61 lines
1.8 KiB
Haskell
61 lines
1.8 KiB
Haskell
{-# LANGUAGE OverloadedStrings #-}
|
|
|
|
-- we export a bit more than we have to, because the https module can reuse these things.
|
|
module Backend.Http
|
|
( HttpConfiguration (..),
|
|
httpDefaultSettings,
|
|
httpDefaultSetting,
|
|
forkHttpBackend,
|
|
httpConfigCodec,
|
|
httpConfigsCodec,
|
|
httpToWarpConfig,
|
|
)
|
|
where
|
|
|
|
import Config
|
|
import Control.Concurrent.MVar(MVar)
|
|
import Data.String
|
|
import qualified Data.Text as T
|
|
import qualified Network.Wai as Wai
|
|
import Network.Wai.Handler.Warp as HTTP
|
|
import Toml (TomlCodec, (.=))
|
|
import qualified Toml
|
|
|
|
type BindPreference = String
|
|
|
|
_BindPreference :: Toml.TomlBiMap BindPreference Toml.AnyValue
|
|
_BindPreference = Toml._String
|
|
|
|
bindPreference :: Toml.Key -> TomlCodec BindPreference
|
|
bindPreference = Toml.match _BindPreference
|
|
|
|
data HttpConfiguration = HttpConfiguration
|
|
{ instanceName :: T.Text,
|
|
port :: Int,
|
|
bindPref :: BindPreference
|
|
}
|
|
|
|
httpDefaultSetting :: HttpConfiguration
|
|
httpDefaultSetting = HttpConfiguration "http" 80 "*"
|
|
|
|
httpDefaultSettings :: [HttpConfiguration]
|
|
httpDefaultSettings = [httpDefaultSetting]
|
|
|
|
httpConfigCodec :: TomlCodec HttpConfiguration
|
|
httpConfigCodec =
|
|
HttpConfiguration
|
|
<$> Toml.text "InstanceName" .= instanceName
|
|
<*> Toml.int "Port" .= port
|
|
<*> bindPreference "Bind" .= bindPref
|
|
|
|
httpConfigsCodec :: TomlCodec [HttpConfiguration]
|
|
httpConfigsCodec = Toml.list httpConfigCodec "http"
|
|
|
|
forkHttpBackend :: Wai.Application -> FilePath -> IO [MVar ()]
|
|
forkHttpBackend app configFile = forkWithConfigs (backend app) httpConfigsCodec configFile
|
|
|
|
httpToWarpConfig :: HttpConfiguration -> HTTP.Settings
|
|
httpToWarpConfig config = HTTP.setPort (port config) $ HTTP.setHost (fromString $ bindPref config) $ HTTP.defaultSettings
|
|
|
|
backend :: Wai.Application -> HttpConfiguration -> IO ()
|
|
backend app config = HTTP.runSettings (httpToWarpConfig config) $ app
|