module B9.B9Config ( B9Config(..)
, verbosity
, logFile
, buildDirRoot
, keepTempDirs
, execEnvType
, profileFile
, envVars
, uniqueBuildDirs
, repositoryCache
, repository
, interactive
, libVirtLXCConfigs
, remoteRepos
, maxLocalSharedImageRevisions
, B9ConfigOverride(..)
, noB9ConfigOverride
, B9ConfigAction()
, execB9ConfigAction
, invokeB9
, askRuntimeConfig
, localRuntimeConfig
, modifyPermanentConfig
, customB9Config
, customB9ConfigPath
, overrideB9ConfigPath
, overrideB9Config
, overrideWorkingDirectory
, overrideVerbosity
, overrideKeepBuildDirs
, defaultB9ConfigFile
, defaultRepositoryCache
, defaultB9Config
, openOrCreateB9Config
, writeB9CPDocument
, readB9Config
, parseB9Config
, appendPositionalArguments
, modifyCPDocument
, b9ConfigToCPDocument
, LogLevel(..)
, ExecEnvType (..)
, BuildVariables
, module X
) where
import Data.Maybe (fromMaybe)
import Control.Exception
import Data.Function (on)
import Control.Lens as Lens (makeLenses, (^.), (.~), over, set)
import Control.Monad ((>=>))
import Control.Monad.IO.Class
import Control.Monad.Reader
import Control.Monad.Writer
import System.Directory
import System.IO.B9Extras (SystemPath(..), resolve, ensureDir)
import qualified Data.Semigroup as Sem
import Data.List (partition, sortBy)
import Data.ConfigFile.B9Extras
( CPDocument, CPError, CPGet
, CPOptionSpec, readCPDocument
, CPReadException(..), mergeCP, toStringCP
, addSectionCP, emptyCP, setShowCP, readCP )
import B9.B9Config.LibVirtLXC as X
import B9.B9Config.Repository as X
import Text.Printf (printf)
type BuildVariables = [(String,String)]
data ExecEnvType = LibVirtLXC deriving (Eq, Show, Ord, Read)
data LogLevel = LogTrace | LogDebug | LogInfo | LogError | LogNothing
deriving (Eq, Show, Ord, Read)
data B9Config = B9Config { _verbosity :: Maybe LogLevel
, _logFile :: Maybe FilePath
, _buildDirRoot :: Maybe FilePath
, _keepTempDirs :: Bool
, _execEnvType :: ExecEnvType
, _profileFile :: Maybe FilePath
, _envVars :: BuildVariables
, _uniqueBuildDirs :: Bool
, _repositoryCache :: Maybe SystemPath
, _repository :: Maybe String
, _interactive :: Bool
, _maxLocalSharedImageRevisions :: Maybe Int
, _libVirtLXCConfigs :: Maybe LibVirtLXCConfig
, _remoteRepos :: [RemoteRepo]
} deriving (Show)
instance Sem.Semigroup B9Config where
c <> c' =
B9Config { _verbosity = getLast $ on mappend (Last . _verbosity) c c'
, _logFile = getLast $ on mappend (Last . _logFile) c c'
, _buildDirRoot = getLast $ on mappend (Last . _buildDirRoot) c c'
, _keepTempDirs = getAny $ on mappend (Any . _keepTempDirs) c c'
, _execEnvType = LibVirtLXC
, _profileFile = getLast $ on mappend (Last . _profileFile) c c'
, _envVars = on mappend _envVars c c'
, _uniqueBuildDirs = getAll ((mappend `on` (All . _uniqueBuildDirs)) c c')
, _repositoryCache = getLast $ on mappend (Last . _repositoryCache) c c'
, _repository = getLast ((mappend `on` (Last . _repository)) c c')
, _interactive = getAny ((mappend `on` (Any . _interactive)) c c')
, _maxLocalSharedImageRevisions = getLast ((mappend `on` (Last . _maxLocalSharedImageRevisions)) c c')
, _libVirtLXCConfigs = getLast ((mappend `on` (Last . _libVirtLXCConfigs)) c c')
, _remoteRepos = (mappend `on` _remoteRepos) c c'
}
instance Monoid B9Config where
mappend = (Sem.<>)
mempty = B9Config Nothing Nothing Nothing False LibVirtLXC Nothing [] True
Nothing Nothing False Nothing Nothing []
data B9ConfigOverride = B9ConfigOverride
{ _customB9ConfigPath :: Maybe SystemPath
, _customB9Config :: B9Config
