+{-# LANGUAGE NoMonomorphismRestriction #-}
module Main
where
-import Text.Show.Pretty ( ppShow )
-import Text.XML.HXT.Core
+import Control.Arrow ( (&&&), arr, returnA )
+import Control.Monad ( when )
+import Control.Monad.IO.Class ( liftIO )
+import Database.Groundhog (
+ defaultMigrationLogger,
+ insert,
+ migrate,
+ runMigration )
+import Database.Groundhog.Core ( PersistEntity )
+import Database.Groundhog.Generic ( runDbConn )
+import Database.Groundhog.Sqlite (
+ withSqliteConn )
+import Database.Groundhog.Postgresql (
+ withPostgresqlConn )
+import Data.Monoid ( (<>) )
+import System.Console.CmdArgs ( def )
+import System.Exit ( exitWith, ExitCode (ExitFailure) )
+import System.IO.Error ( catchIOError )
+import Text.XML.HXT.Core (
+ ArrowXml,
+ IOStateArrow,
+ SysConfigList,
+ XmlPickler,
+ XmlTree,
+ (>>>),
+ (/>),
+ getAttrl,
+ getText,
+ hasName,
+ no,
+ readDocument,
+ runX,
+ unpickleDoc,
+ withPreserveComment,
+ withRemoveWS,
+ withSubstDTDEntities,
+ withValidate,
+ xpickle,
+ yes )
-import qualified TSN.Injuries as Injuries
+import Backend ( Backend(..) )
+import CommandLine ( get_args )
+import Configuration ( Configuration(..), merge_optional )
+import ConnectionString ( ConnectionString(..) )
+import ExitCodes ( exit_no_xml_files )
+import Network.Services.TSN.Logging ( init_logging )
+import qualified OptionalConfiguration as OC (
+ OptionalConfiguration ( xml_files ),
+ from_rc )
+import Network.Services.TSN.Report (
+ report_info,
+ report_error )
+import qualified TSN.Injuries as Injuries (
+ Listing,
+ Message ( listings ) )
+import qualified TSN.InjuriesDetail as InjuriesDetail (
+ Listing ( player_listings ),
+ Message ( listings ),
+ PlayerListing )
+
+-- | A list of options passed to 'readDocument' when we parse an XML
+-- document. We don't validate because the DTDs from TSN are
+-- wrong. As a result, we don't want to keep useless DTDs
+-- areound. Thus we disable 'withSubstDTDEntities' which, when
+-- combined with "withValidate no", prevents HXT from trying to read
+-- the DTD at all.
+--
+parse_opts :: SysConfigList
+parse_opts =
+ [ withPreserveComment no,
+ withRemoveWS yes,
+ withSubstDTDEntities no,
+ withValidate no ]
+
+
+-- | We put the 'Configuration' and 'XmlTree' arguments last so that
+-- it's easy to eta reduce all of the import_foo functions that call
+-- this.
+--
+import_generic :: (XmlPickler a, PersistEntity b)
+ => b -- ^ Dummy Listing instance needed for 'migrate'
+ -> (a -> [b]) -- ^ listings getter
+ -> Configuration
+ -> XmlTree
+ -> IO (Maybe Int) -- ^ Return the number of records inserted.
+import_generic dummy g cfg xml
+ | backend cfg == Postgres = withPostgresqlConn cs go
+ | otherwise = withSqliteConn cs go
+ where
+ -- | Pull the real connection String out of the configuration.
+ cs :: String
+ cs = get_connection_string $ connection_string cfg
+
+ -- Needs NoMonomorphismRestriction to be allowed to return
+ -- different types in the two cases above.
+ go = runDbConn $ do
+ runMigration defaultMigrationLogger $ migrate dummy
+ let root_element = unpickleDoc xpickle xml
+ case root_element of
+ Nothing -> do
+ let msg = "Could not unpickle document in import_generic."
+ liftIO $ report_error msg
+ return Nothing
+ Just elt -> do
+ ids <- mapM insert (g elt)
+ return $ Just (length ids)
+
+
+
+-- | Import TSN.Injuries from an 'XmlTree'.
