diff options
Diffstat (limited to 'src/Erebos/Network.hs')
| -rw-r--r-- | src/Erebos/Network.hs | 60 |
1 files changed, 50 insertions, 10 deletions
diff --git a/src/Erebos/Network.hs b/src/Erebos/Network.hs index d8e868a..fb2b5e9 100644 --- a/src/Erebos/Network.hs +++ b/src/Erebos/Network.hs @@ -24,6 +24,7 @@ module Erebos.Network ( sendToPeerStored, sendManyToPeerStored, sendToPeerWith, runPeerService, + modifyServiceGlobalState, discoveryPort, ) where @@ -300,13 +301,18 @@ startServer serverOptions serverOrigHead logd' serverServices = do announceUpdate idt forM_ serverServices $ \(SomeService service _) -> do - forM_ (serviceStorageWatchers service) $ \(SomeStorageWatcher sel act) -> do - watchHeadWith serverOrigHead (sel . headStoredObject) $ \x -> do - withMVar serverPeers $ mapM_ $ \peer -> atomically $ do - readTVar (peerIdentityVar peer) >>= \case - PeerIdentityFull _ -> writeTQueue serverIOActions $ do - runPeerService peer $ act x - _ -> return () + forM_ (serviceStorageWatchers service) $ \case + SomeStorageWatcher sel act -> do + watchHeadWith serverOrigHead (sel . headStoredObject) $ \x -> do + withMVar serverPeers $ mapM_ $ \peer -> atomically $ do + readTVar (peerIdentityVar peer) >>= \case + PeerIdentityFull _ -> writeTQueue serverIOActions $ do + runPeerService peer $ act x + _ -> return () + GlobalStorageWatcher sel act -> do + watchHeadWith serverOrigHead (sel . headStoredObject) $ \x -> do + atomically $ writeTQueue serverIOActions $ do + act server x forkServerThread server $ forever $ do (msg, saddr) <- S.recvFrom sock 4096 @@ -391,8 +397,21 @@ startServer serverOptions serverOrigHead logd' serverServices = do return server stopServer :: Server -> IO () -stopServer Server {..} = do - mapM_ killThread =<< takeMVar serverThreads +stopServer server@Server {..} = do + withMVar serverPeers $ \peers -> do + ( global, peerStates ) <- atomically $ (,) + <$> takeTMVar serverServiceStates + <*> (forM (M.elems peers) $ \p@Peer {..} -> ( p, ) <$> takeTMVar peerServiceState) + + forM_ global $ \(SomeServiceGlobalState (proxy :: Proxy s) gs) -> do + ps <- forM peerStates $ \( peer, states ) -> + return $ ( peer, ) $ case M.lookup (serviceID proxy) states of + Just (SomeServiceState (_ :: Proxy ps) pstate) + | Just (Refl :: s :~: ps) <- eqT + -> pstate + _ -> emptyServiceState proxy + serviceStopServer proxy server gs ps + mapM_ killThread =<< takeMVar serverThreads dataResponseWorker :: Server -> IO () dataResponseWorker server = forever $ do @@ -899,7 +918,7 @@ sendToPeerWith peer fobj = do Left err -> throwError err -lookupService :: forall s. Service s => Proxy s -> [SomeService] -> Maybe (SomeService, ServiceAttributes s) +lookupService :: forall s proxy. Service s => proxy s -> [SomeService] -> Maybe (SomeService, ServiceAttributes s) lookupService proxy (service@(SomeService (_ :: Proxy t) attr) : rest) | Just (Refl :: s :~: t) <- eqT = Just (service, attr) | otherwise = lookupService proxy rest @@ -954,6 +973,27 @@ runPeerServiceOn mbservice peer handler = liftIO $ do _ -> atomically $ do logd $ "unhandled service '" ++ show (toUUID svc) ++ "'" +modifyServiceGlobalState + :: forall s a m proxy. (Service s, MonadIO m, MonadError String m) + => Server -> proxy s + -> (ServiceGlobalState s -> ( ServiceGlobalState s, a )) + -> m a +modifyServiceGlobalState server proxy f = do + let svc = serviceID proxy + case lookupService proxy (serverServices server) of + Just ( service, _ ) -> do + liftIO $ atomically $ do + global <- takeTMVar (serverServiceStates server) + ( global', res ) <- case fromMaybe (someServiceEmptyGlobalState service) $ M.lookup svc global of + SomeServiceGlobalState (_ :: Proxy gs) gs -> do + (Refl :: s :~: gs) <- return $ fromMaybe (error "service ID mismatch in global map") eqT + let ( gs', res ) = f gs + return ( M.insert svc (SomeServiceGlobalState (Proxy @s) gs') global, res ) + putTMVar (serverServiceStates server) global' + return res + Nothing -> do + throwError $ "unhandled service '" ++ show (toUUID svc) ++ "'" + foreign import ccall unsafe "Network/ifaddrs.h join_multicast" cJoinMulticast :: CInt -> Ptr CSize -> IO (Ptr Word32) foreign import ccall unsafe "Network/ifaddrs.h local_addresses" cLocalAddresses :: Ptr CSize -> IO (Ptr InetAddress) |