52f76ea..master · servant

.github/workflows/master.yml+34−34

@@ -76,40 +76,40 @@ jobs:

7676 (cd servant-conduit && eval $DOCTEST)

7777 (cd servant-pipes && eval $DOCTEST)

7878

79− stack:

80− name: stack / ghc ${{ matrix.ghc }}

81− runs-on: ubuntu-latest

82− strategy:

83− matrix:

84− stack: ["2.7.5"]

85− ghc: ["8.10.7"]

86−

87− steps:

88− - uses: actions/checkout@v2

89−

90− - uses: haskell/actions/setup@v1

91− name: Setup Haskell Stack

92− with:

93− ghc-version: ${{ matrix.ghc }}

94− stack-version: ${{ matrix.stack }}

95−

96− - uses: actions/cache@v2.1.3

97− name: Cache ~/.stack

98− with:

99− path: ~/.stack

100− key: ${{ runner.os }}-${{ matrix.ghc }}-stack

101−

102− - name: Install dependencies

103− run: |

104− stack build --system-ghc --test --bench --no-run-tests --no-run-benchmarks --only-dependencies

105−

106− - name: Build

107− run: |

108− stack build --system-ghc --test --bench --no-run-tests --no-run-benchmarks

109−

110− - name: Test

111− run: |

112− stack test --system-ghc

79+ # stack:

80+ # name: stack / ghc ${{ matrix.ghc }}

81+ # runs-on: ubuntu-latest

82+ # strategy:

83+ # matrix:

84+ # stack: ["2.7.5"]

85+ # ghc: ["8.10.7"]

86+

87+ # steps:

88+ # - uses: actions/checkout@v2

89+

90+ # - uses: haskell/actions/setup@v1

91+ # name: Setup Haskell Stack

92+ # with:

93+ # ghc-version: ${{ matrix.ghc }}

94+ # stack-version: ${{ matrix.stack }}

95+

96+ # - uses: actions/cache@v2.1.3

97+ # name: Cache ~/.stack

98+ # with:

99+ # path: ~/.stack

100+ # key: ${{ runner.os }}-${{ matrix.ghc }}-stack

101+

102+ # - name: Install dependencies

103+ # run: |

104+ # stack build --system-ghc --test --bench --no-run-tests --no-run-benchmarks --only-dependencies

105+

106+ # - name: Build

107+ # run: |

108+ # stack build --system-ghc --test --bench --no-run-tests --no-run-benchmarks

109+

110+ # - name: Test

111+ # run: |

112+ # stack test --system-ghc

113113

114114 ghcjs:

115115 name: ubuntu-latest / ghcjs 8.6

cabal.project+1

@@ -47,6 +47,7 @@ packages:

4747 doc/cookbook/using-custom-monad

4848 doc/cookbook/using-free-client

4949 -- doc/cookbook/open-id-connect

50+ doc/cookbook/managed-resource

5051

5152tests: True

5253optimization: False

changelog.d/1571new file+10

@@ -0,0 +1,10 @@

1+synopsis: Support UVerb in servant-auth-server

2+prs: #1571

3+issues: #1570

4+description: {

5+UVerb endpoints are now supported by servant-auth-server and can be used under the

6+Auth combinator when writing servers. It is still unsupported by

7+servant-auth-client.

8+

9+This PR also brings Headers support in UVerb responses

10+}

changelog.d/1573new file+2

@@ -0,0 +1,2 @@

1+synopsis: Add API docs for ServerT

2+prs: #1573

changelog.d/1606new file+10

@@ -0,0 +1,10 @@

1+synopsis: Handle Cookies correctly for RunStreamingClient

2+prs: #1606

3+issues: #1605

4+

5+description: {

6+

7+Makes performWithStreamingRequest take into consideration the

8+CookieJar, which it previously didn't.

9+

10+}

changelog.d/1638new file+2

@@ -0,0 +1,2 @@

1+synopsis: Add Functor instance to AuthHandler.

2+prs: #1638

changelog.d/1649new file+8

@@ -0,0 +1,8 @@

1+synopsis: Add HasStatus instance for Headers (that defers StatusOf to underlying value)

2+prs: #1649

3+

4+description: {

5+

6+Adds a new HasStatus (Headers hs a) instance (StatusOf (Headers hs a) = StatusOf a)

7+

8+}

doc/cookbook/index.rst+1

@@ -37,3 +37,4 @@ you name it!

3737 sentry/Sentry.lhs

3838 testing/Testing.lhs

3939 open-id-connect/OpenIdConnect.lhs

40+ managed-resource/ManagedResource.lhs

doc/cookbook/managed-resource/ManagedResource.lhsnew file+114

@@ -0,0 +1,114 @@

1+# Request-lifetime Managed Resources

2+

3+Let's see how we can write a handle that uses a resource managed by Servant. The resource is created automatically by Servant when the server recieves a request, and the resource is automatically destroyed when the server is finished handling a request.

4+

5+As usual, we start with a little bit of throat clearing.

6+

7+

8+``` haskell

9+{-# LANGUAGE DataKinds #-}

10+{-# LANGUAGE TypeOperators #-}

11+import Control.Concurrent

12+import Control.Exception (bracket, throwIO)

13+import Control.Monad.IO.Class

14+import Control.Monad.Trans.Resource

15+import Data.Acquire

16+import Network.HTTP.Client (newManager, defaultManagerSettings)

17+import Network.Wai.Handler.Warp

18+import Servant

19+import Servant.Client

20+import System.IO

21+```

22+

23+Here we define an API type that uses the `WithResource` combinator. The server handler for an endpoint with a `WithResource res` component will receive a value of that type as an argument.

24+

25+``` haskell

26+type API = WithResource Handle :> ReqBody '[PlainText] String :> Post '[JSON] NoContent

27+

28+api :: Proxy API

29+api = Proxy

30+```

31+

32+But this resource value has to come from somewhere. Servant obtains the value using an Acquire provided in the context. The Acquire knows how to both create and destroy resources of a particular type.

33+

34+``` haskell

35+appContext :: Context '[Acquire Handle]

36+appContext = acquireHandle :. EmptyContext

37+

38+acquireHandle :: Acquire Handle

39+acquireHandle = mkAcquire newHandle closeHandle

40+

41+newHandle :: IO Handle

42+newHandle = do

43+ putStrLn "opening file"

44+ h <- openFile "test.txt" AppendMode

45+ putStrLn "opened file"

46+ return h

47+

48+closeHandle :: Handle -> IO ()

49+closeHandle h = do

50+ putStrLn "closing file"

51+ hClose h

52+ putStrLn "closed file"

53+```

54+

55+Now we create the handler which will use this resource. This handler will write the request message to the System.IO.Handle which was provided to us. In some situations the handler will succeed, but in some in will fail. In either case, Servant will clean up the resource for us.

56+

57+``` haskell

58+server :: Server API

59+server = writeToFile

60+

61+ where writeToFile :: (ReleaseKey, Handle) -> String -> Handler NoContent

62+ writeToFile (_, h) msg = case msg of

63+ "illegal" -> error "wait, that's illegal!"

64+ legalMsg -> liftIO $ do

65+ putStrLn "writing file"

66+ hPutStrLn h legalMsg

67+ putStrLn "wrote file"

68+ return NoContent

69+```

70+

71+Finally we run the server in the background while we post messages to it.

72+

73+``` haskell

74+runApp :: IO ()

75+runApp = run 8080 (serveWithContext api appContext $ server)

76+

77+postMsg :: String -> ClientM NoContent

78+postMsg = client api

79+

80+main :: IO ()

81+main = do

82+ mgr <- newManager defaultManagerSettings

83+ bracket (forkIO $ runApp) killThread $ \_ -> do

84+ ms <- flip runClientM (mkClientEnv mgr (BaseUrl Http "localhost" 8080 "")) $ do

85+ liftIO $ putStrLn "sending hello message"

86+ _ <- postMsg "hello"

87+ liftIO $ putStrLn "sending illegal message"

88+ _ <- postMsg "illegal"

89+ liftIO $ putStrLn "done"

90+ print ms

91+```

92+

93+This program prints

94+

95+```

96+sending hello message

97+opening file

98+opened file

99+writing file

100+wrote file

101+closing file

102+closed file

103+sending illegal message

104+opening file

105+opened file

106+closing file

107+closed file

108+wait, that's illegal!

109+CallStack (from HasCallStack):

110+ error, called at ManagedResource.lhs:63:24 in main:Main

111+Left (FailureResponse (Request {requestPath = (BaseUrl {baseUrlScheme = Http, baseUrlHost = "localhost", baseUrlPort = 8080, baseUrlPath = ""},""), requestQueryString = fromList [], requestBody = Just ((),text/plain;charset=utf-8), requestAccept = fromList [], requestHeaders = fromList [], requestHttpVersion = HTTP/1.1, requestMethod = "POST"}) (Response {responseStatusCode = Status {statusCode = 500, statusMessage = "Internal Server Error"}, responseHeaders = fromList [("Transfer-Encoding","chunked"),("Date","Thu, 24 Nov 2022 21:04:47 GMT"),("Server","Warp/3.3.23"),("Content-Type","text/plain; charset=utf-8")], responseHttpVersion = HTTP/1.1, responseBody = "Something went wrong"}))

112+```

113+

114+and appends to a file called `test.txt`. We can see from the output that when a legal message is sent, the file is opened, written to, and closed. We can also see that when an illegal message is sent, the file is opened but not written to. Crucially, it is still closed even though the handler threw an exception.

doc/cookbook/managed-resource/managed-resource.cabalnew file+30

@@ -0,0 +1,30 @@

1+cabal-version: 2.2

2+name: cookbook-managed-resource

3+version: 0.1

4+synopsis: Simple managed resource cookbook example

5+homepage: http://docs.servant.dev/

6+license: BSD-3-Clause

7+license-file: ../../../servant/LICENSE

8+author: Servant Contributors

9+maintainer: haskell-servant-maintainers@googlegroups.com

10+build-type: Simple

11+tested-with: GHC==9.4.2

12+

13+executable cookbook-managed-resource

14+ main-is: ManagedResource.lhs

15+ build-depends: base == 4.*

16+ , text >= 1.2

17+ , aeson >= 1.2

18+ , servant

19+ , servant-client

20+ , servant-server

21+ , warp >= 3.2

22+ , wai >= 3.2

23+ , http-types >= 0.12

24+ , markdown-unlit >= 0.4

25+ , http-client >= 0.5

26+ , transformers

27+ , resourcet

28+ default-language: Haskell2010

29+ ghc-options: -Wall -pgmL markdown-unlit

30+ build-tool-depends: markdown-unlit:markdown-unlit

doc/cookbook/open-id-connect/OpenIdConnect.lhs+1−1

@@ -330,7 +330,7 @@ data Customer = Customer {

330330```

331331

332332Here is the code that displays the homepage.

