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{-# LANGUAGE TemplateHaskell #-}

{-| Implementation of opcodes parameters.

These are defined in a separate module only due to TemplateHaskell

stage restrictions - expressions defined in the current module can't

be passed to splices. So we have to either parameters/repeat each

parameter definition multiple times, or separate them into this

module.

-}

{-

Copyright (C) 2012 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.OpParams

  ( TagType(..)

  , TagObject(..)

  , tagObjectFrom

  , tagNameOf

  , decodeTagObject

  , encodeTagObject

  , ReplaceDisksMode(..)

  , DiskIndex

  , mkDiskIndex

  , unDiskIndex

  , DiskAccess(..)

  , INicParams(..)

  , IDiskParams(..)

  , RecreateDisksInfo(..)

  , DdmOldChanges(..)

  , SetParamsMods(..)

  , ExportTarget(..)

  , pInstanceName

  , pInstances

  , pName

  , pTagsList

  , pTagsObject

  , pOutputFields

  , pShutdownTimeout

  , pShutdownTimeout'

  , pShutdownInstance

  , pForce

  , pIgnoreOfflineNodes

  , pNodeName

  , pNodeNames

  , pGroupName

  , pMigrationMode

  , pMigrationLive

  , pMigrationCleanup

  , pForceVariant

  , pWaitForSync

  , pWaitForSyncFalse

  , pIgnoreConsistency

  , pStorageName

  , pUseLocking

  , pOpportunisticLocking

  , pNameCheck

  , pNodeGroupAllocPolicy

  , pGroupNodeParams

  , pQueryWhat

  , pEarlyRelease

  , pIpCheck

  , pIpConflictsCheck

  , pNoRemember

  , pMigrationTargetNode

  , pMoveTargetNode

  , pStartupPaused

  , pVerbose

  , pDebugSimulateErrors

  , pErrorCodes

  , pSkipChecks

  , pIgnoreErrors

  , pOptGroupName

  , pDiskParams

  , pHvState

  , pDiskState

  , pIgnoreIpolicy

  , pAllowRuntimeChgs

  , pInstDisks

  , pDiskTemplate

  , pOptDiskTemplate

  , pFileDriver

  , pFileStorageDir

  , pVgName

  , pEnabledHypervisors

  , pHypervisor

  , pClusterHvParams

  , pInstHvParams

  , pClusterBeParams

  , pInstBeParams

  , pResetDefaults

  , pOsHvp

  , pClusterOsParams

  , pInstOsParams

  , pCandidatePoolSize

  , pUidPool

  , pAddUids

  , pRemoveUids

  , pMaintainNodeHealth

  , pPreallocWipeDisks

  , pNicParams

  , pInstNics

  , pNdParams

  , pIpolicy

  , pDrbdHelper

  , pDefaultIAllocator

  , pMasterNetdev

  , pMasterNetmask

  , pReservedLvs

  , pHiddenOs

  , pBlacklistedOs

  , pUseExternalMipScript

  , pQueryFields

  , pQueryFilter

  , pOobCommand

  , pOobTimeout

  , pIgnoreStatus

  , pPowerDelay

  , pPrimaryIp

  , pSecondaryIp

  , pReadd

  , pNodeGroup

  , pMasterCapable

  , pVmCapable

  , pNames

  , pNodes

  , pRequiredNodes

  , pStorageType

  , pStorageChanges

  , pMasterCandidate

  , pOffline

  , pDrained

  , pAutoPromote

  , pPowered

  , pIallocator

  , pRemoteNode

  , pEvacMode

  , pInstCreateMode

  , pNoInstall

  , pInstOs

  , pPrimaryNode

  , pSecondaryNode

  , pSourceHandshake

  , pSourceInstance

  , pSourceShutdownTimeout

  , pSourceX509Ca

  , pSrcNode

  , pSrcPath

  , pStartInstance

  , pInstTags

  , pMultiAllocInstances

  , pTempOsParams

  , pTempHvParams

  , pTempBeParams

  , pIgnoreFailures

  , pNewName

  , pIgnoreSecondaries

  , pRebootType

  , pIgnoreDiskSize

  , pRecreateDisksInfo

  , pStatic

  , pInstParamsNicChanges

  , pInstParamsDiskChanges

  , pRuntimeMem

  , pOsNameChange

  , pDiskIndex

  , pDiskChgAmount

  , pDiskChgAbsolute

  , pTargetGroups

  , pExportMode

  , pExportTargetNode

  , pRemoveInstance

  , pIgnoreRemoveFailures

  , pX509KeyName

  , pX509DestCA

  , pTagSearchPattern

  , pRestrictedCommand

  , pReplaceDisksMode

  , pReplaceDisksList

  , pAllowFailover

  , pDelayDuration

  , pDelayOnMaster

  , pDelayOnNodes

  , pDelayRepeat

  , pIAllocatorDirection

  , pIAllocatorMode

  , pIAllocatorReqName

  , pIAllocatorNics

  , pIAllocatorDisks

  , pIAllocatorMemory

  , pIAllocatorVCpus

  , pIAllocatorOs

  , pIAllocatorInstances

  , pIAllocatorEvacMode

  , pIAllocatorSpindleUse

  , pIAllocatorCount

  , pJQueueNotifyWaitLock

  , pJQueueNotifyExec

  , pJQueueLogMessages

  , pJQueueFail

  , pTestDummyResult

  , pTestDummyMessages

  , pTestDummyFail

  , pTestDummySubmitJobs

  , pNetworkName

  , pNetworkAddress4

  , pNetworkGateway4

  , pNetworkAddress6

  , pNetworkGateway6

  , pNetworkMacPrefix

  , pNetworkAddRsvdIps

  , pNetworkRemoveRsvdIps

  , pNetworkMode

  , pNetworkLink

  , pDryRun

  , pDebugLevel

  , pOpPriority

  , pDependencies

  , pComment

  , pReason

  , pEnabledDiskTemplates

  , dOldQuery

  , dOldQueryNoLocking

  ) where

import Control.Monad (liftM)

import qualified Data.Set as Set

import Text.JSON (readJSON, showJSON, JSON, JSValue(..), fromJSString,

                  JSObject, toJSObject)

import qualified Text.JSON

import Text.JSON.Pretty (pp_value)

import Ganeti.BasicTypes

import qualified Ganeti.Constants as C

import Ganeti.THH

import Ganeti.JSON

import Ganeti.Types

import qualified Ganeti.Query.Language as Qlang

-- * Helper functions and types

-- * Type aliases

-- | Build a boolean field.

