servant-0.16: A family of combinators for defining webservices APIs

Safe HaskellNone
LanguageHaskell2010

Servant.API

Contents

Synopsis

Combinators

data (path :: k) :> (a :: *) infixr 4 Source #

The contained API (second argument) can be found under ("/" ++ path) (path being the first argument).

Example:

>>> -- GET /hello/world
>>> -- returning a JSON encoded World value
>>> type MyApi = "hello" :> "world" :> Get '[JSON] World
Instances
HasLink sub => HasLink (HttpVersion :> sub :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (HttpVersion :> sub) a :: Type Source #

Methods

toLink :: (Link -> a) -> Proxy (HttpVersion :> sub) -> Link -> MkLink (HttpVersion :> sub) a Source #

HasLink sub => HasLink (Vault :> sub :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (Vault :> sub) a :: Type Source #

Methods

toLink :: (Link -> a) -> Proxy (Vault :> sub) -> Link -> MkLink (Vault :> sub) a Source #

HasLink sub => HasLink (BasicAuth realm a :> sub :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (BasicAuth realm a :> sub) a :: Type Source #

Methods

toLink :: (Link -> a0) -> Proxy (BasicAuth realm a :> sub) -> Link -> MkLink (BasicAuth realm a :> sub) a0 Source #

(ToHttpApiData v, HasLink sub) => HasLink (CaptureAll sym v :> sub :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (CaptureAll sym v :> sub) a :: Type Source #

Methods

toLink :: (Link -> a) -> Proxy (CaptureAll sym v :> sub) -> Link -> MkLink (CaptureAll sym v :> sub) a Source #

(ToHttpApiData v, HasLink sub) => HasLink (Capture' mods sym v :> sub :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (Capture' mods sym v :> sub) a :: Type Source #

Methods

toLink :: (Link -> a) -> Proxy (Capture' mods sym v :> sub) -> Link -> MkLink (Capture' mods sym v :> sub) a Source #

HasLink sub => HasLink (Description s :> sub :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (Description s :> sub) a :: Type Source #

Methods

toLink :: (Link -> a) -> Proxy (Description s :> sub) -> Link -> MkLink (Description s :> sub) a Source #

HasLink sub => HasLink (Summary s :> sub :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (Summary s :> sub) a :: Type Source #

Methods

toLink :: (Link -> a) -> Proxy (Summary s :> sub) -> Link -> MkLink (Summary s :> sub) a Source #

HasLink sub => HasLink (AuthProtect tag :> sub :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (AuthProtect tag :> sub) a :: Type Source #

Methods

toLink :: (Link -> a) -> Proxy (AuthProtect tag :> sub) -> Link -> MkLink (AuthProtect tag :> sub) a Source #

HasLink sub => HasLink (IsSecure :> sub :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (IsSecure :> sub) a :: Type Source #

Methods

toLink :: (Link -> a) -> Proxy (IsSecure :> sub) -> Link -> MkLink (IsSecure :> sub) a Source #

HasLink sub => HasLink (Header' mods sym a :> sub :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (Header' mods sym a :> sub) a :: Type Source #

Methods

toLink :: (Link -> a0) -> Proxy (Header' mods sym a :> sub) -> Link -> MkLink (Header' mods sym a :> sub) a0 Source #

(KnownSymbol sym, HasLink sub) => HasLink (QueryFlag sym :> sub :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (QueryFlag sym :> sub) a :: Type Source #

Methods

toLink :: (Link -> a) -> Proxy (QueryFlag sym :> sub) -> Link -> MkLink (QueryFlag sym :> sub) a Source #

(KnownSymbol sym, ToHttpApiData v, HasLink sub) => HasLink (QueryParams sym v :> sub :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (QueryParams sym v :> sub) a :: Type Source #

Methods

toLink :: (Link -> a) -> Proxy (QueryParams sym v :> sub) -> Link -> MkLink (QueryParams sym v :> sub) a Source #

(KnownSymbol sym, ToHttpApiData v, HasLink sub, SBoolI (FoldRequired mods)) => HasLink (QueryParam' mods sym v :> sub :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (QueryParam' mods sym v :> sub) a :: Type Source #

Methods

toLink :: (Link -> a) -> Proxy (QueryParam' mods sym v :> sub) -> Link -> MkLink (QueryParam' mods sym v :> sub) a Source #

HasLink sub => HasLink (RemoteHost :> sub :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (RemoteHost :> sub) a :: Type Source #

Methods

toLink :: (Link -> a) -> Proxy (RemoteHost :> sub) -> Link -> MkLink (RemoteHost :> sub) a Source #

HasLink sub => HasLink (ReqBody' mods ct a :> sub :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (ReqBody' mods ct a :> sub) a :: Type Source #

Methods

toLink :: (Link -> a0) -> Proxy (ReqBody' mods ct a :> sub) -> Link -> MkLink (ReqBody' mods ct a :> sub) a0 Source #

HasLink sub => HasLink (StreamBody' mods framing ct a :> sub :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (StreamBody' mods framing ct a :> sub) a :: Type Source #

Methods

toLink :: (Link -> a0) -> Proxy (StreamBody' mods framing ct a :> sub) -> Link -> MkLink (StreamBody' mods framing ct a :> sub) a0 Source #

(KnownSymbol sym, HasLink sub) => HasLink (sym :> sub :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (sym :> sub) a :: Type Source #

Methods

toLink :: (Link -> a) -> Proxy (sym :> sub) -> Link -> MkLink (sym :> sub) a Source #

type MkLink (HttpVersion :> sub :: Type) a Source # 
Instance details

Defined in Servant.Links

type MkLink (HttpVersion :> sub :: Type) a = MkLink sub a
type MkLink (Vault :> sub :: Type) a Source # 
Instance details

Defined in Servant.Links

type MkLink (Vault :> sub :: Type) a = MkLink sub a
type MkLink (BasicAuth realm a :> sub :: Type) r Source # 
Instance details

Defined in Servant.Links

type MkLink (BasicAuth realm a :> sub :: Type) r = MkLink sub r
type MkLink (CaptureAll sym v :> sub :: Type) a Source # 
Instance details

Defined in Servant.Links

type MkLink (CaptureAll sym v :> sub :: Type) a = [v] -> MkLink sub a
type MkLink (Capture' mods sym v :> sub :: Type) a Source # 
Instance details

Defined in Servant.Links

type MkLink (Capture' mods sym v :> sub :: Type) a = v -> MkLink sub a
type MkLink (Description s :> sub :: Type) a Source # 
Instance details

Defined in Servant.Links

type MkLink (Description s :> sub :: Type) a = MkLink sub a
type MkLink (Summary s :> sub :: Type) a Source # 
Instance details

Defined in Servant.Links

type MkLink (Summary s :> sub :: Type) a = MkLink sub a
type MkLink (AuthProtect tag :> sub :: Type) a Source # 
Instance details

Defined in Servant.Links

type MkLink (AuthProtect tag :> sub :: Type) a = MkLink sub a
type MkLink (IsSecure :> sub :: Type) a Source # 
Instance details

Defined in Servant.Links

type MkLink (IsSecure :> sub :: Type) a = MkLink sub a
type MkLink (Header' mods sym a :> sub :: Type) r Source # 
Instance details

Defined in Servant.Links

type MkLink (Header' mods sym a :> sub :: Type) r = MkLink sub r
type MkLink (QueryFlag sym :> sub :: Type) a Source # 
Instance details

Defined in Servant.Links

type MkLink (QueryFlag sym :> sub :: Type) a = Bool -> MkLink sub a
type MkLink (QueryParams sym v :> sub :: Type) a Source # 
Instance details

Defined in Servant.Links

type MkLink (QueryParams sym v :> sub :: Type) a = [v] -> MkLink sub a
type MkLink (QueryParam' mods sym v :> sub :: Type) a Source # 
Instance details

Defined in Servant.Links

type MkLink (QueryParam' mods sym v :> sub :: Type) a = If (FoldRequired mods) v (Maybe v) -> MkLink sub a
type MkLink (RemoteHost :> sub :: Type) a Source # 
Instance details

Defined in Servant.Links

type MkLink (RemoteHost :> sub :: Type) a = MkLink sub a
type MkLink (ReqBody' mods ct a :> sub :: Type) r Source # 
Instance details

Defined in Servant.Links

type MkLink (ReqBody' mods ct a :> sub :: Type) r = MkLink sub r
type MkLink (StreamBody' mods framing ct a :> sub :: Type) r Source # 
Instance details

Defined in Servant.Links

type MkLink (StreamBody' mods framing ct a :> sub :: Type) r = MkLink sub r
type MkLink (sym :> sub :: Type) a Source # 
Instance details

Defined in Servant.Links

type MkLink (sym :> sub :: Type) a = MkLink sub a

Type-level combinator for expressing subrouting: :>

data a :<|> b infixr 3 Source #

Union of two APIs, first takes precedence in case of overlap.