333−It should contain a link to the the `/login` URL.

333+It should contain a link to the `/login` URL.

334334When the user clicks on this link it will be redirected to Google login page

335335with some generated information.

336336

doc/cookbook/uverb/UVerb.lhs+1−1

@@ -199,7 +199,7 @@ parsers in the hope that the ones that should will always error out so

199199you can try until the right one returns a value.)

200200

201201[servant-exceptions](https://github.com/ch1bo/servant-exceptions) is

202−another shot at at the problem. It is inspired by

202+another shot at the problem. It is inspired by

203203servant-checked-exceptions, so it may be worth taking a closer look.

204204The README claims that

205205[cardano-sl](https://github.com/input-output-hk/cardano-sl) also has

doc/requirements.txt+1

@@ -1,3 +1,4 @@

11recommonmark==0.5.0

22Sphinx==1.8.4

33sphinx_rtd_theme>=0.4.2

4+jinja2<3.1.0

servant-auth/servant-auth-client/servant-auth-client.cabal+2−2

@@ -31,7 +31,7 @@ library

3131 default-extensions: ConstraintKinds DataKinds DefaultSignatures DeriveFoldable DeriveFunctor DeriveGeneric DeriveTraversable FlexibleContexts FlexibleInstances FunctionalDependencies GADTs KindSignatures MultiParamTypeClasses OverloadedStrings RankNTypes ScopedTypeVariables TypeFamilies TypeOperators

3232 ghc-options: -Wall

3333 build-depends:

34− base >= 4.10 && < 4.17

34+ base >= 4.10 && < 4.18

3535 , bytestring >= 0.10.6.0 && < 0.12

3636 , containers >= 0.5.6.2 && < 0.7

3737 , servant-auth == 0.4.*

@@ -74,7 +74,7 @@ test-suite spec

7474 , transformers >= 0.4.2.0 && < 0.6

7575 , wai >= 3.2.1.2 && < 3.3

7676 , warp >= 3.2.25 && < 3.4

77− , jose >= 0.7.0.0 && < 0.10

77+ , jose >= 0.10 && < 0.11

7878 other-modules:

7979 Servant.Auth.ClientSpec

8080 default-language: Haskell2010

servant-auth/servant-auth-docs/servant-auth-docs.cabal+2−2

@@ -35,7 +35,7 @@ library

3535 default-extensions: ConstraintKinds DataKinds DefaultSignatures DeriveFoldable DeriveFunctor DeriveGeneric DeriveTraversable FlexibleContexts FlexibleInstances FunctionalDependencies GADTs KindSignatures MultiParamTypeClasses OverloadedStrings RankNTypes ScopedTypeVariables TypeFamilies TypeOperators

3636 ghc-options: -Wall

3737 build-depends:

38− base >= 4.10 && < 4.17

38+ base >= 4.10 && < 4.18

3939 , servant-docs >= 0.11.2 && < 0.13

4040 , servant >= 0.13 && < 0.20

4141 , servant-auth == 0.4.*

@@ -50,7 +50,7 @@ test-suite doctests

5050 build-depends:

5151 base,

5252 servant-auth-docs,

53− doctest >= 0.16 && < 0.19,

53+ doctest >= 0.16 && < 0.21,

5454 QuickCheck >= 2.11.3 && < 2.15,

5555 template-haskell

5656 ghc-options: -Wall -threaded

servant-auth/servant-auth-server/servant-auth-server.cabal+6−5

@@ -31,7 +31,7 @@ library

3131 default-extensions: ConstraintKinds DataKinds DefaultSignatures DeriveFoldable DeriveFunctor DeriveGeneric DeriveTraversable FlexibleContexts FlexibleInstances FunctionalDependencies GADTs KindSignatures MultiParamTypeClasses OverloadedStrings RankNTypes ScopedTypeVariables TypeFamilies TypeOperators

3232 ghc-options: -Wall

3333 build-depends:

34− base >= 4.10 && < 4.17

34+ base >= 4.10 && < 4.18

3535 , aeson >= 1.0.0.1 && < 3

3636 , base64-bytestring >= 1.0.0.1 && < 2

3737 , blaze-builder >= 0.4.1.0 && < 0.5

@@ -41,17 +41,17 @@ library

4141 , data-default-class >= 0.1.2.0 && < 0.2

4242 , entropy >= 0.4.1.3 && < 0.5

4343 , http-types >= 0.12.2 && < 0.13

44− , jose >= 0.7.0.0 && < 0.10

44+ , jose >= 0.10 && < 0.11

4545 , lens >= 4.16.1 && < 5.3

46− , memory >= 0.14.16 && < 0.18

46+ , memory >= 0.14.16 && < 0.19

4747 , monad-time >= 0.3.1.0 && < 0.4

48− , mtl >= 2.2.2 && < 2.3

48+ , mtl ^>= 2.2.2 || ^>= 2.3.1

4949 , servant >= 0.13 && < 0.20

5050 , servant-auth == 0.4.*

5151 , servant-server >= 0.13 && < 0.20

5252 , tagged >= 0.8.4 && < 0.9

5353 , text >= 1.2.3.0 && < 2.1

54− , time >= 1.5.0.1 && < 1.12

54+ , time >= 1.5.0.1 && < 1.13

5555 , unordered-containers >= 0.2.9.0 && < 0.3

5656 , wai >= 3.2.1.2 && < 3.3

5757

@@ -129,6 +129,7 @@ test-suite spec

129129 , lens-aeson >= 1.0.2 && < 1.3

130130 , warp >= 3.2.25 && < 3.4

131131 , wreq >= 0.5.2.1 && < 0.6

132+ , text >= 1.2.3.0 && < 2.1

132133 other-modules:

133134 Servant.Auth.ServerSpec

134135 default-language: Haskell2010

servant-auth/servant-auth-server/src/Servant/Auth/Server/Internal.hs+6−9

@@ -54,15 +54,12 @@ instance ( n ~ 'S ('S 'Z)

5454

5555 makeCookies :: AuthResult v -> IO (SetCookieList ('S ('S 'Z)))

5656 makeCookies authResult = do

57− xsrf <- makeXsrfCookie cookieSettings

58− fmap (Just xsrf `SetCookieCons`) $

59− case authResult of

60− (Authenticated v) -> do

61− ejwt <- makeSessionCookie cookieSettings jwtSettings v

62− case ejwt of

63− Nothing -> return $ Nothing `SetCookieCons` SetCookieNil

64− Just jwt -> return $ Just jwt `SetCookieCons` SetCookieNil

65− _ -> return $ Nothing `SetCookieCons` SetCookieNil

57+ case authResult of

58+ (Authenticated v) -> do

59+ ejwt <- makeSessionCookie cookieSettings jwtSettings v

60+ xsrf <- makeXsrfCookie cookieSettings

61+ return $ Just xsrf `SetCookieCons` (ejwt `SetCookieCons` SetCookieNil)

62+ _ -> return $ Nothing `SetCookieCons` (Nothing `SetCookieCons` SetCookieNil)

6663

6764 go :: (AuthResult v -> ServerT api Handler)

6865 -> (AuthResult v, SetCookieList n)

servant-auth/servant-auth-server/src/Servant/Auth/Server/Internal/AddSetCookie.hs+14−1

@@ -11,6 +11,7 @@ import Data.Tagged (Tagged (..))

1111import qualified Network.HTTP.Types as HTTP

1212import Network.Wai (mapResponseHeaders)

1313import Servant

14+import Servant.API.UVerb.Union

1415import Servant.API.Generic

1516import Servant.Server.Generic

1617import Web.Cookie

@@ -33,12 +34,24 @@ type family AddSetCookieApiVerb a where

3334 AddSetCookieApiVerb (Headers ls a) = Headers (Header "Set-Cookie" SetCookie ': ls) a

3435 AddSetCookieApiVerb a = Headers '[Header "Set-Cookie" SetCookie] a

3536

37+#if MIN_VERSION_servant_server(0,18,1)

38+type family MapAddSetCookieApiVerb (as :: [*]) where

39+ MapAddSetCookieApiVerb '[] = '[]

40+ MapAddSetCookieApiVerb (a ': as) = (AddSetCookieApiVerb a ': MapAddSetCookieApiVerb as)

41+#endif

42+

3643type family AddSetCookieApi a :: *

3744type instance AddSetCookieApi (a :> b) = a :> AddSetCookieApi b

3845type instance AddSetCookieApi (a :<|> b) = AddSetCookieApi a :<|> AddSetCookieApi b

46+#if MIN_VERSION_servant_server(0,19,0)

3947type instance AddSetCookieApi (NamedRoutes api) = AddSetCookieApi (ToServantApi api)

48+#endif

4049type instance AddSetCookieApi (Verb method stat ctyps a)

4150 = Verb method stat ctyps (AddSetCookieApiVerb a)

51+#if MIN_VERSION_servant_server(0,18,1)

52+type instance AddSetCookieApi (UVerb method ctyps as)

53+ = UVerb method ctyps (MapAddSetCookieApiVerb as)

54+#endif

4255type instance AddSetCookieApi Raw = Raw

4356#if MIN_VERSION_servant_server(0,15,0)

4457type instance AddSetCookieApi (Stream method stat framing ctyps a)

@@ -57,7 +70,7 @@ instance {-# OVERLAPS #-} AddSetCookies ('S n) oldb newb

5770 => AddSetCookies ('S n) (a -> oldb) (a -> newb) where

5871 addSetCookies cookies oldfn = addSetCookies cookies . oldfn

5972

60−instance AddSetCookies 'Z orig orig where

73+instance (orig1 ~ orig2) => AddSetCookies 'Z orig1 orig2 where

6174 addSetCookies _ = id

6275

6376instance {-# OVERLAPPABLE #-}

servant-auth/servant-auth-server/src/Servant/Auth/Server/Internal/Cookie.hs+1

@@ -2,6 +2,7 @@

22module Servant.Auth.Server.Internal.Cookie where

33

44import Blaze.ByteString.Builder (toByteString)

5+import Control.Monad (MonadPlus(..), guard)

56import Control.Monad.Except

67import Control.Monad.Reader

78import qualified Crypto.JOSE as Jose

servant-auth/servant-auth-server/src/Servant/Auth/Server/Internal/JWT.hs+3−7

@@ -1,18 +1,14 @@

11module Servant.Auth.Server.Internal.JWT where

22

33import Control.Lens

4−import Control.Monad.Except

4+import Control.Monad (MonadPlus(..), guard)

55import Control.Monad.Reader

66import qualified Crypto.JOSE as Jose

77import qualified Crypto.JWT as Jose

8−import Data.Aeson (FromJSON, Result (..), ToJSON, fromJSON,

9− toJSON)

108import Data.ByteArray (constEq)

119import qualified Data.ByteString as BS

1210import qualified Data.ByteString.Lazy as BSL

13−import qualified Data.HashMap.Strict as HM

1411import Data.Maybe (fromMaybe)

15−import qualified Data.Text as T

1612import Data.Time (UTCTime)

1713import Network.Wai (requestHeaders)

1814

@@ -42,7 +38,7 @@ jwtAuthCheck jwtSettings = do

4238-- token expires.

