root / htools / Ganeti / Objects.hs @ 04dd53a3
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{-# LANGUAGE TemplateHaskell #-} |
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|
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{-| Implementation of the Ganeti config objects. |
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|
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Some object fields are not implemented yet, and as such they are |
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commented out below. |
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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) 2011, 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.Objects |
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( HvParams |
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, OsParams |
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, NICMode(..) |
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, PartialNicParams(..) |
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, FilledNicParams(..) |
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, fillNicParams |
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, PartialNic(..) |
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, DiskMode(..) |
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, DiskType(..) |
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, DiskLogicalId(..) |
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, Disk(..) |
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, DiskTemplate(..) |
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, PartialBeParams(..) |
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, FilledBeParams(..) |
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, fillBeParams |
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, Hypervisor(..) |
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, AdminState(..) |
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, adminStateFromRaw |
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, Instance(..) |
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, toDictInstance |
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, PartialNDParams(..) |
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, FilledNDParams(..) |
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, fillNDParams |
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, Node(..) |
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, AllocPolicy(..) |
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, FilledISpecParams(..) |
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, PartialISpecParams(..) |
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, fillISpecParams |
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, FilledIPolicy(..) |
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, PartialIPolicy(..) |
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, fillIPolicy |
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, DiskParams |
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, NodeGroup(..) |
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, IpFamily(..) |
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, ipFamilyToVersion |
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, fillDict |
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, ClusterHvParams |
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, OsHvParams |
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, ClusterBeParams |
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, ClusterOsParams |
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, ClusterNicParams |
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, Cluster(..) |
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, ConfigData(..) |
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, TimeStampObject(..) |
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, UuidObject(..) |
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, SerialNoObject(..) |
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, TagsObject(..) |
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) where |
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|
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import Data.List (foldl') |
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import Data.Maybe |
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import qualified Data.Map as Map |
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import qualified Data.Set as Set |
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import Text.JSON (makeObj, showJSON, readJSON, JSON, JSValue(..)) |
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import qualified Text.JSON as J |
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|
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import qualified Ganeti.Constants as C |
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import Ganeti.HTools.JSON |
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|
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import Ganeti.THH |
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|
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-- * Generic definitions |
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|
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-- | Fills one map with keys from the other map, if not already |
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-- existing. Mirrors objects.py:FillDict. |
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fillDict :: (Ord k) => Map.Map k v -> Map.Map k v -> [k] -> Map.Map k v |
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fillDict defaults custom skip_keys = |
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let updated = Map.union custom defaults |
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in foldl' (flip Map.delete) updated skip_keys |
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|
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-- | The hypervisor parameter type. This is currently a simple map, |
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-- without type checking on key/value pairs. |
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type HvParams = Container JSValue |
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|
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-- | The OS parameters type. This is, and will remain, a string |
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-- container, since the keys are dynamically declared by the OSes, and |
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-- the values are always strings. |
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type OsParams = Container String |
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|
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-- | Class of objects that have timestamps. |
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class TimeStampObject a where |
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cTimeOf :: a -> Double |
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mTimeOf :: a -> Double |
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|
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-- | Class of objects that have an UUID. |
