4b6fabae65
Avoids this contradiction: (Auto enabling special remote foo...) Not enabling compute special remote c2 because [..]
578 lines
19 KiB
Haskell
578 lines
19 KiB
Haskell
{- Compute remote.
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-
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- Copyright 2025 Joey Hess <id@joeyh.name>
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-
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- Licensed under the GNU AGPL version 3 or higher.
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-}
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{-# LANGUAGE OverloadedStrings #-}
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module Remote.Compute (
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remote,
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isComputeRemote,
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ComputeState(..),
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setComputeState,
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getComputeState,
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computeStateUrl,
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ComputeProgram,
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getComputeProgram,
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runComputeProgram,
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ImmutableState(..),
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computationBehaviorChangeError,
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defaultComputeParams,
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) where
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import Annex.Common
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import qualified Annex
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import Types.Remote
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import Types.ProposedAccepted
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import Types.MetaData
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import Types.Creds
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import Config
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import Config.Cost
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import Remote.Helper.Special
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import Remote.Helper.ExportImport
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import Remote.List.Util
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import Annex.SpecialRemote.Config
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import Annex.UUID
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import Annex.Content
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import Annex.Tmp
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import Annex.GitShaKey
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import Annex.CatFile
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import qualified Annex.Transfer
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import Logs.MetaData
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import Logs.EquivilantKeys
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import Logs.Location
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import Utility.Metered
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import Utility.TimeStamp
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import Utility.Env
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import Utility.Tmp.Dir
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import Utility.Url
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import Utility.MonotonicClock
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import Types.Key
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import Backend
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import qualified Git
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import qualified Utility.FileIO as F
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import qualified Utility.SimpleProtocol as Proto
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import Network.HTTP.Types.URI
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import Data.Time.Clock
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import Text.Read
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import qualified Data.Map as M
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import qualified Data.Set as S
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import qualified Data.ByteString as B
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import qualified Data.Text as T
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import qualified Data.Text.Encoding as T
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remote :: RemoteType
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remote = RemoteType
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{ typename = "compute"
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, enumerate = const $ findSpecialRemotes "compute"
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, generate = gen
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, configParser = computeConfigParser
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, setup = setupInstance
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, exportSupported = exportUnsupported
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, importSupported = importUnsupported
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, thirdPartyPopulated = False
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}
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isComputeRemote :: Remote -> Bool
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isComputeRemote r = typename (remotetype r) == typename remote
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gen :: Git.Repo -> UUID -> RemoteConfig -> RemoteGitConfig -> RemoteStateHandle -> Annex (Maybe Remote)
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gen r u rc gc rs = case getComputeProgram' rc of
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Left _err -> return Nothing
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Right program -> do
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c <- parsedRemoteConfig remote rc
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cst <- remoteCost gc c veryExpensiveRemoteCost
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return $ Just $ mk program c cst
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where
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mk program c cst = Remote
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{ uuid = u
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, cost = cst
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, name = Git.repoDescribe r
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, storeKey = storeKeyUnsupported
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, retrieveKeyFile = computeKey rs program
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, retrieveKeyFileInOrder = pure True
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, retrieveKeyFileCheap = Nothing
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, retrievalSecurityPolicy = RetrievalAllKeysSecure
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, removeKey = dropKey rs
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, lockContent = Nothing
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, checkPresent = checkKey rs
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, checkPresentCheap = False
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, exportActions = exportUnsupported
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, importActions = importUnsupported
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, whereisKey = Nothing
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, remoteFsck = Nothing
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, repairRepo = Nothing
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, config = c
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, gitconfig = gc
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, localpath = Nothing
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, getRepo = return r
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, readonly = True
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, appendonly = False
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, untrustworthy = False
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, availability = pure LocallyAvailable
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, remotetype = remote
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, mkUnavailable = return Nothing
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, getInfo = return []
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, claimUrl = Nothing
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, checkUrl = Nothing
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, remoteStateHandle = rs
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}
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setupInstance :: SetupStage -> Maybe UUID -> Maybe CredPair -> RemoteConfig -> RemoteGitConfig -> Annex (RemoteConfig, UUID)
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setupInstance ss mu _ c _ = do
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ComputeProgram program <- either giveup return $ getComputeProgram' c
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allowedprograms <- maybe [] words . annexAllowedComputePrograms
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<$> Annex.getGitConfig
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case ss of
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Init -> noop
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_ -> unless (program `elem` allowedprograms) $ do
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let remotename = fromMaybe "(unknown)" (lookupName c)
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giveup $ unwords
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[ "Unable to enable compute special remote"
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, remotename
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, "because its compute program"
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, program
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, "is not listed in annex.security-allowed-compute-programs"
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]
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unlessM (liftIO $ inSearchPath program) $
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giveup $ "Cannot find " ++ program ++ " in PATH"
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u <- maybe (liftIO genUUID) return mu
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gitConfigSpecialRemote u c [("compute", "true")]
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return (c, u)
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computeConfigParser :: RemoteConfig -> Annex RemoteConfigParser
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computeConfigParser _ = return $ RemoteConfigParser
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{ remoteConfigFieldParsers =
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[ optionalStringParser programField
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(FieldDesc $ "compute program (must start with \"" ++ safetyPrefix ++ "\")")
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]
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-- Pass through all other params, which git-annex addcomputed adds
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-- to the input params.
