compute special remote mostly implemented
Except for some of the hard parts: progress displays, incremental verification, and getting inputs before running a computation. Untested! In order to test this, git-annex addcomputed needs to be implemented.
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1 changed files with 290 additions and 119 deletions
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@ -5,7 +5,19 @@
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- Licensed under the GNU AGPL version 3 or higher.
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-}
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module Remote.Compute (remote) where
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{-# LANGUAGE OverloadedStrings #-}
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module Remote.Compute (
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remote,
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Interface,
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ComputeState(..),
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setComputeState,
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getComputeStates,
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InterfaceEnv,
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interfaceEnv,
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getComputeProgram,
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runComputeProgram,
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) where
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import Annex.Common
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import Types.Remote
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@ -18,21 +30,23 @@ import Remote.Helper.Special
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import Remote.Helper.ExportImport
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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 Logs.MetaData
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import Utility.Metered
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import Utility.Hash
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import Utility.TimeStamp
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import Git.FilePath
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import Utility.Env
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import qualified Git
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import qualified Utility.SimpleProtocol as Proto
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import Network.HTTP.Types.URI
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import Control.Concurrent.STM
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import Data.Time.Clock
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import Data.Either
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import Data.Char
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import Data.Ord
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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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@ -106,19 +120,20 @@ computeConfigParser :: RemoteConfig -> Annex RemoteConfigParser
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computeConfigParser rc = do
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Interface interface <- case getComputeProgram rc of
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Left _ -> pure $ Interface []
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Right program -> liftIO (getInterfaceUncached program) >>= return . \case
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Right program -> liftIO (getInterface program) >>= return . \case
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Left _ -> Interface []
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Right interface -> interface
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let m = M.fromList $ mapMaybe collectfields interface
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let ininterface f = case toField (fromProposedAccepted f) of
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Just f' -> M.member f' m
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Nothing -> False
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let ininterface f = M.member (Field (fromProposedAccepted f)) m
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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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, remoteConfigRestPassthrough = Just (ininterface, M.toList $ M.mapKeys fromField m)
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, remoteConfigRestPassthrough = Just
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( ininterface
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, M.toList $ M.mapKeys fromField m
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)
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}
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where
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collectfields (InterfaceInput f d) = Just (f, FieldDesc d)
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@ -150,7 +165,7 @@ programField = Accepted "program"
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type Description = String
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newtype Field = Field MetaField
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newtype Field = Field { fromField :: String }
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deriving (Show, Eq, Ord)
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data InterfaceItem
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@ -175,23 +190,33 @@ instance Proto.Receivable InterfaceItem where
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parseCommand "VALUE?" = Proto.parse2 InterfaceOptionalValue
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parseCommand "OUTPUT" = Proto.parse2 InterfaceOutput
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parseCommand "REPRODUCIBLE" = Proto.parse0 InterfaceReproducible
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parseCommand _ = Proto.parseFail
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data ProcessOutput
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= Computing Field FilePath
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| Progress PercentFloat
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deriving (Show, Eq)
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instance Proto.Receivable ProcessOutput where
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parseCommand "COMPUTING" = Proto.parse2 Computing
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parseCommand "PROGRESS" = Proto.parse1 Progress
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parseCommand _ = Proto.parseFail
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instance Proto.Serializable Field where
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serialize = fromField
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deserialize = toField
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deserialize = Just . Field
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-- While MetaField is case insensitive, environment variable names are not,
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-- so make Field always lower cased.