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class UuidObject a where |
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uuidOf :: a -> String |
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|
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-- | Class of object that have a serial number. |
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class SerialNoObject a where |
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serialOf :: a -> Int |
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|
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-- | Class of objects that have tags. |
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class TagsObject a where |
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tagsOf :: a -> Set.Set String |
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|
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-- * NIC definitions |
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|
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$(declareSADT "NICMode" |
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[ ("NMBridged", 'C.nicModeBridged) |
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, ("NMRouted", 'C.nicModeRouted) |
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]) |
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$(makeJSONInstance ''NICMode) |
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|
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$(buildParam "Nic" "nicp" |
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[ simpleField "mode" [t| NICMode |] |
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, simpleField "link" [t| String |] |
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]) |
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|
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$(buildObject "PartialNic" "nic" |
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[ simpleField "mac" [t| String |] |
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, optionalField $ simpleField "ip" [t| String |] |
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, simpleField "nicparams" [t| PartialNicParams |] |
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]) |
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|
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-- * Disk definitions |
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|
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$(declareSADT "DiskMode" |
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[ ("DiskRdOnly", 'C.diskRdonly) |
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, ("DiskRdWr", 'C.diskRdwr) |
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]) |
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$(makeJSONInstance ''DiskMode) |
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|
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$(declareSADT "DiskType" |
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[ ("LD_LV", 'C.ldLv) |
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, ("LD_DRBD8", 'C.ldDrbd8) |
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, ("LD_FILE", 'C.ldFile) |
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, ("LD_BLOCKDEV", 'C.ldBlockdev) |
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, ("LD_RADOS", 'C.ldRbd) |
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]) |
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$(makeJSONInstance ''DiskType) |
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|
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-- | The file driver type. |
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$(declareSADT "FileDriver" |
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[ ("FileLoop", 'C.fdLoop) |
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, ("FileBlktap", 'C.fdBlktap) |
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]) |
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$(makeJSONInstance ''FileDriver) |
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|
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-- | The persistent block driver type. Currently only one type is allowed. |
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$(declareSADT "BlockDriver" |
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[ ("BlockDrvManual", 'C.blockdevDriverManual) |
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]) |
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$(makeJSONInstance ''BlockDriver) |
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|
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-- | Constant for the dev_type key entry in the disk config. |
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devType :: String |
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devType = "dev_type" |
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|
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-- | The disk configuration type. This includes the disk type itself, |
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-- for a more complete consistency. Note that since in the Python |
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-- code-base there's no authoritative place where we document the |
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-- logical id, this is probably a good reference point. |
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data DiskLogicalId |
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= LIDPlain String String -- ^ Volume group, logical volume |
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| LIDDrbd8 String String Int Int Int String |
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-- ^ NodeA, NodeB, Port, MinorA, MinorB, Secret |
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| LIDFile FileDriver String -- ^ Driver, path |
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| LIDBlockDev BlockDriver String -- ^ Driver, path (must be under /dev) |
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| LIDRados String String -- ^ Unused, path |
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deriving (Read, Show, Eq) |
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|
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-- | Mapping from a logical id to a disk type. |
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lidDiskType :: DiskLogicalId -> DiskType |
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lidDiskType (LIDPlain {}) = LD_LV |
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lidDiskType (LIDDrbd8 {}) = LD_DRBD8 |
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lidDiskType (LIDFile {}) = LD_FILE |
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lidDiskType (LIDBlockDev {}) = LD_BLOCKDEV |
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lidDiskType (LIDRados {}) = LD_RADOS |
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|
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-- | Builds the extra disk_type field for a given logical id. |
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lidEncodeType :: DiskLogicalId -> [(String, JSValue)] |
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lidEncodeType v = [(devType, showJSON . lidDiskType $ v)] |
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|
