ \y -> when y $
withMetrics cacheIndexTime $ do
xpubtxt <- xpubText xpub
$(logDebugS) "Cache" $
"Caching " <> xpubtxt <> ": " <>
cs (show (length xbals)) <> " addresses / " <>
cs (show (lenNotNull xbals)) <> " used"
utxo <- lift $ xPubUnspents xpub xbals def
$(logDebugS) "Cache" $
"Caching " <> xpubtxt <> ": " <> cs (show (length utxo)) <>
" utxos"
xtxs <- lift $ xPubTxs xpub xbals def
$(logDebugS) "Cache" $
"Caching " <> xpubtxt <> ": " <> cs (show (length xtxs)) <>
" txs"
now <- systemSeconds <$> liftIO getSystemTime
runRedis $ do
b <- redisTouchKeys now [xpub]
c <- redisAddXPubBalances xpub xbals
d <- redisAddXPubUnspents xpub (map op utxo)
e <- redisAddXPubTxs xpub xtxs
return $ b >> c >> d >> e >> return ()
$(logDebugS) "Cache" $ "Cached " <> xpubtxt
key = idxPfx <> encode xpub
opts = Redis.SetOpts
{ Redis.setSeconds = Just 600
, Redis.setMilliseconds = Nothing
, Redis.setCondition = Just Redis.Nx
}
red = Redis.setOpts key "1" opts
unset_index y = when y . void . runRedis $ Redis.del [key]
set_index =
asks cacheConn >>= \conn ->
liftIO (Redis.runRedis conn red) >>= return . isRight
inSync :: (MonadUnliftIO m, MonadLoggerIO m, StoreReadExtra m)
=> CacheX m Bool
inSync =
lift getBestBlock >>= \case
Nothing -> return False
Just bb ->
asks cacheChain >>= \ch ->
chainGetBest ch >>= \cb ->
return $ headerHash (nodeHeader cb) == bb
newBlockC :: (MonadUnliftIO m, MonadLoggerIO m, StoreReadExtra m)
=> CacheX m ()
newBlockC =
inSync >>= \s -> when s $
asks cacheChain >>= \ch ->
chainGetBest ch >>= \bn ->
cacheGetHead >>= \case
Nothing ->
$(logInfoS) "Cache" "Initializing best cache block" >>
withLock (do_import bn) >>= \case
Nothing -> smallDelay >> newBlockC
Just () -> return ()
Just hb ->
if hb == headerHash (nodeHeader bn)
then $(logDebugS) "Cache" "Cache in sync"
else
withLock (sync ch hb bn) >>= \case
Nothing -> smallDelay >> newBlockC
Just () -> return ()
where
sync ch hb bn =
chainGetBlock hb ch >>= \case
Nothing -> do
$(logErrorS) "Cache" $
"Cache head block node not found: " <>
blockHashToHex hb
throwIO $ LogicError $
"Cache head block node not found: " <>
cs (blockHashToHex hb)
Just hn ->
chainBlockMain hb ch >>= \m ->
if m
then next ch bn hn
else do
$(logDebugS) "Cache" $
"Reverting cache head not in main chain: " <>
blockHashToHex hb
removeHeadC hb
cacheGetHead >>= \case
Nothing -> do_import bn
Just hb' -> sync ch hb' bn
next ch bn hn =
if | prevBlock (nodeHeader bn) == headerHash (nodeHeader hn) ->
do_import bn
| nodeHeight bn > nodeHeight hn ->
chainGetAncestor (nodeHeight hn + 1) bn ch >>= \case
Nothing -> do
$(logErrorS) "Cache" $
"Ancestor not found at height "
<> cs (show (nodeHeight hn + 1))
<> " for block: "
<> blockHashToHex (headerHash (nodeHeader bn))
throwIO $ LogicError $
"Ancestor not found at height "
<> show (nodeHeight hn + 1)
<> " for block: "
<> cs (blockHashToHex (headerHash (nodeHeader bn)))
Just hn' -> do
do_import hn'
next ch bn hn'
| otherwise ->
$(logInfoS) "Cache" "Cache best block higher than this node's"
do_import = importBlockC . headerHash . nodeHeader
