root / htools / Ganeti / Objects.hs @ a957e150
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{-# LANGUAGE TemplateHaskell #-}
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{-| Implementation of the Ganeti config objects.
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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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Copyright (C) 2011, 2012 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.Objects |
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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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, NodeGroup(..) |
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, IpFamily(..) |
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, ipFamilyToVersion |
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, Cluster(..) |
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, ConfigData(..) |
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) where |
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import Data.Maybe |
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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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import qualified Ganeti.Constants as C |
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import Ganeti.HTools.JSON |
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import Ganeti.THH |
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-- * NIC definitions |
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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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$(buildParam "NIC" "nicp" |
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[ simpleField "mode" [t| NICMode |] |
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, simpleField "link" [t| String |] |
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]) |
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$(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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-- * Disk definitions |
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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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$(declareSADT "DiskType" |
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[ ("LD_LV", 'C.ldLv)
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, ("LD_DRBD8", 'C.ldDrbd8)
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, ("LD_FILE", 'C.ldFile)
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, ("LD_BLOCKDEV", 'C.ldBlockdev)
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, ("LD_RADOS", 'C.ldRbd)
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]) |
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$(makeJSONInstance ''DiskType) |
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-- | 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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-- | 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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-- | 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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-- | 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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-- | 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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-- | 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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-- | 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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-- | 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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-- | 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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-- | 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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$(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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-- * Hypervisor definitions |
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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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-- * Instance definitions |
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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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$(declareSADT "AdminState" |
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[ ("AdminOffline", 'C.adminstOffline)
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, ("AdminDown", 'C.adminstDown)
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, ("AdminUp", 'C.adminstUp)
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]) |
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$(makeJSONInstance ''AdminState) |
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$(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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$(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| String |] |
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-- , simpleField "hvparams" [t| [(String, String)] |] |
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, simpleField "beparams" [t| PartialBEParams |] |
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-- , simpleField "osparams" [t| [(String, String)] |] |
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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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-- * Node definitions |
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$(buildParam "ND" "ndp" $ |
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[ simpleField "oob_program" [t| String |] |
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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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-- * NodeGroup definitions |
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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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$(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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] |
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++ timeStampFields |
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++ uuidFields |
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++ serialFields) |
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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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-- | 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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|
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-- * Cluster definitions |
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$(buildObject "Cluster" "cluster" $ |
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[ simpleField "rsahostkeypub" [t| String |] |
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, simpleField "highest_used_port" [t| Int |] |
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, simpleField "tcpudp_port_pool" [t| [Int] |] |
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, simpleField "mac_prefix" [t| String |] |
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, simpleField "volume_group_name" [t| String |] |
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, simpleField "reserved_lvs" [t| [String] |] |
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, optionalField $ simpleField "drbd_usermode_helper" [t| String |] |
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-- , simpleField "default_bridge" [t| String |] |
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-- , simpleField "default_hypervisor" [t| String |] |
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, simpleField "master_node" [t| String |] |
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, simpleField "master_ip" [t| String |] |
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, simpleField "master_netdev" [t| String |] |
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, simpleField "master_netmask" [t| Int |] |
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, simpleField "use_external_mip_script" [t| Bool |] |
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, simpleField "cluster_name" [t| String |] |
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, simpleField "file_storage_dir" [t| String |] |
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, simpleField "shared_file_storage_dir" [t| String |] |
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, simpleField "enabled_hypervisors" [t| [String] |] |
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-- , simpleField "hvparams" [t| [(String, [(String, String)])] |] |
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-- , simpleField "os_hvp" [t| [(String, String)] |] |
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, simpleField "beparams" [t| Container FilledBEParams |] |
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, simpleField "osparams" [t| Container (Container String) |] |
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, simpleField "nicparams" [t| Container FilledNICParams |] |
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, simpleField "ndparams" [t| FilledNDParams |] |
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, simpleField "candidate_pool_size" [t| Int |] |
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, simpleField "modify_etc_hosts" [t| Bool |] |
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, simpleField "modify_ssh_setup" [t| Bool |] |
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, simpleField "maintain_node_health" [t| Bool |] |
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, simpleField "uid_pool" [t| [(Int, Int)] |] |
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, simpleField "default_iallocator" [t| String |] |
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, simpleField "hidden_os" [t| [String] |] |
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, simpleField "blacklisted_os" [t| [String] |] |
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, simpleField "primary_ip_family" [t| IpFamily |] |
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, simpleField "prealloc_wipe_disks" [t| Bool |] |
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] |
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++ serialFields |
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++ timeStampFields |
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++ uuidFields |
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++ tagsFields) |
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|
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-- * ConfigData definitions |
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|
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$(buildObject "ConfigData" "config" $ |
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-- timeStampFields ++ |
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[ simpleField "version" [t| Int |] |
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, simpleField "cluster" [t| Cluster |] |
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, simpleField "nodes" [t| Container Node |] |
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, simpleField "nodegroups" [t| Container NodeGroup |] |
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, simpleField "instances" [t| Container Instance |] |
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] |
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++ serialFields) |