## root / src / Ganeti / Types.hs @ 59bcd180

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{-# LANGUAGE TemplateHaskell #-} |
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{-| Some common Ganeti types. |

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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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Copyright (C) 2012, 2013 Google Inc. |

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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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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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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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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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, TagKind(..) |

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, tagKindToRaw |

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, tagKindFromRaw |

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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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, QueryResultCode |

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, IPv4Address |

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, mkIPv4Address |

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, IPv4Network |

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, mkIPv4Network |

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, IPv6Address |

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, mkIPv6Address |

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, IPv6Network |

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, mkIPv6Network |

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, MigrationMode(..) |

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, migrationModeToRaw |

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, VerifyOptionalChecks(..) |

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, verifyOptionalChecksToRaw |

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, DdmSimple(..) |

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, DdmFull(..) |

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, ddmFullToRaw |

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, CVErrorCode(..) |

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, cVErrorCodeToRaw |

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, Hypervisor(..) |

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, hypervisorToRaw |

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, OobCommand(..) |

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, oobCommandToRaw |

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, OobStatus(..) |

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, oobStatusToRaw |

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, StorageType(..) |

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, storageTypeToRaw |

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, EvacMode(..) |

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, evacModeToRaw |

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, FileDriver(..) |

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, fileDriverToRaw |

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, InstCreateMode(..) |

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, instCreateModeToRaw |

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, RebootType(..) |

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, rebootTypeToRaw |

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, ExportMode(..) |

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, exportModeToRaw |

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, IAllocatorTestDir(..) |

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, iAllocatorTestDirToRaw |

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, IAllocatorMode(..) |

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, iAllocatorModeToRaw |

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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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, makeJobIdS |

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, RelativeJobId |

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, JobIdDep(..) |

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, JobDependency(..) |

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, OpSubmitPriority(..) |

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, opSubmitPriorityToRaw |

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, parseSubmitPriority |

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, fmtSubmitPriority |

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, OpStatus(..) |

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, opStatusToRaw |

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, opStatusFromRaw |

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, ELogType(..) |

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, eLogTypeToRaw |

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, ReasonElem |

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, ReasonTrail |

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, StorageUnit(..) |

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, StorageUnitRaw(..) |

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, StorageKey |

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, addParamsToStorageUnit |

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, diskTemplateToStorageType |

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, VType(..) |

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, vTypeFromRaw |

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, vTypeToRaw |

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, NodeRole(..) |

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, nodeRoleToRaw |

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, roleDescription |

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, DiskMode(..) |

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, diskModeToRaw |

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, BlockDriver(..) |

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, blockDriverToRaw |

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, AdminState(..) |

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, adminStateFromRaw |

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, adminStateToRaw |

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, StorageField(..) |

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, storageFieldToRaw |

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, DiskAccessMode(..) |

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, diskAccessModeToRaw |

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, LocalDiskStatus(..) |

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, localDiskStatusFromRaw |

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, localDiskStatusToRaw |

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, localDiskStatusName |

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, ReplaceDisksMode(..) |

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, replaceDisksModeToRaw |

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, RpcTimeout(..) |

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, rpcTimeoutFromRaw -- FIXME: no used anywhere |

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, rpcTimeoutToRaw |

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) where |

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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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import qualified Ganeti.ConstantUtils as ConstantUtils |

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import Ganeti.JSON |

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import qualified Ganeti.THH as THH |

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import Ganeti.Utils |

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-- * Generic types |

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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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-- | 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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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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-- | 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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-- | 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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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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-- | 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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-- | 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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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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-- | 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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-- | 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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instance (Eq a, Ord a) => Ord (NonEmpty a) where |

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NonEmpty { fromNonEmpty = x1 } `compare` NonEmpty { fromNonEmpty = x2 } = |

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x1 `compare` x2 |

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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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-- | A simple type alias for non-empty strings. |

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type NonEmptyString = NonEmpty Char |

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type QueryResultCode = Int |

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newtype IPv4Address = IPv4Address { fromIPv4Address :: String } |

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deriving (Show, Eq) |

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-- FIXME: this should check that 'address' is a valid ip |

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mkIPv4Address :: Monad m => String -> m IPv4Address |

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mkIPv4Address address = |

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return IPv4Address { fromIPv4Address = address } |