Example:

>>> :{
type MyApi = "books" :> Get '[JSON] [Book] -- GET /books
       :<|> "books" :> ReqBody '[JSON] Book :> Post '[JSON] () -- POST /books
:}

Constructors

a :<|> b infixr 3 
Instances
Bitraversable (:<|>) Source # 
Instance details

Defined in Servant.API.Alternative

Methods

bitraverse :: Applicative f => (a -> f c) -> (b -> f d) -> (a :<|> b) -> f (c :<|> d) #

Bifoldable (:<|>) Source # 
Instance details

Defined in Servant.API.Alternative

Methods

bifold :: Monoid m => (m :<|> m) -> m #

bifoldMap :: Monoid m => (a -> m) -> (b -> m) -> (a :<|> b) -> m #

bifoldr :: (a -> c -> c) -> (b -> c -> c) -> c -> (a :<|> b) -> c #

bifoldl :: (c -> a -> c) -> (c -> b -> c) -> c -> (a :<|> b) -> c #

Bifunctor (:<|>) Source # 
Instance details

Defined in Servant.API.Alternative

Methods

bimap :: (a -> b) -> (c -> d) -> (a :<|> c) -> b :<|> d #

first :: (a -> b) -> (a :<|> c) -> b :<|> c #

second :: (b -> c) -> (a :<|> b) -> a :<|> c #

Biapplicative (:<|>) Source # 
Instance details

Defined in Servant.API.Alternative

Methods

bipure :: a -> b -> a :<|> b #

(<<*>>) :: ((a -> b) :<|> (c -> d)) -> (a :<|> c) -> b :<|> d #

biliftA2 :: (a -> b -> c) -> (d -> e -> f) -> (a :<|> d) -> (b :<|> e) -> c :<|> f #

(*>>) :: (a :<|> b) -> (c :<|> d) -> c :<|> d #

(<<*) :: (a :<|> b) -> (c :<|> d) -> a :<|> b #

Functor ((:<|>) a) Source # 
Instance details

Defined in Servant.API.Alternative

Methods

fmap :: (a0 -> b) -> (a :<|> a0) -> a :<|> b #

(<$) :: a0 -> (a :<|> b) -> a :<|> a0 #

Foldable ((:<|>) a) Source # 
Instance details

Defined in Servant.API.Alternative

Methods

fold :: Monoid m => (a :<|> m) -> m #

foldMap :: Monoid m => (a0 -> m) -> (a :<|> a0) -> m #

foldr :: (a0 -> b -> b) -> b -> (a :<|> a0) -> b #

foldr' :: (a0 -> b -> b) -> b -> (a :<|> a0) -> b #

foldl :: (b -> a0 -> b) -> b -> (a :<|> a0) -> b #

foldl' :: (b -> a0 -> b) -> b -> (a :<|> a0) -> b #

foldr1 :: (a0 -> a0 -> a0) -> (a :<|> a0) -> a0 #

foldl1 :: (a0 -> a0 -> a0) -> (a :<|> a0) -> a0 #

toList :: (a :<|> a0) -> [a0] #

null :: (a :<|> a0) -> Bool #

length :: (a :<|> a0) -> Int #

elem :: Eq a0 => a0 -> (a :<|> a0) -> Bool #

maximum :: Ord a0 => (a :<|> a0) -> a0 #

minimum :: Ord a0 => (a :<|> a0) -> a0 #

sum :: Num a0 => (a :<|> a0) -> a0 #

product :: Num a0 => (a :<|> a0) -> a0 #

Traversable ((:<|>) a) Source # 
Instance details

Defined in Servant.API.Alternative

Methods

traverse :: Applicative f => (a0 -> f b) -> (a :<|> a0) -> f (a :<|> b) #

sequenceA :: Applicative f => (a :<|> f a0) -> f (a :<|> a0) #

mapM :: Monad m => (a0 -> m b) -> (a :<|> a0) -> m (a :<|> b) #

sequence :: Monad m => (a :<|> m a0) -> m (a :<|> a0) #

(HasLink a, HasLink b) => HasLink (a :<|> b :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (a :<|> b) a :: Type Source #

Methods

toLink :: (Link -> a0) -> Proxy (a :<|> b) -> Link -> MkLink (a :<|> b) a0 Source #

(Bounded a, Bounded b) => Bounded (a :<|> b) Source # 
Instance details

Defined in Servant.API.Alternative

Methods

minBound :: a :<|> b #

maxBound :: a :<|> b #

(Eq a, Eq b) => Eq (a :<|> b) Source # 
Instance details

Defined in Servant.API.Alternative

Methods

(==) :: (a :<|> b) -> (a :<|> b) -> Bool #

(/=) :: (a :<|> b) -> (a :<|> b) -> Bool #

(Show a, Show b) => Show (a :<|> b) Source # 
Instance details

Defined in Servant.API.Alternative

Methods

showsPrec :: Int -> (a :<|> b) -> ShowS #

show :: (a :<|> b) -> String #

showList :: [a :<|> b] -> ShowS #

(Semigroup a, Semigroup b) => Semigroup (a :<|> b) Source # 
Instance details

Defined in Servant.API.Alternative

Methods

(<>) :: (a :<|> b) -> (a :<|> b) -> a :<|> b #

sconcat :: NonEmpty (a :<|> b) -> a :<|> b #

stimes :: Integral b0 => b0 -> (a :<|> b) -> a :<|> b #

(Monoid a, Monoid b) => Monoid (a :<|> b) Source # 
Instance details

Defined in Servant.API.Alternative

Methods

mempty :: a :<|> b #

mappend :: (a :<|> b) -> (a :<|> b) -> a :<|> b #

mconcat :: [a :<|> b] -> a :<|> b #

type MkLink (a :<|> b :: Type) r Source # 
Instance details

Defined in Servant.Links

type MkLink (a :<|> b :: Type) r = MkLink a r :<|> MkLink b r

Type-level combinator for alternative endpoints: :<|>

data EmptyAPI Source #

An empty API: one which serves nothing. Morally speaking, this should be the unit of :<|>. Implementors of interpretations of API types should treat EmptyAPI as close to the unit as possible.

Constructors

EmptyAPI 
Instances
Bounded EmptyAPI Source # 
Instance details

Defined in Servant.API.Empty

Enum EmptyAPI Source # 
Instance details

Defined in Servant.API.Empty

Eq EmptyAPI Source # 
Instance details

Defined in Servant.API.Empty

Show EmptyAPI Source # 
Instance details

Defined in Servant.API.Empty

HasLink EmptyAPI Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink EmptyAPI a :: Type Source #

Methods

toLink :: (Link -> a) -> Proxy EmptyAPI -> Link -> MkLink EmptyAPI a Source #

type MkLink EmptyAPI a Source # 
Instance details

Defined in Servant.Links

Type-level combinator for an empty API: EmptyAPI

data Strict Source #

Strictly parsed argument. Not wrapped.

Instances
(KnownSymbol h, ToHttpApiData v) => AddHeader h v (Headers (fst ': rest) a) (Headers (Header h v ': (fst ': rest)) a) Source # 
Instance details

Defined in Servant.API.ResponseHeaders

Methods

addOptionalHeader :: ResponseHeader h v -> Headers (fst ': rest) a -> Headers (Header h v ': (fst ': rest)) a

HasResponseHeader h a (Header h a ': rest) Source # 
Instance details

Defined in Servant.API.ResponseHeaders

Methods

hlistLookupHeader :: HList (Header h a ': rest) -> ResponseHeader h a

(KnownSymbol h, GetHeadersFromHList rest, ToHttpApiData v) => GetHeaders' (Header h v ': rest) Source # 
Instance details

Defined in Servant.API.ResponseHeaders

Methods

getHeaders' :: Headers (Header h v ': rest) a -> [Header0]

(FromHttpApiData v, BuildHeadersTo xs, KnownSymbol h) => BuildHeadersTo (Header h v ': xs) Source # 
Instance details

Defined in Servant.API.ResponseHeaders

Methods

buildHeadersTo :: [Header0] -> HList (Header h v ': xs) Source #

data Lenient Source #

Leniently parsed argument, i.e. parsing never fail. Wrapped in Either Text.

data Optional Source #

Optional argument. Wrapped in Maybe.

Instances
(KnownSymbol h, ToHttpApiData v) => AddHeader h v (Headers (fst ': rest) a) (Headers (Header h v ': (fst ': rest)) a) Source # 
Instance details

Defined in Servant.API.ResponseHeaders

Methods

addOptionalHeader :: ResponseHeader h v -> Headers (fst ': rest) a -> Headers (Header h v ': (fst ': rest)) a

HasResponseHeader h a (Header h a ': rest) Source # 
Instance details

Defined in Servant.API.ResponseHeaders

Methods

hlistLookupHeader :: HList (Header h a ': rest) -> ResponseHeader h a

(KnownSymbol h, GetHeadersFromHList rest, ToHttpApiData v) => GetHeaders' (Header h v ': rest) Source # 
Instance details

Defined in Servant.API.ResponseHeaders

Methods

getHeaders' :: Headers (Header h v ': rest) a -> [Header0]

(FromHttpApiData v, BuildHeadersTo xs, KnownSymbol h) => BuildHeadersTo (Header h v ': xs) Source # 
Instance details

Defined in Servant.API.ResponseHeaders

Methods

buildHeadersTo :: [Header0] -> HList (Header h v ': xs) Source #

data Required Source #

Required argument. Not wrapped.

Type-level modifiers for QueryParam, ResponseHeader and ReqBody.

Accessing information from the request

data CaptureAll (sym :: Symbol) (a :: *) Source #

Capture all remaining values from the request path under a certain type a.

Example:

>>> -- GET /src/*
>>> type MyAPI = "src" :> CaptureAll "segments" Text :> Get '[JSON] SourceFile
Instances
(ToHttpApiData v, HasLink sub) => HasLink (CaptureAll sym v :> sub :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (CaptureAll sym v :> sub) a :: Type Source #

Methods

toLink :: (Link -> a) -> Proxy (CaptureAll sym v :> sub) -> Link -> MkLink (CaptureAll sym v :> sub) a Source #

type MkLink (CaptureAll sym v :> sub :: Type) a Source # 
Instance details

Defined in Servant.Links

type MkLink (CaptureAll sym v :> sub :: Type) a = [v] -> MkLink sub a

data Capture' (mods :: [*]) (sym :: Symbol) (a :: *) Source #

Capture which can be modified. For example with Description.

