Safe Haskell	Safe-Inferred
Language	Haskell2010

Ganeti.Locking.Locks

Description

Ganeti lock structure

Synopsis

data GanetiLocks
- = ClusterLockSet
- | BGL
- | InstanceLockSet
- | Instance String
- | NodeGroupLockSet
- | NodeGroup String
- | NodeLockSet
- | Node String
- | NodeResLockSet
- | NodeRes String
- | NetworkLockSet
- | Network String
- | ConfigLock
lockName :: GanetiLocks -> String
data ClientType
- = ClientOther String
- | ClientJob JobId
data ClientId = ClientId {
- ciIdentifier :: ClientType
- ciLockFile :: FilePath
- ciPid :: ProcessID
}
type GanetiLockWaiting = LockWaiting GanetiLocks ClientId Integer
data LockLevel
- = LevelCluster
- | LevelInstance
- | LevelNodeGroup
- | LevelNode
- | LevelNodeRes
- | LevelNetwork
- | LevelConfig
lockLevel :: GanetiLocks -> LockLevel

Documentation

data GanetiLocks #

The type of Locks available in Ganeti. The order of this type is the lock oder.

Constructors

ClusterLockSet
BGL
InstanceLockSet
Instance String
NodeGroupLockSet
NodeGroup String
NodeLockSet
Node String
NodeResLockSet
NodeRes String
NetworkLockSet
Network String
ConfigLock	A lock used for a transitional period when WConfd keeps the state of the configuration, but all the operations are still performed on the Python side.

Instances

Instances details

Show GanetiLocks #
Instance details Defined in Ganeti.Locking.Locks Methods showsPrec :: Int -> GanetiLocks -> ShowS show :: GanetiLocks -> String showList :: [GanetiLocks] -> ShowS
Lock GanetiLocks #
Instance details Defined in Ganeti.Locking.Locks Methods lockImplications :: GanetiLocks -> [GanetiLocks] #
Eq GanetiLocks #
Instance details Defined in Ganeti.Locking.Locks Methods (==) :: GanetiLocks -> GanetiLocks -> Bool (/=) :: GanetiLocks -> GanetiLocks -> Bool
Ord GanetiLocks #
Instance details Defined in Ganeti.Locking.Locks Methods compare :: GanetiLocks -> GanetiLocks -> Ordering (<) :: GanetiLocks -> GanetiLocks -> Bool (<=) :: GanetiLocks -> GanetiLocks -> Bool (>) :: GanetiLocks -> GanetiLocks -> Bool (>=) :: GanetiLocks -> GanetiLocks -> Bool max :: GanetiLocks -> GanetiLocks -> GanetiLocks min :: GanetiLocks -> GanetiLocks -> GanetiLocks
JSON GanetiLocks #
Instance details Defined in Ganeti.Locking.Locks Methods readJSON :: JSValue -> Result GanetiLocks showJSON :: GanetiLocks -> JSValue readJSONs :: JSValue -> Result [GanetiLocks] showJSONs :: [GanetiLocks] -> JSValue

lockName :: GanetiLocks -> String #

Provide the String representation of a lock

data ClientType #

Type of entities capable of owning locks. Usually, locks are owned by jobs. However, occassionally other tasks need locks (currently, e.g., to lock the configuration). These are identified by a unique name, reported to WConfD as a strig.