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toField :: String -> Maybe Field
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toField f = Field <$> toMetaField (T.pack (map toLower f))
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newtype PercentFloat = PercentFloat Float
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deriving (Show, Eq)
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fromField :: Field -> String
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fromField (Field f) = T.unpack (fromMetaField f)
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instance Proto.Serializable PercentFloat where
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serialize (PercentFloat p) = show p
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deserialize s = PercentFloat <$> readMaybe s
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getInterface :: ComputeProgram -> TMVar (Maybe Interface) -> IO (Either String Interface)
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getInterface program iv =
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getInterfaceCached :: ComputeProgram -> TMVar (Maybe Interface) -> IO (Either String Interface)
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getInterfaceCached program iv =
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atomically (takeTMVar iv) >>= \case
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Nothing -> getInterfaceUncached program >>= \case
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Nothing -> getInterface program >>= \case
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Left err -> do
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atomically $ putTMVar iv Nothing
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return (Left err)
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@ -202,8 +227,8 @@ getInterface program iv =
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atomically $ putTMVar iv (Just interface)
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return (Right interface)
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getInterfaceUncached :: ComputeProgram -> IO (Either String Interface)
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getInterfaceUncached (ComputeProgram program) =
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getInterface :: ComputeProgram -> IO (Either String Interface)
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getInterface (ComputeProgram program) =
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catchMaybeIO (readProcess program ["interface"]) >>= \case
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Nothing -> return $ Left $ "Failed to run " ++ program
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Just output -> return $ case parseInterface output of
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@ -235,148 +260,294 @@ data ComputeState = ComputeState
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{ computeInputs :: M.Map Field ComputeInput
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, computeValues :: M.Map Field ComputeValue
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, computeOutputs :: M.Map Field ComputeOutput
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, computeTimeEstimate :: NominalDiffTime
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}
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deriving (Show, Eq)
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-- Generates a hash of a ComputeState.
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--
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-- This is used as a short unique identifier in the metadata fields,
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-- since more than one ComputeState may be stored in the compute remote's
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-- metadata for a given Key.
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--
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-- A md5 is fine for this. It does not need to protect against intentional
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-- collisions. And 2^64 is a sufficiently small chance of accidental
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-- collision.
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hashComputeState :: ComputeState -> String
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hashComputeState state = show $ md5s $
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mconcat (map (go goi) (M.toAscList (computeInputs state)))
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<>
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mconcat (map (go gov) (M.toAscList (computeValues state)))
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<>
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mconcat (map (go goo) (M.toAscList (computeOutputs state)))
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<>
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encodeBS (show (computeTimeEstimate state))
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{- Formats a ComputeState as an URL query string.
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-
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- Prefixes fields with "k" and "f" for computeInputs, with
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- "v" for computeValues and "o" for computeOutputs.
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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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- Fields in the query string are sorted. This is in order to ensure
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- that the same ComputeState is always formatted the same way.
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-
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- Example: "ffoo=somefile&kfoo=WORM--foo&oresult&vbar=11"
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-}
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formatComputeState :: Key -> ComputeState -> B.ByteString
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formatComputeState k st = renderQuery False $ sortOn fst $ concat
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[ concatMap formatinput $ M.toList (computeInputs st)
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, map formatvalue $ M.toList (computeValues st)
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, map formatoutput $ M.toList (computeOutputs st)
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]
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where
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go c (Field f, v) = T.encodeUtf8 (fromMetaField f) <> c v
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goi (ComputeInput k f) = serializeKey' k <> encodeBS f
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gov (ComputeValue s) = encodeBS s
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goo (ComputeOutput k) = serializeKey' k
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computeStateMetaData :: ComputeState -> MetaData
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computeStateMetaData = undefined
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-- FIXME: Need to unswizzle the mixed up metadata based on hash prefixes.
