From 82da31b3e0e9acdfbca4c48eb12ab1f28515ba10 Mon Sep 17 00:00:00 2001 From: Joey Hess Date: Wed, 9 Jul 2014 22:11:31 -0400 Subject: propellor (0.8.1) unstable; urgency=medium * Run apt-get update in initial bootstrap. * --list-fields now includes a table of fields that are not currently set, but would be used if they got set. * Remove .gitignore from cabal file list, to avoid build failure on Debian. Closes: #754334 # imported from the archive --- src/Propellor/Exception.hs | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) create mode 100644 src/Propellor/Exception.hs (limited to 'src/Propellor/Exception.hs') diff --git a/src/Propellor/Exception.hs b/src/Propellor/Exception.hs new file mode 100644 index 00000000..f6fd15f1 --- /dev/null +++ b/src/Propellor/Exception.hs @@ -0,0 +1,18 @@ +{-# LANGUAGE PackageImports #-} + +module Propellor.Exception where + +import qualified "MonadCatchIO-transformers" Control.Monad.CatchIO as M +import Control.Exception + +import Propellor.Types +import Propellor.Message + +-- | Catches IO exceptions and returns FailedChange. +catchPropellor :: Propellor Result -> Propellor Result +catchPropellor a = either err return =<< tryPropellor a + where + err e = warningMessage (show e) >> return FailedChange + +tryPropellor :: Propellor a -> Propellor (Either IOException a) +tryPropellor = M.try -- cgit v1.3-2-g0d8e