root / htools / Ganeti / Types.hs @ 5cd95d46
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{-# LANGUAGE TemplateHaskell #-} |
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|
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{-| Some common Ganeti types. |
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|
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This holds types common to both core work, and to htools. Types that |
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are very core specific (e.g. configuration objects) should go in |
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'Ganeti.Objects', while types that are specific to htools in-memory |
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representation should go into 'Ganeti.HTools.Types'. |
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|
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-} |
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|
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{- |
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|
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Copyright (C) 2012 Google Inc. |
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|
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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|
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This program is distributed in the hope that it will be useful, but |
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WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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02110-1301, USA. |
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|
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-} |
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|
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module Ganeti.Types |
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( AllocPolicy(..) |
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, allocPolicyFromRaw |
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, allocPolicyToRaw |
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, InstanceStatus(..) |
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, instanceStatusFromRaw |
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, instanceStatusToRaw |
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, DiskTemplate(..) |
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, diskTemplateToRaw |
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, diskTemplateFromRaw |
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, NonNegative |
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, fromNonNegative |
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, mkNonNegative |
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, Positive |
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, fromPositive |
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, mkPositive |
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, Negative |
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, fromNegative |
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, mkNegative |
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, NonEmpty |
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, fromNonEmpty |
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, mkNonEmpty |
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, NonEmptyString |
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, MigrationMode(..) |
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, VerifyOptionalChecks(..) |
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, DdmSimple(..) |
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, DdmFull(..) |
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, CVErrorCode(..) |
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, cVErrorCodeToRaw |
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, Hypervisor(..) |
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, OobCommand(..) |
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, StorageType(..) |
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, NodeEvacMode(..) |
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, FileDriver(..) |
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, InstCreateMode(..) |
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, RebootType(..) |
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, ExportMode(..) |
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, IAllocatorTestDir(..) |
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, IAllocatorMode(..) |
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, iAllocatorModeToRaw |
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, NetworkType(..) |
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, networkTypeToRaw |
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, NICMode(..) |
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, nICModeToRaw |
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, JobStatus(..) |
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, jobStatusToRaw |
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, jobStatusFromRaw |
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, FinalizedJobStatus(..) |
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, finalizedJobStatusToRaw |
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, JobId |
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, fromJobId |
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, makeJobId |
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, RelativeJobId |
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, JobIdDep(..) |
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, JobDependency(..) |
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, OpSubmitPriority(..) |
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, OpStatus(..) |
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, opStatusToRaw |
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, opStatusFromRaw |
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, ELogType(..) |
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) where |
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|
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import Control.Monad (liftM) |
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import qualified Text.JSON as JSON |
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import Text.JSON (JSON, readJSON, showJSON) |
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import Data.Ratio (numerator, denominator) |
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|
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import qualified Ganeti.Constants as C |
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import qualified Ganeti.THH as THH |
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import Ganeti.JSON |
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import Ganeti.Utils |
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|
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-- * Generic types |
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|
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-- | Type that holds a non-negative value. |
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newtype NonNegative a = NonNegative { fromNonNegative :: a } |
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deriving (Show, Eq) |
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|
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-- | Smart constructor for 'NonNegative'. |
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mkNonNegative :: (Monad m, Num a, Ord a, Show a) => a -> m (NonNegative a) |
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mkNonNegative i | i >= 0 = return (NonNegative i) |
