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{-# LANGUAGE TemplateHaskell #-}

{-| Implementation of the opcodes.

-}

{-

Copyright (C) 2009, 2010, 2011, 2012, 2013 Google Inc.

This program is free software; you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation; either version 2 of the License, or

(at your option) any later version.

This program is distributed in the hope that it will be useful, but

WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

General Public License for more details.

You should have received a copy of the GNU General Public License

along with this program; if not, write to the Free Software

Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

02110-1301, USA.

-}

module Ganeti.OpCodes

  ( OpCode(..)

  , TagObject(..)

  , tagObjectFrom

  , encodeTagObject

  , decodeTagObject

  , ReplaceDisksMode(..)

  , DiskIndex

  , mkDiskIndex

  , unDiskIndex

  , opID

  , allOpIDs

  , allOpFields

  , opSummary

  , CommonOpParams(..)

  , defOpParams

  , MetaOpCode(..)

  , wrapOpCode

  , setOpComment

  , setOpPriority

  ) where

import Data.Maybe (fromMaybe)

import Text.JSON (readJSON, JSON, JSValue, makeObj)

import qualified Text.JSON

import Ganeti.THH

import Ganeti.OpParams

import Ganeti.Types (OpSubmitPriority(..), fromNonEmpty)

import Ganeti.Query.Language (queryTypeOpToRaw)

-- | OpCode representation.

--

-- We only implement a subset of Ganeti opcodes: those which are actually used

-- in the htools codebase.

$(genOpCode "OpCode"

  [ ("OpTestDelay",

     [ pDelayDuration

     , pDelayOnMaster

     , pDelayOnNodes

     , pDelayRepeat

     ])

  , ("OpInstanceReplaceDisks",

     [ pInstanceName

     , pEarlyRelease

     , pIgnoreIpolicy

     , pReplaceDisksMode

     , pReplaceDisksList

     , pRemoteNode

     , pIallocator

     ])

  , ("OpInstanceFailover",

     [ pInstanceName

     , pShutdownTimeout

     , pIgnoreConsistency

     , pMigrationTargetNode

     , pIgnoreIpolicy

     , pIallocator

     , pMigrationCleanup

     ])

  , ("OpInstanceMigrate",

     [ pInstanceName

     , pMigrationMode

     , pMigrationLive

     , pMigrationTargetNode

     , pAllowRuntimeChgs

     , pIgnoreIpolicy

     , pMigrationCleanup

     , pIallocator

     , pAllowFailover

     ])

  , ("OpTagsGet",

     [ pTagsObject

     , pUseLocking

     ])

  , ("OpTagsSearch",

     [ pTagSearchPattern ])

  , ("OpTagsSet",

     [ pTagsObject

     , pTagsList

     ])

  , ("OpTagsDel",

     [ pTagsObject

     , pTagsList

     ])

  , ("OpClusterPostInit", [])

  , ("OpClusterDestroy", [])

  , ("OpClusterQuery", [])

  , ("OpClusterVerify",

     [ pDebugSimulateErrors

     , pErrorCodes

     , pSkipChecks

     , pIgnoreErrors

     , pVerbose

     , pOptGroupName

     ])

  , ("OpClusterVerifyConfig",

     [ pDebugSimulateErrors

     , pErrorCodes

     , pIgnoreErrors

     , pVerbose

     ])

  , ("OpClusterVerifyGroup",

     [ pGroupName

     , pDebugSimulateErrors

     , pErrorCodes

     , pSkipChecks

     , pIgnoreErrors

     , pVerbose

     ])

  , ("OpClusterVerifyDisks", [])

  , ("OpGroupVerifyDisks",

     [ pGroupName

     ])

  , ("OpClusterRepairDiskSizes",

     [ pInstances

     ])

  , ("OpClusterConfigQuery",

     [ pOutputFields

     ])

  , ("OpClusterRename",

     [ pName

     ])

  , ("OpClusterSetParams",

     [ pForce

     , pHvState

     , pDiskState

     , pVgName

     , pEnabledHypervisors

     , pClusterHvParams

     , pClusterBeParams

     , pOsHvp

     , pClusterOsParams

     , pDiskParams

     , pCandidatePoolSize

     , pUidPool

     , pAddUids

     , pRemoveUids

     , pMaintainNodeHealth

     , pPreallocWipeDisks

     , pNicParams

     , pNdParams

     , pIpolicy

     , pDrbdHelper

     , pDefaultIAllocator

     , pMasterNetdev

     , pMasterNetmask

     , pReservedLvs

     , pHiddenOs

     , pBlacklistedOs

     , pUseExternalMipScript

     , pEnabledDiskTemplates

     , pModifyEtcHosts

     ])