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instance JSON.JSON IPv4Address where |

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showJSON = JSON.showJSON . fromIPv4Address |

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readJSON v = JSON.readJSON v >>= mkIPv4Address |

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newtype IPv4Network = IPv4Network { fromIPv4Network :: String } |

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deriving (Show, Eq) |

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-- FIXME: this should check that 'address' is a valid ip |

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mkIPv4Network :: Monad m => String -> m IPv4Network |

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mkIPv4Network address = |

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return IPv4Network { fromIPv4Network = address } |

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instance JSON.JSON IPv4Network where |

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showJSON = JSON.showJSON . fromIPv4Network |

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readJSON v = JSON.readJSON v >>= mkIPv4Network |

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newtype IPv6Address = IPv6Address { fromIPv6Address :: String } |

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deriving (Show, Eq) |

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-- FIXME: this should check that 'address' is a valid ip |

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mkIPv6Address :: Monad m => String -> m IPv6Address |

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mkIPv6Address address = |

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return IPv6Address { fromIPv6Address = address } |

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instance JSON.JSON IPv6Address where |

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showJSON = JSON.showJSON . fromIPv6Address |

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readJSON v = JSON.readJSON v >>= mkIPv6Address |

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newtype IPv6Network = IPv6Network { fromIPv6Network :: String } |

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deriving (Show, Eq) |

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-- FIXME: this should check that 'address' is a valid ip |

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mkIPv6Network :: Monad m => String -> m IPv6Network |

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mkIPv6Network address = |

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return IPv6Network { fromIPv6Network = address } |

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instance JSON.JSON IPv6Network where |

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showJSON = JSON.showJSON . fromIPv6Network |

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readJSON v = JSON.readJSON v >>= mkIPv6Network |

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-- * Ganeti types |

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-- | Instance disk template type. |

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$(THH.declareLADT ''String "DiskTemplate" |

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[ ("DTDiskless", "diskless") |

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, ("DTFile", "file") |

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, ("DTSharedFile", "sharedfile") |

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, ("DTPlain", "plain") |

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, ("DTBlock", "blockdev") |

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, ("DTDrbd8", "drbd") |

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, ("DTRbd", "rbd") |

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, ("DTExt", "ext") |

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]) |

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$(THH.makeJSONInstance ''DiskTemplate) |

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instance THH.PyValue DiskTemplate where |

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showValue = show . diskTemplateToRaw |

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instance HasStringRepr DiskTemplate where |

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fromStringRepr = diskTemplateFromRaw |

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toStringRepr = diskTemplateToRaw |

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-- | Data type representing what items the tag operations apply to. |

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$(THH.declareLADT ''String "TagKind" |

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[ ("TagKindInstance", "instance") |

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, ("TagKindNode", "node") |

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, ("TagKindGroup", "nodegroup") |

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, ("TagKindCluster", "cluster") |

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, ("TagKindNetwork", "network") |

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]) |

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$(THH.makeJSONInstance ''TagKind) |

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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.declareLADT ''String "AllocPolicy" |

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[ ("AllocPreferred", "preferred") |

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, ("AllocLastResort", "last_resort") |

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, ("AllocUnallocable", "unallocable") |

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]) |

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$(THH.makeJSONInstance ''AllocPolicy) |

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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.declareLADT ''String "InstanceStatus" |

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[ ("StatusDown", "ADMIN_down") |

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, ("StatusOffline", "ADMIN_offline") |

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, ("ErrorDown", "ERROR_down") |

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, ("ErrorUp", "ERROR_up") |

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, ("NodeDown", "ERROR_nodedown") |

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, ("NodeOffline", "ERROR_nodeoffline") |

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, ("Running", "running") |

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, ("WrongNode", "ERROR_wrongnode") |

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]) |

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$(THH.makeJSONInstance ''InstanceStatus) |

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-- | Migration mode. |

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$(THH.declareLADT ''String "MigrationMode" |

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[ ("MigrationLive", "live") |

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, ("MigrationNonLive", "non-live") |

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]) |

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$(THH.makeJSONInstance ''MigrationMode) |

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-- | Verify optional checks. |

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$(THH.declareLADT ''String "VerifyOptionalChecks" |

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[ ("VerifyNPlusOneMem", "nplusone_mem") |

