git-annex-3.20120418: Remote/List.hs

{-# LANGUAGE CPP #-}

{- git-annex remote list
 -
 - Copyright 2011 Joey Hess <joey@kitenet.net>
 -
 - Licensed under the GNU GPL version 3 or higher.
 -}

module Remote.List where

import qualified Data.Map as M

import Common.Annex
import qualified Annex
import Logs.Remote
import Types.Remote
import Annex.UUID
import Config
import Remote.Helper.Hooks

import qualified Remote.Git
#ifdef WITH_S3
import qualified Remote.S3
#endif
import qualified Remote.Bup
import qualified Remote.Directory
import qualified Remote.Rsync
import qualified Remote.Web
import qualified Remote.Hook

remoteTypes :: [RemoteType]
remoteTypes =
	[ Remote.Git.remote
#ifdef WITH_S3
	, Remote.S3.remote
#endif
	, Remote.Bup.remote
	, Remote.Directory.remote
	, Remote.Rsync.remote
	, Remote.Web.remote
	, Remote.Hook.remote
	]

{- Builds a list of all available Remotes.
 - Since doing so can be expensive, the list is cached. -}
remoteList :: Annex [Remote]
remoteList = do
	rs <- Annex.getState Annex.remotes
	if null rs
		then do
			m <- readRemoteLog
			rs' <- concat <$> mapM (process m) remoteTypes
			Annex.changeState $ \s -> s { Annex.remotes = rs' }
			return rs'
		else return rs
	where
		process m t = enumerate t >>= mapM (gen m t)
		gen m t r = do
			u <- getRepoUUID r
			addHooks =<< generate t r u (M.lookup u m)

{- All remotes that are not ignored. -}
enabledRemoteList :: Annex [Remote]
enabledRemoteList = filterM (repoNotIgnored . repo) =<< remoteList