Instances
(ToHttpApiData v, HasLink sub) => HasLink (Capture' mods sym v :> sub :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (Capture' mods sym v :> sub) a :: Type Source #

Methods

toLink :: (Link -> a) -> Proxy (Capture' mods sym v :> sub) -> Link -> MkLink (Capture' mods sym v :> sub) a Source #

type MkLink (Capture' mods sym v :> sub :: Type) a Source # 
Instance details

Defined in Servant.Links

type MkLink (Capture' mods sym v :> sub :: Type) a = v -> MkLink sub a

type Capture = Capture' '[] Source #

Capture a value from the request path under a certain type a.

Example:

>>> -- GET /books/:isbn
>>> type MyApi = "books" :> Capture "isbn" Text :> Get '[JSON] Book

Capturing parts of the url path as parsed values: Capture and CaptureAll

data Header' (mods :: [*]) (sym :: Symbol) a Source #

Instances
(KnownSymbol h, ToHttpApiData v) => AddHeader h v (Headers (fst ': rest) a) (Headers (Header h v ': (fst ': rest)) a) Source # 
Instance details

Defined in Servant.API.ResponseHeaders

Methods

addOptionalHeader :: ResponseHeader h v -> Headers (fst ': rest) a -> Headers (Header h v ': (fst ': rest)) a

HasResponseHeader h a (Header h a ': rest) Source # 
Instance details

Defined in Servant.API.ResponseHeaders

Methods

hlistLookupHeader :: HList (Header h a ': rest) -> ResponseHeader h a

HasLink sub => HasLink (Header' mods sym a :> sub :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (Header' mods sym a :> sub) a :: Type Source #

Methods

toLink :: (Link -> a0) -> Proxy (Header' mods sym a :> sub) -> Link -> MkLink (Header' mods sym a :> sub) a0 Source #

(KnownSymbol h, GetHeadersFromHList rest, ToHttpApiData v) => GetHeaders' (Header h v ': rest) Source # 
Instance details

Defined in Servant.API.ResponseHeaders

Methods

getHeaders' :: Headers (Header h v ': rest) a -> [Header0]

(FromHttpApiData v, BuildHeadersTo xs, KnownSymbol h) => BuildHeadersTo (Header h v ': xs) Source # 
Instance details

Defined in Servant.API.ResponseHeaders

Methods

buildHeadersTo :: [Header0] -> HList (Header h v ': xs) Source #

type MkLink (Header' mods sym a :> sub :: Type) r Source # 
Instance details

Defined in Servant.Links

type MkLink (Header' mods sym a :> sub :: Type) r = MkLink sub r

type Header = Header' '[Optional, Strict] Source #

Extract the given header's value as a value of type a. I.e. header sent by client, parsed by server.

Example:

>>> newtype Referer = Referer Text deriving (Eq, Show)
>>> 
>>> -- GET /view-my-referer
>>> type MyApi = "view-my-referer" :> Header "from" Referer :> Get '[JSON] Referer

Retrieving specific headers from the request

data HttpVersion #

HTTP Version.

Note that the Show instance is intended merely for debugging.

Constructors

HttpVersion 

Fields

Instances
Eq HttpVersion 
Instance details

Defined in Network.HTTP.Types.Version

Ord HttpVersion 
Instance details

Defined in Network.HTTP.Types.Version

Show HttpVersion 
Instance details

Defined in Network.HTTP.Types.Version

HasLink sub => HasLink (HttpVersion :> sub :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (HttpVersion :> sub) a :: Type Source #

Methods

toLink :: (Link -> a) -> Proxy (HttpVersion :> sub) -> Link -> MkLink (HttpVersion :> sub) a Source #

type MkLink (HttpVersion :> sub :: Type) a Source # 
Instance details

Defined in Servant.Links

type MkLink (HttpVersion :> sub :: Type) a = MkLink sub a

Retrieving the HTTP version of the request

data QueryFlag (sym :: Symbol) Source #

Lookup a potentially value-less query string parameter with boolean semantics. If the param sym is there without any value, or if it's there with value "true" or "1", it's interpreted as True. Otherwise, it's interpreted as False.

Example:

>>> -- /books?published
>>> type MyApi = "books" :> QueryFlag "published" :> Get '[JSON] [Book]
Instances
(KnownSymbol sym, HasLink sub) => HasLink (QueryFlag sym :> sub :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (QueryFlag sym :> sub) a :: Type Source #

Methods

toLink :: (Link -> a) -> Proxy (QueryFlag sym :> sub) -> Link -> MkLink (QueryFlag sym :> sub) a Source #

type MkLink (QueryFlag sym :> sub :: Type) a Source # 
Instance details

Defined in Servant.Links

type MkLink (QueryFlag sym :> sub :: Type) a = Bool -> MkLink sub a

data QueryParams (sym :: Symbol) (a :: *) Source #

Lookup the values associated to the sym query string parameter and try to extract it as a value of type [a]. This is typically meant to support query string parameters of the form param[]=val1&param[]=val2 and so on. Note that servant doesn't actually require the []s and will fetch the values just fine with param=val1&param=val2, too.

Example:

>>> -- /books?authors[]=<author1>&authors[]=<author2>&...
>>> type MyApi = "books" :> QueryParams "authors" Text :> Get '[JSON] [Book]
Instances
(KnownSymbol sym, ToHttpApiData v, HasLink sub) => HasLink (QueryParams sym v :> sub :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (QueryParams sym v :> sub) a :: Type Source #

Methods

toLink :: (Link -> a) -> Proxy (QueryParams sym v :> sub) -> Link -> MkLink (QueryParams sym v :> sub) a Source #

type MkLink (QueryParams sym v :> sub :: Type) a Source # 
Instance details

Defined in Servant.Links

type MkLink (QueryParams sym v :> sub :: Type) a = [v] -> MkLink sub a

data QueryParam' (mods :: [*]) (sym :: Symbol) (a :: *) Source #

QueryParam which can be Required, Lenient, or modified otherwise.

Instances
(KnownSymbol sym, ToHttpApiData v, HasLink sub, SBoolI (FoldRequired mods)) => HasLink (QueryParam' mods sym v :> sub :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (QueryParam' mods sym v :> sub) a :: Type Source #

Methods

toLink :: (Link -> a) -> Proxy (QueryParam' mods sym v :> sub) -> Link -> MkLink (QueryParam' mods sym v :> sub) a Source #

type MkLink (QueryParam' mods sym v :> sub :: Type) a Source # 
Instance details

Defined in Servant.Links

type MkLink (QueryParam' mods sym v :> sub :: Type) a = If (FoldRequired mods) v (Maybe v) -> MkLink sub a

type QueryParam = QueryParam' '[Optional, Strict] Source #

Lookup the value associated to the sym query string parameter and try to extract it as a value of type a.

Example:

>>> -- /books?author=<author name>
>>> type MyApi = "books" :> QueryParam "author" Text :> Get '[JSON] [Book]

Retrieving parameters from the query string of the URI: QueryParam

data ReqBody' (mods :: [*]) (contentTypes :: [*]) (a :: *) Source #

Note: ReqBody' is always Required.

Instances
HasLink sub => HasLink (ReqBody' mods ct a :> sub :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (ReqBody' mods ct a :> sub) a :: Type Source #

Methods

toLink :: (Link -> a0) -> Proxy (ReqBody' mods ct a :> sub) -> Link -> MkLink (ReqBody' mods ct a :> sub) a0 Source #

type MkLink (ReqBody' mods ct a :> sub :: Type) r Source # 
Instance details

Defined in Servant.Links

type MkLink (ReqBody' mods ct a :> sub :: Type) r = MkLink sub r

type ReqBody = ReqBody' '[Required, Strict] Source #

Extract the request body as a value of type a.

Example:

>>> -- POST /books
>>> type MyApi = "books" :> ReqBody '[JSON] Book :> Post '[JSON] Book

Accessing the request body as a JSON-encoded type: ReqBody

data RemoteHost Source #

Provides access to the host or IP address from which the HTTP request was sent.

Instances
HasLink sub => HasLink (RemoteHost :> sub :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (RemoteHost :> sub) a :: Type Source #

Methods

toLink :: (Link -> a) -> Proxy (RemoteHost :> sub) -> Link -> MkLink (RemoteHost :> sub) a Source #

type MkLink (RemoteHost :> sub :: Type) a Source # 
Instance details

Defined in Servant.Links

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

Retrieving the IP of the client

data IsSecure Source #

Was this request made over an SSL connection?

Note that this value will not tell you if the client originally made this request over SSL, but rather whether the current connection is SSL. The distinction lies with reverse proxies. In many cases, the client will connect to a load balancer over SSL, but connect to the WAI handler without SSL. In such a case, the handlers would get NotSecure, but from a user perspective, there is a secure connection.