+import_injuries :: Configuration -> XmlTree -> IO (Maybe Int)
+import_injuries =
+ import_generic
+ (undefined :: Injuries.Listing)
+ Injuries.listings
+
+-- | Import TSN.InjuriesDetail from an 'XmlTree'.
+import_injuries_detail :: Configuration -> XmlTree -> IO (Maybe Int)
+import_injuries_detail =
+ import_generic
+ (undefined :: InjuriesDetail.PlayerListing)
+ ( (concatMap InjuriesDetail.player_listings) . InjuriesDetail.listings)
+
+import_file :: Configuration -> FilePath -> IO ()
+import_file cfg path = do
+ results <- catchIOError
+ parse_and_import
+ (\e -> do
+ report_error (show e)
+ report_error $ "Failed to import file " ++ path ++ "."
+ -- Return a nonempty list so we don't claim incorrectly that
+ -- we couldn't parse the DTD.
+ return [ Nothing ] )
+
+ case results of
+ -- If results' is empty, one of the arrows return "nothing."
+ [] -> report_error $ "Unable to determine DTD for file " ++ path ++ "."
+ (r:_) ->
+ case r of
+ Nothing -> return ()
+ Just cnt -> report_info $ "Successfully imported " ++
+ (show cnt) ++
+ " records from " ++ path ++ "."
+ where
+ -- | An arrow that reads a document into an 'XmlTree'.
+ readA :: IOStateArrow s a XmlTree
+ readA = readDocument parse_opts path
+
+ -- | An arrow which parses the doctype "SYSTEM" of an 'XmlTree'.
+ -- We use these to determine the parser to use.
+ doctypeA :: ArrowXml a => a XmlTree String
+ doctypeA = getAttrl >>> hasName "doctype-SYSTEM" /> getText
+
+ -- | Combine the arrows above as well as the function below
+ -- (arrowized with 'arr') into an IO action that does everything
+ -- (parses and then runs the import on what was parsed).
+ --
+ -- The result of runX has type IO [IO (Maybe Int)]. We thus use
+ -- bind (>>=) and sequence to combine all of the IOs into one
+ -- big one outside of the list.
+ parse_and_import :: IO [Maybe Int]
+ parse_and_import =
+ runX (readA >>> (doctypeA &&& returnA) >>> (arr import_with_dtd))
+ >>=
+ sequence
+
+ -- | Takes a 'Doctype', 'XmlTree' pair and uses the 'Doctype' to
+ -- determine which function to call on the 'XmlTree'.
+ import_with_dtd :: (String, XmlTree) -> IO (Maybe Int)
+ import_with_dtd (dtd,xml)
+ | dtd == "injuriesxml.dtd" = import_injuries cfg xml
+ | dtd == "Injuries_Detail_XML.dtd" = import_injuries_detail cfg xml
+ | otherwise = do
+ report_info $ "Unrecognized DTD in " ++ path ++ ": " ++ dtd ++ "."
+ return Nothing
+
main :: IO ()
main = do
- res <- runX ( xunpickleDocument Injuries.pickle_message
- [ withValidate no
- , withTrace 1
- , withRemoveWS yes
- , withPreserveComment no
- ] "test/xml/injuriesxml.xml" )
- putStr $ ppShow res
+ rc_cfg <- OC.from_rc
+ cmd_cfg <- get_args
+
+ -- Merge the config file options with the command-line ones,
+ -- prefering the command-line ones.
+ let opt_config = rc_cfg <> cmd_cfg
+
+ -- Update a default config with any options that have been set in
+ -- either the config file or on the command-line. We initialize
+ -- logging before the missing parameter checks below so that we can
+ -- log the errors.
+ let cfg = (def :: Configuration) `merge_optional` opt_config
+ init_logging (log_file cfg) (log_level cfg) (syslog cfg)
+
+ -- Check the optional config for missing required options.
+ when (null $ OC.xml_files opt_config) $ do
+ report_error "No XML files given."
+ exitWith (ExitFailure exit_no_xml_files)
+
+ -- We don't do this in parallel (for now?) to keep the error
+ -- messages nice and linear.
+ mapM_ (import_file cfg) (OC.xml_files opt_config)
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