1 {-# LANGUAGE NoMonomorphismRestriction #-}
5 import Control.Arrow ( (&&&), arr, returnA )
6 import Control.Monad ( when )
7 import Control.Monad.IO.Class ( liftIO )
8 import Database.Groundhog (
9 defaultMigrationLogger,
13 import Database.Groundhog.Core ( PersistEntity )
14 import Database.Groundhog.Generic ( runDbConn )
15 import Database.Groundhog.Sqlite (
17 import Database.Groundhog.Postgresql (
19 import Data.Monoid ( (<>) )
20 import System.Console.CmdArgs ( def )
21 import System.Exit ( exitWith, ExitCode (ExitFailure) )
22 import System.IO.Error ( catchIOError )
23 import Text.XML.HXT.Core (
38 import Backend ( Backend(..) )
39 import CommandLine ( get_args )
40 import Configuration ( Configuration(..), merge_optional )
41 import ConnectionString ( ConnectionString(..) )
42 import ExitCodes ( exit_no_xml_files )
43 import Network.Services.TSN.Logging ( init_logging )
44 import qualified OptionalConfiguration as OC (
45 OptionalConfiguration ( xml_files ),
47 import Network.Services.TSN.Report (
50 import qualified TSN.Injuries as Injuries (
52 Message ( listings ) )
53 import qualified TSN.InjuriesDetail as InjuriesDetail (
54 Listing ( player_listings ),
57 import Xml ( parse_opts )
60 -- | We put the 'Configuration' and 'XmlTree' arguments last so that
61 -- it's easy to eta reduce all of the import_foo functions that call
64 import_generic :: (XmlPickler a, PersistEntity b)
65 => b -- ^ Dummy Listing instance needed for 'migrate'
66 -> (a -> [b]) -- ^ listings getter
69 -> IO (Maybe Int) -- ^ Return the number of records inserted.
70 import_generic dummy g cfg xml
71 | backend cfg == Postgres = withPostgresqlConn cs go
72 | otherwise = withSqliteConn cs go
74 -- | Pull the real connection String out of the configuration.
76 cs = get_connection_string $ connection_string cfg
78 -- Needs NoMonomorphismRestriction to be allowed to return
79 -- different types in the two cases above.
81 runMigration defaultMigrationLogger $ migrate dummy
82 let root_element = unpickleDoc xpickle xml
85 let msg = "Could not unpickle document in import_generic."
86 liftIO $ report_error msg
89 ids <- mapM insert (g elt)
90 return $ Just (length ids)
94 -- | Import TSN.Injuries from an 'XmlTree'.
95 import_injuries :: Configuration -> XmlTree -> IO (Maybe Int)
98 (undefined :: Injuries.Listing)
101 -- | Import TSN.InjuriesDetail from an 'XmlTree'.
102 import_injuries_detail :: Configuration -> XmlTree -> IO (Maybe Int)
103 import_injuries_detail =
105 (undefined :: InjuriesDetail.PlayerListing)
106 ( (concatMap InjuriesDetail.player_listings) . InjuriesDetail.listings)
108 import_file :: Configuration -> FilePath -> IO ()
109 import_file cfg path = do
110 results <- catchIOError
113 report_error (show e)
114 report_error $ "Failed to import file " ++ path ++ "."
115 -- Return a nonempty list so we don't claim incorrectly that
116 -- we couldn't parse the DTD.
120 -- If results' is empty, one of the arrows return "nothing."
121 [] -> report_error $ "Unable to determine DTD for file " ++ path ++ "."
125 Just cnt -> report_info $ "Successfully imported " ++
127 " records from " ++ path ++ "."
129 -- | An arrow that reads a document into an 'XmlTree'.
130 readA :: IOStateArrow s a XmlTree
131 readA = readDocument parse_opts path
133 -- | An arrow which parses the doctype "SYSTEM" of an 'XmlTree'.
134 -- We use these to determine the parser to use.
135 doctypeA :: ArrowXml a => a XmlTree String
136 doctypeA = getAttrl >>> hasName "doctype-SYSTEM" /> getText
138 -- | Combine the arrows above as well as the function below
139 -- (arrowized with 'arr') into an IO action that does everything
140 -- (parses and then runs the import on what was parsed).
142 -- The result of runX has type IO [IO (Maybe Int)]. We thus use
143 -- bind (>>=) and sequence to combine all of the IOs into one
144 -- big one outside of the list.
145 parse_and_import :: IO [Maybe Int]
147 runX (readA >>> (doctypeA &&& returnA) >>> (arr import_with_dtd))
151 -- | Takes a 'Doctype', 'XmlTree' pair and uses the 'Doctype' to
152 -- determine which function to call on the 'XmlTree'.
153 import_with_dtd :: (String, XmlTree) -> IO (Maybe Int)
154 import_with_dtd (dtd,xml)
155 | dtd == "injuriesxml.dtd" = import_injuries cfg xml
156 | dtd == "Injuries_Detail_XML.dtd" = import_injuries_detail cfg xml
158 report_info $ "Unrecognized DTD in " ++ path ++ ": " ++ dtd ++ "."
166 -- Merge the config file options with the command-line ones,
167 -- prefering the command-line ones.
168 let opt_config = rc_cfg <> cmd_cfg
170 -- Update a default config with any options that have been set in
171 -- either the config file or on the command-line. We initialize
172 -- logging before the missing parameter checks below so that we can
174 let cfg = (def :: Configuration) `merge_optional` opt_config
175 init_logging (log_file cfg) (log_level cfg) (syslog cfg)
177 -- Check the optional config for missing required options.
178 when (null $ OC.xml_files opt_config) $ do
179 report_error "No XML files given."
180 exitWith (ExitFailure exit_no_xml_files)
182 -- We don't do this in parallel (for now?) to keep the error
183 -- messages nice and linear.
184 mapM_ (import_file cfg) (OC.xml_files opt_config)