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metaDataComputeStates :: MetaData -> [ComputeState]
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metaDataComputeStates (MetaData m) =
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go (ComputeState mempty mempty mempty 0) (M.toList m)
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formatinput (f, ComputeInput key file) =
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[ ("k" <> fb, Just (serializeKey' key))
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, ("f" <> fb, Just (toRawFilePath file))
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]
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where
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go c ((f,v):rest) =
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let c' = case T.unpack (fromMetaField f) of
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('i':'n':'p':'u':'t':'-':f') -> case M.lookup m =<< toMetaField (T.pack ("key-" ++ f')) of
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Nothing -> c
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Just kv -> case deserializeKey' (fromMetaValue kv) of
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Just k -> c
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fb = encodeBS (fromField f)
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formatvalue (f, ComputeValue v) =
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("v" <> encodeBS (fromField f), Just (encodeBS v))
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formatoutput (f, ComputeOutput key) =
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("o" <> encodeBS (fromField f),
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if key == k
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then Nothing
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else Just (serializeKey' key)
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)
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parseComputeState :: Key -> B.ByteString -> Maybe ComputeState
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parseComputeState k b =
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let q = parseQuery b
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st = go emptycomputestate (M.fromList q) q
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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
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go c _ [] = c
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go c m ((f, v):rest) =
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let c' = fromMaybe c $ case decodeBS f of
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('f':f') -> do
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file <- fromRawFilePath <$> v
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kv <- M.lookup (encodeBS ('k':f')) m
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key <- deserializeKey' =<< kv
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Just $ c
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{ computeInputs =
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M.insert (toField f)
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(ComputeInput k (decodeBS (fromMetaValue v)))
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(computeOutputs c)
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M.insert (Field f')
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(ComputeInput key file)
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(computeInputs c)
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}
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Nothing -> c
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('v':'a':'l':'u':'e':'-':f') -> c
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('v':f') -> do
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val <- decodeBS <$> v
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Just $ c
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{ computeValues =
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M.insert (toField f)
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(ComputeValue (decodeBS (fromMetaValue v)))
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M.insert (Field f')
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(ComputeValue val)
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(computeValues c)
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}
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('o':'u':'t':'p':'u':'t':'-':f') ->
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case deserializeKey' (fromMetaValue v) of
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Just k -> c
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('o':f') -> 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 (toField f)
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M.insert (Field f')
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(ComputeOutput 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 (Field f')
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(ComputeOutput k)
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(computeOutputs c)
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}
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Nothing -> c
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('t':'i':'m':'e':'-':f') ->
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case parsePOSIXTime (fromMetaValue v) of
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Just t -> c { computeTimeEstimate = t }
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Nothing -> c
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_ -> c
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in go c' rest
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_ -> Nothing
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in go c' m rest
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getComputeStates :: RemoteStateHandle -> Key -> Annex [ComputeState]
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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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getComputeStates :: RemoteStateHandle -> Key -> Annex [(NominalDiffTime, ComputeState)]
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getComputeStates rs k = do
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RemoteMetaData _ m <- getCurrentRemoteMetaData rs k
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return (metaDataComputeStates m)
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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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setComputeState :: RemoteStateHandle -> Key -> ComputeState -> Annex ()
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setComputeState rs k st = addRemoteMetaData k rs (computeStateMetaData st)
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data InterfaceEnv = InterfaceEnv [(String, Either Key String)]
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data InterfaceOutputs = InterfaceOutputs (M.Map Field Key)
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{- Finds the first compute state that provides everything required by the
