@@ -1,12 +1,10 @@
1{-# LANGUAGE AllowAmbiguousTypes #-}
1{-# LANGUAGE AllowAmbiguousTypes #-}
2{-# LANGUAGE ConstraintKinds #-}
2{-# LANGUAGE ConstraintKinds #-}
4{-# LANGUAGE DataKinds #-}
3{-# LANGUAGE DataKinds #-}
5{-# LANGUAGE DeriveDataTypeable #-}
4{-# LANGUAGE DeriveDataTypeable #-}
6{-# LANGUAGE FlexibleContexts #-}
5{-# LANGUAGE FlexibleContexts #-}
7{-# LANGUAGE FlexibleInstances #-}
6{-# LANGUAGE FlexibleInstances #-}
8{-# LANGUAGE InstanceSigs #-}
7{-# LANGUAGE InstanceSigs #-}
9−{-# LANGUAGE LambdaCase #-}
10{-# LANGUAGE MultiParamTypeClasses #-}
8{-# LANGUAGE MultiParamTypeClasses #-}
11{-# LANGUAGE OverloadedStrings #-}
9{-# LANGUAGE OverloadedStrings #-}
12{-# LANGUAGE PolyKinds #-}
10{-# LANGUAGE PolyKinds #-}
@@ -36,10 +34,9 @@ module Servant.Server.Internal
36import Control.Monad
34import Control.Monad
37 (join, when)
35 (join, when)
38import Control.Monad.Trans
36import Control.Monad.Trans
39− (liftIO, lift)
37+ (liftIO)
40import Control.Monad.Trans.Resource
38import Control.Monad.Trans.Resource
41− (runResourceT, ReleaseKey)
39+ (runResourceT)
43import qualified Data.ByteString as B
40import qualified Data.ByteString as B
44import qualified Data.ByteString.Builder as BB
41import qualified Data.ByteString.Builder as BB
45import qualified Data.ByteString.Char8 as BC8
42import qualified Data.ByteString.Char8 as BC8
@@ -66,7 +63,7 @@ import Network.HTTP.Types hiding
66import Network.Socket
63import Network.Socket
67 (SockAddr)
64 (SockAddr)
68import Network.Wai
65import Network.Wai
69− (Application, Request, Response, ResponseReceived, httpVersion, isSecure, lazyRequestBody,
66+ (Application, Request, httpVersion, isSecure, lazyRequestBody,
70 queryString, remoteHost, getRequestBodyChunk, requestHeaders,
67 queryString, remoteHost, getRequestBodyChunk, requestHeaders,
71 requestMethod, responseLBS, responseStream, vault)
68 requestMethod, responseLBS, responseStream, vault)
72import Prelude ()
69import Prelude ()
@@ -76,10 +73,10 @@ import Servant.API
76 CaptureAll, Description, EmptyAPI, Fragment,
73 CaptureAll, Description, EmptyAPI, Fragment,
77 FramingRender (..), FramingUnrender (..), FromSourceIO (..),
74 FramingRender (..), FramingUnrender (..), FromSourceIO (..),
78 Header', If, IsSecure (..), NoContentVerb, QueryFlag,
75 Header', If, IsSecure (..), NoContentVerb, QueryFlag,
79− QueryParam', QueryParams, Raw, RawM, ReflectMethod (reflectMethod),
76+ QueryParam', QueryParams, Raw, ReflectMethod (reflectMethod),
80 RemoteHost, ReqBody', SBool (..), SBoolI (..), SourceIO,
77 RemoteHost, ReqBody', SBool (..), SBoolI (..), SourceIO,
81 Stream, StreamBody', Summary, ToSourceIO (..), Vault, Verb,
78 Stream, StreamBody', Summary, ToSourceIO (..), Vault, Verb,
82− WithNamedContext, WithResource, NamedRoutes)
79+ WithNamedContext, NamedRoutes)
83import Servant.API.Generic (GenericMode(..), ToServant, ToServantApi, GServantProduct, toServant, fromServant)
80import Servant.API.Generic (GenericMode(..), ToServant, ToServantApi, GServantProduct, toServant, fromServant)
84import Servant.API.ContentTypes
81import Servant.API.ContentTypes
85 (AcceptHeader (..), AllCTRender (..), AllCTUnrender (..),
82 (AcceptHeader (..), AllCTRender (..), AllCTUnrender (..),
@@ -97,8 +94,6 @@ import Servant.API.TypeErrors
97import Web.HttpApiData
94import Web.HttpApiData
98 (FromHttpApiData, parseHeader, parseQueryParam, parseUrlPiece,
95 (FromHttpApiData, parseHeader, parseQueryParam, parseUrlPiece,
99 parseUrlPieces)
96 parseUrlPieces)
103import Servant.Server.Internal.BasicAuth
98import Servant.Server.Internal.BasicAuth
104import Servant.Server.Internal.Context
99import Servant.Server.Internal.Context
@@ -117,10 +112,6 @@ import Servant.API.TypeLevel
117 (AtLeastOneFragment, FragmentUnique)
112 (AtLeastOneFragment, FragmentUnique)
119class HasServer api context where
114class HasServer api context where
120− -- | The type of a server for this API, given a monad to run effects in.