4339makeJWT :: ToJWT a

4440 => a -> JWTSettings -> Maybe UTCTime -> IO (Either Jose.Error BSL.ByteString)

45−makeJWT v cfg expiry = runExceptT $ do

41+makeJWT v cfg expiry = Jose.runJOSE $ do

4642 bestAlg <- Jose.bestJWSAlg $ signingKey cfg

4743 let alg = fromMaybe bestAlg $ jwtAlg cfg

4844 ejwt <- Jose.signClaims (signingKey cfg)

@@ -59,7 +55,7 @@ makeJWT v cfg expiry = runExceptT $ do

5955verifyJWT :: FromJWT a => JWTSettings -> BS.ByteString -> IO (Maybe a)

6056verifyJWT jwtCfg input = do

6157 keys <- validationKeys jwtCfg

62− verifiedJWT <- runExceptT $ do

58+ verifiedJWT <- Jose.runJOSE $ do

6359 unverifiedJWT <- Jose.decodeCompact (BSL.fromStrict input)

6460 Jose.verifyClaims

6561 (jwtSettingsToJwtValidationSettings jwtCfg)

servant-auth/servant-auth-server/src/Servant/Auth/Server/Internal/Types.hs+1

@@ -2,6 +2,7 @@

22module Servant.Auth.Server.Internal.Types where

33

44import Control.Applicative

5+import Control.Monad (MonadPlus(..), ap)

56import Control.Monad.Reader

67import Control.Monad.Time

78import Data.Monoid (Monoid (..))

servant-auth/servant-auth-server/test/Servant/Auth/ServerSpec.hs+33−6

@@ -1,4 +1,5 @@

11{-# LANGUAGE CPP #-}

2+{-# LANGUAGE TypeApplications #-}

23module Servant.Auth.ServerSpec (spec) where

34

45#if !MIN_VERSION_servant_server(0,16,0)

@@ -6,13 +7,12 @@ module Servant.Auth.ServerSpec (spec) where

67#endif

78

89import Control.Lens

9−import Control.Monad.Except (runExceptT)

1010import Control.Monad.IO.Class (liftIO)

1111import Crypto.JOSE (Alg (HS256, None), Error,

1212 JWK, JWSHeader,

1313 KeyMaterialGenParam (OctGenParam),

1414 ToCompact, encodeCompact,

15− genJWK, newJWSHeader)

15+ genJWK, newJWSHeader, runJOSE)

1616import Crypto.JWT (Audience (..), ClaimsSet,

1717 NumericDate (NumericDate),

1818 SignedJWT,

@@ -25,6 +25,7 @@ import Data.Aeson (FromJSON, ToJSON, Value,

2525import Data.Aeson.Lens (_JSON)

2626import qualified Data.ByteString as BS

2727import qualified Data.ByteString.Lazy as BSL

28+import Data.Text (Text, pack)

2829import Data.CaseInsensitive (mk)

2930import Data.Foldable (find)

3031import Data.Monoid

@@ -40,6 +41,7 @@ import Network.HTTP.Types (Status, status200,

4041import Network.Wai (responseLBS)

4142import Network.Wai.Handler.Warp (testWithApplication)

4243import Network.Wreq (Options, auth, basicAuth,

44+ checkResponse,

4345 cookieExpiryTime, cookies,

4446 defaults, get, getWith, postWith,

4547 header, oauth2Bearer,

@@ -183,8 +185,21 @@ cookieAuthSpec

183185 it "fails with no XSRF header or cookie" $ \port -> property

184186 $ \(user :: User) -> do

185187 jwt <- createJWT theKey (newJWSHeader ((), HS256)) (claims $ toJSON user)

186− opts <- addJwtToCookie cookieCfg jwt

187− getWith opts (url port) `shouldHTTPErrorWith` status401

188+ opts' <- addJwtToCookie cookieCfg jwt

189+ let opts = opts' & checkResponse .~ Just mempty

190+ resp <- getWith opts (url port)

191+ resp ^. responseStatus `shouldBe` status401

192+ (resp ^. responseCookieJar) `shouldNotHaveCookies` ["XSRF-TOKEN"]

193+

194+ -- Validating that the XSRF cookie isn't added for UVerb routes either.

195+ -- These routes can return a 401 response directly without using throwError / throwAll,

196+ -- which revealed a bug:

197+ --

198+ -- https://github.com/haskell-servant/servant/issues/1570#issuecomment-1076374449

199+ resp <- getWith opts (url port ++ "/uverb")

200+ resp ^. responseStatus `shouldBe` status401

201+ (resp ^. responseCookieJar) `shouldNotHaveCookies` ["XSRF-TOKEN"]

202+

188203

189204 it "succeeds if XSRF header and cookie match, and JWT is valid" $ \port -> property

190205 $ \(user :: User) -> do

@@ -406,13 +421,14 @@ type API auths

406421 = Auth auths User :>

407422 ( Get '[JSON] Int

408423 :<|> ReqBody '[JSON] Int :> Post '[JSON] Int

409− :<|> NamedRoutes DummyRoutes

424+ :<|> "named" :> NamedRoutes DummyRoutes

410425 :<|> "header" :> Get '[JSON] (Headers '[Header "Blah" Int] Int)

411426#if MIN_VERSION_servant_server(0,15,0)

412427 :<|> "stream" :> StreamGet NoFraming OctetStream (SourceIO BS.ByteString)

413428#endif

414429 :<|> "raw" :> Raw

415430 )

431+ :<|> "uverb" :> Auth auths User :> UVerb 'GET '[JSON] '[WithStatus 200 Int, WithStatus 401 Text, WithStatus 403 Text]

416432 :<|> "login" :> ReqBody '[JSON] User :> Post '[JSON] (Headers '[ Header "Set-Cookie" SetCookie

417433 , Header "Set-Cookie" SetCookie ] NoContent)

418434 :<|> "logout" :> Get '[JSON] (Headers '[ Header "Set-Cookie" SetCookie

@@ -490,6 +506,11 @@ server ccfg =

490506 :<|> raw

491507 Indefinite -> throwAll err401

492508 _ -> throwAll err403

509+ ) :<|>

510+ (\authResult -> case authResult of

511+ Authenticated usr -> respond (WithStatus @200 (42 :: Int))

512+ Indefinite -> respond (WithStatus @401 $ pack "Authentication required")

513+ _ -> respond (WithStatus @403 $ pack "Forbidden")

493514 )

494515 :<|> getLogin

495516 :<|> getLogout

@@ -540,7 +561,7 @@ addJwtToHeader jwt = case jwt of

540561 $ defaults & header "Authorization" .~ ["Bearer " <> BSL.toStrict v]

541562

542563createJWT :: JWK -> JWSHeader () -> ClaimsSet -> IO (Either Error Crypto.JWT.SignedJWT)

543−createJWT k a b = runExceptT $ signClaims k a b

564+createJWT k a b = runJOSE $ signClaims k a b

544565

545566addJwtToCookie :: ToCompact a => CookieSettings -> Either Error a -> IO Options

546567addJwtToCookie ccfg jwt = case jwt >>= (return . encodeCompact) of

@@ -570,6 +591,12 @@ shouldMatchCookieNames cj patterns

570591 = fmap cookie_name (destroyCookieJar cj)

571592 `shouldMatchList` patterns

572593

594+shouldNotHaveCookies :: HCli.CookieJar -> [BS.ByteString] -> Expectation

595+shouldNotHaveCookies cj patterns =

596+ sequence_ $ (\cookieName -> cookieNames `shouldNotContain` [cookieName]) <$> patterns

597+ where cookieNames :: [BS.ByteString]

598+ cookieNames = cookie_name <$> destroyCookieJar cj

599+

573600shouldMatchCookieNameValues :: HCli.CookieJar -> [(BS.ByteString, BS.ByteString)] -> Expectation

574601shouldMatchCookieNameValues cj patterns

575602 = fmap ((,) <$> cookie_name <*> cookie_value) (destroyCookieJar cj)

servant-auth/servant-auth-swagger/servant-auth-swagger.cabal+1−1

@@ -31,7 +31,7 @@ library

3131 default-extensions: ConstraintKinds DataKinds DefaultSignatures DeriveFoldable DeriveFunctor DeriveGeneric DeriveTraversable FlexibleContexts FlexibleInstances FunctionalDependencies GADTs KindSignatures MultiParamTypeClasses OverloadedStrings RankNTypes ScopedTypeVariables TypeFamilies TypeOperators

3232 ghc-options: -Wall

3333 build-depends:

34− base >= 4.10 && < 4.17

34+ base >= 4.10 && < 4.18

3535 , text >= 1.2.3.0 && < 2.1

3636 , servant-swagger >= 1.1.5 && < 2

3737 , swagger2 >= 2.2.2 && < 3

servant-auth/servant-auth/servant-auth.cabal+2−2

@@ -33,10 +33,10 @@ library

3333 default-extensions: ConstraintKinds DataKinds DefaultSignatures DeriveFoldable DeriveFunctor DeriveGeneric DeriveTraversable FlexibleContexts FlexibleInstances FunctionalDependencies GADTs KindSignatures MultiParamTypeClasses OverloadedStrings RankNTypes ScopedTypeVariables TypeFamilies TypeOperators

3434 ghc-options: -Wall

3535 build-depends:

