git-annex/Command/Info.hs

498 lines
14 KiB
Haskell

{- git-annex command
-
- Copyright 2011-2014 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU GPL version 3 or higher.
-}
{-# LANGUAGE BangPatterns #-}
module Command.Info where
import "mtl" Control.Monad.State.Strict
import qualified Data.Map as M
import Text.JSON
import Data.Tuple
import Data.Ord
import Common.Annex
import qualified Command.Unused
import qualified Git
import qualified Annex
import qualified Remote
import qualified Types.Remote as Remote
import Command
import Utility.DataUnits
import Utility.DiskFree
import Annex.Content
import Annex.Link
import Types.Key
import Logs.UUID
import Logs.Trust
import Logs.Location
import Config.NumCopies
import Remote
import Config
import Utility.Percentage
import Logs.Transfer
import Types.TrustLevel
import Types.FileMatcher
import qualified Limit
-- a named computation that produces a statistic
type Stat = StatState (Maybe (String, StatState String))
-- data about a set of keys
data KeyData = KeyData
{ countKeys :: Integer
, sizeKeys :: Integer
, unknownSizeKeys :: Integer
, backendsKeys :: M.Map String Integer
}
data NumCopiesStats = NumCopiesStats
{ numCopiesVarianceMap :: M.Map Variance Integer
}
newtype Variance = Variance Int
deriving (Eq, Ord)
instance Show Variance where
show (Variance n)
| n >= 0 = "numcopies +" ++ show n
| otherwise = "numcopies " ++ show n
-- cached info that multiple Stats use
data StatInfo = StatInfo
{ presentData :: Maybe KeyData
, referencedData :: Maybe KeyData
, remoteData :: M.Map UUID KeyData
, numCopiesStats :: Maybe NumCopiesStats
}
emptyStatInfo :: StatInfo
emptyStatInfo = StatInfo Nothing Nothing M.empty Nothing
-- a state monad for running Stats in
type StatState = StateT StatInfo Annex
cmd :: [Command]
cmd = [noCommit $ dontCheck repoExists $ withOptions (jsonOption : annexedMatchingOptions) $
command "info" (paramOptional $ paramRepeating paramItem) seek SectionQuery
"shows information about the specified item or the repository as a whole"]
seek :: CommandSeek
seek = withWords start
start :: [String] -> CommandStart
start [] = do
globalInfo
stop
start ps = do
mapM_ itemInfo ps
stop
globalInfo :: Annex ()
globalInfo = do
stats <- selStats global_fast_stats global_slow_stats
showCustom "info" $ do
evalStateT (mapM_ showStat stats) emptyStatInfo
return True
itemInfo :: String -> Annex ()
itemInfo p = ifM (isdir p)
( dirInfo p
, do
v <- Remote.byName' p
case v of
Right r -> remoteInfo r
Left _ -> do
v' <- Remote.nameToUUID' p
case v' of
Right u -> uuidInfo u
Left _ -> maybe noinfo (fileInfo p)
=<< isAnnexLink p
)
where
isdir = liftIO . catchBoolIO . (isDirectory <$$> getFileStatus)
noinfo = error $ p ++ " is not a directory or an annexed file or a remote or a uuid"
dirInfo :: FilePath -> Annex ()
dirInfo dir = showCustom (unwords ["info", dir]) $ do
stats <- selStats (tostats dir_fast_stats) (tostats dir_slow_stats)
evalStateT (mapM_ showStat stats) =<< getDirStatInfo dir
return True
where
tostats = map (\s -> s dir)
fileInfo :: FilePath -> Key -> Annex ()
fileInfo file k = showCustom (unwords ["info", file]) $ do
evalStateT (mapM_ showStat (file_stats file k)) emptyStatInfo
return True
remoteInfo :: Remote -> Annex ()
remoteInfo r = showCustom (unwords ["info", Remote.name r]) $ do
info <- map (\(k, v) -> simpleStat k (pure v)) <$> Remote.getInfo r
l <- selStats (remote_fast_stats r ++ info) (uuid_slow_stats (Remote.uuid r))
evalStateT (mapM_ showStat l) emptyStatInfo
return True
uuidInfo :: UUID -> Annex ()
uuidInfo u = showCustom (unwords ["info", fromUUID u]) $ do
l <- selStats [] ((uuid_slow_stats u))
evalStateT (mapM_ showStat l) emptyStatInfo
return True
selStats :: [Stat] -> [Stat] -> Annex [Stat]
selStats fast_stats slow_stats = do
fast <- Annex.getState Annex.fast
return $ if fast
then fast_stats
else fast_stats ++ slow_stats
{- Order is significant. Less expensive operations, and operations
- that share data go together.