booleanField :: String -> Field

booleanField = flip simpleField [t| Bool |]

-- | Default a field to 'False'.

defaultFalse :: String -> Field

defaultFalse = defaultField [| False |] . booleanField

-- | Default a field to 'True'.

defaultTrue :: String -> Field

defaultTrue = defaultField [| True |] . booleanField

-- | An alias for a 'String' field.

stringField :: String -> Field

stringField = flip simpleField [t| String |]

-- | An alias for an optional string field.

optionalStringField :: String -> Field

optionalStringField = optionalField . stringField

-- | An alias for an optional non-empty string field.

optionalNEStringField :: String -> Field

optionalNEStringField = optionalField . flip simpleField [t| NonEmptyString |]

-- | Unchecked value, should be replaced by a better definition.

type UncheckedValue = JSValue

-- | Unchecked dict, should be replaced by a better definition.

type UncheckedDict = JSObject JSValue

-- | Unchecked list, shoild be replaced by a better definition.

type UncheckedList = [JSValue]

-- | Function to force a non-negative value, without returning via a

-- monad. This is needed for, and should be used /only/ in the case of

-- forcing constants. In case the constant is wrong (< 0), this will

-- become a runtime error.

forceNonNeg :: (Num a, Ord a, Show a) => a -> NonNegative a

forceNonNeg i = case mkNonNegative i of

                  Ok n -> n

                  Bad msg -> error msg

-- ** Tags

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

$(declareSADT "TagType"

  [ ("TagTypeInstance", 'C.tagInstance)

  , ("TagTypeNode",     'C.tagNode)

  , ("TagTypeGroup",    'C.tagNodegroup)

  , ("TagTypeCluster",  'C.tagCluster)

  ])

$(makeJSONInstance ''TagType)

-- | Data type holding a tag object (type and object name).

data TagObject = TagInstance String

               | TagNode     String

               | TagGroup    String

               | TagCluster

               deriving (Show, Eq)

-- | Tag type for a given tag object.

tagTypeOf :: TagObject -> TagType

tagTypeOf (TagInstance {}) = TagTypeInstance

tagTypeOf (TagNode     {}) = TagTypeNode

tagTypeOf (TagGroup    {}) = TagTypeGroup

tagTypeOf (TagCluster  {}) = TagTypeCluster

-- | Gets the potential tag object name.

tagNameOf :: TagObject -> Maybe String

tagNameOf (TagInstance s) = Just s

tagNameOf (TagNode     s) = Just s

tagNameOf (TagGroup    s) = Just s

tagNameOf  TagCluster     = Nothing

-- | Builds a 'TagObject' from a tag type and name.

tagObjectFrom :: (Monad m) => TagType -> JSValue -> m TagObject

tagObjectFrom TagTypeInstance (JSString s) =

  return . TagInstance $ fromJSString s

tagObjectFrom TagTypeNode     (JSString s) = return . TagNode $ fromJSString s

tagObjectFrom TagTypeGroup    (JSString s) = return . TagGroup $ fromJSString s

tagObjectFrom TagTypeCluster   JSNull      = return TagCluster

tagObjectFrom t v =

  fail $ "Invalid tag type/name combination: " ++ show t ++ "/" ++

         show (pp_value v)

-- | Name of the tag \"name\" field.

tagNameField :: String

tagNameField = "name"

-- | Custom encoder for 'TagObject' as represented in an opcode.

encodeTagObject :: TagObject -> (JSValue, [(String, JSValue)])

encodeTagObject t = ( showJSON (tagTypeOf t)

                    , [(tagNameField, maybe JSNull showJSON (tagNameOf t))] )

-- | Custom decoder for 'TagObject' as represented in an opcode.

decodeTagObject :: (Monad m) => [(String, JSValue)] -> JSValue -> m TagObject

decodeTagObject obj kind = do

  ttype <- fromJVal kind

  tname <- fromObj obj tagNameField

  tagObjectFrom ttype tname

-- ** Disks

-- | Replace disks type.

$(declareSADT "ReplaceDisksMode"

  [ ("ReplaceOnPrimary",    'C.replaceDiskPri)

  , ("ReplaceOnSecondary",  'C.replaceDiskSec)

  , ("ReplaceNewSecondary", 'C.replaceDiskChg)

  , ("ReplaceAuto",         'C.replaceDiskAuto)

  ])

$(makeJSONInstance ''ReplaceDisksMode)

-- | Disk index type (embedding constraints on the index value via a

-- smart constructor).

newtype DiskIndex = DiskIndex { unDiskIndex :: Int }

  deriving (Show, Eq, Ord)

-- | Smart constructor for 'DiskIndex'.

mkDiskIndex :: (Monad m) => Int -> m DiskIndex

mkDiskIndex i | i >= 0 && i < C.maxDisks = return (DiskIndex i)

              | otherwise = fail $ "Invalid value for disk index '" ++

                            show i ++ "', required between 0 and " ++

                            show C.maxDisks

instance JSON DiskIndex where

  readJSON v = readJSON v >>= mkDiskIndex

  showJSON = showJSON . unDiskIndex

-- ** I* param types

-- | Type holding disk access modes.

$(declareSADT "DiskAccess"

  [ ("DiskReadOnly",  'C.diskRdonly)

  , ("DiskReadWrite", 'C.diskRdwr)

  ])

$(makeJSONInstance ''DiskAccess)

-- | NIC modification definition.

$(buildObject "INicParams" "inic"

  [ optionalField $ simpleField C.inicMac  [t| NonEmptyString |]

  , optionalField $ simpleField C.inicIp   [t| String         |]

  , optionalField $ simpleField C.inicMode [t| NonEmptyString |]

  , optionalField $ simpleField C.inicLink [t| NonEmptyString |]

  , optionalField $ simpleField C.inicName [t| NonEmptyString |]

  ])

-- | Disk modification definition. FIXME: disksize should be VTYPE_UNIT.

