wip

hbs2-git3/app/Main.hs

@@ -93,7 +93,9 @@ import Data.Vector.Algorithms.Search qualified as MV
 import UnliftIO.Concurrent
 import UnliftIO.IO.File qualified as UIO
 
-import Data.BloomFilter.Easy qualified as Bloom
+import Control.Monad.ST
+import Data.BloomFilter qualified as Bloom
+import Data.BloomFilter.Mutable qualified as MBloom
 
 {- HLINT ignore "Functor law" -}
 {- HLINT ignore "Eta reduce" -}
@@ -146,6 +148,7 @@ recover m = fix \again -> do
 
         liftIO $ withGit3Env connected again
 
+    e -> throwIO e
 ---
 
 data TreeReadState = TreeReadState
@@ -578,14 +581,6 @@ theDict = do
         entry $ bindMatch "zlib:deflate" $ nil_ $ const $ liftIO do
           LBS.hGetContents stdin <&> Zlib.decompress >>= LBS.hPutStr stdout
 
-
-        entry $ bindMatch "test:reflog:bloom:create" $ nil_ $ \syn -> lift do
-          r <- newTQueueIO
-          enumEntries $ \e -> do
-            atomically $ writeTQueue r (BS.take 20 e)
-          atomically (STM.flushTQueue r) <&> (Bloom.easyList 0.01)
-          notice $ "bloom filter build done"
-
         entry $ bindMatch "test:git:read-commit-chain" $ nil_ $ \syn -> lift do
           (mpath, hss) <- case syn of
             [ HashLike s ] -> pure (Nothing, s)
@@ -705,7 +700,8 @@ theDict = do
 
         entry $ bindMatch "test:reflog:index:search:binary:test:2" $ nil_ $ const $ lift do
           r <- newTQueueIO
-          enumEntries $ \e -> do
+          idx <- openIndex
+          enumEntries idx $ \e -> do
             let ha = GitHash $ coerce $ BS.take 20 e
             atomically $ writeTQueue r ha
 
@@ -958,19 +954,16 @@ theDict = do
                   LBS.hPutStr fh contents
 
 
-        entry $ bindMatch "test:git:reflog:index:list:fast" $ nil_ $ \case
+        entry $ bindMatch "test:git:reflog:index:list:fast" $ nil_ $ const $ lift do
-          [ StringLike f ] -> lift do
+          files <- listObjectIndexFiles
+          forConcurrently_ files  $ \(f,_) -> do
             bs <- liftIO $ mmapFileByteString f Nothing
             scanBS bs $ \segment  -> do
-              none
+              let (sha1,blake) = BS.splitAt 20 segment
-              -- let (sha1,blake) = BS.splitAt 20 segment
+                                      & over _1 (coerce @_ @GitHash)
-              --                         & over _1 (coerce @_ @GitHash)
+                                      & over _2 (coerce @_ @HashRef)
-              --                         & over _2 (coerce @_ @HashRef)
 
-              -- notice $ pretty sha1 <+> pretty blake
+              notice $ pretty sha1 <+> pretty blake
-            liftIO $ print $ pretty "okay"
-
-          _ -> throwIO (BadFormException @C nil)
 
         entry $ bindMatch "reflog:index:list" $ nil_ $ const $ lift do
           files <- listObjectIndexFiles
@@ -1068,7 +1061,6 @@ theDict = do
         entry $ bindMatch "reflog:index:path" $ nil_ $ const $ lift do
           indexPath >>= liftIO . print . pretty
 
-
           -- let entriesListOf lbs = S.toList_ $ runConsumeLBS lbs $ readSections $ \s ss -> do
         entry $ bindMatch "reflog:index:files" $ nil_ $ \syn -> lift do
           files <- listObjectIndexFiles
@@ -1079,7 +1071,8 @@ theDict = do
 
         entry $ bindMatch "reflog:index:list:tx" $ nil_ $ const $ lift do
           r <- newTVarIO ( mempty :: HashSet HashRef )
-          enumEntries $ \bs -> do
+          index <- openIndex
+          enumEntries index $ \bs -> do
             atomically $ modifyTVar r (HS.insert (coerce $ BS.take 32 $ BS.drop 20 bs))
           z <- readTVarIO r <&> HS.toList
           liftIO $ mapM_ ( print . pretty ) z
@@ -1087,57 +1080,24 @@ theDict = do
         entry $ bindMatch "reflog:index:build" $ nil_ $ const $ lift $ connectedDo do
           writeReflogIndex
 