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]) |

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$(THH.makeJSONInstance ''VerifyOptionalChecks) |

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-- | Cluster verify error codes. |

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$(THH.declareLADT ''String "CVErrorCode" |

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[ ("CvECLUSTERCFG", "ECLUSTERCFG") |

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, ("CvECLUSTERCERT", "ECLUSTERCERT") |

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, ("CvECLUSTERFILECHECK", "ECLUSTERFILECHECK") |

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, ("CvECLUSTERDANGLINGNODES", "ECLUSTERDANGLINGNODES") |

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, ("CvECLUSTERDANGLINGINST", "ECLUSTERDANGLINGINST") |

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, ("CvEINSTANCEBADNODE", "EINSTANCEBADNODE") |

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, ("CvEINSTANCEDOWN", "EINSTANCEDOWN") |

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, ("CvEINSTANCELAYOUT", "EINSTANCELAYOUT") |

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, ("CvEINSTANCEMISSINGDISK", "EINSTANCEMISSINGDISK") |

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, ("CvEINSTANCEFAULTYDISK", "EINSTANCEFAULTYDISK") |

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, ("CvEINSTANCEWRONGNODE", "EINSTANCEWRONGNODE") |

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, ("CvEINSTANCESPLITGROUPS", "EINSTANCESPLITGROUPS") |

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, ("CvEINSTANCEPOLICY", "EINSTANCEPOLICY") |

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, ("CvEINSTANCEUNSUITABLENODE", "EINSTANCEUNSUITABLENODE") |

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, ("CvEINSTANCEMISSINGCFGPARAMETER", "EINSTANCEMISSINGCFGPARAMETER") |

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, ("CvENODEDRBD", "ENODEDRBD") |

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, ("CvENODEDRBDVERSION", "ENODEDRBDVERSION") |

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, ("CvENODEDRBDHELPER", "ENODEDRBDHELPER") |

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, ("CvENODEFILECHECK", "ENODEFILECHECK") |

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, ("CvENODEHOOKS", "ENODEHOOKS") |

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, ("CvENODEHV", "ENODEHV") |

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, ("CvENODELVM", "ENODELVM") |

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, ("CvENODEN1", "ENODEN1") |

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, ("CvENODENET", "ENODENET") |

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, ("CvENODEOS", "ENODEOS") |

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, ("CvENODEORPHANINSTANCE", "ENODEORPHANINSTANCE") |

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, ("CvENODEORPHANLV", "ENODEORPHANLV") |

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, ("CvENODERPC", "ENODERPC") |

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, ("CvENODESSH", "ENODESSH") |

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, ("CvENODEVERSION", "ENODEVERSION") |

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, ("CvENODESETUP", "ENODESETUP") |

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, ("CvENODETIME", "ENODETIME") |

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, ("CvENODEOOBPATH", "ENODEOOBPATH") |

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, ("CvENODEUSERSCRIPTS", "ENODEUSERSCRIPTS") |

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, ("CvENODEFILESTORAGEPATHS", "ENODEFILESTORAGEPATHS") |

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, ("CvENODEFILESTORAGEPATHUNUSABLE", "ENODEFILESTORAGEPATHUNUSABLE") |

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, ("CvENODESHAREDFILESTORAGEPATHUNUSABLE", |

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"ENODESHAREDFILESTORAGEPATHUNUSABLE") |

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, ("CvEGROUPDIFFERENTPVSIZE", "EGROUPDIFFERENTPVSIZE") |

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]) |

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$(THH.makeJSONInstance ''CVErrorCode) |

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-- | Dynamic device modification, just add\/remove version. |

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$(THH.declareLADT ''String "DdmSimple" |

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[ ("DdmSimpleAdd", "add") |

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, ("DdmSimpleRemove", "remove") |

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]) |

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$(THH.makeJSONInstance ''DdmSimple) |

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-- | Dynamic device modification, all operations version. |

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-- |

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-- TODO: DDM_SWAP, DDM_MOVE? |

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$(THH.declareLADT ''String "DdmFull" |

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[ ("DdmFullAdd", "add") |

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, ("DdmFullRemove", "remove") |

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, ("DdmFullModify", "modify") |

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]) |

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$(THH.makeJSONInstance ''DdmFull) |

