-- ** Finalization after data loading
, buildPeers
, setIdx
- , setName
+ , setAlias
, setOffline
, setXmem
, setFmem
, setSec
, setMdsk
, setMcpu
+ -- * Tag maps
+ , addTags
+ , delTags
+ , rejectAddTags
-- * Instance (re)location
, removePri
, removeSec
, addSec
-- * Stats
, availDisk
+ , availMem
+ , availCpu
+ , conflictingPrimaries
-- * Formatting
, defaultFields
, showHeader
, list
-- * Misc stuff
, AssocList
+ , AllocElement
, noSecondary
) where
import Data.List
import qualified Data.Map as Map
+import qualified Data.Foldable as Foldable
import Text.Printf (printf)
import qualified Ganeti.HTools.Container as Container
-- | The node type.
data Node = Node
{ name :: String -- ^ The node name
+ , alias :: String -- ^ The shortened name (for display purposes)
, tMem :: Double -- ^ Total memory (MiB)
, nMem :: Int -- ^ Node memory (MiB)
, fMem :: Int -- ^ Free memory (MiB)
instance T.Element Node where
nameOf = name
idxOf = idx
- setName = setName
+ setAlias = setAlias
setIdx = setIdx
+ allNames n = [name n, alias n]
-- | A simple name for the int, node association list.
type AssocList = [(T.Ndx, Node)]
-- | A simple name for a node map.
type List = Container.Container Node
+-- | A simple name for an allocation element (here just for logistic
+-- reasons)
+type AllocElement = (List, Instance.Instance, [Node])
+
-- | Constant node index for a non-moveable instance.
noSecondary :: T.Ndx
noSecondary = -1
--- | No limit value
-noLimit :: Double
-noLimit = -1
-
--- | No limit int value
-noLimitInt :: Int
-noLimitInt = -1
-
-- * Helper functions
-- | Add a tag to a tagmap
-- | Check if we can add a list of tags to a tagmap
rejectAddTags :: TagMap -> [String] -> Bool
-rejectAddTags t = any (flip Map.member t)
+rejectAddTags t = any (`Map.member` t)
+
+-- | Check how many primary instances have conflicting tags. The
+-- algorithm to compute this is to sum the count of all tags, then
+-- subtract the size of the tag map (since each tag has at least one,
+-- non-conflicting instance); this is equivalent to summing the
+-- values in the tag map minus one.
+conflictingPrimaries :: Node -> Int
+conflictingPrimaries (Node { pTags = t }) = Foldable.sum t - Map.size t
-- * Initialization functions
-> Int -> Double -> Bool -> Node
create name_init mem_t_init mem_n_init mem_f_init
dsk_t_init dsk_f_init cpu_t_init offline_init =
- Node { name = name_init
+ Node { name = name_init
+ , alias = name_init
, tMem = mem_t_init
, nMem = mem_n_init
, fMem = mem_f_init
, pCpu = 0
, offline = offline_init
, xMem = 0
- , mDsk = noLimit
- , mCpu = noLimit
- , loDsk = noLimitInt
- , hiCpu = noLimitInt
+ , mDsk = T.defReservedDiskRatio
+ , mCpu = T.defVcpuRatio
+ , loDsk = mDskToloDsk T.defReservedDiskRatio dsk_t_init
+ , hiCpu = mCpuTohiCpu T.defVcpuRatio cpu_t_init
, utilPool = T.baseUtil
, utilLoad = T.zeroUtil
, pTags = Map.empty
}
+-- | Conversion formula from mDsk\/tDsk to loDsk
+mDskToloDsk :: Double -> Double -> Int
+mDskToloDsk mval tdsk = floor (mval * tdsk)
+
+-- | Conversion formula from mCpu\/tCpu to hiCpu
+mCpuTohiCpu :: Double -> Double -> Int
+mCpuTohiCpu mval tcpu = floor (mval * tcpu)
+
-- | Changes the index.
--
-- This is used only during the building of the data structures.
setIdx :: Node -> T.Ndx -> Node
setIdx t i = t {idx = i}
--- | Changes the name.
+-- | Changes the alias.
--
-- This is used only during the building of the data structures.
-setName :: Node -> String -> Node
-setName t s = t {name = s}
+setAlias :: Node -> String -> Node
+setAlias t s = t { alias = s }
-- | Sets the offline attribute.
setOffline :: Node -> Bool -> Node
-- | Sets the max disk usage ratio
setMdsk :: Node -> Double -> Node
-setMdsk t val = t { mDsk = val,
- loDsk = if val == noLimit
- then noLimitInt
- else floor (val * tDsk t) }
+setMdsk t val = t { mDsk = val, loDsk = mDskToloDsk val (tDsk t) }
-- | Sets the max cpu usage ratio
setMcpu :: Node -> Double -> Node
-setMcpu t val = t { mCpu = val, hiCpu = floor (val * tCpu t) }
+setMcpu t val = t { mCpu = val, hiCpu = mCpuTohiCpu val (tCpu t) }
-- | Computes the maximum reserved memory for peers from a peer map.
