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https://github.com/haskell-nix/hnix-store.git
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remote: add StoreConnection, reclaim runStoreSocket, now greetServer
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@ -114,7 +114,7 @@ library
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, data-default-class
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, dependent-sum > 0.7
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, dependent-sum-template >= 0.2.0.1 && < 0.3
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, directory
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-- , directory
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, dlist >= 1.0
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, exceptions
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, generic-arbitrary < 1.1
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@ -10,11 +10,11 @@ module System.Nix.Store.Remote
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, MonadStore
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-- * Runners
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, runStore
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, runStoreOpts
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, runStoreOptsTCP
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, runStoreConnection
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, runStoreSocket
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-- ** Daemon
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, runDaemon
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, runDaemonOpts
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, runDaemonConnection
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, justdoit
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) where
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@ -30,15 +30,16 @@ import System.Nix.Store.Remote.MonadStore
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, RemoteStoreT
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, RemoteStoreError(RemoteStoreError_GetAddrInfoFailed))
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import System.Nix.Store.Remote.Client
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import System.Nix.Store.Remote.Server (WorkerHelper, runProxyDaemon)
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import System.Nix.Store.Remote.Types
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import qualified Control.Monad.Catch
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import qualified Network.Socket
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import qualified System.Directory
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-- see TODO bellow
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--import qualified System.Directory
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-- wip daemon
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-- wip justdoit
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import System.Nix.StorePath (StorePath)
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import System.Nix.Store.Remote.Server (WorkerHelper, runDaemonSocket)
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import qualified System.Nix.StorePath
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-- * Compat
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@ -53,45 +54,22 @@ runStore
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)
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=> RemoteStoreT m a
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-> Run m a
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runStore = runStoreOpts defaultSockPath
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runStore = runStoreConnection def
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defaultSockPath :: String
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defaultSockPath = "/nix/var/nix/daemon-socket/socket"
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runStoreOpts
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runStoreConnection
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:: ( MonadIO m
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, MonadMask m
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)
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=> FilePath
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=> StoreConnection
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-> RemoteStoreT m a
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-> Run m a
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runStoreOpts socketPath =
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runStoreOpts'
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Network.Socket.AF_UNIX
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(SockAddrUnix socketPath)
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runStoreConnection sc k =
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connectionToSocket sc
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>>= \case
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Left e -> pure (Left e, mempty)
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Right (fam, sock) -> runStoreSocket fam sock k
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runStoreOptsTCP
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:: ( MonadIO m
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, MonadMask m
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)
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=> String
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-> Int
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-> RemoteStoreT m a
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-> Run m a
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runStoreOptsTCP host port code = do
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addrInfo <- liftIO $ Network.Socket.getAddrInfo
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(Just Network.Socket.defaultHints)
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(Just host)
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(Just $ show port)
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case addrInfo of
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(sockAddr:_) ->
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runStoreOpts'
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(Network.Socket.addrFamily sockAddr)
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(Network.Socket.addrAddress sockAddr)
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code
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_ -> pure (Left RemoteStoreError_GetAddrInfoFailed, mempty)
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runStoreOpts'
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runStoreSocket
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:: ( MonadIO m
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, MonadMask m
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)
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@ -99,21 +77,25 @@ runStoreOpts'
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-> SockAddr
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-> RemoteStoreT m a
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-> Run m a
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runStoreOpts' sockFamily sockAddr code =
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runStoreSocket sockFamily sockAddr code =
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Control.Monad.Catch.bracket
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(liftIO open)
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(liftIO . Network.Socket.close . hasStoreSocket)
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(\s -> runRemoteStoreT s $ runStoreSocket code)
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(\s -> runRemoteStoreT s $ greetServer >> code)
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where
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open = do
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soc <- Network.Socket.socket sockFamily Network.Socket.Stream 0
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soc <-
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Network.Socket.socket
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sockFamily
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Network.Socket.Stream
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Network.Socket.defaultProtocol
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Network.Socket.connect soc sockAddr
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pure soc
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justdoit :: Run IO (Bool, Bool)
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justdoit = do
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runDaemonOpts handler "/tmp/dsock" $
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runStoreOpts "/tmp/dsock"
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runDaemonConnection handler (StoreConnection_Socket "/tmp/dsock") $
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runStoreConnection (StoreConnection_Socket "/tmp/dsock")
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$ do
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a <- isValidPath pth
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b <- isValidPath pth
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@ -140,31 +122,81 @@ runDaemon
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-> m a
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-> m a
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runDaemon workerHelper =
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runDaemonOpts
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runDaemonConnection
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workerHelper
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defaultSockPath
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def
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-- | Run an emulated nix daemon on given socket address.
