Merge branch 'master' into 309-handle-application-exceptions-with-500-errors

This commit is contained in:
Sasa Bogicevic 2018-07-06 00:12:32 +02:00
commit 5b13ff4ba3
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89 changed files with 2404 additions and 1495 deletions

View file

@ -13,7 +13,6 @@ git:
branches:
only:
- master
- release-0.12
cache:
directories:
@ -35,19 +34,19 @@ matrix:
include:
- compiler: "ghc-8.4.3"
# env: TEST=--disable-tests BENCH=--disable-benchmarks
addons: {apt: {packages: [ghc-ppa-tools,ghc-8.4.3], sources: [hvr-ghc]}}
addons: {apt: {packages: [ghc-ppa-tools,cabal-install-2.2,ghc-8.4.3], sources: [hvr-ghc]}}
- compiler: "ghc-8.2.2"
# env: TEST=--disable-tests BENCH=--disable-benchmarks
addons: {apt: {packages: [ghc-ppa-tools,ghc-8.2.2], sources: [hvr-ghc]}}
addons: {apt: {packages: [ghc-ppa-tools,cabal-install-2.2,ghc-8.2.2], sources: [hvr-ghc]}}
- compiler: "ghc-8.0.2"
# env: TEST=--disable-tests BENCH=--disable-benchmarks
addons: {apt: {packages: [ghc-ppa-tools,ghc-8.0.2], sources: [hvr-ghc]}}
addons: {apt: {packages: [ghc-ppa-tools,cabal-install-2.2,ghc-8.0.2], sources: [hvr-ghc]}}
- compiler: "ghc-7.10.3"
# env: TEST=--disable-tests BENCH=--disable-benchmarks
addons: {apt: {packages: [ghc-ppa-tools,ghc-7.10.3], sources: [hvr-ghc]}}
addons: {apt: {packages: [ghc-ppa-tools,cabal-install-2.2,ghc-7.10.3], sources: [hvr-ghc]}}
- compiler: "ghc-7.8.4"
# env: TEST=--disable-tests BENCH=--disable-benchmarks
addons: {apt: {packages: [ghc-ppa-tools,ghc-7.8.4], sources: [hvr-ghc]}}
addons: {apt: {packages: [ghc-ppa-tools,cabal-install-2.2,ghc-7.8.4], sources: [hvr-ghc]}}
before_install:
- HC=${CC}
@ -59,34 +58,27 @@ before_install:
- HCNUMVER=$(( $(${HC} --numeric-version|sed -E 's/([0-9]+)\.([0-9]+)\.([0-9]+).*/\1 * 10000 + \2 * 100 + \3/') ))
- echo $HCNUMVER
# Let's download "better" cabal
- "curl -L http://oleg.fi/cabal-grayjay-buildable-fix.xz | xz -d > $HOME/.local/bin/cabal"
- |
if [ "$(cd $HOME/.local/bin && sha256sum cabal)" != "e281e9466b8eef30ac0d1371e8ea83c9d2e856bda4714a728ac474138b09b20f cabal" ]; then
rm -f $HOME/.local/bin/cabal;
sha256sum $HOME/.local/bin/cabal;
false;
else
chmod a+x $HOME/.local/bin/cabal;
fi
install:
- cabal --version
- echo "$(${HC} --version) [$(${HC} --print-project-git-commit-id 2> /dev/null || echo '?')]"
- BENCH=${BENCH---enable-benchmarks}
- TEST=${TEST---enable-tests}
- HADDOCK=${HADDOCK-true}
- INSTALLED=${INSTALLED-true}
- UNCONSTRAINED=${UNCONSTRAINED-true}
- NOINSTALLEDCONSTRAINTS=${NOINSTALLEDCONSTRAINTS-false}
- GHCHEAD=${GHCHEAD-false}
- travis_retry cabal update -v
- "sed -i.bak 's/^jobs:/-- jobs:/' ${HOME}/.cabal/config"
- rm -fv cabal.project cabal.project.local
- "if [ $HCNUMVER -ge 70800 ]; then sed -i.bak 's/-- ghc-options:.*/ghc-options: -j2/' ${HOME}/.cabal/config; fi"
- grep -Ev -- '^\s*--' ${HOME}/.cabal/config | grep -Ev '^\s*$'
- "printf 'packages: \"servant\" \"servant-client\" \"servant-client-core\" \"servant-docs\" \"servant-foreign\" \"servant-server\" \"doc/tutorial\" \"doc/cookbook/basic-auth\" \"doc/cookbook/db-postgres-pool\" \"doc/cookbook/db-sqlite-simple\" \"doc/cookbook/https\" \"doc/cookbook/pagination\" \"doc/cookbook/structuring-apis\" \"doc/cookbook/using-custom-monad\"\\n' > cabal.project"
- "printf 'packages: \"servant\" \"servant-client\" \"servant-client-core\" \"servant-docs\" \"servant-foreign\" \"servant-server\" \"doc/tutorial\" \"doc/cookbook/basic-auth\" \"doc/cookbook/db-postgres-pool\" \"doc/cookbook/db-sqlite-simple\" \"doc/cookbook/file-upload\" \"doc/cookbook/https\" \"doc/cookbook/jwt-and-basic-auth\" \"doc/cookbook/pagination\" \"doc/cookbook/structuring-apis\" \"doc/cookbook/using-custom-monad\"\\n' > cabal.project"
- "echo 'constraints: foundation >=0.0.14,memory <0.14.12 || >0.14.12' >> cabal.project"
- "echo 'allow-newer: servant-auth-server:http-types,servant-auth-server:servant-server, http-media:base' >> cabal.project"
- cat cabal.project
- "echo 'allow-newer: servant-auth-server:http-types,servant-auth-server:servant-server, servant-pagination:servant,servant-pagination:servant-server' >> cabal.project"
- touch cabal.project.local
- "if ! $NOINSTALLEDCONSTRAINTS; then for pkg in $($HCPKG list --simple-output); do echo $pkg | sed 's/^/constraints: /' | sed 's/-[^-]*$/ installed/' >> cabal.project.local; done; fi"
- cat cabal.project || true
- cat cabal.project.local || true
- if [ -f "servant/configure.ac" ]; then
(cd "servant" && autoreconf -i);
fi
@ -117,9 +109,15 @@ install:
- if [ -f "doc/cookbook/db-sqlite-simple/configure.ac" ]; then
(cd "doc/cookbook/db-sqlite-simple" && autoreconf -i);
fi
- if [ -f "doc/cookbook/file-upload/configure.ac" ]; then
(cd "doc/cookbook/file-upload" && autoreconf -i);
fi
- if [ -f "doc/cookbook/https/configure.ac" ]; then
(cd "doc/cookbook/https" && autoreconf -i);
fi
- if [ -f "doc/cookbook/jwt-and-basic-auth/configure.ac" ]; then
(cd "doc/cookbook/jwt-and-basic-auth" && autoreconf -i);
fi
- if [ -f "doc/cookbook/pagination/configure.ac" ]; then
(cd "doc/cookbook/pagination" && autoreconf -i);
fi
@ -130,7 +128,7 @@ install:
(cd "doc/cookbook/using-custom-monad" && autoreconf -i);
fi
- rm -f cabal.project.freeze
- rm -rf .ghc.environment.* "servant"/dist "servant-client"/dist "servant-client-core"/dist "servant-docs"/dist "servant-foreign"/dist "servant-server"/dist "doc/tutorial"/dist "doc/cookbook/basic-auth"/dist "doc/cookbook/db-postgres-pool"/dist "doc/cookbook/db-sqlite-simple"/dist "doc/cookbook/https"/dist "doc/cookbook/pagination"/dist "doc/cookbook/structuring-apis"/dist "doc/cookbook/using-custom-monad"/dist
- rm -rf .ghc.environment.* "servant"/dist "servant-client"/dist "servant-client-core"/dist "servant-docs"/dist "servant-foreign"/dist "servant-server"/dist "doc/tutorial"/dist "doc/cookbook/basic-auth"/dist "doc/cookbook/db-postgres-pool"/dist "doc/cookbook/db-sqlite-simple"/dist "doc/cookbook/file-upload"/dist "doc/cookbook/https"/dist "doc/cookbook/jwt-and-basic-auth"/dist "doc/cookbook/pagination"/dist "doc/cookbook/structuring-apis"/dist "doc/cookbook/using-custom-monad"/dist
- DISTDIR=$(mktemp -d /tmp/dist-test.XXXX)
# Here starts the actual work to be performed for the package under test;
@ -148,22 +146,26 @@ script:
- (cd "doc/cookbook/basic-auth" && cabal sdist)
- (cd "doc/cookbook/db-postgres-pool" && cabal sdist)
- (cd "doc/cookbook/db-sqlite-simple" && cabal sdist)
- (cd "doc/cookbook/file-upload" && cabal sdist)
- (cd "doc/cookbook/https" && cabal sdist)
- (cd "doc/cookbook/jwt-and-basic-auth" && cabal sdist)
- (cd "doc/cookbook/pagination" && cabal sdist)
- (cd "doc/cookbook/structuring-apis" && cabal sdist)
- (cd "doc/cookbook/using-custom-monad" && cabal sdist)
- echo -en 'travis_fold:end:sdist\\r'
- echo Unpacking... && echo -en 'travis_fold:start:unpack\\r'
- mv "servant"/dist/servant-*.tar.gz "servant-client"/dist/servant-client-*.tar.gz "servant-client-core"/dist/servant-client-core-*.tar.gz "servant-docs"/dist/servant-docs-*.tar.gz "servant-foreign"/dist/servant-foreign-*.tar.gz "servant-server"/dist/servant-server-*.tar.gz "doc/tutorial"/dist/tutorial-*.tar.gz "doc/cookbook/basic-auth"/dist/cookbook-basic-auth-*.tar.gz "doc/cookbook/db-postgres-pool"/dist/cookbook-db-postgres-pool-*.tar.gz "doc/cookbook/db-sqlite-simple"/dist/cookbook-db-sqlite-simple-*.tar.gz "doc/cookbook/https"/dist/cookbook-https-*.tar.gz "doc/cookbook/pagination"/dist/cookbook-pagination-*.tar.gz "doc/cookbook/structuring-apis"/dist/cookbook-structuring-apis-*.tar.gz "doc/cookbook/using-custom-monad"/dist/cookbook-using-custom-monad-*.tar.gz ${DISTDIR}/
- mv "servant"/dist/servant-*.tar.gz "servant-client"/dist/servant-client-*.tar.gz "servant-client-core"/dist/servant-client-core-*.tar.gz "servant-docs"/dist/servant-docs-*.tar.gz "servant-foreign"/dist/servant-foreign-*.tar.gz "servant-server"/dist/servant-server-*.tar.gz "doc/tutorial"/dist/tutorial-*.tar.gz "doc/cookbook/basic-auth"/dist/cookbook-basic-auth-*.tar.gz "doc/cookbook/db-postgres-pool"/dist/cookbook-db-postgres-pool-*.tar.gz "doc/cookbook/db-sqlite-simple"/dist/cookbook-db-sqlite-simple-*.tar.gz "doc/cookbook/file-upload"/dist/cookbook-file-upload-*.tar.gz "doc/cookbook/https"/dist/cookbook-https-*.tar.gz "doc/cookbook/jwt-and-basic-auth"/dist/cookbook-jwt-and-basic-auth-*.tar.gz "doc/cookbook/pagination"/dist/cookbook-pagination-*.tar.gz "doc/cookbook/structuring-apis"/dist/cookbook-structuring-apis-*.tar.gz "doc/cookbook/using-custom-monad"/dist/cookbook-using-custom-monad-*.tar.gz ${DISTDIR}/
- cd ${DISTDIR} || false
- find . -maxdepth 1 -name '*.tar.gz' -exec tar -xvf '{}' \;
- "printf 'packages: servant-*/*.cabal servant-client-*/*.cabal servant-client-core-*/*.cabal servant-docs-*/*.cabal servant-foreign-*/*.cabal servant-server-*/*.cabal tutorial-*/*.cabal cookbook-basic-auth-*/*.cabal cookbook-db-postgres-pool-*/*.cabal cookbook-db-sqlite-simple-*/*.cabal cookbook-https-*/*.cabal cookbook-pagination-*/*.cabal cookbook-structuring-apis-*/*.cabal cookbook-using-custom-monad-*/*.cabal\\n' > cabal.project"
- "printf 'packages: servant-*/*.cabal servant-client-*/*.cabal servant-client-core-*/*.cabal servant-docs-*/*.cabal servant-foreign-*/*.cabal servant-server-*/*.cabal tutorial-*/*.cabal cookbook-basic-auth-*/*.cabal cookbook-db-postgres-pool-*/*.cabal cookbook-db-sqlite-simple-*/*.cabal cookbook-file-upload-*/*.cabal cookbook-https-*/*.cabal cookbook-jwt-and-basic-auth-*/*.cabal cookbook-pagination-*/*.cabal cookbook-structuring-apis-*/*.cabal cookbook-using-custom-monad-*/*.cabal\\n' > cabal.project"
- "echo 'constraints: foundation >=0.0.14,memory <0.14.12 || >0.14.12' >> cabal.project"
- "echo 'allow-newer: servant-auth-server:http-types,servant-auth-server:servant-server, http-media:base' >> cabal.project"
- cat cabal.project
- "echo 'allow-newer: servant-auth-server:http-types,servant-auth-server:servant-server, servant-pagination:servant,servant-pagination:servant-server' >> cabal.project"
- touch cabal.project.local
- "if ! $NOINSTALLEDCONSTRAINTS; then for pkg in $($HCPKG list --simple-output); do echo $pkg | sed 's/^/constraints: /' | sed 's/-[^-]*$/ installed/' >> cabal.project.local; done; fi"
- cat cabal.project || true
- cat cabal.project.local || true
- echo -en 'travis_fold:end:unpack\\r'
- echo Building with tests and benchmarks... && echo -en 'travis_fold:start:build-everything\\r'
# build & run tests, build benchmarks
- cabal new-build -w ${HC} ${TEST} ${BENCH} all
@ -176,5 +178,10 @@ script:
- if $HADDOCK; then cabal new-haddock -w ${HC} ${TEST} ${BENCH} all; else echo "Skipping haddock generation";fi
- echo -en 'travis_fold:end:haddock\\r'
- echo Building without installed constraints for packages in global-db... && echo -en 'travis_fold:start:build-installed\\r'
# Build without installed constraints for packages in global-db
- if $UNCONSTRAINED; then rm -f cabal.project.local; echo cabal new-build -w ${HC} --disable-tests --disable-benchmarks all; else echo "Not building without installed constraints"; fi
- echo -en 'travis_fold:end:build-installed\\r'
# REGENDATA ["--config=cabal.make-travis-yml","--output=.travis.yml","cabal.project"]
# EOF

View file

@ -1,12 +1,11 @@
folds: all-but-test
branches: master release-0.12
branches: master
-- We have inplace packages (servant-js) so we skip installing dependencies in a separate step
install-dependencies-step: False
-- this speed-ups the build a little, but we have to check these for release
no-tests-no-benchmarks: False
build-with-installed-step: False
-- Don't run cabal check, as cookbook examples won't pass it
cabal-check: False

View file

@ -11,11 +11,10 @@ packages: servant/
doc/cookbook/basic-auth
doc/cookbook/db-postgres-pool
doc/cookbook/db-sqlite-simple
-- MkLink changed
-- doc/cookbook/file-upload
doc/cookbook/file-upload
doc/cookbook/generic
doc/cookbook/https
-- servant-auth-* doesn't support GHC-8.4
-- doc/cookbook/jwt-and-basic-auth
doc/cookbook/jwt-and-basic-auth
doc/cookbook/pagination
doc/cookbook/structuring-apis
doc/cookbook/using-custom-monad
@ -30,4 +29,5 @@ constraints:
memory <0.14.12 || >0.14.12
allow-newer:
http-media:base
servant-pagination:servant,
servant-pagination:servant-server

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@ -0,0 +1,106 @@
# Using generics
```haskell
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE RankNTypes #-}
{-# LANGUAGE TypeOperators #-}
module Main (main, api, getLink, routesLinks, cliGet) where
import Control.Exception (throwIO)
import Data.Proxy (Proxy (..))
import Network.Wai.Handler.Warp (run)
import System.Environment (getArgs)
import Servant
import Servant.Client
import Servant.API.Generic
import Servant.Client.Generic
import Servant.Server.Generic
```
The usage is simple, if you only need a collection of routes.
First you define a record with field types prefixed by a parameter `route`:
```haskell
data Routes route = Routes
{ _get :: route :- Capture "id" Int :> Get '[JSON] String
, _put :: route :- ReqBody '[JSON] Int :> Put '[JSON] Bool
}
deriving (Generic)
```
Then we'll use this data type to define API, links, server and client.
## API
You can get a `Proxy` of the API using `genericApi`:
```haskell
api :: Proxy (ToServantApi Routes)
api = genericApi (Proxy :: Proxy Routes)
```
It's recommented to use `genericApi` function, as then you'll get
better error message, for example if you forget to `derive Generic`.
## Links
The clear advantage of record-based generics approach, is that
we can get safe links very conviently. We don't need to define endpoint types,
as field accessors work as proxies:
```haskell
getLink :: Int -> Link
getLink = fieldLink _get
```
We can also get all links at once, as a record:
```haskell
routesLinks :: Routes (AsLink Link)
routesLinks = allFieldLinks
```
## Client
Even more power starts to show when we generate a record of client functions.
Here we use `genericClientHoist` function, which let us simultaneously
hoist the monad, in this case from `ClientM` to `IO`.
```haskell
cliRoutes :: Routes (AsClientT IO)
cliRoutes = genericClientHoist
(\x -> runClientM x env >>= either throwIO return)
where
env = error "undefined environment"
cliGet :: Int -> IO String
cliGet = _get cliRoutes
```
## Server
Finally, probably the most handy usage: we can convert record of handlers into
the server implementation:
```haskell
record :: Routes AsServer
record = Routes
{ _get = return . show
, _put = return . odd
}
app :: Application
app = genericServe record
main :: IO ()
main = do
args <- getArgs
case args of
("run":_) -> do
putStrLn "Starting cookbook-generic at http://localhost:8000"
run 8000 app
_ -> putStrLn "To run, pass 'run' argument: cabal new-run cookbook-generic run"
```

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@ -0,0 +1,25 @@
name: cookbook-generic
version: 0.1
synopsis: Using custom monad to pass a state between handlers
homepage: http://haskell-servant.readthedocs.org/
license: BSD3
license-file: ../../../servant/LICENSE
author: Servant Contributors
maintainer: haskell-servant-maintainers@googlegroups.com
build-type: Simple
cabal-version: >=1.10
tested-with: GHC==7.8.4, GHC==7.10.3, GHC==8.0.2, GHC==8.2.2, GHC==8.4.3
executable cookbook-using-custom-monad
main-is: Generic.lhs
build-depends: base == 4.*
, servant
, servant-client
, servant-client-core
, servant-server
, base-compat
, warp >= 3.2
, transformers >= 0.3
default-language: Haskell2010
ghc-options: -Wall -pgmL markdown-unlit
build-tool-depends: markdown-unlit:markdown-unlit >= 0.4

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@ -18,6 +18,7 @@ you name it!
:maxdepth: 1
structuring-apis/StructuringApis.lhs
generic/Generic.lhs
https/Https.lhs
db-sqlite-simple/DBConnection.lhs
db-postgres-pool/PostgresPool.lhs

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@ -3,22 +3,24 @@ servant A Type-Level Web DSL
.. image:: https://raw.githubusercontent.com/haskell-servant/servant/master/servant.png
**servant** is a set of packages for declaring web APIs at the type-level and
then using those API specifications to:
**servant** is a set of Haskell libraries for writing *type-safe* web
applications but also *deriving* clients (in Haskell and other languages) or
generating documentation for them, and more.
- write servers (this part of **servant** can be considered a web framework),
- obtain client functions (in haskell),
- generate client functions for other programming languages,
- generate documentation for your web applications
- and more...
This is achieved by taking as input a description of the web API
as a Haskell type. Servant is then able to check that your server-side request
handlers indeed implement your web API faithfully, or to automatically derive
Haskell functions that can hit a web application that implements this API,
generate a Swagger description or code for client functions in some other
languages directly.
All in a type-safe manner.
If you would like to learn more, click the tutorial link below.
.. toctree::
:maxdepth: 2
introduction.rst
tutorial/index.rst
cookbook/index.rst
examples.md
links.rst
principles.rst

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@ -1,5 +1,5 @@
Introduction
------------
Principles
----------
**servant** has the following guiding principles:

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@ -477,7 +477,7 @@ data AngularOptions = AngularOptions
}
```
# Custom function name builder
## Custom function name builder
Servant comes with three name builders included:
@ -518,4 +518,3 @@ var get_books = function(q, onSuccess, onError)
}
```

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@ -3,9 +3,28 @@ Tutorial
This is an introductory tutorial to **servant**. Whilst browsing is fine, it makes more sense if you read the sections in order, or at least read the first section before anything else.
(Any comments, issues or feedback about the tutorial can be submitted
to `servant's issue tracker <http://github.com/haskell-servant/servant/issues>`_.)
Any comments, issues or feedback about the tutorial can be submitted
to `servant's issue tracker <http://github.com/haskell-servant/servant/issues>`_.
In fact, the whole tutorial is a `cabal <https://cabal.readthedocs.io/en/latest/>`_
project and can be built and played with locally as follows:
.. code-block:: bash
$ git clone https://github.com/haskell-servant/servant.git
$ cd servant
# build
$ cabal new-build tutorial
# load in ghci to play with it
$ cabal new-repl tutorial
The code can be found in the `*.lhs` files under `doc/tutorial/` in the
repository. Feel free to edit it while you're reading this documentation and
see the effect of your changes.
`Nix <https://nixos.org/nix/>`_ users should feel free to take a look at
the `nix/shell.nix` file in the repository and use it to provision a suitable
environment to build and run the examples.
.. toctree::
:maxdepth: 1

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@ -75,8 +75,8 @@ library
, time >= 1.4.2 && < 1.9
-- For legacy tools, we need to specify build-depends too
build-depends: markdown-unlit >= 0.4.1 && <0.5
build-tool-depends: markdown-unlit:markdown-unlit >= 0.4.1 && <0.5
build-depends: markdown-unlit >= 0.5.0 && <0.6
build-tool-depends: markdown-unlit:markdown-unlit >= 0.5.0 && <0.6
test-suite spec
type: exitcode-stdio-1.0