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-- | Hypervisor type definitions. |

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$(THH.declareLADT ''String "Hypervisor" |

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[ ("Kvm", "kvm") |

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, ("XenPvm", "xen-pvm") |

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, ("Chroot", "chroot") |

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, ("XenHvm", "xen-hvm") |

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, ("Lxc", "lxc") |

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, ("Fake", "fake") |

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]) |

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$(THH.makeJSONInstance ''Hypervisor) |

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instance THH.PyValue Hypervisor where |

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showValue = show . hypervisorToRaw |

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-- | Oob command type. |

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$(THH.declareLADT ''String "OobCommand" |

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[ ("OobHealth", "health") |

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, ("OobPowerCycle", "power-cycle") |

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, ("OobPowerOff", "power-off") |

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, ("OobPowerOn", "power-on") |

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, ("OobPowerStatus", "power-status") |

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]) |

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$(THH.makeJSONInstance ''OobCommand) |

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-- | Oob command status |

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$(THH.declareLADT ''String "OobStatus" |

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[ ("OobStatusCritical", "CRITICAL") |

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, ("OobStatusOk", "OK") |

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, ("OobStatusUnknown", "UNKNOWN") |

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, ("OobStatusWarning", "WARNING") |

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]) |

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$(THH.makeJSONInstance ''OobStatus) |

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-- | Storage type. |

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$(THH.declareLADT ''String "StorageType" |

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[ ("StorageFile", "file") |

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, ("StorageLvmPv", "lvm-pv") |

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, ("StorageLvmVg", "lvm-vg") |

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, ("StorageDiskless", "diskless") |

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, ("StorageBlock", "blockdev") |

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, ("StorageRados", "rados") |

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, ("StorageExt", "ext") |

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]) |

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$(THH.makeJSONInstance ''StorageType) |

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-- | Storage keys are identifiers for storage units. Their content varies |

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-- depending on the storage type, for example a storage key for LVM storage |

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-- is the volume group name. |

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type StorageKey = String |

463 | |

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-- | Storage parameters |

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type SPExclusiveStorage = Bool |

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-- | Storage units without storage-type-specific parameters |

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data StorageUnitRaw = SURaw StorageType StorageKey |

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-- | Full storage unit with storage-type-specific parameters |

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data StorageUnit = SUFile StorageKey |

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| SULvmPv StorageKey SPExclusiveStorage |

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| SULvmVg StorageKey SPExclusiveStorage |

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| SUDiskless StorageKey |

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| SUBlock StorageKey |

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| SURados StorageKey |

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| SUExt StorageKey |

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deriving (Eq) |

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instance Show StorageUnit where |

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show (SUFile key) = showSUSimple StorageFile key |

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show (SULvmPv key es) = showSULvm StorageLvmPv key es |

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show (SULvmVg key es) = showSULvm StorageLvmVg key es |

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show (SUDiskless key) = showSUSimple StorageDiskless key |

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show (SUBlock key) = showSUSimple StorageBlock key |

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show (SURados key) = showSUSimple StorageRados key |

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show (SUExt key) = showSUSimple StorageExt key |

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instance JSON StorageUnit where |

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showJSON (SUFile key) = showJSON (StorageFile, key, []::[String]) |

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showJSON (SULvmPv key es) = showJSON (StorageLvmPv, key, [es]) |

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showJSON (SULvmVg key es) = showJSON (StorageLvmVg, key, [es]) |

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showJSON (SUDiskless key) = showJSON (StorageDiskless, key, []::[String]) |

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showJSON (SUBlock key) = showJSON (StorageBlock, key, []::[String]) |

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showJSON (SURados key) = showJSON (StorageRados, key, []::[String]) |

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showJSON (SUExt key) = showJSON (StorageExt, key, []::[String]) |

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-- FIXME: add readJSON implementation |

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readJSON = fail "Not implemented" |

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-- | Composes a string representation of storage types without |

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-- storage parameters |

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showSUSimple :: StorageType -> StorageKey -> String |

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showSUSimple st sk = show (storageTypeToRaw st, sk, []::[String]) |

504 | |

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-- | Composes a string representation of the LVM storage types |

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showSULvm :: StorageType -> StorageKey -> SPExclusiveStorage -> String |