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-- | Custom encoder for DiskLogicalId (logical id only). |
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encodeDLId :: DiskLogicalId -> JSValue |
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encodeDLId (LIDPlain vg lv) = JSArray [showJSON vg, showJSON lv] |
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encodeDLId (LIDDrbd8 nodeA nodeB port minorA minorB key) = |
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JSArray [ showJSON nodeA, showJSON nodeB, showJSON port |
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, showJSON minorA, showJSON minorB, showJSON key ] |
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encodeDLId (LIDRados pool name) = JSArray [showJSON pool, showJSON name] |
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encodeDLId (LIDFile driver name) = JSArray [showJSON driver, showJSON name] |
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encodeDLId (LIDBlockDev driver name) = JSArray [showJSON driver, showJSON name] |
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|
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-- | Custom encoder for DiskLogicalId, composing both the logical id |
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-- and the extra disk_type field. |
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encodeFullDLId :: DiskLogicalId -> (JSValue, [(String, JSValue)]) |
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encodeFullDLId v = (encodeDLId v, lidEncodeType v) |
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|
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-- | Custom decoder for DiskLogicalId. This is manual for now, since |
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-- we don't have yet automation for separate-key style fields. |
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decodeDLId :: [(String, JSValue)] -> JSValue -> J.Result DiskLogicalId |
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decodeDLId obj lid = do |
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dtype <- fromObj obj devType |
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case dtype of |
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LD_DRBD8 -> |
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case lid of |
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JSArray [nA, nB, p, mA, mB, k] -> do |
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nA' <- readJSON nA |
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nB' <- readJSON nB |
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p' <- readJSON p |
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mA' <- readJSON mA |
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mB' <- readJSON mB |
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k' <- readJSON k |
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return $ LIDDrbd8 nA' nB' p' mA' mB' k' |
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_ -> fail $ "Can't read logical_id for DRBD8 type" |
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LD_LV -> |
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case lid of |
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JSArray [vg, lv] -> do |
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vg' <- readJSON vg |
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lv' <- readJSON lv |
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return $ LIDPlain vg' lv' |
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_ -> fail $ "Can't read logical_id for plain type" |
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LD_FILE -> |
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case lid of |
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JSArray [driver, path] -> do |
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driver' <- readJSON driver |
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path' <- readJSON path |
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return $ LIDFile driver' path' |
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_ -> fail $ "Can't read logical_id for file type" |
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LD_BLOCKDEV -> |
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case lid of |
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JSArray [driver, path] -> do |
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driver' <- readJSON driver |
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path' <- readJSON path |
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return $ LIDBlockDev driver' path' |
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_ -> fail $ "Can't read logical_id for blockdev type" |
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LD_RADOS -> |
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case lid of |
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JSArray [driver, path] -> do |
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driver' <- readJSON driver |
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path' <- readJSON path |
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return $ LIDRados driver' path' |
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_ -> fail $ "Can't read logical_id for rdb type" |
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|
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-- | Disk data structure. |
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-- |
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-- This is declared manually as it's a recursive structure, and our TH |
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-- code currently can't build it. |
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data Disk = Disk |
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{ diskLogicalId :: DiskLogicalId |
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-- , diskPhysicalId :: String |
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, diskChildren :: [Disk] |
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, diskIvName :: String |
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, diskSize :: Int |
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, diskMode :: DiskMode |
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} deriving (Read, Show, Eq) |
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|
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$(buildObjectSerialisation "Disk" |
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[ customField 'decodeDLId 'encodeFullDLId $ |
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simpleField "logical_id" [t| DiskLogicalId |] |
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-- , simpleField "physical_id" [t| String |] |
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, defaultField [| [] |] $ simpleField "children" [t| [Disk] |] |
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, defaultField [| "" |] $ simpleField "iv_name" [t| String |] |
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, simpleField "size" [t| Int |] |
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, defaultField [| DiskRdWr |] $ simpleField "mode" [t| DiskMode |] |
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]) |
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|
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-- * Hypervisor definitions |
