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{-# LANGUAGE PackageImports #-}
module Propellor.Message where
import System.Console.ANSI
import System.IO
import System.Log.Logger
import System.Log.Formatter
import System.Log.Handler (setFormatter, LogHandler)
import System.Log.Handler.Simple
import "mtl" Control.Monad.Reader
import Data.Maybe
import Control.Applicative
import System.Directory
import Control.Monad.IfElse
import Propellor.Types
import Utility.Monad
import Utility.Env
import Utility.Process
data MessageHandle
= ConsoleMessageHandle
| TextMessageHandle
mkMessageHandle :: IO MessageHandle
mkMessageHandle = do
ifM (hIsTerminalDevice stdout <||> (isJust <$> getEnv "PROPELLOR_CONSOLE"))
( return ConsoleMessageHandle
, return TextMessageHandle
)
forceConsole :: IO ()
forceConsole = void $ setEnv "PROPELLOR_CONSOLE" "1" True
isConsole :: MessageHandle -> Bool
isConsole ConsoleMessageHandle = True
isConsole _ = False
whenConsole :: MessageHandle -> IO () -> IO ()
whenConsole ConsoleMessageHandle a = a
whenConsole _ _ = return ()
-- | Shows a message while performing an action, with a colored status
-- display.
actionMessage :: (MonadIO m, ActionResult r) => Desc -> m r -> m r
actionMessage = actionMessage' Nothing
-- | Shows a message while performing an action on a specified host,
-- with a colored status display.
actionMessageOn :: (MonadIO m, ActionResult r) => HostName -> Desc -> m r -> m r
actionMessageOn = actionMessage' . Just
actionMessage' :: (MonadIO m, ActionResult r) => Maybe HostName -> Desc -> m r -> m r
actionMessage' mhn desc a = do
h <- liftIO mkMessageHandle
liftIO $ whenConsole h $ do
setTitle $ "propellor: " ++ desc
hFlush stdout
r <- a
liftIO $ do
whenConsole h $
setTitle "propellor: running"
showhn h mhn
putStr $ desc ++ " ... "
let (msg, intensity, color) = getActionResult r
colorLine h intensity color msg
hFlush stdout
return r
where
showhn _ Nothing = return ()
showhn h (Just hn) = do
whenConsole h $
setSGR [SetColor Foreground Dull Cyan]
putStr (hn ++ " ")
whenConsole h $
setSGR []
warningMessage :: MonadIO m => String -> m ()
warningMessage s = liftIO $ do
h <- mkMessageHandle
colorLine h Vivid Magenta $ "** warning: " ++ s
errorMessage :: MonadIO m => String -> m a
errorMessage s = liftIO $ do
h <- mkMessageHandle
colorLine h Vivid Red $ "** error: " ++ s
error "Cannot continue!"
colorLine :: MessageHandle -> ColorIntensity -> Color -> String -> IO ()
colorLine h intensity color msg = do
whenConsole h $
setSGR [SetColor Foreground intensity color]
putStr msg
whenConsole h $
setSGR []
-- Note this comes after the color is reset, so that
-- the color set and reset happen in the same line.
putStrLn ""
hFlush stdout
debug :: [String] -> IO ()
debug = debugM "propellor" . unwords
checkDebugMode :: IO ()
checkDebugMode = go =<< getEnv "PROPELLOR_DEBUG"
where
go (Just "1") = enableDebugMode
go (Just _) = noop
go Nothing = whenM (doesDirectoryExist ".git") $
whenM (any (== "1") . lines <$> getgitconfig) $
enableDebugMode
getgitconfig = readProcess "git" ["config", "propellor.debug"]
enableDebugMode :: IO ()
enableDebugMode = do
f <- setFormatter
<$> streamHandler stderr DEBUG
<*> pure (simpleLogFormatter "[$time] $msg")
updateGlobalLogger rootLoggerName $
setLevel DEBUG . setHandlers [f]
|