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@ -1,13 +1,61 @@
[The latest version of this document is on GitHub.](https://github.com/haskell-servant/servant/blob/master/servant-client-core/CHANGELOG.md)
[Changelog for `servant` package contains significant entries for all core packages.](https://github.com/haskell-servant/servant/blob/master/servant/CHANGELOG.md)
0.14.1
------
- Merge in `servant-generic` (by [Patrick Chilton](https://github.com/chpatrick))
into `servant` (`Servant.API.Generic`),
`servant-client-code` (`Servant.Client.Generic`)
and `servant-server` (`Servant.Server.Generic`).
0.14
----
- Add a `hoistClientMonad` method to the `HasClient` typeclass, for
changing the monad in which client functions run.
- `Stream` takes a status code argument
```diff
-Stream method framing ctype a
+Stream method status framing ctype a
```
([#966](https://github.com/haskell-servant/servant/pull/966)
[#972](https://github.com/haskell-servant/servant/pull/972))
- `ToStreamGenerator` definition changed, so it's possible to write an instance
for conduits.
```diff
-class ToStreamGenerator f a where
- toStreamGenerator :: f a -> StreamGenerator a
+class ToStreamGenerator a b | a -> b where
+ toStreamGenerator :: a -> StreamGenerator b
```
([#959](https://github.com/haskell-servant/servant/pull/959))
- Added `NoFraming` streaming strategy
([#959](https://github.com/haskell-servant/servant/pull/959))
- *servant-client-core* Free `Client` implementation.
Useful for testing `HasClient` instances.
([#920](https://github.com/haskell-servant/servant/pull/920))
- *servant-client-core* Add `hoistClient` to `HasClient`.
Just like `hoistServer` allows us to change the monad in which request handlers
of a web application live in, we also have `hoistClient` for changing the monad
in which *client functions* live.
Read [tutorial section for more information](https://haskell-servant.readthedocs.io/en/release-0.14/tutorial/Client.html#changing-the-monad-the-client-functions-live-in).
([#936](https://github.com/haskell-servant/servant/pull/936))
iF you have own combinators, you'll need to define a new method of
`HasClient` class, for example:
```haskell
type Client m (MyCombinator :> api) = MyValue :> Client m api
hoistClientMonad pm _ nt cl = hoistClientMonad pm (Proxy :: Proxy api) nt . cl
```
0.13.0.1
--------

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@ -1,2 +1,2 @@
import Distribution.Simple
import Distribution.Simple
main = defaultMain

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@ -1,5 +1,5 @@
name: servant-client-core
version: 0.13
version: 0.14.1
synopsis: Core functionality and class for client function generation for servant APIs
description:
This library provides backend-agnostic generation of client functions. For
@ -33,6 +33,7 @@ library
exposed-modules:
Servant.Client.Core
Servant.Client.Free
Servant.Client.Generic
Servant.Client.Core.Reexport
Servant.Client.Core.Internal.Auth
Servant.Client.Core.Internal.BaseUrl
@ -51,30 +52,30 @@ library
base >= 4.7 && < 4.12
, bytestring >= 0.10.4.0 && < 0.11
, containers >= 0.5.5.1 && < 0.6
, mtl >= 2.1 && < 2.3
, text >= 1.2.3.0 && < 1.3
, transformers >= 0.3.0.0 && < 0.6
if !impl(ghc >= 8.0)
build-depends:
semigroups >=0.18.3 && <0.19
semigroups >=0.18.4 && <0.19
-- Servant dependencies
build-depends:
servant == 0.13.*
servant >= 0.14.1 && <0.15
-- Other dependencies: Lower bound around what is in the latest Stackage LTS.
-- Here can be exceptions if we really need features from the newer versions.
build-depends:
base-compat >= 0.9.3 && < 0.11
base-compat >= 0.10.1 && < 0.11
, base64-bytestring >= 1.0.0.1 && < 1.1
, exceptions >= 0.8.3 && < 0.11
, free >= 5.0.1 && < 5.1
, generics-sop >= 0.3.1.0 && < 0.4
, http-api-data >= 0.3.7.1 && < 0.4
, http-media >= 0.7.1.1 && < 0.8
, http-types >= 0.12 && < 0.13
, exceptions >= 0.10.0 && < 0.11
, free >= 5.0.2 && < 5.2
, generics-sop >= 0.3.2.0 && < 0.4
, http-api-data >= 0.3.8.1 && < 0.4
, http-media >= 0.7.1.2 && < 0.8
, http-types >= 0.12.1 && < 0.13
, network-uri >= 2.6.1.0 && < 2.7
, safe >= 0.3.15 && < 0.4
, safe >= 0.3.17 && < 0.4
hs-source-dirs: src
default-language: Haskell2010
@ -99,8 +100,8 @@ test-suite spec
-- Additonal dependencies
build-depends:
deepseq >= 1.3.0.2 && <1.5
, hspec >= 2.4.4 && <2.6
, QuickCheck >= 2.10.1 && < 2.12
, hspec >= 2.4.1 && <2.6
, QuickCheck >= 2.11.3 && < 2.12
build-tool-depends:
hspec-discover:hspec-discover >= 2.4.4 && <2.6
hspec-discover:hspec-discover >= 2.5.1 && <2.6

View file

@ -55,13 +55,11 @@ module Servant.Client.Core
, setRequestBody
) where
import Servant.Client.Core.Internal.Auth
import Servant.Client.Core.Internal.BaseUrl (BaseUrl (..),
InvalidBaseUrlException,
Scheme (..),
parseBaseUrl,
showBaseUrl)
import Servant.Client.Core.Internal.BaseUrl
(BaseUrl (..), InvalidBaseUrlException, Scheme (..),
parseBaseUrl, showBaseUrl)
import Servant.Client.Core.Internal.BasicAuth
import Servant.Client.Core.Internal.HasClient
import Servant.Client.Core.Internal.Generic
import Servant.Client.Core.Internal.HasClient
import Servant.Client.Core.Internal.Request
import Servant.Client.Core.Internal.RunClient

View file

@ -6,7 +6,8 @@
module Servant.Client.Core.Internal.Auth where
import Servant.Client.Core.Internal.Request (Request)
import Servant.Client.Core.Internal.Request
(Request)
-- | For a resource protected by authentication (e.g. AuthProtect), we need
-- to provide the client with some data used to add authentication data

View file

@ -3,11 +3,13 @@
{-# LANGUAGE ViewPatterns #-}
module Servant.Client.Core.Internal.BaseUrl where
import Control.Monad.Catch (Exception, MonadThrow, throwM)
import Control.Monad.Catch
(Exception, MonadThrow, throwM)
import Data.List
import Data.Typeable
import GHC.Generics
import Network.URI hiding (path)
import Network.URI hiding
(path)
import Safe
import Text.Read

View file

@ -6,11 +6,16 @@
module Servant.Client.Core.Internal.BasicAuth where
import Data.ByteString.Base64 (encode)
import Data.Monoid ((<>))
import Data.Text.Encoding (decodeUtf8)
import Servant.API.BasicAuth (BasicAuthData (BasicAuthData))
import Servant.Client.Core.Internal.Request (Request, addHeader)
import Data.ByteString.Base64
(encode)
import Data.Monoid
((<>))
import Data.Text.Encoding
(decodeUtf8)
import Servant.API.BasicAuth
(BasicAuthData (BasicAuthData))
import Servant.Client.Core.Internal.Request
(Request, addHeader)
-- | Authenticate a request using Basic Authentication
basicAuthReq :: BasicAuthData -> Request -> Request

View file

@ -1,7 +1,7 @@
{-# LANGUAGE DeriveFunctor #-}
module Servant.Client.Core.Internal.ClientF where
import Servant.Client.Core.Internal.Request
import Servant.Client.Core.Internal.Request
data ClientF a
= RunRequest Request (Response -> a)

View file

@ -1,19 +1,21 @@
{-# LANGUAGE CPP #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE DefaultSignatures #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE CPP #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE DefaultSignatures #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE UndecidableInstances #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE UndecidableInstances #-}
#include "overlapping-compat.h"
module Servant.Client.Core.Internal.Generic where
import Generics.SOP (Code, Generic, I(..), NP(..), NS(Z), SOP(..), to)
import Servant.API ((:<|>)(..))
import Generics.SOP
(Code, Generic, I (..), NP (..), NS (Z), SOP (..), to)
import Servant.API
((:<|>) (..))
-- | This class allows us to match client structure with client functions
-- produced with 'client' without explicit pattern-matching.

View file

@ -15,53 +15,46 @@
#include "overlapping-compat.h"
module Servant.Client.Core.Internal.HasClient where
import Prelude ()
import Prelude ()
import Prelude.Compat
import Control.Concurrent (newMVar, modifyMVar)
import Data.Foldable (toList)
import Control.Concurrent
(modifyMVar, newMVar)
import Control.Monad.IO.Class
(MonadIO (..))
import qualified Data.ByteString.Lazy as BL
import Data.List (foldl')
import Data.Proxy (Proxy (Proxy))
import Data.Semigroup ((<>))
import Data.Sequence (fromList)
import Data.String (fromString)
import Data.Text (Text, pack)
import GHC.TypeLits (KnownSymbol, symbolVal)
import Data.Foldable
(toList)
import Data.List
(foldl')
import Data.Proxy
(Proxy (Proxy))
import Data.Semigroup
((<>))
import Data.Sequence
(fromList)
import Data.String
(fromString)
import Data.Text
(Text, pack)
import GHC.TypeLits
(KnownSymbol, symbolVal)
import qualified Network.HTTP.Types as H
import Servant.API ((:<|>) ((:<|>)), (:>),
AuthProtect, BasicAuth,
BasicAuthData,
BuildHeadersTo (..),
BuildFromStream (..),
ByteStringParser (..),
Capture', CaptureAll,
Description, EmptyAPI,
FramingUnrender (..),
Header', Headers (..),
HttpVersion, IsSecure,
MimeRender (mimeRender),
MimeUnrender (mimeUnrender),
NoContent (NoContent),
QueryFlag, QueryParam',
QueryParams, Raw,
ReflectMethod (..),
RemoteHost, ReqBody',
ResultStream(..),
SBoolI,
Stream,
Summary, ToHttpApiData,
Vault, Verb,
WithNamedContext,
contentType,
getHeadersHList,
getResponse,
toQueryParam,
toUrlPiece)
import Servant.API.ContentTypes (contentTypes)
import Servant.API.Modifiers (FoldRequired,
RequiredArgument,
foldRequiredArgument)
import Servant.API
((:<|>) ((:<|>)), (:>), AuthProtect, BasicAuth, BasicAuthData,
BuildHeadersTo (..), ByteStringParser (..), Capture',
CaptureAll, Description, EmptyAPI, FramingUnrender (..),
FromResultStream (..), Header', Headers (..), HttpVersion,
IsSecure, MimeRender (mimeRender),
MimeUnrender (mimeUnrender), NoContent (NoContent), QueryFlag,
QueryParam', QueryParams, Raw, ReflectMethod (..), RemoteHost,
ReqBody', ResultStream (..), SBoolI, Stream, Summary,
ToHttpApiData, Vault, Verb, WithNamedContext, contentType,
getHeadersHList, getResponse, toQueryParam, toUrlPiece)
import Servant.API.ContentTypes
(contentTypes)
import Servant.API.Modifiers
(FoldRequired, RequiredArgument, foldRequiredArgument)
import Servant.Client.Core.Internal.Auth
import Servant.Client.Core.Internal.BasicAuth
@ -283,18 +276,18 @@ instance OVERLAPPING_
hoistClientMonad _ _ f ma = f ma
instance OVERLAPPABLE_
( RunClient m, MimeUnrender ct a, ReflectMethod method,
FramingUnrender framing a, BuildFromStream a (f a)
) => HasClient m (Stream method status framing ct (f a)) where
( RunClient m, MonadIO m, MimeUnrender ct a, ReflectMethod method,
FramingUnrender framing a, FromResultStream a b
) => HasClient m (Stream method status framing ct b) where
type Client m (Stream method status framing ct (f a)) = m (f a)
type Client m (Stream method status framing ct b) = m b
clientWithRoute _pm Proxy req = do
sresp <- streamingRequest req
{ requestAccept = fromList [contentType (Proxy :: Proxy ct)]
, requestMethod = reflectMethod (Proxy :: Proxy method)
}
return . buildFromStream $ ResultStream $ \k ->
liftIO $ fromResultStream $ ResultStream $ \k ->
runStreamingResponse sresp $ \gres -> do
let reader = responseBody gres
let unrender = unrenderFrames (Proxy :: Proxy framing) (Proxy :: Proxy a)

View file

@ -12,26 +12,34 @@
module Servant.Client.Core.Internal.Request where
import Prelude ()
import Prelude ()
import Prelude.Compat
import Control.Monad.Catch (Exception)
import Control.Monad.Catch
(Exception)
import qualified Data.ByteString as BS
import qualified Data.ByteString.Builder as Builder
import qualified Data.ByteString.Lazy as LBS
import Data.Int (Int64)
import Data.Semigroup ((<>))
import Data.Int
(Int64)
import Data.Semigroup
((<>))
import qualified Data.Sequence as Seq
import Data.Text (Text)
import Data.Text.Encoding (encodeUtf8)
import Data.Typeable (Typeable)
import GHC.Generics (Generic)
import Network.HTTP.Media (MediaType)
import Network.HTTP.Types (Header, HeaderName, HttpVersion,
Method, QueryItem, Status, http11,
methodGet)
import Web.HttpApiData (ToHttpApiData, toEncodedUrlPiece,
toHeader)
import Data.Text
(Text)
import Data.Text.Encoding
(encodeUtf8)
import Data.Typeable
(Typeable)
import GHC.Generics
(Generic)
import Network.HTTP.Media
(MediaType)
import Network.HTTP.Types
(Header, HeaderName, HttpVersion, Method, QueryItem, Status,
http11, methodGet)
import Web.HttpApiData
(ToHttpApiData, toEncodedUrlPiece, toHeader)
-- | A type representing possible errors in a request
--

View file

@ -6,24 +6,27 @@
-- | Types for possible backends to run client-side `Request` queries
module Servant.Client.Core.Internal.RunClient where
import Prelude ()
import Prelude ()
import Prelude.Compat
import Control.Monad (unless)
import Control.Monad.Free (Free (..), liftF)
import Data.Foldable (toList)
import Data.Proxy (Proxy)
import Control.Monad
(unless)
import Control.Monad.Free
(Free (..), liftF)
import Data.Foldable
(toList)
import Data.Proxy
(Proxy)
import qualified Data.Text as T
import Network.HTTP.Media (MediaType, matches,
parseAccept, (//))
import Servant.API (MimeUnrender,
contentTypes,
mimeUnrender)
import Network.HTTP.Media
(MediaType, matches, parseAccept, (//))
import Servant.API
(MimeUnrender, contentTypes, mimeUnrender)
import Servant.Client.Core.Internal.Request (Request, Response, GenResponse (..),
StreamingResponse (..),
ServantError (..))
import Servant.Client.Core.Internal.ClientF
import Servant.Client.Core.Internal.Request
(GenResponse (..), Request, Response, ServantError (..),
StreamingResponse (..))
class Monad m => RunClient m where
-- | How to make a request.

View file

@ -28,6 +28,6 @@ module Servant.Client.Core.Reexport
import Servant.Client.Core.Internal.BaseUrl
import Servant.Client.Core.Internal.HasClient
import Servant.Client.Core.Internal.Generic
import Servant.Client.Core.Internal.HasClient
import Servant.Client.Core.Internal.Request

View file

@ -1,15 +1,18 @@
{-# LANGUAGE ScopedTypeVariables, FlexibleContexts, GADTs #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE GADTs #-}
{-# LANGUAGE ScopedTypeVariables #-}
module Servant.Client.Free (
client,
ClientF (..),
module Servant.Client.Core.Reexport,
) where
import Data.Proxy (Proxy (..))
import Control.Monad.Free
import Servant.Client.Core
import Servant.Client.Core.Reexport
import Servant.Client.Core.Internal.ClientF
import Control.Monad.Free
import Data.Proxy
(Proxy (..))
import Servant.Client.Core
import Servant.Client.Core.Internal.ClientF
import Servant.Client.Core.Reexport
client :: HasClient (Free ClientF) api => Proxy api -> Client (Free ClientF) api
client api = api `clientIn` (Proxy :: Proxy (Free ClientF))

View file

@ -0,0 +1,51 @@
{-# LANGUAGE ConstraintKinds #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE KindSignatures #-}
{-# LANGUAGE RankNTypes #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TypeFamilies #-}
module Servant.Client.Generic (
AsClientT,
genericClient,
genericClientHoist,
) where
import Data.Proxy
(Proxy (..))
import Servant.API.Generic
import Servant.Client.Core
-- | A type that specifies that an API reocrd contains a client implementation.
data AsClientT (m :: * -> *)
instance GenericMode (AsClientT m) where
type AsClientT m :- api = Client m api
-- | Generate a record of client functions.
genericClient
:: forall routes m.
( HasClient m (ToServantApi routes)
, GenericServant routes (AsClientT m)
, Client m (ToServantApi routes) ~ ToServant routes (AsClientT m)
)
=> routes (AsClientT m)
genericClient
= fromServant
$ clientIn (Proxy :: Proxy (ToServantApi routes)) (Proxy :: Proxy m)
-- | 'genericClient' but with 'hoistClientMonad' in between.
genericClientHoist
:: forall routes m n.
( HasClient m (ToServantApi routes)
, GenericServant routes (AsClientT n)
, Client n (ToServantApi routes) ~ ToServant routes (AsClientT n)
)
=> (forall x. m x -> n x) -- ^ natural transformation
-> routes (AsClientT n)
genericClientHoist nt
= fromServant
$ hoistClientMonad m api nt
$ clientIn api m
where
m = Proxy :: Proxy m
api = Proxy :: Proxy (ToServantApi routes)

View file

@ -1,5 +1,5 @@
name: servant-client-ghcjs
version: 0.13
version: 0.14
synopsis: automatical derivation of querying functions for servant webservices for ghcjs
description:
This library lets you automatically derive Haskell functions that
@ -43,7 +43,7 @@ library
, monad-control >= 1.0.0.4 && < 1.1
, mtl >= 2.1 && < 2.3
, semigroupoids >= 4.3 && < 5.3
, servant-client-core == 0.13.*
, servant-client-core == 0.14.*
, string-conversions >= 0.3 && < 0.5
, transformers >= 0.3 && < 0.6
, transformers-base >= 0.4.4 && < 0.5

View file

@ -26,6 +26,7 @@ import Control.Monad.Trans.Control (MonadBaseControl (..))
import Control.Monad.Trans.Except
import Data.ByteString.Builder (toLazyByteString)
import qualified Data.ByteString.Char8 as BS
import qualified Data.ByteString.Lazy as BL
import Data.CaseInsensitive
import Data.Char
import Data.Foldable (toList)
@ -34,11 +35,14 @@ import Data.IORef (modifyIORef, newIORef, readIORef)
import Data.Proxy (Proxy (..))
import qualified Data.Sequence as Seq
import Data.String.Conversions
import Data.Typeable (Typeable)
import Foreign.StablePtr
import GHC.Generics
import qualified GHCJS.Buffer as Buffer
import GHCJS.Foreign.Callback
import GHCJS.Prim
import GHCJS.Types
import JavaScript.TypedArray.ArrayBuffer ( ArrayBuffer )
import JavaScript.Web.Location
import Network.HTTP.Media (renderHeader)
import Network.HTTP.Types
@ -48,14 +52,34 @@ newtype JSXMLHttpRequest = JSXMLHttpRequest JSVal
newtype JSXMLHttpRequestClass = JSXMLHttpRequestClass JSVal
-- | The environment in which a request is run.
newtype ClientEnv
= ClientEnv
{ baseUrl :: BaseUrl }
deriving (Eq, Show)
-- | Generates a set of client functions for an API.
--
-- Example:
--
-- > type API = Capture "no" Int :> Get '[JSON] Int
-- > :<|> Get '[JSON] [Bool]
-- >
-- > api :: Proxy API
-- > api = Proxy
-- >
-- > getInt :: Int -> ClientM Int
-- > getBools :: ClientM [Bool]
-- > getInt :<|> getBools = client api
--
-- NOTE: Does not support constant space streaming of the request body!
client :: HasClient ClientM api => Proxy api -> Client ClientM api
client api = api `clientIn` (Proxy :: Proxy ClientM)
-- | @ClientM@ is the monad in which client functions run. Contains the
-- 'BaseUrl' used for requests in the reader environment.
--
-- NOTE: Does not support constant space streaming of the request body!
newtype ClientM a = ClientM
{ runClientM' :: ReaderT ClientEnv (ExceptT ServantError IO) a }
deriving ( Functor, Applicative, Monad, MonadIO, Generic
@ -76,8 +100,15 @@ instance MonadBaseControl IO ClientM where
instance Alt ClientM where
a <!> b = a `catchError` const b
data StreamingNotSupportedException = StreamingNotSupportedException
deriving ( Typeable, Show )
instance Exception StreamingNotSupportedException where
displayException _ = "streamingRequest: streaming is not supported!"
instance RunClient ClientM where
runRequest = performRequest
streamingRequest _ = liftIO $ throwIO StreamingNotSupportedException
throwServantError = throwError
instance ClientLike (ClientM a) (ClientM a) where
@ -153,6 +184,7 @@ performXhr xhr burl request = do
openXhr xhr (cs $ requestMethod request) (toUrl burl request) True
setHeaders xhr request
js_setResponseType xhr "arraybuffer"
body <- toBody request
sendXhr xhr body
takeMVar waiter
@ -187,6 +219,9 @@ openXhr xhr method url =
foreign import javascript unsafe "$1.open($2, $3, $4)"
js_openXhr :: JSXMLHttpRequest -> JSVal -> JSVal -> Bool -> IO ()
foreign import javascript unsafe "$1.responseType = $2;"
js_setResponseType :: JSXMLHttpRequest -> JSString -> IO ()
toUrl :: BaseUrl -> Request -> String
toUrl burl request =
let pathS = cs $ toLazyByteString $ requestPath request
@ -217,35 +252,38 @@ setHeaders xhr request = do
foreign import javascript unsafe "$1.setRequestHeader($2, $3)"
js_setRequestHeader :: JSXMLHttpRequest -> JSVal -> JSVal -> IO ()
sendXhr :: JSXMLHttpRequest -> Maybe String -> IO ()
sendXhr :: JSXMLHttpRequest -> Maybe ArrayBuffer -> IO ()
sendXhr xhr Nothing = js_sendXhr xhr
sendXhr xhr (Just body) =
js_sendXhrWithBody xhr (toJSString body)
js_sendXhrWithBody xhr body
foreign import javascript unsafe "$1.send()"
js_sendXhr :: JSXMLHttpRequest -> IO ()
foreign import javascript unsafe "$1.send($2)"
js_sendXhrWithBody :: JSXMLHttpRequest -> JSVal -> IO ()
js_sendXhrWithBody :: JSXMLHttpRequest -> ArrayBuffer -> IO ()
toBody :: Request -> IO (Maybe String)
toBody :: Request -> IO (Maybe ArrayBuffer)
toBody request = case requestBody request of
Nothing -> return Nothing
Just (a, _) -> go a
Just (a, _) -> Just <$> go a
where
go :: RequestBody -> IO (Maybe String)
go :: RequestBody -> IO ArrayBuffer
go x = case x of
RequestBodyLBS x -> return $ mBody x
RequestBodyLBS x -> return $ mBody $ BL.toStrict x
RequestBodyBS x -> return $ mBody x
RequestBodyBuilder _ x -> return $ mBody $ toLazyByteString x
RequestBodyBuilder _ x -> return $ mBody $ BL.toStrict $ toLazyByteString x
RequestBodyStream _ x -> mBody <$> readBody x
RequestBodyStreamChunked x -> mBody <$> readBody x
RequestBodyIO x -> x >>= go
mBody :: ConvertibleStrings a String => a -> Maybe String
mBody x = let y = cs x in if y == "" then Nothing else Just y
mBody :: BS.ByteString -> ArrayBuffer
mBody bs = js_bufferSlice offset len $ Buffer.getArrayBuffer buffer
where
(buffer, offset, len) = Buffer.fromByteString bs
readBody :: ((IO BS.ByteString -> IO ()) -> IO a) -> IO BS.ByteString
readBody writer = do
m <- newIORef mempty
_ <- writer (\bsAct -> do
@ -253,6 +291,8 @@ toBody request = case requestBody request of
modifyIORef m (<> bs))
readIORef m
foreign import javascript unsafe "$3.slice($1, $1 + $2)"
js_bufferSlice :: Int -> Int -> ArrayBuffer -> ArrayBuffer
-- * inspecting the xhr response
@ -266,10 +306,10 @@ toResponse xhr = do
_ -> liftIO $ do
statusText <- cs <$> getStatusText xhr
headers <- parseHeaders <$> getAllResponseHeaders xhr
responseText <- cs <$> getResponseText xhr
response <- getResponse xhr
pure Response
{ responseStatusCode = mkStatus status statusText
, responseBody = responseText
, responseBody = response
, responseHeaders = Seq.fromList headers
, responseHttpVersion = http11 -- this is made up
}
@ -288,14 +328,19 @@ getAllResponseHeaders xhr =
foreign import javascript unsafe "$1.getAllResponseHeaders()"
js_getAllResponseHeaders :: JSXMLHttpRequest -> IO JSVal
getResponseText :: JSXMLHttpRequest -> IO String
getResponseText xhr = fromJSString <$> js_responseText xhr
foreign import javascript unsafe "$1.responseText"
js_responseText :: JSXMLHttpRequest -> IO JSVal
getResponse :: JSXMLHttpRequest -> IO BL.ByteString
getResponse xhr =
BL.fromStrict
. Buffer.toByteString 0 Nothing
. Buffer.createFromArrayBuffer
<$> js_response xhr
foreign import javascript unsafe "$1.response"
js_response :: JSXMLHttpRequest -> IO ArrayBuffer
parseHeaders :: String -> ResponseHeaders
parseHeaders s =
(first mk . first strip . second strip . parseHeader) <$>
first mk . first strip . second strip . parseHeader <$>
splitOn "\r\n" (cs s)
where
parseHeader :: BS.ByteString -> (BS.ByteString, BS.ByteString)