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, remoteConfigRestPassthrough = Just
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( const True
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, [("*", FieldDesc "all other parameters are passed to compute program")]
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)
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}
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defaultComputeParams :: Remote -> [String]
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defaultComputeParams = map mk . M.toList . getRemoteConfigPassedThrough . config
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where
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mk (f, v) = fromProposedAccepted f ++ '=' : v
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newtype ComputeProgram = ComputeProgram String
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deriving (Show)
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getComputeProgram :: Remote -> Annex ComputeProgram
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getComputeProgram r =
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case getComputeProgram' (unparsedRemoteConfig (config r)) of
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Right program -> return program
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Left err -> giveup $
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"Problem with the configuration of compute remote " ++ name r ++ ": " ++ err
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getComputeProgram' :: RemoteConfig -> Either String ComputeProgram
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getComputeProgram' c = case fromProposedAccepted <$> M.lookup programField c of
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Just program
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| safetyPrefix `isPrefixOf` program ->
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Right (ComputeProgram program)
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| otherwise -> Left $
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"The program's name must begin with \"" ++ safetyPrefix ++ "\""
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Nothing -> Left "Specify program="
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-- Limiting the program to "git-annex-compute-" prefix is important for
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-- security, it prevents autoenabled compute remotes from running arbitrary
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-- programs.
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safetyPrefix :: String
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safetyPrefix = "git-annex-compute-"
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programField :: RemoteConfigField
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programField = Accepted "program"
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data ProcessCommand
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= ProcessInput FilePath
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| ProcessOutput FilePath
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| ProcessReproducible
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| ProcessProgress PercentFloat
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deriving (Show, Eq)
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instance Proto.Receivable ProcessCommand where
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parseCommand "INPUT" = Proto.parse1 ProcessInput
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parseCommand "OUTPUT" = Proto.parse1 ProcessOutput
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parseCommand "REPRODUCIBLE" = Proto.parse0 ProcessReproducible
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parseCommand "PROGRESS" = Proto.parse1 ProcessProgress
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parseCommand _ = Proto.parseFail
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newtype PercentFloat = PercentFloat Float
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deriving (Show, Eq)
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instance Proto.Serializable PercentFloat where
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serialize (PercentFloat p) = show p
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deserialize s = PercentFloat <$> readMaybe s
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data ComputeState = ComputeState
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{ computeParams :: [String]
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, computeInputs :: M.Map OsPath Key
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, computeOutputs :: M.Map OsPath (Maybe Key)
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, computeSubdir :: OsPath
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, computeReproducible :: Bool
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}
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deriving (Show, Eq)
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{- Formats a ComputeState as an URL query string.
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-
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- Prefixes computeParams with 'p', computeInputs with 'i',
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- and computeOutputs with 'o'. Uses "d" for computeSubdir.
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-
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- When the passed Key is an output, rather than duplicate it
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- in the query string, that output has no value.
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-
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- Example: "psomefile&pdestfile&pbaz&isomefile=WORM--foo&odestfile=&d=subdir"
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-
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- The computeParams are in the order they were given. The computeInputs
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- and computeOutputs are sorted in ascending order for stability.