Constructors

Secure

the connection to the server is secure (HTTPS)

NotSecure

the connection to the server is not secure (HTTP)

Instances
Eq IsSecure Source # 
Instance details

Defined in Servant.API.IsSecure

Ord IsSecure Source # 
Instance details

Defined in Servant.API.IsSecure

Read IsSecure Source # 
Instance details

Defined in Servant.API.IsSecure

Show IsSecure Source # 
Instance details

Defined in Servant.API.IsSecure

Generic IsSecure Source # 
Instance details

Defined in Servant.API.IsSecure

Associated Types

type Rep IsSecure :: Type -> Type #

Methods

from :: IsSecure -> Rep IsSecure x #

to :: Rep IsSecure x -> IsSecure #

HasLink sub => HasLink (IsSecure :> sub :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (IsSecure :> sub) a :: Type Source #

Methods

toLink :: (Link -> a) -> Proxy (IsSecure :> sub) -> Link -> MkLink (IsSecure :> sub) a Source #

type Rep IsSecure Source # 
Instance details

Defined in Servant.API.IsSecure

type Rep IsSecure = D1 (MetaData "IsSecure" "Servant.API.IsSecure" "servant-0.16-HRWC90SYBxm43z7ELQbirC" False) (C1 (MetaCons "Secure" PrefixI False) (U1 :: Type -> Type) :+: C1 (MetaCons "NotSecure" PrefixI False) (U1 :: Type -> Type))
type MkLink (IsSecure :> sub :: Type) a Source # 
Instance details

Defined in Servant.Links

type MkLink (IsSecure :> sub :: Type) a = MkLink sub a

Is the request made through HTTPS?

type Vault = Vault RealWorld #

A persistent store for values of arbitrary types.

This variant is the simplest and creates keys in the IO monad. See the module Data.Vault.ST if you want to use it with the ST monad instead.

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

data WithNamedContext (name :: Symbol) (subContext :: [*]) subApi Source #

WithNamedContext names a specific tagged context to use for the combinators in the API. (See also in servant-server, Servant.Server.Context.) For example:

type UseNamedContextAPI = WithNamedContext "myContext" '[String] (
    ReqBody '[JSON] Int :> Get '[JSON] Int)

Both the ReqBody and Get combinators will use the WithNamedContext with type tag "myContext" as their context.

Contexts are only relevant for servant-server.

For more information, see the tutorial.

Instances
HasLink sub => HasLink (WithNamedContext name context sub :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (WithNamedContext name context sub) a :: Type Source #

Methods

toLink :: (Link -> a) -> Proxy (WithNamedContext name context sub) -> Link -> MkLink (WithNamedContext name context sub) a Source #

type MkLink (WithNamedContext name context sub :: Type) a Source # 
Instance details

Defined in Servant.Links

type MkLink (WithNamedContext name context sub :: Type) a = MkLink sub a

Access context entries in combinators in servant-server

Actual endpoints, distinguished by HTTP method

data StdMethod #

HTTP standard method (as defined by RFC 2616, and PATCH which is defined by RFC 5789).

Constructors

GET 
POST 
HEAD 
PUT 
DELETE 
TRACE 
CONNECT 
OPTIONS 
PATCH 
Instances
Bounded StdMethod 
Instance details

Defined in Network.HTTP.Types.Method

Enum StdMethod 
Instance details

Defined in Network.HTTP.Types.Method

Eq StdMethod 
Instance details

Defined in Network.HTTP.Types.Method

Ord StdMethod 
Instance details

Defined in Network.HTTP.Types.Method

Read StdMethod 
Instance details

Defined in Network.HTTP.Types.Method

Show StdMethod 
Instance details

Defined in Network.HTTP.Types.Method

Ix StdMethod 
Instance details

Defined in Network.HTTP.Types.Method

ReflectMethod PATCH Source # 
Instance details

Defined in Servant.API.Verbs

ReflectMethod OPTIONS Source # 
Instance details

Defined in Servant.API.Verbs

ReflectMethod CONNECT Source # 
Instance details

Defined in Servant.API.Verbs

ReflectMethod TRACE Source # 
Instance details

Defined in Servant.API.Verbs

ReflectMethod DELETE Source # 
Instance details

Defined in Servant.API.Verbs

ReflectMethod PUT Source # 
Instance details

Defined in Servant.API.Verbs

ReflectMethod HEAD Source # 
Instance details

Defined in Servant.API.Verbs

ReflectMethod POST Source # 
Instance details

Defined in Servant.API.Verbs

ReflectMethod GET Source # 
Instance details

Defined in Servant.API.Verbs

class ReflectMethod a where Source #

Instances
ReflectMethod PATCH Source # 
Instance details

Defined in Servant.API.Verbs

ReflectMethod OPTIONS Source # 
Instance details

Defined in Servant.API.Verbs

ReflectMethod CONNECT Source # 
Instance details

Defined in Servant.API.Verbs

ReflectMethod TRACE Source # 
Instance details

Defined in Servant.API.Verbs

ReflectMethod DELETE Source # 
Instance details

Defined in Servant.API.Verbs

ReflectMethod PUT Source # 
Instance details

Defined in Servant.API.Verbs

ReflectMethod HEAD Source # 
Instance details

Defined in Servant.API.Verbs

ReflectMethod POST Source # 
Instance details

Defined in Servant.API.Verbs

ReflectMethod GET Source # 
Instance details

Defined in Servant.API.Verbs

type GetPartialContent = Verb GET 206 Source #

GET with 206 status code.

type PostResetContent = Verb POST 205 Source #

POST with 205 status code.

type GetResetContent = Verb GET 205 Source #

GET with 205 status code.

type PutNoContent = Verb PUT 204 Source #

PUT with 204 status code.

type PatchNoContent = Verb PATCH 204 Source #

PATCH with 204 status code.

type DeleteNoContent = Verb DELETE 204 Source #

DELETE with 204 status code.

type PostNoContent = Verb POST 204 Source #

POST with 204 status code.

type GetNoContent = Verb GET 204 Source #

GET with 204 status code.

type PutNonAuthoritative = Verb PUT 203 Source #

PUT with 203 status code.

type PatchNonAuthoritative = Verb PATCH 203 Source #

PATCH with 203 status code.

type DeleteNonAuthoritative = Verb DELETE 203 Source #

DELETE with 203 status code.

type PostNonAuthoritative = Verb POST 203 Source #

POST with 203 status code.

type GetNonAuthoritative = Verb GET 203 Source #

GET with 203 status code.

type PutAccepted = Verb PUT 202 Source #

PUT with 202 status code.

type PatchAccepted = Verb PATCH 202 Source #

PATCH with 202 status code.

type DeleteAccepted = Verb DELETE 202 Source #

DELETE with 202 status code.

type PostAccepted = Verb POST 202 Source #

POST with 202 status code.

type GetAccepted = Verb GET 202 Source #

GET with 202 status code.

type PutCreated = Verb PUT 201 Source #

PUT with 201 status code.

type PostCreated = Verb POST 201 Source #

POST with 201 status code.

type Patch = Verb PATCH 200 Source #

PATCH with 200 status code.

type Delete = Verb DELETE 200 Source #

DELETE with 200 status code.

type Put = Verb PUT 200 Source #

PUT with 200 status code.

type Post = Verb POST 200 Source #

POST with 200 status code.

type Get = Verb GET 200 Source #

GET with 200 status code.

data Verb (method :: k1) (statusCode :: Nat) (contentTypes :: [*]) (a :: *) Source #

Verb is a general type for representing HTTP verbs (a.k.a. methods). For convenience, type synonyms for each verb with a 200 response code are provided, but you are free to define your own:

>>> type Post204 contentTypes a = Verb 'POST 204 contentTypes a
Instances
HasLink (Verb m s ct a :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (Verb m s ct a) a :: Type Source #

Methods

toLink :: (Link -> a0) -> Proxy (Verb m s ct a) -> Link -> MkLink (Verb m s ct a) a0 Source #

Generic (Verb method statusCode contentTypes a) Source # 
Instance details

Defined in Servant.API.Verbs

Associated Types

type Rep (Verb method statusCode contentTypes a) :: Type -> Type #

Methods

from :: Verb method statusCode contentTypes a -> Rep (Verb method statusCode contentTypes a) x #

to :: Rep (Verb method statusCode contentTypes a) x -> Verb method statusCode contentTypes a #

type MkLink (Verb m s ct a :: Type) r Source # 
Instance details

Defined in Servant.Links

type MkLink (Verb m s ct a :: Type) r = r
type Rep (Verb method statusCode contentTypes a) Source # 
Instance details

Defined in Servant.API.Verbs

type Rep (Verb method statusCode contentTypes a) = D1 (MetaData "Verb" "Servant.API.Verbs" "servant-0.16-HRWC90SYBxm43z7ELQbirC" False) (V1 :: Type -> Type)

Streaming endpoints, distinguished by HTTP method

data NetstringFraming Source #

The netstring framing strategy as defined by djb: http://cr.yp.to/proto/netstrings.txt

Any string of 8-bit bytes may be encoded as [len]":"[string]",". Here [string] is the string and [len] is a nonempty sequence of ASCII digits giving the length of [string] in decimal. The ASCII digits are 30 for 0, 31 for 1, and so on up through 39 for 9. Extra zeros at the front of [len] are prohibited: [len] begins with 30 exactly when [string] is empty.

For example, the string "hello world!" is encoded as 32 3a 68 65 6c 6c 6f 20 77 6f 72 6c 64 21 2c, i.e., "12:hello world!,". The empty string is encoded as "0:,".

data NewlineFraming Source #

A simple framing strategy that has no header, and inserts a newline character after each frame. This assumes that it is used with a Content-Type that encodes without newlines (e.g. JSON).

data NoFraming Source #

A framing strategy that does not do any framing at all, it just passes the input data This will be used most of the time with binary data, such as files

Instances
FramingUnrender NoFraming Source #

As NoFraming doesn't have frame separators, we take the chunks as given and try to convert them one by one.