-}
global_fast_stats :: [Stat]
global_fast_stats =
[ repository_mode
, remote_list Trusted
, remote_list SemiTrusted
, remote_list UnTrusted
, transfer_list
, disk_size
]
global_slow_stats :: [Stat]
global_slow_stats =
[ tmp_size
, bad_data_size
, local_annex_keys
, local_annex_size
, known_annex_files
, known_annex_size
, bloom_info
, backend_usage
]
dir_fast_stats :: [FilePath -> Stat]
dir_fast_stats =
[ dir_name
, const local_annex_keys
, const local_annex_size
, const known_annex_files
, const known_annex_size
]
dir_slow_stats :: [FilePath -> Stat]
dir_slow_stats =
[ const numcopies_stats
]
file_stats :: FilePath -> Key -> [Stat]
file_stats f k =
[ file_name f
, key_size k
, key_name k
]
remote_fast_stats :: Remote -> [Stat]
remote_fast_stats r = map (\s -> s r)
[ remote_name
, remote_description
, remote_uuid
, remote_cost
, remote_type
]
uuid_slow_stats :: UUID -> [Stat]
uuid_slow_stats u = map (\s -> s u)
[ remote_annex_keys
, remote_annex_size
]
stat :: String -> (String -> StatState String) -> Stat
stat desc a = return $ Just (desc, a desc)
-- The json simply contains the same string that is displayed.
simpleStat :: String -> StatState String -> Stat
simpleStat desc getval = stat desc $ json id getval
nostat :: Stat
nostat = return Nothing
json :: JSON j => (j -> String) -> StatState j -> String -> StatState String
json serialize a desc = do
j <- a
lift $ maybeShowJSON [(desc, j)]
return $ serialize j
nojson :: StatState String -> String -> StatState String
nojson a _ = a
showStat :: Stat -> StatState ()
showStat s = maybe noop calc =<< s
where
calc (desc, a) = do
(lift . showHeader) desc
lift . showRaw =<< a
repository_mode :: Stat
repository_mode = simpleStat "repository mode" $ lift $
ifM isDirect
( return "direct", return "indirect" )
remote_list :: TrustLevel -> Stat
remote_list level = stat n $ nojson $ lift $ do
us <- filter (/= NoUUID) . M.keys
<$> (M.union <$> uuidMap <*> remoteMap Remote.name)
rs <- fst <$> trustPartition level us
s <- prettyPrintUUIDs n rs
return $ if null s then "0" else show (length rs) ++ "\n" ++ beginning s
where
n = showTrustLevel level ++ " repositories"
dir_name :: FilePath -> Stat
dir_name dir = simpleStat "directory" $ pure dir
file_name :: FilePath -> Stat
file_name file = simpleStat "file" $ pure file
remote_name :: Remote -> Stat
remote_name r = simpleStat "remote" $ pure (Remote.name r)
remote_description :: Remote -> Stat
remote_description r = simpleStat "description" $ lift $
Remote.prettyUUID (Remote.uuid r)
remote_uuid :: Remote -> Stat
remote_uuid r = simpleStat "uuid" $ pure $
fromUUID $ Remote.uuid r
remote_cost :: Remote -> Stat
remote_cost r = simpleStat "cost" $ pure $
show $ Remote.cost r
remote_type :: Remote -> Stat
remote_type r = simpleStat "type" $ pure $
Remote.typename $ Remote.remotetype r
local_annex_keys :: Stat
local_annex_keys = stat "local annex keys" $ json show $
countKeys <$> cachedPresentData
local_annex_size :: Stat
local_annex_size = simpleStat "local annex size" $
showSizeKeys <$> cachedPresentData
remote_annex_keys :: UUID -> Stat
remote_annex_keys u = stat "remote annex keys" $ json show $