36− base >= 4.10 && < 4.17

36+ base >= 4.10 && < 4.18

3737 , containers >= 0.6 && < 0.7

3838 , aeson >= 1.3.1.1 && < 3

39− , jose >= 0.7.0.0 && < 0.10

39+ , jose >= 0.10 && < 0.11

4040 , lens >= 4.16.1 && < 5.3

4141 , servant >= 0.15 && < 0.20

4242 , text >= 1.2.3.0 && < 2.1

servant-auth/servant-auth/src/Servant/Auth.hs+1−1

@@ -27,7 +27,7 @@ instance HasLink sub => HasLink (Auth (tag :: [*]) value :> sub) where

2727

2828-- ** Combinators

2929

30−-- | A JSON Web Token (JWT) in the the Authorization header:

30+-- | A JSON Web Token (JWT) in the Authorization header:

3131--

3232-- @Authorization: Bearer \<token\>@

3333--

servant-client-core/servant-client-core.cabal+3−3

@@ -50,14 +50,14 @@ library

5050 --

5151 -- note: mtl lower bound is so low because of GHC-7.8

5252 build-depends:

53− base >= 4.9 && < 4.17

53+ base >= 4.9 && < 4.18

5454 , bytestring >= 0.10.8.1 && < 0.12

5555 , constraints >= 0.2 && < 0.14

5656 , containers >= 0.5.7.1 && < 0.7

5757 , deepseq >= 1.4.2.0 && < 1.5

5858 , text >= 1.2.3.0 && < 2.1

59− , transformers >= 0.5.2.0 && < 0.6

60− , template-haskell >= 2.11.1.0 && < 2.19

59+ , transformers >= 0.5.2.0 && < 0.7

60+ , template-haskell >= 2.11.1.0 && < 2.20

6161

6262 if !impl(ghc >= 8.2)

6363 build-depends:

servant-client-core/src/Servant/Client/Core/HasClient.hs+23−5

@@ -74,10 +74,10 @@ import Servant.API

7474 FromSourceIO (..), Header', Headers (..), HttpVersion,

7575 IsSecure, MimeRender (mimeRender),

7676 MimeUnrender (mimeUnrender), NoContent (NoContent),

77− NoContentVerb, QueryFlag, QueryParam', QueryParams, Raw,

77+ NoContentVerb, QueryFlag, QueryParam', QueryParams, Raw, RawM,

7878 ReflectMethod (..), RemoteHost, ReqBody', SBoolI, Stream,

7979 StreamBody', Summary, ToHttpApiData, ToSourceIO (..), Vault,

80− Verb, WithNamedContext, WithStatus (..), contentType, getHeadersHList,

80+ Verb, WithNamedContext, WithResource, WithStatus (..), contentType, getHeadersHList,

8181 getResponse, toEncodedUrlPiece, toUrlPiece, NamedRoutes)

8282import Servant.API.Generic

8383 (GenericMode(..), ToServant, ToServantApi

@@ -674,6 +674,16 @@ instance RunClient m => HasClient m Raw where

674674

675675 hoistClientMonad _ _ f cl = \meth -> f (cl meth)

676676

677+instance RunClient m => HasClient m RawM where

678+ type Client m RawM

679+ = H.Method -> m Response

680+

681+ clientWithRoute :: Proxy m -> Proxy RawM -> Request -> Client m RawM

682+ clientWithRoute _pm Proxy req httpMethod = do

683+ runRequest req { requestMethod = httpMethod }

684+

685+ hoistClientMonad _ _ f cl = \meth -> f (cl meth)

686+

677687-- | If you use a 'ReqBody' in one of your endpoints in your API,

678688-- the corresponding querying function will automatically take

679689-- an additional argument of the type specified by your 'ReqBody'.

@@ -776,6 +786,14 @@ instance HasClient m subapi =>

776786

777787 hoistClientMonad pm _ f cl = hoistClientMonad pm (Proxy :: Proxy subapi) f cl

778788

789+instance HasClient m subapi =>

790+ HasClient m (WithResource res :> subapi) where

791+

792+ type Client m (WithResource res :> subapi) = Client m subapi

793+ clientWithRoute pm Proxy = clientWithRoute pm (Proxy :: Proxy subapi)

794+

795+ hoistClientMonad pm _ f cl = hoistClientMonad pm (Proxy :: Proxy subapi) f cl

796+

779797instance ( HasClient m api

780798 ) => HasClient m (AuthProtect tag :> api) where

781799 type Client m (AuthProtect tag :> api)

@@ -894,7 +912,7 @@ infixl 2 /:

894912-- rootClient = client api

895913--

896914-- endpointClient :: ClientM Person

897−-- endpointClient = client // subApi // endpoint

915+-- endpointClient = client \/\/ subApi \/\/ endpoint

898916-- @

899917(//) :: a -> (a -> b) -> b

900918x // f = f x

@@ -927,10 +945,10 @@ x // f = f x

927945-- rootClient = client api

928946--

929947-- hello :: String -> ClientM String

930−-- hello name = rootClient // hello /: name

948+-- hello name = rootClient \/\/ hello \/: name

931949--

932950-- endpointClient :: ClientM Person

933−-- endpointClient = client // subApi /: "foobar123" // endpoint

951+-- endpointClient = client \/\/ subApi \/: "foobar123" \/\/ endpoint

934952-- @

935953(/:) :: (a -> b -> c) -> b -> a -> c

936954(/:) = flip

servant-client-ghcjs/servant-client-ghcjs.cabal+1−1

@@ -48,7 +48,7 @@ library

4848 , http-media >=0.6.2 && <0.9

4949 , http-types >=0.12 && <0.13

5050 , monad-control >=1.0.0.4 && <1.1

51− , mtl >=2.2.2 && <2.3

51+ , mtl ^>=2.2.2 || ^>=2.3.1

5252 , semigroupoids >=5.3 && <5.4

5353 , string-conversions >=0.3 && <0.5

5454 , transformers >=0.3 && <0.6

servant-client/servant-client.cabal+4−4

@@ -41,15 +41,15 @@ library

4141 -- Bundled with GHC: Lower bound to not force re-installs

4242 -- text and mtl are bundled starting with GHC-8.4

4343 build-depends:

44− base >= 4.9 && < 4.17

44+ base >= 4.9 && < 4.18

4545 , bytestring >= 0.10.8.1 && < 0.12

4646 , containers >= 0.5.7.1 && < 0.7

4747 , deepseq >= 1.4.2.0 && < 1.5

48− , mtl >= 2.2.2 && < 2.3

48+ , mtl ^>= 2.2.2 || ^>= 2.3.1

4949 , stm >= 2.4.5.1 && < 2.6

5050 , text >= 1.2.3.0 && < 2.1

51− , time >= 1.6.0.1 && < 1.12

52− , transformers >= 0.5.2.0 && < 0.6

51+ , time >= 1.6.0.1 && < 1.13

52+ , transformers >= 0.5.2.0 && < 0.7

5353

5454 if !impl(ghc >= 8.2)

5555 build-depends:

servant-client/src/Servant/Client/Internal/HttpClient/Streaming.hs+17−5

@@ -24,7 +24,8 @@ import Control.DeepSeq

2424 (NFData, force)

2525import Control.Exception

2626 (evaluate, throwIO)

27−import Control.Monad ()

27+import Control.Monad

28+ (unless)

2829import Control.Monad.Base

2930 (MonadBase (..))

3031import Control.Monad.Codensity

@@ -174,10 +175,21 @@ performRequest acceptStatus req = do

174175-- | TODO: support UVerb ('acceptStatus' argument, like in 'performRequest' above).

175176performWithStreamingRequest :: Request -> (StreamingResponse -> IO a) -> ClientM a

176177performWithStreamingRequest req k = do

177− m <- asks manager

178− burl <- asks baseUrl

179− createClientRequest <- asks makeClientRequest

180− request <- liftIO $ createClientRequest burl req

178+ ClientEnv m burl cookieJar' createClientRequest <- ask

179+ clientRequest <- liftIO $ createClientRequest burl req

180+ request <- case cookieJar' of

181+ Nothing -> pure clientRequest

182+ Just cj -> liftIO $ do

183+ now <- getCurrentTime

184+ atomically $ do

185+ oldCookieJar <- readTVar cj

186+ let (newRequest, newCookieJar) =

187+ Client.insertCookiesIntoRequest

188+ clientRequest

189+ oldCookieJar

190+ now

191+ writeTVar cj newCookieJar

192+ pure newRequest

181193 ClientM $ lift $ lift $ Codensity $ \k1 ->

182194 Client.withResponse request m $ \res -> do

183195 let status = Client.responseStatus res

servant-conduit/servant-conduit.cabal+2−2

@@ -31,8 +31,8 @@ library

3131 base >=4.9 && <5

3232 , bytestring >=0.10.8.1 && <0.12

3333 , conduit >=1.3.1 && <1.4

34− , mtl >=2.2.2 && <2.3

35− , resourcet >=1.2.2 && <1.3

34+ , mtl ^>=2.2.2 || ^>=2.3.1

35+ , resourcet >=1.2.2 && <1.4

3636 , servant >=0.15 && <0.20

3737 , unliftio-core >=0.1.2.0 && <0.3

3838 hs-source-dirs: src

servant-docs/golden/comprehensive.md+18

@@ -530,6 +530,24 @@

530530

531531```

532532

533+## GET /resource

534+

535+### Response:

536+

537+- Status code 200

538+- Headers: []

539+

540+- Supported content types are:

541+

542+ - `application/json;charset=utf-8`

543+ - `application/json`

544+

545+- Example (`application/json;charset=utf-8`, `application/json`):

546+

547+```javascript

548+

549+```

550+

533551## GET /streaming

534552

535553### Request:

servant-docs/servant-docs.cabal+1−1

@@ -41,7 +41,7 @@ library

4141 --

4242 -- note: mtl lower bound is so low because of GHC-7.8

4343 build-depends:

44− base >= 4.9 && < 4.17

44+ base >= 4.9 && < 4.18

4545 , bytestring >= 0.10.8.1 && < 0.12

4646 , text >= 1.2.3.0 && < 2.1

4747

servant-docs/src/Servant/Docs/Internal.hs+4−1

@@ -447,7 +447,7 @@ docsWith opts intros (ExtraInfo endpoints) p =

447447 & apiEndpoints %~ HM.unionWith (flip combineAction) endpoints

448448

449449

450−-- | Generate the docs for a given API that implements 'HasDocs' with with any

450+-- | Generate the docs for a given API that implements 'HasDocs' with any

451451-- number of introduction(s)

452452docsWithIntros :: HasDocs api => [DocIntro] -> Proxy api -> API

453453docsWithIntros intros = docsWith defaultDocOptions intros mempty

@@ -1144,6 +1144,9 @@ instance HasDocs api => HasDocs (Vault :> api) where

11441144instance HasDocs api => HasDocs (WithNamedContext name context api) where