  , ("OpClusterRedistConf", [])

  , ("OpClusterActivateMasterIp", [])

  , ("OpClusterDeactivateMasterIp", [])

  , ("OpQuery",

     [ pQueryWhat

     , pUseLocking

     , pQueryFields

     , pQueryFilter

     ])

  , ("OpQueryFields",

     [ pQueryWhat

     , pQueryFields

     ])

  , ("OpOobCommand",

     [ pNodeNames

     , pOobCommand

     , pOobTimeout

     , pIgnoreStatus

     , pPowerDelay

     ])

  , ("OpNodeRemove", [ pNodeName ])

  , ("OpNodeAdd",

     [ pNodeName

     , pHvState

     , pDiskState

     , pPrimaryIp

     , pSecondaryIp

     , pReadd

     , pNodeGroup

     , pMasterCapable

     , pVmCapable

     , pNdParams

    ])

  , ("OpNodeQuery", dOldQuery)

  , ("OpNodeQueryvols",

     [ pOutputFields

     , pNodes

     ])

  , ("OpNodeQueryStorage",

     [ pOutputFields

     , pStorageType

     , pNodes

     , pStorageName

     ])

  , ("OpNodeModifyStorage",

     [ pNodeName

     , pStorageType

     , pStorageName

     , pStorageChanges

     ])

  , ("OpRepairNodeStorage",

     [ pNodeName

     , pStorageType

     , pStorageName

     , pIgnoreConsistency

     ])

  , ("OpNodeSetParams",

     [ pNodeName

     , pForce

     , pHvState

     , pDiskState

     , pMasterCandidate

     , pOffline

     , pDrained

     , pAutoPromote

     , pMasterCapable

     , pVmCapable

     , pSecondaryIp

     , pNdParams

     , pPowered

     ])

  , ("OpNodePowercycle",

     [ pNodeName

     , pForce

     ])

  , ("OpNodeMigrate",

     [ pNodeName

     , pMigrationMode

     , pMigrationLive

     , pMigrationTargetNode

     , pAllowRuntimeChgs

     , pIgnoreIpolicy

     , pIallocator

     ])

  , ("OpNodeEvacuate",

     [ pEarlyRelease

     , pNodeName

     , pRemoteNode

     , pIallocator

     , pEvacMode

     ])

  , ("OpInstanceCreate",

     [ pInstanceName

     , pForceVariant

     , pWaitForSync

     , pNameCheck

     , pIgnoreIpolicy

     , pInstBeParams

     , pInstDisks

     , pDiskTemplate

     , pFileDriver

     , pFileStorageDir

     , pInstHvParams

     , pHypervisor

     , pIallocator

     , pResetDefaults

     , pIpCheck

     , pIpConflictsCheck

     , pInstCreateMode

     , pInstNics

     , pNoInstall

     , pInstOsParams

     , pInstOs

     , pPrimaryNode

     , pSecondaryNode

     , pSourceHandshake

     , pSourceInstance

     , pSourceShutdownTimeout

     , pSourceX509Ca

     , pSrcNode

     , pSrcPath

     , pStartInstance

     , pOpportunisticLocking

     , pInstTags

     ])

  , ("OpInstanceMultiAlloc",

     [ pIallocator

     , pMultiAllocInstances

     , pOpportunisticLocking

     ])

  , ("OpInstanceReinstall",

     [ pInstanceName

     , pForceVariant

     , pInstOs

     , pTempOsParams

     ])

  , ("OpInstanceRemove",

     [ pInstanceName

     , pShutdownTimeout

     , pIgnoreFailures

     ])

  , ("OpInstanceRename",

     [ pInstanceName

     , pNewName

     , pNameCheck

     , pIpCheck

     ])

  , ("OpInstanceStartup",

     [ pInstanceName

     , pForce

     , pIgnoreOfflineNodes

     , pTempHvParams

     , pTempBeParams

     , pNoRemember

     , pStartupPaused

     ])

  , ("OpInstanceShutdown",

     [ pInstanceName

     , pForce

     , pIgnoreOfflineNodes

     , pShutdownTimeout'