$(buildObject "IDiskParams" "idisk"

  [ optionalField $ simpleField C.idiskSize   [t| Int            |]

  , optionalField $ simpleField C.idiskMode   [t| DiskAccess     |]

  , optionalField $ simpleField C.idiskAdopt  [t| NonEmptyString |]

  , optionalField $ simpleField C.idiskVg     [t| NonEmptyString |]

  , optionalField $ simpleField C.idiskMetavg [t| NonEmptyString |]

  , optionalField $ simpleField C.idiskName   [t| NonEmptyString |]

  ])

-- | Disk changes type for OpInstanceRecreateDisks. This is a bit

-- strange, because the type in Python is something like Either

-- [DiskIndex] [DiskChanges], but we can't represent the type of an

-- empty list in JSON, so we have to add a custom case for the empty

-- list.

data RecreateDisksInfo

  = RecreateDisksAll

  | RecreateDisksIndices (NonEmpty DiskIndex)

  | RecreateDisksParams (NonEmpty (DiskIndex, IDiskParams))

    deriving (Eq, Show)

readRecreateDisks :: JSValue -> Text.JSON.Result RecreateDisksInfo

readRecreateDisks (JSArray []) = return RecreateDisksAll

readRecreateDisks v =

  case readJSON v::Text.JSON.Result [DiskIndex] of

    Text.JSON.Ok indices -> liftM RecreateDisksIndices (mkNonEmpty indices)

    _ -> case readJSON v::Text.JSON.Result [(DiskIndex, IDiskParams)] of

           Text.JSON.Ok params -> liftM RecreateDisksParams (mkNonEmpty params)

           _ -> fail $ "Can't parse disk information as either list of disk"

                ++ " indices or list of disk parameters; value received:"

                ++ show (pp_value v)

instance JSON RecreateDisksInfo where

  readJSON = readRecreateDisks

  showJSON  RecreateDisksAll            = showJSON ()

  showJSON (RecreateDisksIndices idx)   = showJSON idx

  showJSON (RecreateDisksParams params) = showJSON params

-- | Simple type for old-style ddm changes.

data DdmOldChanges = DdmOldIndex (NonNegative Int)

                   | DdmOldMod DdmSimple

                     deriving (Eq, Show)

readDdmOldChanges :: JSValue -> Text.JSON.Result DdmOldChanges

readDdmOldChanges v =

  case readJSON v::Text.JSON.Result (NonNegative Int) of

    Text.JSON.Ok nn -> return $ DdmOldIndex nn

    _ -> case readJSON v::Text.JSON.Result DdmSimple of

           Text.JSON.Ok ddms -> return $ DdmOldMod ddms

           _ -> fail $ "Can't parse value '" ++ show (pp_value v) ++ "' as"

                ++ " either index or modification"

instance JSON DdmOldChanges where

  showJSON (DdmOldIndex i) = showJSON i

  showJSON (DdmOldMod m)   = showJSON m

  readJSON = readDdmOldChanges

-- | Instance disk or nic modifications.

data SetParamsMods a

  = SetParamsEmpty

  | SetParamsDeprecated (NonEmpty (DdmOldChanges, a))

  | SetParamsNew (NonEmpty (DdmFull, Int, a))

    deriving (Eq, Show)

-- | Custom deserialiser for 'SetParamsMods'.

readSetParams :: (JSON a) => JSValue -> Text.JSON.Result (SetParamsMods a)

readSetParams (JSArray []) = return SetParamsEmpty

readSetParams v =

  case readJSON v::Text.JSON.Result [(DdmOldChanges, JSValue)] of

    Text.JSON.Ok _ -> liftM SetParamsDeprecated $ readJSON v

    _ -> liftM SetParamsNew $ readJSON v

instance (JSON a) => JSON (SetParamsMods a) where

  showJSON SetParamsEmpty = showJSON ()

  showJSON (SetParamsDeprecated v) = showJSON v

  showJSON (SetParamsNew v) = showJSON v

  readJSON = readSetParams

-- | Custom type for target_node parameter of OpBackupExport, which

-- varies depending on mode. FIXME: this uses an UncheckedList since

-- we don't care about individual rows (just like the Python code

-- tests). But the proper type could be parsed if we wanted.

data ExportTarget = ExportTargetLocal NonEmptyString

                  | ExportTargetRemote UncheckedList

                    deriving (Eq, Show)

-- | Custom reader for 'ExportTarget'.

readExportTarget :: JSValue -> Text.JSON.Result ExportTarget

readExportTarget (JSString s) = liftM ExportTargetLocal $

                                mkNonEmpty (fromJSString s)

readExportTarget (JSArray arr) = return $ ExportTargetRemote arr

readExportTarget v = fail $ "Invalid value received for 'target_node': " ++

                     show (pp_value v)

instance JSON ExportTarget where

  showJSON (ExportTargetLocal s)  = showJSON s

  showJSON (ExportTargetRemote l) = showJSON l

  readJSON = readExportTarget

-- * Parameters

-- | A required instance name (for single-instance LUs).

pInstanceName :: Field

pInstanceName = simpleField "instance_name" [t| String |]

-- | A list of instances.

pInstances :: Field

pInstances = defaultField [| [] |] $

             simpleField "instances" [t| [NonEmptyString] |]

-- | A generic name.

pName :: Field

pName = simpleField "name" [t| NonEmptyString |]

-- | Tags list.

pTagsList :: Field

pTagsList = simpleField "tags" [t| [String] |]

-- | Tags object.

pTagsObject :: Field

pTagsObject =

  customField 'decodeTagObject 'encodeTagObject [tagNameField] $

  simpleField "kind" [t| TagObject |]

-- | Selected output fields.

pOutputFields :: Field

pOutputFields = simpleField "output_fields" [t| [NonEmptyString] |]

-- | How long to wait for instance to shut down.

pShutdownTimeout :: Field

pShutdownTimeout = defaultField [| forceNonNeg C.defaultShutdownTimeout |] $

                   simpleField "shutdown_timeout" [t| NonNegative Int |]

-- | Another name for the shutdown timeout, because we like to be

-- inconsistent.

pShutdownTimeout' :: Field

pShutdownTimeout' =

  renameField "InstShutdownTimeout" .

  defaultField [| forceNonNeg C.defaultShutdownTimeout |] $

  simpleField "timeout" [t| NonNegative Int |]

-- | Whether to shutdown the instance in backup-export.

pShutdownInstance :: Field

pShutdownInstance = defaultTrue "shutdown"

-- | Whether to force the operation.

pForce :: Field

pForce = defaultFalse "force"

-- | Whether to ignore offline nodes.

pIgnoreOfflineNodes :: Field

pIgnoreOfflineNodes = defaultFalse "ignore_offline_nodes"