That works well when a is a ByteString.

Instance details

Defined in Servant.API.Stream

FramingRender NoFraming Source # 
Instance details

Defined in Servant.API.Stream

class FramingUnrender strategy where Source #

The FramingUnrender class provides the logic for parsing a framing strategy.

Methods

framingUnrender :: Monad m => Proxy strategy -> (ByteString -> Either String a) -> SourceT m ByteString -> SourceT m a Source #

Instances
FramingUnrender NetstringFraming Source # 
Instance details

Defined in Servant.API.Stream

FramingUnrender NewlineFraming Source # 
Instance details

Defined in Servant.API.Stream

FramingUnrender NoFraming Source #

As NoFraming doesn't have frame separators, we take the chunks as given and try to convert them one by one.

That works well when a is a ByteString.

Instance details

Defined in Servant.API.Stream

class FramingRender strategy where Source #

The FramingRender class provides the logic for emitting a framing strategy. The strategy transforms a SourceT m a into SourceT m ByteString, therefore it can prepend, append and intercalate framing structure around chunks.

Note: as the Monad m is generic, this is pure transformation.

Methods

framingRender :: Monad m => Proxy strategy -> (a -> ByteString) -> SourceT m a -> SourceT m ByteString Source #

class FromSourceIO chunk a | a -> chunk where Source #

FromSourceIO is intended to be implemented for types such as Conduit, Pipe, etc. By implementing this class, all such streaming abstractions can be used directly on the client side for talking to streaming endpoints.

Methods

fromSourceIO :: SourceIO chunk -> a Source #

Instances
MonadIO m => FromSourceIO a (SourceT m a) Source # 
Instance details

Defined in Servant.API.Stream

Methods

fromSourceIO :: SourceIO a -> SourceT m a Source #

class ToSourceIO chunk a | a -> chunk where Source #

ToSourceIO is intended to be implemented for types such as Conduit, Pipe, etc. By implementing this class, all such streaming abstractions can be used directly as endpoints.

Methods

toSourceIO :: a -> SourceIO chunk Source #

Instances
ToSourceIO a [a] Source # 
Instance details

Defined in Servant.API.Stream

Methods

toSourceIO :: [a] -> SourceIO a Source #

ToSourceIO a (NonEmpty a) Source # 
Instance details

Defined in Servant.API.Stream

SourceToSourceIO m => ToSourceIO chunk (SourceT m chunk) Source #

Relax to use auxiliary class, have m

Instance details

Defined in Servant.API.Stream

Methods

toSourceIO :: SourceT m chunk -> SourceIO chunk Source #

type SourceIO = SourceT IO Source #

Stream endpoints may be implemented as producing a SourceIO chunk.

Clients reading from streaming endpoints can be implemented as consuming a SourceIO chunk.

data StreamBody' (mods :: [*]) (framing :: *) (contentType :: *) (a :: *) Source #

Instances
HasLink sub => HasLink (StreamBody' mods framing ct a :> sub :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (StreamBody' mods framing ct a :> sub) a :: Type Source #

Methods

toLink :: (Link -> a0) -> Proxy (StreamBody' mods framing ct a :> sub) -> Link -> MkLink (StreamBody' mods framing ct a :> sub) a0 Source #

Generic (StreamBody' mods framing contentType a) Source # 
Instance details

Defined in Servant.API.Stream

Associated Types

type Rep (StreamBody' mods framing contentType a) :: Type -> Type #

Methods

from :: StreamBody' mods framing contentType a -> Rep (StreamBody' mods framing contentType a) x #

to :: Rep (StreamBody' mods framing contentType a) x -> StreamBody' mods framing contentType a #

type MkLink (StreamBody' mods framing ct a :> sub :: Type) r Source # 
Instance details

Defined in Servant.Links

type MkLink (StreamBody' mods framing ct a :> sub :: Type) r = MkLink sub r
type Rep (StreamBody' mods framing contentType a) Source # 
Instance details

Defined in Servant.API.Stream

type Rep (StreamBody' mods framing contentType a) = D1 (MetaData "StreamBody'" "Servant.API.Stream" "servant-0.16-HRWC90SYBxm43z7ELQbirC" False) (V1 :: Type -> Type)

type StreamBody = StreamBody' '[] Source #

A stream request body.

data Stream (method :: k1) (status :: Nat) (framing :: *) (contentType :: *) (a :: *) Source #

A Stream endpoint for a given method emits a stream of encoded values at a given Content-Type, delimited by a framing strategy. Type synonyms are provided for standard methods.

Instances
HasLink (Stream m status fr ct a :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (Stream m status fr ct a) a :: Type Source #

Methods

toLink :: (Link -> a0) -> Proxy (Stream m status fr ct a) -> Link -> MkLink (Stream m status fr ct a) a0 Source #

Generic (Stream method status framing contentType a) Source # 
Instance details

Defined in Servant.API.Stream

Associated Types

type Rep (Stream method status framing contentType a) :: Type -> Type #

Methods

from :: Stream method status framing contentType a -> Rep (Stream method status framing contentType a) x #

to :: Rep (Stream method status framing contentType a) x -> Stream method status framing contentType a #

type MkLink (Stream m status fr ct a :: Type) r Source # 
Instance details

Defined in Servant.Links

type MkLink (Stream m status fr ct a :: Type) r = r
type Rep (Stream method status framing contentType a) Source # 
Instance details

Defined in Servant.API.Stream

type Rep (Stream method status framing contentType a) = D1 (MetaData "Stream" "Servant.API.Stream" "servant-0.16-HRWC90SYBxm43z7ELQbirC" False) (V1 :: Type -> Type)

Authentication

data BasicAuthData Source #

A simple datatype to hold data required to decorate a request

data BasicAuth (realm :: Symbol) (userData :: *) Source #

Combinator for Basic Access Authentication.

  • IMPORTANT*: Only use Basic Auth over HTTPS! Credentials are not hashed or encrypted. Note also that because the same credentials are sent on every request, Basic Auth is not as secure as some alternatives. Further, the implementation in servant-server does not protect against some types of timing attacks.

In Basic Auth, username and password are base64-encoded and transmitted via the Authorization header. Handshakes are not required, making it relatively efficient.

Instances
HasLink sub => HasLink (BasicAuth realm a :> sub :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (BasicAuth realm a :> sub) a :: Type Source #

Methods

toLink :: (Link -> a0) -> Proxy (BasicAuth realm a :> sub) -> Link -> MkLink (BasicAuth realm a :> sub) a0 Source #

type MkLink (BasicAuth realm a :> sub :: Type) r Source # 
Instance details

Defined in Servant.Links

type MkLink (BasicAuth realm a :> sub :: Type) r = MkLink sub r

Endpoints description

data Description (sym :: Symbol) Source #

Add more verbose description for (part of) API.

Example:

>>> :{
type MyApi = Description
 "This comment is visible in multiple Servant interpretations \
 \and can be really long if necessary. \
 \Haskell multiline support is not perfect \
 \but it's still very readable."
:> Get '[JSON] Book
:}
Instances
HasLink sub => HasLink (Description s :> sub :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (Description s :> sub) a :: Type Source #

Methods

toLink :: (Link -> a) -> Proxy (Description s :> sub) -> Link -> MkLink (Description s :> sub) a Source #

type MkLink (Description s :> sub :: Type) a Source # 
Instance details

Defined in Servant.Links

type MkLink (Description s :> sub :: Type) a = MkLink sub a

data Summary (sym :: Symbol) Source #

Add a short summary for (part of) API.

Example:

>>> type MyApi = Summary "Get book by ISBN." :> "books" :> Capture "isbn" Text :> Get '[JSON] Book
Instances
HasLink sub => HasLink (Summary s :> sub :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (Summary s :> sub) a :: Type Source #

Methods

toLink :: (Link -> a) -> Proxy (Summary s :> sub) -> Link -> MkLink (Summary s :> sub) a Source #

type MkLink (Summary s :> sub :: Type) a Source # 
Instance details

Defined in Servant.Links

type MkLink (Summary s :> sub :: Type) a = MkLink sub a

Content Types

data NoContent Source #

A type for responses without content-body.

Constructors

NoContent 
Instances
Eq NoContent Source # 
Instance details

Defined in Servant.API.ContentTypes

Read NoContent Source # 
Instance details

Defined in Servant.API.ContentTypes

Show NoContent Source # 
Instance details

Defined in Servant.API.ContentTypes

Generic NoContent Source # 
Instance details

Defined in Servant.API.ContentTypes

Associated Types

type Rep NoContent :: Type -> Type #

NFData NoContent Source # 
Instance details

Defined in Servant.API.ContentTypes

Methods

rnf :: NoContent -> () #

AllMime (ctyp ': (ctyp' ': ctyps)) => AllMimeRender (ctyp ': (ctyp' ': ctyps)) NoContent Source # 
Instance details

Defined in Servant.API.ContentTypes

Methods

allMimeRender :: Proxy (ctyp ': (ctyp' ': ctyps)) -> NoContent -> [(MediaType, ByteString)] Source #

Accept ctyp => AllMimeRender (ctyp ': ([] :: [Type])) NoContent Source # 
Instance details

Defined in Servant.API.ContentTypes

Methods

allMimeRender :: Proxy (ctyp ': []) -> NoContent -> [(MediaType, ByteString)] Source #

type Rep NoContent Source # 
Instance details

Defined in Servant.API.ContentTypes

type Rep NoContent = D1 (MetaData "NoContent" "Servant.API.ContentTypes" "servant-0.16-HRWC90SYBxm43z7ELQbirC" False) (C1 (MetaCons "NoContent" PrefixI False) (U1 :: Type -> Type))

class Accept ctype => MimeUnrender ctype a where Source #

Instantiate this class to register a way of deserializing a type based on the request's Content-Type header.