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-}
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formatComputeState :: Key -> ComputeState -> B.ByteString
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formatComputeState k = formatComputeState' (Just k)
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formatComputeState' :: Maybe Key -> ComputeState -> B.ByteString
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formatComputeState' mk st = renderQuery False $ concat
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[ map formatparam (computeParams st)
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, map formatinput (M.toAscList (computeInputs st))
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, mapMaybe formatoutput (M.toAscList (computeOutputs st))
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, [("d", Just (fromOsPath (computeSubdir st)))]
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]
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where
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formatparam p = ("p" <> encodeBS p, Nothing)
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formatinput (file, key) =
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("i" <> fromOsPath file, Just (serializeKey' key))
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formatoutput (file, (Just key)) = Just $
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("o" <> fromOsPath file,
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if Just key == mk
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then Nothing
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else Just (serializeKey' key)
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)
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formatoutput (_, Nothing) = Nothing
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parseComputeState :: Key -> B.ByteString -> Maybe ComputeState
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parseComputeState k b =
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let st = go emptycomputestate (parseQuery b)
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in if st == emptycomputestate then Nothing else Just st
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where
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emptycomputestate = ComputeState mempty mempty mempty "." False
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go :: ComputeState -> [QueryItem] -> ComputeState
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go c [] = c { computeParams = reverse (computeParams c) }
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go c ((f, v):rest) =
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let c' = fromMaybe c $ case decodeBS f of
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('p':p) -> Just $ c
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{ computeParams = p : computeParams c
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}
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('i':i) -> do
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key <- deserializeKey' =<< v
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Just $ c
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{ computeInputs =
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M.insert (toOsPath i) key
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(computeInputs c)
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}
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('o':o) -> case v of
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Just kv -> do
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key <- deserializeKey' kv
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Just $ c
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{ computeOutputs =
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M.insert (toOsPath o)
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(Just key)
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(computeOutputs c)
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}
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Nothing -> Just $ c
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{ computeOutputs =
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M.insert (toOsPath o)
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(Just k)
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(computeOutputs c)
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}
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('d':[]) -> do
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subdir <- v
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Just $ c
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{ computeSubdir = toOsPath subdir
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}
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_ -> Nothing
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in go c' rest
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{- A compute: url for a given output file of a computation. -}
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computeStateUrl :: Remote -> ComputeState -> OsPath -> URLString
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computeStateUrl r st p =
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"annex-compute:" ++ fromUUID (uuid r) ++ "/" ++ fromOsPath p ++ "?"
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++ decodeBS (formatComputeState' Nothing st')
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where
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-- Omit computeOutputs, so this gives the same result whether
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-- it's called on a ComputeState with the computeOutputs
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-- Keys populated or not.
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st' = st { computeOutputs = mempty }
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{- The per remote metadata is used to store ComputeState. This allows
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- recording multiple ComputeStates that generate the same key.
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-
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- The metadata fields are numbers (prefixed with "t" to make them legal
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- field names), which are estimates of how long it might take to run
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- the computation (in seconds).
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-}
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setComputeState :: RemoteStateHandle -> Key -> NominalDiffTime -> ComputeState -> Annex ()
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setComputeState rs k ts st = addRemoteMetaData k rs $ MetaData $ M.singleton
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(mkMetaFieldUnchecked $ T.pack ('t':show (truncateResolution 1 ts)))
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(S.singleton (MetaValue (CurrentlySet True) (formatComputeState k st)))
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{- When multiple ComputeStates have been recorded for the same key,
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- this returns one that is probably less expensive to compute,
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- based on the original time it took to compute it. -}
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getComputeState:: RemoteStateHandle -> Key -> Annex (Maybe ComputeState)
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getComputeState rs k = headMaybe . map snd . sortOn fst
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<$> getComputeStatesUnsorted rs k
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getComputeStatesUnsorted :: RemoteStateHandle -> Key -> Annex [(NominalDiffTime, ComputeState)]
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getComputeStatesUnsorted rs k = do
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RemoteMetaData _ (MetaData m) <- getCurrentRemoteMetaData rs k
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return $ go [] (M.toList m)
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where
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go c [] = concat c
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go c ((f, s) : rest) =
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let sts = mapMaybe (parseComputeState k . fromMetaValue)
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(S.toList s)
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in case parsePOSIXTime (T.encodeUtf8 (T.drop 1 (fromMetaField f))) of
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Just ts -> go (zip (repeat ts) sts : c) rest
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Nothing -> go c rest
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computeProgramEnvironment :: ComputeState -> Annex [(String, String)]
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computeProgramEnvironment st = do
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environ <- filter (caninherit . fst) <$> liftIO getEnvironment
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let addenv = mapMaybe go (computeParams st)
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return $ environ ++ addenv
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where
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envprefix = "ANNEX_COMPUTE_"
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caninherit v = not (envprefix `isPrefixOf` v)
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go p
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| '=' `elem` p =
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let (f, v) = separate (== '=') p
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in Just (envprefix ++ f, v)
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| otherwise = Nothing
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newtype ImmutableState = ImmutableState Bool
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runComputeProgram
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:: ComputeProgram
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-> ComputeState
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-> ImmutableState
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-> (OsPath -> Annex (Key, Maybe (Either Git.Sha OsPath)))
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-- ^ get input file's content, or Nothing when adding a computation
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-- without actually performing it
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-> (ComputeState -> OsPath -> NominalDiffTime -> Annex v)
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-> Annex v
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runComputeProgram (ComputeProgram program) state (ImmutableState immutablestate) getinputcontent cont =
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withOtherTmp $ \othertmpdir ->
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withTmpDirIn othertmpdir "compute" go
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where
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go tmpdir = do
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environ <- computeProgramEnvironment state
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subdir <- liftIO $ getsubdir tmpdir
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let pr = (proc program (computeParams state))
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{ cwd = Just (fromOsPath subdir)
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, std_in = CreatePipe
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, std_out = CreatePipe
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, env = Just environ
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}
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showOutput
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starttime <- liftIO currentMonotonicTimestamp
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state' <- bracket
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(liftIO $ createProcess pr)
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(liftIO . cleanupProcess)
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(getinput state tmpdir subdir)
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endtime <- liftIO currentMonotonicTimestamp
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cont state' subdir (calcduration starttime endtime)
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getsubdir tmpdir = do
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let subdir = tmpdir </> computeSubdir state
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ifM (dirContains <$> absPath tmpdir <*> absPath subdir)
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( do
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createDirectoryIfMissing True subdir
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return subdir
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-- Ignore unsafe value in state.
