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|
{- git-annex command
-
- Copyright 2011 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Command.Status where
import Control.Monad.State
import qualified Data.Map as M
import qualified Data.Set as S
import Data.Set (Set)
import Common.Annex
import qualified Types.Backend as B
import qualified Types.Remote as R
import qualified Remote
import qualified Command.Unused
import qualified Git
import Command
import Utility.DataUnits
import Annex.Content
import Types.Key
import Backend
import Logs.UUID
import Remote
-- a named computation that produces a statistic
type Stat = StatState (Maybe (String, StatState String))
-- cached info that multiple Stats may need
data StatInfo = StatInfo
{ keysPresentCache :: Maybe (Set Key)
, keysReferencedCache :: Maybe (Set Key)
}
-- a state monad for running Stats in
type StatState = StateT StatInfo Annex
command :: [Command]
command = [Command "status" paramNothing needsRepo seek
"shows status information about the annex"]
seek :: [CommandSeek]
seek = [withNothing start]
{- Order is significant. Less expensive operations, and operations
- that share data go together.
-}
stats :: [Stat]
stats =
[ supported_backends
, supported_remote_types
, remote_list
, tmp_size
, bad_data_size
, local_annex_keys
, local_annex_size
, total_annex_keys
, total_annex_size
, backend_usage
]
start :: CommandStart
start = do
evalStateT (mapM_ showStat stats) (StatInfo Nothing Nothing)
stop
stat :: String -> StatState String -> Stat
stat desc a = return $ Just (desc, a)
nostat :: Stat
nostat = return Nothing
showStat :: Stat -> StatState ()
showStat s = calc =<< s
where
calc (Just (desc, a)) = do
liftIO $ putStr $ desc ++ ": "
liftIO $ hFlush stdout
liftIO . putStrLn =<< a
calc Nothing = return ()
supported_backends :: Stat
supported_backends = stat "supported backends" $
return $ unwords $ map B.name Backend.list
supported_remote_types :: Stat
supported_remote_types = stat "supported remote types" $
return $ unwords $ map R.typename Remote.remoteTypes
remote_list :: Stat
remote_list = stat "known repositories" $ lift $ do
s <- prettyPrintUUIDs "repos" =<< M.keys <$> uuidMap
return $ '\n':init s
local_annex_size :: Stat
local_annex_size = stat "local annex size" $
keySizeSum <$> cachedKeysPresent
total_annex_size :: Stat
total_annex_size = stat "total annex size" $
keySizeSum <$> cachedKeysReferenced
local_annex_keys :: Stat
local_annex_keys = stat "local annex keys" $
show . S.size <$> cachedKeysPresent
total_annex_keys :: Stat
total_annex_keys = stat "total annex keys" $
show . S.size <$> cachedKeysReferenced
tmp_size :: Stat
tmp_size = staleSize "temporary directory size" gitAnnexTmpDir
bad_data_size :: Stat
bad_data_size = staleSize "bad keys size" gitAnnexBadDir
backend_usage :: Stat
backend_usage = stat "backend usage" $ usage <$> cachedKeysReferenced
where
usage ks = pp "" $ reverse . sort $ map swap $ splits $ S.toList ks
splits :: [Key] -> [(String, Integer)]
splits ks = M.toList $ M.fromListWith (+) $ map tcount ks
tcount k = (keyBackendName k, 1)
swap (a, b) = (b, a)
pp c [] = c
pp c ((n, b):xs) = "\n\t" ++ b ++ ": " ++ show n ++ pp c xs
cachedKeysPresent :: StatState (Set Key)
cachedKeysPresent = do
s <- get
case keysPresentCache s of
Just v -> return v
Nothing -> do
keys <- S.fromList <$> lift getKeysPresent
put s { keysPresentCache = Just keys }
return keys
cachedKeysReferenced :: StatState (Set Key)
cachedKeysReferenced = do
s <- get
case keysReferencedCache s of
Just v -> return v
Nothing -> do
keys <- S.fromList <$> lift Command.Unused.getKeysReferenced
put s { keysReferencedCache = Just keys }
return keys
keySizeSum :: Set Key -> String
keySizeSum s = total ++ missingnote
where
knownsizes = mapMaybe keySize $ S.toList s
total = roughSize storageUnits False $ sum knownsizes
missing = S.size s - genericLength knownsizes
missingnote
| missing == 0 = ""
| otherwise = aside $
"+ " ++ show missing ++
" keys of unknown size"
staleSize :: String -> (Git.Repo -> FilePath) -> Stat
staleSize label dirspec = do
keys <- lift (Command.Unused.staleKeys dirspec)
if null keys
then nostat
else stat label $ do
let s = keySizeSum $ S.fromList keys
return $ s ++ aside "clean up with git-annex unused"
aside :: String -> String
aside s = " (" ++ s ++ ")"
|