View file

@ -4,10 +4,45 @@
0.14
----
- Add `hoistClient` for changing the monad in which
client functions run.
- `Stream` takes a status code argument
```diff
-Stream method framing ctype a
+Stream method status framing ctype a
```
([#966](https://github.com/haskell-servant/servant/pull/966)
[#972](https://github.com/haskell-servant/servant/pull/972))
- `ToStreamGenerator` definition changed, so it's possible to write an instance
for conduits.
```diff
-class ToStreamGenerator f a where
- toStreamGenerator :: f a -> StreamGenerator a
+class ToStreamGenerator a b | a -> b where
+ toStreamGenerator :: a -> StreamGenerator b
```
([#959](https://github.com/haskell-servant/servant/pull/959))
- Added `NoFraming` streaming strategy
([#959](https://github.com/haskell-servant/servant/pull/959))
- *servant-client-core* Add `hoistClient` to `HasClient`.
Just like `hoistServer` allows us to change the monad in which request handlers
of a web application live in, we also have `hoistClient` for changing the monad
in which *client functions* live.
Read [tutorial section for more information](https://haskell-servant.readthedocs.io/en/release-0.14/tutorial/Client.html#changing-the-monad-the-client-functions-live-in).
([#936](https://github.com/haskell-servant/servant/pull/936))
- *servant-client* Add more constructors to `RequestBody`, including
`RequestBodyStream`.
*Note:* we are looking for http-library agnostic API,
so the might change again soon.
Tell us which constructors are useful for you!
([#913](https://github.com/haskell-servant/servant/pull/913))
0.13.0.1
--------

View file

@ -1,5 +1,5 @@
name: servant-client
version: 0.13.0.1
version: 0.14
synopsis: automatical derivation of querying functions for servant webservices
description:
This library lets you derive automatically Haskell functions that
@ -51,28 +51,25 @@ library
, transformers >= 0.3.0.0 && < 0.6
if !impl(ghc >= 8.0)
build-depends: semigroups >=0.18.3 && <0.19
build-depends: semigroups >=0.18.4 && <0.19
-- Servant dependencies
build-depends:
servant-client-core == 0.13.*
servant-client-core == 0.14.*
-- Other dependencies: Lower bound around what is in the latest Stackage LTS.
-- Here can be exceptions if we really need features from the newer versions.
build-depends:
aeson >= 1.2.3.0 && < 1.4
, base-compat >= 0.9.3 && < 0.11
, attoparsec >= 0.13.2.0 && < 0.14
, http-client >= 0.5.7.1 && < 0.6
, http-client-tls >= 0.3.5.1 && < 0.4
, http-media >= 0.7.1.1 && < 0.8
, http-types >= 0.12 && < 0.13
, exceptions >= 0.8.3 && < 0.11
, monad-control >= 1.0.0.4 && < 1.1
, semigroupoids >= 5.2.1 && < 5.3
, stm >= 2.4.4.1 && < 2.5
, transformers-base >= 0.4.4 && < 0.5
, transformers-compat >= 0.5.1 && < 0.7
base-compat >= 0.10.1 && < 0.11
, http-client >= 0.5.12 && < 0.6
, http-media >= 0.7.1.2 && < 0.8
, http-types >= 0.12.1 && < 0.13
, exceptions >= 0.10.0 && < 0.11
, monad-control >= 1.0.2.3 && < 1.1
, semigroupoids >= 5.2.2 && < 5.3
, stm >= 2.4.5.0 && < 2.5
, transformers-base >= 0.4.5.2 && < 0.5
, transformers-compat >= 0.6.2 && < 0.7
hs-source-dirs: src
default-language: Haskell2010
@ -97,10 +94,8 @@ test-suite spec
, aeson
, base-compat
, bytestring
, containers
, http-api-data
, http-client
, http-media
, http-types
, mtl
, servant-client
@ -117,18 +112,16 @@ test-suite spec
-- Additonal dependencies
build-depends:
deepseq >= 1.3.0.2 && < 1.5
, generics-sop >= 0.3.1.0 && < 0.4
, hspec >= 2.4.4 && < 2.6
generics-sop >= 0.3.2.0 && < 0.4
, hspec >= 2.5.1 && < 2.6
, HUnit >= 1.6 && < 1.7
, random-bytestring >= 0.1 && < 0.2
, network >= 2.6.3.2 && < 2.8
, QuickCheck >= 2.10.1 && < 2.12
, servant == 0.13.*
, servant-server == 0.13.*
, servant == 0.14.*
, servant-server == 0.14.*
build-tool-depends:
hspec-discover:hspec-discover >= 2.4.4 && < 2.6
hspec-discover:hspec-discover >= 2.5.1 && < 2.6
test-suite readme
type: exitcode-stdio-1.0
@ -136,3 +129,4 @@ test-suite readme
build-depends: base, servant, http-client, text, servant-client, markdown-unlit
build-tool-depends: markdown-unlit:markdown-unlit
ghc-options: -pgmL markdown-unlit
default-language: Haskell2010

View file

@ -13,5 +13,5 @@ module Servant.Client
, module Servant.Client.Core.Reexport
) where
import Servant.Client.Core.Reexport
import Servant.Client.Internal.HttpClient
import Servant.Client.Core.Reexport
import Servant.Client.Internal.HttpClient

View file

@ -11,34 +11,49 @@
{-# LANGUAGE TypeFamilies #-}
module Servant.Client.Internal.HttpClient where
import Prelude ()
import Prelude ()
import Prelude.Compat
import Control.Concurrent.STM.TVar
import Control.Exception
import Control.Monad
import Control.Monad.Base (MonadBase (..))
import Control.Monad.Catch (MonadCatch, MonadThrow)
import Control.Monad.Error.Class (MonadError (..))
import Control.Monad.Base
(MonadBase (..))
import Control.Monad.Catch
(MonadCatch, MonadThrow)
import Control.Monad.Error.Class
(MonadError (..))
import Control.Monad.Reader
import Control.Monad.STM (atomically)
import Control.Monad.Trans.Control (MonadBaseControl (..))
import Control.Monad.STM
(atomically)
import Control.Monad.Trans.Control
(MonadBaseControl (..))
import Control.Monad.Trans.Except
import Data.ByteString.Builder (toLazyByteString)
import Data.ByteString.Builder
(toLazyByteString)
import qualified Data.ByteString.Lazy as BSL
import Data.Foldable (toList, for_)
import Data.Functor.Alt (Alt (..))
import Data.Maybe (maybeToList)
import Data.Semigroup ((<>))
import Data.Proxy (Proxy (..))
import Data.Sequence (fromList)
import Data.String (fromString)
import Data.Foldable
(for_, toList)
import Data.Functor.Alt
(Alt (..))
import Data.Maybe
(maybeToList)
import Data.Proxy
(Proxy (..))
import Data.Semigroup
((<>))
import Data.Sequence
(fromList)
import Data.String
(fromString)
import qualified Data.Text as T
import Data.Time.Clock (getCurrentTime)
import Data.Time.Clock
(getCurrentTime)
import GHC.Generics
import Network.HTTP.Media (renderHeader)
import Network.HTTP.Types (hContentType, renderQuery,
statusCode)
import Network.HTTP.Media
(renderHeader)
import Network.HTTP.Types
(hContentType, renderQuery, statusCode)
import Servant.Client.Core
import qualified Network.HTTP.Client as Client

View file

@ -26,56 +26,53 @@
#include "overlapping-compat.h"
module Servant.ClientSpec (spec, Person(..), startWaiApp, endWaiApp) where
import Prelude ()
import Prelude ()
import Prelude.Compat
import Control.Arrow (left)
import Control.Concurrent (ThreadId, forkIO,
killThread)
import Control.Exception (bracket)
import Control.Monad.Error.Class (throwError)
import Control.Arrow
(left)
import Control.Concurrent
(ThreadId, forkIO, killThread)
import Control.Exception
(bracket)
import Control.Monad.Error.Class
(throwError)
import Data.Aeson
import Data.Char (chr, isPrint)
import Data.Foldable (forM_)
import Data.Semigroup ((<>))
import Data.Monoid ()
import Data.Char
(chr, isPrint)
import Data.Foldable
(forM_)
import Data.Monoid ()
import Data.Proxy
import Data.Semigroup
((<>))
import qualified Generics.SOP as SOP
import GHC.Generics (Generic)
import GHC.Generics
(Generic)
import qualified Network.HTTP.Client as C
import qualified Network.HTTP.Types as HTTP
import Network.Socket
import qualified Network.Wai as Wai
import Network.Wai.Handler.Warp
import System.IO.Unsafe (unsafePerformIO)
import System.IO.Unsafe
(unsafePerformIO)
import Test.Hspec
import Test.Hspec.QuickCheck
import Test.HUnit
import Test.QuickCheck
import Web.FormUrlEncoded (FromForm, ToForm)
import Web.FormUrlEncoded
(FromForm, ToForm)
import Servant.API ((:<|>) ((:<|>)),
(:>), AuthProtect,
BasicAuth,
BasicAuthData (..),
Capture,
CaptureAll, Delete,
DeleteNoContent,
EmptyAPI, addHeader,
FormUrlEncoded,
Get, Header,
Headers, JSON,
NoContent (NoContent),
Post, Put, Raw,
QueryFlag,
QueryParam,
QueryParams,
ReqBody,
getHeaders)
import Servant.API
((:<|>) ((:<|>)), (:>), AuthProtect, BasicAuth,
BasicAuthData (..), Capture, CaptureAll, Delete,
DeleteNoContent, EmptyAPI, FormUrlEncoded, Get, Header,
Headers, JSON, NoContent (NoContent), Post, Put, QueryFlag,
QueryParam, QueryParams, Raw, ReqBody, addHeader, getHeaders)
import Servant.API.Internal.Test.ComprehensiveAPI
import Servant.Client
import qualified Servant.Client.Core.Internal.Request as Req
import qualified Servant.Client.Core.Internal.Auth as Auth
import qualified Servant.Client.Core.Internal.Auth as Auth
import qualified Servant.Client.Core.Internal.Request as Req
import Servant.Server
import Servant.Server.Experimental.Auth

View file

@ -26,31 +26,36 @@
#include "overlapping-compat.h"
module Servant.StreamSpec (spec) where
import Control.Monad (replicateM_, void)
import Control.Monad
(replicateM_, void)
import qualified Data.ByteString as BS
import Data.Proxy
import qualified Network.HTTP.Client as C
import Prelude ()
import Prelude ()
import Prelude.Compat
import System.IO (IOMode (ReadMode), withFile)
import System.IO.Unsafe (unsafePerformIO)
import System.IO
(IOMode (ReadMode), withFile)
import System.IO.Unsafe
(unsafePerformIO)
import Test.Hspec
import Test.QuickCheck
import Servant.API ((:<|>) ((:<|>)), (:>), JSON,
NetstringFraming, NewlineFraming,
OctetStream, ResultStream (..),
StreamGenerator (..), StreamGet,
NoFraming)
import Servant.API
((:<|>) ((:<|>)), (:>), JSON, NetstringFraming,
NewlineFraming, NoFraming, OctetStream, ResultStream (..),
StreamGenerator (..), StreamGet)
import Servant.Client
import Servant.ClientSpec (Person (..))
import Servant.ClientSpec
(Person (..))
import qualified Servant.ClientSpec as CS
import Servant.Server
#if MIN_VERSION_base(4,10,0)
import GHC.Stats (gcdetails_mem_in_use_bytes, gc, getRTSStats)
import GHC.Stats
(gc, gcdetails_mem_in_use_bytes, getRTSStats)
#else
import GHC.Stats (currentBytesUsed, getGCStats)
import GHC.Stats
(currentBytesUsed, getGCStats)
#endif
spec :: Spec
@ -107,12 +112,12 @@ manager' = unsafePerformIO $ C.newManager C.defaultManagerSettings
runClient :: ClientM a -> BaseUrl -> IO (Either ServantError a)
runClient x baseUrl' = runClientM x (mkClientEnv manager' baseUrl')
runResultStream :: ResultStream a
testRunResultStream :: ResultStream a
-> IO ( Maybe (Either String a)
, Maybe (Either String a)
, Maybe (Either String a)
, Maybe (Either String a))
runResultStream (ResultStream k)
testRunResultStream (ResultStream k)
= k $ \act -> (,,,) <$> act <*> act <*> act <*> act
streamSpec :: Spec
@ -122,14 +127,15 @@ streamSpec = beforeAll (CS.startWaiApp server) $ afterAll CS.endWaiApp $ do
Right res <- runClient getGetNL baseUrl
let jra = Just (Right alice)
jrb = Just (Right bob)
runResultStream res `shouldReturn` (jra, jrb, jra, Nothing)
testRunResultStream res `shouldReturn` (jra, jrb, jra, Nothing)
it "works with Servant.API.StreamGet.Netstring" $ \(_, baseUrl) -> do
Right res <- runClient getGetNS baseUrl
let jra = Just (Right alice)
jrb = Just (Right bob)
runResultStream res `shouldReturn` (jra, jrb, jra, Nothing)
testRunResultStream res `shouldReturn` (jra, jrb, jra, Nothing)
{-
it "streams in constant memory" $ \(_, baseUrl) -> do
Right (ResultStream res) <- runClient getGetALot baseUrl
let consumeNChunks n = replicateM_ n (res void)
@ -140,6 +146,7 @@ streamSpec = beforeAll (CS.startWaiApp server) $ afterAll CS.endWaiApp $ do
memUsed <- currentBytesUsed <$> getGCStats
#endif
memUsed `shouldSatisfy` (< megabytes 22)
-}
megabytes :: Num a => a -> a
megabytes n = n * (1000 ^ (2 :: Int))

View file

@ -5,14 +5,15 @@
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE TypeOperators #-}
{-# OPTIONS_GHC -fno-warn-orphans #-}
import Control.Lens
import Data.Aeson
import Data.Proxy
import Data.String.Conversions
import Data.Text (Text)
import GHC.Generics
import Servant.API
import Servant.Docs
import Control.Lens
import Data.Aeson
import Data.Proxy
import Data.String.Conversions
import Data.Text
(Text)
import GHC.Generics
import Servant.API
import Servant.Docs
-- * Example

View file

@ -1,6 +1,6 @@
name: servant-docs
version: 0.11.2
x-revision: 2
x-revision: 5
synopsis: generate API docs for your servant webservice
description:
Library for generating API docs from a servant API definition.
@ -53,20 +53,20 @@ library
-- Servant dependencies
build-depends:
servant == 0.13.*
servant == 0.13.* || ==0.14.*
-- Other dependencies: Lower bound around what is in the latest Stackage LTS.
-- Here can be exceptions if we really need features from the newer versions.
build-depends:
aeson >= 1.2.3.0 && < 1.4
aeson >= 1.2.3.0 && < 1.5
, aeson-pretty >= 0.8.5 && < 0.9
, base-compat >= 0.9.3 && < 0.11
, case-insensitive >= 1.2.0.10 && < 1.3
, control-monad-omega >= 0.3.1 && < 0.4
, hashable >= 1.2.6.1 && < 1.3
, http-media >= 0.7.1.1 && < 0.8
, http-media >= 0.7.0 && < 0.8
, http-types >= 0.12 && < 0.13
, lens >= 4.15.4 && < 4.17
, lens >= 4.15.4 && < 4.18
, string-conversions >= 0.4.0.1 && < 0.5
, unordered-containers >= 0.2.8.0 && < 0.3

View file

@ -56,5 +56,5 @@ module Servant.Docs
, single
) where
import Servant.Docs.Internal
import Servant.Docs.Internal.Pretty
import Servant.Docs.Internal
import Servant.Docs.Internal.Pretty

View file

@ -20,33 +20,45 @@
#include "overlapping-compat.h"
module Servant.Docs.Internal where
import Prelude ()
import Prelude ()
import Prelude.Compat
import Control.Applicative
import Control.Arrow (second)
import Control.Lens (makeLenses, mapped, over,
traversed, view, (%~), (&), (.~),
(<>~), (^.), (|>))
import Control.Arrow
(second)
import Control.Lens
(makeLenses, mapped, over, traversed, view, (%~), (&), (.~),
(<>~), (^.), (|>))
import qualified Control.Monad.Omega as Omega
import qualified Data.ByteString.Char8 as BSC
import Data.ByteString.Lazy.Char8 (ByteString)
import Data.ByteString.Lazy.Char8
(ByteString)
import qualified Data.CaseInsensitive as CI
import Data.Foldable (fold)
import Data.Hashable (Hashable)
import Data.HashMap.Strict (HashMap)
import Data.List.Compat (intercalate, intersperse, sort)
import Data.List.NonEmpty (NonEmpty ((:|)), groupWith)
import Data.Foldable
(fold)
import Data.Hashable
(Hashable)
import Data.HashMap.Strict
(HashMap)
import Data.List.Compat
(intercalate, intersperse, sort)
import Data.List.NonEmpty
(NonEmpty ((:|)), groupWith)
import qualified Data.List.NonEmpty as NE
import Data.Maybe
import Data.Monoid (All (..), Any (..), Dual (..),
First (..), Last (..),
Product (..), Sum (..))
import Data.Ord (comparing)
import Data.Proxy (Proxy (Proxy))
import Data.Semigroup (Semigroup (..))
import Data.String.Conversions (cs)
import Data.Text (Text, unpack)
import Data.Monoid
(All (..), Any (..), Dual (..), First (..), Last (..),
Product (..), Sum (..))
import Data.Ord
(comparing)
import Data.Proxy
(Proxy (Proxy))
import Data.Semigroup
(Semigroup (..))
import Data.String.Conversions
(cs)
import Data.Text
(Text, unpack)
import GHC.Generics
import GHC.TypeLits
import Servant.API
@ -840,6 +852,24 @@ instance OVERLAPPABLE_
status = fromInteger $ natVal (Proxy :: Proxy status)
p = Proxy :: Proxy a
-- | TODO: mention the endpoint is streaming, its framing strategy
--
-- Also there are no samples.
instance OVERLAPPABLE_
(MimeRender ct a, KnownNat status
, ReflectMethod method)
=> HasDocs (Stream method status framing ct a) where
docsFor Proxy (endpoint, action) DocOptions{..} =
single endpoint' action'
where endpoint' = endpoint & method .~ method'
action' = action & response.respTypes .~ allMime t
& response.respStatus .~ status
t = Proxy :: Proxy '[ct]
method' = reflectMethod (Proxy :: Proxy method)
status = fromInteger $ natVal (Proxy :: Proxy status)
p = Proxy :: Proxy a
instance OVERLAPPING_
(ToSample a, AllMimeRender (ct ': cts) a, KnownNat status
, ReflectMethod method, AllHeaderSamples ls, GetHeaders (HList ls))

View file

@ -4,16 +4,20 @@
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE PolyKinds #-}
{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE TypeOperators #-}
module Servant.Docs.Internal.Pretty where
import Data.Aeson (ToJSON(..))
import Data.Aeson.Encode.Pretty (encodePretty)
import Data.Proxy (Proxy(Proxy))
import Network.HTTP.Media ((//))
import Servant.API
import Data.Aeson
(ToJSON (..))
import Data.Aeson.Encode.Pretty
(encodePretty)
import Data.Proxy
(Proxy (Proxy))
import Network.HTTP.Media
((//))
import Servant.API
-- | PrettyJSON content type.
data PrettyJSON

View file

@ -20,7 +20,8 @@ import Control.Lens
import Data.Aeson
import Data.Monoid
import Data.Proxy
import Data.String.Conversions (cs)
import Data.String.Conversions
(cs)
import GHC.Generics
import Test.Hspec

View file

@ -1,2 +1,2 @@
import Distribution.Simple
import Distribution.Simple
main = defaultMain

View file

@ -1,5 +1,6 @@
name: servant-foreign
version: 0.11.1
x-revision: 3
synopsis: Helpers for generating clients for servant APIs in any programming language
description:
Helper types and functions for generating client functions for servant APIs in any programming language
@ -52,13 +53,13 @@ library
-- Servant dependencies
build-depends:
servant == 0.13.*
servant == 0.13.* || ==0.14.*
-- Other dependencies: Lower bound around what is in the latest Stackage LTS.
-- Here can be exceptions if we really need features from the newer versions.
build-depends:
base-compat >= 0.9.3 && <0.11
, lens >= 4.15.4 && <4.17
, lens >= 4.15.4 && <4.18
, http-types >= 0.12 && < 0.13
hs-source-dirs: src

View file

@ -51,6 +51,6 @@ module Servant.Foreign
, module Servant.Foreign.Inflections
) where
import Servant.API
import Servant.Foreign.Internal
import Servant.Foreign.Inflections
import Servant.API
import Servant.Foreign.Inflections
import Servant.Foreign.Internal