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- interface, and returns a list of what should be provided to the program
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- in its environment.
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- in its environment, and what outputs the program is expected to make.
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-}
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interfaceEnv :: [ComputeState] -> Interface -> Either String [(String, Either Key String)]
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interfaceEnv :: [ComputeState] -> Interface -> Either String (InterfaceEnv, InterfaceOutputs)
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interfaceEnv states interface = go Nothing states
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where
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go (Just firsterr) [] = Left firsterr
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go Nothing [] = interfaceEnv' (ComputeState mempty mempty mempty 0) interface
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go Nothing [] = interfaceEnv' (ComputeState mempty mempty mempty) interface
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go firsterr (state:rest) = case interfaceEnv' state interface of
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Right v -> Right v
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Left e
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| null rest -> Left (fromMaybe e firsterr)
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| otherwise -> go (firsterr <|> Just e) rest
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interfaceEnv' :: ComputeState -> Interface -> Either String [(String, Either Key String)]
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interfaceEnv' state (Interface interface) =
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case partitionEithers (mapMaybe go interface) of
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([], env) -> Right $
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map (\(f, v) -> (fromField f, v)) env
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interfaceEnv' :: ComputeState -> Interface -> Either String (InterfaceEnv, InterfaceOutputs)
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interfaceEnv' state interface@(Interface i) =
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case partitionEithers (mapMaybe go i) of
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([], r) -> Right
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( InterfaceEnv (map (\(f, v) -> (fromField f, v)) r)
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, interfaceOutputs state interface
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)
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(problems, _) -> Left $ unlines problems
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where
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go (InterfaceInput name desc) =
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case M.lookup name (computeInputs state) of
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go (InterfaceInput field desc) =
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case M.lookup field (computeInputs state) of
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Just (ComputeInput key _file) -> Just $
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Right (name, Left key)
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Right (field, Left key)
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Nothing -> Just $
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Left $ "Missing required input \"" ++ fromField name ++ "\" -- " ++ desc
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go (InterfaceOptionalInput name desc) =
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case M.lookup name (computeInputs state) of
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Left $ "Missing required input \"" ++ fromField field ++ "\" -- " ++ desc
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go (InterfaceOptionalInput field _desc) =
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case M.lookup field (computeInputs state) of
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Just (ComputeInput key _file) -> Just $
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Right (name, Left key)
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Right (field, Left key)
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Nothing -> Nothing
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go (InterfaceValue name desc) =
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case M.lookup name (computeValues state) of
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go (InterfaceValue field desc) =
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case M.lookup field (computeValues state) of
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Just (ComputeValue v) -> Just $
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Right (name, Right v)
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nothing -> Just $
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Left $ "Missing required value \"" ++ fromField name ++ "\" -- " ++ desc
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go (InterfaceOptionalValue name desc) =
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case M.lookup name (computeValues state) of
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Right (field, Right v)
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Nothing -> Just $
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Left $ "Missing required value \"" ++ fromField field ++ "\" -- " ++ desc
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go (InterfaceOptionalValue field _desc) =
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case M.lookup field (computeValues state) of
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Just (ComputeValue v) -> Just $
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Right (name, Right v)
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Right (field, Right v)
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Nothing -> Nothing
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go (InterfaceOutput _ _) = Nothing
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go InterfaceReproducible = Nothing
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interfaceOutputs :: ComputeState -> Interface -> InterfaceOutputs
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interfaceOutputs state (Interface interface) =
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InterfaceOutputs $ M.fromList $ mapMaybe go interface
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where
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go (InterfaceOutput field _) = do
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ComputeOutput key <- M.lookup field (computeOutputs state)
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Just (field, key)
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go _ = Nothing
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computeProgramEnvironment :: InterfaceEnv -> Annex [(String, String)]
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computeProgramEnvironment (InterfaceEnv ienv) = do