-- | A required node name (for single-node LUs).

pNodeName :: Field

pNodeName = simpleField "node_name" [t| NonEmptyString |]

-- | List of nodes.

pNodeNames :: Field

pNodeNames =

  defaultField [| [] |] $ simpleField "node_names" [t| [NonEmptyString] |]

-- | A required node group name (for single-group LUs).

pGroupName :: Field

pGroupName = simpleField "group_name" [t| NonEmptyString |]

-- | Migration type (live\/non-live).

pMigrationMode :: Field

pMigrationMode =

  renameField "MigrationMode" .

  optionalField $

  simpleField "mode" [t| MigrationMode |]

-- | Obsolete \'live\' migration mode (boolean).

pMigrationLive :: Field

pMigrationLive =

  renameField "OldLiveMode" . optionalField $ booleanField "live"

-- | Migration cleanup parameter.

pMigrationCleanup :: Field

pMigrationCleanup = renameField "MigrationCleanup" $ defaultFalse "cleanup"

-- | Whether to force an unknown OS variant.

pForceVariant :: Field

pForceVariant = defaultFalse "force_variant"

-- | Whether to wait for the disk to synchronize.

pWaitForSync :: Field

pWaitForSync = defaultTrue "wait_for_sync"

-- | Whether to wait for the disk to synchronize (defaults to false).

pWaitForSyncFalse :: Field

pWaitForSyncFalse = defaultField [| False |] pWaitForSync

-- | Whether to ignore disk consistency

pIgnoreConsistency :: Field

pIgnoreConsistency = defaultFalse "ignore_consistency"

-- | Storage name.

pStorageName :: Field

pStorageName =

  renameField "StorageName" $ simpleField "name" [t| NonEmptyString |]

-- | Whether to use synchronization.

pUseLocking :: Field

pUseLocking = defaultFalse "use_locking"

-- | Whether to employ opportunistic locking for nodes, meaning nodes already

-- locked by another opcode won't be considered for instance allocation (only

-- when an iallocator is used).

pOpportunisticLocking :: Field

pOpportunisticLocking = defaultFalse "opportunistic_locking"

-- | Whether to check name.

pNameCheck :: Field

pNameCheck = defaultTrue "name_check"

-- | Instance allocation policy.

pNodeGroupAllocPolicy :: Field

pNodeGroupAllocPolicy = optionalField $

                        simpleField "alloc_policy" [t| AllocPolicy |]

-- | Default node parameters for group.

pGroupNodeParams :: Field

pGroupNodeParams = optionalField $ simpleField "ndparams" [t| UncheckedDict |]

-- | Resource(s) to query for.

pQueryWhat :: Field

pQueryWhat = simpleField "what" [t| Qlang.QueryTypeOp |]

-- | Whether to release locks as soon as possible.

pEarlyRelease :: Field

pEarlyRelease = defaultFalse "early_release"

-- | Whether to ensure instance's IP address is inactive.

pIpCheck :: Field

pIpCheck = defaultTrue "ip_check"

-- | Check for conflicting IPs.

pIpConflictsCheck :: Field

pIpConflictsCheck = defaultTrue "conflicts_check"

-- | Do not remember instance state changes.

pNoRemember :: Field

pNoRemember = defaultFalse "no_remember"

-- | Target node for instance migration/failover.

pMigrationTargetNode :: Field

pMigrationTargetNode = optionalNEStringField "target_node"

-- | Target node for instance move (required).

pMoveTargetNode :: Field

pMoveTargetNode =

  renameField "MoveTargetNode" $

  simpleField "target_node" [t| NonEmptyString |]

-- | Pause instance at startup.

pStartupPaused :: Field

pStartupPaused = defaultFalse "startup_paused"

-- | Verbose mode.

pVerbose :: Field

pVerbose = defaultFalse "verbose"

-- ** Parameters for cluster verification

-- | Whether to simulate errors (useful for debugging).

pDebugSimulateErrors :: Field

pDebugSimulateErrors = defaultFalse "debug_simulate_errors"

-- | Error codes.

pErrorCodes :: Field

pErrorCodes = defaultFalse "error_codes"

-- | Which checks to skip.

pSkipChecks :: Field

pSkipChecks = defaultField [| Set.empty |] $

              simpleField "skip_checks" [t| Set.Set VerifyOptionalChecks |]

-- | List of error codes that should be treated as warnings.

pIgnoreErrors :: Field

pIgnoreErrors = defaultField [| Set.empty |] $

                simpleField "ignore_errors" [t| Set.Set CVErrorCode |]

-- | Optional group name.

pOptGroupName :: Field

pOptGroupName = renameField "OptGroupName" .

                optionalField $ simpleField "group_name" [t| NonEmptyString |]

-- | Disk templates' parameter defaults.

pDiskParams :: Field

pDiskParams = optionalField $

              simpleField "diskparams" [t| GenericContainer DiskTemplate

                                           UncheckedDict |]

-- * Parameters for node resource model

-- | Set hypervisor states.

pHvState :: Field

pHvState = optionalField $ simpleField "hv_state" [t| UncheckedDict |]

-- | Set disk states.

pDiskState :: Field

pDiskState = optionalField $ simpleField "disk_state" [t| UncheckedDict |]

-- | Whether to ignore ipolicy violations.

pIgnoreIpolicy :: Field

pIgnoreIpolicy = defaultFalse "ignore_ipolicy"

-- | Allow runtime changes while migrating.

pAllowRuntimeChgs :: Field

pAllowRuntimeChgs = defaultTrue "allow_runtime_changes"

-- | Utility type for OpClusterSetParams.

type TestClusterOsListItem = (DdmSimple, NonEmptyString)

-- | Utility type of OsList.

type TestClusterOsList = [TestClusterOsListItem]

-- Utility type for NIC definitions.