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| otherwise = fail $ "Invalid value for non-negative type '" ++ |
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show i ++ "'" |
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|
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instance (JSON.JSON a, Num a, Ord a, Show a) => JSON.JSON (NonNegative a) where |
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showJSON = JSON.showJSON . fromNonNegative |
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readJSON v = JSON.readJSON v >>= mkNonNegative |
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|
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-- | Type that holds a positive value. |
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newtype Positive a = Positive { fromPositive :: a } |
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deriving (Show, Eq) |
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|
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-- | Smart constructor for 'Positive'. |
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mkPositive :: (Monad m, Num a, Ord a, Show a) => a -> m (Positive a) |
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mkPositive i | i > 0 = return (Positive i) |
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| otherwise = fail $ "Invalid value for positive type '" ++ |
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show i ++ "'" |
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|
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instance (JSON.JSON a, Num a, Ord a, Show a) => JSON.JSON (Positive a) where |
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showJSON = JSON.showJSON . fromPositive |
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readJSON v = JSON.readJSON v >>= mkPositive |
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|
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-- | Type that holds a negative value. |
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newtype Negative a = Negative { fromNegative :: a } |
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deriving (Show, Eq) |
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|
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-- | Smart constructor for 'Negative'. |
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mkNegative :: (Monad m, Num a, Ord a, Show a) => a -> m (Negative a) |
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mkNegative i | i < 0 = return (Negative i) |
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| otherwise = fail $ "Invalid value for negative type '" ++ |
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show i ++ "'" |
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|
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instance (JSON.JSON a, Num a, Ord a, Show a) => JSON.JSON (Negative a) where |
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showJSON = JSON.showJSON . fromNegative |
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readJSON v = JSON.readJSON v >>= mkNegative |
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|
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-- | Type that holds a non-null list. |
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newtype NonEmpty a = NonEmpty { fromNonEmpty :: [a] } |
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deriving (Show, Eq) |
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|
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-- | Smart constructor for 'NonEmpty'. |
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mkNonEmpty :: (Monad m) => [a] -> m (NonEmpty a) |
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mkNonEmpty [] = fail "Received empty value for non-empty list" |
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mkNonEmpty xs = return (NonEmpty xs) |
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|
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instance (JSON.JSON a) => JSON.JSON (NonEmpty a) where |
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showJSON = JSON.showJSON . fromNonEmpty |
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readJSON v = JSON.readJSON v >>= mkNonEmpty |
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|
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-- | A simple type alias for non-empty strings. |
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type NonEmptyString = NonEmpty Char |
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|
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-- * Ganeti types |
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|
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-- | Instance disk template type. |
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$(THH.declareSADT "DiskTemplate" |
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[ ("DTDiskless", 'C.dtDiskless) |
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, ("DTFile", 'C.dtFile) |
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, ("DTSharedFile", 'C.dtSharedFile) |
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, ("DTPlain", 'C.dtPlain) |
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, ("DTBlock", 'C.dtBlock) |
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, ("DTDrbd8", 'C.dtDrbd8) |
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, ("DTRbd", 'C.dtRbd) |
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]) |
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$(THH.makeJSONInstance ''DiskTemplate) |
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|
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instance HasStringRepr DiskTemplate where |
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fromStringRepr = diskTemplateFromRaw |
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toStringRepr = diskTemplateToRaw |
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|
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-- | The Group allocation policy type. |
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-- |
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-- Note that the order of constructors is important as the automatic |
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-- Ord instance will order them in the order they are defined, so when |
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-- changing this data type be careful about the interaction with the |
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-- desired sorting order. |
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$(THH.declareSADT "AllocPolicy" |
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[ ("AllocPreferred", 'C.allocPolicyPreferred) |
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, ("AllocLastResort", 'C.allocPolicyLastResort) |
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, ("AllocUnallocable", 'C.allocPolicyUnallocable) |
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]) |
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$(THH.makeJSONInstance ''AllocPolicy) |
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|
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-- | The Instance real state type. FIXME: this could be improved to |
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-- just wrap a /NormalState AdminStatus | ErrorState ErrorCondition/. |
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$(THH.declareSADT "InstanceStatus" |
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[ ("StatusDown", 'C.inststAdmindown) |
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, ("StatusOffline", 'C.inststAdminoffline) |
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, ("ErrorDown", 'C.inststErrordown) |
