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authorAmir Saeid <amir@glgdgt.com>2021-07-02 18:52:25 +0100
committerAmir Saeid <amir@glgdgt.com>2021-07-13 08:40:45 +0100
commit084c16f5b3c49aa6bd1bc85bd14857e13cb20cac (patch)
treed645004a601725e1d52c1b16ff53dc8e9656b41e /src/Xmobar/Plugins/Kraken.hs
parentfe92b6e5912c58890a2c393df73b6ab97c8d7449 (diff)
downloadxmobar-084c16f5b3c49aa6bd1bc85bd14857e13cb20cac.tar.gz
xmobar-084c16f5b3c49aa6bd1bc85bd14857e13cb20cac.tar.bz2
Reconnect on ConnectionClosed exception
Diffstat (limited to 'src/Xmobar/Plugins/Kraken.hs')
-rw-r--r--src/Xmobar/Plugins/Kraken.hs13
1 files changed, 9 insertions, 4 deletions
diff --git a/src/Xmobar/Plugins/Kraken.hs b/src/Xmobar/Plugins/Kraken.hs
index afe04db..4a15199 100644
--- a/src/Xmobar/Plugins/Kraken.hs
+++ b/src/Xmobar/Plugins/Kraken.hs
@@ -4,17 +4,18 @@
module Xmobar.Plugins.Kraken (Kraken(..)) where
import Control.Concurrent
-import Control.Monad (forever, mzero, void)
+import Control.Exception (catch)
+import Control.Monad (forever, mzero, void, when)
import Data.Aeson
import Data.Aeson.Types (Parser, typeMismatch)
import Data.List (sort)
import Data.Text (Text, pack, unpack)
import GHC.Generics
+import Network.WebSockets (ClientApp, ConnectionException(ConnectionClosed), receiveData, sendTextData)
import System.IO (hPutStrLn, stderr)
import Text.Read (readMaybe)
-import Xmobar.Run.Exec(Exec(..))
-import Network.WebSockets (ClientApp, receiveData, sendTextData)
import Wuss (runSecureClient)
+import Xmobar.Run.Exec(Exec(..))
import qualified Data.HashMap.Lazy as HML (lookup)
import qualified Data.Map as Map
@@ -27,7 +28,7 @@ instance Exec Kraken where
alias (Kraken _ a) = a
start (Kraken ps _) cb = do
mvar <- newEmptyMVar
- forkIO $ runSecureClient "ws.kraken.com" 443 "/" $ wsClientApp ps mvar
+ forkIO $ reconnectOnConnectionClose $ wsClientApp ps mvar
let loop mv p = do
v <- takeMVar mv
let g = Map.insert (unpack $ fst v) (snd v) p
@@ -40,6 +41,10 @@ instance Exec Kraken where
display :: Map.Map String Double -> String
display m = unwords $ sort $ map (\x -> fst x ++ ": " ++ show (snd x)) $ Map.toList m
+ reconnectOnConnectionClose :: ClientApp () -> IO ()
+ reconnectOnConnectionClose ws = runSecureClient "ws.kraken.com" 443 "/" ws
+ `catch` (\e -> when (e == ConnectionClosed) $ reconnectOnConnectionClose ws)
+
wsClientApp :: [String] -> MVar (Text, Double) -> ClientApp ()
wsClientApp ps mvar connection = do
sendTextData connection (encode Subscribe { event = "subscribe", pair = map pack ps, subscription = Subscription { name = "ticker" }})