countKeys <$> cachedRemoteData u
remote_annex_size :: UUID -> Stat
remote_annex_size u = simpleStat "remote annex size" $
showSizeKeys <$> cachedRemoteData u
known_annex_files :: Stat
known_annex_files = stat "annexed files in working tree" $ json show $
countKeys <$> cachedReferencedData
known_annex_size :: Stat
known_annex_size = simpleStat "size of annexed files in working tree" $
showSizeKeys <$> cachedReferencedData
tmp_size :: Stat
tmp_size = staleSize "temporary object directory size" gitAnnexTmpObjectDir
bad_data_size :: Stat
bad_data_size = staleSize "bad keys size" gitAnnexBadDir
key_size :: Key -> Stat
key_size k = simpleStat "size" $ pure $ showSizeKeys $ foldKeys [k]
key_name :: Key -> Stat
key_name k = simpleStat "key" $ pure $ key2file k
bloom_info :: Stat
bloom_info = simpleStat "bloom filter size" $ do
localkeys <- countKeys <$> cachedPresentData
capacity <- fromIntegral <$> lift Command.Unused.bloomCapacity
let note = aside $
if localkeys >= capacity
then "appears too small for this repository; adjust annex.bloomcapacity"
else showPercentage 1 (percentage capacity localkeys) ++ " full"
-- Two bloom filters are used at the same time, so double the size
-- of one.
size <- roughSize memoryUnits False . (* 2) . fromIntegral . fst <$>
lift Command.Unused.bloomBitsHashes
return $ size ++ note
transfer_list :: Stat
transfer_list = stat "transfers in progress" $ nojson $ lift $ do
uuidmap <- Remote.remoteMap id
ts <- getTransfers
return $ if null ts
then "none"
else multiLine $
map (uncurry $ line uuidmap) $ sort ts
where
line uuidmap t i = unwords
[ showLcDirection (transferDirection t) ++ "ing"
, fromMaybe (key2file $ transferKey t) (associatedFile i)
, if transferDirection t == Upload then "to" else "from"
, maybe (fromUUID $ transferUUID t) Remote.name $
M.lookup (transferUUID t) uuidmap
]
disk_size :: Stat
disk_size = simpleStat "available local disk space" $ lift $
calcfree
<$> (annexDiskReserve <$> Annex.getGitConfig)
<*> inRepo (getDiskFree . gitAnnexDir)
where
calcfree reserve (Just have) = unwords
[ roughSize storageUnits False $ nonneg $ have - reserve
, "(+" ++ roughSize storageUnits False reserve
, "reserved)"
]
calcfree _ _ = "unknown"
nonneg x
| x >= 0 = x
| otherwise = 0
backend_usage :: Stat
backend_usage = stat "backend usage" $ nojson $
calc
<$> (backendsKeys <$> cachedReferencedData)
<*> (backendsKeys <$> cachedPresentData)
where
calc x y = multiLine $
map (\(n, b) -> b ++ ": " ++ show n) $
sortBy (flip compare) $ map swap $ M.toList $
M.unionWith (+) x y
numcopies_stats :: Stat
numcopies_stats = stat "numcopies stats" $ nojson $
calc <$> (maybe M.empty numCopiesVarianceMap <$> cachedNumCopiesStats)
where
calc = multiLine
. map (\(variance, count) -> show variance ++ ": " ++ show count)
. sortBy (flip (comparing snd)) . M.toList
cachedPresentData :: StatState KeyData
cachedPresentData = do
s <- get
case presentData s of
Just v -> return v
Nothing -> do
v <- foldKeys <$> lift (getKeysPresent InRepository)
put s { presentData = Just v }
return v
cachedRemoteData :: UUID -> StatState KeyData
cachedRemoteData u = do
s <- get
case M.lookup u (remoteData s) of