--type TestNicDef = INicParams

-- | List of instance disks.

pInstDisks :: Field

pInstDisks = renameField "instDisks" $ simpleField "disks" [t| [IDiskParams] |]

-- | Instance disk template.

pDiskTemplate :: Field

pDiskTemplate = simpleField "disk_template" [t| DiskTemplate |]

-- | Instance disk template.

pOptDiskTemplate :: Field

pOptDiskTemplate =

  optionalField .

  renameField "OptDiskTemplate" $

  simpleField "disk_template" [t| DiskTemplate |]

-- | File driver.

pFileDriver :: Field

pFileDriver = optionalField $ simpleField "file_driver" [t| FileDriver |]

-- | Directory for storing file-backed disks.

pFileStorageDir :: Field

pFileStorageDir = optionalNEStringField "file_storage_dir"

-- | Volume group name.

pVgName :: Field

pVgName = optionalStringField "vg_name"

-- | List of enabled hypervisors.

pEnabledHypervisors :: Field

pEnabledHypervisors =

  optionalField $

  simpleField "enabled_hypervisors" [t| NonEmpty Hypervisor |]

-- | List of enabled disk templates.

pEnabledDiskTemplates :: Field

pEnabledDiskTemplates =

  optionalField $

  simpleField "enabled_disk_templates" [t| NonEmpty DiskTemplate |]

-- | Selected hypervisor for an instance.

pHypervisor :: Field

pHypervisor =

  optionalField $

  simpleField "hypervisor" [t| Hypervisor |]

-- | Cluster-wide hypervisor parameters, hypervisor-dependent.

pClusterHvParams :: Field

pClusterHvParams =

  renameField "ClusterHvParams" .

  optionalField $

  simpleField "hvparams" [t| Container UncheckedDict |]

-- | Instance hypervisor parameters.

pInstHvParams :: Field

pInstHvParams =

  renameField "InstHvParams" .

  defaultField [| toJSObject [] |] $

  simpleField "hvparams" [t| UncheckedDict |]

-- | Cluster-wide beparams.

pClusterBeParams :: Field

pClusterBeParams =

  renameField "ClusterBeParams" .

  optionalField $ simpleField "beparams" [t| UncheckedDict |]

-- | Instance beparams.

pInstBeParams :: Field

pInstBeParams =

  renameField "InstBeParams" .

  defaultField [| toJSObject [] |] $

  simpleField "beparams" [t| UncheckedDict |]

-- | Reset instance parameters to default if equal.

pResetDefaults :: Field

pResetDefaults = defaultFalse "identify_defaults"

-- | Cluster-wide per-OS hypervisor parameter defaults.

pOsHvp :: Field

pOsHvp = optionalField $ simpleField "os_hvp" [t| Container UncheckedDict |]

-- | Cluster-wide OS parameter defaults.

pClusterOsParams :: Field

pClusterOsParams =

  renameField "ClusterOsParams" .

  optionalField $ simpleField "osparams" [t| Container UncheckedDict |]

-- | Instance OS parameters.

pInstOsParams :: Field

pInstOsParams =

  renameField "InstOsParams" . defaultField [| toJSObject [] |] $

  simpleField "osparams" [t| UncheckedDict |]

-- | Temporary OS parameters (currently only in reinstall, might be

-- added to install as well).

pTempOsParams :: Field

pTempOsParams =

  renameField "TempOsParams" .

  optionalField $ simpleField "osparams" [t| UncheckedDict |]

-- | Temporary hypervisor parameters, hypervisor-dependent.

pTempHvParams :: Field

pTempHvParams =

  renameField "TempHvParams" .

  defaultField [| toJSObject [] |] $

  simpleField "hvparams" [t| UncheckedDict |]

-- | Temporary backend parameters.

pTempBeParams :: Field

pTempBeParams =

  renameField "TempBeParams" .

  defaultField [| toJSObject [] |] $

  simpleField "beparams" [t| UncheckedDict |]

-- | Candidate pool size.

pCandidatePoolSize :: Field

pCandidatePoolSize =

  optionalField $ simpleField "candidate_pool_size" [t| Positive Int |]

-- | Set UID pool, must be list of lists describing UID ranges (two

-- items, start and end inclusive.

pUidPool :: Field

pUidPool = optionalField $ simpleField "uid_pool" [t| [[(Int, Int)]] |]

-- | Extend UID pool, must be list of lists describing UID ranges (two

-- items, start and end inclusive.

pAddUids :: Field

pAddUids = optionalField $ simpleField "add_uids" [t| [[(Int, Int)]] |]

-- | Shrink UID pool, must be list of lists describing UID ranges (two

-- items, start and end inclusive) to be removed.

pRemoveUids :: Field

pRemoveUids = optionalField $ simpleField "remove_uids" [t| [[(Int, Int)]] |]

-- | Whether to automatically maintain node health.

pMaintainNodeHealth :: Field

pMaintainNodeHealth = optionalField $ booleanField "maintain_node_health"

-- | Whether to wipe disks before allocating them to instances.

pPreallocWipeDisks :: Field

pPreallocWipeDisks = optionalField $ booleanField "prealloc_wipe_disks"

-- | Cluster-wide NIC parameter defaults.

pNicParams :: Field

pNicParams = optionalField $ simpleField "nicparams" [t| INicParams |]

-- | Instance NIC definitions.

pInstNics :: Field

pInstNics = simpleField "nics" [t| [INicParams] |]

-- | Cluster-wide node parameter defaults.

pNdParams :: Field

pNdParams = optionalField $ simpleField "ndparams" [t| UncheckedDict |]

-- | Cluster-wide ipolicy specs.

pIpolicy :: Field

pIpolicy = optionalField $ simpleField "ipolicy" [t| UncheckedDict |]

-- | DRBD helper program.

pDrbdHelper :: Field

pDrbdHelper = optionalStringField "drbd_helper"

-- | Default iallocator for cluster.

pDefaultIAllocator :: Field

pDefaultIAllocator = optionalStringField "default_iallocator"

-- | Master network device.

pMasterNetdev :: Field

pMasterNetdev = optionalStringField "master_netdev"

-- | Netmask of the master IP.

pMasterNetmask :: Field

pMasterNetmask =

  optionalField $ simpleField "master_netmask" [t| NonNegative Int |]

-- | List of reserved LVs.

pReservedLvs :: Field

pReservedLvs =

  optionalField $ simpleField "reserved_lvs" [t| [NonEmptyString] |]

-- | Modify list of hidden operating systems: each modification must

-- have two items, the operation and the OS name; the operation can be

-- add or remove.

pHiddenOs :: Field

pHiddenOs = optionalField $ simpleField "hidden_os" [t| TestClusterOsList |]

-- | Modify list of blacklisted operating systems: each modification

-- must have two items, the operation and the OS name; the operation

-- can be add or remove.

pBlacklistedOs :: Field

pBlacklistedOs =

  optionalField $ simpleField "blacklisted_os" [t| TestClusterOsList |]

