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{- git-remote-daemon data types.
-
- Copyright 2014 Joey Hess <id@joeyh.name>
-
- Licensed under the GNU GPL version 3 or higher.
-}
{-# LANGUAGE TypeSynonymInstances, FlexibleInstances #-}
{-# OPTIONS_GHC -fno-warn-orphans #-}
module RemoteDaemon.Types where
import Common
import qualified Annex
import qualified Git.Types as Git
import qualified Utility.SimpleProtocol as Proto
import Network.URI
import Control.Concurrent
import Control.Concurrent.STM
-- The URI of a remote is used to uniquely identify it (names change..)
newtype RemoteURI = RemoteURI URI
deriving (Show)
-- A Transport for a particular git remote consumes some messages
-- from a Chan, and emits others to another Chan.
type Transport = RemoteRepo -> RemoteURI -> TransportHandle -> TChan Consumed -> TChan Emitted -> IO ()
type RemoteRepo = Git.Repo
type LocalRepo = Git.Repo
-- All Transports share a single AnnexState MVar
--
-- Different TransportHandles may have different versions of the LocalRepo.
-- (For example, the ssh transport modifies it to enable ssh connection
-- caching.)
data TransportHandle = TransportHandle LocalRepo (MVar Annex.AnnexState)
-- Messages that the daemon emits.
data Emitted
= CONNECTED RemoteURI
| DISCONNECTED RemoteURI
| SYNCING RemoteURI
| DONESYNCING RemoteURI Bool
| WARNING RemoteURI String
deriving (Show)
-- Messages that the deamon consumes.
data Consumed
= PAUSE
| LOSTNET
| RESUME
| CHANGED RefList
| RELOAD
| STOP
deriving (Show)
type RefList = [Git.Ref]
instance Proto.Sendable Emitted where
formatMessage (CONNECTED remote) =
["CONNECTED", Proto.serialize remote]
formatMessage (DISCONNECTED remote) =
["DISCONNECTED", Proto.serialize remote]
formatMessage (SYNCING remote) =
["SYNCING", Proto.serialize remote]
formatMessage (DONESYNCING remote status) =
["DONESYNCING", Proto.serialize remote, Proto.serialize status]
formatMessage (WARNING remote message) =
["WARNING", Proto.serialize remote, Proto.serialize message]
instance Proto.Sendable Consumed where
formatMessage PAUSE = ["PAUSE"]
formatMessage LOSTNET = ["LOSTNET"]
formatMessage RESUME = ["RESUME"]
formatMessage (CHANGED refs) =["CHANGED", Proto.serialize refs]
formatMessage RELOAD = ["RELOAD"]
formatMessage STOP = ["STOP"]
instance Proto.Receivable Emitted where
parseCommand "CONNECTED" = Proto.parse1 CONNECTED
parseCommand "DISCONNECTED" = Proto.parse1 DISCONNECTED
parseCommand "SYNCING" = Proto.parse1 SYNCING
parseCommand "DONESYNCING" = Proto.parse2 DONESYNCING
parseCommand "WARNING" = Proto.parse2 WARNING
parseCommand _ = Proto.parseFail
instance Proto.Receivable Consumed where
parseCommand "PAUSE" = Proto.parse0 PAUSE
parseCommand "LOSTNET" = Proto.parse0 LOSTNET
parseCommand "RESUME" = Proto.parse0 RESUME
parseCommand "CHANGED" = Proto.parse1 CHANGED
parseCommand "RELOAD" = Proto.parse0 RELOAD
parseCommand "STOP" = Proto.parse0 STOP
parseCommand _ = Proto.parseFail
instance Proto.Serializable RemoteURI where
serialize (RemoteURI u) = show u
deserialize = RemoteURI <$$> parseURI
instance Proto.Serializable [Char] where
serialize = id
deserialize = Just
instance Proto.Serializable RefList where
serialize = unwords . map Git.fromRef
deserialize = Just . map Git.Ref . words
instance Proto.Serializable Bool where
serialize False = "0"
serialize True = "1"
deserialize "0" = Just False
deserialize "1" = Just True
deserialize _ = Nothing
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