Just v -> return v
Nothing -> do
v <- foldKeys <$> lift (loggedKeysFor u)
put s { remoteData = M.insert u v (remoteData s) }
return v
cachedReferencedData :: StatState KeyData
cachedReferencedData = do
s <- get
case referencedData s of
Just v -> return v
Nothing -> do
!v <- lift $ Command.Unused.withKeysReferenced
emptyKeyData addKey
put s { referencedData = Just v }
return v
-- currently only available for directory info
cachedNumCopiesStats :: StatState (Maybe NumCopiesStats)
cachedNumCopiesStats = numCopiesStats <$> get
getDirStatInfo :: FilePath -> Annex StatInfo
getDirStatInfo dir = do
fast <- Annex.getState Annex.fast
matcher <- Limit.getMatcher
(presentdata, referenceddata, numcopiesstats) <-
Command.Unused.withKeysFilesReferencedIn dir initial
(update matcher fast)
return $ StatInfo (Just presentdata) (Just referenceddata) M.empty (Just numcopiesstats)
where
initial = (emptyKeyData, emptyKeyData, emptyNumCopiesStats)
update matcher fast key file vs@(presentdata, referenceddata, numcopiesstats) =
ifM (matcher $ MatchingFile $ FileInfo file file)
( do
!presentdata' <- ifM (inAnnex key)
( return $ addKey key presentdata
, return presentdata
)
let !referenceddata' = addKey key referenceddata
!numcopiesstats' <- if fast
then return numcopiesstats
else updateNumCopiesStats key file numcopiesstats
return $! (presentdata', referenceddata', numcopiesstats')
, return vs
)
emptyKeyData :: KeyData
emptyKeyData = KeyData 0 0 0 M.empty
emptyNumCopiesStats :: NumCopiesStats
emptyNumCopiesStats = NumCopiesStats M.empty
foldKeys :: [Key] -> KeyData
foldKeys = foldl' (flip addKey) emptyKeyData
addKey :: Key -> KeyData -> KeyData
addKey key (KeyData count size unknownsize backends) =
KeyData count' size' unknownsize' backends'
where
{- All calculations strict to avoid thunks when repeatedly
- applied to many keys. -}
!count' = count + 1
!backends' = M.insertWith' (+) (keyBackendName key) 1 backends
!size' = maybe size (+ size) ks
!unknownsize' = maybe (unknownsize + 1) (const unknownsize) ks
ks = keySize key
updateNumCopiesStats :: Key -> FilePath -> NumCopiesStats -> Annex NumCopiesStats
updateNumCopiesStats key file (NumCopiesStats m) = do
!variance <- Variance <$> numCopiesCheck file key (-)
let !m' = M.insertWith' (+) variance 1 m
let !ret = NumCopiesStats m'
return ret
showSizeKeys :: KeyData -> String
showSizeKeys d = total ++ missingnote
where
total = roughSize storageUnits False $ sizeKeys d
missingnote
| unknownSizeKeys d == 0 = ""
| otherwise = aside $
"+ " ++ show (unknownSizeKeys d) ++
" unknown size"
staleSize :: String -> (Git.Repo -> FilePath) -> Stat
staleSize label dirspec = go =<< lift (dirKeys dirspec)
where
go [] = nostat
go keys = onsize =<< sum <$> keysizes keys
onsize 0 = nostat
onsize size = stat label $
json (++ aside "clean up with git-annex unused") $
return $ roughSize storageUnits False size
keysizes keys = do
dir <- lift $ fromRepo dirspec
liftIO $ forM keys $ \k -> catchDefaultIO 0 $
getFileSize (dir </> keyFile k)
aside :: String -> String
aside s = " (" ++ s ++ ")"
multiLine :: [String] -> String
multiLine = concatMap (\l -> "\n\t" ++ l)