-- | Whether to use an external master IP address setup script.

pUseExternalMipScript :: Field

pUseExternalMipScript = optionalField $ booleanField "use_external_mip_script"

-- | Requested fields.

pQueryFields :: Field

pQueryFields = simpleField "fields" [t| [NonEmptyString] |]

-- | Query filter.

pQueryFilter :: Field

pQueryFilter = simpleField "qfilter" [t| Qlang.Filter String |]

-- | OOB command to run.

pOobCommand :: Field

pOobCommand = simpleField "command" [t| OobCommand |]

-- | Timeout before the OOB helper will be terminated.

pOobTimeout :: Field

pOobTimeout =

  defaultField [| C.oobTimeout |] $ simpleField "timeout" [t| Int |]

-- | Ignores the node offline status for power off.

pIgnoreStatus :: Field

pIgnoreStatus = defaultFalse "ignore_status"

-- | Time in seconds to wait between powering on nodes.

pPowerDelay :: Field

pPowerDelay =

  -- FIXME: we can't use the proper type "NonNegative Double", since

  -- the default constant is a plain Double, not a non-negative one.

  defaultField [| C.oobPowerDelay |] $

  simpleField "power_delay" [t| Double |]

-- | Primary IP address.

pPrimaryIp :: Field

pPrimaryIp = optionalStringField "primary_ip"

-- | Secondary IP address.

pSecondaryIp :: Field

pSecondaryIp = optionalNEStringField "secondary_ip"

-- | Whether node is re-added to cluster.

pReadd :: Field

pReadd = defaultFalse "readd"

-- | Initial node group.

pNodeGroup :: Field

pNodeGroup = optionalNEStringField "group"

-- | Whether node can become master or master candidate.

pMasterCapable :: Field

pMasterCapable = optionalField $ booleanField "master_capable"

-- | Whether node can host instances.

pVmCapable :: Field

pVmCapable = optionalField $ booleanField "vm_capable"

-- | List of names.

pNames :: Field

pNames = defaultField [| [] |] $ simpleField "names" [t| [NonEmptyString] |]

-- | List of node names.

pNodes :: Field

pNodes = defaultField [| [] |] $ simpleField "nodes" [t| [NonEmptyString] |]

-- | Required list of node names.

pRequiredNodes :: Field

pRequiredNodes =

  renameField "ReqNodes " $ simpleField "nodes" [t| [NonEmptyString] |]

-- | Storage type.

pStorageType :: Field

pStorageType = simpleField "storage_type" [t| StorageType |]

-- | Storage changes (unchecked).

pStorageChanges :: Field

pStorageChanges = simpleField "changes" [t| UncheckedDict |]

-- | Whether the node should become a master candidate.

pMasterCandidate :: Field

pMasterCandidate = optionalField $ booleanField "master_candidate"

-- | Whether the node should be marked as offline.

pOffline :: Field

pOffline = optionalField $ booleanField "offline"

-- | Whether the node should be marked as drained.

pDrained ::Field

pDrained = optionalField $ booleanField "drained"

-- | Whether node(s) should be promoted to master candidate if necessary.

pAutoPromote :: Field

pAutoPromote = defaultFalse "auto_promote"

-- | Whether the node should be marked as powered

pPowered :: Field

pPowered = optionalField $ booleanField "powered"

-- | Iallocator for deciding the target node for shared-storage

-- instances during migrate and failover.

pIallocator :: Field

pIallocator = optionalNEStringField "iallocator"

-- | New secondary node.

pRemoteNode :: Field

pRemoteNode = optionalNEStringField "remote_node"

-- | Node evacuation mode.

pEvacMode :: Field

pEvacMode = renameField "EvacMode" $ simpleField "mode" [t| NodeEvacMode |]

-- | Instance creation mode.

pInstCreateMode :: Field

pInstCreateMode =

  renameField "InstCreateMode" $ simpleField "mode" [t| InstCreateMode |]

-- | Do not install the OS (will disable automatic start).

pNoInstall :: Field

pNoInstall = optionalField $ booleanField "no_install"

-- | OS type for instance installation.

pInstOs :: Field

pInstOs = optionalNEStringField "os_type"

-- | Primary node for an instance.

pPrimaryNode :: Field

pPrimaryNode = optionalNEStringField "pnode"

-- | Secondary node for an instance.

pSecondaryNode :: Field

pSecondaryNode = optionalNEStringField "snode"

-- | Signed handshake from source (remote import only).

pSourceHandshake :: Field

pSourceHandshake =

  optionalField $ simpleField "source_handshake" [t| UncheckedList |]

-- | Source instance name (remote import only).

pSourceInstance :: Field

pSourceInstance = optionalNEStringField "source_instance_name"

-- | How long source instance was given to shut down (remote import only).

-- FIXME: non-negative int, whereas the constant is a plain int.

pSourceShutdownTimeout :: Field

pSourceShutdownTimeout =

  defaultField [| forceNonNeg C.defaultShutdownTimeout |] $

  simpleField "source_shutdown_timeout" [t| NonNegative Int |]

-- | Source X509 CA in PEM format (remote import only).

pSourceX509Ca :: Field

pSourceX509Ca = optionalNEStringField "source_x509_ca"

-- | Source node for import.

pSrcNode :: Field

pSrcNode = optionalNEStringField "src_node"

-- | Source directory for import.

pSrcPath :: Field

pSrcPath = optionalNEStringField "src_path"

-- | Whether to start instance after creation.

pStartInstance :: Field

pStartInstance = defaultTrue "start"

-- | Instance tags. FIXME: unify/simplify with pTags, once that

-- migrates to NonEmpty String.

pInstTags :: Field

pInstTags =

  renameField "InstTags" .

  defaultField [| [] |] $

  simpleField "tags" [t| [NonEmptyString] |]

-- | Unchecked list of OpInstanceCreate, used in OpInstanceMultiAlloc.

pMultiAllocInstances :: Field

pMultiAllocInstances =

  renameField "InstMultiAlloc" .

  defaultField [| [] |] $

  simpleField "instances"[t| UncheckedList |]

-- | Ignore failures parameter.

pIgnoreFailures :: Field

pIgnoreFailures = defaultFalse "ignore_failures"

-- | New instance or cluster name.

pNewName :: Field

pNewName = simpleField "new_name" [t| NonEmptyString |]

