Following the split Types/BasicTypes, we can remove the last
JSON-related stuff from Utils.hs, and do some more cleanup.
---
htools/Ganeti/BasicTypes.hs |6 ++
htools/Ganeti/HTools/JSON.hs | 12
htools/Ganeti/HTools/Luxi.hs |2 +-
htools/Ganeti/HTools/QC.hs|2 +-
htools/Ganeti/HTools/Types.hs |6 ++
htools/Ganeti/HTools/Utils.hs | 22 --
6 files changed, 26 insertions(+), 24 deletions(-)
diff --git a/htools/Ganeti/BasicTypes.hs b/htools/Ganeti/BasicTypes.hs
index 031e3c2..b7b437f 100644
--- a/htools/Ganeti/BasicTypes.hs
+++ b/htools/Ganeti/BasicTypes.hs
@@ -24,6 +24,7 @@ module Ganeti.BasicTypes
, isOk
, isBad
, eitherToResult
+ , annotateResult
) where
import Control.Monad
@@ -65,3 +66,8 @@ isBad = not . isOk
eitherToResult :: Either String a -> Result a
eitherToResult (Left s) = Bad s
eitherToResult (Right v) = Ok v
+
+-- | Annotate a Result with an ownership information.
+annotateResult :: String -> Result a -> Result a
+annotateResult owner (Bad s) = Bad $ owner ++ ": " ++ s
+annotateResult _ v = v
diff --git a/htools/Ganeti/HTools/JSON.hs b/htools/Ganeti/HTools/JSON.hs
index 185201f..31a6d19 100644
--- a/htools/Ganeti/HTools/JSON.hs
+++ b/htools/Ganeti/HTools/JSON.hs
@@ -33,6 +33,7 @@ module Ganeti.HTools.JSON
, fromJVal
, asJSObject
, asObjectList
+ , tryFromObj
)
where
@@ -42,6 +43,8 @@ import Text.Printf (printf)
import qualified Text.JSON as J
+import Ganeti.BasicTypes
+
-- * JSON-related functions
-- | A type alias for the list-based representation of J.JSObject.
@@ -114,3 +117,12 @@ asJSObject _ = fail "not an object"
-- | Coneverts a list of JSON values into a list of JSON objects.
asObjectList :: (Monad m) => [J.JSValue] -> m [J.JSObject J.JSValue]
asObjectList = mapM asJSObject
+
+-- | Try to extract a key from a object with better error reporting
+-- than fromObj.
+tryFromObj :: (J.JSON a) =>
+ String -- ^ Textual "owner" in error messages
+ -> JSRecord -- ^ The object array
+ -> String -- ^ The desired key from the object
+ -> Result a
+tryFromObj t o = annotateResult t . fromObj o
diff --git a/htools/Ganeti/HTools/Luxi.hs b/htools/Ganeti/HTools/Luxi.hs
index f7c6dee..38bb266 100644
--- a/htools/Ganeti/HTools/Luxi.hs
+++ b/htools/Ganeti/HTools/Luxi.hs
@@ -38,7 +38,7 @@ import Ganeti.HTools.Types
import qualified Ganeti.HTools.Group as Group
import qualified Ganeti.HTools.Node as Node
import qualified Ganeti.HTools.Instance as Instance
-import Ganeti.HTools.Utils (fromJVal, annotateResult, tryFromObj, asJSObject,
+import Ganeti.HTools.Utils (fromJVal, tryFromObj, asJSObject,
fromObj)
{-# ANN module "HLint: ignore Eta reduce" #-}
diff --git a/htools/Ganeti/HTools/QC.hs b/htools/Ganeti/HTools/QC.hs
index df1da6b..435d378 100644
--- a/htools/Ganeti/HTools/QC.hs
+++ b/htools/Ganeti/HTools/QC.hs
@@ -91,7 +91,7 @@ maxCpu = 1024
defGroup :: Group.Group
defGroup = flip Group.setIdx 0 $
- Group.create "default" Utils.defaultGroupID Types.AllocPreferred
+ Group.create "default" Types.defaultGroupID Types.AllocPreferred
defGroupList :: Group.List
defGroupList = Container.fromList [(Group.idx defGroup, defGroup)]
diff --git a/htools/Ganeti/HTools/Types.hs b/htools/Ganeti/HTools/Types.hs
index 644d4d9..3209ce7 100644
--- a/htools/Ganeti/HTools/Types.hs
+++ b/htools/Ganeti/HTools/Types.hs
@@ -33,6 +33,7 @@ module Ganeti.HTools.Types
, Score
, Weight
, GroupID
+ , defaultGroupID
, AllocPolicy(..)
, allocPolicyFromRaw
, allocPolicyToRaw
@@ -62,6 +63,7 @@ module Ganeti.HTools.Types
, isOk
, isBad
, eitherToResult
+ , annotateResult
, Element(..)
, FailMode(..)
, FailStats
@@ -100,6 +102,10 @@ type Weight = Double
-- | The Group UUID type.
type GroupID = String
+-- | Default group UUID (just a string, not a real UUID).
+defaultGroupID :: GroupID
+defaultGroupID = "----"
+
-- | The Group allocation policy type.
--
-- Note that the order of constructors is important as the automatic
diff --git a/htools/Ganeti/HTools/Utils.hs b/htools/Ganeti/HTools/Utils.hs
index c3b3caa..b1898eb 100644
--- a/htools/Ganeti/HTools/Utils.hs
+++ b/htools/Ganeti/HTools/Utils.hs
@@ -44,18 +44,14 @@ module Ganeti.HTools.Utils
, fromJResult
, tryRead
, formatTable
- , annotateResult
- , defaultGroupID
, parseUnit
) where
import Data.Char (toUpper)
import Data.List
-import qualified Text.JSON as J
import Debug.Trace
-import Ganeti.HTools.Types
-- we will re-export these for our existing users
import Ganeti.HTools.JSON
@@ -134,20 +130,6 @@ select :: a-- ^ default result
-> a-- ^ first result which has a True condition, or default
select def = maybe def snd . find fst
--- | Annotate a Result with an ownership information.
-annotateResult :: String -> Result a -> R
