src/Gargantext/API/Prelude.hs

   1 {-|
   2 Module      : Gargantext.API.Prelude
   3 Description : Server API main Types
   4 Copyright   : (c) CNRS, 2017-Present
   5 License     : AGPL + CECILL v3
   6 Maintainer  : team@gargantext.org
   7 Stability   : experimental
   8 Portability : POSIX
   9
  10 -}
  11
  12 {-# LANGUAGE ConstraintKinds        #-}
  13 {-# LANGUAGE FunctionalDependencies #-}
  14 {-# LANGUAGE TemplateHaskell        #-}
  15 {-# LANGUAGE TypeOperators          #-}
  16 {-# LANGUAGE UndecidableInstances   #-}
  17
  18 module Gargantext.API.Prelude
  19   ( module Gargantext.API.Prelude
  20   , HasServerError(..)
  21   , serverError
  22   )
  23   where
  24
  25 import Control.Concurrent (threadDelay)
  26 import Control.Exception (Exception)
  27 import Control.Lens (Prism', (#))
  28 import Control.Lens.TH (makePrisms)
  29 import Control.Monad.Error.Class (MonadError(throwError))
  30 import Control.Monad.Except (ExceptT)
  31 import Control.Monad.Reader (ReaderT)
  32 import Crypto.JOSE.Error as Jose
  33 import Data.Aeson.Types
  34 import Data.Typeable
  35 import Data.Validity
  36 import Gargantext.API.Admin.Orchestrator.Types
  37 import Gargantext.API.Admin.Settings
  38 import Gargantext.API.Ngrams
  39 import Gargantext.Core.Types
  40 import Gargantext.Database.Prelude
  41 import Gargantext.Database.Query.Table.Node.Error (NodeError(..), HasNodeError(..))
  42 import Gargantext.Database.Query.Tree
  43 import Gargantext.Prelude
  44 import Servant
  45 import Servant.Job.Async (HasJobEnv)
  46 import Servant.Job.Core (HasServerError(..), serverError)
  47
  48 class HasJoseError e where
  49   _JoseError :: Prism' e Jose.Error
  50
  51 joseError :: (MonadError e m, HasJoseError e) => Jose.Error -> m a
  52 joseError = throwError . (_JoseError #)
  53
  54 class ThrowAll' e a | a -> e where
  55   -- | 'throwAll' is a convenience function to throw errors across an entire
  56   -- sub-API
  57   --
  58   --
  59   -- > throwAll err400 :: Handler a :<|> Handler b :<|> Handler c
  60   -- >    == throwError err400 :<|> throwError err400 :<|> err400
  61   throwAll' :: e -> a
  62
  63 instance (ThrowAll' e a, ThrowAll' e b) => ThrowAll' e (a :<|> b) where
  64   throwAll' e = throwAll' e :<|> throwAll' e
  65
  66 -- Really this shouldn't be necessary - ((->) a) should be an instance of
  67 -- MonadError, no?
  68 instance {-# OVERLAPPING #-} ThrowAll' e b => ThrowAll' e (a -> b) where
  69   throwAll' e = const $ throwAll' e
  70
  71 instance {-# OVERLAPPABLE #-} (MonadError e m) => ThrowAll' e (m a) where
  72   throwAll' = throwError
  73
  74 type GargServerC env err m =
  75     ( CmdM         env err m
  76     , HasNodeError     err
  77     , HasInvalidError  err
  78     , HasTreeError     err
  79     , HasServerError   err
  80     , HasJoseError     err
  81     , ToJSON           err -- TODO this is arguable
  82     , Exception        err
  83     , HasRepo      env
  84     , HasSettings  env
  85     , HasJobEnv    env JobLog JobLog
  86     )
  87
  88 type GargServerT env err m api = GargServerC env err m => ServerT api m
  89
  90 type GargServer api =
  91   forall env err m. GargServerT env err m api
  92
  93 -- This is the concrete monad. It needs to be used as little as possible,
  94 -- instead, prefer GargServer, GargServerT, GargServerC.
  95 type GargServerM env err = ReaderT env (ExceptT err IO)
  96
  97 type EnvC env =
  98   ( HasConnectionPool env
  99   , HasRepo env
 100   , HasSettings env
 101   , HasJobEnv env JobLog JobLog
 102   )
 103
 104 -------------------------------------------------------------------
 105 runCmdReplEasy :: Cmd' DevEnv GargError a -> IO a
 106 runCmdReplEasy f = withDevEnv "gargantext.ini" $ \env -> runCmdDev env f
 107
 108 -------------------------------------------------------------------
 109 -- | This Type is needed to prepare the function before the GargServer
 110 type GargNoServer' env err m =
 111   ( CmdM           env err m
 112   , HasRepo        env
 113   , HasSettings    env
 114   , HasNodeError       err
 115   )
 116
 117 type GargNoServer t =
 118   forall env err m. GargNoServer' env err m => m t
 119 -------------------------------------------------------------------
 120
 121 data GargError
 122   = GargNodeError    NodeError
 123   | GargTreeError    TreeError
 124   | GargInvalidError Validation
 125   | GargJoseError    Jose.Error
 126   | GargServerError  ServerError
 127   deriving (Show, Typeable)
 128
 129 makePrisms ''GargError
 130
 131 instance ToJSON GargError where
 132   toJSON _ = String "SomeGargErrorPleaseReport"
 133
 134 instance Exception GargError
 135
 136 instance HasNodeError GargError where
 137   _NodeError = _GargNodeError
 138
 139 instance HasInvalidError GargError where
 140   _InvalidError = _GargInvalidError
 141
 142 instance HasTreeError GargError where
 143   _TreeError = _GargTreeError
 144
 145 instance HasServerError GargError where
 146   _ServerError = _GargServerError
 147
 148 instance HasJoseError GargError where
 149   _JoseError = _GargJoseError
 150
 151
 152 ------------------------------------------------------------------------
 153 -- | Utils
 154 -- | Simulate logs
 155 simuLogs  :: MonadBase IO m
 156          => (JobLog -> m ())
 157          -> Int
 158          -> m JobLog
 159 simuLogs logStatus t = do
 160   _ <- mapM (\n -> simuTask logStatus n t) $ take t [0,1..]
 161   pure $ JobLog { _scst_succeeded = Just t
 162                 , _scst_failed    = Just 0
 163                 , _scst_remaining = Just 0
 164                 , _scst_events    = Just []
 165                 }
 166
 167 simuTask :: MonadBase IO m
 168           => (JobLog -> m ())
 169           -> Int
 170           -> Int
 171           -> m ()
 172 simuTask logStatus cur total = do
 173   _ <- liftBase $ threadDelay (m*5)
 174     where m = (10 :: Int) ^ (6 :: Int)
 175
 176   let status =  JobLog { _scst_succeeded = Just cur
 177                        , _scst_failed    = Just 0
 178                        , _scst_remaining = (-) <$> Just total <*> Just cur
 179                        , _scst_events    = Just []
 180                        }
 181   printDebug "status" status
 182   logStatus status
 183