-        entry $ bindMatch "git:list:objects:new" $ nil_ $ \syn -> lift do
+        entry $ bindMatch "test:reflog:index:lookup" $ nil_ \case
-          let (opts,argz) = splitOpts [] syn
+          [ GitHashLike h ] -> lift do
+            idx <- openIndex
+            what <- indexEntryLookup idx h >>= orThrowUser "object not found"
+            liftIO $ print $ pretty ( coerce @_ @HashRef what )
 
-          let what = headDef "HEAD" [ x | StringLike x <- argz ]
+          _ -> throwIO (BadFormException @C nil)
-          h0  <- gitRevParseThrow what
 
-          void $ flip runContT pure do
+        entry $ bindMatch "git:commit:list:objects:new" $ nil_ $ \case
+          [ StringLike what ] -> lift do
 
-            rq <- newTQueueIO
+            commit  <- gitRevParseThrow what
-            -- ContT $ withAsync (startReflogIndexQueryQueue rq)
 
-            -- let req h = do
+            idx <- openIndex
-            --       let bs = coerce @GitHash  @N.ByteString h
-            --       let tr = const True
-            --       w <- newEmptyTMVarIO
-            --       atomically $ writeTQueue rq (bs, tr, w)
-            --       r <- atomically $ readTMVar w
-            --       pure $ isNothing r
 
-            cache <- newTVarIO ( mempty :: HashSet GitHash )
+            let req h = lift $ indexEntryLookup idx h <&> isNothing
-
-            -- читаем вообще всё из индекса в память и строим HashSet
-            -- получается, что вообще никакого профита, что это индекс,
-            -- это фуллскан в любом случае.
-            -- Индекс это сортированная последовательность [(GitHash, HashRef)]
-            -- в виде байстроки формата "SD", D ~ GitHash <> HashRef
-            --
-            --
-
-            (t,_) <- timeItT do
-              lift $ enumEntries $ \e -> do
-                atomically do
-                  modifyTVar cache ( HS.insert (coerce $ BS.take 20 e) )
-
-            s <- readTVarIO cache <&> HS.size
-            notice $ pretty s <+> " records read at" <+> pretty t
-
-            l_ <- newTVarIO 0
-            h_ <- newTVarIO ( mempty :: HashSet GitHash )
-            s_ <- newTVarIO ( mempty :: HashMap GitHash Int )
-
-            let req h = do
-                 atomically do
-                  modifyTVar l_ succ
-                  readTVar cache <&> not . HS.member h
-
-            -- читаем только те коммиты, которые не в индексе
-            -- очень быстро, пушо относительно мало объектов
-            (t1,r) <- timeItT (lift $ readCommitChainHPSQ req Nothing h0 dontHandle)
-            notice $ pretty s <+> " new commits read at" <+> pretty (realToFrac @_ @(Fixed E3) t1)
 
+            flip runContT pure do
               cap <- liftIO getNumCapabilities
               gitCatBatchQ <- contWorkerPool cap do
                 che <- ContT withGitCat
@@ -1145,9 +1105,8 @@ theDict = do
 
               new_ <- newTQueueIO
               c1 <- newCacheFixedHPSQ 1000
-            (t3, _) <- timeItT $ lift $ forConcurrently_ (HPSQ.toList r) $ \(commit,_,_) -> do
 
