Safe Haskell	None

Ganeti.HTools.Types

Description

Some common types.

Synopsis

Documentation

type Idx = IntSource

The instance index type.

type Ndx = IntSource

The node index type.

type Gdx = IntSource

The group index type.

type NameAssoc = Map String IntSource

The type used to hold name-to-idx mappings.

type Score = DoubleSource

A separate name for the cluster score type.

type Weight = DoubleSource

A separate name for a weight metric.

type GroupID = StringSource

The Group UUID type.

defaultGroupID :: GroupID Source

Default group UUID (just a string, not a real UUID).

data MirrorType Source

Mirroring type.

Constructors

MirrorNone	No mirroring/movability
MirrorInternal	DRBD-type mirroring
MirrorExternal	Shared-storage type mirroring

Instances

Eq MirrorType
Show MirrorType

templateMirrorType :: DiskTemplate -> MirrorType Source

Correspondence between disk template and mirror type.

data RSpec Source

The resource spec type.

Constructors

RSpec
Fields rspecCpu :: Int Requested VCPUs rspecMem :: Int Requested memory rspecDsk :: Int Requested disk rspecSpn :: Int Requested spindles

Instances

Eq RSpec
Show RSpec

data AllocInfo Source

Allocation stats type. This is used instead of RSpec (which was used at first), because we need to track more stats. The actual data can refer either to allocated, or available, etc. values depending on the context. See also computeAllocationDelta.

Constructors

AllocInfo
Fields allocInfoVCpus :: Int VCPUs allocInfoNCpus :: Double Normalised CPUs allocInfoMem :: Int Memory allocInfoDisk :: Int Disk allocInfoSpn :: Int Spindles

Instances

Eq AllocInfo
Show AllocInfo

type AllocStats = (AllocInfo, AllocInfo, AllocInfo)Source

Currently used, possibly to allocate, unallocable.

type NetworkID = StringSource

The network UUID type.

data ISpec Source

Instance specification type.

Constructors

ISpec
Fields iSpecMemorySize :: Int iSpecCpuCount :: Int iSpecDiskSize :: Int iSpecDiskCount :: Int iSpecNicCount :: Int iSpecSpindleUse :: Int

Instances

Eq ISpec
Show ISpec
Arbitrary ISpec
JSON ISpec
ArrayObject ISpec
DictObject ISpec

loadISpec :: JSValue -> Result ISpec Source

saveISpec :: ISpec -> JSValueSource

defMinISpec :: ISpec Source

The default minimum ispec.

defStdISpec :: ISpec Source

The default standard ispec.

maxDisks :: IntSource

maxNics :: IntSource

defMaxISpec :: ISpec Source

The default max ispec.

data MinMaxISpecs Source

Minimum and maximum instance specs type.

Constructors

MinMaxISpecs
Fields minMaxISpecsMinSpec :: ISpec minMaxISpecsMaxSpec :: ISpec

Instances

Eq MinMaxISpecs
Show MinMaxISpecs
Arbitrary MinMaxISpecs
JSON MinMaxISpecs
ArrayObject MinMaxISpecs
DictObject MinMaxISpecs

loadMinMaxISpecs :: JSValue -> Result MinMaxISpecs Source

saveMinMaxISpecs :: MinMaxISpecs -> JSValueSource

defMinMaxISpecs :: [MinMaxISpecs]Source

data IPolicy Source

Instance policy type.

Constructors

IPolicy
Fields iPolicyMinMaxISpecs :: [MinMaxISpecs] iPolicyStdSpec :: ISpec iPolicyDiskTemplates :: [DiskTemplate] iPolicyVcpuRatio :: Double iPolicySpindleRatio :: Double

Instances

Eq IPolicy
Show IPolicy
Arbitrary IPolicy
JSON IPolicy
ArrayObject IPolicy
DictObject IPolicy

loadIPolicy :: JSValue -> Result IPolicy Source

saveIPolicy :: IPolicy -> JSValueSource

rspecFromISpec :: ISpec -> RSpec Source

Converts an ISpec type to a RSpec one.

defIPolicy :: IPolicy Source

The default instance policy.

data DynUtil Source

The dynamic resource specs of a machine (i.e. load or load capacity, as opposed to size).

Constructors

DynUtil
Fields cpuWeight :: Weight Standardised CPU usage memWeight :: Weight Standardised memory load dskWeight :: Weight Standardised disk I/O usage netWeight :: Weight Standardised network usage

Instances

Eq DynUtil
Show DynUtil

zeroUtil :: DynUtil Source

Initial empty utilisation.

baseUtil :: DynUtil Source

Base utilisation (used when no actual utilisation data is supplied).

addUtil :: DynUtil -> DynUtil -> DynUtil Source

Sum two utilisation records.

subUtil :: DynUtil -> DynUtil -> DynUtil Source

Substracts one utilisation record from another.

type Placement = (Idx, Ndx, Ndx, IMove, Score)Source

The description of an instance placement. It contains the instance index, the new primary and secondary node, the move being performed and the score of the cluster after the move.

data IMove Source

An instance move definition.

