{-# LANGUAGE DataKinds #-}
{-# LANGUAGE MultiParamTypeClasses #-}
{-# LANGUAGE NamedFieldPuns #-}
{-# LANGUAGE OverloadedStrings #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TypeApplications #-}
{-# LANGUAGE TypeFamilies #-}
{-# OPTIONS_HADDOCK prune not-home #-}
module System.TmpProc.Docker.Zipkin
(
TmpZipkin(..)
, aProc
, aHandle
, module System.TmpProc
)
where
import Control.Monad.IO.Class (MonadIO, liftIO)
import Control.Monad.Trace.Class (MonadTrace, alwaysSampled, rootSpan)
import qualified Data.ByteString.Char8 as C8
import Data.Proxy (Proxy (..))
import Data.String (fromString)
import qualified Data.Text as Text
import Network.HTTP.Client (HttpException)
import System.IO (Handle, IOMode (..), hPutStrLn,
openBinaryFile)
import qualified Monitor.Tracing.Zipkin as ZPK
import System.TmpProc (Connectable (..), HList (..),
HandlesOf, HostIpAddress,
Pinged (..), Proc (..),
ProcHandle (..), SvcURI, startupAll,
toPinged, withTmpConn)
aProc :: HList '[TmpZipkin]
aProc :: HList '[TmpZipkin]
aProc = TmpZipkin
TmpZipkin TmpZipkin -> HList '[] -> HList '[TmpZipkin]
forall anyTy (manyTys :: [*]).
anyTy -> HList manyTys -> HList (anyTy : manyTys)
`HCons` HList '[]
HNil
aHandle :: IO (HandlesOf '[TmpZipkin])
aHandle :: IO (HandlesOf '[TmpZipkin])
aHandle = HList '[TmpZipkin] -> IO (HandlesOf '[TmpZipkin])
forall (procs :: [*]).
AreProcs procs =>
HList procs -> IO (HandlesOf procs)
startupAll HList '[TmpZipkin]
aProc
data TmpZipkin = TmpZipkin
instance Proc TmpZipkin where
type Image TmpZipkin = "openzipkin/zipkin-slim"
type Name TmpZipkin = "a-zipkin-server"
uriOf :: Text -> SvcURI
uriOf = Text -> SvcURI
mkUri'
runArgs :: [Text]
runArgs = []
ping :: ProcHandle TmpZipkin -> IO Pinged
ping ProcHandle TmpZipkin
h = Proxy HttpException -> IO () -> IO Pinged
forall e a. Exception e => Proxy e -> IO a -> IO Pinged
toPinged @HttpException Proxy HttpException
forall k (t :: k). Proxy t
Proxy (IO () -> IO Pinged) -> IO () -> IO Pinged
forall a b. (a -> b) -> a -> b
$ do
Zipkin
z <- ProcHandle TmpZipkin -> IO Zipkin
openConn' ProcHandle TmpZipkin
h
TraceT IO () -> Zipkin -> IO ()
forall (m :: * -> *) a. TraceT m a -> Zipkin -> m a
ZPK.run TraceT IO ()
forall (m :: * -> *). (MonadIO m, MonadTrace m) => m ()
tracedPing Zipkin
z
Zipkin -> IO ()
forall (m :: * -> *). MonadIO m => Zipkin -> m ()
ZPK.publish Zipkin
z
reset :: ProcHandle TmpZipkin -> IO ()
reset ProcHandle TmpZipkin
_ = () -> IO ()
forall (f :: * -> *) a. Applicative f => a -> f a
pure ()
instance Connectable TmpZipkin where
type Conn TmpZipkin = ZPK.Zipkin
openConn :: ProcHandle TmpZipkin -> IO (Conn TmpZipkin)
openConn = ProcHandle TmpZipkin -> IO (Conn TmpZipkin)
ProcHandle TmpZipkin -> IO Zipkin
openConn'
closeConn :: Conn TmpZipkin -> IO ()
closeConn Conn TmpZipkin
_ = () -> IO ()
forall (f :: * -> *) a. Applicative f => a -> f a
pure ()
openConn' :: ProcHandle TmpZipkin -> IO ZPK.Zipkin
openConn' :: ProcHandle TmpZipkin -> IO Zipkin
openConn' = Settings -> IO Zipkin
forall (m :: * -> *). MonadIO m => Settings -> m Zipkin
ZPK.new (Settings -> IO Zipkin)
-> (ProcHandle TmpZipkin -> Settings)
-> ProcHandle TmpZipkin
-> IO Zipkin
forall b c a. (b -> c) -> (a -> b) -> a -> c
. ProcHandle TmpZipkin -> Settings
toSettings
mkUri' :: HostIpAddress -> SvcURI
mkUri' :: Text -> SvcURI
mkUri' Text
ip = SvcURI
"http://" SvcURI -> SvcURI -> SvcURI
forall a. Semigroup a => a -> a -> a
<> String -> SvcURI
C8.pack (Text -> String
Text.unpack Text
ip) SvcURI -> SvcURI -> SvcURI
forall a. Semigroup a => a -> a -> a
<> SvcURI
"/"
toSettings :: ProcHandle TmpZipkin -> ZPK.Settings
toSettings :: ProcHandle TmpZipkin -> Settings
toSettings = String -> Settings
forall a. IsString a => String -> a
fromString (String -> Settings)
-> (ProcHandle TmpZipkin -> String)
-> ProcHandle TmpZipkin
-> Settings
forall b c a. (b -> c) -> (a -> b) -> a -> c
. Text -> String
Text.unpack (Text -> String)
-> (ProcHandle TmpZipkin -> Text) -> ProcHandle TmpZipkin -> String
forall b c a. (b -> c) -> (a -> b) -> a -> c
. ProcHandle TmpZipkin -> Text
forall a. ProcHandle a -> Text
hAddr
pingAction :: IO ()
pingAction :: IO ()
pingAction = IO Handle
devNull IO Handle -> (Handle -> IO ()) -> IO ()
forall (m :: * -> *) a b. Monad m => m a -> (a -> m b) -> m b
>>= (Handle -> String -> IO ()) -> String -> Handle -> IO ()
forall a b c. (a -> b -> c) -> b -> a -> c
flip Handle -> String -> IO ()
hPutStrLn String
"the trace of this will be sent as a ping"
tracedPing :: (MonadIO m, MonadTrace m) => m ()
tracedPing :: m ()
tracedPing = SamplingPolicy -> Text -> m () -> m ()
forall (m :: * -> *) a.
MonadTrace m =>
SamplingPolicy -> Text -> m a -> m a
rootSpan SamplingPolicy
alwaysSampled Text
"ping" (m () -> m ()) -> m () -> m ()
forall a b. (a -> b) -> a -> b
$ IO () -> m ()
forall (m :: * -> *) a. MonadIO m => IO a -> m a
liftIO IO ()
pingAction
devNull :: IO Handle
devNull :: IO Handle
devNull = String -> IOMode -> IO Handle
openBinaryFile String
"/dev/null" IOMode
WriteMode