62 lines
1.8 KiB
Haskell
62 lines
1.8 KiB
Haskell
{- git-annex repository differences
|
|
-
|
|
- Copyright 2015 Joey Hess <id@joeyh.name>
|
|
-
|
|
- Licensed under the GNU AGPL version 3 or higher.
|
|
-}
|
|
|
|
{-# LANGUAGE OverloadedStrings #-}
|
|
|
|
module Annex.Difference (
|
|
module Types.Difference,
|
|
setDifferences,
|
|
) where
|
|
|
|
import Annex.Common
|
|
import Types.Difference
|
|
import Logs.Difference
|
|
import Config
|
|
import Annex.UUID
|
|
import Logs.UUID
|
|
import Annex.Version
|
|
import qualified Annex
|
|
|
|
import qualified Data.Map as M
|
|
|
|
-- Differences are only allowed to be tweaked when initializing a
|
|
-- repository for the first time, and then only if there is not another
|
|
-- known uuid. If the repository was cloned from elsewhere, it inherits
|
|
-- the existing settings.
|
|
--
|
|
-- Must be called before setVersion, so it can check if this is the first
|
|
-- time the repository is being initialized.
|
|
setDifferences :: Annex ()
|
|
setDifferences = do
|
|
u <- getUUID
|
|
otherds <- allDifferences <$> recordedDifferences
|
|
ds <- mappend otherds . annexDifferences <$> Annex.getGitConfig
|
|
when (ds /= mempty) $ do
|
|
ds' <- ifM (isJust <$> getVersion)
|
|
( do
|
|
oldds <- recordedDifferencesFor u
|
|
when (ds /= oldds) $
|
|
warning "Cannot change tunable parameters in already initialized repository."
|
|
return oldds
|
|
, if otherds == mempty
|
|
then ifM (any (/= u) . M.keys <$> uuidDescMap)
|
|
( do
|
|
warning "Cannot change tunable parameters in a clone of an existing repository."
|
|
return mempty
|
|
, return ds
|
|
)
|
|
else if otherds /= ds
|
|
then do
|
|
warning "The specified tunable parameters differ from values being used in other clones of this repository."
|
|
return otherds
|
|
else return ds
|
|
)
|
|
forM_ (listDifferences ds') $ \d ->
|
|
case differenceConfigKey d of
|
|
Nothing -> noop
|
|
Just ck -> setConfig ck (differenceConfigVal d)
|
|
recordDifferences ds' u
|