-- | Whether to start the instance even if secondary disks are failing.

pIgnoreSecondaries :: Field

pIgnoreSecondaries = defaultFalse "ignore_secondaries"

-- | How to reboot the instance.

pRebootType :: Field

pRebootType = simpleField "reboot_type" [t| RebootType |]

-- | Whether to ignore recorded disk size.

pIgnoreDiskSize :: Field

pIgnoreDiskSize = defaultFalse "ignore_size"

-- | Disk list for recreate disks.

pRecreateDisksInfo :: Field

pRecreateDisksInfo =

  renameField "RecreateDisksInfo" .

  defaultField [| RecreateDisksAll |] $

  simpleField "disks" [t| RecreateDisksInfo |]

-- | Whether to only return configuration data without querying nodes.

pStatic :: Field

pStatic = defaultFalse "static"

-- | InstanceSetParams NIC changes.

pInstParamsNicChanges :: Field

pInstParamsNicChanges =

  renameField "InstNicChanges" .

  defaultField [| SetParamsEmpty |] $

  simpleField "nics" [t| SetParamsMods INicParams |]

-- | InstanceSetParams Disk changes.

pInstParamsDiskChanges :: Field

pInstParamsDiskChanges =

  renameField "InstDiskChanges" .

  defaultField [| SetParamsEmpty |] $

  simpleField "disks" [t| SetParamsMods IDiskParams |]

-- | New runtime memory.

pRuntimeMem :: Field

pRuntimeMem = optionalField $ simpleField "runtime_mem" [t| Positive Int |]

-- | Change the instance's OS without reinstalling the instance

pOsNameChange :: Field

pOsNameChange = optionalNEStringField "os_name"

-- | Disk index for e.g. grow disk.

pDiskIndex :: Field

pDiskIndex = renameField "DiskIndex " $ simpleField "disk" [t| DiskIndex |]

-- | Disk amount to add or grow to.

pDiskChgAmount :: Field

pDiskChgAmount =

  renameField "DiskChgAmount" $ simpleField "amount" [t| NonNegative Int |]

-- | Whether the amount parameter is an absolute target or a relative one.

pDiskChgAbsolute :: Field

pDiskChgAbsolute = renameField "DiskChkAbsolute" $ defaultFalse "absolute"

-- | Destination group names or UUIDs (defaults to \"all but current group\".

pTargetGroups :: Field

pTargetGroups =

  optionalField $ simpleField "target_groups" [t| [NonEmptyString] |]

-- | Export mode field.

pExportMode :: Field

pExportMode =

  renameField "ExportMode" $ simpleField "mode" [t| ExportMode |]

-- | Export target_node field, depends on mode.

pExportTargetNode :: Field

pExportTargetNode =

  renameField "ExportTarget" $

  simpleField "target_node" [t| ExportTarget |]

-- | Whether to remove instance after export.

pRemoveInstance :: Field

pRemoveInstance = defaultFalse "remove_instance"

-- | Whether to ignore failures while removing instances.

pIgnoreRemoveFailures :: Field

pIgnoreRemoveFailures = defaultFalse "ignore_remove_failures"

-- | Name of X509 key (remote export only).

pX509KeyName :: Field

pX509KeyName = optionalField $ simpleField "x509_key_name" [t| UncheckedList |]

-- | Destination X509 CA (remote export only).

pX509DestCA :: Field

pX509DestCA = optionalNEStringField "destination_x509_ca"

-- | Search pattern (regular expression). FIXME: this should be

-- compiled at load time?

pTagSearchPattern :: Field

pTagSearchPattern =

  renameField "TagSearchPattern" $ simpleField "pattern" [t| NonEmptyString |]

-- | Restricted command name.

pRestrictedCommand :: Field

pRestrictedCommand =

  renameField "RestrictedCommand" $

  simpleField "command" [t| NonEmptyString |]

-- | Replace disks mode.

pReplaceDisksMode :: Field

pReplaceDisksMode =

  renameField "ReplaceDisksMode" $ simpleField "mode" [t| ReplaceDisksMode |]

-- | List of disk indices.

pReplaceDisksList :: Field

pReplaceDisksList =

  renameField "ReplaceDisksList" $ simpleField "disks" [t| [DiskIndex] |]

-- | Whether do allow failover in migrations.

pAllowFailover :: Field

pAllowFailover = defaultFalse "allow_failover"

-- * Test opcode parameters

-- | Duration parameter for 'OpTestDelay'.

pDelayDuration :: Field

pDelayDuration =

  renameField "DelayDuration" $ simpleField "duration" [t| Double |]

-- | on_master field for 'OpTestDelay'.

pDelayOnMaster :: Field

pDelayOnMaster = renameField "DelayOnMaster" $ defaultTrue "on_master"

-- | on_nodes field for 'OpTestDelay'.

pDelayOnNodes :: Field

pDelayOnNodes =

  renameField "DelayOnNodes" .

  defaultField [| [] |] $

  simpleField "on_nodes" [t| [NonEmptyString] |]

-- | Repeat parameter for OpTestDelay.

pDelayRepeat :: Field

pDelayRepeat =

  renameField "DelayRepeat" .

  defaultField [| forceNonNeg (0::Int) |] $

  simpleField "repeat" [t| NonNegative Int |]

-- | IAllocator test direction.

pIAllocatorDirection :: Field

pIAllocatorDirection =

  renameField "IAllocatorDirection" $

  simpleField "direction" [t| IAllocatorTestDir |]

-- | IAllocator test mode.

pIAllocatorMode :: Field

pIAllocatorMode =

  renameField "IAllocatorMode" $

  simpleField "mode" [t| IAllocatorMode |]

-- | IAllocator target name (new instance, node to evac, etc.).

pIAllocatorReqName :: Field

pIAllocatorReqName =

  renameField "IAllocatorReqName" $ simpleField "name" [t| NonEmptyString |]

-- | Custom OpTestIAllocator nics.

pIAllocatorNics :: Field

pIAllocatorNics =

  renameField "IAllocatorNics" $ simpleField "nics" [t| [UncheckedDict] |]

-- | Custom OpTestAllocator disks.

pIAllocatorDisks :: Field

pIAllocatorDisks =

  renameField "IAllocatorDisks" $ simpleField "disks" [t| UncheckedList |]

-- | IAllocator memory field.

pIAllocatorMemory :: Field

pIAllocatorMemory =

  renameField "IAllocatorMem" .

