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Of course, the commands you use may +be called something other than `show w' and `show c'; they could even be +mouse-clicks or menu items--whatever suits your program. + +You should also get your employer (if you work as a programmer) or your +school, if any, to sign a "copyright disclaimer" for the program, if +necessary. Here is a sample; alter the names: + + Yoyodyne, Inc., hereby disclaims all copyright interest in the program + `Gnomovision' (which makes passes at compilers) written by James Hacker. + + , 1 April 1989 + Ty Coon, President of Vice + +This General Public License does not permit incorporating your program into +proprietary programs. If your program is a subroutine library, you may +consider it more useful to permit linking proprietary applications with the +library. If this is what you want to do, use the GNU Library General +Public License instead of this License. diff --git a/Main.hs b/Main.hs new file mode 100644 --- /dev/null +++ b/Main.hs @@ -0,0 +1,54 @@ +{-# LANGUAGE OverloadedStrings #-} +{-# LANGUAGE DeriveDataTypeable #-} +{- +geniserver +Copyright (C) 2011 Eric Kow (on behalf of SRI) + +This program is free software; you can redistribute it and/or +modify it under the terms of the GNU General Public License +as published by the Free Software Foundation; either version 2 +of the License, or (at your option) any later version. + +This program is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +GNU General Public License for more details. + +You should have received a copy of the GNU General Public License +along with this program; if not, write to the Free Software +Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +-} + +module Main (main) where + +import Data.Maybe ( fromMaybe ) +import System.Environment + +import Snap.Http.Server + +import NLP.GenI.General ( ePutStrLn ) +import NLP.GenI +import NLP.GenI.Configuration +import NLP.GenI.Server +import NLP.GenI.Server.Flag +import qualified NLP.GenI.Configuration as G + +main :: IO () +main = do + pname <- getProgName + confArgs <- treatArgs serverOptions =<< getArgs + let has = flip hasFlag confArgs + case () of + _ | has HelpFlg -> putStrLn (usage serverOptionsSections pname) + | otherwise -> startServer confArgs + +startServer :: G.Params -> IO () +startServer confArgs = do + pst <- initialise confArgs + wrangler <- defaultCustomSem pst + ePutStrLn ("Listening on port: " ++ show port) + httpServe (setPort port defaultConfig) $ + application reqMaxSz pst wrangler + where + port = fromMaybe defaultPort (getFlag PortFlg confArgs) + reqMaxSz = fromMaybe defaultReqMaxSize (getFlag ReqMaxSizeFlg confArgs) diff --git a/Setup.hs b/Setup.hs new file mode 100644 --- /dev/null +++ b/Setup.hs @@ -0,0 +1,2 @@ +import Distribution.Simple +main = defaultMain diff --git a/geniserver.cabal b/geniserver.cabal new file mode 100644 --- /dev/null +++ b/geniserver.cabal @@ -0,0 +1,39 @@ +Name: geniserver +Version: 0.8 +License: GPL +License-file: LICENSE +Author: Eric Kow +Synopsis: Simple HTTP server for GenI results +Description: Simple HTTP server for GenI results +Maintainer: geni-users@loria.fr +Build-type: Simple +Category: Natural Language Processing +Cabal-Version: >=1.8 + +Library + Exposed-Modules: NLP.GenI.Server + , NLP.GenI.Server.Instruction + , NLP.GenI.Server.Flag + + Build-Depends: base < 5 + , bytestring >= 0.9 + , cmdargs >= 0.7 + , snap-core + , http-types + , json >= 0.4.3 && < 0.6 + , transformers + , utf8-string >= 0.3.5 && < 0.4 + , text < 1.0 + , GenI >= 0.19.0 && < 0.26 + Ghc-options: -Wall + Hs-Source-Dirs: src + +Executable geniserver + Main-Is: Main.hs + Ghc-options: -Wall + Build-Depends: base < 5 + , geniserver + , GenI >= 0.19.0 && < 0.26 + , snap-core + , snap-server + , text < 1.0 diff --git a/src/NLP/GenI/Server.hs b/src/NLP/GenI/Server.hs new file mode 100644 --- /dev/null +++ b/src/NLP/GenI/Server.hs @@ -0,0 +1,124 @@ +{-# LANGUAGE DeriveDataTypeable #-} +{-# LANGUAGE OverloadedStrings #-} +{-# LANGUAGE