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-- | Run an emulated nix daemon using given @StoreConnection@
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-- the deamon will close when the continuation returns.
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runDaemonOpts
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runDaemonConnection
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:: forall m a
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. ( MonadIO m
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, MonadConc m
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)
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=> WorkerHelper m
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-> FilePath
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-> StoreConnection
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-> m a
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-> m a
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runDaemonOpts workerHelper f k = Control.Monad.Catch.bracket
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runDaemonConnection workerHelper sc k =
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connectionToSocket sc
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>>= \case
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Left e -> error $ show e
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Right (fam, sock) -> runDaemonSocket workerHelper fam sock k
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-- | Run an emulated nix daemon using given @StoreConnection@
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-- the deamon will close when the continuation returns.
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runDaemonSocket
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:: forall m a
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. ( MonadIO m
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, MonadConc m
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)
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=> WorkerHelper m
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-> Family
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-> SockAddr
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-> m a
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-> m a
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runDaemonSocket workerHelper sockFamily sockAddr k =
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Control.Monad.Catch.bracket
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(liftIO
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$ Network.Socket.socket
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Network.Socket.AF_UNIX
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sockFamily
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Network.Socket.Stream
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Network.Socket.defaultProtocol
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)
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(\lsock -> liftIO $ Network.Socket.close lsock *> System.Directory.removeFile f)
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(\lsock -> liftIO $ Network.Socket.close lsock) -- *> System.Directory.removeFile f)
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$ \lsock -> do
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-- ^^^^^^^^^^^^
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-- TODO: this: --------------------------------------------------////////////
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liftIO $ Network.Socket.bind lsock (SockAddrUnix f)
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runDaemonSocket workerHelper lsock k
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-- TODO: this: -------------------------------------------------------////////////
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-- should really be
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-- a file lock followed by unlink *before* bind rather than after close. If
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-- the program crashes (or loses power or something) then a stale unix
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-- socket will stick around and prevent the daemon from starting. using a
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-- lock file instead means only one "copy" of the daemon can hold the lock,
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-- and can safely unlink the socket before binding no matter how shutdown
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-- occured.
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-- set up the listening socket
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liftIO $ Network.Socket.bind lsock sockAddr
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runProxyDaemon workerHelper lsock k
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connectionToSocket
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:: MonadIO m
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=> StoreConnection
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-> m (Either RemoteStoreError (Family, SockAddr))
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connectionToSocket (StoreConnection_Socket (StoreSocketPath f)) =
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pure $ pure
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( Network.Socket.AF_UNIX
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, SockAddrUnix f
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)
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connectionToSocket (StoreConnection_TCP StoreTCP{..}) = do
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addrInfo <- liftIO $ Network.Socket.getAddrInfo
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(Just Network.Socket.defaultHints)
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(Just storeTCPHost)
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(Just $ show storeTCPPort)
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case addrInfo of
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(sockAddr:_) ->
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pure $ pure
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( Network.Socket.addrFamily sockAddr
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, Network.Socket.addrAddress sockAddr
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)
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_ -> pure (Left RemoteStoreError_GetAddrInfoFailed)
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@ -1,6 +1,6 @@
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module System.Nix.Store.Remote.Client.Core
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( Run
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, runStoreSocket
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, greetServer
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, doReq
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) where
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@ -78,23 +78,10 @@ doReq = \case
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$ getReplyS @a
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)
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runStoreSocket
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:: MonadRemoteStore m
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=> m a
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-> m a
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runStoreSocket code = do
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ClientHandshakeOutput{..}
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<- greet
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setProtoVersion clientHandshakeOutputLeastCommonVersion
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code
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where
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greet
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greetServer
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:: MonadRemoteStore m
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=> m ClientHandshakeOutput
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greet = do
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greetServer = do
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sockPutS
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(mapErrorS
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RemoteStoreError_SerializerHandshake
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@ -1,6 +1,10 @@
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{-# LANGUAGE OverloadedStrings #-}
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{-# LANGUAGE Rank2Types #-}
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module System.Nix.Store.Remote.Server where
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module System.Nix.Store.Remote.Server
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( runProxyDaemon
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, WorkerHelper
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)
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where
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import Control.Concurrent.Classy.Async
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import Control.Monad (join, void, when)
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@ -41,7 +45,7 @@ type WorkerHelper m
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-- | Run an emulated nix daemon on given socket address.