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, ("ErrorUp", 'C.inststErrorup) |
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, ("NodeDown", 'C.inststNodedown) |
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, ("NodeOffline", 'C.inststNodeoffline) |
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, ("Running", 'C.inststRunning) |
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, ("WrongNode", 'C.inststWrongnode) |
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]) |
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$(THH.makeJSONInstance ''InstanceStatus) |
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|
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-- | Migration mode. |
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$(THH.declareSADT "MigrationMode" |
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[ ("MigrationLive", 'C.htMigrationLive) |
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, ("MigrationNonLive", 'C.htMigrationNonlive) |
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]) |
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$(THH.makeJSONInstance ''MigrationMode) |
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|
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-- | Verify optional checks. |
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$(THH.declareSADT "VerifyOptionalChecks" |
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[ ("VerifyNPlusOneMem", 'C.verifyNplusoneMem) |
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]) |
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$(THH.makeJSONInstance ''VerifyOptionalChecks) |
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|
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-- | Cluster verify error codes. |
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$(THH.declareSADT "CVErrorCode" |
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[ ("CvECLUSTERCFG", 'C.cvEclustercfgCode) |
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, ("CvECLUSTERCERT", 'C.cvEclustercertCode) |
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, ("CvECLUSTERFILECHECK", 'C.cvEclusterfilecheckCode) |
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, ("CvECLUSTERDANGLINGNODES", 'C.cvEclusterdanglingnodesCode) |
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, ("CvECLUSTERDANGLINGINST", 'C.cvEclusterdanglinginstCode) |
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, ("CvEINSTANCEBADNODE", 'C.cvEinstancebadnodeCode) |
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, ("CvEINSTANCEDOWN", 'C.cvEinstancedownCode) |
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, ("CvEINSTANCELAYOUT", 'C.cvEinstancelayoutCode) |
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, ("CvEINSTANCEMISSINGDISK", 'C.cvEinstancemissingdiskCode) |
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, ("CvEINSTANCEFAULTYDISK", 'C.cvEinstancefaultydiskCode) |
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, ("CvEINSTANCEWRONGNODE", 'C.cvEinstancewrongnodeCode) |
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, ("CvEINSTANCESPLITGROUPS", 'C.cvEinstancesplitgroupsCode) |
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, ("CvEINSTANCEPOLICY", 'C.cvEinstancepolicyCode) |
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, ("CvENODEDRBD", 'C.cvEnodedrbdCode) |
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, ("CvENODEDRBDHELPER", 'C.cvEnodedrbdhelperCode) |
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, ("CvENODEFILECHECK", 'C.cvEnodefilecheckCode) |
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, ("CvENODEHOOKS", 'C.cvEnodehooksCode) |
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, ("CvENODEHV", 'C.cvEnodehvCode) |
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, ("CvENODELVM", 'C.cvEnodelvmCode) |
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, ("CvENODEN1", 'C.cvEnoden1Code) |
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, ("CvENODENET", 'C.cvEnodenetCode) |
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, ("CvENODEOS", 'C.cvEnodeosCode) |
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, ("CvENODEORPHANINSTANCE", 'C.cvEnodeorphaninstanceCode) |
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, ("CvENODEORPHANLV", 'C.cvEnodeorphanlvCode) |
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, ("CvENODERPC", 'C.cvEnoderpcCode) |
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, ("CvENODESSH", 'C.cvEnodesshCode) |
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, ("CvENODEVERSION", 'C.cvEnodeversionCode) |
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, ("CvENODESETUP", 'C.cvEnodesetupCode) |
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, ("CvENODETIME", 'C.cvEnodetimeCode) |
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, ("CvENODEOOBPATH", 'C.cvEnodeoobpathCode) |
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, ("CvENODEUSERSCRIPTS", 'C.cvEnodeuserscriptsCode) |
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, ("CvENODEFILESTORAGEPATHS", 'C.cvEnodefilestoragepathsCode) |
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]) |
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$(THH.makeJSONInstance ''CVErrorCode) |
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|
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-- | Dynamic device modification, just add\/remove version. |
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$(THH.declareSADT "DdmSimple" |
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[ ("DdmSimpleAdd", 'C.ddmAdd) |
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, ("DdmSimpleRemove", 'C.ddmRemove) |
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]) |
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$(THH.makeJSONInstance ''DdmSimple) |
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|
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-- | Dynamic device modification, all operations version. |
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$(THH.declareSADT "DdmFull" |
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[ ("DdmFullAdd", 'C.ddmAdd) |
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, ("DdmFullRemove", 'C.ddmRemove) |
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, ("DdmFullModify", 'C.ddmModify) |
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]) |
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$(THH.makeJSONInstance ''DdmFull) |
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|
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-- | Hypervisor type definitions. |
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$(THH.declareSADT "Hypervisor" |
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[ ( "Kvm", 'C.htKvm ) |
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, ( "XenPvm", 'C.htXenPvm ) |
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, ( "Chroot", 'C.htChroot ) |
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, ( "XenHvm", 'C.htXenHvm ) |
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, ( "Lxc", 'C.htLxc ) |
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, ( "Fake", 'C.htFake ) |
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]) |
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$(THH.makeJSONInstance ''Hypervisor) |
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|
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-- | Oob command type. |
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$(THH.declareSADT "OobCommand" |
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[ ("OobHealth", 'C.oobHealth) |
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, ("OobPowerCycle", 'C.oobPowerCycle) |