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, return tmpdir
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)
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getinput state' tmpdir subdir p =
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liftIO (hGetLineUntilExitOrEOF (processHandle p) (stdoutHandle p)) >>= \case
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Just l
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| null l -> getinput state' tmpdir subdir p
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| otherwise -> do
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state'' <- parseoutput p tmpdir subdir state' l
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getinput state'' tmpdir subdir p
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Nothing -> do
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liftIO $ hClose (stdoutHandle p)
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liftIO $ hClose (stdinHandle p)
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unlessM (liftIO $ checkSuccessProcess (processHandle p)) $
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giveup $ program ++ " exited unsuccessfully"
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return state'
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parseoutput p tmpdir subdir state' l = case Proto.parseMessage l of
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Just (ProcessInput f) -> do
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let f' = toOsPath f
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let knowninput = M.member f' (computeInputs state')
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checksafefile tmpdir subdir f' "input"
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checkimmutable knowninput "inputting" f' $ do
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(k, inputcontent) <- getinputcontent f'
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mp <- case inputcontent of
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Nothing -> pure Nothing
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Just (Right f'') -> liftIO $
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Just <$> relPathDirToFile subdir f''
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Just (Left gitsha) -> do
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liftIO . F.writeFile (subdir </> f')
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=<< catObject gitsha
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return (Just f')
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liftIO $ hPutStrLn (stdinHandle p) $
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maybe "" fromOsPath mp
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liftIO $ hFlush (stdinHandle p)
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return $ if immutablestate
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then state
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else state'
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{ computeInputs =
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M.insert f' k
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(computeInputs state')
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}
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Just (ProcessOutput f) -> do
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let f' = toOsPath f
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checksafefile tmpdir subdir f' "output"
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let knownoutput = M.member f' (computeOutputs state')
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checkimmutable knownoutput "outputting" f' $
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return $ if immutablestate
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then state
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else state'
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{ computeOutputs =
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M.insert f' Nothing
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(computeOutputs state')
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}
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Just (ProcessProgress percent) -> do
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-- XXX
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return state'
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Just ProcessReproducible ->
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return $ state' { computeReproducible = True }
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Nothing -> giveup $
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program ++ " output included an unparseable line: \"" ++ l ++ "\""
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checksafefile tmpdir subdir f fileaction = do
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let err problem = giveup $
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program ++ " tried to " ++ fileaction ++ " a file that is " ++ problem ++ ": " ++ fromOsPath f
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unlessM (liftIO $ dirContains <$> absPath tmpdir <*> absPath (subdir </> f)) $
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err "outside the git repository"
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when (any (\p -> dropTrailingPathSeparator p == literalOsPath ".git") (splitPath f)) $
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err "inside the .git directory"
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checkimmutable True _ _ a = a
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checkimmutable False requestdesc p a
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| not immutablestate = a
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| otherwise = computationBehaviorChangeError (ComputeProgram program) requestdesc p