>>> import Network.HTTP.Media hiding (Accept)
>>> import qualified Data.ByteString.Lazy.Char8 as BSC
>>> data MyContentType = MyContentType String
>>> :{
instance Accept MyContentType where
   contentType _ = "example" // "prs.me.mine" /: ("charset", "utf-8")
:}
>>> :{
instance Read a => MimeUnrender MyContentType a where
   mimeUnrender _ bs = case BSC.take 12 bs of
     "MyContentType" -> return . read . BSC.unpack $ BSC.drop 12 bs
     _ -> Left "didn't start with the magic incantation"
:}
>>> type MyAPI = "path" :> ReqBody '[MyContentType] Int :> Get '[JSON] Int

Minimal complete definition

mimeUnrender | mimeUnrenderWithType

Methods

mimeUnrender :: Proxy ctype -> ByteString -> Either String a Source #

mimeUnrenderWithType :: Proxy ctype -> MediaType -> ByteString -> Either String a Source #

Variant which is given the actual MediaType provided by the other party.

In the most cases you don't want to branch based on the MediaType. See pr552 for a motivating example.

Instances
MimeUnrender OctetStream ByteString Source #
Right . toStrict
Instance details

Defined in Servant.API.ContentTypes

MimeUnrender OctetStream ByteString Source #
Right . id
Instance details

Defined in Servant.API.ContentTypes

FromForm a => MimeUnrender FormUrlEncoded a Source #

urlDecodeAsForm Note that the mimeUnrender p (mimeRender p x) == Right x law only holds if every element of x is non-null (i.e., not ("", ""))

Instance details

Defined in Servant.API.ContentTypes

MimeUnrender PlainText String Source #
Right . BC.unpack
Instance details

Defined in Servant.API.ContentTypes

MimeUnrender PlainText Text Source #
left show . TextS.decodeUtf8' . toStrict
Instance details

Defined in Servant.API.ContentTypes

MimeUnrender PlainText Text Source #
left show . TextL.decodeUtf8'
Instance details

Defined in Servant.API.ContentTypes

FromJSON a => MimeUnrender JSON a Source #

eitherDecode

Instance details

Defined in Servant.API.ContentTypes

class Accept ctype => MimeRender ctype a where Source #

Instantiate this class to register a way of serializing a type based on the Accept header.

Example:

data MyContentType

instance Accept MyContentType where
   contentType _ = "example" // "prs.me.mine" /: ("charset", "utf-8")

instance Show a => MimeRender MyContentType a where
   mimeRender _ val = pack ("This is MINE! " ++ show val)

type MyAPI = "path" :> Get '[MyContentType] Int

Methods

mimeRender :: Proxy ctype -> a -> ByteString Source #

Instances
MimeRender OctetStream ByteString Source #

fromStrict

Instance details

Defined in Servant.API.ContentTypes

MimeRender OctetStream ByteString Source #
id
Instance details

Defined in Servant.API.ContentTypes

ToForm a => MimeRender FormUrlEncoded a Source #

urlEncodeAsForm Note that the mimeUnrender p (mimeRender p x) == Right x law only holds if every element of x is non-null (i.e., not ("", ""))

Instance details

Defined in Servant.API.ContentTypes

MimeRender PlainText String Source #
BC.pack
Instance details

Defined in Servant.API.ContentTypes

MimeRender PlainText Text Source #
fromStrict . TextS.encodeUtf8
Instance details

Defined in Servant.API.ContentTypes

MimeRender PlainText Text Source #

encodeUtf8

Instance details

Defined in Servant.API.ContentTypes

ToJSON a => MimeRender JSON a Source #

encode

Instance details

Defined in Servant.API.ContentTypes

class Accept ctype where Source #

Instances of Accept represent mimetypes. They are used for matching against the Accept HTTP header of the request, and for setting the Content-Type header of the response

Example:

>>> import Network.HTTP.Media ((//), (/:))
>>> data HTML
>>> :{
instance Accept HTML where
   contentType _ = "text" // "html" /: ("charset", "utf-8")
:}

Minimal complete definition

contentType | contentTypes

data FormUrlEncoded Source #

Instances
Accept FormUrlEncoded Source #
application/x-www-form-urlencoded
Instance details

Defined in Servant.API.ContentTypes

FromForm a => MimeUnrender FormUrlEncoded a Source #

urlDecodeAsForm Note that the mimeUnrender p (mimeRender p x) == Right x law only holds if every element of x is non-null (i.e., not ("", ""))

Instance details

Defined in Servant.API.ContentTypes

ToForm a => MimeRender FormUrlEncoded a Source #

urlEncodeAsForm Note that the mimeUnrender p (mimeRender p x) == Right x law only holds if every element of x is non-null (i.e., not ("", ""))

Instance details

Defined in Servant.API.ContentTypes

data PlainText Source #

Instances
Accept PlainText Source #
text/plain;charset=utf-8
Instance details

Defined in Servant.API.ContentTypes

MimeUnrender PlainText String Source #
Right . BC.unpack
Instance details

Defined in Servant.API.ContentTypes

MimeUnrender PlainText Text Source #
left show . TextS.decodeUtf8' . toStrict
Instance details

Defined in Servant.API.ContentTypes

MimeUnrender PlainText Text Source #
left show . TextL.decodeUtf8'
Instance details

Defined in Servant.API.ContentTypes

MimeRender PlainText String Source #
BC.pack
Instance details

Defined in Servant.API.ContentTypes

MimeRender PlainText Text Source #
fromStrict . TextS.encodeUtf8
Instance details

Defined in Servant.API.ContentTypes

MimeRender PlainText Text Source #

encodeUtf8

Instance details

Defined in Servant.API.ContentTypes

Serializing and deserializing types based on Accept and Content-Type headers.

Response Headers

class HasResponseHeader h a headers Source #

Minimal complete definition

hlistLookupHeader

Instances
HasResponseHeader h a rest => HasResponseHeader h a (first ': rest) Source # 
Instance details

Defined in Servant.API.ResponseHeaders

Methods

hlistLookupHeader :: HList (first ': rest) -> ResponseHeader h a

HasResponseHeader h a (Header h a ': rest) Source # 
Instance details

Defined in Servant.API.ResponseHeaders

Methods

hlistLookupHeader :: HList (Header h a ': rest) -> ResponseHeader h a

class AddHeader h v orig new | h v orig -> new, new -> h, new -> v, new -> orig Source #

Minimal complete definition

addOptionalHeader

Instances
(KnownSymbol h, ToHttpApiData v, new ~ Headers (Header h v ': ([] :: [Type])) a) => AddHeader h v a new Source # 
Instance details

Defined in Servant.API.ResponseHeaders

Methods

addOptionalHeader :: ResponseHeader h v -> a -> new

(KnownSymbol h, ToHttpApiData v) => AddHeader h v (Headers (fst ': rest) a) (Headers (Header h v ': (fst ': rest)) a) Source # 
Instance details

Defined in Servant.API.ResponseHeaders

Methods

addOptionalHeader :: ResponseHeader h v -> Headers (fst ': rest) a -> Headers (Header h v ': (fst ': rest)) a

class GetHeaders ls where Source #

Methods

getHeaders :: ls -> [Header] Source #

Instances
GetHeadersFromHList hs => GetHeaders (HList hs) Source # 
Instance details

Defined in Servant.API.ResponseHeaders

Methods

getHeaders :: HList hs -> [Header] Source #

GetHeaders' hs => GetHeaders (Headers hs a) Source # 
Instance details

Defined in Servant.API.ResponseHeaders

Methods

getHeaders :: Headers hs a -> [Header] Source #

class BuildHeadersTo hs where Source #

Methods

buildHeadersTo :: [Header] -> HList hs Source #

Note: if there are multiple occurences of a header in the argument, the values are interspersed with commas before deserialization (see RFC2616 Sec 4.2)

Instances
BuildHeadersTo ([] :: [Type]) Source # 
Instance details

Defined in Servant.API.ResponseHeaders

Methods

buildHeadersTo :: [Header] -> HList [] Source #

(FromHttpApiData v, BuildHeadersTo xs, KnownSymbol h) => BuildHeadersTo (Header h v ': xs) Source # 
Instance details

Defined in Servant.API.ResponseHeaders

Methods

buildHeadersTo :: [Header0] -> HList (Header h v ': xs) Source #

data HList a where Source #

Constructors

HNil :: HList '[] 
HCons :: ResponseHeader h x -> HList xs -> HList (Header h x ': xs) 
Instances
NFDataHList xs => NFData (HList xs) Source # 
Instance details

Defined in Servant.API.ResponseHeaders

Methods

rnf :: HList xs -> () #

GetHeadersFromHList hs => GetHeaders (HList hs) Source # 
Instance details

Defined in Servant.API.ResponseHeaders

Methods

getHeaders :: HList hs -> [Header] Source #

data ResponseHeader (sym :: Symbol) a Source #

Instances
Functor (ResponseHeader sym) Source # 
Instance details

Defined in Servant.API.ResponseHeaders

Methods

fmap :: (a -> b) -> ResponseHeader sym a -> ResponseHeader sym b #

(<$) :: a -> ResponseHeader sym b -> ResponseHeader sym a #

Eq a => Eq (ResponseHeader sym a) Source # 
Instance details

Defined in Servant.API.ResponseHeaders

Methods

(==) :: ResponseHeader sym a -> ResponseHeader sym a -> Bool #

(/=) :: ResponseHeader sym a -> ResponseHeader sym a -> Bool #

Show a => Show (ResponseHeader sym a) Source # 
Instance details

Defined in Servant.API.ResponseHeaders

Methods

showsPrec :: Int -> ResponseHeader sym a -> ShowS #

show :: ResponseHeader sym a -> String #

showList :: [ResponseHeader sym a] -> ShowS #

NFData a => NFData (ResponseHeader sym a) Source # 
Instance details

Defined in Servant.API.ResponseHeaders

Methods

rnf :: ResponseHeader sym a -> () #

data Headers ls a Source #

Response Header objects. You should never need to construct one directly. Instead, use addOptionalHeader.