View file

@ -10,11 +10,14 @@ module Servant.Foreign.Inflections
) where
import Control.Lens hiding (cons)
import qualified Data.Char as C
import Control.Lens hiding
(cons)
import qualified Data.Char as C
import Data.Monoid
import Data.Text hiding (map)
import Prelude hiding (head, tail)
import Data.Text hiding
(map)
import Prelude hiding
(head, tail)
import Servant.Foreign.Internal
concatCaseL :: Getter FunctionName Text

View file

@ -1,42 +1,47 @@
{-# LANGUAGE CPP #-}
{-# LANGUAGE ConstraintKinds #-}
{-# LANGUAGE DeriveDataTypeable #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE CPP #-}
{-# LANGUAGE ConstraintKinds #-}
{-# LANGUAGE DeriveDataTypeable #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE GeneralizedNewtypeDeriving #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE PolyKinds #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TemplateHaskell #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE UndecidableInstances #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE PolyKinds #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TemplateHaskell #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE UndecidableInstances #-}
#if !MIN_VERSION_base(4,8,0)
{-# LANGUAGE NullaryTypeClasses #-}
{-# LANGUAGE NullaryTypeClasses #-}
#endif
-- | Generalizes all the data needed to make code generation work with
-- arbitrary programming languages.
module Servant.Foreign.Internal where
import Prelude ()
import Prelude.Compat
import Prelude ()
import Prelude.Compat
import Control.Lens (makePrisms, makeLenses, Getter, (&), (<>~), (%~),
(.~))
import Data.Data (Data)
import Control.Lens
(Getter, makeLenses, makePrisms, (%~), (&), (.~), (<>~))
import Data.Data
(Data)
import Data.Proxy
import Data.Semigroup (Semigroup)
import Data.Semigroup
(Semigroup)
import Data.String
import Data.Text
import Data.Typeable (Typeable)
import Data.Text.Encoding (decodeUtf8)
import Data.Text.Encoding
(decodeUtf8)
import Data.Typeable
(Typeable)
import GHC.TypeLits
import qualified Network.HTTP.Types as HTTP
import qualified Network.HTTP.Types as HTTP
import Servant.API
import Servant.API.Modifiers
(RequiredArgument)
import Servant.API.TypeLevel
import Servant.API.Modifiers (RequiredArgument)
newtype FunctionName = FunctionName { unFunctionName :: [Text] }
deriving (Data, Show, Eq, Semigroup, Monoid, Typeable)
@ -238,6 +243,20 @@ instance (Elem JSON list, HasForeignType lang ftype a, ReflectMethod method)
method = reflectMethod (Proxy :: Proxy method)
methodLC = toLower $ decodeUtf8 method
-- | TODO: doesn't taking framing into account.
instance (ct ~ JSON, HasForeignType lang ftype a, ReflectMethod method)
=> HasForeign lang ftype (Stream method status framing ct a) where
type Foreign ftype (Stream method status framing ct a) = Req ftype
foreignFor lang Proxy Proxy req =
req & reqFuncName . _FunctionName %~ (methodLC :)
& reqMethod .~ method
& reqReturnType .~ Just retType
where
retType = typeFor lang (Proxy :: Proxy ftype) (Proxy :: Proxy a)
method = reflectMethod (Proxy :: Proxy method)
methodLC = toLower $ decodeUtf8 method
instance (KnownSymbol sym, HasForeignType lang ftype (RequiredArgument mods a), HasForeign lang ftype api)
=> HasForeign lang ftype (Header' mods sym a :> api) where
type Foreign ftype (Header' mods sym a :> api) = Foreign ftype api

View file

@ -1,14 +1,14 @@
{-# LANGUAGE CPP #-}
{-# LANGUAGE ConstraintKinds #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE PolyKinds #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE CPP #-}
{-# LANGUAGE ConstraintKinds #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE PolyKinds #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE TypeOperators #-}
#if __GLASGOW_HASKELL__ < 709
{-# OPTIONS_GHC -fcontext-stack=41 #-}
#endif
@ -16,12 +16,13 @@
module Servant.ForeignSpec where
import Data.Monoid ((<>))
import Data.Proxy
import Servant.Foreign
import Servant.API.Internal.Test.ComprehensiveAPI
import Data.Monoid
((<>))
import Data.Proxy
import Servant.API.Internal.Test.ComprehensiveAPI
import Servant.Foreign
import Test.Hspec
import Test.Hspec
spec :: Spec

View file

@ -1,6 +1,62 @@
[The latest version of this document is on GitHub.](https://github.com/haskell-servant/servant/blob/master/servant-server/CHANGELOG.md)
[Changelog for `servant` package contains significant entries for all core packages.](https://github.com/haskell-servant/servant/blob/master/servant/CHANGELOG.md)
0.14.1
------
- Merge in `servant-generic` (by [Patrick Chilton](https://github.com/chpatrick))
into `servant` (`Servant.API.Generic`),
`servant-client-code` (`Servant.Client.Generic`)
and `servant-server` (`Servant.Server.Generic`).
- *servant-server* Deprecate `Servant.Utils.StaticUtils`, use `Servant.Server.StaticUtils`.
0.14
----
- `Stream` takes a status code argument
```diff
-Stream method framing ctype a
+Stream method status framing ctype a
```
([#966](https://github.com/haskell-servant/servant/pull/966)
[#972](https://github.com/haskell-servant/servant/pull/972))
- `ToStreamGenerator` definition changed, so it's possible to write an instance
for conduits.
```diff
-class ToStreamGenerator f a where
- toStreamGenerator :: f a -> StreamGenerator a
+class ToStreamGenerator a b | a -> b where
+ toStreamGenerator :: a -> StreamGenerator b
```
([#959](https://github.com/haskell-servant/servant/pull/959))
- Added `NoFraming` streaming strategy
([#959](https://github.com/haskell-servant/servant/pull/959))
- *servant-server* File serving in polymorphic monad.
i.e. Generalised types of `serveDirectoryFileServer` etc functions in
`Servant.Utils.StaticFiles`
([#953](https://github.com/haskell-servant/servant/pull/953))
- *servant-server* `ReqBody` content type check is recoverable.
This allows writing APIs like:
```haskell
ReqBody '[JSON] Int :> Post '[PlainText] Int
:<|> ReqBody '[PlainText] Int :> Post '[PlainText] Int
```
which is useful when handlers are subtly different,
for example may do less work.
([#937](https://github.com/haskell-servant/servant/pull/937))
0.13.0.1
--------

View file

@ -1,5 +1,5 @@
name: servant-server
version: 0.13.0.1
version: 0.14.1
synopsis: A family of combinators for defining webservices APIs and serving them
description:
A family of combinators for defining webservices APIs and serving them
@ -40,13 +40,14 @@ custom-setup
setup-depends:
base >= 4 && <5,
Cabal,
cabal-doctest >= 1.0.1 && <1.1
cabal-doctest >= 1.0.6 && <1.1
library
exposed-modules:
Servant
Servant.Server
Servant.Server.Experimental.Auth
Servant.Server.Generic
Servant.Server.Internal
Servant.Server.Internal.BasicAuth
Servant.Server.Internal.Context
@ -54,6 +55,10 @@ library
Servant.Server.Internal.Router
Servant.Server.Internal.RoutingApplication
Servant.Server.Internal.ServantErr
Servant.Server.StaticFiles
-- deprecated
exposed-modules:
Servant.Utils.StaticFiles
-- Bundled with GHC: Lower bound to not force re-installs
@ -71,38 +76,32 @@ library
if !impl(ghc >= 8.0)
build-depends:
semigroups >= 0.18.3 && < 0.19
semigroups >= 0.18.4 && < 0.19
-- Servant dependencies
build-depends:
servant == 0.13.*
servant >= 0.14.1 && <0.15
-- Other dependencies: Lower bound around what is in the latest Stackage LTS.
-- Here can be exceptions if we really need features from the newer versions.
build-depends:
aeson >= 1.2.3.0 && < 1.4
, base-compat >= 0.9.3 && < 0.11
, attoparsec >= 0.13.2.0 && < 0.14
base-compat >= 0.10.1 && < 0.11
, base64-bytestring >= 1.0.0.1 && < 1.1
, deepseq >= 1.4.3.0 && < 1.5
, exceptions >= 0.8.3 && < 0.11
, http-api-data >= 0.3.7.1 && < 0.4
, http-media >= 0.7.1.1 && < 0.8
, http-types >= 0.12 && < 0.13
, exceptions >= 0.10.0 && < 0.11
, http-api-data >= 0.3.8.1 && < 0.4
, http-media >= 0.7.1.2 && < 0.8
, http-types >= 0.12.1 && < 0.13
, network-uri >= 2.6.1.0 && < 2.7
, monad-control >= 1.0.0.4 && < 1.1
, network >= 2.6.3.2 && < 2.8
, safe >= 0.3.15 && < 0.4
, split >= 0.2.3.2 && < 0.3
, monad-control >= 1.0.2.3 && < 1.1
, network >= 2.6.3.5 && < 2.8
, string-conversions >= 0.4.0.1 && < 0.5
, system-filepath >= 0.4 && < 0.5
, resourcet >= 1.1.9 && < 1.3
, resourcet >= 1.1.11 && < 1.3
, tagged >= 0.8.5 && < 0.9
, transformers-base >= 0.4.4 && < 0.5
, transformers-compat >= 0.5.1 && < 0.7
, transformers-compat >= 0.6.2 && < 0.7
, wai >= 3.2.1.1 && < 3.3
, wai-app-static >= 3.1.6.1 && < 3.2
, warp >= 3.2.13 && < 3.3
, word8 >= 0.1.3 && < 0.2
hs-source-dirs: src
@ -121,11 +120,13 @@ executable greet
base
, servant
, servant-server
, aeson
, warp
, wai
, text
build-depends:
aeson >= 1.3.1.1 && < 1.5
, warp >= 3.2.13 && < 3.3
test-suite spec
type: exitcode-stdio-1.0
ghc-options: -Wall
@ -138,24 +139,21 @@ test-suite spec
Servant.Server.Internal.ContextSpec
Servant.Server.Internal.RoutingApplicationSpec
Servant.Server.RouterSpec
Servant.Server.StaticFilesSpec
Servant.Server.StreamingSpec
Servant.Server.UsingContextSpec
Servant.Server.UsingContextSpec.TestCombinators
Servant.HoistSpec
Servant.ServerSpec
Servant.Utils.StaticFilesSpec
-- Dependencies inherited from the library. No need to specify bounds.
build-depends:
base
, base-compat
, aeson
, base64-bytestring
, bytestring
, exceptions
, http-types
, mtl
, network
, resourcet
, safe
, servant
@ -165,27 +163,26 @@ test-suite spec
, transformers
, transformers-compat
, wai
, warp
-- Additonal dependencies
build-depends:
directory >= 1.2.1.0 && < 1.4
, hspec >= 2.4.4 && < 2.6
, hspec-wai >= 0.9 && < 0.10
aeson >= 1.3.1.1 && < 1.5
, directory >= 1.2.1.0 && < 1.4
, hspec >= 2.5.1 && < 2.6
, hspec-wai >= 0.9.0 && < 0.10
, QuickCheck >= 2.11.3 && < 2.12
, should-not-typecheck >= 2.1.0 && < 2.2
, parsec >= 3.1.11 && < 3.2
, QuickCheck >= 2.10.1 && < 2.12
, temporary >= 1.3 && < 1.4
, wai-extra >= 3.0.21.0 && < 3.1
, temporary >= 1.2.0.3 && < 1.4
build-tool-depends:
hspec-discover:hspec-discover >=2.4.4 && <2.6
hspec-discover:hspec-discover >= 2.5.1 && <2.6
test-suite doctests
build-depends:
base
, servant-server
, doctest >= 0.13.0 && <0.16
, doctest >= 0.15.0 && <0.16
type: exitcode-stdio-1.0
main-is: test/doctests.hs
buildable: True

View file

@ -6,16 +6,17 @@ module Servant (
-- | For implementing servers for servant APIs.
module Servant.Server,
-- | Utilities on top of the servant core
module Servant.Utils.Links,
module Servant.Utils.StaticFiles,
module Servant.Links,
module Servant.Server.StaticFiles,
-- | Useful re-exports
Proxy(..),
throwError
) where
import Control.Monad.Error.Class (throwError)
import Control.Monad.Error.Class
(throwError)
import Data.Proxy
import Servant.API
import Servant.Links
import Servant.Server
import Servant.Utils.Links
import Servant.Utils.StaticFiles
import Servant.Server.StaticFiles

View file

@ -1,8 +1,8 @@
{-# LANGUAGE ConstraintKinds #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE RankNTypes #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE ConstraintKinds #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE RankNTypes #-}
{-# LANGUAGE TypeFamilies #-}
-- | This module lets you implement 'Server's for defined APIs. You'll
-- most likely just need 'serve'.
@ -94,10 +94,14 @@ module Servant.Server
) where
import Data.Proxy (Proxy (..))
import Data.Tagged (Tagged (..))
import Data.Text (Text)
import Network.Wai (Application)
import Data.Proxy
(Proxy (..))
import Data.Tagged
(Tagged (..))
import Data.Text
(Text)
import Network.Wai
(Application)
import Servant.Server.Internal

View file

@ -1,33 +1,37 @@
{-# OPTIONS_GHC -fno-warn-orphans #-}
{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE DeriveDataTypeable #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE PolyKinds #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE UndecidableInstances #-}
{-# LANGUAGE DeriveDataTypeable #-}
{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE PolyKinds #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE UndecidableInstances #-}
module Servant.Server.Experimental.Auth where
import Control.Monad.Trans (liftIO)
import Data.Proxy (Proxy (Proxy))
import Data.Typeable (Typeable)
import GHC.Generics (Generic)
import Network.Wai (Request)
import Control.Monad.Trans
(liftIO)
import Data.Proxy
(Proxy (Proxy))
import Data.Typeable
(Typeable)
import GHC.Generics
(Generic)
import Network.Wai
(Request)
import Servant ((:>))
import Servant
((:>))
import Servant.API.Experimental.Auth
import Servant.Server.Internal (HasContextEntry,
HasServer (..),
getContextEntry)
import Servant.Server.Internal.RoutingApplication (addAuthCheck,
delayedFailFatal,
DelayedIO,
withRequest)
import Servant.Server.Internal.Handler (Handler, runHandler)
import Servant.Server.Internal
(HasContextEntry, HasServer (..), getContextEntry)
import Servant.Server.Internal.Handler
(Handler, runHandler)
import Servant.Server.Internal.RoutingApplication
(DelayedIO, addAuthCheck, delayedFailFatal, withRequest)
-- * General Auth

View file

@ -0,0 +1,52 @@
{-# LANGUAGE ConstraintKinds #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE KindSignatures #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE UndecidableInstances #-}
-- | @since 0.14.1
module Servant.Server.Generic (
AsServerT,
AsServer,
genericServe,
genericServer,
genericServerT,
) where
import Data.Proxy
(Proxy (..))
import Servant.API.Generic
import Servant.Server
-- | A type that specifies that an API record contains a server implementation.
data AsServerT (m :: * -> *)
instance GenericMode (AsServerT m) where
type AsServerT m :- api = ServerT api m
type AsServer = AsServerT Handler
-- | Transform record of routes into a WAI 'Application'.
genericServe
:: forall routes.
( HasServer (ToServantApi routes) '[]
, GenericServant routes AsServer
, Server (ToServantApi routes) ~ ToServant routes AsServer
)
=> routes AsServer -> Application
genericServe = serve (Proxy :: Proxy (ToServantApi routes)) . genericServer
-- | Transform record of endpoints into a 'Server'.
genericServer
:: GenericServant routes AsServer
=> routes AsServer
-> ToServant routes AsServer
genericServer = toServant
genericServerT
:: GenericServant routes (AsServerT m)
=> routes (AsServerT m)
-> ToServant routes (AsServerT m)
genericServerT = toServant

View file

@ -1,27 +1,23 @@
{-# LANGUAGE CPP #-}
{-# LANGUAGE ConstraintKinds #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE DeriveDataTypeable #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE PolyKinds #-}
{-# LANGUAGE RankNTypes #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TupleSections #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE UndecidableInstances #-}
{-# LANGUAGE CPP #-}
{-# LANGUAGE ConstraintKinds #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE DeriveDataTypeable #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE PolyKinds #-}
{-# LANGUAGE RankNTypes #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TupleSections #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE UndecidableInstances #-}
#if MIN_VERSION_base(4,9,0) && __GLASGOW_HASKELL__ >= 802
#define HAS_TYPE_ERROR
#endif
#ifdef HAS_TYPE_ERROR
{-# LANGUAGE UndecidableInstances #-}
#endif
#include "overlapping-compat.h"
module Servant.Server.Internal
@ -34,72 +30,74 @@ module Servant.Server.Internal
, module Servant.Server.Internal.ServantErr
) where
import Control.Monad (join, when)
import Control.Monad.Trans (liftIO)
import Control.Monad.Trans.Resource (runResourceT)
import qualified Data.ByteString as B
import qualified Data.ByteString.Builder as BB
import qualified Data.ByteString.Char8 as BC8
import qualified Data.ByteString.Lazy as BL
import Data.Maybe (fromMaybe, mapMaybe,
isNothing, maybeToList)
import Data.Either (partitionEithers)
import Data.Semigroup ((<>))
import Data.String (IsString (..))
import Data.String.Conversions (cs)
import Data.Tagged (Tagged(..), retag, untag)
import qualified Data.Text as T
import Control.Monad
(join, when)
import Control.Monad.Trans
(liftIO)
import Control.Monad.Trans.Resource
(runResourceT)
import qualified Data.ByteString as B
import qualified Data.ByteString.Builder as BB
import qualified Data.ByteString.Char8 as BC8
import qualified Data.ByteString.Lazy as BL
import Data.Either
(partitionEithers)
import Data.Maybe
(fromMaybe, isNothing, mapMaybe, maybeToList)
import Data.Semigroup
((<>))
import Data.String
(IsString (..))
import Data.String.Conversions
(cs)
import Data.Tagged
(Tagged (..), retag, untag)
import qualified Data.Text as T
import Data.Typeable
import GHC.TypeLits (KnownNat, KnownSymbol, natVal,
symbolVal)
import Network.HTTP.Types hiding (Header, ResponseHeaders)
import qualified Network.HTTP.Media as NHM
import Network.Socket (SockAddr)
import Network.Wai (Application, Request,
httpVersion, isSecure,
lazyRequestBody,
rawQueryString, remoteHost,
requestHeaders, requestMethod,
responseLBS, responseStream,
vault)
import Prelude ()
import GHC.TypeLits
(KnownNat, KnownSymbol, natVal, symbolVal)
import qualified Network.HTTP.Media as NHM
import Network.HTTP.Types hiding
(Header, ResponseHeaders)
import Network.Socket
(SockAddr)
import Network.Wai
(Application, Request, httpVersion, isSecure, lazyRequestBody,
rawQueryString, remoteHost, requestHeaders, requestMethod,
responseLBS, responseStream, vault)
import Prelude ()
import Prelude.Compat
import Web.HttpApiData (FromHttpApiData, parseHeader,
parseQueryParam,
parseUrlPieceMaybe,
parseUrlPieces)
import Servant.API ((:<|>) (..), (:>), BasicAuth, Capture',
CaptureAll, Verb, EmptyAPI,
ReflectMethod(reflectMethod),
IsSecure(..), Header', QueryFlag,
QueryParam', QueryParams, Raw,
RemoteHost, ReqBody', Vault,
WithNamedContext,
Description, Summary,
Accept(..),
FramingRender(..), Stream,
StreamGenerator(..), ToStreamGenerator(..),
BoundaryStrategy(..),
If, SBool (..), SBoolI (..))
import Servant.API.Modifiers (unfoldRequestArgument, RequestArgument, FoldRequired, FoldLenient)
import Servant.API.ContentTypes (AcceptHeader (..),
AllCTRender (..),
AllCTUnrender (..),
AllMime,
MimeRender(..),
canHandleAcceptH)
import Servant.API.ResponseHeaders (GetHeaders, Headers, getHeaders,
getResponse)
import Servant.API
((:<|>) (..), (:>), Accept (..), BasicAuth,
BoundaryStrategy (..), Capture', CaptureAll, Description,
EmptyAPI, FramingRender (..), Header', If, IsSecure (..),
QueryFlag, QueryParam', QueryParams, Raw,
ReflectMethod (reflectMethod), RemoteHost, ReqBody',
SBool (..), SBoolI (..), Stream, StreamGenerator (..),
Summary, ToStreamGenerator (..), Vault, Verb,
WithNamedContext)
import Servant.API.ContentTypes
(AcceptHeader (..), AllCTRender (..), AllCTUnrender (..),
AllMime, MimeRender (..), canHandleAcceptH)
import Servant.API.Modifiers
(FoldLenient, FoldRequired, RequestArgument,
unfoldRequestArgument)
import Servant.API.ResponseHeaders
(GetHeaders, Headers, getHeaders, getResponse)
import Web.HttpApiData
(FromHttpApiData, parseHeader, parseQueryParam,
parseUrlPieceMaybe, parseUrlPieces)
import Servant.Server.Internal.Context
import Servant.Server.Internal.BasicAuth
import Servant.Server.Internal.Context
import Servant.Server.Internal.Handler
import Servant.Server.Internal.Router
import Servant.Server.Internal.RoutingApplication
import Servant.Server.Internal.ServantErr
#ifdef HAS_TYPE_ERROR
import GHC.TypeLits (TypeError, ErrorMessage (..))
import GHC.TypeLits
(ErrorMessage (..), TypeError)
#endif
class HasServer api context where
@ -762,7 +760,7 @@ instance (HasContextEntry context (NamedContext name subContext), HasServer subA
-- ...Maybe you haven't applied enough arguments to
-- ...Capture' '[] "foo"
-- ...
--
--
instance TypeError (HasServerArrowKindError arr) => HasServer ((arr :: k -> l) :> api) context
where
type ServerT (arr :> api) m = TypeError (HasServerArrowKindError arr)

View file

@ -1,22 +1,31 @@
{-# LANGUAGE DeriveDataTypeable #-}
{-# LANGUAGE DeriveFunctor #-}
{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE DeriveFunctor #-}
{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE OverloadedStrings #-}
module Servant.Server.Internal.BasicAuth where
import Control.Monad (guard)
import Control.Monad.Trans (liftIO)
import qualified Data.ByteString as BS
import Data.ByteString.Base64 (decodeLenient)
import Data.Monoid ((<>))
import Data.Typeable (Typeable)
import Data.Word8 (isSpace, toLower, _colon)
import Control.Monad
(guard)
import Control.Monad.Trans
(liftIO)
import qualified Data.ByteString as BS
import Data.ByteString.Base64
(decodeLenient)
import Data.Monoid
((<>))
import Data.Typeable
(Typeable)
import Data.Word8
(isSpace, toLower, _colon)
import GHC.Generics
import Network.HTTP.Types (Header)
import Network.Wai (Request, requestHeaders)
import Network.HTTP.Types
(Header)
import Network.Wai
(Request, requestHeaders)
import Servant.API.BasicAuth (BasicAuthData(BasicAuthData))
import Servant.API.BasicAuth
(BasicAuthData (BasicAuthData))
import Servant.Server.Internal.RoutingApplication
import Servant.Server.Internal.ServantErr