ViewPatterns #-} +-- geniserver +-- Copyright (C) 2011 Eric Kow (Computational Linguistics Ltd) +-- +-- This program is free software; you can redistribute it and/or +-- modify it under the terms of the GNU General Public License +-- as published by the Free Software Foundation; either version 2 +-- of the License, or (at your option) any later version. +-- +-- This program is distributed in the hope that it will be useful, +-- but WITHOUT ANY WARRANTY; without even the implied warranty of +-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +-- GNU General Public License for more details. +-- +-- You should have received a copy of the GNU General Public License +-- along with this program; if not, write to the Free Software +-- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + +module NLP.GenI.Server where + +import Control.Applicative ((<$>)) +import Control.Monad.IO.Class (liftIO) +import Control.Monad.Trans.Error (runErrorT) +import qualified Data.ByteString.Lazy as B +import Data.Int +import Data.IORef +import Data.Text (Text) +import qualified Data.Text as T +import qualified Data.Text.Lazy as TL +import qualified Data.Text.Lazy.Encoding as TL + +import Snap.Core +import qualified Text.JSON as J +import qualified Text.JSON.Pretty as J + +import NLP.GenI +import NLP.GenI.Configuration +import qualified NLP.GenI.Configuration as G +import NLP.GenI.LexicalSelection (CustomSem (..)) +import NLP.GenI.Pretty +import NLP.GenI.Server.Flag +import NLP.GenI.Server.Instruction +import NLP.GenI.Simple.SimpleBuilder + +initialise :: G.Params -> IO ProgState +initialise confArgs = do + pstRef <- newIORef (emptyProgState $ setFlag FromStdinFlg () confArgs) + _ <- loadGeniMacros pstRef + _ <- loadLexicon pstRef + readIORef pstRef + +data GenReq = Dump | Normal + +parseInstruction :: J.JSON j => B.ByteString -> Either String j +parseInstruction = J.resultToEither . J.decode . TL.unpack . TL.decodeUtf8 + +application :: Int64 -- ^ maximum request size (see 'defaultReqMaxSize') + -> ProgState + -> CustomSem sem + -> Snap () +application reqMaxSz pst wrangler = + route [ ("dump", handle Dump) + , ("" , handle Normal) + ] + where + handle ty = do + bss <- readRequestBody reqMaxSz + let input = parseInstruction bss + case input of + Left e -> err (T.pack e) + Right j -> do + me <- liftIO (handleRequest pst wrangler j) + case me of + Right p -> ok ty p + Left e -> err e + +ok :: GenReq -> GeniResults -> Snap () +ok Dump j = do + modifyResponse (setContentType "application/json") + writeText $ prettyEncode j +ok Normal j = do + modifyResponse (setContentType "text/plain") + writeText $ showResults (grResults j) + +err :: T.Text -> Snap () +err x = do + modifyResponse (setResponseCode 400) + writeText x + withResponse finishWith + +-- ---------------------------------------------------------------------- +-- +-- ---------------------------------------------------------------------- + +showResults :: [GeniResult] -> T.Text +showResults xs = T.unlines . concat $ + [ grRealisations g | GSuccess g <- xs ] + +handleRequest :: ProgState -> CustomSem sem -> ServerInstruction -> IO (Either Text GeniResults) +handleRequest pst wrangler instr = do + conf <- treatArgsWithParams optionsForRequest params (pa pst) + case customSemParser wrangler semStr of + Left e -> return (Left e) + Right csem -> do + -- do the realisation + let helper builder = simplifyResults <$> (runErrorT $ runGeni pst wrangler builder csem) + results <- case getBuilderType conf of + SimpleBuilder -> helper simpleBuilder_2p + SimpleOnePhaseBuilder -> helper simpleBuilder_1p + return (Right results) + where + params = gParams instr + semStr = wrapSem . T.pack $ gSemantics instr + wrapSem (T.strip -> x) = + if "semantics:[" `T.isInfixOf` x + then x + else "semantics:" <> squares x + +-- ---------------------------------------------------------------------- + +prettyEncode :: J.JSON a => a -> T.Text +prettyEncode = T.pack . J.render . J.pp_value . J.showJSON diff --git a/src/NLP/GenI/Server/Flag.hs b/src/NLP/GenI/Server/Flag.hs