summaryrefslogtreecommitdiff
path: root/Command/Status.hs
blob: 7bb4dc8ca51b665fdac13fea5ce49f23a8feb3d3 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
{- git-annex command
 -
 - Copyright 2011 Joey Hess <joey@kitenet.net>
 -
 - Licensed under the GNU GPL version 3 or higher.
 -}

{-# LANGUAGE BangPatterns #-}

module Command.Status where

import Control.Monad.State.Strict
import qualified Data.Map as M
import Text.JSON

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 qualified Annex
import Command
import Utility.DataUnits
import Utility.DiskFree
import Annex.Content
import Types.Key
import Backend
import Logs.UUID
import Logs.Trust
import Remote
import Config
import Utility.Percentage
import Logs.Transfer

-- 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
	}

-- cached info that multiple Stats use
data StatInfo = StatInfo
	{ presentData :: Maybe KeyData
	, referencedData :: Maybe KeyData
	}

-- a state monad for running Stats in
type StatState = StateT StatInfo Annex

def :: [Command]
def = [command "status" paramNothing 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.
 -}
fast_stats :: [Stat]
fast_stats = 
	[ supported_backends
	, supported_remote_types
	, remote_list Trusted "trusted"
	, remote_list SemiTrusted "semitrusted"
	, remote_list UnTrusted "untrusted"
	, remote_list DeadTrusted "dead"
	, transfer_list
	, disk_size
	]
slow_stats :: [Stat]
slow_stats = 
	[ tmp_size
	, bad_data_size
	, local_annex_keys
	, local_annex_size
	, known_annex_keys
	, known_annex_size
	, bloom_info
	, backend_usage
	]

start :: CommandStart
start = do
	fast <- Annex.getState Annex.fast
	let stats = if fast then fast_stats else fast_stats ++ slow_stats
	showCustom "status" $ do
		evalStateT (mapM_ showStat stats) (StatInfo Nothing Nothing)
		return True
	stop

stat :: String -> (String -> StatState String) -> Stat
stat desc a = return $ Just (desc, a desc)

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

supported_backends :: Stat
supported_backends = stat "supported backends" $ json unwords $
	return $ map B.name Backend.list

supported_remote_types :: Stat
supported_remote_types = stat "supported remote types" $ json unwords $
	return $ map R.typename Remote.remoteTypes

remote_list :: TrustLevel -> String -> Stat
remote_list level desc = stat n $ nojson $ lift $ do
	us <- 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 = desc ++ " repositories"
	
local_annex_size :: Stat
local_annex_size = stat "local annex size" $ json id $
	showSizeKeys <$> cachedPresentData

local_annex_keys :: Stat
local_annex_keys = stat "local annex keys" $ json show $
	countKeys <$> cachedPresentData

known_annex_size :: Stat
known_annex_size = stat "known annex size" $ json id $
	showSizeKeys <$> cachedReferencedData

known_annex_keys :: Stat
known_annex_keys = stat "known annex keys" $ json show $
	countKeys <$> cachedReferencedData

tmp_size :: Stat
tmp_size = staleSize "temporary directory size" gitAnnexTmpDir

bad_data_size :: Stat
bad_data_size = staleSize "bad keys size" gitAnnexBadDir

bloom_info :: Stat
bloom_info = stat "bloom filter size" $ json id $ 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
	if null ts
		then return "none"
		else return $ pp uuidmap "" $ sort ts
	where
		pp _ c [] = c
		pp uuidmap c ((t, i):xs) = "\n\t" ++ line uuidmap t i ++ pp uuidmap c xs
		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 = stat "available local disk space" $ json id $ lift $
	calcfree
		<$> getDiskReserve
		<*> 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 a b = pp "" $ reverse . sort $ map swap $ M.toList $ M.unionWith (+) a b
		pp c [] = c
		pp c ((n, b):xs) = "\n\t" ++ b ++ ": " ++ show n ++ pp c xs
		swap (a, b) = (b, a)

cachedPresentData :: StatState KeyData
cachedPresentData = do
	s <- get
	case presentData s of
		Just v -> return v
		Nothing -> do
			v <- foldKeys <$> lift getKeysPresent
			put s { presentData = Just v }
			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

emptyKeyData :: KeyData
emptyKeyData = KeyData 0 0 0 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

showSizeKeys :: KeyData -> String
showSizeKeys d = total ++ missingnote
	where
		total = roughSize storageUnits False $ sizeKeys d
		missingnote
			| unknownSizeKeys d == 0 = ""
			| otherwise = aside $
				"+ " ++ show (unknownSizeKeys d) ++
				" keys of unknown size"

staleSize :: String -> (Git.Repo -> FilePath) -> Stat
staleSize label dirspec = go =<< lift (Command.Unused.staleKeys 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 = map (fromIntegral . fileSize) <$> stats keys
		stats keys = do
			dir <- lift $ fromRepo dirspec
			liftIO $ forM keys $ \k ->
				getFileStatus (dir </> keyFile k)

aside :: String -> String
aside s = " (" ++ s ++ ")"