11451145 docsFor Proxy = docsFor (Proxy :: Proxy api)

11461146

1147+instance HasDocs api => HasDocs (WithResource res :> api) where

1148+ docsFor Proxy = docsFor (Proxy :: Proxy api)

1149+

11471150instance (ToAuthInfo (BasicAuth realm usr), HasDocs api) => HasDocs (BasicAuth realm usr :> api) where

11481151 docsFor Proxy (endpoint, action) =

11491152 docsFor (Proxy :: Proxy api) (endpoint, action')

servant-foreign/servant-foreign.cabal+1−1

@@ -41,7 +41,7 @@ library

4141 --

4242 -- note: mtl lower bound is so low because of GHC-7.8

4343 build-depends:

44− base >= 4.9 && < 4.17

44+ base >= 4.9 && < 4.18

4545 , text >= 1.2.3.0 && < 2.1

4646

4747 -- Servant dependencies

servant-foreign/src/Servant/Foreign/Internal.hs+7

@@ -487,6 +487,13 @@ instance HasForeign lang ftype api =>

487487

488488 foreignFor lang ftype Proxy = foreignFor lang ftype (Proxy :: Proxy api)

489489

490+instance HasForeign lang ftype api =>

491+ HasForeign lang ftype (WithResource res :> api) where

492+

493+ type Foreign ftype (WithResource res :> api) = Foreign ftype api

494+

495+ foreignFor lang ftype Proxy = foreignFor lang ftype (Proxy :: Proxy api)

496+

490497instance HasForeign lang ftype api

491498 => HasForeign lang ftype (HttpVersion :> api) where

492499 type Foreign ftype (HttpVersion :> api) = Foreign ftype api

servant-http-streams/servant-http-streams.cabal+4−4

@@ -38,14 +38,14 @@ library

3838 -- Bundled with GHC: Lower bound to not force re-installs

3939 -- text and mtl are bundled starting with GHC-8.4

4040 build-depends:

41− base >= 4.9 && < 4.17

41+ base >= 4.9 && < 4.18

4242 , bytestring >= 0.10.8.1 && < 0.12

4343 , containers >= 0.5.7.1 && < 0.7

4444 , deepseq >= 1.4.2.0 && < 1.5

45− , mtl >= 2.2.2 && < 2.3

45+ , mtl ^>= 2.2.2 || ^>= 2.3.1

4646 , text >= 1.2.3.0 && < 2.1

47− , time >= 1.6.0.1 && < 1.12

48− , transformers >= 0.5.2.0 && < 0.6

47+ , time >= 1.6.0.1 && < 1.13

48+ , transformers >= 0.5.2.0 && < 0.7

4949

5050 if !impl(ghc >= 8.2)

5151 build-depends:

servant-machines/servant-machines.cabal+1−1

@@ -31,7 +31,7 @@ library

3131 base >=4.9 && <5

3232 , bytestring >=0.10.8.1 && <0.12

3333 , machines >=0.6.4 && <0.8

34− , mtl >=2.2.2 && <2.3

34+ , mtl ^>=2.2.2 || ^>=2.3.1

3535 , servant >=0.15 && <0.20

3636 hs-source-dirs: src

3737 default-language: Haskell2010

servant-pipes/servant-pipes.cabal+1−1

@@ -32,7 +32,7 @@ library

3232 , bytestring >=0.10.8.1 && <0.12

3333 , pipes >=4.3.9 && <4.4

3434 , pipes-safe >=2.3.1 && <2.4

35− , mtl >=2.2.2 && <2.3

35+ , mtl ^>=2.2.2 || ^>=2.3.1

3636 , monad-control >=1.0.2.3 && <1.1

3737 , servant >=0.15 && <0.20

3838 hs-source-dirs: src

servant-server/CHANGELOG.md+6

@@ -3,11 +3,17 @@

33

44Package versions follow the [Package Versioning Policy](https://pvp.haskell.org/): in A.B.C, bumps to either A or B represent major versions.

55

6+0.19.2

7+------

8+

9+Compatibility with GHC 9.4, see [PR #1592](https://github.com/haskell-servant/servant/pull/1592).

10+

6110.19.1

712------

813

914- Add `MonadFail` instance for `Handler` wrt [#1545](https://github.com/haskell-servant/servant/issues/1545)

1015- Support GHC 9.2 [#1525](https://github.com/haskell-servant/servant/issues/1525)

16+- Add capture hints in `Router` type for debug and display purposes [PR #1556] (https://github.com/haskell-servant/servant/pull/1556)

1117

12180.19

1319----

servant-server/servant-server.cabal+8−8

@@ -1,6 +1,6 @@

11cabal-version: 2.2

22name: servant-server

3−version: 0.19.1

3+version: 0.19.2

44

55synopsis: A family of combinators for defining webservices APIs and serving them

66category: Servant, Web

@@ -23,7 +23,7 @@ author: Servant Contributors

2323maintainer: haskell-servant-maintainers@googlegroups.com

2424copyright: 2014-2016 Zalora South East Asia Pte Ltd, 2016-2019 Servant Contributors

2525build-type: Simple

26−tested-with: GHC ==8.6.5 || ==8.8.4 || ==8.10.2 || ==9.0.1

26+tested-with: GHC ==8.6.5 || ==8.8.4 || ==8.10.7 || ==9.0.2 || ==9.2.4 || ==9.4.3

2727

2828extra-source-files:

2929 CHANGELOG.md

@@ -60,20 +60,20 @@ library

6060 -- Bundled with GHC: Lower bound to not force re-installs

6161 -- text and mtl are bundled starting with GHC-8.4

6262 build-depends:

63− base >= 4.9 && < 4.17

63+ base >= 4.9 && < 4.18

6464 , bytestring >= 0.10.8.1 && < 0.12

6565 , constraints >= 0.2 && < 0.14

6666 , containers >= 0.5.7.1 && < 0.7

67− , mtl >= 2.2.2 && < 2.3

67+ , mtl ^>= 2.2.2 || ^>= 2.3.1

6868 , text >= 1.2.3.0 && < 2.1

69− , transformers >= 0.5.2.0 && < 0.6

69+ , transformers >= 0.5.2.0 && < 0.7

7070 , filepath >= 1.4.1.1 && < 1.5

7171

7272 -- Servant dependencies

7373 -- strict dependency as we re-export 'servant' things.

7474 build-depends:

7575 servant >= 0.19 && < 0.20

76− , http-api-data >= 0.4.1 && < 0.4.4

76+ , http-api-data >= 0.4.1 && < 0.5.1

7777

7878 -- Other dependencies: Lower bound around what is in the latest Stackage LTS.

7979 -- Here can be exceptions if we really need features from the newer versions.

@@ -88,10 +88,10 @@ library

8888 , network >= 2.8 && < 3.2

8989 , sop-core >= 0.4.0.0 && < 0.6

9090 , string-conversions >= 0.4.0.1 && < 0.5

91− , resourcet >= 1.2.2 && < 1.3

91+ , resourcet >= 1.2.2 && < 1.4

9292 , tagged >= 0.8.6 && < 0.9

9393 , transformers-base >= 0.4.5.2 && < 0.5

94− , wai >= 3.2.1.2 && < 3.3

94+ , wai >= 3.2.2.1 && < 3.3

9595 , wai-app-static >= 3.1.6.2 && < 3.2

9696 , word8 >= 0.1.3 && < 0.2

9797

servant-server/src/Servant/Server/Experimental/Auth.hs+2−1

@@ -1,5 +1,6 @@

11{-# OPTIONS_GHC -fno-warn-orphans #-}

22{-# LANGUAGE DeriveDataTypeable #-}

3+{-# LANGUAGE DeriveFunctor #-}

34{-# LANGUAGE DeriveGeneric #-}

45{-# LANGUAGE FlexibleContexts #-}

56{-# LANGUAGE FlexibleInstances #-}

@@ -44,7 +45,7 @@ type family AuthServerData a :: *

4445-- NOTE: THIS API IS EXPERIMENTAL AND SUBJECT TO CHANGE

4546newtype AuthHandler r usr = AuthHandler

4647 { unAuthHandler :: r -> Handler usr }

47− deriving (Generic, Typeable)

48+ deriving (Functor, Generic, Typeable)

4849

4950-- | NOTE: THIS API IS EXPERIMENTAL AND SUBJECT TO CHANGE

5051mkAuthHandler :: (r -> Handler usr) -> AuthHandler r usr

servant-server/src/Servant/Server/Internal.hs+87−7

@@ -1,10 +1,12 @@

11{-# LANGUAGE AllowAmbiguousTypes #-}

22{-# LANGUAGE ConstraintKinds #-}

3+{-# LANGUAGE CPP #-}

34{-# LANGUAGE DataKinds #-}

45{-# LANGUAGE DeriveDataTypeable #-}

56{-# LANGUAGE FlexibleContexts #-}

67{-# LANGUAGE FlexibleInstances #-}

78{-# LANGUAGE InstanceSigs #-}

9+{-# LANGUAGE LambdaCase #-}

810{-# LANGUAGE MultiParamTypeClasses #-}

911{-# LANGUAGE OverloadedStrings #-}

1012{-# LANGUAGE PolyKinds #-}

@@ -34,9 +36,10 @@ module Servant.Server.Internal

3436import Control.Monad

3537 (join, when)

3638import Control.Monad.Trans

37− (liftIO)

39+ (liftIO, lift)

3840import Control.Monad.Trans.Resource

39− (runResourceT)

41+ (runResourceT, ReleaseKey)

42+import Data.Acquire

4043import qualified Data.ByteString as B

4144import qualified Data.ByteString.Builder as BB

4245import qualified Data.ByteString.Char8 as BC8

@@ -63,7 +66,7 @@ import Network.HTTP.Types hiding

6366import Network.Socket

6467 (SockAddr)

6568import Network.Wai

66− (Application, Request, httpVersion, isSecure, lazyRequestBody,

69+ (Application, Request, Response, ResponseReceived, httpVersion, isSecure, lazyRequestBody,

6770 queryString, remoteHost, getRequestBodyChunk, requestHeaders,

6871 requestMethod, responseLBS, responseStream, vault)

6972import Prelude ()

@@ -73,10 +76,10 @@ import Servant.API

7376 CaptureAll, Description, EmptyAPI, Fragment,

7477 FramingRender (..), FramingUnrender (..), FromSourceIO (..),

7578 Header', If, IsSecure (..), NoContentVerb, QueryFlag,

76− QueryParam', QueryParams, Raw, ReflectMethod (reflectMethod),

79+ QueryParam', QueryParams, Raw, RawM, ReflectMethod (reflectMethod),

7780 RemoteHost, ReqBody', SBool (..), SBoolI (..), SourceIO,

7881 Stream, StreamBody', Summary, ToSourceIO (..), Vault, Verb,

79− WithNamedContext, NamedRoutes)

82+ WithNamedContext, WithResource, NamedRoutes)

8083import Servant.API.Generic (GenericMode(..), ToServant, ToServantApi, GServantProduct, toServant, fromServant)

8184import Servant.API.ContentTypes

8285 (AcceptHeader (..), AllCTRender (..), AllCTUnrender (..),

@@ -114,6 +117,10 @@ import Servant.API.TypeLevel

114117 (AtLeastOneFragment, FragmentUnique)

115118

116119class HasServer api context where

120+ -- | The type of a server for this API, given a monad to run effects in.