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-- The deamon will close when the continuation returns.
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runDaemonSocket
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runProxyDaemon
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:: forall m a
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. ( MonadIO m
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, MonadConc m
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@ -50,7 +54,7 @@ runDaemonSocket
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-> Socket
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-> m a
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-> m a
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runDaemonSocket workerHelper lsock k = do
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runProxyDaemon workerHelper lsock k = do
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liftIO $ listen lsock maxListenQueue
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liftIO $ Data.Text.IO.putStrLn "listening"
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@ -259,14 +263,14 @@ enqueueMsg x l = updateLogger x $ \st@(TunnelLoggerState c p) -> case c of
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True -> (st, sockPutS logger l)
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False -> (TunnelLoggerState c (l:p), pure ())
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log
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_log
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:: ( MonadRemoteStore m
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, MonadError LoggerSError m
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)
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=> TunnelLogger
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-> Text
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-> m ()
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log l s = enqueueMsg l (Logger_Next s)
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_log l s = enqueueMsg l (Logger_Next s)
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startWork
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:: MonadRemoteStore m
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@ -292,12 +296,12 @@ stopWork x = updateLogger x $ \_ -> (,)
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--
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-- Unlike 'stopWork', this function may be called at any time to (try) to end a
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-- session with an error.
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stopWorkOnError
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_stopWorkOnError
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:: MonadRemoteStore m
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=> TunnelLogger
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-> ErrorInfo
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-> m Bool
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stopWorkOnError x ex = updateLogger x $ \st ->
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_stopWorkOnError x ex = updateLogger x $ \st ->
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case _tunnelLoggerState_canSendStderr st of
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False -> (st, pure False)
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True -> (,) (TunnelLoggerState False []) $ do
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@ -1,11 +1,15 @@
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{-# OPTIONS_GHC -Wno-orphans #-}
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{-# LANGUAGE GeneralizedNewtypeDeriving #-}
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module System.Nix.Store.Remote.Types.StoreConfig
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( ProtoStoreConfig(..)
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, StoreConfig(..)
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, StoreSocketPath(..)
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, StoreTCP(..)
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, StoreConnection(..)
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, HasStoreSocket(..)
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) where
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import Data.Default.Class (Default(def))
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import Data.String (IsString)
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import GHC.Generics (Generic)
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import Network.Socket (Socket)
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import System.Nix.StorePath (HasStoreDir(..), StoreDir)
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@ -34,7 +38,24 @@ instance HasStoreDir ProtoStoreConfig where
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instance HasProtoVersion ProtoStoreConfig where
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hasProtoVersion = protoStoreConfigProtoVersion
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data StoreConfig = StoreConfig
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{ storeConfigDir :: Maybe StoreDir
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, storeConfigSocketPath :: FilePath
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newtype StoreSocketPath = StoreSocketPath
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{ unStoreSocketPath :: FilePath
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}
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deriving newtype (IsString)
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deriving stock (Eq, Generic, Ord, Show)
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instance Default StoreSocketPath where
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def = StoreSocketPath "/nix/var/nix/daemon-socket/socket"
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data StoreTCP = StoreTCP
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{ storeTCPHost :: String
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, storeTCPPort :: Int
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} deriving (Eq, Generic, Ord, Show)
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data StoreConnection
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= StoreConnection_Socket StoreSocketPath
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| StoreConnection_TCP StoreTCP
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deriving (Eq, Generic, Ord, Show)
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instance Default StoreConnection where
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def = StoreConnection_Socket def
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@ -115,7 +115,7 @@ startDaemon fp = do
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procHandle <- createProcessEnv fp "nix-daemon" []
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waitSocket sockFp 30
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pure ( procHandle
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, runStoreOpts sockFp
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, runStoreConnection (StoreConnection_Socket (StoreSocketPath sockFp))
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. (setStoreDir (StoreDir $ Data.ByteString.Char8.pack $ fp </> "store")
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>>
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)
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