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showSULvm st sk es = show (storageTypeToRaw st, sk, [es]) |

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-- | Mapping from disk templates to storage types |

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-- FIXME: This is semantically the same as the constant |

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-- C.diskTemplatesStorageType, remove this when python constants |

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-- are generated from haskell constants |

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diskTemplateToStorageType :: DiskTemplate -> StorageType |

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diskTemplateToStorageType DTExt = StorageExt |

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diskTemplateToStorageType DTFile = StorageFile |

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diskTemplateToStorageType DTSharedFile = StorageFile |

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diskTemplateToStorageType DTDrbd8 = StorageLvmVg |

518 |
diskTemplateToStorageType DTPlain = StorageLvmVg |

519 |
diskTemplateToStorageType DTRbd = StorageRados |

520 |
diskTemplateToStorageType DTDiskless = StorageDiskless |

521 |
diskTemplateToStorageType DTBlock = StorageBlock |

522 | |

523 |
-- | Equips a raw storage unit with its parameters |

524 |
addParamsToStorageUnit :: SPExclusiveStorage -> StorageUnitRaw -> StorageUnit |

525 |
addParamsToStorageUnit _ (SURaw StorageBlock key) = SUBlock key |

526 |
addParamsToStorageUnit _ (SURaw StorageDiskless key) = SUDiskless key |

527 |
addParamsToStorageUnit _ (SURaw StorageExt key) = SUExt key |

528 |
addParamsToStorageUnit _ (SURaw StorageFile key) = SUFile key |

529 |
addParamsToStorageUnit es (SURaw StorageLvmPv key) = SULvmPv key es |

530 |
addParamsToStorageUnit es (SURaw StorageLvmVg key) = SULvmVg key es |

531 |
addParamsToStorageUnit _ (SURaw StorageRados key) = SURados key |

532 | |

533 |
-- | Node evac modes. |

534 |
-- |

535 |
-- This is part of the 'IAllocator' interface and it is used, for |

536 |
-- example, in 'Ganeti.HTools.Loader.RqType'. However, it must reside |

537 |
-- in this module, and not in 'Ganeti.HTools.Types', because it is |

538 |
-- also used by 'Ganeti.HsConstants'. |

539 |
$(THH.declareLADT ''String "EvacMode" |

540 |
[ ("ChangePrimary", "primary-only") |

541 |
, ("ChangeSecondary", "secondary-only") |

542 |
, ("ChangeAll", "all") |

543 |
]) |

544 |
$(THH.makeJSONInstance ''EvacMode) |

545 | |

546 |
-- | The file driver type. |

547 |
$(THH.declareLADT ''String "FileDriver" |

548 |
[ ("FileLoop", "loop") |

549 |
, ("FileBlktap", "blktap") |

550 |
]) |

551 |
$(THH.makeJSONInstance ''FileDriver) |

552 | |

553 |
-- | The instance create mode. |

554 |
$(THH.declareLADT ''String "InstCreateMode" |

555 |
[ ("InstCreate", "create") |

556 |
, ("InstImport", "import") |

557 |
, ("InstRemoteImport", "remote-import") |

558 |
]) |

559 |
$(THH.makeJSONInstance ''InstCreateMode) |

560 | |

561 |
-- | Reboot type. |

562 |
$(THH.declareLADT ''String "RebootType" |