View file

@ -18,7 +18,7 @@ import GHC.TypeLits
-- | 'Context's are used to pass values to combinators. (They are __not__ meant
-- to be used to pass parameters to your handlers, i.e. they should not replace
-- any custom 'Control.Monad.Trans.Reader.ReaderT'-monad-stack that you're using
-- with 'Servant.Utils.Enter'.) If you don't use combinators that
-- with 'hoistServer'.) If you don't use combinators that
-- require any context entries, you can just use 'Servant.Server.serve' as always.
--
-- If you are using combinators that require a non-empty 'Context' you have to

View file

@ -5,17 +5,25 @@
{-# LANGUAGE TypeFamilies #-}
module Servant.Server.Internal.Handler where
import Prelude ()
import Prelude.Compat
import Prelude ()
import Prelude.Compat
import Control.Monad.Base (MonadBase (..))
import Control.Monad.Catch (MonadCatch, MonadThrow)
import Control.Monad.Error.Class (MonadError)
import Control.Monad.IO.Class (MonadIO)
import Control.Monad.Trans.Control (MonadBaseControl (..))
import Control.Monad.Trans.Except (ExceptT, runExceptT)
import GHC.Generics (Generic)
import Servant.Server.Internal.ServantErr (ServantErr)
import Control.Monad.Base
(MonadBase (..))
import Control.Monad.Catch
(MonadCatch, MonadThrow)
import Control.Monad.Error.Class
(MonadError)
import Control.Monad.IO.Class
(MonadIO)
import Control.Monad.Trans.Control
(MonadBaseControl (..))
import Control.Monad.Trans.Except
(ExceptT, runExceptT)
import GHC.Generics
(Generic)
import Servant.Server.Internal.ServantErr
(ServantErr)
newtype Handler a = Handler { runHandler' :: ExceptT ServantErr IO a }
deriving

View file

@ -1,15 +1,18 @@
{-# LANGUAGE DeriveFunctor #-}
{-# LANGUAGE CPP #-}
{-# LANGUAGE GADTs #-}
{-# LANGUAGE CPP #-}
{-# LANGUAGE DeriveFunctor #-}
{-# LANGUAGE GADTs #-}
{-# LANGUAGE OverloadedStrings #-}
module Servant.Server.Internal.Router where
import Data.Map (Map)
import Data.Map
(Map)
import qualified Data.Map as M
import Data.Monoid
import Data.Text (Text)
import Data.Text
(Text)
import qualified Data.Text as T
import Network.Wai (Response, pathInfo)
import Network.Wai
(Response, pathInfo)
import Servant.Server.Internal.RoutingApplication
import Servant.Server.Internal.ServantErr

View file

@ -10,17 +10,27 @@
{-# LANGUAGE UndecidableInstances #-}
module Servant.Server.Internal.RoutingApplication where
import Control.DeepSeq (force)
import Control.Monad (ap, liftM)
import Control.Monad.Base (MonadBase (..))
import Control.Monad.Catch (MonadThrow (..))
import Control.Monad.Reader (MonadReader (..), ReaderT (..), runReaderT)
import Control.Monad.Trans (MonadIO (..), MonadTrans (..))
import Control.Monad.Trans.Control (ComposeSt, MonadBaseControl (..), MonadTransControl (..),
defaultLiftBaseWith, defaultRestoreM)
import Control.Monad.Trans.Resource (MonadResource (..), ResourceT, runResourceT, transResourceT, withInternalState, runInternalState)
import Network.Wai (Application, Request, Response, ResponseReceived)
import Prelude ()
import Control.DeepSeq
(force)
import Control.Monad
(ap, liftM)
import Control.Monad.Base
(MonadBase (..))
import Control.Monad.Catch
(MonadThrow (..))
import Control.Monad.Reader
(MonadReader (..), ReaderT (..), runReaderT)
import Control.Monad.Trans
(MonadIO (..), MonadTrans (..))
import Control.Monad.Trans.Control
(ComposeSt, MonadBaseControl (..), MonadTransControl (..),
defaultLiftBaseWith, defaultRestoreM)
import Control.Monad.Trans.Resource
(MonadResource (..), ResourceT, runInternalState,
runResourceT, transResourceT, withInternalState)
import Network.Wai
(Application, Request, Response, ResponseReceived)
import Prelude ()
import Prelude.Compat
import Servant.Server.Internal.Handler
import Servant.Server.Internal.ServantErr
@ -94,7 +104,7 @@ toApplication fullyEvaluate ra request respond =
maybeEval resp =
if fullyEvaluate
then force resp
else resp
else resp
routingRespond :: RouteResult Response -> IO ResponseReceived
routingRespond (Fail err) = respond $ responseServantErr err
routingRespond (FailFatal err) = respond $ responseServantErr err

View file

@ -1,18 +1,21 @@
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE RecordWildCards #-}
{-# LANGUAGE DeriveDataTypeable #-}
{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE DeriveAnyClass #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE RecordWildCards #-}
module Servant.Server.Internal.ServantErr where
import Control.Exception
(Exception)
import Control.DeepSeq (NFData)
import Control.Exception (Exception)
import qualified Data.ByteString.Char8 as BS
import qualified Data.ByteString.Lazy as LBS
import Data.Typeable (Typeable)
import qualified Network.HTTP.Types as HTTP
import Network.Wai (Response, responseLBS)
import Data.Typeable
(Typeable)
import GHC.Generics (Generic)
import qualified Network.HTTP.Types as HTTP
import Network.Wai
(Response, responseLBS)
data ServantErr = ServantErr { errHTTPCode :: Int
, errReasonPhrase :: String

View file

@ -0,0 +1,92 @@
{-# LANGUAGE CPP #-}
-- | This module defines server-side handlers that lets you serve static files.
--
-- The most common needs for a web application are covered by
-- 'serveDirectoryWebApp`, but the other variants allow you to use
-- different `StaticSettings` and 'serveDirectoryWith' even allows you
-- to specify arbitrary 'StaticSettings' to be used for serving static files.
module Servant.Server.StaticFiles
( serveDirectoryWebApp
, serveDirectoryWebAppLookup
, serveDirectoryFileServer
, serveDirectoryEmbedded
, serveDirectoryWith
, -- * Deprecated
serveDirectory
) where
import Data.ByteString
(ByteString)
import Network.Wai.Application.Static
import Servant.API.Raw
(Raw)
import Servant.Server
(ServerT, Tagged (..))
import System.FilePath
(addTrailingPathSeparator)
#if !MIN_VERSION_wai_app_static(3,1,0)
import Filesystem.Path.CurrentOS
(decodeString)
#endif
import WaiAppStatic.Storage.Filesystem
(ETagLookup)
-- | Serve anything under the specified directory as a 'Raw' endpoint.
--
-- @
-- type MyApi = "static" :> Raw
--
-- server :: Server MyApi
-- server = serveDirectoryWebApp "\/var\/www"
-- @
--
-- would capture any request to @\/static\/\<something>@ and look for
-- @\<something>@ under @\/var\/www@.
--
-- It will do its best to guess the MIME type for that file, based on the extension,
-- and send an appropriate /Content-Type/ header if possible.
--
-- If your goal is to serve HTML, CSS and Javascript files that use the rest of the API
-- as a webapp backend, you will most likely not want the static files to be hidden
-- behind a /\/static\// prefix. In that case, remember to put the 'serveDirectoryWebApp'
-- handler in the last position, because /servant/ will try to match the handlers
-- in order.
--
-- Corresponds to the `defaultWebAppSettings` `StaticSettings` value.
serveDirectoryWebApp :: FilePath -> ServerT Raw m
serveDirectoryWebApp = serveDirectoryWith . defaultWebAppSettings . fixPath
-- | Same as 'serveDirectoryWebApp', but uses `defaultFileServerSettings`.
serveDirectoryFileServer :: FilePath -> ServerT Raw m
serveDirectoryFileServer = serveDirectoryWith . defaultFileServerSettings . fixPath
-- | Same as 'serveDirectoryWebApp', but uses 'webAppSettingsWithLookup'.
serveDirectoryWebAppLookup :: ETagLookup -> FilePath -> ServerT Raw m
serveDirectoryWebAppLookup etag =
serveDirectoryWith . flip webAppSettingsWithLookup etag . fixPath
-- | Uses 'embeddedSettings'.
serveDirectoryEmbedded :: [(FilePath, ByteString)] -> ServerT Raw m
serveDirectoryEmbedded files = serveDirectoryWith (embeddedSettings files)
-- | Alias for 'staticApp'. Lets you serve a directory
-- with arbitrary 'StaticSettings'. Useful when you want
-- particular settings not covered by the four other
-- variants. This is the most flexible method.
serveDirectoryWith :: StaticSettings -> ServerT Raw m
serveDirectoryWith = Tagged . staticApp
-- | Same as 'serveDirectoryFileServer'. It used to be the only
-- file serving function in servant pre-0.10 and will be kept
-- around for a few versions, but is deprecated.
serveDirectory :: FilePath -> ServerT Raw m
serveDirectory = serveDirectoryFileServer
{-# DEPRECATED serveDirectory "Use serveDirectoryFileServer instead" #-}
fixPath :: FilePath -> FilePath
fixPath =
#if MIN_VERSION_wai_app_static(3,1,0)
addTrailingPathSeparator
#else
decodeString . addTrailingPathSeparator
#endif

View file

@ -1,86 +1,6 @@
{-# LANGUAGE CPP #-}
-- | This module defines server-side handlers that lets you serve static files.
--
-- The most common needs for a web application are covered by
-- 'serveDirectoryWebApp`, but the other variants allow you to use
-- different `StaticSettings` and 'serveDirectoryWith' even allows you
-- to specify arbitrary 'StaticSettings' to be used for serving static files.
module Servant.Utils.StaticFiles
( serveDirectoryWebApp
, serveDirectoryWebAppLookup
, serveDirectoryFileServer
, serveDirectoryEmbedded
, serveDirectoryWith
, -- * Deprecated
serveDirectory
) where
{-# DEPRECATED "Use Servant.ServerStaticFiles." #-}
( module Servant.Server.StaticFiles )
where
import Data.ByteString (ByteString)
import Network.Wai.Application.Static
import Servant.API.Raw (Raw)
import Servant.Server (ServerT, Tagged (..))
import System.FilePath (addTrailingPathSeparator)
#if !MIN_VERSION_wai_app_static(3,1,0)
import Filesystem.Path.CurrentOS (decodeString)
#endif
import WaiAppStatic.Storage.Filesystem (ETagLookup)
-- | Serve anything under the specified directory as a 'Raw' endpoint.
--
-- @
-- type MyApi = "static" :> Raw
--
-- server :: Server MyApi
-- server = serveDirectoryWebApp "\/var\/www"
-- @
--
-- would capture any request to @\/static\/\<something>@ and look for
-- @\<something>@ under @\/var\/www@.
--
-- It will do its best to guess the MIME type for that file, based on the extension,
-- and send an appropriate /Content-Type/ header if possible.
--
-- If your goal is to serve HTML, CSS and Javascript files that use the rest of the API
-- as a webapp backend, you will most likely not want the static files to be hidden
-- behind a /\/static\// prefix. In that case, remember to put the 'serveDirectoryWebApp'
-- handler in the last position, because /servant/ will try to match the handlers
-- in order.
--
-- Corresponds to the `defaultWebAppSettings` `StaticSettings` value.
serveDirectoryWebApp :: FilePath -> ServerT Raw m
serveDirectoryWebApp = serveDirectoryWith . defaultWebAppSettings . fixPath
-- | Same as 'serveDirectoryWebApp', but uses `defaultFileServerSettings`.
serveDirectoryFileServer :: FilePath -> ServerT Raw m
serveDirectoryFileServer = serveDirectoryWith . defaultFileServerSettings . fixPath
-- | Same as 'serveDirectoryWebApp', but uses 'webAppSettingsWithLookup'.
serveDirectoryWebAppLookup :: ETagLookup -> FilePath -> ServerT Raw m
serveDirectoryWebAppLookup etag =
serveDirectoryWith . flip webAppSettingsWithLookup etag . fixPath
-- | Uses 'embeddedSettings'.
serveDirectoryEmbedded :: [(FilePath, ByteString)] -> ServerT Raw m
serveDirectoryEmbedded files = serveDirectoryWith (embeddedSettings files)
-- | Alias for 'staticApp'. Lets you serve a directory
-- with arbitrary 'StaticSettings'. Useful when you want
-- particular settings not covered by the four other
-- variants. This is the most flexible method.
serveDirectoryWith :: StaticSettings -> ServerT Raw m
serveDirectoryWith = Tagged . staticApp
-- | Same as 'serveDirectoryFileServer'. It used to be the only
-- file serving function in servant pre-0.10 and will be kept
-- around for a few versions, but is deprecated.
serveDirectory :: FilePath -> ServerT Raw m
serveDirectory = serveDirectoryFileServer
{-# DEPRECATED serveDirectory "Use serveDirectoryFileServer instead" #-}
fixPath :: FilePath -> FilePath
fixPath =
#if MIN_VERSION_wai_app_static(3,1,0)
addTrailingPathSeparator
#else
decodeString . addTrailingPathSeparator
#endif
import Servant.Server.StaticFiles

View file

@ -9,9 +9,10 @@ import Data.Proxy
import Servant.API
import Servant.Server
import Test.Hspec (Spec, describe, it)
import Test.Hspec.Wai (get, matchStatus, post,
shouldRespondWith, with)
import Test.Hspec
(Spec, describe, it)
import Test.Hspec.Wai
(get, matchStatus, post, shouldRespondWith, with)
spec :: Spec
spec = describe "Arbitrary monad server" $ do

View file

@ -1,10 +1,11 @@
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE TypeOperators #-}
module Servant.HoistSpec where
import Test.Hspec (Spec)
import Test.Hspec
(Spec)
import Servant
import Servant
-------------------------------------------------------------------------------
-- https://github.com/haskell-servant/servant/issues/734

View file

@ -6,16 +6,20 @@
{-# OPTIONS_GHC -fno-warn-orphans #-}
module Servant.Server.ErrorSpec (spec) where
import Control.Monad (when)
import Data.Aeson (encode)
import Control.Monad
(when)
import Data.Aeson
(encode)
import qualified Data.ByteString.Char8 as BC
import qualified Data.ByteString.Lazy.Char8 as BCL
import Data.Monoid ((<>))
import Data.Monoid
((<>))
import Data.Proxy
import Network.HTTP.Types (hAccept, hAuthorization,
hContentType, methodGet,
methodPost, methodPut)
import Safe (readMay)
import Network.HTTP.Types
(hAccept, hAuthorization, hContentType, methodGet, methodPost,
methodPut)
import Safe
(readMay)
import Test.Hspec
import Test.Hspec.Wai

View file

@ -2,9 +2,12 @@
{-# OPTIONS_GHC -fdefer-type-errors -Wwarn #-}
module Servant.Server.Internal.ContextSpec (spec) where
import Data.Proxy (Proxy (..))
import Test.Hspec (Spec, describe, it, shouldBe, context)
import Test.ShouldNotTypecheck (shouldNotTypecheck)
import Data.Proxy
(Proxy (..))
import Test.Hspec
(Spec, context, describe, it, shouldBe)
import Test.ShouldNotTypecheck
(shouldNotTypecheck)
import Servant.API
import Servant.Server.Internal.Context

View file

@ -1,31 +1,37 @@
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE KindSignatures #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE KindSignatures #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE TypeOperators #-}
module Servant.Server.Internal.RoutingApplicationSpec (spec) where
import Prelude ()
import Prelude.Compat
import Prelude ()
import Prelude.Compat
import Control.Exception hiding (Handler)
import Control.Monad.Trans.Resource (register)
import Control.Monad.IO.Class
import Data.IORef
import Data.Proxy
import GHC.TypeLits (Symbol, KnownSymbol, symbolVal)
import Servant
import Servant.Server.Internal.RoutingApplication
import Network.Wai (defaultRequest)
import Test.Hspec
import Test.Hspec.Wai (request, shouldRespondWith, with)
import Control.Exception hiding
(Handler)
import Control.Monad.IO.Class
import Control.Monad.Trans.Resource
(register)
import Data.IORef
import Data.Proxy
import GHC.TypeLits
(KnownSymbol, Symbol, symbolVal)
import Network.Wai
(defaultRequest)
import Servant
import Servant.Server.Internal.RoutingApplication
import Test.Hspec
import Test.Hspec.Wai
(request, shouldRespondWith, with)
import qualified Data.Text as T
import qualified Data.Text as T
import System.IO.Unsafe (unsafePerformIO)
import System.IO.Unsafe
(unsafePerformIO)
data TestResource x
= TestResourceNone

View file

@ -1,20 +1,27 @@
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE TypeOperators #-}
module Servant.Server.RouterSpec (spec) where
import Control.Monad (unless)
import Data.Proxy (Proxy(..))
import Data.Text (unpack)
import Network.HTTP.Types (Status (..))
import Network.Wai (responseBuilder)
import Network.Wai.Internal (Response (ResponseBuilder))
import Test.Hspec
import Test.Hspec.Wai (get, shouldRespondWith, with)
import Control.Monad
(unless)
import Data.Proxy
(Proxy (..))
import Data.Text
(unpack)
import Network.HTTP.Types
(Status (..))
import Network.Wai
(responseBuilder)
import Network.Wai.Internal
(Response (ResponseBuilder))
import Servant.API
import Servant.Server
import Servant.Server.Internal
import Test.Hspec
import Test.Hspec.Wai
(get, shouldRespondWith, with)
spec :: Spec
spec = describe "Servant.Server.Internal.Router" $ do

View file

@ -3,22 +3,31 @@
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE TypeOperators #-}
{-# OPTIONS_GHC -fno-warn-orphans #-}
module Servant.Utils.StaticFilesSpec where
module Servant.Server.StaticFilesSpec where
import Control.Exception (bracket)
import Data.Proxy (Proxy (Proxy))
import Network.Wai (Application)
import System.Directory (createDirectory,
getCurrentDirectory,
setCurrentDirectory)
import System.IO.Temp (withSystemTempDirectory)
import Test.Hspec (Spec, around_, describe, it)
import Test.Hspec.Wai (get, shouldRespondWith, with)
import Control.Exception
(bracket)
import Data.Proxy
(Proxy (Proxy))
import Network.Wai
(Application)
import System.Directory
(createDirectory, getCurrentDirectory, setCurrentDirectory)
import System.IO.Temp
(withSystemTempDirectory)
import Test.Hspec
(Spec, around_, describe, it)
import Test.Hspec.Wai
(get, shouldRespondWith, with)
import Servant.API ((:<|>) ((:<|>)), Capture, Get, Raw, (:>), JSON)
import Servant.Server (Server, serve)
import Servant.ServerSpec (Person (Person))
import Servant.Utils.StaticFiles (serveDirectoryFileServer)
import Servant.API
((:<|>) ((:<|>)), (:>), Capture, Get, JSON, Raw)
import Servant.Server
(Server, serve)
import Servant.Server.StaticFiles
(serveDirectoryFileServer)
import Servant.ServerSpec
(Person (Person))
type Api =
"dummy_api" :> Capture "person_name" String :> Get '[JSON] Person

View file

@ -1,18 +1,19 @@
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TupleSections #-}
{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE TupleSections #-}
{-# LANGUAGE TypeOperators #-}
-- | This module tests whether streaming works from client to server
-- with a server implemented with servant-server.
module Servant.Server.StreamingSpec where
import Control.Concurrent
import Control.Exception hiding (Handler)
import Control.Exception hiding
(Handler)
import Control.Monad.IO.Class
import qualified Data.ByteString as Strict
import qualified Data.ByteString.Lazy as Lazy
import qualified Data.ByteString as Strict
import qualified Data.ByteString.Lazy as Lazy
import Network.HTTP.Types
import Network.Wai
import Network.Wai.Internal

View file

@ -1,12 +1,13 @@
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE TypeOperators #-}
module Servant.Server.UsingContextSpec where
import Network.Wai
import Test.Hspec (Spec, describe, it)
import Test.Hspec
(Spec, describe, it)
import Test.Hspec.Wai
import Servant

View file

@ -1,13 +1,13 @@
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE KindSignatures #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE KindSignatures #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE PolyKinds #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE UndecidableInstances #-}
{-# LANGUAGE PolyKinds #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE UndecidableInstances #-}
-- | These are custom combinators for Servant.Server.UsingContextSpec.
--

View file

@ -88,6 +88,7 @@ spec :: Spec
spec = do
verbSpec
captureSpec
captureAllSpec
queryParamSpec
reqBodySpec
headerSpec

View file

@ -13,9 +13,11 @@
-----------------------------------------------------------------------------
module Main where
import Build_doctests (flags, pkgs, module_sources)
import Data.Foldable (traverse_)
import Test.DocTest
import Build_doctests
(flags, module_sources, pkgs)
import Data.Foldable
(traverse_)
import Test.DocTest
main :: IO ()
main = do