computeMaxRes :: P.PeerMap -> P.Elem
new_load = utilLoad t `T.addUtil` Instance.util inst
inst_tags = Instance.tags inst
old_tags = pTags t
- in if new_mem <= 0 then T.OpFail T.FailMem
- else if new_dsk <= 0 || mDsk t > new_dp then T.OpFail T.FailDisk
- else if new_failn1 && not (failN1 t) then T.OpFail T.FailMem
- else if l_cpu >= 0 && l_cpu < new_pcpu then T.OpFail T.FailCPU
- else if rejectAddTags old_tags inst_tags
- then T.OpFail T.FailTags
- else
- let new_plist = iname:pList t
- new_mp = fromIntegral new_mem / tMem t
- r = t { pList = new_plist, fMem = new_mem, fDsk = new_dsk
- , failN1 = new_failn1, pMem = new_mp, pDsk = new_dp
- , uCpu = new_ucpu, pCpu = new_pcpu, utilLoad = new_load
- , pTags = addTags old_tags inst_tags }
- in T.OpGood r
+ in case () of
+ _ | new_mem <= 0 -> T.OpFail T.FailMem
+ | new_dsk <= 0 || mDsk t > new_dp -> T.OpFail T.FailDisk
+ | new_failn1 && not (failN1 t) -> T.OpFail T.FailMem
+ | l_cpu >= 0 && l_cpu < new_pcpu -> T.OpFail T.FailCPU
+ | rejectAddTags old_tags inst_tags -> T.OpFail T.FailTags
+ | otherwise ->
+ let new_plist = iname:pList t
+ new_mp = fromIntegral new_mem / tMem t
+ r = t { pList = new_plist, fMem = new_mem, fDsk = new_dsk
+ , failN1 = new_failn1, pMem = new_mp, pDsk = new_dp
+ , uCpu = new_ucpu, pCpu = new_pcpu
+ , utilLoad = new_load
+ , pTags = addTags old_tags inst_tags }
+ in T.OpGood r
-- | Adds a secondary instance.
addSec :: Node -> Instance.Instance -> T.Ndx -> T.OpResult Node
old_load = utilLoad t
new_load = old_load { T.dskWeight = T.dskWeight old_load +
T.dskWeight (Instance.util inst) }
- in if new_dsk <= 0 || mDsk t > new_dp then T.OpFail T.FailDisk
- else if new_failn1 && not (failN1 t) then T.OpFail T.FailMem
- else let new_slist = iname:sList t
- r = t { sList = new_slist, fDsk = new_dsk
- , peers = new_peers, failN1 = new_failn1
- , rMem = new_rmem, pDsk = new_dp
- , pRem = new_prem, utilLoad = new_load }
- in T.OpGood r
+ in case () of
+ _ | new_dsk <= 0 || mDsk t > new_dp -> T.OpFail T.FailDisk
+ | Instance.mem inst >= old_mem -> T.OpFail T.FailMem
+ | new_failn1 && not (failN1 t) -> T.OpFail T.FailMem
+ | otherwise ->
+ let new_slist = iname:sList t
+ r = t { sList = new_slist, fDsk = new_dsk
+ , peers = new_peers, failN1 = new_failn1
+ , rMem = new_rmem, pDsk = new_dp
+ , pRem = new_prem, utilLoad = new_load }
+ in T.OpGood r
-- * Stats functions
availDisk t =
let _f = fDsk t
_l = loDsk t
- in
- if _l == noLimitInt
- then _f
- else if _f < _l
- then 0
- else _f - _l
+ in if _f < _l
+ then 0
+ else _f - _l
+
+-- | Computes the amount of available memory on a given node
+availMem :: Node -> Int
+availMem t =
+ let _f = fMem t
+ _l = rMem t
+ in if _f < _l
+ then 0
+ else _f - _l
+
+-- | Computes the amount of available memory on a given node
+availCpu :: Node -> Int
+availCpu t =
+ let _u = uCpu t
+ _l = hiCpu t
+ in if _l >= _u
+ then _l - _u
+ else 0
-- * Display functions
showField :: Node -> String -> String
showField t field =
case field of
- "name" -> name t
+ "name" -> alias t
+ "fqdn" -> name t
"status" -> if offline t then "-"
else if failN1 t then "*" else " "
"tmem" -> printf "%5.0f" $ tMem t
"nload" -> printf "%5.3f" uN
"ptags" -> intercalate "," . map (\(k, v) -> printf "%s=%d" k v) .
Map.toList $ pTags t
- _ -> printf "<unknown field>"
+ _ -> T.unknownField
where
T.DynUtil { T.cpuWeight = uC, T.memWeight = uM,
T.dskWeight = uD, T.netWeight = uN } = utilLoad t
showHeader field =
case field of
"name" -> ("Name", False)
+ "fqdn" -> ("Name", False)
"status" -> ("F", False)
"tmem" -> ("t_mem", True)
"nmem" -> ("n_mem", True)
"dload" -> ("lDsk", True)
"nload" -> ("lNet", True)
"ptags" -> ("PrimaryTags", False)
- _ -> ("<unknown field>", False)
+ _ -> (T.unknownField, False)
-- | String converter for the node list functionality.
list :: [String] -> Node -> [String]
projects / ganeti-local / blobdiff