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environ <- filter (caninherit . fst) <$> liftIO getEnvironment
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interfaceenv <- mapM go ienv
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return $ environ ++ interfaceenv
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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 (f, Right v) = return (envprefix ++ f, v)
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go (f, Left k) =
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ifM (inAnnex k)
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( do
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objloc <- calcRepo (gitAnnexLocation k)
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return (envprefix ++ f, fromOsPath objloc)
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, giveup "missing an input to the computation"
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)
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runComputeProgram
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:: ComputeProgram
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-> Key
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-> AssociatedFile
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-> OsPath
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-> MeterUpdate
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-> VerifyConfig
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-> (InterfaceEnv, InterfaceOutputs)
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-> Annex Verification
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runComputeProgram (ComputeProgram program) k _af dest p vc (ienv, InterfaceOutputs iout) = do
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environ <- computeProgramEnvironment ienv
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withOtherTmp $ \tmpdir ->
|
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go environ tmpdir
|
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`finally` liftIO (removeDirectoryRecursive tmpdir)
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where
|
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go environ tmpdir = do
|
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let pr = (proc program [])
|
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{ cwd = Just $ fromOsPath tmpdir
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, std_out = CreatePipe
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, env = Just environ
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}
|
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computing <- liftIO $ withCreateProcess pr $
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processoutput mempty tmpdir
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finish computing tmpdir
|
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|
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processoutput computing tmpdir _ (Just h) _ pid =
|
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hGetLineUntilExitOrEOF pid h >>= \case
|
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Just l
|
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| null l -> processoutput computing tmpdir Nothing (Just h) Nothing pid
|
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| otherwise -> parseoutput computing l >>= \case
|
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Just computing' ->
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processoutput computing' tmpdir Nothing (Just h) Nothing pid
|
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Nothing -> do
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hClose h
|
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ifM (checkSuccessProcess pid)
|
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( giveup $ program ++ " output included an unparseable line: \"" ++ l ++ "\""
|
||||
, giveup $ program ++ " exited unsuccessfully"
|
||||
)
|
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Nothing -> do
|
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hClose h
|
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unlessM (checkSuccessProcess pid) $
|
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giveup $ program ++ " exited unsuccessfully"
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return computing
|
||||
processoutput _ _ _ _ _ _ = error "internal"
|
||||
|
||||
parseoutput computing l = case Proto.parseMessage l of
|
||||
Just (Computing field file) ->
|
||||
case M.lookup field iout of
|
||||
Just key -> do
|
||||
when (key == k) $
|
||||
-- XXX can start watching the file and updating progess now
|
||||
return ()
|
||||
return $ Just $
|
||||
M.insert key (toRawFilePath file) computing
|
||||
Nothing -> return (Just computing)
|
||||
Just (Progress percent) -> do
|
||||
-- XXX
|
||||
return Nothing
|
||||
Nothing -> return Nothing
|
||||
|
||||
finish computing tmpdir = do
|
||||
case M.lookup k computing of
|
||||
Nothing -> giveup $ program ++ " exited successfully, but failed to output a filename"
|
||||
Just file -> do
|
||||
let file' = tmpdir </> file
|
||||
unlessM (liftIO $ doesFileExist file') $
|
||||
giveup $ program ++ " exited sucessfully, but failed to write the computed file"
|
||||
catchNonAsync (liftIO $ moveFile file' dest)
|
||||
(\err -> giveup $ "failed to move the computed file: " ++ show err)
|
||||
|
||||
-- Try to move any other computed object files into the annex.
|
||||
forM_ (M.toList computing) $ \(key, file) ->
|
||||
when (k /= key) $ do
|
||||
let file' = tmpdir </> file
|
||||
whenM (liftIO $ doesFileExist file') $
|
||||
whenM (verifyKeyContentPostRetrieval RetrievalAllKeysSecure vc verification k file') $
|
||||
void $ tryNonAsync $ moveAnnex k file'
|
||||
|
||||
return verification
|
||||
|
||||
-- The program might not be reproducible, so require strong
|
||||
-- verification.
|
||||
verification = MustVerify
|
||||
|
||||
computeKey :: RemoteStateHandle -> ComputeProgram -> TMVar (Maybe Interface) -> Key -> AssociatedFile -> OsPath -> MeterUpdate -> VerifyConfig -> Annex Verification
|
||||
computeKey rs program iv k _af dest p vc =
|
||||
liftIO (getInterface program iv) >>= \case
|
||||
computeKey rs program iv k af dest p vc =
|
||||
liftIO (getInterfaceCached program iv) >>= \case
|
||||
Left err -> giveup err
|
||||
Right interface -> do
|
||||
states <- sortBy (comparing computeTimeEstimate)
|
||||
states <- map snd . sortOn fst
|
||||
<$> getComputeStates rs k
|
||||
case interfaceEnv states interface of
|
||||
Left err -> giveup err
|
||||
Right ienv -> undefined -- TODO
|
||||
either giveup (runComputeProgram program k af dest p vc)
|
||||
(interfaceEnv states interface)
|
||||
|
||||
-- Make sure that the compute state has everything needed by
|
||||
-- the program's current interface.
|
||||
checkKey :: RemoteStateHandle -> ComputeProgram -> TMVar (Maybe Interface) -> Key -> Annex Bool
|
||||
checkKey rs program iv k = do
|
||||
states <- getComputeStates rs k
|
||||
liftIO (getInterface program iv) >>= \case
|
||||
states <- map snd <$> getComputeStates rs k
|
||||
liftIO (getInterfaceCached program iv) >>= \case
|
||||
Left err -> giveup err
|
||||
Right interface ->
|
||||
case interfaceEnv states interface of
|
||||
|
|
Loading…
Add table
Add a link
Reference in a new issue