121+ --

122+ -- Note that the result kind is @*@, so it is /not/ a monad transformer, unlike

123+ -- what the @T@ in the name might suggest.

117124 type ServerT api (m :: * -> *) :: *

118125

119126 route ::

@@ -243,6 +250,42 @@ instance (KnownSymbol capture, FromHttpApiData a, Typeable a

243250 formatError = urlParseErrorFormatter $ getContextEntry (mkContextWithErrorFormatter context)

244251 hint = CaptureHint (T.pack $ symbolVal $ Proxy @capture) (typeRep (Proxy :: Proxy [a]))

245252

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.

258+

259+-- The creation and destruction are done using a 'Data.Acquire.Acquire'

260+-- provided via server 'Context'.

261+--

262+-- Example

263+--

264+-- > type MyApi = WithResource Handle :> "writeToFile" :> Post '[JSON] NoContent

265+-- >

266+-- > server :: Server MyApi

267+-- > server = writeToFile

268+-- > where writeToFile :: (ReleaseKey, Handle) -> Handler NoContent

269+-- > writeToFile (_, h) = hPutStrLn h "message"

270+--

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

273+-- if desired.

274+

275+instance (HasServer api ctx, HasContextEntry ctx (Acquire a))

276+ => HasServer (WithResource a :> api) ctx where

277+

278+ type ServerT (WithResource a :> api) m = (ReleaseKey, a) -> ServerT api m

279+

280+ hoistServerWithContext _ pc nt s = hoistServerWithContext (Proxy @api) pc nt . s

281+

282+ route Proxy context d = route (Proxy @api) context (d `addParameterCheck` allocateResource)

283+ where

284+ allocateResource :: DelayedIO (ReleaseKey, a)

285+ allocateResource = DelayedIO $ lift $ allocateAcquire (getContextEntry context)

286+

287+

288+

246289allowedMethodHead :: Method -> Request -> Bool

247290allowedMethodHead method request = method == methodGet && requestMethod request == methodHead

248291

@@ -610,6 +653,35 @@ instance HasServer Raw context where

610653 Fail a -> respond $ Fail a

611654 FailFatal e -> respond $ FailFatal e

612655

656+-- | Just pass the request to the underlying application and serve its response.

657+--

658+-- Example:

659+--

660+-- > type MyApi = "images" :> Raw

661+-- >

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

666+

667+ route

668+ :: Proxy RawM

669+ -> Context context

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)) >>=

676+ \case

677+ Left e -> respond' $ FailFatal e

678+ Right a -> pure a

679+ Fail e -> respond' $ Fail e

680+ FailFatal e -> respond' $ FailFatal e

681+

682+ hoistServerWithContext _ _ f srvM = \req respond -> f (srvM req respond)

683+

684+

613685-- | If you use 'ReqBody' in one of the endpoints for your API,

614686-- this automatically requires your server-side handler to be a function

615687-- that takes an argument of the type specified by 'ReqBody'.

@@ -823,7 +895,11 @@ instance (HasContextEntry context (NamedContext name subContext), HasServer subA

823895-------------------------------------------------------------------------------

824896

825897-- Erroring instance for 'HasServer' when a combinator is not fully applied

826−instance TypeError (PartialApplication @(Type -> [Type] -> Constraint) HasServer arr) => HasServer ((arr :: a -> b) :> sub) context

898+instance TypeError (PartialApplication

899+#if __GLASGOW_HASKELL__ >= 904

900+ @(Type -> [Type] -> Constraint)

901+#endif

902+ HasServer arr) => HasServer ((arr :: a -> b) :> sub) context

827903 where

828904 type ServerT (arr :> sub) _ = TypeError (PartialApplication (HasServer :: * -> [*] -> Constraint) arr)

829905 route = error "unreachable"

@@ -867,7 +943,11 @@ type HasServerArrowTypeError a b =

867943-- XXX: This omits the @context@ parameter, e.g.:

868944--

869945-- "There is no instance for HasServer (Bool :> …)". Do we care ?

870−instance {-# OVERLAPPABLE #-} TypeError (NoInstanceForSub @(Type -> [Type] -> Constraint) HasServer ty) => HasServer (ty :> sub) context

946+instance {-# OVERLAPPABLE #-} TypeError (NoInstanceForSub

947+#if __GLASGOW_HASKELL__ >= 904

948+ @(Type -> [Type] -> Constraint)

949+#endif

950+ HasServer ty) => HasServer (ty :> sub) context

871951

872952instance {-# OVERLAPPABLE #-} TypeError (NoInstanceFor (HasServer api context)) => HasServer api context

873953

servant-server/src/Servant/Server/Internal/Router.hs+19−1

@@ -28,9 +28,12 @@ import Servant.Server.Internal.ServerError

2828

2929type Router env = Router' env RoutingApplication

3030

31+-- | Holds information about pieces of url that are captured as variables.

3132data CaptureHint = CaptureHint

3233 { captureName :: Text

34+ -- ^ Holds the name of the captured variable

3335 , captureType :: TypeRep

36+ -- ^ Holds the type of the captured variable

3437 }

3538 deriving (Show, Eq)

3639

@@ -54,10 +57,21 @@ data Router' env a =

5457 -- for the empty path, to be tried in order

5558 | CaptureRouter [CaptureHint] (Router' (Text, env) a)

5659 -- ^ first path component is passed to the child router in its

57− -- environment and removed afterwards

60+ -- environment and removed afterwards.

61+ -- The first argument is a list of hints for all variables that can be

62+ -- captured by the router. The fact that it is a list is counter-intuitive,

63+ -- because the 'Capture' combinator only allows to capture a single varible,

64+ -- with a single name and a single type. However, the 'choice' smart

65+ -- constructor may merge two 'Capture' combinators with different hints, thus

66+ -- forcing the type to be '[CaptureHint]'.

67+ -- Because 'CaptureRouter' is built from a 'Capture' combinator, the list of

68+ -- hints should always be non-empty.

5869 | CaptureAllRouter [CaptureHint] (Router' ([Text], env) a)

5970 -- ^ all path components are passed to the child router in its

6071 -- environment and are removed afterwards

72+ -- The first argument is a hint for the list of variables that can be

73+ -- captured by the router. Note that the 'captureType' field of the hint

74+ -- should always be '[a]' for some 'a'.

6175 | RawRouter (env -> a)

6276 -- ^ to be used for routes we do not know anything about

6377 | Choice (Router' env a) (Router' env a)

@@ -101,6 +115,10 @@ choice router1 router2 = Choice router1 router2

101115data RouterStructure =

102116 StaticRouterStructure (Map Text RouterStructure) Int

103117 | CaptureRouterStructure [CaptureHint] RouterStructure

118+ -- ^ The first argument holds information about variables

119+ -- that are captured by the router. There may be several hints

120+ -- if several routers have been aggregated by the 'choice'

121+ -- smart constructor.

104122 | RawRouterStructure

105123 | ChoiceStructure RouterStructure RouterStructure

106124 deriving (Eq, Show)

servant-server/test/Servant/ServerSpec.hs+54−6

@@ -17,10 +17,14 @@ import Prelude.Compat

1717

1818import Control.Monad

1919 (forM_, unless, when)

20+import Control.Monad.Reader (runReaderT, ask)

2021import Control.Monad.Error.Class

2122 (MonadError (..))

23+import Control.Monad.IO.Class (MonadIO(..))

2224import Data.Aeson

2325 (FromJSON, ToJSON, decode', encode)

26+import Data.Acquire

27+ (Acquire, mkAcquire)

2428import qualified Data.ByteString as BS

2529import qualified Data.ByteString.Base64 as Base64

2630import Data.Char

@@ -52,19 +56,19 @@ import Servant.API

5256 Delete, EmptyAPI, Fragment, Get, HasStatus (StatusOf), Header,

5357 Headers, HttpVersion, IsSecure (..), JSON, Lenient,

5458 NoContent (..), NoContentVerb, NoFraming, OctetStream, Patch,

55− PlainText, Post, Put, QueryFlag, QueryParam, QueryParams, Raw,

59+ PlainText, Post, Put, QueryFlag, QueryParam, QueryParams, Raw, RawM,

5660 RemoteHost, ReqBody, SourceIO, StdMethod (..), Stream, Strict,

5761 UVerb, Union, Verb, WithStatus (..), addHeader)

5862import Servant.Server

59− (Context ((:.), EmptyContext), Handler, Server, Tagged (..),

60− emptyServer, err401, err403, err404, respond, serve,

63+ (Context ((:.), EmptyContext), Handler, Server, ServerT, Tagged (..),

64+ emptyServer, err401, err403, err404, hoistServer, respond, serve,

6165 serveWithContext)

6266import Servant.Test.ComprehensiveAPI

6367import qualified Servant.Types.SourceT as S

6468import Test.Hspec

6569 (Spec, context, describe, it, shouldBe, shouldContain)

6670import Test.Hspec.Wai

67− (get, liftIO, matchHeaders, matchStatus, shouldRespondWith,

71+ (get, matchHeaders, matchStatus, shouldRespondWith,

6872 with, (<:>))

6973import qualified Test.Hspec.Wai as THW

7074

@@ -81,8 +85,11 @@ import Servant.Server.Internal.Context

8185-- This declaration simply checks that all instances are in place.

8286_ = serveWithContext comprehensiveAPI comprehensiveApiContext

8387

84−comprehensiveApiContext :: Context '[NamedContext "foo" '[]]

85−comprehensiveApiContext = NamedContext EmptyContext :. EmptyContext

88+comprehensiveApiContext :: Context '[NamedContext "foo" '[], Acquire Int]

89+comprehensiveApiContext =

90+ NamedContext EmptyContext :.