importBlockC :: (MonadUnliftIO m, StoreReadExtra m, MonadLoggerIO m)
=> BlockHash -> CacheX m ()
importBlockC bh =
lift (getBlock bh) >>= \case
Just bd -> do
let ths = blockDataTxs bd
tds <- sortTxData . catMaybes <$> mapM (lift . getTxData) ths
$(logDebugS) "Cache" $
"Importing " <> cs (show (length tds)) <>
" transactions from block " <>
blockHashToHex bh
importMultiTxC tds
$(logDebugS) "Cache" $
"Done importing " <> cs (show (length tds)) <>
" transactions from block " <>
blockHashToHex bh
cacheSetHead bh
Nothing -> do
$(logErrorS) "Cache" $
"Could not get block: "
<> blockHashToHex bh
throwIO . LogicError . cs $
"Could not get block: "
<> blockHashToHex bh
removeHeadC :: (StoreReadExtra m, MonadUnliftIO m, MonadLoggerIO m)
=> BlockHash -> CacheX m ()
removeHeadC cb =
void . runMaybeT $ do
bh <- MaybeT cacheGetHead
guard (cb == bh)
bd <- MaybeT (lift (getBlock bh))
lift $ do
tds <- sortTxData . catMaybes <$>
mapM (lift . getTxData) (blockDataTxs bd)
$(logDebugS) "Cache" $ "Reverting head: " <> blockHashToHex bh
importMultiTxC tds
$(logWarnS) "Cache" $
"Reverted block head "
<> blockHashToHex bh
<> " to parent "
<> blockHashToHex (prevBlock (blockDataHeader bd))
cacheSetHead (prevBlock (blockDataHeader bd))
importMultiTxC ::
(MonadUnliftIO m, StoreReadExtra m, MonadLoggerIO m)
=> [TxData] -> CacheX m ()
importMultiTxC txs = do
$(logDebugS) "Cache" $ "Processing " <> cs (show (length txs)) <> " txs"
$(logDebugS) "Cache" $
"Getting address information for "
<> cs (show (length alladdrs))
<> " addresses"
addrmap <- getaddrmap
let addrs = HashMap.keys addrmap
$(logDebugS) "Cache" $
"Getting balances for "
<> cs (show (HashMap.size addrmap))
<> " addresses"
balmap <- getbalances addrs
$(logDebugS) "Cache" $
"Getting unspent data for "
<> cs (show (length allops))
<> " outputs"
unspentmap <- getunspents
gap <- lift getMaxGap
now <- systemSeconds <$> liftIO getSystemTime
let xpubs = allxpubsls addrmap
forM_ (zip [(1 :: Int) ..] xpubs) $ \(i, xpub) -> do
xpubtxt <- xpubText xpub
$(logDebugS) "Cache" $
"Affected xpub "
<> cs (show i) <> "/" <> cs (show (length xpubs))
<> ": " <> xpubtxt
addrs' <- do
$(logDebugS) "Cache" $
"Getting xpub balances for "
<> cs (show (length xpubs)) <> " xpubs"
xmap <- getxbals xpubs
let addrmap' = faddrmap (HashMap.keysSet xmap) addrmap
$(logDebugS) "Cache" "Starting Redis import pipeline"
runRedis $ do
x <- redisImportMultiTx addrmap' unspentmap txs
y <- redisUpdateBalances addrmap' balmap
z <- redisTouchKeys now (HashMap.keys xmap)
return $ x >> y >> z >> return ()
$(logDebugS) "Cache" "Completed Redis pipeline"
return $ getNewAddrs gap xmap (HashMap.elems addrmap')
cacheAddAddresses addrs'
where
alladdrsls = HashSet.toList alladdrs
faddrmap xmap = HashMap.filter (\a -> addressXPubSpec a `elem` xmap)
getaddrmap =
HashMap.fromList . catMaybes . zipWith (\a -> fmap (a, )) alladdrsls <$>
cacheGetAddrsInfo alladdrsls
getunspents =
HashMap.fromList . catMaybes . zipWith (\p -> fmap (p, )) allops <$>
lift (mapM getUnspent allops)
getbalances addrs =