Constructors

ClientOther String
ClientJob JobId

Instances

Instances details

Show ClientType #
Instance details Defined in Ganeti.Locking.Locks Methods showsPrec :: Int -> ClientType -> ShowS show :: ClientType -> String showList :: [ClientType] -> ShowS
Eq ClientType #
Instance details Defined in Ganeti.Locking.Locks Methods (==) :: ClientType -> ClientType -> Bool (/=) :: ClientType -> ClientType -> Bool
Ord ClientType #
Instance details Defined in Ganeti.Locking.Locks Methods compare :: ClientType -> ClientType -> Ordering (<) :: ClientType -> ClientType -> Bool (<=) :: ClientType -> ClientType -> Bool (>) :: ClientType -> ClientType -> Bool (>=) :: ClientType -> ClientType -> Bool max :: ClientType -> ClientType -> ClientType min :: ClientType -> ClientType -> ClientType
JSON ClientType #
Instance details Defined in Ganeti.Locking.Locks Methods readJSON :: JSValue -> Result ClientType showJSON :: ClientType -> JSValue readJSONs :: JSValue -> Result [ClientType] showJSONs :: [ClientType] -> JSValue

data ClientId #

A client is identified as a job id, thread id, a path to its process identifier file, and its process id.

The JobId isn't enough to identify a client as the master daemon also handles client calls that aren't jobs, but which use the configuration. These taks are identified by a unique name, reported to WConfD as a string.

Constructors

ClientId
Fields ciIdentifier :: ClientType ciLockFile :: FilePath ciPid :: ProcessID

Instances

Instances details

Show ClientId #
Instance details Defined in Ganeti.Locking.Locks Methods showsPrec :: Int -> ClientId -> ShowS show :: ClientId -> String showList :: [ClientId] -> ShowS
Eq ClientId #
Instance details Defined in Ganeti.Locking.Locks Methods (==) :: ClientId -> ClientId -> Bool (/=) :: ClientId -> ClientId -> Bool
Ord ClientId #
Instance details Defined in Ganeti.Locking.Locks Methods compare :: ClientId -> ClientId -> Ordering (<) :: ClientId -> ClientId -> Bool (<=) :: ClientId -> ClientId -> Bool (>) :: ClientId -> ClientId -> Bool (>=) :: ClientId -> ClientId -> Bool max :: ClientId -> ClientId -> ClientId min :: ClientId -> ClientId -> ClientId
JSON ClientId #
Instance details Defined in Ganeti.Locking.Locks Methods readJSON :: JSValue -> Result ClientId showJSON :: ClientId -> JSValue readJSONs :: JSValue -> Result [ClientId] showJSONs :: [ClientId] -> JSValue

type GanetiLockWaiting = LockWaiting GanetiLocks ClientId Integer #

The type of lock Allocations in Ganeti. In Ganeti, the owner of locks are jobs.

data LockLevel #

The levels, the locks belong to.

Constructors

LevelCluster
LevelInstance
LevelNodeGroup
LevelNode
LevelNodeRes
LevelNetwork
LevelConfig	A transitional level for internal configuration locks

Instances

Instances details

Enum LockLevel #
Instance details Defined in Ganeti.Locking.Locks Methods succ :: LockLevel -> LockLevel pred :: LockLevel -> LockLevel toEnum :: Int -> LockLevel fromEnum :: LockLevel -> Int enumFrom :: LockLevel -> [LockLevel] enumFromThen :: LockLevel -> LockLevel -> [LockLevel] enumFromTo :: LockLevel -> LockLevel -> [LockLevel] enumFromThenTo :: LockLevel -> LockLevel -> LockLevel -> [LockLevel]
Show LockLevel #
Instance details Defined in Ganeti.Locking.Locks Methods showsPrec :: Int -> LockLevel -> ShowS show :: LockLevel -> String showList :: [LockLevel] -> ShowS
Eq LockLevel #
Instance details Defined in Ganeti.Locking.Locks Methods (==) :: LockLevel -> LockLevel -> Bool (/=) :: LockLevel -> LockLevel -> Bool
JSON LockLevel #
Instance details Defined in Ganeti.Locking.Locks Methods readJSON :: JSValue -> Result LockLevel showJSON :: LockLevel -> JSValue readJSONs :: JSValue -> Result [LockLevel] showJSONs :: [LockLevel] -> JSValue

lockLevel :: GanetiLocks -> LockLevel #

For a lock, provide its level.