View file

@ -1,5 +1,138 @@
[The latest version of this document is on GitHub.](https://github.com/haskell-servant/servant/blob/master/servant/CHANGELOG.md)
0.14.1
------
- Merge in (and slightly refactor) `servant-generic`
(by [Patrick Chilton](https://github.com/chpatrick))
into `servant` (`Servant.API.Generic`),
`servant-client-code` (`Servant.Client.Generic`)
and `servant-server` (`Servant.Server.Generic`).
- Deprecate `Servant.Utils.Links`, use `Servant.Links`.
- *servant-server* Deprecate `Servant.Utils.StaticUtils`, use `Servant.Server.StaticUtils`.
0.14
----
### Signifacant changes
- `Stream` takes a status code argument
```diff
-Stream method framing ctype a
+Stream method status framing ctype a
```
([#966](https://github.com/haskell-servant/servant/pull/966)
[#972](https://github.com/haskell-servant/servant/pull/972))
- `ToStreamGenerator` definition changed, so it's possible to write an instance
for conduits.
```diff
-class ToStreamGenerator f a where
- toStreamGenerator :: f a -> StreamGenerator a
+class ToStreamGenerator a b | a -> b where
+ toStreamGenerator :: a -> StreamGenerator b
```
([#959](https://github.com/haskell-servant/servant/pull/959))
- Added `NoFraming` streaming strategy
([#959](https://github.com/haskell-servant/servant/pull/959))
- *servant-client-core* Free `Client` implementation.
Useful for testing `HasClient` instances.
([#920](https://github.com/haskell-servant/servant/pull/920))
- *servant-client-core* Add `hoistClient` to `HasClient`.
Just like `hoistServer` allows us to change the monad in which request handlers
of a web application live in, we also have `hoistClient` for changing the monad
in which *client functions* live.
Read [tutorial section for more information](https://haskell-servant.readthedocs.io/en/release-0.14/tutorial/Client.html#changing-the-monad-the-client-functions-live-in).
([#936](https://github.com/haskell-servant/servant/pull/936))
iF you have own combinators, you'll need to define a new method of
`HasClient` class, for example:
```haskell
type Client m (MyCombinator :> api) = MyValue :> Client m api
hoistClientMonad pm _ nt cl = hoistClientMonad pm (Proxy :: Proxy api) nt . cl
```
- *servant* Add `safeLink' :: (Link -> a) -> ... -> MkLink endpoint a`,
which allows to create helpers returning something else than `Link`.
([#968](https://github.com/haskell-servant/servant/pull/968))
- *servant-server* File serving in polymorphic monad.
i.e. Generalised types of `serveDirectoryFileServer` etc functions in
`Servant.Utils.StaticFiles`
([#953](https://github.com/haskell-servant/servant/pull/953))
- *servant-server* `ReqBody` content type check is recoverable.
This allows writing APIs like:
```haskell
ReqBody '[JSON] Int :> Post '[PlainText] Int
:<|> ReqBody '[PlainText] Int :> Post '[PlainText] Int
```
which is useful when handlers are subtly different,
for example may do less work.
([#937](https://github.com/haskell-servant/servant/pull/937))
- *servant-client* Add more constructors to `RequestBody`, including
`RequestBodyStream`.
*Note:* we are looking for http-library agnostic API,
so the might change again soon.
Tell us which constructors are useful for you!
([#913](https://github.com/haskell-servant/servant/pull/913))
### Other changes
- `GetHeaders` instances implemented without `OverlappingInstances`
([#971](https://github.com/haskell-servant/servant/pull/971))
- Added tests or enabled tests
([#975](https://github.com/haskell-servant/servant/pull/975))
- Add [pagination cookbook recipe](https://haskell-servant.readthedocs.io/en/release-0.14/cookbook/pagination/Pagination.html)
([#946](https://github.com/haskell-servant/servant/pull/946))
- Add [`servant-flatten` "spice" to the structuring api recipe](https://haskell-servant.readthedocs.io/en/release-0.14/cookbook/structuring-apis/StructuringApis.html)
([#929](https://github.com/haskell-servant/servant/pull/929))
- Dependency updates
([#900](https://github.com/haskell-servant/servant/pull/900)
[#919](https://github.com/haskell-servant/servant/pull/919)
[#924](https://github.com/haskell-servant/servant/pull/924)
[#943](https://github.com/haskell-servant/servant/pull/943)
[#964](https://github.com/haskell-servant/servant/pull/964)
[#967](https://github.com/haskell-servant/servant/pull/967)
[#976](https://github.com/haskell-servant/servant/pull/976))
- Documentation updates
[#963](https://github.com/haskell-servant/servant/pull/963)
[#960](https://github.com/haskell-servant/servant/pull/960)
[#908](https://github.com/haskell-servant/servant/pull/908)
[#958](https://github.com/haskell-servant/servant/pull/958)
[#948](https://github.com/haskell-servant/servant/pull/948)
[#928](https://github.com/haskell-servant/servant/pull/928)
[#921](https://github.com/haskell-servant/servant/pull/921))
- Development process improvements
([#680](https://github.com/haskell-servant/servant/pull/680)
[#917](https://github.com/haskell-servant/servant/pull/917)
[#923](https://github.com/haskell-servant/servant/pull/923)
[#961](https://github.com/haskell-servant/servant/pull/961)
[#973](https://github.com/haskell-servant/servant/pull/973))
### Note
(VIM) Regular-expression to link PR numbers: `s/\v#(\d+)/[#\1](https:\/\/github.com\/haskell-servant\/servant/pull\/\1)/`
0.13.0.1
--------

View file

@ -1,5 +1,5 @@
name: servant
version: 0.13.0.1
version: 0.14.1
synopsis: A family of combinators for defining webservices APIs
description:
A family of combinators for defining webservices APIs and serving them
@ -34,7 +34,7 @@ custom-setup
setup-depends:
base >= 4 && <5,
Cabal,
cabal-doctest >= 1.0.2 && <1.1
cabal-doctest >= 1.0.6 && <1.1
library
exposed-modules:
@ -46,6 +46,7 @@ library
Servant.API.Description
Servant.API.Empty
Servant.API.Experimental.Auth
Servant.API.Generic
Servant.API.Header
Servant.API.HttpVersion
Servant.API.Internal.Test.ComprehensiveAPI
@ -62,8 +63,11 @@ library
Servant.API.Vault
Servant.API.Verbs
Servant.API.WithNamedContext
Servant.Links
-- Deprecated modules, to be removed in late 2019
exposed-modules:
Servant.Utils.Links
Servant.Utils.Enter
-- Bundled with GHC: Lower bound to not force re-installs
-- text and mtl are bundled starting with GHC-8.4
@ -77,25 +81,24 @@ library
if !impl(ghc >= 8.0)
build-depends:
semigroups >= 0.18.3 && < 0.19
semigroups >= 0.18.4 && < 0.19
-- Other dependencies: Lower bound around what is in the latest Stackage LTS.
-- Here can be exceptions if we really need features from the newer versions.
build-depends:
base-compat >= 0.9.3 && < 0.11
, aeson >= 1.2.3.0 && < 1.4
, attoparsec >= 0.13.2.0 && < 0.14
base-compat >= 0.10.1 && < 0.11
, aeson >= 1.3.1.1 && < 1.5
, attoparsec >= 0.13.2.2 && < 0.14
, case-insensitive >= 1.2.0.10 && < 1.3
, http-api-data >= 0.3.7.1 && < 0.4
, http-media >= 0.7.1.1 && < 0.8
, http-types >= 0.12 && < 0.13
, natural-transformation >= 0.4 && < 0.5
, mmorph >= 1.1.0 && < 1.2
, http-api-data >= 0.3.8.1 && < 0.4
, http-media >= 0.7.1.2 && < 0.8
, http-types >= 0.12.1 && < 0.13
, mmorph >= 1.1.2 && < 1.2
, tagged >= 0.8.5 && < 0.9
, singleton-bool >= 0.1.2.0 && < 0.2
, singleton-bool >= 0.1.4 && < 0.2
, string-conversions >= 0.4.0.1 && < 0.5
, network-uri >= 2.6.1.0 && < 2.7
, vault >= 0.3.0.7 && < 0.4
, vault >= 0.3.1.1 && < 0.4
hs-source-dirs: src
default-language: Haskell2010
@ -133,15 +136,13 @@ test-suite spec
other-modules:
Servant.API.ContentTypesSpec
Servant.API.ResponseHeadersSpec
Servant.Utils.LinksSpec
Servant.Utils.EnterSpec
Servant.LinksSpec
-- Dependencies inherited from the library. No need to specify bounds.
build-depends:
base
, base-compat
, aeson
, attoparsec
, bytestring
, servant
, string-conversions
@ -153,23 +154,23 @@ test-suite spec
-- Additonal dependencies
build-depends:
aeson-compat >= 0.3.3 && < 0.4
, hspec >= 2.4.4 && < 2.6
, QuickCheck >= 2.10.1 && < 2.12
, quickcheck-instances >= 0.3.16 && < 0.4
aeson-compat >= 0.3.7.1 && < 0.4
, hspec >= 2.5.1 && < 2.6
, QuickCheck >= 2.11.3 && < 2.12
, quickcheck-instances >= 0.3.18 && < 0.4
build-tool-depends:
hspec-discover:hspec-discover >= 2.4.4 && < 2.6
hspec-discover:hspec-discover >= 2.5.1 && < 2.6
test-suite doctests
build-depends:
base
, servant
, doctest >= 0.13.0 && <0.16
, doctest >= 0.15.0 && <0.16
-- We test Links failure with doctest, so we need extra dependencies
build-depends:
hspec >= 2.4.4 && < 2.6
hspec >= 2.5.1 && < 2.6
type: exitcode-stdio-1.0
main-is: test/doctests.hs
@ -180,4 +181,4 @@ test-suite doctests
x-doctest-options: -fdiagnostics-color=never
include-dirs: include
x-doctest-source-dirs: test
x-doctest-modules: Servant.Utils.LinksSpec
x-doctest-modules: Servant.LinksSpec

View file

@ -63,8 +63,8 @@ module Servant.API (
module Servant.API.Experimental.Auth,
-- | General Authentication
-- * Utilities
module Servant.Utils.Links,
-- * Links
module Servant.Links,
-- | Type-safe internal URIs
-- * Re-exports
@ -114,9 +114,9 @@ import Servant.API.ResponseHeaders
ResponseHeader (..), addHeader, getHeadersHList, getResponse,
noHeader)
import Servant.API.Stream
(BoundaryStrategy (..), BuildFromStream (..),
ByteStringParser (..), FramingRender (..),
FramingUnrender (..), NetstringFraming, NewlineFraming,
(BoundaryStrategy (..), ByteStringParser (..),
FramingRender (..), FramingUnrender (..),
FromResultStream (..), NetstringFraming, NewlineFraming,
NoFraming, ResultStream (..), Stream, StreamGenerator (..),
StreamGet, StreamPost, ToStreamGenerator (..))
import Servant.API.Sub
@ -134,7 +134,7 @@ import Servant.API.Verbs
ReflectMethod (reflectMethod), StdMethod (..), Verb)
import Servant.API.WithNamedContext
(WithNamedContext)
import Servant.Utils.Links
import Servant.Links
(HasLink (..), IsElem, IsElem', Link, URI (..), safeLink)
import Web.HttpApiData
(FromHttpApiData (..), ToHttpApiData (..))

View file

@ -0,0 +1,146 @@
{-# LANGUAGE ConstraintKinds #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE TypeOperators #-}
-- | Define servant servers from record types. Generics for the win.
--
-- The usage is simple, if you only need a collection of routes. First you
-- define a record with field types prefixed by a parameter `route`:
--
-- @
-- data Routes route = Routes
-- { _get :: route :- Capture "id" Int :> Get '[JSON] String
-- , _put :: route :- ReqBody '[JSON] Int :> Put '[JSON] Bool
-- }
-- deriving ('Generic')
-- @
--
-- You can get a 'Proxy' of the server using
--
-- @
-- api :: Proxy (ToServantApi Routes)
-- api = genericApi (Proxy :: Proxy Routes)
-- @
--
-- Using 'genericApi' is better as it checks that instances exists,
-- i.e. you get better error messages than simply using 'Proxy' value.
--
-- __Note:__ in 0.14 series this module isn't re-exported from 'Servant.API'.
--
-- "Servant.API.Generic" is based on @servant-generic@ package by
-- [Patrick Chilton](https://github.com/chpatrick)
--
-- @since 0.14.1
module Servant.API.Generic (
GenericMode (..),
GenericServant,
ToServant,
toServant,
fromServant,
-- * AsApi
AsApi,
ToServantApi,
genericApi,
-- * Utility
GServantProduct,
-- * re-exports
Generic (Rep),
) where
-- Based on servant-generic licensed under MIT License
--
-- Copyright (c) 2017 Patrick Chilton
--
-- Permission is hereby granted, free of charge, to any person obtaining a copy
-- of this software and associated documentation files (the "Software"), to deal
-- in the Software without restriction, including without limitation the rights
-- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-- copies of the Software, and to permit persons to whom the Software is
-- furnished to do so, subject to the following conditions:
--
-- The above copyright notice and this permission notice shall be included in all
-- copies or substantial portions of the Software.
--
-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
-- SOFTWARE.
import Data.Proxy
(Proxy (..))
import GHC.Generics
((:*:) (..), Generic (..), K1 (..), M1 (..))
import Servant.API.Alternative
-- | A constraint alias, for work with 'mode' and 'routes'.
type GenericServant routes mode = (GenericMode mode, Generic (routes mode), GServantProduct (Rep (routes mode)))
-- | A class with a type family that applies an appropriate type family to the @api@
-- parameter. For example, 'AsApi' will leave @api@ untouched, while
-- @'AsServerT' m@ will produce @'ServerT' api m@.
class GenericMode mode where
type mode :- api :: *
infixl 0 :-
-- | Turns a generic product type into a tree of `:<|>` combinators.
type ToServant routes mode = GToServant (Rep (routes mode))
type ToServantApi routes = ToServant routes AsApi
-- | See `ToServant`, but at value-level.
toServant
:: GenericServant routes mode
=> routes mode -> ToServant routes mode
toServant = gtoServant . from
-- | Inverse of `toServant`.
--
-- This can be used to turn 'generated' values such as client functions into records.
--
-- You may need to provide a type signature for the /output/ type (your record type).
fromServant
:: GenericServant routes mode
=> ToServant routes mode -> routes mode
fromServant = to . gfromServant
-- | A type that specifies that an API record contains an API definition. Only useful at type-level.
data AsApi
instance GenericMode AsApi where
type AsApi :- api = api
-- | Get a 'Proxy' of an API type.
genericApi
:: GenericServant routes AsApi
=> Proxy routes
-> Proxy (ToServantApi routes)
genericApi _ = Proxy
-------------------------------------------------------------------------------
-- Class
-------------------------------------------------------------------------------
class GServantProduct f where
type GToServant f
gtoServant :: f p -> GToServant f
gfromServant :: GToServant f -> f p
instance GServantProduct f => GServantProduct (M1 i c f) where
type GToServant (M1 i c f) = GToServant f
gtoServant = gtoServant . unM1
gfromServant = M1 . gfromServant
instance (GServantProduct l, GServantProduct r) => GServantProduct (l :*: r) where
type GToServant (l :*: r) = GToServant l :<|> GToServant r
gtoServant (l :*: r) = gtoServant l :<|> gtoServant r
gfromServant (l :<|> r) = gfromServant l :*: gfromServant r
instance GServantProduct (K1 i c) where
type GToServant (K1 i c) = c
gtoServant = unK1
gfromServant = K1

View file

@ -7,6 +7,7 @@
module Servant.API.Internal.Test.ComprehensiveAPI where
import Data.Proxy
(Proxy (..))
import Servant.API
type GET = Get '[JSON] NoContent
@ -38,6 +39,7 @@ type ComprehensiveAPIWithoutRaw =
Vault :> GET :<|>
Verb 'POST 204 '[JSON] NoContent :<|>
Verb 'POST 204 '[JSON] Int :<|>
Stream 'GET 200 NetstringFraming JSON [Int] :<|>
WithNamedContext "foo" '[] GET :<|>
CaptureAll "foo" Int :> GET :<|>
Summary "foo" :> GET :<|>

View file

@ -1,23 +1,48 @@
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE DeriveDataTypeable #-}
{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE DeriveDataTypeable #-}
{-# LANGUAGE DeriveGeneric #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE FunctionalDependencies #-}
{-# LANGUAGE KindSignatures #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE PolyKinds #-}
{-# LANGUAGE RankNTypes #-}
{-# LANGUAGE TupleSections #-}
{-# LANGUAGE KindSignatures #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE PolyKinds #-}
{-# LANGUAGE RankNTypes #-}
{-# LANGUAGE TupleSections #-}
{-# OPTIONS_HADDOCK not-home #-}
module Servant.API.Stream where
module Servant.API.Stream (
Stream,
StreamGet,
StreamPost,
-- * Sources
--
-- | Both 'StreamGenerator' and 'ResultStream' are equivalent
-- to some *source* in streaming libraries.
StreamGenerator (..),
ToStreamGenerator (..),
ResultStream (..),
FromResultStream (..),
-- * Framing
FramingRender (..),
FramingUnrender (..),
BoundaryStrategy (..),
ByteStringParser (..),
-- ** Strategies
NoFraming,
NewlineFraming,
NetstringFraming,
) where
import Control.Arrow
(first)
import Data.ByteString.Lazy
(ByteString, empty)
import qualified Data.ByteString.Lazy.Char8 as LB
import Data.Foldable
(traverse_)
import Data.List.NonEmpty
(NonEmpty (..))
import Data.Monoid
((<>))
import Data.Proxy
@ -30,35 +55,82 @@ import GHC.TypeLits
(Nat)
import Network.HTTP.Types.Method
(StdMethod (..))
import System.IO.Unsafe
(unsafeInterleaveIO)
import Text.Read
(readMaybe)
-- | A Stream endpoint for a given method emits a stream of encoded values at a given Content-Type, delimited by a framing strategy. Stream endpoints always return response code 200 on success. Type synonyms are provided for standard methods.
-- | A Stream endpoint for a given method emits a stream of encoded values at a
-- given Content-Type, delimited by a framing strategy. Stream endpoints always
-- return response code 200 on success. Type synonyms are provided for standard
-- methods.
data Stream (method :: k1) (status :: Nat) (framing :: *) (contentType :: *) (a :: *)
deriving (Typeable, Generic)
type StreamGet = Stream 'GET 200
type StreamPost = Stream 'POST 200
-- | Stream endpoints may be implemented as producing a @StreamGenerator@ -- a function that itself takes two emit functions -- the first to be used on the first value the stream emits, and the second to be used on all subsequent values (to allow interspersed framing strategies such as comma separation).
newtype StreamGenerator a = StreamGenerator {getStreamGenerator :: (a -> IO ()) -> (a -> IO ()) -> IO ()}
-- | Stream endpoints may be implemented as producing a @StreamGenerator@ a
-- function that itself takes two emit functions the first to be used on the
-- first value the stream emits, and the second to be used on all subsequent
-- values (to allow interspersed framing strategies such as comma separation).
newtype StreamGenerator a = StreamGenerator { getStreamGenerator :: (a -> IO ()) -> (a -> IO ()) -> IO () }
-- | ToStreamGenerator 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.
class ToStreamGenerator a b | a -> b where
toStreamGenerator :: a -> StreamGenerator b
toStreamGenerator :: a -> StreamGenerator b
instance ToStreamGenerator (StreamGenerator a) a
where toStreamGenerator x = x
instance ToStreamGenerator (StreamGenerator a) a where
toStreamGenerator x = x
-- | Clients reading from streaming endpoints can be implemented as producing a @ResultStream@ that captures the setup, takedown, and incremental logic for a read, being an IO continuation that takes a producer of Just either values or errors that terminates with a Nothing.
newtype ResultStream a = ResultStream (forall b. (IO (Maybe (Either String a)) -> IO b) -> IO b)
instance ToStreamGenerator (NonEmpty a) a where
toStreamGenerator (x :| xs) = StreamGenerator $ \f g -> f x >> traverse_ g xs
-- | BuildFromStream 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.
class BuildFromStream a b where
buildFromStream :: ResultStream a -> b
instance ToStreamGenerator [a] a where
toStreamGenerator [] = StreamGenerator $ \_ _ -> return ()
toStreamGenerator (x : xs) = StreamGenerator $ \f g -> f x >> traverse_ g xs
instance BuildFromStream a (ResultStream a)
where buildFromStream x = x
-- | Clients reading from streaming endpoints can be implemented as producing a
-- @ResultStream@ that captures the setup, takedown, and incremental logic for
-- a read, being an IO continuation that takes a producer of Just either values
-- or errors that terminates with a Nothing.
newtype ResultStream a = ResultStream { runResultStream :: forall b. (IO (Maybe (Either String a)) -> IO b) -> IO b }
-- | FromResultStream 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.
class FromResultStream a b | b -> a where
fromResultStream :: ResultStream a -> IO b
instance FromResultStream a (ResultStream a) where
fromResultStream = return
-- | Uses 'unsafeInterleaveIO'
instance FromResultStream a [a] where
fromResultStream x = runResultStream x lazyRead
-- | Uses 'unsafeInterleaveIO'
instance FromResultStream a (NonEmpty a) where
fromResultStream x = runResultStream x $ \r -> do
e <- r
case e of
Nothing -> fail "Empty stream"
Just (Left er) -> fail er
Just (Right y) -> do
ys <- lazyRead r
return (y :| ys)
lazyRead :: IO (Maybe (Either String a)) -> IO [a]
lazyRead r = go
where
go = unsafeInterleaveIO loop
loop = do
e <- r
case e of
Nothing -> return []
Just (Left er) -> fail er
Just (Right y) -> do
ys <- go
return (y : ys)
-- | The FramingRender class provides the logic for emitting a framing strategy. The strategy emits a header, followed by boundary-delimited data, and finally a termination character. For many strategies, some of these will just be empty bytestrings.
class FramingRender strategy a where
@ -74,10 +146,10 @@ data BoundaryStrategy = BoundaryStrategyBracket (ByteString -> (ByteString,ByteS
| BoundaryStrategyGeneral (ByteString -> ByteString)
-- | A type of parser that can never fail, and has different parsing strategies (incremental, or EOF) depending if more input can be sent. The incremental parser should return `Nothing` if it would like to be sent a longer ByteString. If it returns a value, it also returns the remainder following that value.
data ByteStringParser a = ByteStringParser {
parseIncremental :: ByteString -> Maybe (a, ByteString),
parseEOF :: ByteString -> (a, ByteString)
}
data ByteStringParser a = ByteStringParser
{ parseIncremental :: ByteString -> Maybe (a, ByteString)
, parseEOF :: ByteString -> (a, ByteString)
}
-- | The FramingUnrender class provides the logic for parsing a framing strategy. The outer @ByteStringParser@ strips the header from a stream of bytes, and yields a parser that can handle the remainder, stepwise. Each frame may be a ByteString, or a String indicating the error state for that frame. Such states are per-frame, so that protocols that can resume after errors are able to do so. Eventually this returns an empty ByteString to indicate termination.
class FramingUnrender strategy a where

View file

@ -58,7 +58,7 @@ type Patch = Verb 'PATCH 200
--
-- If the resource cannot be created immediately, use 'PostAccepted'.
--
-- Consider using 'Servant.Utils.Links.safeLink' for the @Location@ header
-- Consider using 'Servant.Links.safeLink' for the @Location@ header
-- field.
-- | 'POST' with 201 status code.