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calcduration (MonotonicTimestamp starttime) (MonotonicTimestamp endtime) =
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fromIntegral (endtime - starttime) :: NominalDiffTime
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computationBehaviorChangeError :: ComputeProgram -> String -> OsPath -> Annex a
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computationBehaviorChangeError (ComputeProgram program) requestdesc p =
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giveup $ program ++ " is not behaving the same way it used to, now " ++ requestdesc ++ ": " ++ fromOsPath p
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computeKey :: RemoteStateHandle -> ComputeProgram -> Key -> AssociatedFile -> OsPath -> MeterUpdate -> VerifyConfig -> Annex Verification
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computeKey rs (ComputeProgram program) k _af dest p vc =
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getComputeState rs k >>= \case
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Just state ->
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case computeskey state of
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Just keyfile -> runComputeProgram
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(ComputeProgram program)
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state
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(ImmutableState True)
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(getinputcontent state)
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(go keyfile)
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Nothing -> missingstate
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Nothing -> missingstate
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where
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missingstate = giveup "Missing compute state"
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getinputcontent state f =
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case M.lookup (fromOsPath f) (computeInputs state) of
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Just inputkey -> case keyGitSha inputkey of
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Nothing ->
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let retkey = do
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obj <- calcRepo (gitAnnexLocation inputkey)
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return (inputkey, Just (Right obj))
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in ifM (inAnnex inputkey)
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( retkey
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, do
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getinputcontent' f inputkey
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retkey
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)
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Just gitsha ->
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return (inputkey, Just (Left gitsha))
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Nothing -> error "internal"
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getinputcontent' f inputkey = do
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remotelist <- Annex.getState Annex.remotes
|
|
locs <- loggedLocations inputkey
|
|
rs <- keyPossibilities' (IncludeIgnored False) inputkey locs remotelist
|
|
if null rs
|
|
then return ()
|
|
else void $ firstM (getinputcontentfrom f inputkey) rs
|
|
|
|
-- TODO cycle prevention
|
|
getinputcontentfrom f inputkey r = do
|
|
showAction $ "getting input " <> QuotedPath f
|
|
<> " from " <> UnquotedString (name r)
|
|
Annex.Transfer.download r inputkey (AssociatedFile (Just f))
|
|
Annex.Transfer.stdRetry Annex.Transfer.noNotification
|
|
|
|
computeskey state =
|
|
case M.keys $ M.filter (== Just k) (computeOutputs state) of
|
|
(keyfile : _) -> Just keyfile
|
|
[] -> Nothing
|
|
|
|
go keyfile state tmpdir _ts = do
|
|
hb <- hashBackend
|
|
let updatevurl key getobj =
|
|
if (fromKey keyVariety key == VURLKey)
|
|
then addEquivilantKey hb key =<< getobj
|
|
else return Nothing
|
|
|
|
let keyfile' = tmpdir </> keyfile
|
|
unlessM (liftIO $ doesFileExist keyfile') $
|
|
giveup $ program ++ " exited sucessfully, but failed to write the computed file"
|
|
catchNonAsync (liftIO $ moveFile keyfile' dest)
|
|
(\err -> giveup $ "failed to move the computed file: " ++ show err)
|
|
mverification <- updatevurl k (pure dest)
|
|
|
|
-- Try to move any other computed object files into the annex.
|
|
forM_ (M.toList $ computeOutputs state) $ \case
|
|
(file, (Just key)) ->
|
|
when (k /= key) $ do
|
|
let file' = tmpdir </> file
|
|
whenM (liftIO $ doesFileExist file') $ do
|
|
whenM (verifyKeyContentPostRetrieval RetrievalAllKeysSecure vc MustVerify key file') $ do
|
|
moved <- moveAnnex key file' `catchNonAsync` const (pure False)
|
|
when moved $
|
|
void $ updatevurl key (calcRepo (gitAnnexLocation key))
|
|
_ -> noop
|
|
|
|
-- The program might not be reproducible,
|
|
-- so require strong verification.
|
|
return $ fromMaybe MustVerify mverification
|
|
|
|
-- Make sure that the compute state exists.
|
|
checkKey :: RemoteStateHandle -> Key -> Annex Bool
|
|
checkKey rs k = do
|
|
states <- getComputeStatesUnsorted rs k
|
|
if null states
|
|
then giveup "Missing compute state"
|
|
else return True
|
|
|
|
-- Unsetting the compute state will prevent computing the key.
|
|
dropKey :: RemoteStateHandle -> Maybe SafeDropProof -> Key -> Annex ()
|
|
dropKey rs _ k = do
|
|
RemoteMetaData _ old <- getCurrentRemoteMetaData rs k
|
|
addRemoteMetaData k rs (modMeta old DelAllMeta)
|
|
|
|
storeKeyUnsupported :: Key -> AssociatedFile -> Maybe OsPath -> MeterUpdate -> Annex ()
|
|
storeKeyUnsupported _ _ _ _ = giveup "transfer to compute remote not supported; use git-annex addcomputed instead"
|