{-
-Copyright (C) 2009 Google Inc.
+Copyright (C) 2009, 2010 Google Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
module Main (main) where
import Data.List
-import Data.Function
import Data.Maybe (isJust, fromJust)
import Monad
-import System
+import System (exitWith, ExitCode(..))
import System.IO
-import System.Console.GetOpt
import qualified System
-import Text.Printf (printf)
-
-import qualified Ganeti.HTools.Container as Container
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(..))
-import Ganeti.HTools.Utils
-
--- | 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
+import Ganeti.HTools.Loader (RqType(..), Request(..), ClusterData(..))
+import Ganeti.HTools.ExtLoader (loadExternalData)
-- | Options list and functions
-options :: [OptDescr (Options -> Options)]
+options :: [OptType]
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"
+ [ oPrintNodes
+ , oDataFile
+ , oNodeSim
+ , oShowVer
+ , oShowHelp
]
+processResults :: (Monad m) =>
+ RqType -> Cluster.AllocSolution
+ -> m Cluster.AllocSolution
+processResults _ (Cluster.AllocSolution { Cluster.asSolutions = [],
+ Cluster.asLog = msgs }) =
+ fail $ intercalate ", " msgs
-filterFails :: (Monad m) => [(Maybe 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' = filter (isJust . fst3) sols
- in if null sols' then
- fail "No valid allocation solutions"
- else
- return $ map (\(x, _, y) -> (fromJust x, y)) 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)
+processResults (Evacuate _) as = return as
+
+processResults _ as =
+ case Cluster.asSolutions as of
+ _:[] -> return as
+ _ -> fail "Internal error: multiple allocation solutions"
-- | Process a request and return new node lists
-processRequest ::
- Request
- -> Result [(Maybe Node.List, Instance.Instance, [Node.Node])]
+processRequest :: Request
+ -> Result Cluster.AllocSolution
processRequest request =
- let Request rqtype nl il _ = request
+ let Request rqtype (ClusterData gl nl il _) = request
in case rqtype of
- Allocate xi reqn -> Cluster.tryAlloc nl il xi reqn
+ Allocate xi reqn -> Cluster.tryMGAlloc gl nl il xi reqn
Relocate idx reqn exnodes -> Cluster.tryReloc nl il idx reqn exnodes
+ Evacuate exnodes -> Cluster.tryEvac nl il exnodes
+
+-- | Reads the request from the data file(s)
+readRequest :: Options -> [String] -> IO Request
+readRequest opts args = do
+ when (null args) $ do
+ hPutStrLn stderr "Error: this program needs an input file."
+ exitWith $ ExitFailure 1
+
+ input_data <- readFile (head args)
+ r1 <- case (parseData input_data) of
+ Bad err -> do
+ hPutStrLn stderr $ "Error: " ++ err
+ exitWith $ ExitFailure 1
+ Ok rq -> return rq
+ r2 <- if isJust (optDataFile opts) || (not . null . optNodeSim) opts
+ then do
+ cdata <- loadExternalData opts
+ let Request rqt _ = r1
+ return $ Request rqt cdata
+ else return r1
+ return r2
-- | Main function.
main :: IO ()
main = do
cmd_args <- System.getArgs
- (_, args) <- CLI.parseOpts cmd_args "hail" options defaultOptions
+ (opts, args) <- parseOpts cmd_args "hail" options
- when (null args) $ do
- hPutStrLn stderr "Error: this program needs an input file."
- exitWith $ ExitFailure 1
+ let shownodes = optShowNodes opts
+
+ request <- readRequest opts args
+
+ let Request rq cdata = request
+
+ when (isJust shownodes) $ do
+ hPutStrLn stderr "Initial cluster status:"
+ hPutStrLn stderr $ Cluster.printNodes (cdNodes cdata)
+ (fromJust shownodes)
- let input_file = head args
- input_data <- readFile input_file
-
- request <- case (parseData input_data) of
- Bad err -> do
- putStrLn $ "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, [])
- resp = formatResponse ok info rn
+ let sols = processRequest request >>= processResults rq
+ let (ok, info, rn) =
+ case sols of
+ Ok as -> (True, "Request successful: " ++
+ intercalate ", " (Cluster.asLog as),
+ Cluster.asSolutions as)
+ Bad s -> (False, "Request failed: " ++ s, [])
+ resp = formatResponse ok info rq rn
putStrLn resp
projects / ganeti-local / blobdiff