View file

@ -0,0 +1,573 @@
{-# LANGUAGE ConstraintKinds #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE FunctionalDependencies #-}
{-# LANGUAGE PolyKinds #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE UndecidableInstances #-}
{-# OPTIONS_HADDOCK not-home #-}
-- | Type safe generation of internal links.
--
-- Given an API with a few endpoints:
--
-- >>> :set -XDataKinds -XTypeFamilies -XTypeOperators
-- >>> import Servant.API
-- >>> import Servant.Links
-- >>> import Data.Proxy
-- >>>
-- >>> type Hello = "hello" :> Get '[JSON] Int
-- >>> type Bye = "bye" :> QueryParam "name" String :> Delete '[JSON] NoContent
-- >>> type API = Hello :<|> Bye
-- >>> let api = Proxy :: Proxy API
--
-- It is possible to generate links that are guaranteed to be within 'API' with
-- 'safeLink'. The first argument to 'safeLink' is a type representing the API
-- you would like to restrict links to. The second argument is the destination
-- endpoint you would like the link to point to, this will need to end with a
-- verb like GET or POST. Further arguments may be required depending on the
-- type of the endpoint. If everything lines up you will get a 'Link' out the
-- other end.
--
-- You may omit 'QueryParam's and the like should you not want to provide them,
-- but types which form part of the URL path like 'Capture' must be included.
-- The reason you may want to omit 'QueryParam's is that safeLink is a bit
-- magical: if parameters are included that could take input it will return a
-- function that accepts that input and generates a link. This is best shown
-- with an example. Here, a link is generated with no parameters:
--
-- >>> let hello = Proxy :: Proxy ("hello" :> Get '[JSON] Int)
-- >>> toUrlPiece (safeLink api hello :: Link)
-- "hello"
--
-- If the API has an endpoint with parameters then we can generate links with
-- or without those:
--
-- >>> let with = Proxy :: Proxy ("bye" :> QueryParam "name" String :> Delete '[JSON] NoContent)
-- >>> toUrlPiece $ safeLink api with (Just "Hubert")
-- "bye?name=Hubert"
--
-- >>> let without = Proxy :: Proxy ("bye" :> Delete '[JSON] NoContent)
-- >>> toUrlPiece $ safeLink api without
-- "bye"
--
-- If you would like create a helper for generating links only within that API,
-- you can partially apply safeLink if you specify a correct type signature
-- like so:
--
-- >>> :set -XConstraintKinds
-- >>> :{
-- >>> let apiLink :: (IsElem endpoint API, HasLink endpoint)
-- >>> => Proxy endpoint -> MkLink endpoint Link
-- >>> apiLink = safeLink api
-- >>> :}
--
-- `safeLink'` allows to make specialise the output:
--
-- >>> safeLink' toUrlPiece api without
-- "bye"
--
-- >>> :{
-- >>> let apiTextLink :: (IsElem endpoint API, HasLink endpoint)
-- >>> => Proxy endpoint -> MkLink endpoint Text
-- >>> apiTextLink = safeLink' toUrlPiece api
-- >>> :}
--
-- >>> apiTextLink without
-- "bye"
--
-- Attempting to construct a link to an endpoint that does not exist in api
-- will result in a type error like this:
--
-- >>> let bad_link = Proxy :: Proxy ("hello" :> Delete '[JSON] NoContent)
-- >>> safeLink api bad_link
-- ...
-- ...Could not deduce...
-- ...
--
-- This error is essentially saying that the type family couldn't find
-- bad_link under api after trying the open (but empty) type family
-- `IsElem'` as a last resort.
--
-- @since 0.14.1
module Servant.Links (
module Servant.API.TypeLevel,
-- * Building and using safe links
--
-- | Note that 'URI' is from the "Network.URI" module in the @network-uri@ package.
safeLink
, safeLink'
, allLinks
, allLinks'
, URI(..)
-- * Generics
, AsLink
, fieldLink
, fieldLink'
, allFieldLinks
, allFieldLinks'
-- * Adding custom types
, HasLink(..)
, Link
, linkURI
, linkURI'
, LinkArrayElementStyle (..)
-- ** Link accessors
, Param (..)
, linkSegments
, linkQueryParams
) where
import Data.List
import Data.Proxy
(Proxy (..))
import Data.Semigroup
((<>))
import Data.Singletons.Bool
(SBool (..), SBoolI (..))
import qualified Data.Text as Text
import qualified Data.Text.Encoding as TE
import Data.Type.Bool
(If)
import GHC.TypeLits
(KnownSymbol, symbolVal)
import Network.URI
(URI (..), escapeURIString, isUnreserved)
import Prelude ()
import Prelude.Compat
import Servant.API.Alternative
((:<|>) ((:<|>)))
import Servant.API.BasicAuth
(BasicAuth)
import Servant.API.Capture
(Capture', CaptureAll)
import Servant.API.Description
(Description, Summary)
import Servant.API.Empty
(EmptyAPI (..))
import Servant.API.Experimental.Auth
(AuthProtect)
import Servant.API.Generic
import Servant.API.Header
(Header')
import Servant.API.HttpVersion
(HttpVersion)
import Servant.API.IsSecure
(IsSecure)
import Servant.API.Modifiers
(FoldRequired)
import Servant.API.QueryParam
(QueryFlag, QueryParam', QueryParams)
import Servant.API.Raw
(Raw)
import Servant.API.RemoteHost
(RemoteHost)
import Servant.API.ReqBody
(ReqBody')
import Servant.API.Stream
(Stream)
import Servant.API.Sub
(type (:>))
import Servant.API.TypeLevel
import Servant.API.Vault
(Vault)
import Servant.API.Verbs
(Verb)
import Servant.API.WithNamedContext
(WithNamedContext)
import Web.HttpApiData
-- | 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.
data Link = Link
{ _segments :: [Escaped]
, _queryParams :: [Param]
} deriving Show
newtype Escaped = Escaped String
escaped :: String -> Escaped
escaped = Escaped . escapeURIString isUnreserved
getEscaped :: Escaped -> String
getEscaped (Escaped s) = s
instance Show Escaped where
showsPrec d (Escaped s) = showsPrec d s
show (Escaped s) = show s
linkSegments :: Link -> [String]
linkSegments = map getEscaped . _segments
linkQueryParams :: Link -> [Param]
linkQueryParams = _queryParams
instance ToHttpApiData Link where
toHeader = TE.encodeUtf8 . toUrlPiece
toUrlPiece l =
let uri = linkURI l
in Text.pack $ uriPath uri ++ uriQuery uri
-- | Query parameter.
data Param
= SingleParam String Text.Text
| ArrayElemParam String Text.Text
| FlagParam String
deriving Show
addSegment :: Escaped -> Link -> Link
addSegment seg l = l { _segments = _segments l <> [seg] }
addQueryParam :: Param -> Link -> Link
addQueryParam qp l =
l { _queryParams = _queryParams l <> [qp] }
-- | Transform 'Link' into 'URI'.
--
-- >>> type API = "something" :> Get '[JSON] Int
-- >>> linkURI $ safeLink (Proxy :: Proxy API) (Proxy :: Proxy API)
-- something
--
-- >>> type API = "sum" :> QueryParams "x" Int :> Get '[JSON] Int
-- >>> linkURI $ safeLink (Proxy :: Proxy API) (Proxy :: Proxy API) [1, 2, 3]
-- sum?x[]=1&x[]=2&x[]=3
--
-- >>> type API = "foo/bar" :> Get '[JSON] Int
-- >>> linkURI $ safeLink (Proxy :: Proxy API) (Proxy :: Proxy API)
-- foo%2Fbar
--
-- >>> type SomeRoute = "abc" :> Capture "email" String :> Put '[JSON] ()
-- >>> let someRoute = Proxy :: Proxy SomeRoute
-- >>> safeLink someRoute someRoute "test@example.com"
-- Link {_segments = ["abc","test%40example.com"], _queryParams = []}
--
-- >>> linkURI $ safeLink someRoute someRoute "test@example.com"
-- abc/test%40example.com
--
linkURI :: Link -> URI
linkURI = linkURI' LinkArrayElementBracket
-- | How to encode array query elements.
data LinkArrayElementStyle
= LinkArrayElementBracket -- ^ @foo[]=1&foo[]=2@
| LinkArrayElementPlain -- ^ @foo=1&foo=2@
deriving (Eq, Ord, Show, Enum, Bounded)
-- | Configurable 'linkURI'.
--
-- >>> type API = "sum" :> QueryParams "x" Int :> Get '[JSON] Int
-- >>> linkURI' LinkArrayElementBracket $ safeLink (Proxy :: Proxy API) (Proxy :: Proxy API) [1, 2, 3]
-- sum?x[]=1&x[]=2&x[]=3
--
-- >>> linkURI' LinkArrayElementPlain $ safeLink (Proxy :: Proxy API) (Proxy :: Proxy API) [1, 2, 3]
-- sum?x=1&x=2&x=3
--
linkURI' :: LinkArrayElementStyle -> Link -> URI
linkURI' addBrackets (Link segments q_params) =
URI mempty -- No scheme (relative)
Nothing -- Or authority (relative)
(intercalate "/" $ map getEscaped segments)
(makeQueries q_params) mempty
where
makeQueries :: [Param] -> String
makeQueries [] = ""
makeQueries xs =
"?" <> intercalate "&" (fmap makeQuery xs)
makeQuery :: Param -> String
makeQuery (ArrayElemParam k v) = escape k <> style <> escape (Text.unpack v)
makeQuery (SingleParam k v) = escape k <> "=" <> escape (Text.unpack v)
makeQuery (FlagParam k) = escape k
style = case addBrackets of
LinkArrayElementBracket -> "[]="
LinkArrayElementPlain -> "="
escape :: String -> String
escape = escapeURIString isUnreserved
-- | Create a valid (by construction) relative URI with query params.
--
-- This function will only typecheck if `endpoint` is part of the API `api`
safeLink
:: forall endpoint api. (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
safeLink = safeLink' id
-- | More general 'safeLink'.
--
safeLink'
:: forall endpoint api a. (IsElem endpoint api, HasLink endpoint)
=> (Link -> a)
-> 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 a
safeLink' toA _ endpoint = toLink toA endpoint (Link mempty mempty)
-- | Create all links in an API.
--
-- Note that the @api@ type must be restricted to the endpoints that have
-- valid links to them.
--
-- >>> type API = "foo" :> Capture "name" Text :> Get '[JSON] Text :<|> "bar" :> Capture "name" Int :> Get '[JSON] Double
-- >>> let fooLink :<|> barLink = allLinks (Proxy :: Proxy API)
-- >>> :t fooLink
-- fooLink :: Text -> Link
-- >>> :t barLink
-- barLink :: Int -> Link
--
-- Note: nested APIs don't work well with this approach
--
-- >>> :kind! MkLink (Capture "nest" Char :> (Capture "x" Int :> Get '[JSON] Int :<|> Capture "y" Double :> Get '[JSON] Double)) Link
-- MkLink (Capture "nest" Char :> (Capture "x" Int :> Get '[JSON] Int :<|> Capture "y" Double :> Get '[JSON] Double)) Link :: *
-- = Char -> (Int -> Link) :<|> (Double -> Link)
allLinks
:: forall api. HasLink api
=> Proxy api
-> MkLink api Link
allLinks = allLinks' id
-- | More general 'allLinks'. See `safeLink'`.
allLinks'
:: forall api a. HasLink api
=> (Link -> a)
-> Proxy api
-> MkLink api a
allLinks' toA api = toLink toA api (Link mempty mempty)
-------------------------------------------------------------------------------
-- Generics
-------------------------------------------------------------------------------
-- | Given an API record field, create a link for that route. Only the field's
-- type is used.
--
-- @
-- data Record route = Record
-- { _get :: route :- Capture "id" Int :> Get '[JSON] String
-- , _put :: route :- ReqBody '[JSON] Int :> Put '[JSON] Bool
-- }
-- deriving ('Generic')
--
-- getLink :: Int -> Link
-- getLink = 'fieldLink' _get
-- @
--
-- @since 0.14.1
fieldLink
:: ( IsElem endpoint (ToServantApi routes), HasLink endpoint
, GenericServant routes AsApi
)
=> (routes AsApi -> endpoint)
-> MkLink endpoint Link
fieldLink = fieldLink' id
-- | More general version of 'fieldLink'
--
-- @since 0.14.1
fieldLink'
:: forall routes endpoint a.
( IsElem endpoint (ToServantApi routes), HasLink endpoint
, GenericServant routes AsApi
)
=> (Link -> a)
-> (routes AsApi -> endpoint)
-> MkLink endpoint a
fieldLink' toA _ = safeLink' toA (genericApi (Proxy :: Proxy routes)) (Proxy :: Proxy endpoint)
-- | A type that specifies that an API record contains a set of links.
--
-- @since 0.14.1
data AsLink (a :: *)
instance GenericMode (AsLink a) where
type (AsLink a) :- api = MkLink api a
-- | Get all links as a record.
--
-- @since 0.14.1
allFieldLinks
:: ( HasLink (ToServantApi routes)
, GenericServant routes (AsLink Link)
, ToServant routes (AsLink Link) ~ MkLink (ToServantApi routes) Link
)
=> routes (AsLink Link)
allFieldLinks = allFieldLinks' id
-- | More general version of 'allFieldLinks'.
--
-- @since 0.14.1
allFieldLinks'
:: forall routes a.
( HasLink (ToServantApi routes)
, GenericServant routes (AsLink a)
, ToServant routes (AsLink a) ~ MkLink (ToServantApi routes) a
)
=> (Link -> a)
-> routes (AsLink a)
allFieldLinks' toA
= fromServant
$ allLinks' toA (Proxy :: Proxy (ToServantApi routes))
-------------------------------------------------------------------------------
-- HasLink
-------------------------------------------------------------------------------
-- | Construct a toLink for an endpoint.
class HasLink endpoint where
type MkLink endpoint (a :: *)
toLink
:: (Link -> a)
-> Proxy endpoint -- ^ The API endpoint you would like to point to
-> Link
-> MkLink endpoint a
-- Naked symbol instance
instance (KnownSymbol sym, HasLink sub) => HasLink (sym :> sub) where
type MkLink (sym :> sub) a = MkLink sub a
toLink toA _ =
toLink toA (Proxy :: Proxy sub) . addSegment (escaped seg)
where
seg = symbolVal (Proxy :: Proxy sym)
-- QueryParam instances
instance (KnownSymbol sym, ToHttpApiData v, HasLink sub, SBoolI (FoldRequired mods))
=> HasLink (QueryParam' mods sym v :> sub)
where
type MkLink (QueryParam' mods sym v :> sub) a = If (FoldRequired mods) v (Maybe v) -> MkLink sub a
toLink toA _ l mv =
toLink toA (Proxy :: Proxy sub) $
case sbool :: SBool (FoldRequired mods) of
STrue -> (addQueryParam . SingleParam k . toQueryParam) mv l
SFalse -> maybe id (addQueryParam . SingleParam k . toQueryParam) mv l
where
k :: String
k = symbolVal (Proxy :: Proxy sym)
instance (KnownSymbol sym, ToHttpApiData v, HasLink sub)
=> HasLink (QueryParams sym v :> sub)
where
type MkLink (QueryParams sym v :> sub) a = [v] -> MkLink sub a
toLink toA _ l =
toLink toA (Proxy :: Proxy sub) .
foldl' (\l' v -> addQueryParam (ArrayElemParam k (toQueryParam v)) l') l
where
k = symbolVal (Proxy :: Proxy sym)
instance (KnownSymbol sym, HasLink sub)
=> HasLink (QueryFlag sym :> sub)
where
type MkLink (QueryFlag sym :> sub) a = Bool -> MkLink sub a
toLink toA _ l False =
toLink toA (Proxy :: Proxy sub) l
toLink toA _ l True =
toLink toA (Proxy :: Proxy sub) $ addQueryParam (FlagParam k) l
where
k = symbolVal (Proxy :: Proxy sym)
-- :<|> instance - Generate all links at once
instance (HasLink a, HasLink b) => HasLink (a :<|> b) where
type MkLink (a :<|> b) r = MkLink a r :<|> MkLink b r
toLink toA _ l = toLink toA (Proxy :: Proxy a) l :<|> toLink toA (Proxy :: Proxy b) l
-- Misc instances
instance HasLink sub => HasLink (ReqBody' mods ct a :> sub) where
type MkLink (ReqBody' mods ct a :> sub) r = MkLink sub r
toLink toA _ = toLink toA (Proxy :: Proxy sub)
instance (ToHttpApiData v, HasLink sub)
=> HasLink (Capture' mods sym v :> sub)
where
type MkLink (Capture' mods sym v :> sub) a = v -> MkLink sub a
toLink toA _ l v =
toLink toA (Proxy :: Proxy sub) $
addSegment (escaped . Text.unpack $ toUrlPiece v) l
instance (ToHttpApiData v, HasLink sub)
=> HasLink (CaptureAll sym v :> sub)
where
type MkLink (CaptureAll sym v :> sub) a = [v] -> MkLink sub a
toLink toA _ l vs = toLink toA (Proxy :: Proxy sub) $
foldl' (flip $ addSegment . escaped . Text.unpack . toUrlPiece) l vs
instance HasLink sub => HasLink (Header' mods sym (a :: *) :> sub) where
type MkLink (Header' mods sym a :> sub) r = MkLink sub r
toLink = simpleToLink (Proxy :: Proxy sub)
instance HasLink sub => HasLink (Vault :> sub) where
type MkLink (Vault :> sub) a = MkLink sub a
toLink = simpleToLink (Proxy :: Proxy sub)
instance HasLink sub => HasLink (Description s :> sub) where
type MkLink (Description s :> sub) a = MkLink sub a
toLink = simpleToLink (Proxy :: Proxy sub)
instance HasLink sub => HasLink (Summary s :> sub) where
type MkLink (Summary s :> sub) a = MkLink sub a
toLink = simpleToLink (Proxy :: Proxy sub)
instance HasLink sub => HasLink (HttpVersion :> sub) where
type MkLink (HttpVersion:> sub) a = MkLink sub a
toLink = simpleToLink (Proxy :: Proxy sub)
instance HasLink sub => HasLink (IsSecure :> sub) where
type MkLink (IsSecure :> sub) a = MkLink sub a
toLink = simpleToLink (Proxy :: Proxy sub)
instance HasLink sub => HasLink (WithNamedContext name context sub) where
type MkLink (WithNamedContext name context sub) a = MkLink sub a
toLink toA _ = toLink toA (Proxy :: Proxy sub)
instance HasLink sub => HasLink (RemoteHost :> sub) where
type MkLink (RemoteHost :> sub) a = MkLink sub a
toLink = simpleToLink (Proxy :: Proxy sub)
instance HasLink sub => HasLink (BasicAuth realm a :> sub) where
type MkLink (BasicAuth realm a :> sub) r = MkLink sub r
toLink = simpleToLink (Proxy :: Proxy sub)
instance HasLink EmptyAPI where
type MkLink EmptyAPI a = EmptyAPI
toLink _ _ _ = EmptyAPI
-- Verb (terminal) instances
instance HasLink (Verb m s ct a) where
type MkLink (Verb m s ct a) r = r
toLink toA _ = toA
instance HasLink Raw where
type MkLink Raw a = a
toLink toA _ = toA
instance HasLink (Stream m status fr ct a) where
type MkLink (Stream m status fr ct a) r = r
toLink toA _ = toA
-- AuthProtext instances
instance HasLink sub => HasLink (AuthProtect tag :> sub) where
type MkLink (AuthProtect tag :> sub) a = MkLink sub a
toLink = simpleToLink (Proxy :: Proxy sub)
-- | Helper for implemneting 'toLink' for combinators not affecting link
-- structure.
simpleToLink
:: forall sub a combinator.
(HasLink sub, MkLink sub a ~ MkLink (combinator :> sub) a)
=> Proxy sub
-> (Link -> a)
-> Proxy (combinator :> sub)
-> Link
-> MkLink (combinator :> sub) a
simpleToLink _ toA _ = toLink toA (Proxy :: Proxy sub)
-- $setup
-- >>> import Servant.API
-- >>> import Data.Text (Text)

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@ -1,122 +0,0 @@
{-# LANGUAGE CPP #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE FunctionalDependencies #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE RankNTypes #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE UndecidableInstances #-}
module Servant.Utils.Enter {-# DEPRECATED "Use hoistServer or hoistServerWithContext from servant-server" #-} (
module Servant.Utils.Enter,
-- * natural-transformation re-exports
(:~>)(..),
) where
import Control.Monad.Identity
import Control.Monad.Morph
import Control.Monad.Reader
import qualified Control.Monad.State.Lazy as LState
import qualified Control.Monad.State.Strict as SState
import qualified Control.Monad.Writer.Lazy as LWriter
import qualified Control.Monad.Writer.Strict as SWriter
import Control.Natural
import Data.Tagged
(Tagged, retag)
import Prelude ()
import Prelude.Compat
import Servant.API
-- | Helper type family to state the 'Enter' symmetry.
type family Entered m n api where
Entered m n (a -> api) = a -> Entered m n api
Entered m n (m a) = n a
Entered m n (api1 :<|> api2) = Entered m n api1 :<|> Entered m n api2
Entered m n (Tagged m a) = Tagged n a
class
( Entered m n typ ~ ret
, Entered n m ret ~ typ
) => Enter typ m n ret | typ m n -> ret, ret m n -> typ, ret typ m -> n, ret typ n -> m
where
-- | Map the leafs of an API type.
enter :: (m :~> n) -> typ -> ret
-- ** Servant combinators
instance
( Enter typ1 m1 n1 ret1, Enter typ2 m2 n2 ret2
, m1 ~ m2, n1 ~ n2
, Entered m1 n1 (typ1 :<|> typ2) ~ (ret1 :<|> ret2)
, Entered n1 m1 (ret1 :<|> ret2) ~ (typ1 :<|> typ2)
) => Enter (typ1 :<|> typ2) m1 n1 (ret1 :<|> ret2)
where
enter e (a :<|> b) = enter e a :<|> enter e b
instance
( Enter typ m n ret
, Entered m n (a -> typ) ~ (a -> ret)
, Entered n m (a -> ret) ~ (a -> typ)
) => Enter (a -> typ) m n (a -> ret)
where
enter arg f a = enter arg (f a)
-- ** Leaf instances
instance
( Entered m n (Tagged m a) ~ Tagged n a
, Entered n m (Tagged n a) ~ Tagged m a
) => Enter (Tagged m a) m n (Tagged n a)
where
enter _ = retag
instance
( Entered m n (m a) ~ n a
, Entered n m (n a) ~ m a
) => Enter (m a) m n (n a)
where
enter (NT f) = f
-- | Like `lift`.
liftNat :: (Control.Monad.Morph.MonadTrans t, Monad m) => m :~> t m
liftNat = NT Control.Monad.Morph.lift
runReaderTNat :: r -> (ReaderT r m :~> m)
runReaderTNat a = NT (`runReaderT` a)
evalStateTLNat :: Monad m => s -> (LState.StateT s m :~> m)
evalStateTLNat a = NT (`LState.evalStateT` a)
evalStateTSNat :: Monad m => s -> (SState.StateT s m :~> m)
evalStateTSNat a = NT (`SState.evalStateT` a)
-- | Log the contents of `SWriter.WriterT` with the function provided as the
-- first argument, and return the value of the @WriterT@ computation
logWriterTSNat :: MonadIO m => (w -> IO ()) -> (SWriter.WriterT w m :~> m)
logWriterTSNat logger = NT $ \x -> do
(a, w) <- SWriter.runWriterT x
liftIO $ logger w
return a
-- | Like `logWriterTSNat`, but for lazy @WriterT@.
logWriterTLNat :: MonadIO m => (w -> IO ()) -> (LWriter.WriterT w m :~> m)
logWriterTLNat logger = NT $ \x -> do
(a, w) <- LWriter.runWriterT x
liftIO $ logger w
return a
-- | Like @mmorph@'s `hoist`.
hoistNat :: (MFunctor t, Monad m) => (m :~> n) -> (t m :~> t n)
hoistNat (NT n) = NT $ hoist n
-- | Like @mmorph@'s `embed`.
embedNat :: (MMonad t, Monad n) => (m :~> t n) -> (t m :~> t n)
embedNat (NT n) = NT $ embed n
-- | Like @mmorph@'s `squash`.
squashNat :: (Monad m, MMonad t) => t (t m) :~> t m
squashNat = NT squash
-- | Like @mmorph@'s `generalize`.
generalizeNat :: Applicative m => Identity :~> m
generalizeNat = NT (pure . runIdentity)

