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{-# LANGUAGE DataKinds #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE RankNTypes #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TypeApplications #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE TypeOperators #-}
-- | simple server offering linting "as a service"
module Main where
import Universum
import Control.Concurrent (threadDelay)
import Control.Concurrent.Async (async, link, waitEither_)
import Control.Concurrent.STM.TQueue (TQueue, newTQueueIO,
writeTQueue)
import qualified Data.Text as T
import Fmt ((+|), (|+))
import Handlers (AdminOverview (AdminOverview),
MapService (MapService),
stateImpl, statusImpl)
import HtmlOrphans ()
import Network.HTTP.Client (defaultManagerSettings,
newManager)
import Network.Wai.Handler.Warp (defaultSettings,
runSettings, setPort)
import Network.Wai.Middleware.Gzip (def)
import Network.Wai.Middleware.RequestLogger (OutputFormat (..),
RequestLoggerSettings (..),
mkRequestLogger)
import Servant (Application, Capture,
Get, JSON, PlainText,
Post, Raw, ReqBody,
Server, serve,
type (:<|>) (..),
type (:>))
import Servant.HTML.Lucid (HTML)
import Servant.Server.StaticFiles (serveDirectoryWebApp)
import Server (JobStatus, Org (..),
ServerState, Sha1,
emptyState, exneuland,
interval, loadConfig,
orgs, port, token,
unState, verbose)
import Worker (Job (Job), linterThread)
import Servant.API (Header)
import Servant.Client (ClientM, client,
mkClientEnv, runClientM)
type family PolyEndpoint method format payload where
PolyEndpoint Get format payload =
Get format payload
PolyEndpoint Post format payload =
Header "Auth" Text :> ReqBody format payload :> Post '[PlainText] Text
type MapServiceAPI method =
"api" :> "maps" :> "list" :> PolyEndpoint method '[JSON] MapService
-- | abstract api
type API format =
"status" :> Capture "org" Text :> Capture "jobid" Sha1 :> Get '[format] JobStatus
:<|> "admin" :> "overview" :> Get '[format] AdminOverview
-- | actual set of routes: api for json & html + static pages from disk
type Routes = "api" :> API JSON
:<|> MapServiceAPI Get
:<|> API HTML -- websites mirror the API exactly
:<|> Raw
-- | API's implementation
jsonAPI :: forall format. MVar ServerState -> Server (API format)
jsonAPI state = statusImpl state
:<|> stateImpl @AdminOverview state
-- | Complete set of routes: API + HTML sites
server :: MVar ServerState -> Server Routes
server state = jsonAPI @JSON state
:<|> stateImpl @MapService state
:<|> jsonAPI @HTML state
:<|> serveDirectoryWebApp "./static"
app :: MVar ServerState -> Application
app = serve (Proxy @Routes) . server
postNewMaps :: Maybe Text -> MapService -> ClientM Text
postNewMaps = client (Proxy @(MapServiceAPI Post))
main :: IO ()
main = do
config <- loadConfig "./config.toml"
state <- newMVar (emptyState config)
queue :: TQueue Job <- newTQueueIO
-- TODO: i really don't like all this cli logging stuff, replace it with
-- fast-logger at some point …
loggerMiddleware <- mkRequestLogger
$ def { outputFormat = Detailed (view verbose config) }
putTextLn "reading config …"
putTextLn $ T.concat $ map showInfo (view orgs config)
-- periodically ‘pokes’ jobs to re-lint each repo
poker <- async $ forever $ do
readMVar state >>= \state ->
print (length $ view unState state)
atomically $ forM_ (view orgs config) $ \org ->
forM_ (orgRepos org) $ \repo ->
writeTQueue queue (Job repo org)
-- microseconds for some reason
threadDelay (view interval config * 1000000)
-- TODO: what about tls / https?
whenJust (view exneuland config) $ \baseurl -> do
manager' <- newManager defaultManagerSettings
updater <- async $ forever $ do
done <- readMVar state
res <- runClientM
(postNewMaps (view token config) (MapService done))
(mkClientEnv manager' baseurl)
print res
threadDelay (view interval config * 1000000)
link updater
-- spawns threads for each job in the queue
linter <- async $ void $ linterThread config queue state
link linter
link poker
let warpsettings =
setPort (view port config)
defaultSettings
runSettings warpsettings
. loggerMiddleware
$ app state
waitEither_ linter poker
where
showInfo org =
"→ org "+|orgSlug org|+" divoc ("+|length (orgRepos org)|+" repositoryies)\n" :: Text
|