-              (_,self) <- gitCatBatchQ commit
+              (_,self) <- lift $ gitCatBatchQ commit
                              >>= orThrow (GitReadError (show $ pretty commit))
 
               tree <- gitReadCommitTree self
@@ -1157,23 +1116,121 @@ theDict = do
                             <&> ([commit,tree]<>)
                             >>= filterM req
                             --
-              atomically $ modifyTVar s_ (HM.insertWith (\old new -> max old new) commit (length hashes))
-
-              atomically $ modifyTVar h_ (HS.union (HS.fromList hashes))
-
               atomically $ mapM_ (writeTQueue new_) hashes
-
-            -- 1.8 секунд и заметно растёт от числа коммитов, сука
               atomically (STM.flushTQueue new_) >>= liftIO . print . pretty . length
 
-            l <- readTVarIO l_
+          _ -> throwIO (BadFormException @C nil)
-            n <- readTVarIO h_
-            w <- readTVarIO s_ <&> HM.elems
 
-            let a = realToFrac (sum w) / realToFrac (length w)
+        entry $ bindMatch "git:list:objects:new" $ nil_ $ \syn -> lift do
+          let (opts,argz) = splitOpts [] syn
 
-            notice $ pretty l <+> pretty (HS.size n) <+> "done in " <+> pretty (realToFrac @_ @(Fixed E3) t3)
+          let what = headDef "HEAD" [ x | StringLike x <- argz ]
-            notice $ "avg per commit" <+> pretty a
+          h0  <- gitRevParseThrow what
+
+          no_ <- newTVarIO 0
+
+          void $ flip runContT pure do
+
+            -- cache <- newTVarIO ( mempty :: HashSet GitHash )
+
+            -- читаем вообще всё из индекса в память и строим HashSet
+            -- получается, что вообще никакого профита, что это индекс,
+            -- это фуллскан в любом случае.
+            -- Индекс это сортированная последовательность [(GitHash, HashRef)]
+            -- в виде байстроки формата "SD", D ~ GitHash <> HashRef
+
+            -- let blm = runST (MBloom.new undefined 1000000)
+            --
+            -- bloom <- liftIO $ stToIO $ MBloom.new 10000
+            --
+
+            index <- lift openIndex
+
+            -- let req h = do
+            --      atomically do
+            --       readTVar cache <&> not . HS.member h
+
+            -- let
+              -- req2 :: GitHash -> Git3 m Bool
+              -- req2 h = liftIO do
+              --    here <- liftIO $ stToIO $ MBloom.elem h bloom
+
+              --    if not here then pure True else do
+              --      atomically $ modifyTVar blmn_ succ
+              --      forConcurrently_ files $ \f -> do
+              --        found <- binarySearchBS 56 ( BS.take 20. BS.drop 4 ) (coerce h) f
+              --        when (isJust found) do
+              --         atomically $ modifyTVar excl_ (HS.insert h)
+              --      readTVarIO excl_ <&> not . HS.member h
+
+              -- req3 :: HashSet GitHash -> Git3 m (HashSet GitHash)
+              -- req3 hs = liftIO do
+
+              --   forConcurrently_ files $ \f -> do
+              --     flip fix (HS.toList hs) $ \next -> \case
+              --       [] -> none
+              --       (x:xs) -> do
+              --         already <- readTVarIO excl_ <&> HS.member x
+              --         inBloom <- liftIO $ stToIO $ MBloom.elem x bloom
+
+              --         when inBloom do
+              --            atomically $ modifyTVar blmn_ succ
+
+              --         when (not already || inBloom) do
+              --           found <- binarySearchBS 56 ( BS.take 20. BS.drop 4 ) (coerce x) f
+              --           when (isJust found) do
+              --             atomically $ modifyTVar excl_ (HS.insert x)
+              --         next xs
+
+              --   found <- readTVarIO excl_
+              --   pure ( hs `HS.difference` found)
+
+            -- читаем только те коммиты, которые не в индексе
+            -- очень быстро, пушо относительно мало объектов
+
+            idx <- lift openIndex
+            let req h = lift $ indexEntryLookup idx h <&> isNothing
+
+            (t1,r) <- timeItT (lift $ readCommitChainHPSQ req Nothing h0 dontHandle)
+
+            let s = HPSQ.size r
+            notice $ pretty s <+> "new commits read at" <+> pretty (realToFrac @_ @(Fixed E3) t1)
+
+            cap <- liftIO getNumCapabilities
+            gitCatBatchQ <- contWorkerPool cap do
+              che <- ContT withGitCat
+              pure $ gitReadObjectMaybe che
+
+            uniq_ <- newTVarIO mempty
+            -- c1 <- newCacheFixedHPSQ 1000
+            (t3, _) <- timeItT $ lift $ forConcurrently_ (HPSQ.toList r) $ \(commit,_,_) -> do
+
+              (_,self) <- gitCatBatchQ commit
+                             >>= orThrow (GitReadError (show $ pretty commit))
+
+              tree <- gitReadCommitTree self
+
+              -- читаем только те объекты, которые не в индексе
+              gitReadTreeObjectsOnly commit
+                  <&> ([commit,tree]<>)
+                  >>= \hs -> atomically (for_ hs (modifyTVar uniq_ . HS.insert))
+
+            notice $ "all shit read" <+> pretty (realToFrac @_ @(Fixed E2) t3)
+
+            (t4,new) <- lift $ timeItT $ readTVarIO uniq_ >>= filterM req . HS.toList
+
+            notice $ pretty (length new) <+> "new objects" <+> "at" <+> pretty (realToFrac @_ @(Fixed E2) t4)
+
+            -- x <- readTVarIO uniq_ <&> HS.size
+
+            -- blmn <- readTVarIO blmn_
+            -- notice $ "all shit filter" <+> parens (pretty x) <+> brackets (pretty blmn) <+> pretty (realToFrac @_ @(Fixed E2) t4)
+
+            -- notice $ pretty (length new)
+
+
+            -- notice $ "total objects" <+> pretty
+            -- notice $ "present" <+> pretty nhere
 