     , pNoRemember

     ])

  , ("OpInstanceReboot",

     [ pInstanceName

     , pShutdownTimeout

     , pIgnoreSecondaries

     , pRebootType

     ])

  , ("OpInstanceMove",

     [ pInstanceName

     , pShutdownTimeout

     , pIgnoreIpolicy

     , pMoveTargetNode

     , pIgnoreConsistency

     ])

  , ("OpInstanceConsole",

     [ pInstanceName ])

  , ("OpInstanceActivateDisks",

     [ pInstanceName

     , pIgnoreDiskSize

     , pWaitForSyncFalse

     ])

  , ("OpInstanceDeactivateDisks",

     [ pInstanceName

     , pForce

     ])

  , ("OpInstanceRecreateDisks",

     [ pInstanceName

     , pRecreateDisksInfo

     , pNodes

     , pIallocator

     ])

  , ("OpInstanceQuery", dOldQuery)

  , ("OpInstanceQueryData",

     [ pUseLocking

     , pInstances

     , pStatic

     ])

  , ("OpInstanceSetParams",

     [ pInstanceName

     , pForce

     , pForceVariant

     , pIgnoreIpolicy

     , pInstParamsNicChanges

     , pInstParamsDiskChanges

     , pInstBeParams

     , pRuntimeMem

     , pInstHvParams

     , pOptDiskTemplate

     , pPrimaryNode

     , pRemoteNode

     , pOsNameChange

     , pInstOsParams

     , pWaitForSync

     , pOffline

     , pIpConflictsCheck

     , pHotplug

     , pHotplugIfPossible

     ])

  , ("OpInstanceGrowDisk",

     [ pInstanceName

     , pWaitForSync

     , pDiskIndex

     , pDiskChgAmount

     , pDiskChgAbsolute

     ])

  , ("OpInstanceChangeGroup",

     [ pInstanceName

     , pEarlyRelease

     , pIallocator

     , pTargetGroups

     ])

  , ("OpGroupAdd",

     [ pGroupName

     , pNodeGroupAllocPolicy

     , pGroupNodeParams

     , pDiskParams

     , pHvState

     , pDiskState

     , pIpolicy

     ])

  , ("OpGroupAssignNodes",

     [ pGroupName

     , pForce

     , pRequiredNodes

     ])

  , ("OpGroupQuery", dOldQueryNoLocking)

  , ("OpGroupSetParams",

     [ pGroupName

     , pNodeGroupAllocPolicy

     , pGroupNodeParams

     , pDiskParams

     , pHvState

     , pDiskState

     , pIpolicy

     ])

  , ("OpGroupRemove",

     [ pGroupName ])

  , ("OpGroupRename",

     [ pGroupName

     , pNewName

     ])

  , ("OpGroupEvacuate",

     [ pGroupName

     , pEarlyRelease

     , pIallocator

     , pTargetGroups

     ])

  , ("OpOsDiagnose",

     [ pOutputFields

     , pNames ])

  , ("OpExtStorageDiagnose",

     [ pOutputFields

     , pNames ])

  , ("OpBackupQuery",

     [ pUseLocking

     , pNodes

     ])

  , ("OpBackupPrepare",

     [ pInstanceName

     , pExportMode

     ])

  , ("OpBackupExport",

     [ pInstanceName

     , pShutdownTimeout

     , pExportTargetNode

     , pShutdownInstance

     , pRemoveInstance

     , pIgnoreRemoveFailures

     , pExportMode

     , pX509KeyName

     , pX509DestCA

     ])

  , ("OpBackupRemove",

     [ pInstanceName ])

  , ("OpTestAllocator",

     [ pIAllocatorDirection

     , pIAllocatorMode

     , pIAllocatorReqName

     , pIAllocatorNics

     , pIAllocatorDisks

     , pHypervisor

     , pIallocator

     , pInstTags

     , pIAllocatorMemory

     , pIAllocatorVCpus

     , pIAllocatorOs

     , pDiskTemplate

     , pIAllocatorInstances

     , pIAllocatorEvacMode

     , pTargetGroups

     , pIAllocatorSpindleUse

     , pIAllocatorCount

     ])

  , ("OpTestJqueue",

     [ pJQueueNotifyWaitLock

     , pJQueueNotifyExec

     , pJQueueLogMessages

     , pJQueueFail

     ])