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|
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-- | This may be due to change when we add hypervisor parameters. |
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$(declareSADT "Hypervisor" |
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[ ( "Kvm", 'C.htKvm ) |
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, ( "XenPvm", 'C.htXenPvm ) |
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, ( "Chroot", 'C.htChroot ) |
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, ( "XenHvm", 'C.htXenHvm ) |
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, ( "Lxc", 'C.htLxc ) |
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, ( "Fake", 'C.htFake ) |
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]) |
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$(makeJSONInstance ''Hypervisor) |
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|
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-- * Instance definitions |
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|
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-- | Instance disk template type. **Copied from HTools/Types.hs** |
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$(declareSADT "DiskTemplate" |
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[ ("DTDiskless", 'C.dtDiskless) |
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, ("DTFile", 'C.dtFile) |
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, ("DTSharedFile", 'C.dtSharedFile) |
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, ("DTPlain", 'C.dtPlain) |
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, ("DTBlock", 'C.dtBlock) |
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, ("DTDrbd8", 'C.dtDrbd8) |
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, ("DTRados", 'C.dtRbd) |
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]) |
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$(makeJSONInstance ''DiskTemplate) |
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|
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$(declareSADT "AdminState" |
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[ ("AdminOffline", 'C.adminstOffline) |
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, ("AdminDown", 'C.adminstDown) |
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, ("AdminUp", 'C.adminstUp) |
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]) |
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$(makeJSONInstance ''AdminState) |
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|
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$(buildParam "Be" "bep" $ |
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[ simpleField "minmem" [t| Int |] |
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, simpleField "maxmem" [t| Int |] |
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, simpleField "vcpus" [t| Int |] |
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, simpleField "auto_balance" [t| Bool |] |
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]) |
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|
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$(buildObject "Instance" "inst" $ |
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[ simpleField "name" [t| String |] |
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, simpleField "primary_node" [t| String |] |
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, simpleField "os" [t| String |] |
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, simpleField "hypervisor" [t| Hypervisor |] |
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, simpleField "hvparams" [t| HvParams |] |
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, simpleField "beparams" [t| PartialBeParams |] |
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, simpleField "osparams" [t| OsParams |] |
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, simpleField "admin_state" [t| AdminState |] |
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, simpleField "nics" [t| [PartialNic] |] |
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, simpleField "disks" [t| [Disk] |] |
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, simpleField "disk_template" [t| DiskTemplate |] |
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, optionalField $ simpleField "network_port" [t| Int |] |
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] |
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++ timeStampFields |
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++ uuidFields |
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++ serialFields |
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++ tagsFields) |
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|
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instance TimeStampObject Instance where |
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cTimeOf = instCtime |
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mTimeOf = instMtime |
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|
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instance UuidObject Instance where |
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uuidOf = instUuid |
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|
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instance SerialNoObject Instance where |
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serialOf = instSerial |
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|
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instance TagsObject Instance where |
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tagsOf = instTags |
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|
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-- * IPolicy definitions |
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|
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$(buildParam "ISpec" "ispec" $ |
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[ simpleField C.ispecMemSize [t| Int |] |
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, simpleField C.ispecDiskSize [t| Int |] |
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, simpleField C.ispecDiskCount [t| Int |] |
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, simpleField C.ispecCpuCount [t| Int |] |
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, simpleField C.ispecSpindleUse [t| Int |] |
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]) |
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|
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-- | Custom partial ipolicy. This is not built via buildParam since it |
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-- has a special 2-level inheritance mode. |
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$(buildObject "PartialIPolicy" "ipolicy" $ |
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[ renameField "MinSpecP" $ simpleField "min" [t| PartialISpecParams |] |
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, renameField "MaxSpecP" $ simpleField "max" [t| PartialISpecParams |] |
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, renameField "StdSpecP" $ simpleField "std" [t| PartialISpecParams |] |