  optionalField $

  simpleField "memory" [t| NonNegative Int |]

-- | IAllocator vcpus field.

pIAllocatorVCpus :: Field

pIAllocatorVCpus =

  renameField "IAllocatorVCpus" .

  optionalField $

  simpleField "vcpus" [t| NonNegative Int |]

-- | IAllocator os field.

pIAllocatorOs :: Field

pIAllocatorOs = renameField "IAllocatorOs" $ optionalNEStringField "os"

-- | IAllocator instances field.

pIAllocatorInstances :: Field

pIAllocatorInstances =

  renameField "IAllocatorInstances " .

  optionalField $

  simpleField "instances" [t| [NonEmptyString] |]

-- | IAllocator evac mode.

pIAllocatorEvacMode :: Field

pIAllocatorEvacMode =

  renameField "IAllocatorEvacMode" .

  optionalField $

  simpleField "evac_mode" [t| NodeEvacMode |]

-- | IAllocator spindle use.

pIAllocatorSpindleUse :: Field

pIAllocatorSpindleUse =

  renameField "IAllocatorSpindleUse" .

  defaultField [| forceNonNeg (1::Int) |] $

  simpleField "spindle_use" [t| NonNegative Int |]

-- | IAllocator count field.

pIAllocatorCount :: Field

pIAllocatorCount =

  renameField "IAllocatorCount" .

  defaultField [| forceNonNeg (1::Int) |] $

  simpleField "count" [t| NonNegative Int |]

-- | 'OpTestJqueue' notify_waitlock.

pJQueueNotifyWaitLock :: Field

pJQueueNotifyWaitLock = defaultFalse "notify_waitlock"

-- | 'OpTestJQueue' notify_exec.

pJQueueNotifyExec :: Field

pJQueueNotifyExec = defaultFalse "notify_exec"

-- | 'OpTestJQueue' log_messages.

pJQueueLogMessages :: Field

pJQueueLogMessages =

  defaultField [| [] |] $ simpleField "log_messages" [t| [String] |]

-- | 'OpTestJQueue' fail attribute.

pJQueueFail :: Field

pJQueueFail =

  renameField "JQueueFail" $ defaultFalse "fail"

-- | 'OpTestDummy' result field.

pTestDummyResult :: Field

pTestDummyResult =

  renameField "TestDummyResult" $ simpleField "result" [t| UncheckedValue |]

-- | 'OpTestDummy' messages field.

pTestDummyMessages :: Field

pTestDummyMessages =

  renameField "TestDummyMessages" $

  simpleField "messages" [t| UncheckedValue |]

-- | 'OpTestDummy' fail field.

pTestDummyFail :: Field

pTestDummyFail =

  renameField "TestDummyFail" $ simpleField "fail" [t| UncheckedValue |]

-- | 'OpTestDummy' submit_jobs field.

pTestDummySubmitJobs :: Field

pTestDummySubmitJobs =

  renameField "TestDummySubmitJobs" $

  simpleField "submit_jobs" [t| UncheckedValue |]

-- * Network parameters

-- | Network name.

pNetworkName :: Field

pNetworkName = simpleField "network_name" [t| NonEmptyString |]

-- | Network address (IPv4 subnet). FIXME: no real type for this.

pNetworkAddress4 :: Field

pNetworkAddress4 =

  renameField "NetworkAddress4" $

  simpleField "network" [t| NonEmptyString |]

-- | Network gateway (IPv4 address). FIXME: no real type for this.

pNetworkGateway4 :: Field

pNetworkGateway4 =

  renameField "NetworkGateway4" $

  optionalNEStringField "gateway"

-- | Network address (IPv6 subnet). FIXME: no real type for this.

pNetworkAddress6 :: Field

pNetworkAddress6 =

  renameField "NetworkAddress6" $

  optionalNEStringField "network6"

-- | Network gateway (IPv6 address). FIXME: no real type for this.

pNetworkGateway6 :: Field

pNetworkGateway6 =

  renameField "NetworkGateway6" $

  optionalNEStringField "gateway6"

-- | Network specific mac prefix (that overrides the cluster one).

pNetworkMacPrefix :: Field

pNetworkMacPrefix =

  renameField "NetMacPrefix" $

  optionalNEStringField "mac_prefix"

-- | Network add reserved IPs.

pNetworkAddRsvdIps :: Field

pNetworkAddRsvdIps =

  renameField "NetworkAddRsvdIps" .

  optionalField $

  simpleField "add_reserved_ips" [t| [NonEmptyString] |]

-- | Network remove reserved IPs.

pNetworkRemoveRsvdIps :: Field

pNetworkRemoveRsvdIps =

  renameField "NetworkRemoveRsvdIps" .

  optionalField $

  simpleField "remove_reserved_ips" [t| [NonEmptyString] |]

-- | Network mode when connecting to a group.

pNetworkMode :: Field

pNetworkMode = simpleField "network_mode" [t| NICMode |]

-- | Network link when connecting to a group.

pNetworkLink :: Field

pNetworkLink = simpleField "network_link" [t| NonEmptyString |]

-- * Common opcode parameters

-- | Run checks only, don't execute.

pDryRun :: Field

pDryRun = optionalField $ booleanField "dry_run"

-- | Debug level.

pDebugLevel :: Field

pDebugLevel = optionalField $ simpleField "debug_level" [t| NonNegative Int |]

-- | Opcode priority. Note: python uses a separate constant, we're

-- using the actual value we know it's the default.

pOpPriority :: Field

pOpPriority =

  defaultField [| OpPrioNormal |] $

  simpleField "priority" [t| OpSubmitPriority |]

-- | Job dependencies.

pDependencies :: Field

pDependencies =

  optionalNullSerField $ simpleField "depends" [t| [JobDependency] |]

-- | Comment field.

pComment :: Field

pComment = optionalNullSerField $ stringField "comment"

-- | Reason trail field.

pReason :: Field

pReason = simpleField C.opcodeReason [t| ReasonTrail |]

-- * Entire opcode parameter list

-- | Old-style query opcode, with locking.

dOldQuery :: [Field]

dOldQuery =

  [ pOutputFields

  , pNames

  , pUseLocking

  ]

-- | Old-style query opcode, without locking.

dOldQueryNoLocking :: [Field]

dOldQueryNoLocking =

  [ pOutputFields

  , pNames

  ]