91+ mkAcquire (pure 10) (\_ -> pure ()) :.

92+ EmptyContext

8693

8794-- * Specs

8895

@@ -97,6 +104,7 @@ spec = do

97104 reqBodySpec

98105 headerSpec

99106 rawSpec

107+ rawMSpec

100108 alternativeSpec

101109 responseHeadersSpec

102110 uverbResponseHeadersSpec

@@ -605,6 +613,46 @@ rawSpec = do

605613

606614-- }}}

607615------------------------------------------------------------------------------

616+-- * rawMSpec {{{

617+------------------------------------------------------------------------------

618+

619+type RawMApi = "foo" :> RawM

620+

621+rawMApi :: Proxy RawMApi

622+rawMApi = Proxy

623+

624+rawMServer :: (Monad m, MonadIO m, Show a) => (Request -> m a) -> ServerT RawMApi m

625+rawMServer f req resp = liftIO . resp . responseLBS ok200 [] . cs . show =<< f req

626+

627+rawMSpec :: Spec

628+rawMSpec = do

629+ describe "Servant.API.RawM" $ do

630+ it "gives access to monadic context" $ do

631+ flip runSession (serve rawMApi

632+ (hoistServer rawMApi (flip runReaderT (42 :: Integer)) (rawMServer (const ask)))) $ do

633+ response <- Network.Wai.Test.request defaultRequest{

634+ pathInfo = ["foo"]

635+ }

636+ liftIO $ do

637+ simpleBody response `shouldBe` "42"

638+

639+ it "lets users throw servant errors" $ do

640+ flip runSession (serve rawMApi (rawMServer (const $ throwError err404 >> pure (42 :: Integer)))) $ do

641+ response <- Network.Wai.Test.request defaultRequest{

642+ pathInfo = ["foo"]

643+ }

644+ liftIO $ do

645+ statusCode (simpleStatus response) `shouldBe` 404

646+

647+ it "gets the pathInfo modified" $ do

648+ flip runSession (serve rawMApi (rawMServer (pure . pathInfo))) $ do

649+ response <- Network.Wai.Test.request defaultRequest{

650+ pathInfo = ["foo", "bar"]

651+ }

652+ liftIO $ do

653+ simpleBody response `shouldBe` cs (show ["bar" :: String])

654+-- }}}

655+------------------------------------------------------------------------------

608656-- * alternativeSpec {{{

609657------------------------------------------------------------------------------

610658type AlternativeApi =

servant-swagger/src/Servant/Swagger/Internal.hs+4

@@ -304,6 +304,10 @@ instance (HasSwagger sub) => HasSwagger (HttpVersion :> sub) where

304304instance (HasSwagger sub) => HasSwagger (WithNamedContext x c sub) where

305305 toSwagger _ = toSwagger (Proxy :: Proxy sub)

306306

307+-- | @'WithResource'@ combinator does not change our specification at all.

308+instance (HasSwagger sub) => HasSwagger (WithResource res :> sub) where

309+ toSwagger _ = toSwagger (Proxy :: Proxy sub)

310+

307311instance (KnownSymbol sym, HasSwagger sub) => HasSwagger (sym :> sub) where

308312 toSwagger _ = prependPath piece (toSwagger (Proxy :: Proxy sub))

309313 where

servant/CHANGELOG.md+5

@@ -2,6 +2,11 @@

22

33Package versions follow the [Package Versioning Policy](https://pvp.haskell.org/): in A.B.C, bumps to either A or B represent major versions.

44

5+0.19.1

6+------

7+

8+Compatibility with GHC 9.4, see [PR #1592](https://github.com/haskell-servant/servant/pull/1592).

9+

5100.19

611----

712

servant/servant.cabal+6−5

@@ -1,6 +1,6 @@

11cabal-version: 2.2

22name: servant

3−version: 0.19

3+version: 0.19.1

44

55synopsis: A family of combinators for defining webservices APIs

66category: Servant, Web

@@ -62,6 +62,7 @@ library

6262 Servant.API.Vault

6363 Servant.API.Verbs

6464 Servant.API.WithNamedContext

65+ Servant.API.WithResource

6566

6667 -- Types

6768 exposed-modules:

@@ -80,19 +81,19 @@ library

8081 --

8182 -- note: mtl lower bound is so low because of GHC-7.8

8283 build-depends:

83− base >= 4.9 && < 4.17

84+ base >= 4.9 && < 4.18

8485 , bytestring >= 0.10.8.1 && < 0.12

8586 , constraints >= 0.2

86− , mtl >= 2.2.2 && < 2.3

87+ , mtl ^>= 2.2.2 || ^>= 2.3.1

8788 , sop-core >= 0.4.0.0 && < 0.6

88− , transformers >= 0.5.2.0 && < 0.6

89+ , transformers >= 0.5.2.0 && < 0.7

8990 , text >= 1.2.3.0 && < 2.1

9091

9192

9293 -- We depend (heavily) on the API of these packages:

9394 -- i.e. re-export, or allow using without direct dependency

9495 build-depends:

95− http-api-data >= 0.4.1 && < 0.4.4

96+ http-api-data >= 0.4.1 && < 0.5.1

9697 , singleton-bool >= 0.1.4 && < 0.1.7

9798

9899 -- Other dependencies: Lower bound around what is in the latest Stackage LTS.

servant/src/Servant/API.hs+10−6

@@ -31,6 +31,8 @@ module Servant.API (

3131 -- | Access the location for arbitrary data to be shared by applications and middleware

3232 module Servant.API.WithNamedContext,

3333 -- | Access context entries in combinators in servant-server

34+ module Servant.API.WithResource,

35+ -- | Access a managed resource scoped to a single request

3436

3537 -- * Actual endpoints, distinguished by HTTP method

3638 module Servant.API.Verbs,

@@ -101,21 +103,23 @@ import Servant.API.Experimental.Auth

101103 (AuthProtect)

102104import Servant.API.Fragment

103105 (Fragment)

106+import Servant.API.Generic

107+ (AsApi, GServantProduct, GenericMode ((:-)), GenericServant,

108+ ToServant, ToServantApi, fromServant, genericApi, toServant)

104109import Servant.API.Header

105110 (Header, Header')

106−import Servant.API.Generic

107− (GenericMode ((:-)), AsApi, ToServant, ToServantApi, GServantProduct,

108− GenericServant, fromServant, toServant, genericApi)

109111import Servant.API.HttpVersion

110112 (HttpVersion (..))

111113import Servant.API.IsSecure

112114 (IsSecure (..))

113115import Servant.API.Modifiers

114116 (Lenient, Optional, Required, Strict)

117+import Servant.API.NamedRoutes

118+ (NamedRoutes)

115119import Servant.API.QueryParam

116120 (QueryFlag, QueryParam, QueryParam', QueryParams)

117121import Servant.API.Raw

118− (Raw)

122+ (Raw, RawM)

119123import Servant.API.RemoteHost

120124 (RemoteHost)

121125import Servant.API.ReqBody

@@ -137,8 +141,6 @@ import Servant.API.UVerb

137141 Unique, WithStatus (..), inject, statusOf)

138142import Servant.API.Vault

139143 (Vault)

140−import Servant.API.NamedRoutes

141− (NamedRoutes)

142144import Servant.API.Verbs

143145 (Delete, DeleteAccepted, DeleteNoContent,

144146 DeleteNonAuthoritative, Get, GetAccepted, GetNoContent,

@@ -150,6 +152,8 @@ import Servant.API.Verbs

150152 ReflectMethod (reflectMethod), StdMethod (..), Verb)

151153import Servant.API.WithNamedContext

152154 (WithNamedContext)

155+import Servant.API.WithResource

156+ (WithResource)

153157import Servant.Links

154158 (HasLink (..), IsElem, IsElem', Link, URI (..), safeLink)

155159import Web.HttpApiData

servant/src/Servant/API/Raw.hs+3

@@ -15,3 +15,6 @@ import Data.Typeable

1515-- <https://hackage.haskell.org/package/servant-server/docs/Servant-Server-StaticFiles.html Servant.Server.StaticFiles>

1616-- to serve static files stored in a particular directory on your filesystem

1717data Raw deriving Typeable

18+

19+-- | Variant of 'Raw' that lets you access the underlying monadic context to process the request.

20+data RawM deriving Typeable

servant/src/Servant/API/ResponseHeaders.hs+23

@@ -8,6 +8,7 @@

88{-# LANGUAGE PolyKinds #-}

99{-# LANGUAGE ScopedTypeVariables #-}

1010{-# LANGUAGE TypeFamilies #-}

11+{-# LANGUAGE TypeFamilyDependencies #-}

1112{-# LANGUAGE TypeOperators #-}

1213{-# LANGUAGE UndecidableInstances #-}

1314{-# OPTIONS_HADDOCK not-home #-}

@@ -51,6 +52,9 @@ import Prelude ()

5152import Prelude.Compat

5253import Servant.API.Header

5354 (Header)

55+import Servant.API.UVerb.Union

56+import qualified Data.SOP.BasicFunctors as SOP

57+import qualified Data.SOP.NS as SOP

5458

5559-- | Response Header objects. You should never need to construct one directly.

5660-- Instead, use 'addOptionalHeader'.

@@ -170,6 +174,25 @@ instance {-# OVERLAPPABLE #-} ( KnownSymbol h, ToHttpApiData v , new ~ Headers '

170174 => AddHeader h v a new where

171175 addOptionalHeader hdr resp = Headers resp (HCons hdr HNil)

172176

177+-- Instances to decorate all responses in a 'Union' with headers. The functional

178+-- dependencies force us to consider singleton lists as the base case in the

179+-- recursion (it is impossible to determine h and v otherwise from old / new

180+-- responses if the list is empty).

181+instance (AddHeader h v old new) => AddHeader h v (Union '[old]) (Union '[new]) where

182+ addOptionalHeader hdr resp =

183+ SOP.Z $ SOP.I $ addOptionalHeader hdr $ SOP.unI $ SOP.unZ $ resp

184+

185+instance

186+ ( AddHeader h v old new, AddHeader h v (Union oldrest) (Union newrest)

187+ -- This ensures that the remainder of the response list is _not_ empty

188+ -- It is necessary to prevent the two instances for union types from

189+ -- overlapping.

