266 lines
7 KiB
Haskell
266 lines
7 KiB
Haskell
{- git-annex command
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-
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- Copyright 2011 Joey Hess <joey@kitenet.net>
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-
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- Licensed under the GNU GPL version 3 or higher.
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-}
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{-# LANGUAGE BangPatterns #-}
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module Command.Status where
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import Control.Monad.State.Strict
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import qualified Data.Map as M
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import Text.JSON
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import Common.Annex
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import qualified Types.Backend as B
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import qualified Types.Remote as R
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import qualified Remote
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import qualified Command.Unused
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import qualified Git
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import qualified Annex
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import Command
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import Utility.DataUnits
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import Utility.DiskFree
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import Annex.Content
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import Types.Key
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import Backend
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import Logs.UUID
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import Logs.Trust
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import Remote
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import Config
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import Utility.Percentage
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-- a named computation that produces a statistic
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type Stat = StatState (Maybe (String, StatState String))
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-- data about a set of keys
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data KeyData = KeyData
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{ countKeys :: Integer
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, sizeKeys :: Integer
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, unknownSizeKeys :: Integer
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, backendsKeys :: M.Map String Integer
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}
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-- cached info that multiple Stats use
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data StatInfo = StatInfo
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{ presentData :: Maybe KeyData
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, referencedData :: Maybe KeyData
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}
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-- a state monad for running Stats in
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type StatState = StateT StatInfo Annex
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def :: [Command]
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def = [command "status" paramNothing seek
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"shows status information about the annex"]
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seek :: [CommandSeek]
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seek = [withNothing start]
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{- Order is significant. Less expensive operations, and operations
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- that share data go together.
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-}
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fast_stats :: [Stat]
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fast_stats =
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[ supported_backends
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, supported_remote_types
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, remote_list Trusted "trusted"
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, remote_list SemiTrusted "semitrusted"
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, remote_list UnTrusted "untrusted"
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, remote_list DeadTrusted "dead"
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, disk_size
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]
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slow_stats :: [Stat]
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slow_stats =
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[ tmp_size
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, bad_data_size
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, local_annex_keys
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, local_annex_size
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, known_annex_keys
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, known_annex_size
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, bloom_info
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, backend_usage
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]
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start :: CommandStart
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start = do
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fast <- Annex.getState Annex.fast
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let stats = if fast then fast_stats else fast_stats ++ slow_stats
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showCustom "status" $ do
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evalStateT (mapM_ showStat stats) (StatInfo Nothing Nothing)
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return True
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stop
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stat :: String -> (String -> StatState String) -> Stat
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stat desc a = return $ Just (desc, a desc)
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nostat :: Stat
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nostat = return Nothing
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json :: JSON j => (j -> String) -> StatState j -> String -> StatState String
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json serialize a desc = do
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j <- a
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lift $ maybeShowJSON [(desc, j)]
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return $ serialize j
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nojson :: StatState String -> String -> StatState String
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nojson a _ = a
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showStat :: Stat -> StatState ()
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showStat s = maybe noop calc =<< s
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where
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calc (desc, a) = do
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(lift . showHeader) desc
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lift . showRaw =<< a
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supported_backends :: Stat
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supported_backends = stat "supported backends" $ json unwords $
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return $ map B.name Backend.list
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supported_remote_types :: Stat
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supported_remote_types = stat "supported remote types" $ json unwords $
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return $ map R.typename Remote.remoteTypes
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remote_list :: TrustLevel -> String -> Stat
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remote_list level desc = stat n $ nojson $ lift $ do
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us <- M.keys <$> (M.union <$> uuidMap <*> remoteMap Remote.name)
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rs <- fst <$> trustPartition level us
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s <- prettyPrintUUIDs n rs
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return $ if null s then "0" else show (length rs) ++ "\n" ++ beginning s
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where
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n = desc ++ " repositories"
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local_annex_size :: Stat
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local_annex_size = stat "local annex size" $ json id $
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showSizeKeys <$> cachedPresentData
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local_annex_keys :: Stat
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local_annex_keys = stat "local annex keys" $ json show $
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countKeys <$> cachedPresentData
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known_annex_size :: Stat
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known_annex_size = stat "known annex size" $ json id $
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showSizeKeys <$> cachedReferencedData
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known_annex_keys :: Stat
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known_annex_keys = stat "known annex keys" $ json show $
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countKeys <$> cachedReferencedData
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tmp_size :: Stat
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tmp_size = staleSize "temporary directory size" gitAnnexTmpDir
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bad_data_size :: Stat
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bad_data_size = staleSize "bad keys size" gitAnnexBadDir
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bloom_info :: Stat
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bloom_info = stat "bloom filter size" $ json id $ do
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localkeys <- countKeys <$> cachedPresentData
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capacity <- fromIntegral <$> lift Command.Unused.bloomCapacity
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let note = aside $
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if localkeys >= capacity
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then "appears too small for this repository; adjust annex.bloomcapacity"
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else showPercentage 1 (percentage capacity localkeys) ++ " full"
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-- Two bloom filters are used at the same time, so double the size
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-- of one.