            -- liftIO $ print $ pretty (HS
 

hbs2-git3/lib/HBS2/Git3/State/Index.hs

@@ -17,9 +17,21 @@ import Data.ByteString.Lazy qualified as LBS
 import Data.Maybe
 import Data.HashMap.Strict (HashMap)
 import Data.HashMap.Strict qualified as HM
+import Data.Word
+import Data.Vector (Vector)
+import Data.Vector qualified as V
+import Data.Kind
+
+
+import Data.BloomFilter qualified as Bloom
+import Data.BloomFilter (Bloom(..))
+import Data.BloomFilter.Mutable qualified as MBloom
+
+import Control.Monad.ST
 
 import Control.Concurrent.STM qualified as STM
 import Codec.Compression.Zstd.Lazy qualified as ZstdL
+import Codec.Serialise
 import Streaming.Prelude qualified as S
 import Streaming hiding (run,chunksOf)
 
@@ -59,6 +71,46 @@ indexPath = do
   reflog <- getGitRemoteKey >>= orThrow Git3ReflogNotSet
   getStatePath (AsBase58 reflog) <&> (</> "index")
 
+data IndexEntry =
+  IndexEntry
+  { entryFile  :: FilePath
+  , entryBS    :: N.ByteString
+  }
+
+data Index a =
+  Index { entries    :: [IndexEntry]
+        , bitmap     :: MBloom.MBloom RealWorld GitHash
+        }
+
+openIndex :: forall a m . (Git3Perks m, MonadReader Git3Env m)
+          => m (Index a)
+
+openIndex = do
+  files <- listObjectIndexFiles
+  bss <- liftIO $ for files $ \(f,_)  -> (f,) <$> mmapFileByteString f Nothing
+  let entries = [ IndexEntry f bs | (f,bs) <- bss ]
+  bloom <- liftIO $ stToIO $ MBloom.new bloomHash 10
+  pure $ Index entries bloom
+
+indexEntryLookup :: forall a m . (Git3Perks m)
+              => Index a
+              -> GitHash
+              -> m (Maybe N.ByteString)
+
+indexEntryLookup Index{..} h = do
+  already_ <- newTVarIO ( mempty :: HashMap GitHash N.ByteString )
+  forConcurrently_ entries $ \IndexEntry{..} -> do
+    what <- readTVarIO already_ <&> HM.lookup h
+    case what of
+      Just{} -> none
+      Nothing -> do
+        offset' <- binarySearchBS 56 ( BS.take 20 . BS.drop 4 ) (coerce h) entryBS
+        maybe1 offset' none $ \offset -> do
+          let ebs = BS.take 32 $ BS.drop (offset + 4 + 20) entryBS
+          atomically $ modifyTVar already_ (HM.insert h ebs)
+
+  readTVarIO already_ <&> headMay . HM.elems
+
 listObjectIndexFiles :: forall m . ( Git3Perks m
                                    , MonadReader Git3Env m
                                    ) => m [(FilePath, Natural)]
@@ -72,16 +124,23 @@ listObjectIndexFiles = do
            pure (f,z)
 