Constructors

Headers 

Fields

Instances
(KnownSymbol h, ToHttpApiData v) => AddHeader h v (Headers (fst ': rest) a) (Headers (Header h v ': (fst ': rest)) a) Source # 
Instance details

Defined in Servant.API.ResponseHeaders

Methods

addOptionalHeader :: ResponseHeader h v -> Headers (fst ': rest) a -> Headers (Header h v ': (fst ': rest)) a

Functor (Headers ls) Source # 
Instance details

Defined in Servant.API.ResponseHeaders

Methods

fmap :: (a -> b) -> Headers ls a -> Headers ls b #

(<$) :: a -> Headers ls b -> Headers ls a #

(NFDataHList ls, NFData a) => NFData (Headers ls a) Source # 
Instance details

Defined in Servant.API.ResponseHeaders

Methods

rnf :: Headers ls a -> () #

GetHeaders' hs => GetHeaders (Headers hs a) Source # 
Instance details

Defined in Servant.API.ResponseHeaders

Methods

getHeaders :: Headers hs a -> [Header] Source #

addHeader :: AddHeader h v orig new => v -> orig -> new Source #

addHeader adds a header to a response. Note that it changes the type of the value in the following ways:

  1. A simple value is wrapped in "Headers '[hdr]":
>>> let example1 = addHeader 5 "hi" :: Headers '[Header "someheader" Int] String;
>>> getHeaders example1
[("someheader","5")]
  1. A value that already has a header has its new header *prepended* to the existing list:
>>> let example1 = addHeader 5 "hi" :: Headers '[Header "someheader" Int] String;
>>> let example2 = addHeader True example1 :: Headers '[Header "1st" Bool, Header "someheader" Int] String
>>> getHeaders example2
[("1st","true"),("someheader","5")]

Note that while in your handlers type annotations are not required, since the type can be inferred from the API type, in other cases you may find yourself needing to add annotations.

noHeader :: AddHeader h v orig new => orig -> new Source #

Deliberately do not add a header to a value.

>>> let example1 = noHeader "hi" :: Headers '[Header "someheader" Int] String
>>> getHeaders example1
[]

lookupResponseHeader :: HasResponseHeader h a headers => Headers headers r -> ResponseHeader h a Source #

Look up a specific ResponseHeader, without having to know what position it is in the HList.

>>> let example1 = addHeader 5 "hi" :: Headers '[Header "someheader" Int] String
>>> let example2 = addHeader True example1 :: Headers '[Header "1st" Bool, Header "someheader" Int] String
>>> lookupResponseHeader example2 :: ResponseHeader "someheader" Int
Header 5
>>> lookupResponseHeader example2 :: ResponseHeader "1st" Bool
Header True

Usage of this function relies on an explicit type annotation of the header to be looked up. This can be done with type annotations on the result, or with an explicit type application. In this example, the type of header value is determined by the type-inference, we only specify the name of the header:

>>> :set -XTypeApplications
>>> case lookupResponseHeader @"1st" example2 of { Header b -> b ; _ -> False }
True

Since: 0.15

Untyped endpoints

data Raw Source #

Endpoint for plugging in your own Wai Applications.

The given Application will get the request as received by the server, potentially with a modified (stripped) pathInfo if the Application is being routed with :>.

In addition to just letting you plug in your existing WAI Applications, this can also be used with serveDirectory to serve static files stored in a particular directory on your filesystem

Instances
HasLink Raw Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink Raw a :: Type Source #

Methods

toLink :: (Link -> a) -> Proxy Raw -> Link -> MkLink Raw a Source #

type MkLink Raw a Source # 
Instance details

Defined in Servant.Links

type MkLink Raw a = a

Plugging in a wai Application, serving directories

FromHttpApiData and ToHttpApiData

class ToHttpApiData a where #

Convert value to HTTP API data.

WARNING: Do not derive this using DeriveAnyClass as the generated instance will loop indefinitely.

Minimal complete definition

toUrlPiece | toQueryParam

Methods

toUrlPiece :: a -> Text #

Convert to URL path piece.

toEncodedUrlPiece :: a -> Builder #

Convert to a URL path piece, making sure to encode any special chars. The default definition uses encodePathSegmentsRelative, but this may be overriden with a more efficient version.

toHeader :: a -> ByteString #

Convert to HTTP header value.

toQueryParam :: a -> Text #

Convert to query param value.

Instances
ToHttpApiData Bool 
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData Char 
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData Double 
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData Float 
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData Int 
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData Int8 
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData Int16 
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData Int32 
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData Int64 
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData Integer 
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData Natural 
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData Ordering 
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData Word 
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData Word8 
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData Word16 
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData Word32 
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData Word64 
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData ()
>>> toUrlPiece ()
"_"
Instance details

Defined in Web.Internal.HttpApiData

Methods

toUrlPiece :: () -> Text #

toEncodedUrlPiece :: () -> Builder #

toHeader :: () -> ByteString #

toQueryParam :: () -> Text #

ToHttpApiData String 
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData Version
>>> toUrlPiece (Version [1, 2, 3] [])
"1.2.3"
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData Text 
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData UTCTime
>>> toUrlPiece $ UTCTime (fromGregorian 2015 10 03) 864.5
"2015-10-03T00:14:24.5Z"
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData Text 
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData Void 
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData All 
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData Any 
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData SetCookie

Note: this instance works correctly for alphanumeric name and value

>>> let Right c = parseUrlPiece "SESSID=r2t5uvjq435r4q7ib3vtdjq120" :: Either Text SetCookie
>>> toUrlPiece c
"SESSID=r2t5uvjq435r4q7ib3vtdjq120"
>>> toHeader c
"SESSID=r2t5uvjq435r4q7ib3vtdjq120"
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData ZonedTime
>>> toUrlPiece $ ZonedTime (LocalTime (fromGregorian 2015 10 03) (TimeOfDay 14 55 51.001)) utc
"2015-10-03T14:55:51.001+0000"
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData LocalTime
>>> toUrlPiece $ LocalTime (fromGregorian 2015 10 03) (TimeOfDay 14 55 21.687)
"2015-10-03T14:55:21.687"
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData TimeOfDay
>>> toUrlPiece $ TimeOfDay 14 55 23.1
"14:55:23.1"
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData NominalDiffTime 
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData Day
>>> toUrlPiece (fromGregorian 2015 10 03)
"2015-10-03"
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData UUID 
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData Link Source # 
Instance details

Defined in Servant.Links

ToHttpApiData a => ToHttpApiData (Maybe a)
>>> toUrlPiece (Just "Hello")
"just Hello"
Instance details

Defined in Web.Internal.HttpApiData

HasResolution a => ToHttpApiData (Fixed a) 
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData a => ToHttpApiData (Min a) 
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData a => ToHttpApiData (Max a) 
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData a => ToHttpApiData (First a) 
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData a => ToHttpApiData (Last a) 
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData a => ToHttpApiData (First a) 
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData a => ToHttpApiData (Last a) 
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData a => ToHttpApiData (Dual a) 
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData a => ToHttpApiData (Sum a) 
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData a => ToHttpApiData (Product a) 
Instance details

Defined in Web.Internal.HttpApiData

(ToHttpApiData a, ToHttpApiData b) => ToHttpApiData (Either a b)
>>> toUrlPiece (Left "err" :: Either String Int)
"left err"
>>> toUrlPiece (Right 3 :: Either String Int)
"right 3"
Instance details

Defined in Web.Internal.HttpApiData

ToHttpApiData a => ToHttpApiData (Tagged b a) 
Instance details

Defined in Web.Internal.HttpApiData

class FromHttpApiData a where #

Parse value from HTTP API data.

WARNING: Do not derive this using DeriveAnyClass as the generated instance will loop indefinitely.

Minimal complete definition

parseUrlPiece | parseQueryParam

Methods

parseUrlPiece :: Text -> Either Text a #

Parse URL path piece.

parseHeader :: ByteString -> Either Text a #

Parse HTTP header value.

parseQueryParam :: Text -> Either Text a #

Parse query param value.

Instances
FromHttpApiData Bool 
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData Char 
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData Double 
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData Float 
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData Int 
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData Int8 
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData Int16 
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData Int32 
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData Int64 
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData Integer 
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData Natural 
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData Ordering 
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData Word 
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData Word8 
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData Word16 
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData Word32 
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData Word64 
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData ()
>>> parseUrlPiece "_" :: Either Text ()
Right ()
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData String 
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData Version
>>> showVersion <$> parseUrlPiece "1.2.3"
Right "1.2.3"
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData Text 
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData UTCTime
>>> parseUrlPiece "2015-10-03T00:14:24Z" :: Either Text UTCTime
Right 2015-10-03 00:14:24 UTC
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData Text 
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData Void

Parsing a Void value is always an error, considering Void as a data type with no constructors.

Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData All 
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData Any 
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData SetCookie

Note: this instance works correctly for alphanumeric name and value

>>> parseUrlPiece "SESSID=r2t5uvjq435r4q7ib3vtdjq120" :: Either Text SetCookie
Right (SetCookie {setCookieName = "SESSID", setCookieValue = "r2t5uvjq435r4q7ib3vtdjq120", setCookiePath = Nothing, setCookieExpires = Nothing, setCookieMaxAge = Nothing, setCookieDomain = Nothing, setCookieHttpOnly = False, setCookieSecure = False, setCookieSameSite = Nothing})
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData ZonedTime
>>> parseUrlPiece "2015-10-03T14:55:01+0000" :: Either Text ZonedTime
Right 2015-10-03 14:55:01 +0000
>>> parseQueryParam "2016-12-31T01:00:00Z" :: Either Text ZonedTime
Right 2016-12-31 01:00:00 +0000
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData LocalTime
>>> parseUrlPiece "2015-10-03T14:55:01" :: Either Text LocalTime
Right 2015-10-03 14:55:01
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData TimeOfDay
>>> parseUrlPiece "14:55:01.333" :: Either Text TimeOfDay
Right 14:55:01.333
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData NominalDiffTime 
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData Day
>>> toGregorian <$> parseUrlPiece "2016-12-01"
Right (2016,12,1)
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData UUID 
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData a => FromHttpApiData (Maybe a)
>>> parseUrlPiece "Just 123" :: Either Text (Maybe Int)
Right (Just 123)
Instance details

Defined in Web.Internal.HttpApiData

HasResolution a => FromHttpApiData (Fixed a) 
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData a => FromHttpApiData (Min a) 
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData a => FromHttpApiData (Max a) 
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData a => FromHttpApiData (First a) 
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData a => FromHttpApiData (Last a) 
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData a => FromHttpApiData (First a) 
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData a => FromHttpApiData (Last a) 
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData a => FromHttpApiData (Dual a) 
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData a => FromHttpApiData (Sum a) 
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData a => FromHttpApiData (Product a) 
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData a => FromHttpApiData (LenientData a) 
Instance details

Defined in Web.Internal.HttpApiData

(FromHttpApiData a, FromHttpApiData b) => FromHttpApiData (Either a b)
>>> parseUrlPiece "Right 123" :: Either Text (Either String Int)
Right (Right 123)
Instance details

Defined in Web.Internal.HttpApiData

FromHttpApiData a => FromHttpApiData (Tagged b a) 
Instance details

Defined in Web.Internal.HttpApiData

Classes and instances for types that can be converted to and from HTTP API data.

Experimental modules

data AuthProtect (tag :: k) Source #

A generalized Authentication combinator. Use this if you have a non-standard authentication technique.

NOTE: THIS API IS EXPERIMENTAL AND SUBJECT TO CHANGE.

Instances
HasLink sub => HasLink (AuthProtect tag :> sub :: Type) Source # 
Instance details

Defined in Servant.Links

Associated Types

type MkLink (AuthProtect tag :> sub) a :: Type Source #

Methods

toLink :: (Link -> a) -> Proxy (AuthProtect tag :> sub) -> Link -> MkLink (AuthProtect tag :> sub) a Source #

type MkLink (AuthProtect tag :> sub :: Type) a Source # 
Instance details

Defined in Servant.Links

type MkLink (AuthProtect tag :> sub :: Type) a = MkLink sub a

General Authentication

Links

data URI #

Represents a general universal resource identifier using its component parts.

For example, for the URI

  foo://anonymous@www.haskell.org:42/ghc?query#frag

the components are:

Constructors

URI 

Fields

Instances
Eq URI 
Instance details

Defined in Network.URI

Methods

(==) :: URI -> URI -> Bool #

(/=) :: URI -> URI -> Bool #

Data URI 
Instance details

Defined in Network.URI

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> URI -> c URI #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c URI #

toConstr :: URI -> Constr #

dataTypeOf :: URI -> DataType #

dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c URI) #

dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c URI) #

gmapT :: (forall b. Data b => b -> b) -> URI -> URI #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> URI -> r #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> URI -> r #

gmapQ :: (forall d. Data d => d -> u) -> URI -> [u] #

gmapQi :: Int -> (forall d. Data d => d -> u) -> URI -> u #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> URI -> m URI #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> URI -> m URI #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> URI -> m URI #

Ord URI 
Instance details

Defined in Network.URI

Methods

compare :: URI -> URI -> Ordering #

(<) :: URI -> URI -> Bool #

(<=) :: URI -> URI -> Bool #

(>) :: URI -> URI -> Bool #

(>=) :: URI -> URI -> Bool #

max :: URI -> URI -> URI #

min :: URI -> URI -> URI #

Show URI 
Instance details

Defined in Network.URI

Methods

showsPrec :: Int -> URI -> ShowS #

show :: URI -> String #

showList :: [URI] -> ShowS #

Generic URI 
Instance details

Defined in Network.URI

Associated Types

type Rep URI :: Type -> Type #

Methods

from :: URI -> Rep URI x #

to :: Rep URI x -> URI #

NFData URI 
Instance details

Defined in Network.URI

Methods

rnf :: URI -> () #

type Rep URI 
Instance details

Defined in Network.URI

type family IsElem endpoint api :: Constraint where ... Source #

Closed type family, check if endpoint is within api. Uses IsElem' if it exhausts all other options.

>>> ok (Proxy :: Proxy (IsElem ("hello" :> Get '[JSON] Int) SampleAPI))
OK
>>> ok (Proxy :: Proxy (IsElem ("bye" :> Get '[JSON] Int) SampleAPI))
...
... Could not deduce...
...

An endpoint is considered within an api even if it is missing combinators that don't affect the URL:

>>> ok (Proxy :: Proxy (IsElem (Get '[JSON] Int) (Header "h" Bool :> Get '[JSON] Int)))
OK
>>> ok (Proxy :: Proxy (IsElem (Get '[JSON] Int) (ReqBody '[JSON] Bool :> Get '[JSON] Int)))
OK
  • N.B.:* IsElem a b can be seen as capturing the notion of whether the URL represented by a would match the URL represented by b, *not* whether a request represented by a matches the endpoints serving b (for the latter, use IsIn).

Equations

IsElem e (sa :<|> sb) = Or (IsElem e sa) (IsElem e sb) 
IsElem (e :> sa) (e :> sb) = IsElem sa sb 
IsElem sa (Header sym x :> sb) = IsElem sa sb 
IsElem sa (ReqBody y x :> sb) = IsElem sa sb 
IsElem (CaptureAll z y :> sa) (CaptureAll x y :> sb) = IsElem sa sb 
IsElem (Capture z y :> sa) (Capture x y :> sb) = IsElem sa sb 
IsElem sa (QueryParam x y :> sb) = IsElem sa sb 
IsElem sa (QueryParams x y :> sb) = IsElem sa sb 
IsElem sa (QueryFlag x :> sb) = IsElem sa sb 
IsElem (Verb m s ct typ) (Verb m s ct' typ) = IsSubList ct ct' 
IsElem e e = () 
IsElem e a = IsElem' e a 

type family IsElem' a s :: Constraint Source #

You may use this type family to tell the type checker that your custom type may be skipped as part of a link. This is useful for things like QueryParam that are optional in a URI and do not affect them if they are omitted.

>>> data CustomThing
>>> type instance IsElem' e (CustomThing :> s) = IsElem e s

Note that IsElem is called, which will mutually recurse back to IsElem' if it exhausts all other options again.

Once you have written a HasLink instance for CustomThing you are ready to go.

class HasLink endpoint where Source #

Construct a toLink for an endpoint.

Associated Types

type MkLink endpoint (a :: *) Source #

Methods

toLink Source #

Arguments

:: (Link -> a) 
-> Proxy endpoint

The API endpoint you would like to point to

-> Link 
-> MkLink endpoint a 

data Link Source #

A safe link datatype. The only way of constructing a Link is using safeLink, which means any Link is guaranteed to be part of the mentioned API.

safeLink Source #

Arguments

:: (IsElem endpoint api, HasLink endpoint) 
=> Proxy api

The whole API that this endpoint is a part of

-> Proxy endpoint

The API endpoint you would like to point to

-> MkLink endpoint Link 

Create a valid (by construction) relative URI with query params.

This function will only typecheck if endpoint is part of the API api

Type-safe internal URIs

Re-exports

type family If (cond :: Bool) (tru :: k) (fls :: k) :: k where ... #

Type-level If. If True a b ==> a; If False a b ==> b

Equations

If True (tru :: k) (fls :: k) = tru 
If False (tru :: k) (fls :: k) = fls 

data SBool (b :: Bool) where #

Constructors

STrue :: forall (b :: Bool). SBool True 
SFalse :: forall (b :: Bool). SBool False 

class SBoolI (b :: Bool) where #

Methods

sbool :: SBool b #

Instances
SBoolI False 
Instance details

Defined in Data.Singletons.Bool

Methods

sbool :: SBool False #

SBoolI True 
Instance details

Defined in Data.Singletons.Bool

Methods

sbool :: SBool True #