563 |
[ ("RebootSoft", "soft") |

564 |
, ("RebootHard", "hard") |

565 |
, ("RebootFull", "full") |

566 |
]) |

567 |
$(THH.makeJSONInstance ''RebootType) |

568 | |

569 |
-- | Export modes. |

570 |
$(THH.declareLADT ''String "ExportMode" |

571 |
[ ("ExportModeLocal", "local") |

572 |
, ("ExportModeRemote", "remote") |

573 |
]) |

574 |
$(THH.makeJSONInstance ''ExportMode) |

575 | |

576 |
-- | IAllocator run types (OpTestIAllocator). |

577 |
$(THH.declareLADT ''String "IAllocatorTestDir" |

578 |
[ ("IAllocatorDirIn", "in") |

579 |
, ("IAllocatorDirOut", "out") |

580 |
]) |

581 |
$(THH.makeJSONInstance ''IAllocatorTestDir) |

582 | |

583 |
-- | IAllocator mode. FIXME: use this in "HTools.Backend.IAlloc". |

584 |
$(THH.declareLADT ''String "IAllocatorMode" |

585 |
[ ("IAllocatorAlloc", "allocate") |

586 |
, ("IAllocatorMultiAlloc", "multi-allocate") |

587 |
, ("IAllocatorReloc", "relocate") |

588 |
, ("IAllocatorNodeEvac", "node-evacuate") |

589 |
, ("IAllocatorChangeGroup", "change-group") |

590 |
]) |

591 |
$(THH.makeJSONInstance ''IAllocatorMode) |

592 | |

593 |
-- | Network mode. |

594 |
$(THH.declareLADT ''String "NICMode" |

595 |
[ ("NMBridged", "bridged") |

596 |
, ("NMRouted", "routed") |

597 |
, ("NMOvs", "openvswitch") |

598 |
, ("NMPool", "pool") |

599 |
]) |

600 |
$(THH.makeJSONInstance ''NICMode) |

601 | |

602 |
-- | The JobStatus data type. Note that this is ordered especially |

603 |
-- such that greater\/lesser comparison on values of this type makes |

604 |
-- sense. |

605 |
$(THH.declareLADT ''String "JobStatus" |

606 |
[ ("JOB_STATUS_QUEUED", "queued") |

607 |
, ("JOB_STATUS_WAITING", "waiting") |

608 |
, ("JOB_STATUS_CANCELING", "canceling") |

609 |
, ("JOB_STATUS_RUNNING", "running") |

610 |
, ("JOB_STATUS_CANCELED", "canceled") |

611 |
, ("JOB_STATUS_SUCCESS", "success") |

612 |
, ("JOB_STATUS_ERROR", "error") |

613 |
]) |

614 |
$(THH.makeJSONInstance ''JobStatus) |

615 | |

616 |
-- | Finalized job status. |

617 |
$(THH.declareLADT ''String "FinalizedJobStatus" |

618 |
[ ("JobStatusCanceled", "canceled") |

619 |
, ("JobStatusSuccessful", "success") |

620 |
, ("JobStatusFailed", "error") |

621 |
]) |

622 |
$(THH.makeJSONInstance ''FinalizedJobStatus) |

623 | |

624 |
-- | The Ganeti job type. |

625 |
newtype JobId = JobId { fromJobId :: Int } |

626 |
deriving (Show, Eq) |

627 | |

628 |
-- | Builds a job ID. |

629 |
makeJobId :: (Monad m) => Int -> m JobId |

630 |
makeJobId i | i >= 0 = return $ JobId i |

631 |
| otherwise = fail $ "Invalid value for job ID ' " ++ show i ++ "'" |

632 | |

633 |
-- | Builds a job ID from a string. |

634 |
makeJobIdS :: (Monad m) => String -> m JobId |

635 |
makeJobIdS s = tryRead "parsing job id" s >>= makeJobId |

636 | |

637 |
-- | Parses a job ID. |

638 |
parseJobId :: (Monad m) => JSON.JSValue -> m JobId |

639 |
parseJobId (JSON.JSString x) = makeJobIdS $ JSON.fromJSString x |

640 |
parseJobId (JSON.JSRational _ x) = |

641 |
if denominator x /= 1 |

642 |
then fail $ "Got fractional job ID from master daemon?! Value:" ++ show x |