} deriving Show
noB9ConfigOverride :: B9ConfigOverride
noB9ConfigOverride = B9ConfigOverride Nothing mempty
makeLenses ''B9Config
makeLenses ''B9ConfigOverride
overrideB9ConfigPath :: SystemPath -> B9ConfigOverride -> B9ConfigOverride
overrideB9ConfigPath p = customB9ConfigPath .~ Just p
overrideB9Config
:: (B9Config -> B9Config) -> B9ConfigOverride -> B9ConfigOverride
overrideB9Config = over customB9Config
overrideWorkingDirectory :: FilePath -> B9ConfigOverride -> B9ConfigOverride
overrideWorkingDirectory p = customB9Config . buildDirRoot .~ Just p
overrideVerbosity :: LogLevel -> B9ConfigOverride -> B9ConfigOverride
overrideVerbosity = overrideB9Config . Lens.set verbosity . Just
overrideKeepBuildDirs :: Bool -> B9ConfigOverride -> B9ConfigOverride
overrideKeepBuildDirs = overrideB9Config . Lens.set keepTempDirs
newtype B9ConfigAction m a = B9ConfigAction
{ runB9ConfigAction :: ReaderT B9Config (WriterT [Endo B9Config] m) a}
deriving ( Functor, Applicative, Monad, MonadIO )
askRuntimeConfig :: Monad m => B9ConfigAction m B9Config
askRuntimeConfig = B9ConfigAction ask
localRuntimeConfig
:: Monad m
=> (B9Config -> B9Config)
-> B9ConfigAction m a
-> B9ConfigAction m a
localRuntimeConfig f = B9ConfigAction . local f . runB9ConfigAction
modifyPermanentConfig :: Monad m => Endo B9Config -> B9ConfigAction m ()
modifyPermanentConfig f = B9ConfigAction (tell [f])
execB9ConfigAction :: MonadIO m => B9ConfigAction m a -> B9ConfigOverride -> m a
execB9ConfigAction act cfg = do
let cfgPath = cfg ^. customB9ConfigPath
cp <- openOrCreateB9Config cfgPath
case parseB9Config cp of
Left e -> do
fail
( printf "Internal configuration load error, please report this: %s\n"
(show e)
)
Right permanentConfig -> do
let runtimeCfg = permanentConfig Sem.<> (cfg ^. customB9Config)
(res, permanentB9ConfigUpdates) <- runWriterT
(runReaderT (runB9ConfigAction act) runtimeCfg)
let cpExtErr = modifyCPDocument cp <$> permanentB9ConfigUpdate
permanentB9ConfigUpdate = if null permanentB9ConfigUpdates
then Nothing
else Just (mconcat permanentB9ConfigUpdates)
cpExt <- maybe
(return Nothing)
( either
( fail
. printf
"Internal configuration update error! Please report this: %s\n"
. show
)
(return . Just)
)
cpExtErr
mapM_ (writeB9CPDocument (cfg ^. customB9ConfigPath)) cpExt
return res
invokeB9 :: MonadIO m => B9ConfigAction m a -> m a
invokeB9 = flip execB9ConfigAction noB9ConfigOverride
openOrCreateB9Config :: MonadIO m => Maybe SystemPath -> m CPDocument
openOrCreateB9Config cfgPath = do
cfgFile <- resolve (fromMaybe defaultB9ConfigFile cfgPath)
ensureDir cfgFile
liftIO $ do
exists <- doesFileExist cfgFile
if exists
then readCPDocument (Path cfgFile)
else
let res = b9ConfigToCPDocument defaultB9Config
in case res of
Left e -> throwIO (CPReadException cfgFile e)
Right cp -> writeFile cfgFile (toStringCP cp) >> return cp
writeB9CPDocument :: MonadIO m => Maybe SystemPath -> CPDocument -> m ()
writeB9CPDocument cfgFileIn cp = do
cfgFile <- resolve (fromMaybe defaultB9ConfigFile cfgFileIn)
ensureDir cfgFile
liftIO (writeFile cfgFile (toStringCP cp))
defaultB9Config :: B9Config
defaultB9Config = B9Config
{ _verbosity = Just LogInfo
, _logFile = Nothing
, _buildDirRoot = Nothing
, _keepTempDirs = False
, _execEnvType = LibVirtLXC
, _profileFile = Nothing
, _envVars = []
, _uniqueBuildDirs = True
, _repository = Nothing
, _repositoryCache = Just defaultRepositoryCache
, _interactive = False
, _maxLocalSharedImageRevisions = Just 2
