Revision cabce2f4 htools/Ganeti/HTools/IAlloc.hs
| b/htools/Ganeti/HTools/IAlloc.hs | ||
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module Ganeti.HTools.IAlloc |
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( parseData |
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, formatResponse |
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, readRequest |
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, processRequest |
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, processResults |
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) where |
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import Data.Either () |
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import Data.Maybe (fromMaybe) |
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import Data.Maybe (fromMaybe, isJust, fromJust) |
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import Data.List |
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import Control.Monad |
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import Text.JSON (JSObject, JSValue(JSBool, JSString, JSArray), |
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makeObj, encodeStrict, decodeStrict, |
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fromJSObject, toJSString) |
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import System (exitWith, ExitCode(..)) |
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import System.IO |
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import qualified Ganeti.HTools.Cluster as Cluster |
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import qualified Ganeti.HTools.Container as Container |
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import qualified Ganeti.HTools.Group as Group |
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import qualified Ganeti.HTools.Node as Node |
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import qualified Ganeti.HTools.Instance as Instance |
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import qualified Ganeti.Constants as C |
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import Ganeti.HTools.CLI |
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import Ganeti.HTools.Loader |
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import Ganeti.HTools.ExtLoader (loadExternalData) |
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import Ganeti.HTools.Utils |
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import Ganeti.HTools.Types |
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e_info = ("info", JSString . toJSString $ info)
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e_result = ("result", formatRVal rq elems)
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in encodeStrict $ makeObj [e_success, e_info, e_result] |
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processResults :: (Monad m) => |
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RqType -> Cluster.AllocSolution |
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-> m Cluster.AllocSolution |
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processResults _ (Cluster.AllocSolution { Cluster.asSolutions = [],
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Cluster.asLog = msgs }) = |
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fail $ intercalate ", " msgs |
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processResults (Evacuate _) as = return as |
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processResults _ as = |
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case Cluster.asSolutions as of |
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_:[] -> return as |
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_ -> fail "Internal error: multiple allocation solutions" |
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-- | Process a request and return new node lists |
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processRequest :: Request |
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-> Result Cluster.AllocSolution |
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processRequest request = |
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let Request rqtype (ClusterData gl nl il _) = request |
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in case rqtype of |
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Allocate xi reqn -> Cluster.tryMGAlloc gl nl il xi reqn |
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Relocate idx reqn exnodes -> Cluster.tryMGReloc gl nl il |
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idx reqn exnodes |
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Evacuate exnodes -> Cluster.tryMGEvac gl nl il exnodes |
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MultiReloc _ _ -> fail "multi-reloc not handled" |
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NodeEvacuate _ _ -> fail "node-evacuate not handled" |
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-- | Reads the request from the data file(s) |
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readRequest :: Options -> [String] -> IO Request |
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readRequest opts args = do |
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when (null args) $ do |
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hPutStrLn stderr "Error: this program needs an input file." |
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exitWith $ ExitFailure 1 |
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input_data <- readFile (head args) |
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r1 <- case parseData input_data of |
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Bad err -> do |
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hPutStrLn stderr $ "Error: " ++ err |
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exitWith $ ExitFailure 1 |
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Ok rq -> return rq |
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(if isJust (optDataFile opts) || (not . null . optNodeSim) opts |
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then do |
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cdata <- loadExternalData opts |
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let Request rqt _ = r1 |
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return $ Request rqt cdata |
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else return r1) |
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