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Start working on multiple data backends

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This commit is contained in:
Mats Rauhala
2018-10-18 00:12:30 +03:00
parent 8733c4d1d1
commit 6cabe97b30
2 changed files with 7 additions and 5 deletions
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8
backend/src/Datastore.hs
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@ -31,11 +31,11 @@ instance MonadDS AppM where
putLocal :: ( MonadIO m
, HasField "config" r r config config
, HasField "store" config config store store
, HasField "path" store store Text Text
, HasType Text store
, MonadReader r m)
=> ByteString -> m (Digest SHA256)
putLocal bs = do
store :: FilePath <- unpack <$> view (field @"config" . field @"store" . field @"path")
store :: FilePath <- unpack <$> view (field @"config" . field @"store" . typed @Text)
liftIO $ createDirectoryIfMissing True store
let key = hashWith SHA256 bs
writeFile (store </> show key) bs
@ -44,11 +44,11 @@ putLocal bs = do
getLocal :: ( MonadIO m
, HasField "config" r r config config
, HasField "store" config config store store
, HasField "path" store store Text Text
, HasType Text store
, MonadReader r m)
=> Digest SHA256 -> m (Maybe ByteString)
getLocal key = do
store <- unpack <$> view (field @"config" . field @"store" . field @"path")
store <- unpack <$> view (field @"config" . field @"store" . typed @Text)
liftIO $ createDirectoryIfMissing True store
let file = store </> show key
exists <- liftIO $ doesFileExist file