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, ("OobPowerOff", 'C.oobPowerOff) |
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, ("OobPowerOn", 'C.oobPowerOn) |
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, ("OobPowerStatus", 'C.oobPowerStatus) |
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]) |
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$(THH.makeJSONInstance ''OobCommand) |
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|
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-- | Storage type. |
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$(THH.declareSADT "StorageType" |
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[ ("StorageFile", 'C.stFile) |
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, ("StorageLvmPv", 'C.stLvmPv) |
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, ("StorageLvmVg", 'C.stLvmVg) |
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]) |
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$(THH.makeJSONInstance ''StorageType) |
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|
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-- | Node evac modes. |
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$(THH.declareSADT "NodeEvacMode" |
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[ ("NEvacPrimary", 'C.iallocatorNevacPri) |
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, ("NEvacSecondary", 'C.iallocatorNevacSec) |
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, ("NEvacAll", 'C.iallocatorNevacAll) |
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]) |
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$(THH.makeJSONInstance ''NodeEvacMode) |
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|
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-- | The file driver type. |
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$(THH.declareSADT "FileDriver" |
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[ ("FileLoop", 'C.fdLoop) |
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, ("FileBlktap", 'C.fdBlktap) |
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]) |
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$(THH.makeJSONInstance ''FileDriver) |
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|
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-- | The instance create mode. |
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$(THH.declareSADT "InstCreateMode" |
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[ ("InstCreate", 'C.instanceCreate) |
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, ("InstImport", 'C.instanceImport) |
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, ("InstRemoteImport", 'C.instanceRemoteImport) |
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]) |
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$(THH.makeJSONInstance ''InstCreateMode) |
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|
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-- | Reboot type. |
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$(THH.declareSADT "RebootType" |
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[ ("RebootSoft", 'C.instanceRebootSoft) |
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, ("RebootHard", 'C.instanceRebootHard) |
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, ("RebootFull", 'C.instanceRebootFull) |
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]) |
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$(THH.makeJSONInstance ''RebootType) |
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|
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-- | Export modes. |
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$(THH.declareSADT "ExportMode" |
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[ ("ExportModeLocal", 'C.exportModeLocal) |
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, ("ExportModeRemove", 'C.exportModeRemote) |
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]) |
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$(THH.makeJSONInstance ''ExportMode) |
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|
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-- | IAllocator run types (OpTestIAllocator). |
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$(THH.declareSADT "IAllocatorTestDir" |
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[ ("IAllocatorDirIn", 'C.iallocatorDirIn) |
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, ("IAllocatorDirOut", 'C.iallocatorDirOut) |
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]) |
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$(THH.makeJSONInstance ''IAllocatorTestDir) |
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|
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-- | IAllocator mode. FIXME: use this in "HTools.Backend.IAlloc". |
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$(THH.declareSADT "IAllocatorMode" |
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[ ("IAllocatorAlloc", 'C.iallocatorModeAlloc) |
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, ("IAllocatorMultiAlloc", 'C.iallocatorModeMultiAlloc) |
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, ("IAllocatorReloc", 'C.iallocatorModeReloc) |
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, ("IAllocatorNodeEvac", 'C.iallocatorModeNodeEvac) |
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, ("IAllocatorChangeGroup", 'C.iallocatorModeChgGroup) |
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]) |
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$(THH.makeJSONInstance ''IAllocatorMode) |
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|
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-- | Network type. |
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$(THH.declareSADT "NetworkType" |
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[ ("PrivateNetwork", 'C.networkTypePrivate) |
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, ("PublicNetwork", 'C.networkTypePublic) |
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]) |
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$(THH.makeJSONInstance ''NetworkType) |
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|
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-- | Netork mode. |
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$(THH.declareSADT "NICMode" |
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[ ("NMBridged", 'C.nicModeBridged) |
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, ("NMRouted", 'C.nicModeRouted) |
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, ("NMOvs", 'C.nicModeOvs) |
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]) |
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$(THH.makeJSONInstance ''NICMode) |
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|
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-- | The JobStatus data type. Note that this is ordered especially |
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-- such that greater\/lesser comparison on values of this type makes |
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-- sense. |
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$(THH.declareSADT "JobStatus" |
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[ ("JOB_STATUS_QUEUED", 'C.jobStatusQueued) |
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, ("JOB_STATUS_WAITING", 'C.jobStatusWaiting) |
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, ("JOB_STATUS_CANCELING", 'C.jobStatusCanceling) |
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, ("JOB_STATUS_RUNNING", 'C.jobStatusRunning) |
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, ("JOB_STATUS_CANCELED", 'C.jobStatusCanceled) |