643 |
-- FIXME: potential integer overflow here on 32-bit platforms |

644 |
else makeJobId . fromIntegral . numerator $ x |

645 |
parseJobId x = fail $ "Wrong type/value for job id: " ++ show x |

646 | |

647 |
instance JSON.JSON JobId where |

648 |
showJSON = JSON.showJSON . fromJobId |

649 |
readJSON = parseJobId |

650 | |

651 |
-- | Relative job ID type alias. |

652 |
type RelativeJobId = Negative Int |

653 | |

654 |
-- | Job ID dependency. |

655 |
data JobIdDep = JobDepRelative RelativeJobId |

656 |
| JobDepAbsolute JobId |

657 |
deriving (Show, Eq) |

658 | |

659 |
instance JSON.JSON JobIdDep where |

660 |
showJSON (JobDepRelative i) = showJSON i |

661 |
showJSON (JobDepAbsolute i) = showJSON i |

662 |
readJSON v = |

663 |
case JSON.readJSON v::JSON.Result (Negative Int) of |

664 |
-- first try relative dependency, usually most common |

665 |
JSON.Ok r -> return $ JobDepRelative r |

666 |
JSON.Error _ -> liftM JobDepAbsolute (parseJobId v) |

667 | |

668 |
-- | Job Dependency type. |

669 |
data JobDependency = JobDependency JobIdDep [FinalizedJobStatus] |

670 |
deriving (Show, Eq) |

671 | |

672 |
instance JSON JobDependency where |

673 |
showJSON (JobDependency dep status) = showJSON (dep, status) |

674 |
readJSON = liftM (uncurry JobDependency) . readJSON |

675 | |

676 |
-- | Valid opcode priorities for submit. |

677 |
$(THH.declareIADT "OpSubmitPriority" |

678 |
[ ("OpPrioLow", 'ConstantUtils.priorityLow) |

679 |
, ("OpPrioNormal", 'ConstantUtils.priorityNormal) |

680 |
, ("OpPrioHigh", 'ConstantUtils.priorityHigh) |

681 |
]) |

682 |
$(THH.makeJSONInstance ''OpSubmitPriority) |

683 | |

684 |
-- | Parse submit priorities from a string. |

685 |
parseSubmitPriority :: (Monad m) => String -> m OpSubmitPriority |

686 |
parseSubmitPriority "low" = return OpPrioLow |

687 |
parseSubmitPriority "normal" = return OpPrioNormal |

688 |
parseSubmitPriority "high" = return OpPrioHigh |

689 |
parseSubmitPriority str = fail $ "Unknown priority '" ++ str ++ "'" |

690 | |

691 |
-- | Format a submit priority as string. |

692 |
fmtSubmitPriority :: OpSubmitPriority -> String |

693 |
fmtSubmitPriority OpPrioLow = "low" |

694 |
fmtSubmitPriority OpPrioNormal = "normal" |

695 |
fmtSubmitPriority OpPrioHigh = "high" |

696 | |

697 |
-- | Our ADT for the OpCode status at runtime (while in a job). |

698 |
$(THH.declareLADT ''String "OpStatus" |

699 |
[ ("OP_STATUS_QUEUED", "queued") |

700 |
, ("OP_STATUS_WAITING", "waiting") |

701 |
, ("OP_STATUS_CANCELING", "canceling") |

702 |
, ("OP_STATUS_RUNNING", "running") |

703 |
, ("OP_STATUS_CANCELED", "canceled") |

704 |
, ("OP_STATUS_SUCCESS", "success") |

705 |
, ("OP_STATUS_ERROR", "error") |

706 |
]) |

707 |
$(THH.makeJSONInstance ''OpStatus) |

708 | |

709 |
-- | Type for the job message type. |

710 |
$(THH.declareLADT ''String "ELogType" |

711 |
[ ("ELogMessage", "message") |

712 |
, ("ELogRemoteImport", "remote-import") |

713 |
, ("ELogJqueueTest", "jqueue-test") |

714 |
]) |

715 |
$(THH.makeJSONInstance ''ELogType) |

716 | |

717 |
-- | Type of one element of a reason trail. |

718 |
type ReasonElem = (String, String, Integer) |

719 | |

720 |
-- | Type representing a reason trail. |

721 |
type ReasonTrail = [ReasonElem] |

722 | |

723 |
-- | The VTYPES, a mini-type system in Python. |

724 |
$(THH.declareLADT ''String "VType" |

725 |
[ ("VTypeString", "string") |

726 |
, ("VTypeMaybeString", "maybe-string") |

727 |
, ("VTypeBool", "bool") |

728 |