new file mode 100644 --- /dev/null +++ b/src/NLP/GenI/Server/Flag.hs @@ -0,0 +1,69 @@ +{-# LANGUAGE DeriveDataTypeable #-} +{-# LANGUAGE OverloadedStrings #-} +-- geniserver +-- Copyright (C) 2011 Eric Kow (Computational Linguistics Ltd) +-- +-- This program is free software; you can redistribute it and/or +-- modify it under the terms of the GNU General Public License +-- as published by the Free Software Foundation; either version 2 +-- of the License, or (at your option) any later version. +-- +-- This program is distributed in the hope that it will be useful, +-- but WITHOUT ANY WARRANTY; without even the implied warranty of +-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +-- GNU General Public License for more details. +-- +-- You should have received a copy of the GNU General Public License +-- along with this program; if not, write to the Free Software +-- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + + +module NLP.GenI.Server.Flag where + +import Data.Int + +import NLP.GenI.Configuration +import NLP.GenI.General (snd3) + +serverOptions :: [OptDescr Flag] +serverOptions = nubBySwitches (concatMap snd3 serverOptionsSections) + +type OptSection = (String,[OptDescr Flag],[String]) + +serverOptionsSections :: [OptSection] +serverOptionsSections = + [ ("Core options", optionsForServer, []) + , ("Input", optionsForInputFiles, []) + , ("Algorithm", + (nubBySwitches $ optionsForBuilder ++ optionsForOptimisation), + []) + , ("Morphology", optionsForMorphology, []) + , ("Client parameters", optionsForRequest, ["Subset of parameters the client can pass in"]) + ] + +optionsForServer :: [OptDescr Flag] +optionsForServer = + [ helpOption, verboseOption + , macrosOption, lexiconOption + , Option [] ["port"] (reqArg PortFlg read "INT") + ("port to listen on (default " ++ show defaultPort ++ ")") + , Option [] ["host"] (reqArg HostFlg id "HOST") + ("which host to bind (default " ++ defaultHost ++ ")") + ] + +data PortFlg = PortFlg Int deriving (Eq, Show, Typeable) +data HostFlg = HostFlg String deriving (Eq, Show, Typeable) +data ReqMaxSizeFlg = ReqMaxSizeFlg Int64 deriving (Eq, Show, Typeable) + +defaultHost :: String +defaultHost = "127.0.0.1" + +defaultPort :: Int +defaultPort = 4364 + +defaultReqMaxSize :: Int64 +defaultReqMaxSize = 4194304 + +optionsForRequest :: [OptDescr Flag] +optionsForRequest = + optionsForBuilder ++ optionsForOptimisation diff --git a/src/NLP/GenI/Server/Instruction.hs b/src/NLP/GenI/Server/Instruction.hs new file mode 100644 --- /dev/null +++ b/src/NLP/GenI/Server/Instruction.hs @@ -0,0 +1,40 @@ +-- geniserver +-- Copyright (C) 2011 Eric Kow (Computational Linguistics Ltd) +-- +-- This program is free software; you can redistribute it and/or +-- modify it under the terms of the GNU General Public License +-- as published by the Free Software Foundation; either version 2 +-- of the License, or (at your option) any later version. +-- +-- This program is distributed in the hope that it will be useful, +-- but WITHOUT ANY WARRANTY; without even the implied warranty of +-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +-- GNU General Public License for more details. +-- +-- You should have received a copy of the GNU General Public License +-- along with this program; if not, write to the Free Software +-- Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + +module NLP.GenI.Server.Instruction (ServerInstruction(..)) +where + +import Control.Applicative ( (<$>), (<*>) ) +import Text.JSON + +data ServerInstruction = ServerInstruction + { gParams :: [String] + , gSemantics :: String + } + +instance JSON ServerInstruction where + readJSON j = do + jo <- fromJSObject `fmap` readJSON j + let fieldOr def x = maybe def readJSON (lookup x jo) + fieldOrNull = fieldOr (return []) + field x = fieldOr (fail $ "Could not find: " ++ x) x + ServerInstruction <$> fieldOrNull "params" + <*> field "semantics" + showJSON x = JSObject . toJSObject $ + [ ("params", showJSONs $ gParams x) + , ("semantics", showJSON $ gSemantics x) + ]