, _libVirtLXCConfigs = Just defaultLibVirtLXCConfig
, _remoteRepos = []
}
defaultRepositoryCache :: SystemPath
defaultRepositoryCache = InB9UserDir "repo-cache"
defaultB9ConfigFile :: SystemPath
defaultB9ConfigFile = InB9UserDir "b9.conf"
verbosityK :: String
verbosityK = "verbosity"
logFileK :: String
logFileK = "log_file"
buildDirRootK :: String
buildDirRootK = "build_dir_root"
keepTempDirsK :: String
keepTempDirsK = "keep_temp_dirs"
execEnvTypeK :: String
execEnvTypeK = "exec_env"
profileFileK :: String
profileFileK = "profile_file"
envVarsK :: String
envVarsK = "environment_vars"
uniqueBuildDirsK :: String
uniqueBuildDirsK = "unique_build_dirs"
repositoryCacheK :: String
repositoryCacheK = "repository_cache"
maxLocalSharedImageRevisionsK :: String
maxLocalSharedImageRevisionsK = "max_cached_shared_images"
repositoryK :: String
repositoryK = "repository"
cfgFileSection :: String
cfgFileSection = "global"
modifyCPDocument :: CPDocument -> Endo B9Config -> Either CPError CPDocument
modifyCPDocument cp f = do
cfg <- parseB9Config cp
cp2 <- b9ConfigToCPDocument (appEndo f cfg)
return (mergeCP cp cp2)
b9ConfigToCPDocument :: B9Config -> Either CPError CPDocument
b9ConfigToCPDocument c = do
cp1 <- addSectionCP emptyCP cfgFileSection
cp2 <- setShowCP cp1 cfgFileSection verbosityK (_verbosity c)
cp3 <- setShowCP cp2 cfgFileSection logFileK (_logFile c)
cp4 <- setShowCP cp3 cfgFileSection buildDirRootK (_buildDirRoot c)
cp5 <- setShowCP cp4 cfgFileSection keepTempDirsK (_keepTempDirs c)
cp6 <- setShowCP cp5 cfgFileSection execEnvTypeK (_execEnvType c)
cp7 <- setShowCP cp6 cfgFileSection profileFileK (_profileFile c)
cp8 <- setShowCP cp7 cfgFileSection envVarsK (_envVars c)
cp9 <- setShowCP cp8 cfgFileSection uniqueBuildDirsK (_uniqueBuildDirs c)
cpA <- setShowCP cp9
cfgFileSection
maxLocalSharedImageRevisionsK
(_maxLocalSharedImageRevisions c)
cpB <- setShowCP cpA cfgFileSection repositoryCacheK (_repositoryCache c)
cpC <-
( foldr (>=>)
return
(libVirtLXCConfigToCPDocument <$> (_libVirtLXCConfigs c))
)
cpB
cpFinal <- (foldr (>=>) return (remoteRepoToCPDocument <$> _remoteRepos c))
cpC
setShowCP cpFinal cfgFileSection repositoryK (_repository c)
readB9Config :: MonadIO m => Maybe SystemPath -> m CPDocument
readB9Config cfgFile = readCPDocument (fromMaybe defaultB9ConfigFile cfgFile)
parseB9Config :: CPDocument -> Either CPError B9Config
parseB9Config cp =
let
getr :: (CPGet a) => CPOptionSpec -> Either CPError a
getr = readCP cp cfgFileSection
getB9Config =
B9Config
<$> getr verbosityK
<*> getr logFileK
<*> getr buildDirRootK
<*> getr keepTempDirsK
<*> getr execEnvTypeK
<*> getr profileFileK
<*> getr envVarsK
<*> getr uniqueBuildDirsK
<*> getr repositoryCacheK
<*> getr repositoryK
<*> pure False
<*> pure
(either (const Nothing) id (getr maxLocalSharedImageRevisionsK))
<*> pure (either (const Nothing) Just (parseLibVirtLXCConfig cp))
<*> parseRemoteRepos cp
in
getB9Config
appendPositionalArguments :: [String] -> B9Config -> B9Config
appendPositionalArguments extraPositional c = c
{ _envVars = appendVars (_envVars c)
}
where
appendVars argsOld =
let (oldPositional, oldOther) =
partition (("arg_" ==) . take 4 . fst) argsOld
oldPositionalSortedByPosition =
map snd
$ sortBy (compare `on` fst)
$ map (\(x, y) -> ((read :: String -> Int) $ drop 4 $ x, y))
$ oldPositional
newPositional =
let xs = oldPositionalSortedByPosition ++ extraPositional
in [ ("arg_" ++ show i, a) | (i, a) <- zip [1 :: Int ..] xs ]
in newPositional ++ oldOther