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size <- roughSize memoryUnits False . (* 2) . fromIntegral . fst <$>
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lift Command.Unused.bloomBitsHashes
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return $ size ++ note
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disk_size :: Stat
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disk_size = stat "available local disk space" $ json id $ lift $
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calcfree
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<$> getDiskReserve
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<*> inRepo (getDiskFree . gitAnnexDir)
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where
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calcfree reserve (Just have) = unwords
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[ roughSize storageUnits False $ nonneg $ have - reserve
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, "(+" ++ roughSize storageUnits False reserve
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, "reserved)"
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]
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calcfree _ _ = "unknown"
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nonneg x
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| x >= 0 = x
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| otherwise = 0
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backend_usage :: Stat
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backend_usage = stat "backend usage" $ nojson $
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calc
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<$> (backendsKeys <$> cachedReferencedData)
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<*> (backendsKeys <$> cachedPresentData)
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where
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calc a b = pp "" $ reverse . sort $ map swap $ M.toList $ M.unionWith (+) a b
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pp c [] = c
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pp c ((n, b):xs) = "\n\t" ++ b ++ ": " ++ show n ++ pp c xs
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swap (a, b) = (b, a)
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cachedPresentData :: StatState KeyData
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cachedPresentData = do
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s <- get
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case presentData s of
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Just v -> return v
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Nothing -> do
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v <- foldKeys <$> lift getKeysPresent
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put s { presentData = Just v }
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return v
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cachedReferencedData :: StatState KeyData
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cachedReferencedData = do
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s <- get
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case referencedData s of
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Just v -> return v
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Nothing -> do
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!v <- lift $ Command.Unused.withKeysReferenced
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emptyKeyData addKey
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put s { referencedData = Just v }
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return v
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emptyKeyData :: KeyData
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emptyKeyData = KeyData 0 0 0 M.empty
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foldKeys :: [Key] -> KeyData
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foldKeys = foldl' (flip addKey) emptyKeyData
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addKey :: Key -> KeyData -> KeyData
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addKey key (KeyData count size unknownsize backends) =
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KeyData count' size' unknownsize' backends'
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where
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{- All calculations strict to avoid thunks when repeatedly
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- applied to many keys. -}
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!count' = count + 1
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!backends' = M.insertWith' (+) (keyBackendName key) 1 backends
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!size' = maybe size (+ size) ks
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!unknownsize' = maybe (unknownsize + 1) (const unknownsize) ks
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ks = keySize key
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showSizeKeys :: KeyData -> String
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showSizeKeys d = total ++ missingnote
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where
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total = roughSize storageUnits False $ sizeKeys d
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missingnote
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| unknownSizeKeys d == 0 = ""
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| otherwise = aside $
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"+ " ++ show (unknownSizeKeys d) ++
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" keys of unknown size"
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staleSize :: String -> (Git.Repo -> FilePath) -> Stat
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staleSize label dirspec = go =<< lift (Command.Unused.staleKeys dirspec)
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where
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go [] = nostat
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go keys = onsize =<< sum <$> keysizes keys
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onsize 0 = nostat
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onsize size = stat label $
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json (++ aside "clean up with git-annex unused") $
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return $ roughSize storageUnits False size
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keysizes keys = map (fromIntegral . fileSize) <$> stats keys
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stats keys = do
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dir <- lift $ fromRepo dirspec
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liftIO $ forM keys $ \k ->
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getFileStatus (dir </> keyFile k)
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aside :: String -> String
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aside s = " (" ++ s ++ ")"
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