-- eidolon -- A simple gallery in Haskell and Yesod -- Copyright (C) 2015 Amedeo Molnár -- -- This program is free software: you can redistribute it and/or modify -- it under the terms of the GNU Affero General Public License as published -- by the Free Software Foundation, either version 3 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 Affero General Public License for more details. -- -- You should have received a copy of the GNU Affero General Public License -- along with this program. If not, see . {-# OPTIONS_GHC -fno-warn-orphans #-} module Application ( getApplicationDev , makeFoundation , develMain , appMain ) where import Import import Yesod.Default.Config2 import Yesod.Default.Handlers import Database.Persist.Sql (runMigration) import Network.HTTP.Client.Conduit (newManager) import Control.Monad import System.Log.FastLogger (newStdoutLoggerSet, defaultBufSize, toLogStr) import Data.Default (def) import Yesod.Core.Types (loggerSet) import Control.Monad.Logger (liftLoc, runLoggingT) import Database.Persist.Postgresql (createPostgresqlPool, runSqlPool, pgConnStr, pgPoolSize) import Language.Haskell.TH.Syntax (qLocation) import Network.Wai.Handler.Warp (Settings, defaultSettings, defaultShouldDisplayException, runSettings, setHost, setOnException, setPort) import Network.Wai.Middleware.RequestLogger (Destination (Logger), IPAddrSource (..), OutputFormat (..), destination, mkRequestLogger, outputFormat) -- Import all relevant handler modules here. -- Don't forget to add new modules to your cabal file! import Handler.Home import Handler.Login import Handler.Profile import Handler.Upload import Handler.NewAlbum import Handler.Album import Handler.Medium import Handler.AlbumSettings import Handler.MediumSettings import Handler.ProfileSettings import Handler.ProfileDelete import Handler.Admin import Handler.AdminProfileSettings import Handler.AdminAlbumSettings import Handler.AdminMediumSettings import Handler.AdminComments import Handler.Tag import Handler.RootFeed import Handler.Search import Handler.About -- This line actually creates our YesodDispatch instance. It is the second half -- of the call to mkYesodData which occurs in Foundation.hs. Please see the -- comments there for more details. mkYesodDispatch "App" resourcesApp -- | This function allocates resources (such as a database connection pool), -- performs initialization and return a foundation datatype value. This is also -- the place to put your migrate statements to have automatic database -- migrations handled by Yesod. makeFoundation :: AppSettings -> IO App makeFoundation appSettings = do -- Some basic initializations: HTTP connection manager, logger, and static -- subsite. appHttpManager <- newManager appLogger <- newStdoutLoggerSet defaultBufSize >>= makeYesodLogger appStatic <- (if appMutableStatic appSettings then staticDevel else static) (appStaticDir appSettings) -- We need a log function to create a connection pool. We need a connection -- pool to create our foundation. And we need our foundation to get a -- logging function. To get out of this loop, we initially create a -- temporary foundation without a real connection pool, get a log function -- from there, and then create the real foundation. let mkFoundation appConnPool = App {..} tempFoundation = mkFoundation $ error "connPool forced in tempFoundation" logFunc = messageLoggerSource tempFoundation appLogger -- Create the database connection pool pool <- flip runLoggingT logFunc $ createPostgresqlPool (pgConnStr $ appDatabaseConf appSettings) (pgPoolSize $ appDatabaseConf appSettings) -- Perform database migration using our application's logging settings. runLoggingT (runSqlPool (runMigration migrateAll) pool) logFunc -- Return the foundation return $ mkFoundation pool -- | Convert our foundation to a WAI Application by calling @toWaiAppPlain@ and -- applyng some additional middlewares. makeApplication :: App -> IO Application makeApplication foundation = do logWare <- mkRequestLogger def { outputFormat = if appDetailedRequestLogging $ appSettings foundation then Detailed True else Apache (if appIpFromHeader $ appSettings foundation then FromFallback else FromSocket) , destination = Logger $ loggerSet $ appLogger foundation } -- Create the WAI application and apply middlewares appPlain <- toWaiAppPlain foundation return $ logWare $ defaultMiddlewaresNoLogging appPlain -- | Warp settings for the given foundation value. warpSettings :: App -> Settings warpSettings foundation = setPort (appPort $ appSettings foundation) $ setHost (appHost $ appSettings foundation) $ setOnException (\_req e -> when (defaultShouldDisplayException e) $ messageLoggerSource foundation (appLogger foundation) $(qLocation >>= liftLoc) "yesod" LevelError (toLogStr $ "Exception from Warp: " ++ show e)) defaultSettings -- | For yesod devel, return the Warp settings and WAI Application. getApplicationDev :: IO (Settings, Application) getApplicationDev = do settings <- loadYamlSettings [configSettingsYml] [] useEnv foundation <- makeFoundation settings app <- makeApplication foundation wsettings <- getDevSettings $ warpSettings foundation return (wsettings, app) -- | main function for use by yesod devel develMain :: IO () develMain = develMainHelper getApplicationDev -- | The @main@ function for an executable running this site. appMain :: IO () appMain = do -- Get the settings from all relevant sources settings <- loadYamlSettingsArgs -- fall back to compile-time values, set to [] to require values at runtime [configSettingsYmlValue] -- allow environment variables to override useEnv -- Generate the foundation from the settings foundation <- makeFoundation settings -- Generate a WAI Application from the foundation app <- makeApplication foundation -- Run the application with Warp runSettings (warpSettings foundation) app