Constructors

Failover	Failover the instance (f)
FailoverToAny Ndx	Failover to a random node (fa:np), for shared storage
ReplacePrimary Ndx	Replace primary (f, r:np, f)
ReplaceSecondary Ndx	Replace secondary (r:ns)
ReplaceAndFailover Ndx	Replace secondary, failover (r:np, f)
FailoverAndReplace Ndx	Failover, replace secondary (f, r:ns)

Instances

Show IMove

type MoveJob = ([Ndx], Idx, IMove, [String])Source

Formatted solution output for one move (involved nodes and commands.

unknownField :: StringSource

Unknown field in table output.

type JobSet = [MoveJob]Source

A list of command elements.

defReservedDiskRatio :: DoubleSource

Default max disk usage ratio.

unitMem :: IntSource

Base memory unit.

unitDsk :: IntSource

Base disk unit.

unitCpu :: IntSource

Base vcpus unit.

unitSpindle :: IntSource

Base spindles unit.

data FailMode Source

Reason for an operation's falure.

Constructors

FailMem	Failed due to not enough RAM
FailDisk	Failed due to not enough disk
FailCPU	Failed due to not enough CPU capacity
FailN1	Failed due to not passing N1 checks
FailTags	Failed due to tag exclusion
FailMig	Failed due to migration restrictions
FailDiskCount	Failed due to wrong number of disks
FailSpindles	Failed due to wrong/missing spindles
FailInternal	Internal error

Instances

Bounded FailMode
Enum FailMode
Eq FailMode
Show FailMode
Arbitrary FailMode
Error FailMode	`Error` instance for `FailMode` designed to catch unintended use as a general monad.
Arbitrary a => Arbitrary (OpResult a)

type FailStats = [(FailMode, Int)]Source

List with failure statistics.

type OpResult = GenericResult FailMode Source

Either-like data-type customized for our failure modes.

The failure values for this monad track the specific allocation failures, so this is not a general error-monad (compare with the Result data type). One downside is that this type cannot encode a generic failure mode, hence our way to build a FailMode from string will instead raise an exception.

opToResult :: OpResult a -> Result aSource

Conversion from OpResult to Result.

class Element a whereSource

A generic class for items that have updateable names and indices.

Methods

nameOf :: a -> StringSource

Returns the name of the element

allNames :: a -> [String]Source

Returns all the known names of the element

idxOf :: a -> IntSource

Returns the index of the element

setAlias :: a -> String -> aSource

Updates the alias of the element

computeAlias :: String -> a -> aSource

Compute the alias by stripping a given suffix (domain) from the name

setIdx :: a -> Int -> aSource

Updates the index of the element

Instances

Element Group
Element Instance
Element Node

data AutoRepairType Source

The repair modes for the auto-repair tool.

Constructors

ArFixStorage
ArMigrate
ArFailover
ArReinstall

Instances

Bounded AutoRepairType
Enum AutoRepairType
Eq AutoRepairType
Ord AutoRepairType
Show AutoRepairType

autoRepairTypeFromRaw :: forall m. Monad m => String -> m AutoRepairType Source

autoRepairTypeToRaw :: AutoRepairType -> StringSource

data AutoRepairResult Source

The possible auto-repair results.

Constructors

ArEnoperm
ArSuccess
ArFailure

Instances

Bounded AutoRepairResult
Enum AutoRepairResult
Eq AutoRepairResult
Ord AutoRepairResult
Show AutoRepairResult

autoRepairResultFromRaw :: forall m. Monad m => String -> m AutoRepairResult Source

autoRepairResultToRaw :: AutoRepairResult -> StringSource

data AutoRepairPolicy Source

The possible auto-repair policy for a given instance.

Constructors

ArEnabled AutoRepairType	Auto-repair explicitly enabled
ArSuspended AutoRepairSuspendTime	Suspended temporarily, or forever
ArNotEnabled	Auto-repair not explicitly enabled

Instances

Eq AutoRepairPolicy
Show AutoRepairPolicy

data AutoRepairSuspendTime Source

The suspend timeout for ArSuspended.

Constructors

Forever	Permanently suspended
Until ClockTime	Suspended up to a certain time

Instances

Eq AutoRepairSuspendTime
Show AutoRepairSuspendTime

data AutoRepairStatus Source

The possible auto-repair states for any given instance.

Constructors

ArHealthy (Maybe AutoRepairData)	No problems detected with the instance
ArNeedsRepair AutoRepairData	Instance has problems, no action taken
ArPendingRepair AutoRepairData	Repair jobs ongoing for the instance
ArFailedRepair AutoRepairData	Some repair jobs for the instance failed

Instances

Eq AutoRepairStatus
Show AutoRepairStatus

data AutoRepairData Source

The data accompanying a repair operation (future, pending, or failed).

Constructors

AutoRepairData
Fields arType :: AutoRepairType arUuid :: String arTime :: ClockTime arJobs :: [JobId] arResult :: Maybe AutoRepairResult arTag :: String

Instances

Eq AutoRepairData
Show AutoRepairData