  , ("OpTestDummy",

     [ pTestDummyResult

     , pTestDummyMessages

     , pTestDummyFail

     , pTestDummySubmitJobs

     ])

  , ("OpNetworkAdd",

     [ pNetworkName

     , pNetworkAddress4

     , pNetworkGateway4

     , pNetworkAddress6

     , pNetworkGateway6

     , pNetworkMacPrefix

     , pNetworkAddRsvdIps

     , pIpConflictsCheck

     , pInstTags

     ])

  , ("OpNetworkRemove",

     [ pNetworkName

     , pForce

     ])

  , ("OpNetworkSetParams",

     [ pNetworkName

     , pNetworkGateway4

     , pNetworkAddress6

     , pNetworkGateway6

     , pNetworkMacPrefix

     , pNetworkAddRsvdIps

     , pNetworkRemoveRsvdIps

     ])

  , ("OpNetworkConnect",

     [ pGroupName

     , pNetworkName

     , pNetworkMode

     , pNetworkLink

     , pIpConflictsCheck

     ])

  , ("OpNetworkDisconnect",

     [ pGroupName

     , pNetworkName

     ])

  , ("OpNetworkQuery", dOldQuery)

  , ("OpRestrictedCommand",

     [ pUseLocking

     , pRequiredNodes

     , pRestrictedCommand

     ])

  ])

-- | Returns the OP_ID for a given opcode value.

$(genOpID ''OpCode "opID")

-- | A list of all defined/supported opcode IDs.

$(genAllOpIDs ''OpCode "allOpIDs")

instance JSON OpCode where

  readJSON = loadOpCode

  showJSON = saveOpCode

-- | Generates the summary value for an opcode.

opSummaryVal :: OpCode -> Maybe String

opSummaryVal OpClusterVerifyGroup { opGroupName = s } = Just (fromNonEmpty s)

opSummaryVal OpGroupVerifyDisks { opGroupName = s } = Just (fromNonEmpty s)

opSummaryVal OpClusterRename { opName = s } = Just (fromNonEmpty s)

opSummaryVal OpQuery { opWhat = s } = Just (queryTypeOpToRaw s)

opSummaryVal OpQueryFields { opWhat = s } = Just (queryTypeOpToRaw s)

opSummaryVal OpNodeRemove { opNodeName = s } = Just (fromNonEmpty s)

opSummaryVal OpNodeAdd { opNodeName = s } = Just (fromNonEmpty s)

opSummaryVal OpNodeModifyStorage { opNodeName = s } = Just (fromNonEmpty s)

opSummaryVal OpRepairNodeStorage  { opNodeName = s } = Just (fromNonEmpty s)

opSummaryVal OpNodeSetParams { opNodeName = s } = Just (fromNonEmpty s)

opSummaryVal OpNodePowercycle { opNodeName = s } = Just (fromNonEmpty s)

opSummaryVal OpNodeMigrate { opNodeName = s } = Just (fromNonEmpty s)

opSummaryVal OpNodeEvacuate { opNodeName = s } = Just (fromNonEmpty s)

opSummaryVal OpInstanceCreate { opInstanceName = s } = Just s

opSummaryVal OpInstanceReinstall { opInstanceName = s } = Just s

opSummaryVal OpInstanceRemove { opInstanceName = s } = Just s

-- FIXME: instance rename should show both names; currently it shows none

-- opSummaryVal OpInstanceRename { opInstanceName = s } = Just s

opSummaryVal OpInstanceStartup { opInstanceName = s } = Just s

opSummaryVal OpInstanceShutdown { opInstanceName = s } = Just s

opSummaryVal OpInstanceReboot { opInstanceName = s } = Just s

opSummaryVal OpInstanceReplaceDisks { opInstanceName = s } = Just s

opSummaryVal OpInstanceFailover { opInstanceName = s } = Just s

opSummaryVal OpInstanceMigrate { opInstanceName = s } = Just s

opSummaryVal OpInstanceMove { opInstanceName = s } = Just s

opSummaryVal OpInstanceConsole { opInstanceName = s } = Just s

opSummaryVal OpInstanceActivateDisks { opInstanceName = s } = Just s

opSummaryVal OpInstanceDeactivateDisks { opInstanceName = s } = Just s

opSummaryVal OpInstanceRecreateDisks { opInstanceName = s } = Just s

opSummaryVal OpInstanceSetParams { opInstanceName = s } = Just s

opSummaryVal OpInstanceGrowDisk { opInstanceName = s } = Just s

opSummaryVal OpInstanceChangeGroup { opInstanceName = s } = Just s

opSummaryVal OpGroupAdd { opGroupName = s } = Just (fromNonEmpty s)

