import Monad
import System
import System.IO
-import System.Console.GetOpt
import qualified System
import Text.Printf (printf)
import qualified Ganeti.HTools.Cluster as Cluster
import qualified Ganeti.HTools.Node as Node
-import qualified Ganeti.HTools.Instance as Instance
-import qualified Ganeti.HTools.CLI as CLI
+
+import Ganeti.HTools.CLI
import Ganeti.HTools.IAlloc
import Ganeti.HTools.Types
import Ganeti.HTools.Loader (RqType(..), Request(..))
--- | Command line options structure.
-data Options = Options
- { optShowVer :: Bool -- ^ Just show the program version
- , optShowHelp :: Bool -- ^ Just show the help
- } deriving Show
-
--- | Default values for the command line options.
-defaultOptions :: Options
-defaultOptions = Options
- { optShowVer = False
- , optShowHelp = False
- }
-
-instance CLI.CLIOptions Options where
- showVersion = optShowVer
- showHelp = optShowHelp
-
-- | Options list and functions
-options :: [OptDescr (Options -> Options)]
-options =
- [ Option ['V'] ["version"]
- (NoArg (\ opts -> opts { optShowVer = True}))
- "show the version of the program"
- , Option ['h'] ["help"]
- (NoArg (\ opts -> opts { optShowHelp = True}))
- "show help"
- ]
-
-
-filterFails :: (Monad m) => [(OpResult Node.List,
- Instance.Instance, [Node.Node])]
- -> m [(Node.List, [Node.Node])]
-filterFails sols =
- if null sols then fail "No nodes onto which to allocate at all"
- else let sols' = concatMap (\ (onl, _, nn) ->
- case onl of
- OpFail _ -> []
- OpGood gnl -> [(gnl, nn)]
- ) sols
- in
- if null sols'
- then fail "No valid allocation solutions"
- else return sols'
-
-processResults :: (Monad m) => [(Node.List, [Node.Node])]
- -> m (String, [Node.Node])
-processResults sols =
- let sols' = map (\(nl', ns) -> (Cluster.compCV nl', ns)) sols
- sols'' = sortBy (compare `on` fst) sols'
- (best, w) = head sols''
- (worst, l) = last sols''
- info = printf "Valid results: %d, best score: %.8f for node(s) %s, \
- \worst score: %.8f for node(s) %s" (length sols'')
- best (intercalate "/" . map Node.name $ w)
- worst (intercalate "/" . map Node.name $ l)::String
- in return (info, w)
+options :: [OptType]
+options = [oShowVer, oShowHelp]
+
+processResults :: (Monad m) => Cluster.AllocSolution -> m (String, [Node.Node])
+processResults (fstats, succ, sols) =
+ case sols of
+ Nothing -> fail "No valid allocation solutions"
+ Just (best, (_, _, w)) ->
+ let tfails = length fstats
+ info = printf "successes %d, failures %d,\
+ \ best score: %.8f for node(s) %s"
+ succ tfails
+ best (intercalate "/" . map Node.name $ w)::String
+ in return (info, w)
-- | Process a request and return new node lists
processRequest :: Request
- -> Result [(OpResult Node.List, Instance.Instance, [Node.Node])]
+ -> Result Cluster.AllocSolution
processRequest request =
let Request rqtype nl il _ = request
in case rqtype of
main :: IO ()
main = do
cmd_args <- System.getArgs
- (_, args) <- CLI.parseOpts cmd_args "hail" options defaultOptions
+ (_, args) <- parseOpts cmd_args "hail" options
when (null args) $ do
hPutStrLn stderr "Error: this program needs an input file."
request <- case (parseData input_data) of
Bad err -> do
- putStrLn $ "Error: " ++ err
+ hPutStrLn stderr $ "Error: " ++ err
exitWith $ ExitFailure 1
Ok rq -> return rq
let Request _ _ _ csf = request
- sols = processRequest request >>= filterFails >>= processResults
- let (ok, info, rn) = case sols of
- Ok (info, sn) -> (True, "Request successful: " ++ info,
- map ((++ csf) . Node.name) sn)
- Bad s -> (False, "Request failed: " ++ s, [])
+ sols = processRequest request >>= processResults
+ let (ok, info, rn) =
+ case sols of
+ Ok (info, sn) -> (True, "Request successful: " ++ info,
+ map ((++ csf) . Node.name) sn)
+ Bad s -> (False, "Request failed: " ++ s, [])
resp = formatResponse ok info rn
putStrLn resp