HashMap.fromList . zip addrs <$> mapM (lift . getDefaultBalance) addrs
getxbals xpubs = do
bals <- runRedis . fmap sequence . forM xpubs $ \xpub -> do
bs <- redisGetXPubBalances xpub
return $ (,) xpub <$> bs
return $ HashMap.filter (not . null) (HashMap.fromList bals)
allops = map snd $ concatMap txInputs txs <> concatMap txOutputs txs
alladdrs =
HashSet.fromList . map fst $
concatMap txInputs txs <> concatMap txOutputs txs
allxpubsls addrmap = HashSet.toList (allxpubs addrmap)
allxpubs addrmap =
HashSet.fromList . map addressXPubSpec $ HashMap.elems addrmap
redisImportMultiTx ::
(Monad f, RedisCtx m f)
=> HashMap Address AddressXPub
-> HashMap OutPoint Unspent
-> [TxData]
-> m (f ())
redisImportMultiTx addrmap unspentmap txs = do
xs <- mapM importtxentries txs
return $ sequence_ xs
where
uns p i =
case HashMap.lookup p unspentmap of
Just u ->
redisAddXPubUnspents (addressXPubSpec i) [(p, unspentBlock u)]
Nothing -> redisRemXPubUnspents (addressXPubSpec i) [p]
addtx tx a p =
case HashMap.lookup a addrmap of
Just i -> do
let tr = TxRef { txRefHash = txHash (txData tx)
, txRefBlock = txDataBlock tx
}
x <- redisAddXPubTxs (addressXPubSpec i) [tr]
y <- uns p i
return $ x >> y >> return ()
Nothing -> return (pure ())
remtx tx a p =
case HashMap.lookup a addrmap of
Just i -> do
x <- redisRemXPubTxs (addressXPubSpec i) [txHash (txData tx)]
y <- uns p i
return $ x >> y >> return ()
Nothing -> return (pure ())
importtxentries tx =
if txDataDeleted tx
then do
x <- mapM (uncurry (remtx tx)) (txaddrops tx)
y <- redisRemFromMempool [txHash (txData tx)]
return $ sequence_ x >> void y
else do
a <- sequence <$> mapM (uncurry (addtx tx)) (txaddrops tx)
b <-
case txDataBlock tx of
b@MemRef {} ->
let tr = TxRef { txRefHash = txHash (txData tx)
, txRefBlock = b
}
in redisAddToMempool [tr]
_ -> redisRemFromMempool [txHash (txData tx)]
return $ a >> b >> return ()
txaddrops td = txInputs td <> txOutputs td
redisUpdateBalances ::
(Monad f, RedisCtx m f)
=> HashMap Address AddressXPub
-> HashMap Address Balance
-> m (f ())
redisUpdateBalances addrmap balmap =
fmap (fmap mconcat . sequence) . forM (HashMap.keys addrmap) $ \a ->
case (HashMap.lookup a addrmap, HashMap.lookup a balmap) of
(Just ainfo, Just bal) ->
redisAddXPubBalances (addressXPubSpec ainfo) [xpubbal ainfo bal]
_ -> return (pure ())
where
xpubbal ainfo bal =
XPubBal {xPubBalPath = addressXPubPath ainfo, xPubBal = bal}
cacheAddAddresses ::
(StoreReadExtra m, MonadUnliftIO m, MonadLoggerIO m)
=> [(Address, AddressXPub)]
-> CacheX m ()
cacheAddAddresses [] = $(logDebugS) "Cache" "No further addresses to add"
cacheAddAddresses addrs = do
$(logDebugS) "Cache" $
"Adding " <> cs (show (length addrs)) <> " new generated addresses"
$(logDebugS) "Cache" "Getting balances"
balmap <- HashMap.fromListWith (<>) <$> mapM (uncurry getbal) addrs
$(logDebugS) "Cache" "Getting unspent outputs"
utxomap <- HashMap.fromListWith (<>) <$> mapM (uncurry getutxo) addrs
$(logDebugS) "Cache" "Getting transactions"
txmap <- HashMap.fromListWith (<>) <$> mapM (uncurry gettxmap) addrs