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, ("JOB_STATUS_SUCCESS", 'C.jobStatusSuccess) |
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, ("JOB_STATUS_ERROR", 'C.jobStatusError) |
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]) |
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$(THH.makeJSONInstance ''JobStatus) |
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|
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-- | Finalized job status. |
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$(THH.declareSADT "FinalizedJobStatus" |
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[ ("JobStatusCanceled", 'C.jobStatusCanceled) |
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, ("JobStatusSuccessful", 'C.jobStatusSuccess) |
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, ("JobStatusFailed", 'C.jobStatusError) |
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]) |
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$(THH.makeJSONInstance ''FinalizedJobStatus) |
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|
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-- | The Ganeti job type. |
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newtype JobId = JobId { fromJobId :: Int } |
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deriving (Show, Eq) |
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|
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-- | Builds a job ID. |
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makeJobId :: (Monad m) => Int -> m JobId |
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makeJobId i | i >= 0 = return $ JobId i |
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| otherwise = fail $ "Invalid value for job ID ' " ++ show i ++ "'" |
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|
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-- | Parses a job ID. |
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parseJobId :: (Monad m) => JSON.JSValue -> m JobId |
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parseJobId (JSON.JSString x) = |
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tryRead "parsing job id" (JSON.fromJSString x) >>= makeJobId |
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parseJobId (JSON.JSRational _ x) = |
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if denominator x /= 1 |
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then fail $ "Got fractional job ID from master daemon?! Value:" ++ show x |
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-- FIXME: potential integer overflow here on 32-bit platforms |
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else makeJobId . fromIntegral . numerator $ x |
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parseJobId x = fail $ "Wrong type/value for job id: " ++ show x |
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|
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instance JSON.JSON JobId where |
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showJSON = JSON.showJSON . fromJobId |
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readJSON = parseJobId |
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|
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-- | Relative job ID type alias. |
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type RelativeJobId = Negative Int |
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|
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-- | Job ID dependency. |
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data JobIdDep = JobDepRelative RelativeJobId |
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| JobDepAbsolute JobId |
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deriving (Show, Eq) |
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|
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instance JSON.JSON JobIdDep where |
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showJSON (JobDepRelative i) = showJSON i |
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showJSON (JobDepAbsolute i) = showJSON i |
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readJSON v = |
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case JSON.readJSON v::JSON.Result (Negative Int) of |
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-- first try relative dependency, usually most common |
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JSON.Ok r -> return $ JobDepRelative r |
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JSON.Error _ -> liftM JobDepAbsolute |
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(fromJResult "parsing absolute job id" (readJSON v) >>= |
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makeJobId) |
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|
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-- | Job Dependency type. |
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data JobDependency = JobDependency JobIdDep [FinalizedJobStatus] |
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deriving (Show, Eq) |
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|
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instance JSON JobDependency where |
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showJSON (JobDependency dep status) = showJSON (dep, status) |
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readJSON = liftM (uncurry JobDependency) . readJSON |
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|
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-- | Valid opcode priorities for submit. |
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$(THH.declareIADT "OpSubmitPriority" |
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[ ("OpPrioLow", 'C.opPrioLow) |
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, ("OpPrioNormal", 'C.opPrioNormal) |
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, ("OpPrioHigh", 'C.opPrioHigh) |
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]) |
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$(THH.makeJSONInstance ''OpSubmitPriority) |
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|
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-- | Our ADT for the OpCode status at runtime (while in a job). |
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$(THH.declareSADT "OpStatus" |
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[ ("OP_STATUS_QUEUED", 'C.opStatusQueued) |
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, ("OP_STATUS_WAITING", 'C.opStatusWaiting) |
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, ("OP_STATUS_CANCELING", 'C.opStatusCanceling) |
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, ("OP_STATUS_RUNNING", 'C.opStatusRunning) |
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, ("OP_STATUS_CANCELED", 'C.opStatusCanceled) |
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, ("OP_STATUS_SUCCESS", 'C.opStatusSuccess) |
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, ("OP_STATUS_ERROR", 'C.opStatusError) |
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]) |
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$(THH.makeJSONInstance ''OpStatus) |
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|
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-- | Type for the job message type. |
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$(THH.declareSADT "ELogType" |
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[ ("ELogMessage", 'C.elogMessage) |
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, ("ELogRemoteImport", 'C.elogRemoteImport) |
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, ("ELogJqueueTest", 'C.elogJqueueTest) |
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]) |
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$(THH.makeJSONInstance ''ELogType) |