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, optionalField . renameField "SpindleRatioP" |
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$ simpleField "spindle-ratio" [t| Double |] |
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, optionalField . renameField "VcpuRatioP" |
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$ simpleField "vcpu-ratio" [t| Double |] |
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, optionalField . renameField "DiskTemplatesP" |
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$ simpleField "disk-templates" [t| [DiskTemplate] |] |
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]) |
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|
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-- | Custom filled ipolicy. This is not built via buildParam since it |
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-- has a special 2-level inheritance mode. |
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$(buildObject "FilledIPolicy" "ipolicy" $ |
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[ renameField "MinSpec" $ simpleField "min" [t| FilledISpecParams |] |
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, renameField "MaxSpec" $ simpleField "max" [t| FilledISpecParams |] |
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, renameField "StdSpec" $ simpleField "std" [t| FilledISpecParams |] |
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, simpleField "spindle-ratio" [t| Double |] |
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, simpleField "vcpu-ratio" [t| Double |] |
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, simpleField "disk-templates" [t| [DiskTemplate] |] |
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]) |
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|
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-- | Custom filler for the ipolicy types. |
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fillIPolicy :: FilledIPolicy -> PartialIPolicy -> FilledIPolicy |
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fillIPolicy (FilledIPolicy { ipolicyMinSpec = fmin |
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, ipolicyMaxSpec = fmax |
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, ipolicyStdSpec = fstd |
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, ipolicySpindleRatio = fspindleRatio |
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, ipolicyVcpuRatio = fvcpuRatio |
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, ipolicyDiskTemplates = fdiskTemplates}) |
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(PartialIPolicy { ipolicyMinSpecP = pmin |
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, ipolicyMaxSpecP = pmax |
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, ipolicyStdSpecP = pstd |
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, ipolicySpindleRatioP = pspindleRatio |
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, ipolicyVcpuRatioP = pvcpuRatio |
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, ipolicyDiskTemplatesP = pdiskTemplates}) = |
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FilledIPolicy { ipolicyMinSpec = fillISpecParams fmin pmin |
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, ipolicyMaxSpec = fillISpecParams fmax pmax |
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, ipolicyStdSpec = fillISpecParams fstd pstd |
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, ipolicySpindleRatio = fromMaybe fspindleRatio pspindleRatio |
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, ipolicyVcpuRatio = fromMaybe fvcpuRatio pvcpuRatio |
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, ipolicyDiskTemplates = fromMaybe fdiskTemplates |
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pdiskTemplates |
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} |
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-- * Node definitions |
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|
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$(buildParam "ND" "ndp" $ |
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[ simpleField "oob_program" [t| String |] |
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, simpleField "spindle_count" [t| Int |] |
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]) |
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|
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$(buildObject "Node" "node" $ |
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[ simpleField "name" [t| String |] |
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, simpleField "primary_ip" [t| String |] |
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, simpleField "secondary_ip" [t| String |] |
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, simpleField "master_candidate" [t| Bool |] |
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, simpleField "offline" [t| Bool |] |
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, simpleField "drained" [t| Bool |] |
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, simpleField "group" [t| String |] |
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, simpleField "master_capable" [t| Bool |] |
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, simpleField "vm_capable" [t| Bool |] |
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, simpleField "ndparams" [t| PartialNDParams |] |
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, simpleField "powered" [t| Bool |] |
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] |
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++ timeStampFields |
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++ uuidFields |
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++ serialFields |
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++ tagsFields) |
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|
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instance TimeStampObject Node where |
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cTimeOf = nodeCtime |
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mTimeOf = nodeMtime |
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|
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instance UuidObject Node where |
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uuidOf = nodeUuid |
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|
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instance SerialNoObject Node where |
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serialOf = nodeSerial |
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|
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instance TagsObject Node where |
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tagsOf = nodeTags |
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|
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-- * NodeGroup definitions |
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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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-- |
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-- FIXME: COPIED from Types.hs; we need to eliminate this duplication later |
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$(declareSADT "AllocPolicy" |
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[ ("AllocPreferred", 'C.allocPolicyPreferred) |