opSummaryVal OpGroupAssignNodes { opGroupName = s } = Just (fromNonEmpty s)

opSummaryVal OpGroupSetParams { opGroupName = s } = Just (fromNonEmpty s)

opSummaryVal OpGroupRemove { opGroupName = s } = Just (fromNonEmpty s)

opSummaryVal OpGroupEvacuate { opGroupName = s } = Just (fromNonEmpty s)

opSummaryVal OpBackupPrepare { opInstanceName = s } = Just s

opSummaryVal OpBackupExport { opInstanceName = s } = Just s

opSummaryVal OpBackupRemove { opInstanceName = s } = Just s

opSummaryVal OpTagsGet { opKind = k } =

  Just . fromMaybe "None" $ tagNameOf k

opSummaryVal OpTagsSearch { opTagSearchPattern = s } = Just (fromNonEmpty s)

opSummaryVal OpTestDelay { opDelayDuration = d } = Just (show d)

opSummaryVal OpTestAllocator { opIallocator = s } =

  -- FIXME: Python doesn't handle None fields well, so we have behave the same

  Just $ maybe "None" fromNonEmpty s

opSummaryVal OpNetworkAdd { opNetworkName = s} = Just (fromNonEmpty s)

opSummaryVal OpNetworkRemove { opNetworkName = s} = Just (fromNonEmpty s)

opSummaryVal OpNetworkSetParams { opNetworkName = s} = Just (fromNonEmpty s)

opSummaryVal OpNetworkConnect { opNetworkName = s} = Just (fromNonEmpty s)

opSummaryVal OpNetworkDisconnect { opNetworkName = s} = Just (fromNonEmpty s)

opSummaryVal _ = Nothing

-- | Computes the summary of the opcode.

opSummary :: OpCode -> String

opSummary op =

  case opSummaryVal op of

    Nothing -> op_suffix

    Just s -> op_suffix ++ "(" ++ s ++ ")"

  where op_suffix = drop 3 $ opID op

-- | Generic\/common opcode parameters.

$(buildObject "CommonOpParams" "op"

  [ pDryRun

  , pDebugLevel

  , pOpPriority

  , pDependencies

  , pComment

  , pReason

  ])

-- | Default common parameter values.

defOpParams :: CommonOpParams

defOpParams =

  CommonOpParams { opDryRun     = Nothing

                 , opDebugLevel = Nothing

                 , opPriority   = OpPrioNormal

                 , opDepends    = Nothing

                 , opComment    = Nothing

                 , opReason     = []

                 }

-- | The top-level opcode type.

data MetaOpCode = MetaOpCode { metaParams :: CommonOpParams

                             , metaOpCode :: OpCode

                             } deriving (Show, Eq)

-- | JSON serialisation for 'MetaOpCode'.

showMeta :: MetaOpCode -> JSValue

showMeta (MetaOpCode params op) =

  let objparams = toDictCommonOpParams params

      objop = toDictOpCode op

  in makeObj (objparams ++ objop)

-- | JSON deserialisation for 'MetaOpCode'

readMeta :: JSValue -> Text.JSON.Result MetaOpCode

readMeta v = do

  meta <- readJSON v

  op <- readJSON v

  return $ MetaOpCode meta op

instance JSON MetaOpCode where

  showJSON = showMeta

  readJSON = readMeta

-- | Wraps an 'OpCode' with the default parameters to build a

-- 'MetaOpCode'.

wrapOpCode :: OpCode -> MetaOpCode

wrapOpCode = MetaOpCode defOpParams

-- | Sets the comment on a meta opcode.

setOpComment :: String -> MetaOpCode -> MetaOpCode

setOpComment comment (MetaOpCode common op) =

  MetaOpCode (common { opComment = Just comment}) op

-- | Sets the priority on a meta opcode.

setOpPriority :: OpSubmitPriority -> MetaOpCode -> MetaOpCode

setOpPriority prio (MetaOpCode common op) =

  MetaOpCode (common { opPriority = prio }) op