 
-
+enumEntries :: forall a m . ( Git3Perks m
-enumEntries :: forall m . ( Git3Perks m
                           , MonadReader Git3Env m
-                          ) => ( BS.ByteString -> m () ) -> m ()
+                          ) => Index a -> ( BS.ByteString -> m () ) -> m ()
 
-enumEntries action = do
+enumEntries Index{..} action = do
-  files <- listObjectIndexFiles <&> fmap fst
+  forConcurrently_ entries $ \IndexEntry{..} -> do
-  forConcurrently_ files $ \f -> do
+    scanBS entryBS action
-    bs <- liftIO $ mmapFileByteString f Nothing
+
-    scanBS bs action
+bloomHash :: GitHash  -> [Word32]
+bloomHash  gh = [a,b,c,d,e]
+    where
+      bs = coerce gh
+      a = N.word32 (BS.take 4 bs)
+      b = N.word32 (BS.take 4 $ BS.drop 4  bs)
+      c = N.word32 (BS.take 4 $ BS.drop 8  bs)
+      d = N.word32 (BS.take 4 $ BS.drop 12 bs)
+      e = N.word32 (BS.take 4 $ BS.drop 16 bs)
 
 startReflogIndexQueryQueue :: forall a m . ( Git3Perks m
                                            , MonadReader Git3Env m
@@ -134,6 +193,13 @@ startReflogIndexQueryQueue rq = flip runContT pure do
       rest <- readTVar answQ
       for_ rest $ \x -> writeTMVar x Nothing
 
+bloomFilterSize :: Natural -> Natural -> Double -> Natural
+bloomFilterSize n k p
+    | p <= 0 || p >= 1 = 0
+    | otherwise = rnd $ negate (fromIntegral n * fromIntegral k) / log (1 - p ** (1 / fromIntegral k))
+  where
+    rnd x = 2 ** realToFrac (ceiling (logBase 2 x)) & round
+
 writeReflogIndex :: forall m . ( Git3Perks m
                                , MonadReader Git3Env m
                                , HasClientAPI PeerAPI UNIX m
@@ -195,4 +261,27 @@ writeReflogIndex = do
             -- notice $ pretty sha1 <+> pretty tx
             writeSection ( LBS.fromChunks [key,value] ) (LBS.hPutStr wh)
 
+      -- files <- lift listObjectIndexFiles
+      -- let num = sum (fmap snd files) `div` 56
+      -- let size = bloomFilterSize num 5 0.01
+
+      -- bloom <- liftIO $ stToIO (MBloom.new bloomHash (fromIntegral size))
+
+      -- lift $ enumEntries $ \bs -> do
+      --   liftIO $ stToIO $ MBloom.insert bloom (coerce bs)
+
+      -- let bloomIdxName =  idxPath </> "filter"
+      -- bytes <- liftIO $ stToIO $ Bloom.freeze bloom
+
+      -- liftIO $ UIO.withBinaryFileAtomic bloomIdxName WriteMode $ \wh -> do
+      --   LBS.hPutStr wh "puk"
+        -- LBS.hPutStr wh (serialise bytes)
+        -- LBS.writeFile (serialise b
+        -- for_ ss $ \sha1 -> do
+        --   let key   = coerce @_ @N.ByteString sha1
+        --   let value = coerce @_ @N.ByteString tx
+        --   -- notice $ pretty sha1 <+> pretty tx
+        --   writeSection ( LBS.fromChunks [key,value] ) (LBS.hPutStr wh)
+
+