$(logDebugS) "Cache" "Running Redis pipeline"
runRedis $ do
a <- forM (HashMap.toList balmap) (uncurry redisAddXPubBalances)
b <- forM (HashMap.toList utxomap) (uncurry redisAddXPubUnspents)
c <- forM (HashMap.toList txmap) (uncurry redisAddXPubTxs)
return $ sequence_ a >> sequence_ b >> sequence_ c
$(logDebugS) "Cache" "Completed Redis pipeline"
let xpubs = HashSet.toList
. HashSet.fromList
. map addressXPubSpec
$ Map.elems amap
$(logDebugS) "Cache" "Getting xpub balances"
xmap <- getbals xpubs
gap <- lift getMaxGap
let notnulls = getnotnull balmap
addrs' = getNewAddrs gap xmap notnulls
cacheAddAddresses addrs'
where
getbals xpubs = runRedis $ do
bs <- sequence <$> forM xpubs redisGetXPubBalances
return $
HashMap.filter (not . null) . HashMap.fromList . zip xpubs <$> bs
amap = Map.fromList addrs
getnotnull =
let f xpub =
map $ \bal ->
AddressXPub
{ addressXPubSpec = xpub
, addressXPubPath = xPubBalPath bal
}
g = filter (not . nullBalance . xPubBal)
in concatMap (uncurry f) . HashMap.toList . HashMap.map g
getbal a i =
let f b = ( addressXPubSpec i
, [XPubBal {xPubBal = b, xPubBalPath = addressXPubPath i}] )
in f <$> lift (getDefaultBalance a)
getutxo a i =
let f us = ( addressXPubSpec i
, map (\u -> (unspentPoint u, unspentBlock u)) us )
in f <$> lift (getAddressUnspents a def)
gettxmap a i =
let f ts = (addressXPubSpec i, ts)
in f <$> lift (getAddressTxs a def)
getNewAddrs :: KeyIndex
-> HashMap XPubSpec [XPubBal]
-> [AddressXPub]
-> [(Address, AddressXPub)]
getNewAddrs gap xpubs =
concatMap $ \a ->
case HashMap.lookup (addressXPubSpec a) xpubs of
Nothing -> []
Just bals -> addrsToAdd gap bals a
syncMempoolC :: (MonadUnliftIO m, MonadLoggerIO m, StoreReadExtra m)
=> CacheX m ()
syncMempoolC = void . withLockForever $ do
nodepool <- HashSet.fromList . map snd <$> lift getMempool
cachepool <- HashSet.fromList . map snd <$> cacheGetMempool
getem (HashSet.difference nodepool cachepool)
getem (HashSet.difference cachepool nodepool)
where
getem tset = do
let tids = HashSet.toList tset
txs <- catMaybes <$> mapM (lift . getTxData) tids
unless (null txs) $ do
$(logDebugS) "Cache" $
"Importing mempool transactions: " <> cs (show (length txs))
importMultiTxC txs
cacheGetMempool :: MonadLoggerIO m => CacheX m [(UnixTime, TxHash)]
cacheGetMempool = runRedis redisGetMempool
cacheIsInMempool :: MonadLoggerIO m => TxHash -> CacheX m Bool
cacheIsInMempool = runRedis . redisIsInMempool
cacheGetHead :: MonadLoggerIO m => CacheX m (Maybe BlockHash)
cacheGetHead = runRedis redisGetHead
cacheSetHead :: (MonadLoggerIO m, StoreReadBase m) => BlockHash -> CacheX m ()
cacheSetHead bh = do
$(logDebugS) "Cache" $ "Cache head set to: " <> blockHashToHex bh
void $ runRedis (redisSetHead bh)
cacheGetAddrsInfo ::
MonadLoggerIO m => [Address] -> CacheX m [Maybe AddressXPub]
cacheGetAddrsInfo as = runRedis (redisGetAddrsInfo as)
redisAddToMempool :: (Applicative f, RedisCtx m f) => [TxRef] -> m (f Integer)
redisAddToMempool [] = return (pure 0)
redisAddToMempool btxs =
zadd mempoolSetKey $