122− -- Note that the result kind is @*@, so it is /not/ a monad transformer, unlike
123− -- what the @T@ in the name might suggest.
124 type ServerT api (m :: * -> *) :: *
115 type ServerT api (m :: * -> *) :: *
@@ -182,7 +173,7 @@ instance (HasServer a context, HasServer b context) => HasServer (a :<|> b) cont
182-- > server = getBook
173-- > server = getBook
183-- > where getBook :: Text -> Handler Book
174-- > where getBook :: Text -> Handler Book
184-- > getBook isbn = ...
175-- > getBook isbn = ...
185−instance (KnownSymbol capture, FromHttpApiData a, Typeable a
176+instance (KnownSymbol capture, FromHttpApiData a
186 , HasServer api context, SBoolI (FoldLenient mods)
177 , HasServer api context, SBoolI (FoldLenient mods)
187 , HasContextEntry (MkContextWithErrorFormatter context) ErrorFormatters
178 , HasContextEntry (MkContextWithErrorFormatter context) ErrorFormatters
@@ -194,7 +185,7 @@ instance (KnownSymbol capture, FromHttpApiData a, Typeable a
194 hoistServerWithContext _ pc nt s = hoistServerWithContext (Proxy :: Proxy api) pc nt . s
185 hoistServerWithContext _ pc nt s = hoistServerWithContext (Proxy :: Proxy api) pc nt . s
196 route Proxy context d =
187 route Proxy context d =
197− CaptureRouter [hint] $
188+ CaptureRouter $
198 route (Proxy :: Proxy api)
189 route (Proxy :: Proxy api)
200 (addCapture d $ \ txt -> withRequest $ \ request ->
191 (addCapture d $ \ txt -> withRequest $ \ request ->
@@ -206,7 +197,6 @@ instance (KnownSymbol capture, FromHttpApiData a, Typeable a
207 rep = typeRep (Proxy :: Proxy Capture')
198 rep = typeRep (Proxy :: Proxy Capture')
208 formatError = urlParseErrorFormatter $ getContextEntry (mkContextWithErrorFormatter context)
199 formatError = urlParseErrorFormatter $ getContextEntry (mkContextWithErrorFormatter context)
209− hint = CaptureHint (T.pack $ symbolVal $ Proxy @capture) (typeRep (Proxy :: Proxy a))
211-- | If you use 'CaptureAll' in one of the endpoints for your API,
201-- | If you use 'CaptureAll' in one of the endpoints for your API,
212-- this automatically requires your server-side handler to be a
202-- this automatically requires your server-side handler to be a
@@ -225,7 +215,7 @@ instance (KnownSymbol capture, FromHttpApiData a, Typeable a
225-- > server = getSourceFile
215-- > server = getSourceFile
226-- > where getSourceFile :: [Text] -> Handler Book
216-- > where getSourceFile :: [Text] -> Handler Book
227-- > getSourceFile pathSegments = ...
217-- > getSourceFile pathSegments = ...
228−instance (KnownSymbol capture, FromHttpApiData a, Typeable a
218+instance (KnownSymbol capture, FromHttpApiData a
229 , HasServer api context
219 , HasServer api context
230 , HasContextEntry (MkContextWithErrorFormatter context) ErrorFormatters
220 , HasContextEntry (MkContextWithErrorFormatter context) ErrorFormatters
@@ -237,7 +227,7 @@ instance (KnownSymbol capture, FromHttpApiData a, Typeable a
237 hoistServerWithContext _ pc nt s = hoistServerWithContext (Proxy :: Proxy api) pc nt . s
227 hoistServerWithContext _ pc nt s = hoistServerWithContext (Proxy :: Proxy api) pc nt . s
239 route Proxy context d =
229 route Proxy context d =
240− CaptureAllRouter [hint] $
230+ CaptureAllRouter $
241 route (Proxy :: Proxy api)
231 route (Proxy :: Proxy api)
243 (addCapture d $ \ txts -> withRequest $ \ request ->
233 (addCapture d $ \ txts -> withRequest $ \ request ->
@@ -248,43 +238,6 @@ instance (KnownSymbol capture, FromHttpApiData a, Typeable a
249 rep = typeRep (Proxy :: Proxy CaptureAll)
239 rep = typeRep (Proxy :: Proxy CaptureAll)
250 formatError = urlParseErrorFormatter $ getContextEntry (mkContextWithErrorFormatter context)
240 formatError = urlParseErrorFormatter $ getContextEntry (mkContextWithErrorFormatter context)
251− hint = CaptureHint (T.pack $ symbolVal $ Proxy @capture) (typeRep (Proxy :: Proxy [a]))
253−-- | If you use 'WithResource' in one of the endpoints for your API Servant
254−-- will provide the handler for this endpoint an argument of the specified type.
255−-- The lifespan of this resource will be automatically managed by Servant. This
256−-- resource will be created before the handler starts and it will be destoyed
257−-- after it ends. A new resource is created for each request to the endpoint.