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, ("AllocLastResort", 'C.allocPolicyLastResort) |
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, ("AllocUnallocable", 'C.allocPolicyUnallocable) |
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]) |
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$(makeJSONInstance ''AllocPolicy) |
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|
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-- | The disk parameters type. |
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type DiskParams = Container (Container JSValue) |
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|
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$(buildObject "NodeGroup" "group" $ |
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[ simpleField "name" [t| String |] |
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, defaultField [| [] |] $ simpleField "members" [t| [String] |] |
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, simpleField "ndparams" [t| PartialNDParams |] |
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, simpleField "alloc_policy" [t| AllocPolicy |] |
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, simpleField "ipolicy" [t| PartialIPolicy |] |
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, simpleField "diskparams" [t| DiskParams |] |
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] |
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++ timeStampFields |
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++ uuidFields |
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++ serialFields |
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++ tagsFields) |
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|
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instance TimeStampObject NodeGroup where |
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cTimeOf = groupCtime |
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mTimeOf = groupMtime |
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|
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instance UuidObject NodeGroup where |
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uuidOf = groupUuid |
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|
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instance SerialNoObject NodeGroup where |
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serialOf = groupSerial |
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|
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instance TagsObject NodeGroup where |
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tagsOf = groupTags |
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|
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-- | IP family type |
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$(declareIADT "IpFamily" |
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[ ("IpFamilyV4", 'C.ip4Family) |
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, ("IpFamilyV6", 'C.ip6Family) |
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]) |
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$(makeJSONInstance ''IpFamily) |
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|
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-- | Conversion from IP family to IP version. This is needed because |
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-- Python uses both, depending on context. |
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ipFamilyToVersion :: IpFamily -> Int |
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ipFamilyToVersion IpFamilyV4 = C.ip4Version |
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ipFamilyToVersion IpFamilyV6 = C.ip6Version |
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|
517 |
-- | Cluster HvParams (hvtype to hvparams mapping). |
518 |
type ClusterHvParams = Container HvParams |
519 |
|
520 |
-- | Cluster Os-HvParams (os to hvparams mapping). |
521 |
type OsHvParams = Container ClusterHvParams |
522 |
|
523 |
-- | Cluser BeParams. |
524 |
type ClusterBeParams = Container FilledBeParams |
525 |
|
526 |
-- | Cluster OsParams. |
527 |
type ClusterOsParams = Container OsParams |
528 |
|
529 |
-- | Cluster NicParams. |
530 |
type ClusterNicParams = Container FilledNicParams |
531 |
|
532 |
-- | Cluster UID Pool, list (low, high) UID ranges. |
533 |
type UidPool = [(Int, Int)] |
534 |
|
535 |
-- * Cluster definitions |
536 |
$(buildObject "Cluster" "cluster" $ |
537 |
[ simpleField "rsahostkeypub" [t| String |] |
538 |
, simpleField "highest_used_port" [t| Int |] |
539 |
, simpleField "tcpudp_port_pool" [t| [Int] |] |
540 |
, simpleField "mac_prefix" [t| String |] |
541 |
, simpleField "volume_group_name" [t| String |] |
542 |
, simpleField "reserved_lvs" [t| [String] |] |
543 |
, optionalField $ |
544 |
simpleField "drbd_usermode_helper" [t| String |] |
545 |
, simpleField "master_node" [t| String |] |
546 |
, simpleField "master_ip" [t| String |] |
547 |
, simpleField "master_netdev" [t| String |] |
548 |
, simpleField "master_netmask" [t| Int |] |
549 |
, simpleField "use_external_mip_script" [t| Bool |] |
550 |
, simpleField "cluster_name" [t| String |] |
551 |
, simpleField "file_storage_dir" [t| String |] |
552 |
, simpleField "shared_file_storage_dir" [t| String |] |
553 |
, simpleField "enabled_hypervisors" [t| [String] |] |
554 |
, simpleField "hvparams" [t| ClusterHvParams |] |
555 |
, simpleField "os_hvp" [t| OsHvParams |] |
556 |
, simpleField "beparams" [t| ClusterBeParams |] |
557 |
, simpleField "osparams" [t| ClusterOsParams |] |
558 |
, simpleField "nicparams" [t| ClusterNicParams |] |
559 |
, simpleField "ndparams" [t| FilledNDParams |] |
560 |
, simpleField "diskparams" [t| DiskParams |] |
561 |
, simpleField "candidate_pool_size" [t| Int |] |
562 |
, simpleField "modify_etc_hosts" [t| Bool |] |
563 |
, simpleField "modify_ssh_setup" [t| Bool |] |
564 |
, simpleField "maintain_node_health" [t| Bool |] |
565 |
, simpleField "uid_pool" [t| UidPool |] |
566 |
, simpleField "default_iallocator" [t| String |] |
567 |
, simpleField "hidden_os" [t| [String] |] |
568 |
, simpleField "blacklisted_os" [t| [String] |] |
569 |
, simpleField "primary_ip_family" [t| IpFamily |] |
570 |
, simpleField "prealloc_wipe_disks" [t| Bool |] |
571 |
, simpleField "ipolicy" [t| FilledIPolicy |] |
572 |
] |
573 |
++ timeStampFields |
574 |
++ uuidFields |
575 |
++ serialFields |
576 |
++ tagsFields) |
577 |
|
578 |
instance TimeStampObject Cluster where |
579 |
cTimeOf = clusterCtime |
580 |
mTimeOf = clusterMtime |
581 |
|
582 |
instance UuidObject Cluster where |
583 |
uuidOf = clusterUuid |
584 |
|
585 |
instance SerialNoObject Cluster where |
586 |
serialOf = clusterSerial |
587 |
|
588 |
instance TagsObject Cluster where |
589 |
tagsOf = clusterTags |
590 |
|
591 |
-- * ConfigData definitions |
592 |
|
593 |
$(buildObject "ConfigData" "config" $ |
594 |
-- timeStampFields ++ |
595 |
[ simpleField "version" [t| Int |] |
596 |
, simpleField "cluster" [t| Cluster |] |
597 |
, simpleField "nodes" [t| Container Node |] |
598 |
, simpleField "nodegroups" [t| Container NodeGroup |] |
599 |
, simpleField "instances" [t| Container Instance |] |
600 |
] |
601 |
++ serialFields) |
602 |
|
603 |
instance SerialNoObject ConfigData where |
604 |
serialOf = configSerial |