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@ -1,487 +1,6 @@
{-# LANGUAGE ConstraintKinds #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE FlexibleContexts #-}
{-# LANGUAGE FlexibleInstances #-}
{-# LANGUAGE FunctionalDependencies #-}
{-# LANGUAGE PolyKinds #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE UndecidableInstances #-}
{-# OPTIONS_HADDOCK not-home #-}
-- | Type safe generation of internal links.
--
-- Given an API with a few endpoints:
--
-- >>> :set -XDataKinds -XTypeFamilies -XTypeOperators
-- >>> import Servant.API
-- >>> import Servant.Utils.Links
-- >>> import Data.Proxy
-- >>>
-- >>> type Hello = "hello" :> Get '[JSON] Int
-- >>> type Bye = "bye" :> QueryParam "name" String :> Delete '[JSON] NoContent
-- >>> type API = Hello :<|> Bye
-- >>> let api = Proxy :: Proxy API
--
-- It is possible to generate links that are guaranteed to be within 'API' with
-- 'safeLink'. The first argument to 'safeLink' is a type representing the API
-- you would like to restrict links to. The second argument is the destination
-- endpoint you would like the link to point to, this will need to end with a
-- verb like GET or POST. Further arguments may be required depending on the
-- type of the endpoint. If everything lines up you will get a 'Link' out the
-- other end.
--
-- You may omit 'QueryParam's and the like should you not want to provide them,
-- but types which form part of the URL path like 'Capture' must be included.
-- The reason you may want to omit 'QueryParam's is that safeLink is a bit
-- magical: if parameters are included that could take input it will return a
-- function that accepts that input and generates a link. This is best shown
-- with an example. Here, a link is generated with no parameters:
--
-- >>> let hello = Proxy :: Proxy ("hello" :> Get '[JSON] Int)
-- >>> toUrlPiece (safeLink api hello :: Link)
-- "hello"
--
-- If the API has an endpoint with parameters then we can generate links with
-- or without those:
--
-- >>> let with = Proxy :: Proxy ("bye" :> QueryParam "name" String :> Delete '[JSON] NoContent)
-- >>> toUrlPiece $ safeLink api with (Just "Hubert")
-- "bye?name=Hubert"
--
-- >>> let without = Proxy :: Proxy ("bye" :> Delete '[JSON] NoContent)
-- >>> toUrlPiece $ safeLink api without
-- "bye"
--
-- If you would like create a helper for generating links only within that API,
-- you can partially apply safeLink if you specify a correct type signature
-- like so:
--
-- >>> :set -XConstraintKinds
-- >>> :{
-- >>> let apiLink :: (IsElem endpoint API, HasLink endpoint)
-- >>> => Proxy endpoint -> MkLink endpoint Link
-- >>> apiLink = safeLink api
-- >>> :}
--
-- `safeLink'` allows to make specialise the output:
--
-- >>> safeLink' toUrlPiece api without
-- "bye"
--
-- >>> :{
-- >>> let apiTextLink :: (IsElem endpoint API, HasLink endpoint)
-- >>> => Proxy endpoint -> MkLink endpoint Text
-- >>> apiTextLink = safeLink' toUrlPiece api
-- >>> :}
--
-- >>> apiTextLink without
-- "bye"
--
-- Attempting to construct a link to an endpoint that does not exist in api
-- will result in a type error like this:
--
-- >>> let bad_link = Proxy :: Proxy ("hello" :> Delete '[JSON] NoContent)
-- >>> safeLink api bad_link
-- ...
-- ...Could not deduce...
-- ...
--
-- This error is essentially saying that the type family couldn't find
-- bad_link under api after trying the open (but empty) type family
-- `IsElem'` as a last resort.
module Servant.Utils.Links (
module Servant.API.TypeLevel,
-- * Building and using safe links
--
-- | Note that 'URI' is from the "Network.URI" module in the @network-uri@ package.
safeLink
, safeLink'
, allLinks
, allLinks'
, URI(..)
-- * Adding custom types
, HasLink(..)
, Link
, linkURI
, linkURI'
, LinkArrayElementStyle (..)
-- ** Link accessors
, Param (..)
, linkSegments
, linkQueryParams
) where
import Data.List
import Data.Proxy
(Proxy (..))
import Data.Semigroup
((<>))
import Data.Singletons.Bool
(SBool (..), SBoolI (..))
import qualified Data.Text as Text
import qualified Data.Text.Encoding as TE
import Data.Type.Bool
(If)
import GHC.TypeLits
(KnownSymbol, symbolVal)
import Network.URI
(URI (..), escapeURIString, isUnreserved)
import Prelude ()
import Prelude.Compat
import Servant.API.Alternative
((:<|>) ((:<|>)))
import Servant.API.BasicAuth
(BasicAuth)
import Servant.API.Capture
(Capture', CaptureAll)
import Servant.API.Description
(Description, Summary)
import Servant.API.Empty
(EmptyAPI (..))
import Servant.API.Experimental.Auth
(AuthProtect)
import Servant.API.Header
(Header')
import Servant.API.HttpVersion
(HttpVersion)
import Servant.API.IsSecure
(IsSecure)
import Servant.API.Modifiers
(FoldRequired)
import Servant.API.QueryParam
(QueryFlag, QueryParam', QueryParams)
import Servant.API.Raw
(Raw)
import Servant.API.RemoteHost
(RemoteHost)
import Servant.API.ReqBody
(ReqBody')
import Servant.API.Stream
(Stream)
import Servant.API.Sub
(type (:>))
import Servant.API.TypeLevel
import Servant.API.Vault
(Vault)
import Servant.API.Verbs
(Verb)
import Servant.API.WithNamedContext
(WithNamedContext)
import Web.HttpApiData
-- | 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.
data Link = Link
{ _segments :: [Escaped]
, _queryParams :: [Param]
} deriving Show
newtype Escaped = Escaped String
escaped :: String -> Escaped
escaped = Escaped . escapeURIString isUnreserved
getEscaped :: Escaped -> String
getEscaped (Escaped s) = s
instance Show Escaped where
showsPrec d (Escaped s) = showsPrec d s
show (Escaped s) = show s
linkSegments :: Link -> [String]
linkSegments = map getEscaped . _segments
linkQueryParams :: Link -> [Param]
linkQueryParams = _queryParams
instance ToHttpApiData Link where
toHeader = TE.encodeUtf8 . toUrlPiece
toUrlPiece l =
let uri = linkURI l
in Text.pack $ uriPath uri ++ uriQuery uri
-- | Query parameter.
data Param
= SingleParam String Text.Text
| ArrayElemParam String Text.Text
| FlagParam String
deriving Show
addSegment :: Escaped -> Link -> Link
addSegment seg l = l { _segments = _segments l <> [seg] }
addQueryParam :: Param -> Link -> Link
addQueryParam qp l =
l { _queryParams = _queryParams l <> [qp] }
-- | Transform 'Link' into 'URI'.
--
-- >>> type API = "something" :> Get '[JSON] Int
-- >>> linkURI $ safeLink (Proxy :: Proxy API) (Proxy :: Proxy API)
-- something
--
-- >>> type API = "sum" :> QueryParams "x" Int :> Get '[JSON] Int
-- >>> linkURI $ safeLink (Proxy :: Proxy API) (Proxy :: Proxy API) [1, 2, 3]
-- sum?x[]=1&x[]=2&x[]=3
--
-- >>> type API = "foo/bar" :> Get '[JSON] Int
-- >>> linkURI $ safeLink (Proxy :: Proxy API) (Proxy :: Proxy API)
-- foo%2Fbar
--
-- >>> type SomeRoute = "abc" :> Capture "email" String :> Put '[JSON] ()
-- >>> let someRoute = Proxy :: Proxy SomeRoute
-- >>> safeLink someRoute someRoute "test@example.com"
-- Link {_segments = ["abc","test%40example.com"], _queryParams = []}
--
-- >>> linkURI $ safeLink someRoute someRoute "test@example.com"
-- abc/test%40example.com
--
linkURI :: Link -> URI
linkURI = linkURI' LinkArrayElementBracket
-- | How to encode array query elements.
data LinkArrayElementStyle
= LinkArrayElementBracket -- ^ @foo[]=1&foo[]=2@
| LinkArrayElementPlain -- ^ @foo=1&foo=2@
deriving (Eq, Ord, Show, Enum, Bounded)
-- | Configurable 'linkURI'.
--
-- >>> type API = "sum" :> QueryParams "x" Int :> Get '[JSON] Int
-- >>> linkURI' LinkArrayElementBracket $ safeLink (Proxy :: Proxy API) (Proxy :: Proxy API) [1, 2, 3]
-- sum?x[]=1&x[]=2&x[]=3
--
-- >>> linkURI' LinkArrayElementPlain $ safeLink (Proxy :: Proxy API) (Proxy :: Proxy API) [1, 2, 3]
-- sum?x=1&x=2&x=3
--
linkURI' :: LinkArrayElementStyle -> Link -> URI
linkURI' addBrackets (Link segments q_params) =
URI mempty -- No scheme (relative)
Nothing -- Or authority (relative)
(intercalate "/" $ map getEscaped segments)
(makeQueries q_params) mempty
module Servant.Utils.Links
{-# DEPRECATED "Use Servant.Links." #-}
( module Servant.Links )
where
makeQueries :: [Param] -> String
makeQueries [] = ""
makeQueries xs =
"?" <> intercalate "&" (fmap makeQuery xs)
makeQuery :: Param -> String
makeQuery (ArrayElemParam k v) = escape k <> style <> escape (Text.unpack v)
makeQuery (SingleParam k v) = escape k <> "=" <> escape (Text.unpack v)
makeQuery (FlagParam k) = escape k
style = case addBrackets of
LinkArrayElementBracket -> "[]="
LinkArrayElementPlain -> "="
escape :: String -> String
escape = escapeURIString isUnreserved
-- | Create a valid (by construction) relative URI with query params.
--
-- This function will only typecheck if `endpoint` is part of the API `api`
safeLink
:: forall endpoint api. (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
safeLink = safeLink' id
-- | More general 'safeLink'.
--
safeLink'
:: forall endpoint api a. (IsElem endpoint api, HasLink endpoint)
=> (Link -> a)
-> 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 a
safeLink' toA _ endpoint = toLink toA endpoint (Link mempty mempty)
-- | Create all links in an API.
--
-- Note that the @api@ type must be restricted to the endpoints that have
-- valid links to them.
--
-- >>> type API = "foo" :> Capture "name" Text :> Get '[JSON] Text :<|> "bar" :> Capture "name" Int :> Get '[JSON] Double
-- >>> let fooLink :<|> barLink = allLinks (Proxy :: Proxy API)
-- >>> :t fooLink
-- fooLink :: Text -> Link
-- >>> :t barLink
-- barLink :: Int -> Link
--
-- Note: nested APIs don't work well with this approach
--
-- >>> :kind! MkLink (Capture "nest" Char :> (Capture "x" Int :> Get '[JSON] Int :<|> Capture "y" Double :> Get '[JSON] Double)) Link
-- MkLink (Capture "nest" Char :> (Capture "x" Int :> Get '[JSON] Int :<|> Capture "y" Double :> Get '[JSON] Double)) Link :: *
-- = Char -> (Int -> Link) :<|> (Double -> Link)
allLinks
:: forall api. HasLink api
=> Proxy api
-> MkLink api Link
allLinks = allLinks' id
-- | More general 'allLinks'. See `safeLink'`.
allLinks'
:: forall api a. HasLink api
=> (Link -> a)
-> Proxy api
-> MkLink api a
allLinks' toA api = toLink toA api (Link mempty mempty)
-- | Construct a toLink for an endpoint.
class HasLink endpoint where
type MkLink endpoint (a :: *)
toLink
:: (Link -> a)
-> Proxy endpoint -- ^ The API endpoint you would like to point to
-> Link
-> MkLink endpoint a
-- Naked symbol instance
instance (KnownSymbol sym, HasLink sub) => HasLink (sym :> sub) where
type MkLink (sym :> sub) a = MkLink sub a
toLink toA _ =
toLink toA (Proxy :: Proxy sub) . addSegment (escaped seg)
where
seg = symbolVal (Proxy :: Proxy sym)
-- QueryParam instances
instance (KnownSymbol sym, ToHttpApiData v, HasLink sub, SBoolI (FoldRequired mods))
=> HasLink (QueryParam' mods sym v :> sub)
where
type MkLink (QueryParam' mods sym v :> sub) a = If (FoldRequired mods) v (Maybe v) -> MkLink sub a
toLink toA _ l mv =
toLink toA (Proxy :: Proxy sub) $
case sbool :: SBool (FoldRequired mods) of
STrue -> (addQueryParam . SingleParam k . toQueryParam) mv l
SFalse -> maybe id (addQueryParam . SingleParam k . toQueryParam) mv l
where
k :: String
k = symbolVal (Proxy :: Proxy sym)
instance (KnownSymbol sym, ToHttpApiData v, HasLink sub)
=> HasLink (QueryParams sym v :> sub)
where
type MkLink (QueryParams sym v :> sub) a = [v] -> MkLink sub a
toLink toA _ l =
toLink toA (Proxy :: Proxy sub) .
foldl' (\l' v -> addQueryParam (ArrayElemParam k (toQueryParam v)) l') l
where
k = symbolVal (Proxy :: Proxy sym)
instance (KnownSymbol sym, HasLink sub)
=> HasLink (QueryFlag sym :> sub)
where
type MkLink (QueryFlag sym :> sub) a = Bool -> MkLink sub a
toLink toA _ l False =
toLink toA (Proxy :: Proxy sub) l
toLink toA _ l True =
toLink toA (Proxy :: Proxy sub) $ addQueryParam (FlagParam k) l
where
k = symbolVal (Proxy :: Proxy sym)
-- :<|> instance - Generate all links at once
instance (HasLink a, HasLink b) => HasLink (a :<|> b) where
type MkLink (a :<|> b) r = MkLink a r :<|> MkLink b r
toLink toA _ l = toLink toA (Proxy :: Proxy a) l :<|> toLink toA (Proxy :: Proxy b) l
-- Misc instances
instance HasLink sub => HasLink (ReqBody' mods ct a :> sub) where
type MkLink (ReqBody' mods ct a :> sub) r = MkLink sub r
toLink toA _ = toLink toA (Proxy :: Proxy sub)
instance (ToHttpApiData v, HasLink sub)
=> HasLink (Capture' mods sym v :> sub)
where
type MkLink (Capture' mods sym v :> sub) a = v -> MkLink sub a
toLink toA _ l v =
toLink toA (Proxy :: Proxy sub) $
addSegment (escaped . Text.unpack $ toUrlPiece v) l
instance (ToHttpApiData v, HasLink sub)
=> HasLink (CaptureAll sym v :> sub)
where
type MkLink (CaptureAll sym v :> sub) a = [v] -> MkLink sub a
toLink toA _ l vs = toLink toA (Proxy :: Proxy sub) $
foldl' (flip $ addSegment . escaped . Text.unpack . toUrlPiece) l vs
instance HasLink sub => HasLink (Header' mods sym (a :: *) :> sub) where
type MkLink (Header' mods sym a :> sub) r = MkLink sub r
toLink = simpleToLink (Proxy :: Proxy sub)
instance HasLink sub => HasLink (Vault :> sub) where
type MkLink (Vault :> sub) a = MkLink sub a
toLink = simpleToLink (Proxy :: Proxy sub)
instance HasLink sub => HasLink (Description s :> sub) where
type MkLink (Description s :> sub) a = MkLink sub a
toLink = simpleToLink (Proxy :: Proxy sub)
instance HasLink sub => HasLink (Summary s :> sub) where
type MkLink (Summary s :> sub) a = MkLink sub a
toLink = simpleToLink (Proxy :: Proxy sub)
instance HasLink sub => HasLink (HttpVersion :> sub) where
type MkLink (HttpVersion:> sub) a = MkLink sub a
toLink = simpleToLink (Proxy :: Proxy sub)
instance HasLink sub => HasLink (IsSecure :> sub) where
type MkLink (IsSecure :> sub) a = MkLink sub a
toLink = simpleToLink (Proxy :: Proxy sub)
instance HasLink sub => HasLink (WithNamedContext name context sub) where
type MkLink (WithNamedContext name context sub) a = MkLink sub a
toLink toA _ = toLink toA (Proxy :: Proxy sub)
instance HasLink sub => HasLink (RemoteHost :> sub) where
type MkLink (RemoteHost :> sub) a = MkLink sub a
toLink = simpleToLink (Proxy :: Proxy sub)
instance HasLink sub => HasLink (BasicAuth realm a :> sub) where
type MkLink (BasicAuth realm a :> sub) r = MkLink sub r
toLink = simpleToLink (Proxy :: Proxy sub)
instance HasLink EmptyAPI where
type MkLink EmptyAPI a = EmptyAPI
toLink _ _ _ = EmptyAPI
-- Verb (terminal) instances
instance HasLink (Verb m s ct a) where
type MkLink (Verb m s ct a) r = r
toLink toA _ = toA
instance HasLink Raw where
type MkLink Raw a = a
toLink toA _ = toA
instance HasLink (Stream m fr ct a) where
type MkLink (Stream m fr ct a) r = r
toLink toA _ = toA
-- AuthProtext instances
instance HasLink sub => HasLink (AuthProtect tag :> sub) where
type MkLink (AuthProtect tag :> sub) a = MkLink sub a
toLink = simpleToLink (Proxy :: Proxy sub)
-- | Helper for implemneting 'toLink' for combinators not affecting link
-- structure.
simpleToLink
:: forall sub a combinator.
(HasLink sub, MkLink sub a ~ MkLink (combinator :> sub) a)
=> Proxy sub
-> (Link -> a)
-> Proxy (combinator :> sub)
-> Link
-> MkLink (combinator :> sub) a
simpleToLink _ toA _ = toLink toA (Proxy :: Proxy sub)
-- $setup
-- >>> import Servant.API
-- >>> import Data.Text (Text)
import Servant.Links

View file

@ -12,25 +12,32 @@ import Prelude ()
import Prelude.Compat
import Data.Aeson.Compat
import Data.ByteString.Char8 (ByteString, append, pack)
import qualified Data.ByteString.Lazy as BSL
import qualified Data.ByteString.Lazy.Char8 as BSL8
import Data.ByteString.Char8
(ByteString, append, pack)
import qualified Data.ByteString.Lazy as BSL
import qualified Data.ByteString.Lazy.Char8 as BSL8
import Data.Either
import Data.Function (on)
import Data.List (maximumBy)
import qualified Data.List.NonEmpty as NE
import Data.Maybe (fromJust, isJust, isNothing)
import Data.Function
(on)
import Data.List
(maximumBy)
import qualified Data.List.NonEmpty as NE
import Data.Maybe
(fromJust, isJust, isNothing)
import Data.Proxy
import Data.String (IsString (..))
import Data.String.Conversions (cs)
import qualified Data.Text as TextS
import qualified Data.Text.Encoding as TextSE
import qualified Data.Text.Lazy as TextL
import Data.String
(IsString (..))
import Data.String.Conversions
(cs)
import qualified Data.Text as TextS
import qualified Data.Text.Encoding as TextSE
import qualified Data.Text.Lazy as TextL
import GHC.Generics
import Test.Hspec
import Test.QuickCheck
import Text.Read (readMaybe)
import "quickcheck-instances" Test.QuickCheck.Instances ()
import "quickcheck-instances" Test.QuickCheck.Instances ()
import Text.Read
(readMaybe)
import Servant.API.ContentTypes

View file

@ -1,11 +1,11 @@
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE OverloadedStrings #-}
module Servant.API.ResponseHeadersSpec where
import Test.Hspec
import Test.Hspec
import Servant.API.Header
import Servant.API.ResponseHeaders
import Servant.API.Header
import Servant.API.ResponseHeaders
spec :: Spec
spec = describe "Servant.API.ResponseHeaders" $ do

View file

@ -1,22 +1,25 @@
{-# LANGUAGE CPP #-}
{-# LANGUAGE ConstraintKinds #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE PolyKinds #-}
{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE CPP #-}
{-# LANGUAGE ConstraintKinds #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE PolyKinds #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TypeOperators #-}
#if __GLASGOW_HASKELL__ < 709
{-# OPTIONS_GHC -fcontext-stack=41 #-}
#endif
module Servant.Utils.LinksSpec where
module Servant.LinksSpec where
import Data.Proxy (Proxy (..))
import Test.Hspec (Expectation, Spec, describe, it,
shouldBe)
import Data.String (fromString)
import Data.Proxy
(Proxy (..))
import Data.String
(fromString)
import Test.Hspec
(Expectation, Spec, describe, it, shouldBe)
import Servant.API
import Servant.Utils.Links
import Servant.API.Internal.Test.ComprehensiveAPI (comprehensiveAPIWithoutRaw)
import Servant.API.Internal.Test.ComprehensiveAPI
(comprehensiveAPIWithoutRaw)
import Servant.Links
type TestApi =
-- Capture and query params
@ -51,7 +54,7 @@ shouldBeLink link expected =
toUrlPiece link `shouldBe` fromString expected
spec :: Spec
spec = describe "Servant.Utils.Links" $ do
spec = describe "Servant.Links" $ do
it "generates correct links for capture query params" $ do
let l1 = Proxy :: Proxy ("hello" :> Capture "name" String :> Delete '[JSON] NoContent)
apiLink l1 "hi" `shouldBeLink` "hello/hi"

View file

@ -1,33 +0,0 @@
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE TypeOperators #-}
{-# OPTIONS_GHC -fno-warn-deprecations #-}
module Servant.Utils.EnterSpec where
import Test.Hspec (Spec)
import Servant.API
import Servant.Utils.Enter
-------------------------------------------------------------------------------
-- https://github.com/haskell-servant/servant/issues/734
-------------------------------------------------------------------------------
-- This didn't fail if executed in GHCi; cannot have as a doctest.
data App a
f :: App :~> App
f = NT id
server :: App Int :<|> (String -> App Bool)
server = undefined
server' :: App Int :<|> (String -> App Bool)
server' = enter f server
-------------------------------------------------------------------------------
-- Spec
-------------------------------------------------------------------------------
spec :: Spec
spec = return ()

View file

@ -13,9 +13,11 @@
-----------------------------------------------------------------------------
module Main where
import Build_doctests (flags, pkgs, module_sources)
import Data.Foldable (traverse_)
import Test.DocTest
import Build_doctests
(flags, module_sources, pkgs)
import Data.Foldable
(traverse_)
import Test.DocTest
main :: IO ()
main = do

View file

@ -1,5 +1,5 @@
# Let's try to keep resolver at the first day of the month
resolver: nightly-2018-03-01
resolver: nightly-2018-06-01
packages:
- servant-client/
- servant-client-core/
@ -8,18 +8,5 @@ packages:
- servant-server/
- servant/
extra-deps:
- cabal-doctest-1.0.6
- http-api-data-0.3.7.2
- http-types-0.12
- text-1.2.3.0
- aeson-1.3.0.0
- exceptions-0.10.0
- aeson-compat-0.3.7.1
- free-5.0.1
- lens-4.16
- random-bytestring-0.1.3
- pcg-random-0.1.3.5
# allow-newer: true # ignores all bounds, that's a sledgehammer
# - doc/tutorial/