, ("VTypeSize", "size") |

729 |
, ("VTypeInt", "int") |

730 |
]) |

731 |
$(THH.makeJSONInstance ''VType) |

732 | |

733 |
instance THH.PyValue VType where |

734 |
showValue = THH.showValue . vTypeToRaw |

735 | |

736 |
-- * Node role type |

737 | |

738 |
$(THH.declareLADT ''String "NodeRole" |

739 |
[ ("NROffline", "O") |

740 |
, ("NRDrained", "D") |

741 |
, ("NRRegular", "R") |

742 |
, ("NRCandidate", "C") |

743 |
, ("NRMaster", "M") |

744 |
]) |

745 |
$(THH.makeJSONInstance ''NodeRole) |

746 | |

747 |
-- | The description of the node role. |

748 |
roleDescription :: NodeRole -> String |

749 |
roleDescription NROffline = "offline" |

750 |
roleDescription NRDrained = "drained" |

751 |
roleDescription NRRegular = "regular" |

752 |
roleDescription NRCandidate = "master candidate" |

753 |
roleDescription NRMaster = "master" |

754 | |

755 |
-- * Disk types |

756 | |

757 |
$(THH.declareLADT ''String "DiskMode" |

758 |
[ ("DiskRdOnly", "ro") |

759 |
, ("DiskRdWr", "rw") |

760 |
]) |

761 |
$(THH.makeJSONInstance ''DiskMode) |

762 | |

763 |
-- | The persistent block driver type. Currently only one type is allowed. |

764 |
$(THH.declareLADT ''String "BlockDriver" |

765 |
[ ("BlockDrvManual", "manual") |

766 |
]) |

767 |
$(THH.makeJSONInstance ''BlockDriver) |

768 | |

769 |
-- * Instance types |

770 | |

771 |
$(THH.declareLADT ''String "AdminState" |

772 |
[ ("AdminOffline", "offline") |

773 |
, ("AdminDown", "down") |

774 |
, ("AdminUp", "up") |

775 |
]) |

776 |
$(THH.makeJSONInstance ''AdminState) |

777 | |

778 |
-- * Storage field type |

779 | |

780 |
$(THH.declareLADT ''String "StorageField" |

781 |
[ ( "SFUsed", "used") |

782 |
, ( "SFName", "name") |

783 |
, ( "SFAllocatable", "allocatable") |

784 |
, ( "SFFree", "free") |

785 |
, ( "SFSize", "size") |

786 |
]) |

787 |
$(THH.makeJSONInstance ''StorageField) |

788 | |

789 |
-- * Disk access protocol |

790 | |

791 |
$(THH.declareLADT ''String "DiskAccessMode" |

792 |
[ ( "DiskUserspace", "userspace") |

793 |
, ( "DiskKernelspace", "kernelspace") |

794 |
]) |

795 |
$(THH.makeJSONInstance ''DiskAccessMode) |

796 | |

797 |
-- | Local disk status |

798 |
-- |

799 |
-- Python code depends on: |

800 |
-- DiskStatusOk < DiskStatusUnknown < DiskStatusFaulty |

801 |
$(THH.declareILADT "LocalDiskStatus" |

802 |
[ ("DiskStatusFaulty", 3) |

803 |
, ("DiskStatusOk", 1) |

804 |
, ("DiskStatusUnknown", 2) |

805 |
]) |

806 | |

807 |
localDiskStatusName :: LocalDiskStatus -> String |

808 |
localDiskStatusName DiskStatusFaulty = "faulty" |

809 |
localDiskStatusName DiskStatusOk = "ok" |

810 |
localDiskStatusName DiskStatusUnknown = "unknown" |

811 | |

812 |
-- | Replace disks type. |

813 |
$(THH.declareLADT ''String "ReplaceDisksMode" |

814 |
[ -- Replace disks on primary |

815 |
("ReplaceOnPrimary", "replace_on_primary") |

816 |
-- Replace disks on secondary |

817 |
, ("ReplaceOnSecondary", "replace_on_secondary") |

818 |
-- Change secondary node |

819 |
, ("ReplaceNewSecondary", "replace_new_secondary") |

820 |
, ("ReplaceAuto", "replace_auto") |

821 |
]) |

822 |
$(THH.makeJSONInstance ''ReplaceDisksMode) |

823 | |

824 |
-- | Basic timeouts for RPC calls. |

825 |
$(THH.declareILADT "RpcTimeout" |

826 |
[ ("Urgent", 60) -- 1 minute |

827 |
, ("Fast", 5 * 60) -- 5 minutes |

828 |
, ("Normal", 15 * 60) -- 15 minutes |

829 |
, ("Slow", 3600) -- 1 hour |

830 |
, ("FourHours", 4 * 3600) -- 4 hours |

831 |
, ("OneDay", 86400) -- 1 day |

832 |
]) |