X-Git-Url: http://gitweb.michael.orlitzky.com/?a=blobdiff_plain;f=src%2FMain.hs;h=3ea260642286dc5cc44efa510152eb892c53e271;hb=44e4325046b133ccda1f8548515641602d223ddb;hp=e94d21b4fa7e264d39469daec8ad730a8838895f;hpb=ce611b60b9c42e176b215453f0d0f862d2d5d0fd;p=dead%2Fhtsn-import.git diff --git a/src/Main.hs b/src/Main.hs index e94d21b..3ea2606 100644 --- a/src/Main.hs +++ b/src/Main.hs @@ -1,119 +1,53 @@ +{-# LANGUAGE NoMonomorphismRestriction #-} module Main where import Control.Arrow ( (&&&), arr, returnA ) import Control.Monad ( when ) -import Control.Monad.IO.Class ( liftIO ) -import Database.Groundhog.Core ( PersistEntity ) +import Control.Monad.IO.Class ( MonadIO, liftIO ) +import Database.Groundhog.Generic ( runDbConn ) import Database.Groundhog.Sqlite ( - defaultMigrationLogger, - insert, - migrate, - runDbConn, - runMigration, withSqliteConn ) -import Data.Maybe ( isNothing ) +import Database.Groundhog.Postgresql ( + withPostgresqlConn ) import Data.Monoid ( (<>) ) +import Network.Services.TSN.Logging ( init_logging ) 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 ) + runX ) +import Backend ( Backend(..) ) import CommandLine ( get_args ) import Configuration ( Configuration(..), merge_optional ) -import ExitCodes ( - exit_no_connection_string, - exit_no_xml_files ) -import Network.Services.TSN.Logging ( init_logging ) +import ConnectionString ( ConnectionString(..) ) +import ExitCodes ( exit_no_xml_files ) import qualified OptionalConfiguration as OC ( - OptionalConfiguration ( connection_string, xml_files ), + 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 'XmlTree' argument 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 - -> XmlTree - -> IO (Maybe Int) -- ^ Return the number of records inserted. -import_generic dummy g xml = - withSqliteConn "foo.sqlite3" $ runDbConn $ do - runMigration defaultMigrationLogger $ do - 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 (\l -> insert l) (g elt) - return $ Just (length ids) - --- | Import TSN.Injuries from an 'XmlTree'. -import_injuries :: XmlTree -> IO (Maybe Int) -import_injuries = - import_generic - (undefined :: Injuries.Listing) - Injuries.listings - --- | Import TSN.InjuriesDetail from an 'XmlTree'. -import_injuries_detail :: XmlTree -> IO (Maybe Int) -import_injuries_detail = - import_generic - (undefined :: InjuriesDetail.PlayerListing) - ( (concatMap InjuriesDetail.player_listings) . InjuriesDetail.listings) - -import_file :: FilePath -> IO () -import_file path = do +import TSN.DbImport +import qualified TSN.XML.Injuries as Injuries ( Listing ) +import qualified TSN.XML.InjuriesDetail as InjuriesDetail ( PlayerListing ) +import qualified TSN.XML.News as News ( Message ) +import Xml ( parse_opts ) + + + +import_file :: Configuration -> FilePath -> IO () +import_file cfg path = do results <- catchIOError parse_and_import (\e -> do @@ -151,19 +85,39 @@ import_file path = do -- big one outside of the list. parse_and_import :: IO [Maybe Int] parse_and_import = - (runX $ readA >>> (doctypeA &&& returnA) >>> (arr import_with_dtd)) + 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 xml - | dtd == "Injuries_Detail_XML.dtd" = import_injuries_detail xml - | otherwise = do - report_info $ "Unrecognized DTD in " ++ path ++ ": " ++ dtd ++ "." - return Nothing + import_with_dtd (dtd,xml) = + -- We need NoMonomorphismRestriction here. + if backend cfg == Postgres + then withPostgresqlConn cs $ runDbConn $ importer xml + else withSqliteConn cs $ runDbConn $ importer xml + where + -- | Pull the real connection String out of the configuration. + cs :: String + cs = get_connection_string $ connection_string cfg + + importer + | dtd == "injuriesxml.dtd" = + dbimport (undefined :: Injuries.Listing) + + | dtd == "Injuries_Detail_XML.dtd" = + dbimport (undefined :: InjuriesDetail.PlayerListing) + + | dtd == "newsxml.dtd" = + dbimport (undefined :: News.Message) + + | otherwise = \_ -> do -- Dummy arg simplifies the other cases. + let errmsg = "Unrecognized DTD in " ++ path ++ ": " ++ dtd ++ "." + liftIO $ report_info errmsg + return Nothing + + main :: IO () main = do @@ -186,13 +140,6 @@ main = do report_error "No XML files given." exitWith (ExitFailure exit_no_xml_files) - -- There's a default connection string, namely the empty string, but - -- it's not much use to us. So we make sure that we were given - -- something explicitly. - when (isNothing (OC.connection_string opt_config)) $ do - report_error "No connection string supplied." - exitWith (ExitFailure exit_no_connection_string) - -- We don't do this in parallel (for now?) to keep the error -- messages nice and linear. - mapM_ import_file (OC.xml_files opt_config) + mapM_ (import_file cfg) (OC.xml_files opt_config)