map (\btx -> (blockRefScore (txRefBlock btx), encode (txRefHash btx)))
btxs
redisIsInMempool :: (Applicative f, RedisCtx m f) => TxHash -> m (f Bool)
redisIsInMempool txid =
fmap isJust <$> Redis.zrank mempoolSetKey (encode txid)
redisRemFromMempool ::
(Applicative f, RedisCtx m f) => [TxHash] -> m (f Integer)
redisRemFromMempool [] = return (pure 0)
redisRemFromMempool xs = zrem mempoolSetKey $ map encode xs
redisSetAddrInfo ::
(Functor f, RedisCtx m f) => Address -> AddressXPub -> m (f ())
redisSetAddrInfo a i = void <$> Redis.set (addrPfx <> encode a) (encode i)
cacheDelXPubs :: (MonadUnliftIO m, MonadLoggerIO m, StoreReadBase m)
=> [XPubSpec]
-> CacheT m Integer
cacheDelXPubs xpubs = ReaderT $ \case
Just cache -> runReaderT (delXPubKeys xpubs) cache
Nothing -> return 0
delXPubKeys ::
(MonadUnliftIO m, MonadLoggerIO m, StoreReadBase m)
=> [XPubSpec]
-> CacheX m Integer
delXPubKeys [] = return 0
delXPubKeys xpubs = do
forM_ xpubs $ \x -> do
xtxt <- xpubText x
$(logDebugS) "Cache" $ "Deleting xpub: " <> xtxt
xbals <-
runRedis . fmap sequence . forM xpubs $ \xpub -> do
bs <- redisGetXPubBalances xpub
return $ (xpub, ) <$> bs
runRedis $ fmap sum . sequence <$> forM xbals (uncurry redisDelXPubKeys)
redisDelXPubKeys ::
(Monad f, RedisCtx m f) => XPubSpec -> [XPubBal] -> m (f Integer)
redisDelXPubKeys xpub bals = go (map (balanceAddress . xPubBal) bals)
where
go addrs = do
addrcount <-
case addrs of
[] -> return (pure 0)
_ -> Redis.del (map ((addrPfx <>) . encode) addrs)
txsetcount <- Redis.del [txSetPfx <> encode xpub]
utxocount <- Redis.del [utxoPfx <> encode xpub]
balcount <- Redis.del [balancesPfx <> encode xpub]
x <- Redis.zrem maxKey [encode xpub]
return $ do
_ <- x
addrs' <- addrcount
txset' <- txsetcount
utxo' <- utxocount
bal' <- balcount
return $ addrs' + txset' + utxo' + bal'
redisAddXPubTxs ::
(Applicative f, RedisCtx m f) => XPubSpec -> [TxRef] -> m (f Integer)
redisAddXPubTxs _ [] = return (pure 0)
redisAddXPubTxs xpub btxs =
zadd (txSetPfx <> encode xpub) $
map (\t -> (blockRefScore (txRefBlock t), encode (txRefHash t))) btxs
redisRemXPubTxs ::
(Applicative f, RedisCtx m f) => XPubSpec -> [TxHash] -> m (f Integer)
redisRemXPubTxs _ [] = return (pure 0)
redisRemXPubTxs xpub txhs = zrem (txSetPfx <> encode xpub) (map encode txhs)
redisAddXPubUnspents ::
(Applicative f, RedisCtx m f)
=> XPubSpec
-> [(OutPoint, BlockRef)]
-> m (f Integer)
redisAddXPubUnspents _ [] =
return (pure 0)
redisAddXPubUnspents xpub utxo =
zadd (utxoPfx <> encode xpub) $
map (\(p, r) -> (blockRefScore r, encode p)) utxo
redisRemXPubUnspents ::
(Applicative f, RedisCtx m f) => XPubSpec -> [OutPoint] -> m (f Integer)
redisRemXPubUnspents _ [] =
return (pure 0)
redisRemXPubUnspents xpub ops =
zrem (utxoPfx <> encode xpub) (map encode ops)
redisAddXPubBalances ::
(Monad f, RedisCtx m f) => XPubSpec -> [XPubBal] -> m (f ())
redisAddXPubBalances _ [] = return (pure ())
redisAddXPubBalances xpub bals = do
xs <- mapM (uncurry (Redis.hset (balancesPfx <> encode xpub))) entries
ys <- forM bals $ \b ->