259−-- The creation and destruction are done using a 'Data.Acquire.Acquire'
260−-- provided via server 'Context'.
264−-- > type MyApi = WithResource Handle :> "writeToFile" :> Post '[JSON] NoContent
266−-- > server :: Server MyApi
267−-- > server = writeToFile
268−-- > where writeToFile :: (ReleaseKey, Handle) -> Handler NoContent
269−-- > writeToFile (_, h) = hPutStrLn h "message"
271−-- In addition to the resource, the handler will also receive a 'ReleaseKey'
272−-- which can be used to deallocate the resource before the end of the request
275−instance (HasServer api ctx, HasContextEntry ctx (Acquire a))
276− => HasServer (WithResource a :> api) ctx where
278− type ServerT (WithResource a :> api) m = (ReleaseKey, a) -> ServerT api m
280− hoistServerWithContext _ pc nt s = hoistServerWithContext (Proxy @api) pc nt . s
282− route Proxy context d = route (Proxy @api) context (d `addParameterCheck` allocateResource)
284− allocateResource :: DelayedIO (ReleaseKey, a)
285− allocateResource = DelayedIO $ lift $ allocateAcquire (getContextEntry context)
289allowedMethodHead :: Method -> Request -> Bool
242allowedMethodHead :: Method -> Request -> Bool
290allowedMethodHead method request = method == methodGet && requestMethod request == methodHead
243allowedMethodHead method request = method == methodGet && requestMethod request == methodHead
@@ -653,35 +606,6 @@ instance HasServer Raw context where
653 Fail a -> respond $ Fail a
606 Fail a -> respond $ Fail a
654 FailFatal e -> respond $ FailFatal e
607 FailFatal e -> respond $ FailFatal e
656−-- | Just pass the request to the underlying application and serve its response.
660−-- > type MyApi = "images" :> Raw
662−-- > server :: Server MyApi
663−-- > server = serveDirectory "/var/www/images"
664−instance HasServer RawM context where
665− type ServerT RawM m = Request -> (Response -> IO ResponseReceived) -> m ResponseReceived
670− -> Delayed env (Request -> (Response -> IO ResponseReceived) -> Handler ResponseReceived) -> Router env
671− route _ _ handleDelayed = RawRouter $ \env request respond -> runResourceT $ do
672− routeResult <- runDelayed handleDelayed env request
673− let respond' = liftIO . respond
674− liftIO $ case routeResult of
675− Route handler -> runHandler (handler request (respond . Route)) >>=
677− Left e -> respond' $ FailFatal e
679− Fail e -> respond' $ Fail e
680− FailFatal e -> respond' $ FailFatal e
682− hoistServerWithContext _ _ f srvM = \req respond -> f (srvM req respond)
685-- | If you use 'ReqBody' in one of the endpoints for your API,
609-- | If you use 'ReqBody' in one of the endpoints for your API,
686-- this automatically requires your server-side handler to be a function
610-- this automatically requires your server-side handler to be a function
687-- that takes an argument of the type specified by 'ReqBody'.
611-- that takes an argument of the type specified by 'ReqBody'.
@@ -895,11 +819,7 @@ instance (HasContextEntry context (NamedContext name subContext), HasServer subA
895-------------------------------------------------------------------------------
819-------------------------------------------------------------------------------
897-- Erroring instance for 'HasServer' when a combinator is not fully applied
821-- Erroring instance for 'HasServer' when a combinator is not fully applied
898−instance TypeError (PartialApplication
899−#if __GLASGOW_HASKELL__ >= 904
900− @(Type -> [Type] -> Constraint)
902− HasServer arr) => HasServer ((arr :: a -> b) :> sub) context
822+instance TypeError (PartialApplication HasServer arr) => HasServer ((arr :: a -> b) :> sub) context
904 type ServerT (arr :> sub) _ = TypeError (PartialApplication (HasServer :: * -> [*] -> Constraint) arr)
824 type ServerT (arr :> sub) _ = TypeError (PartialApplication (HasServer :: * -> [*] -> Constraint) arr)
905 route = error "unreachable"
825 route = error "unreachable"
@@ -943,11 +863,7 @@ type HasServerArrowTypeError a b =
943-- XXX: This omits the @context@ parameter, e.g.:
863-- XXX: This omits the @context@ parameter, e.g.:
945-- "There is no instance for HasServer (Bool :> …)". Do we care ?
865-- "There is no instance for HasServer (Bool :> …)". Do we care ?
946−instance {-# OVERLAPPABLE #-} TypeError (NoInstanceForSub
866+instance {-# OVERLAPPABLE #-} TypeError (NoInstanceForSub HasServer ty) => HasServer (ty :> sub) context
947−#if __GLASGOW_HASKELL__ >= 904
948− @(Type -> [Type] -> Constraint)
950− HasServer ty) => HasServer (ty :> sub) context
952instance {-# OVERLAPPABLE #-} TypeError (NoInstanceFor (HasServer api context)) => HasServer api context
868instance {-# OVERLAPPABLE #-} TypeError (NoInstanceFor (HasServer api context)) => HasServer api context