From 1f589cfe5588ac0217f44bc29511072e4ec46cef Mon Sep 17 00:00:00 2001
From: voidlizard <dzuikov@gmail.com>
Date: Wed, 23 Jul 2025 12:35:48 +0300
Subject: [PATCH] wip

---
 hbs2-storage-ncq/lib/HBS2/Storage/NCQ2.hs | 42 +++++++++++++++++++----
 hbs2-tests/test/TestNCQ.hs                |  2 +-
 2 files changed, 36 insertions(+), 8 deletions(-)

diff --git a/hbs2-storage-ncq/lib/HBS2/Storage/NCQ2.hs b/hbs2-storage-ncq/lib/HBS2/Storage/NCQ2.hs
index e9c1b1a3..6e3d04bd 100644
--- a/hbs2-storage-ncq/lib/HBS2/Storage/NCQ2.hs
+++ b/hbs2-storage-ncq/lib/HBS2/Storage/NCQ2.hs
@@ -145,6 +145,21 @@ data TrackedFile =
   , tfCached :: TVar (Maybe CachedEntry)
   }
 
+data FactE = EmptyFact
+             deriving (Eq,Ord,Show,Data,Generic)
+
+type FactSeq = POSIXTime
+
+data Fact =
+  Fact
+  { factWritten :: Maybe FactSeq
+  , factE       :: FactE
+  }
+  deriving (Eq,Ord,Show,Data,Generic)
+
+instance Hashable FactE
+instance Hashable Fact
+
 type TrackedFiles = Vector TrackedFile
 
 data NCQStorage2 =
@@ -187,6 +202,8 @@ data NCQStorage2 =
   , ncqMergeTasks     :: TVar Int
   , ncqOnRunWriteIdle :: TVar (IO ())
 
+  , ncqFactFiles      :: TVar (HashSet FileKey)
+  , ncqFacts          :: TVar (HashSet Fact)
   }
 
 megabytes :: forall a . Integral a => a
@@ -236,6 +253,8 @@ ncqStorageOpen2 fp upd = do
   ncqSweepSem        <- atomically (newTSem 1)
   ncqMergeTasks      <- newTVarIO 0
   ncqOnRunWriteIdle  <- newTVarIO none
+  ncqFactFiles       <- newTVarIO mempty
+  ncqFacts           <- newTVarIO mempty
 
   ncqReadReq <- newTQueueIO
 
@@ -287,8 +306,8 @@ ncqNewUniqFileName  me@NCQStorage2{..} pref suff = liftIO $ withSem ncqMiscSem d
 ncqEmptyKey :: ByteString
 ncqEmptyKey = BS.replicate ncqKeyLen 0
 
-ncqGetProbesDir :: NCQStorage2 -> FilePath
-ncqGetProbesDir me = ncqGetFileName me ".probes"
+ncqGetFactsDir :: NCQStorage2 -> FilePath
+ncqGetFactsDir me = ncqGetWorkDir me </> ".facts"
 
 ncqGetNewFossilName :: MonadIO m => NCQStorage2 -> m FilePath
 ncqGetNewFossilName me = ncqNewUniqFileName me "fossil-" ".data"
@@ -299,6 +318,11 @@ ncqGetNewStateName me = ncqNewUniqFileName me "state-" ""
 ncqGetNewCompactName :: MonadIO m => NCQStorage2 -> m FilePath
 ncqGetNewCompactName me = ncqNewUniqFileName me "compact-" ".data"
 
+ncqGetNewFactFileName :: MonadIO m => NCQStorage2 -> m FilePath
+ncqGetNewFactFileName me = do
+  ncqNewUniqFileName me (d </> "fact-") ".f"
+  where d = ncqGetFactsDir me
+
 ncqStorageStop2 :: MonadUnliftIO m => NCQStorage2 -> m ()
 ncqStorageStop2 NCQStorage2{..} = do
   atomically $ writeTVar ncqStorageStopReq True
@@ -678,7 +702,7 @@ ncqStorageRun2 ncq@NCQStorage2{..} = flip runContT pure do
                 when (n == n0) STM.retry
 
 
-  spawnActivity probesDB
+  spawnActivity factsDB
 
 
   ContT $ bracket none $ const $ liftIO do
@@ -806,13 +830,13 @@ ncqStorageRun2 ncq@NCQStorage2{..} = flip runContT pure do
         alpha = 0.1
         step  = 1.00
 
-    probesDB = do
-      let dir = ncqGetProbesDir ncq
-      debug $ yellow "probesDB started" <+> pretty dir
+    factsDB = do
+      let dir = ncqGetFactsDir ncq
+      debug $ yellow "factsDB started" <+> pretty dir
       mkdir dir
 
       forever do
-        debug $ yellow "probesDB wip"
+        debug $ yellow "factsDB wip"
         pause @'Seconds 10
 
 
@@ -1535,6 +1559,10 @@ ncqSweepStates me@NCQStorage2{..} = withSem ncqSweepSem $ flip runContT pure do
 ncqSetOnRunWriteIdle :: MonadUnliftIO m => NCQStorage2 -> IO () -> m ()
 ncqSetOnRunWriteIdle NCQStorage2{..} io = atomically (writeTVar ncqOnRunWriteIdle io)
 
+ncqAddFacts :: MonadUnliftIO m => NCQStorage2 -> [FactE] -> m ()
+ncqAddFacts me facts = do
+  none
+
 writeFiltered :: forall m . MonadIO m
               => NCQStorage2
               -> FilePath
diff --git a/hbs2-tests/test/TestNCQ.hs b/hbs2-tests/test/TestNCQ.hs
index e7dbbb42..1fc5a5ce 100644
--- a/hbs2-tests/test/TestNCQ.hs
+++ b/hbs2-tests/test/TestNCQ.hs
@@ -1781,7 +1781,7 @@ main = do
           e -> throwIO $ BadFormException @C (mkList e)
 
 
-        entry $ bindMatch "test:ncq2:probes-db1" $ nil_ $ \e -> do
+        entry $ bindMatch "test:ncq2:facts-db1" $ nil_ $ \e -> do
 
           notice "test:ncq2:probes-db1"
           runTest $ \TestEnv{..} -> do