redisSetAddrInfo
(balanceAddress (xPubBal b))
AddressXPub
{
addressXPubSpec = xpub,
addressXPubPath = xPubBalPath b
}
return $ sequence_ xs >> sequence_ ys
where
entries = map (\b -> (encode (xPubBalPath b), encode (xPubBal b))) bals
redisSetHead :: RedisCtx m f => BlockHash -> m (f Redis.Status)
redisSetHead bh = Redis.set bestBlockKey (encode bh)
redisGetAddrsInfo ::
(Monad f, RedisCtx m f) => [Address] -> m (f [Maybe AddressXPub])
redisGetAddrsInfo [] = return (pure [])
redisGetAddrsInfo as = do
is <- mapM (\a -> Redis.get (addrPfx <> encode a)) as
return $ do
is' <- sequence is
return $ map (eitherToMaybe . decode =<<) is'
addrsToAdd :: KeyIndex -> [XPubBal] -> AddressXPub -> [(Address, AddressXPub)]
addrsToAdd gap xbals addrinfo
| null fbals = []
| otherwise = zipWith f addrs list
where
f a p = (a, AddressXPub {addressXPubSpec = xpub, addressXPubPath = p})
dchain = head (addressXPubPath addrinfo)
fbals = filter ((== dchain) . head . xPubBalPath) xbals
maxidx = maximum (map (head . tail . xPubBalPath) fbals)
xpub = addressXPubSpec addrinfo
aidx = (head . tail) (addressXPubPath addrinfo)
ixs =
if gap > maxidx - aidx
then [maxidx + 1 .. aidx + gap]
else []
paths = map (Deriv :/ dchain :/) ixs
keys = map (\p -> derivePubPath p (xPubSpecKey xpub)) paths
list = map pathToList paths
xpubf = xPubAddrFunction (xPubDeriveType xpub)
addrs = map xpubf keys
sortTxData :: [TxData] -> [TxData]
sortTxData tds =
let txm = Map.fromList (map (\d -> (txHash (txData d), d)) tds)
ths = map (txHash . snd) (sortTxs (map txData tds))
in mapMaybe (`Map.lookup` txm) ths
txInputs :: TxData -> [(Address, OutPoint)]
txInputs td =
let is = txIn (txData td)
ps = I.toAscList (txDataPrevs td)
as = map (scriptToAddressBS . prevScript . snd) ps
f (Right a) i = Just (a, prevOutput i)
f (Left _) _ = Nothing
in catMaybes (zipWith f as is)
txOutputs :: TxData -> [(Address, OutPoint)]
txOutputs td =
let ps =
zipWith
(\i _ ->
OutPoint
{outPointHash = txHash (txData td), outPointIndex = i})
[0 ..]
(txOut (txData td))
as = map (scriptToAddressBS . scriptOutput) (txOut (txData td))
f (Right a) p = Just (a, p)
f (Left _) _ = Nothing
in catMaybes (zipWith f as ps)
redisGetHead :: (Functor f, RedisCtx m f) => m (f (Maybe BlockHash))
redisGetHead = do
x <- Redis.get bestBlockKey
return $ (eitherToMaybe . decode =<<) <$> x
redisGetMempool :: (Applicative f, RedisCtx m f) => m (f [(UnixTime, TxHash)])
redisGetMempool = do
xs <- getFromSortedSet mempoolSetKey Nothing 0 0
return $ map (uncurry f) <$> xs
where
f t s = (memRefTime (scoreBlockRef s), t)
xpubText :: (MonadUnliftIO m, MonadLoggerIO m, StoreReadBase m)
=> XPubSpec -> CacheX m Text
xpubText xpub = do
net <- lift getNetwork
let suffix = case xPubDeriveType xpub of
DeriveNormal -> ""
DeriveP2SH -> "/p2sh"
DeriveP2WPKH -> "/p2wpkh"
return . cs $ suffix <> xPubExport net (xPubSpecKey xpub)
cacheNewBlock :: MonadIO m => CacheWriter -> m ()
cacheNewBlock = send CacheNewBlock
cacheNewTx :: MonadIO m => TxHash -> CacheWriter -> m ()
cacheNewTx = send . CacheNewTx