190+ , oldrest ~ (a ': as), newrest ~ (b ': bs))

191+ => AddHeader h v (Union (old ': (a ': as))) (Union (new ': (b ': bs))) where

192+ addOptionalHeader hdr resp = case resp of

193+ SOP.Z (SOP.I rHead) -> SOP.Z $ SOP.I $ addOptionalHeader hdr rHead

194+ SOP.S rOthers -> SOP.S $ addOptionalHeader hdr rOthers

195+

173196-- | @addHeader@ adds a header to a response. Note that it changes the type of

174197-- the value in the following ways:

175198--

servant/src/Servant/API/TypeLevel.hs+3−3

@@ -110,7 +110,7 @@ type family IsElem' a s :: Constraint

110110--

111111-- >>> ok (Proxy :: Proxy (IsElem ("bye" :> Get '[JSON] Int) SampleAPI))

112112-- ...

113−-- ... Could not deduce...

113+-- ... Could not ...

114114-- ...

115115--

116116-- An endpoint is considered within an api even if it is missing combinators

@@ -151,7 +151,7 @@ type family IsElem endpoint api :: Constraint where

151151--

152152-- >>> ok (Proxy :: Proxy (IsSubAPI (SampleAPI :<|> Get '[JSON] Int) SampleAPI))

153153-- ...

154−-- ... Could not deduce...

154+-- ... Could not ...

155155-- ...

156156--

157157-- This uses @IsElem@ for checking; thus the note there applies here.

@@ -174,7 +174,7 @@ type family AllIsElem xs api :: Constraint where

174174--

175175-- >>> ok (Proxy :: Proxy (IsIn (Get '[JSON] Int) (Header "h" Bool :> Get '[JSON] Int)))

176176-- ...

177−-- ... Could not deduce...

177+-- ... Could not ...

178178-- ...

179179type family IsIn (endpoint :: *) (api :: *) :: Constraint where

180180 IsIn e (sa :<|> sb) = Or (IsIn e sa) (IsIn e sb)

servant/src/Servant/API/UVerb.hs+3

@@ -38,6 +38,7 @@ import GHC.TypeLits (Nat)

3838import Network.HTTP.Types (Status, StdMethod)

3939import Servant.API.ContentTypes (JSON, PlainText, FormUrlEncoded, OctetStream, NoContent, MimeRender(mimeRender), MimeUnrender(mimeUnrender))

4040import Servant.API.Status (KnownStatus, statusVal)

41+import Servant.API.ResponseHeaders (Headers)

4142import Servant.API.UVerb.Union

4243

4344class KnownStatus (StatusOf a) => HasStatus (a :: *) where

@@ -86,6 +87,8 @@ newtype WithStatus (k :: Nat) a = WithStatus a

8687instance KnownStatus n => HasStatus (WithStatus n a) where

8788 type StatusOf (WithStatus n a) = n

8889

90+instance HasStatus a => HasStatus (Headers ls a) where

91+ type StatusOf (Headers ls a) = StatusOf a

8992

9093-- | A variant of 'Verb' that can have any of a number of response values and status codes.

9194--

servant/src/Servant/API/UVerb/Union.hs+2−2

@@ -128,9 +128,9 @@ type DuplicateElementError (rs :: [k]) =

128128 ':$$: 'Text " " ':<>: 'ShowType rs

129129

130130type family Elem (x :: k) (xs :: [k]) :: Bool where

131+ Elem x (x ': _) = 'True

132+ Elem x (_ ': xs) = Elem x xs

131133 Elem _ '[] = 'False

132− Elem x (x' ': xs) =

133− If (x == x') 'True (Elem x xs)

134134

135135type family Unique xs :: Constraint where

136136 Unique xs = If (Nubbed xs == 'True) (() :: Constraint) (TypeError (DuplicateElementError xs))

servant/src/Servant/API/WithResource.hsnew file+3

@@ -0,0 +1,3 @@

1+module Servant.API.WithResource (WithResource) where

2+

3+data WithResource res

servant/src/Servant/Links.hs+23−4

@@ -1,5 +1,6 @@

11{-# LANGUAGE AllowAmbiguousTypes #-}

22{-# LANGUAGE ConstraintKinds #-}

3+{-# LANGUAGE CPP #-}

34{-# LANGUAGE DataKinds #-}

45{-# LANGUAGE FlexibleContexts #-}

56{-# LANGUAGE FlexibleInstances #-}

@@ -91,7 +92,7 @@

9192-- >>> let bad_link = Proxy :: Proxy ("hello" :> Delete '[JSON] NoContent)

9293-- >>> safeLink api bad_link

9394-- ...

94−-- ...Could not deduce...

95+-- ...Could not ...

9596-- ...

9697--

9798-- This error is essentially saying that the type family couldn't find

@@ -174,7 +175,7 @@ import Servant.API.NamedRoutes

174175import Servant.API.QueryParam

175176 (QueryFlag, QueryParam', QueryParams)

176177import Servant.API.Raw

177− (Raw)

178+ (Raw, RawM)

178179import Servant.API.RemoteHost

179180 (RemoteHost)

180181import Servant.API.ReqBody

@@ -192,6 +193,8 @@ import Servant.API.Verbs

192193 (Verb, NoContentVerb)

193194import Servant.API.WithNamedContext

194195 (WithNamedContext)

196+import Servant.API.WithResource

197+ (WithResource)

195198import Web.HttpApiData

196199import Data.Kind

197200 (Type)

@@ -557,6 +560,10 @@ instance HasLink sub => HasLink (WithNamedContext name context sub) where

557560 type MkLink (WithNamedContext name context sub) a = MkLink sub a

558561 toLink toA _ = toLink toA (Proxy :: Proxy sub)

559562

563+instance HasLink sub => HasLink (WithResource res :> sub) where

564+ type MkLink (WithResource res :> sub) a = MkLink sub a

565+ toLink toA _ = toLink toA (Proxy :: Proxy sub)

566+

560567instance HasLink sub => HasLink (RemoteHost :> sub) where

561568 type MkLink (RemoteHost :> sub) a = MkLink sub a

562569 toLink = simpleToLink (Proxy :: Proxy sub)

@@ -582,6 +589,10 @@ instance HasLink Raw where

582589 type MkLink Raw a = a

583590 toLink toA _ = toA

584591

592+instance HasLink RawM where

593+ type MkLink RawM a = a

594+ toLink toA _ = toA

595+

585596instance HasLink (Stream m status fr ct a) where

586597 type MkLink (Stream m status fr ct a) r = r

587598 toLink toA _ = toA

@@ -649,12 +660,20 @@ simpleToLink _ toA _ = toLink toA (Proxy :: Proxy sub)

649660-- >>> import Data.Text (Text)

650661

651662-- Erroring instance for 'HasLink' when a combinator is not fully applied

652−instance TypeError (PartialApplication @(Type -> Constraint) HasLink arr) => HasLink ((arr :: a -> b) :> sub)

663+instance TypeError (PartialApplication

664+#if __GLASGOW_HASKELL__ >= 904

665+ @(Type -> Constraint)

666+#endif

667+ HasLink arr) => HasLink ((arr :: a -> b) :> sub)

653668 where

654669 type MkLink (arr :> sub) _ = TypeError (PartialApplication (HasLink :: * -> Constraint) arr)

655670 toLink = error "unreachable"

656671

657672-- Erroring instances for 'HasLink' for unknown API combinators

658−instance {-# OVERLAPPABLE #-} TypeError (NoInstanceForSub @(Type -> Constraint) HasLink ty) => HasLink (ty :> sub)

673+instance {-# OVERLAPPABLE #-} TypeError (NoInstanceForSub

674+#if __GLASGOW_HASKELL__ >= 904

675+ @(Type -> Constraint)

676+#endif

677+ HasLink ty) => HasLink (ty :> sub)

659678

660679instance {-# OVERLAPPABLE #-} TypeError (NoInstanceFor (HasLink api)) => HasLink api

servant/src/Servant/Test/ComprehensiveAPI.hs+1

@@ -72,6 +72,7 @@ type ComprehensiveAPIWithoutStreamingOrRaw' endpoint =

7272 :<|> "description" :> Description "foo" :> GET

7373 :<|> "alternative" :> ("left" :> GET :<|> "right" :> GET)

7474 :<|> "fragment" :> Fragment Int :> GET

75+ :<|> "resource" :> WithResource Int :> GET

7576 :<|> endpoint

7677

7778type ComprehensiveAPIWithoutStreamingOrRaw = ComprehensiveAPIWithoutStreamingOrRaw' EmptyEndpoint

servant/src/Servant/Types/SourceT.hs+3

@@ -1,3 +1,4 @@

1+{-# LANGUAGE CPP #-}

12{-# LANGUAGE DeriveFunctor #-}

23{-# LANGUAGE GADTs #-}

34{-# LANGUAGE RankNTypes #-}

@@ -154,8 +155,10 @@ instance (Applicative m, Show1 m, Show a) => Show (StepT m a) where

154155-- | >>> lift [1,2,3] :: StepT [] Int

155156-- Effect [Yield 1 Stop,Yield 2 Stop,Yield 3 Stop]

156157--

158+#if !MIN_VERSION_transformers(0,6,0)

157159instance MonadTrans StepT where

158160 lift = Effect . fmap (`Yield` Stop)

161+#endif

159162

160163instance MFunctor StepT where

161164 hoist f = go where

servant/test/Servant/API/ResponseHeadersSpec.hs+11

@@ -2,10 +2,14 @@

22{-# LANGUAGE OverloadedStrings #-}

33module Servant.API.ResponseHeadersSpec where

44

5+import Data.Proxy

6+import GHC.TypeLits

57import Test.Hspec

68

9+import Servant.API.ContentTypes

710import Servant.API.Header

811import Servant.API.ResponseHeaders

12+import Servant.API.UVerb

913

1014spec :: Spec

1115spec = describe "Servant.API.ResponseHeaders" $ do

@@ -28,3 +32,10 @@ spec = describe "Servant.API.ResponseHeaders" $ do

2832 it "does not add a header" $ do

2933 let val = noHeader 5 :: Headers '[Header "test" Int] Int

3034 getHeaders val `shouldBe` []

35+

36+ describe "HasStatus Headers" $ do

37+

38+ it "gets the status from the underlying value" $ do

39+ natVal (Proxy :: Proxy (StatusOf (Headers '[Header "first" Int] NoContent))) `shouldBe` 204

40+ natVal (Proxy :: Proxy (StatusOf (Headers '[Header "first" Int] (WithStatus 503 ())))) `shouldBe` 503

41+