root / htools / Ganeti / HTools / Node.hs @ 37904802
History | View | Annotate | Download (22.6 kB)
1 |
{-| Module describing a node. |
---|---|
2 |
|
3 |
All updates are functional (copy-based) and return a new node with |
4 |
updated value. |
5 |
-} |
6 |
|
7 |
{- |
8 |
|
9 |
Copyright (C) 2009, 2010, 2011, 2012 Google Inc. |
10 |
|
11 |
This program is free software; you can redistribute it and/or modify |
12 |
it under the terms of the GNU General Public License as published by |
13 |
the Free Software Foundation; either version 2 of the License, or |
14 |
(at your option) any later version. |
15 |
|
16 |
This program is distributed in the hope that it will be useful, but |
17 |
WITHOUT ANY WARRANTY; without even the implied warranty of |
18 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
19 |
General Public License for more details. |
20 |
|
21 |
You should have received a copy of the GNU General Public License |
22 |
along with this program; if not, write to the Free Software |
23 |
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
24 |
02110-1301, USA. |
25 |
|
26 |
-} |
27 |
|
28 |
module Ganeti.HTools.Node |
29 |
( Node(..) |
30 |
, List |
31 |
-- * Constructor |
32 |
, create |
33 |
-- ** Finalization after data loading |
34 |
, buildPeers |
35 |
, setIdx |
36 |
, setAlias |
37 |
, setOffline |
38 |
, setXmem |
39 |
, setFmem |
40 |
, setPri |
41 |
, setSec |
42 |
, setMdsk |
43 |
, setMcpu |
44 |
, setPolicy |
45 |
-- * Tag maps |
46 |
, addTags |
47 |
, delTags |
48 |
, rejectAddTags |
49 |
-- * Instance (re)location |
50 |
, removePri |
51 |
, removeSec |
52 |
, addPri |
53 |
, addPriEx |
54 |
, addSec |
55 |
, addSecEx |
56 |
-- * Stats |
57 |
, availDisk |
58 |
, availMem |
59 |
, availCpu |
60 |
, iMem |
61 |
, iDsk |
62 |
, conflictingPrimaries |
63 |
-- * Formatting |
64 |
, defaultFields |
65 |
, showHeader |
66 |
, showField |
67 |
, list |
68 |
-- * Misc stuff |
69 |
, AssocList |
70 |
, AllocElement |
71 |
, noSecondary |
72 |
, computeGroups |
73 |
) where |
74 |
|
75 |
import Data.List hiding (group) |
76 |
import qualified Data.Map as Map |
77 |
import qualified Data.Foldable as Foldable |
78 |
import Data.Ord (comparing) |
79 |
import Text.Printf (printf) |
80 |
|
81 |
import qualified Ganeti.HTools.Container as Container |
82 |
import qualified Ganeti.HTools.Instance as Instance |
83 |
import qualified Ganeti.HTools.PeerMap as P |
84 |
|
85 |
import Ganeti.BasicTypes |
86 |
import qualified Ganeti.HTools.Types as T |
87 |
|
88 |
-- * Type declarations |
89 |
|
90 |
-- | The tag map type. |
91 |
type TagMap = Map.Map String Int |
92 |
|
93 |
-- | The node type. |
94 |
data Node = Node |
95 |
{ name :: String -- ^ The node name |
96 |
, alias :: String -- ^ The shortened name (for display purposes) |
97 |
, tMem :: Double -- ^ Total memory (MiB) |
98 |
, nMem :: Int -- ^ Node memory (MiB) |
99 |
, fMem :: Int -- ^ Free memory (MiB) |
100 |
, xMem :: Int -- ^ Unaccounted memory (MiB) |
101 |
, tDsk :: Double -- ^ Total disk space (MiB) |
102 |
, fDsk :: Int -- ^ Free disk space (MiB) |
103 |
, tCpu :: Double -- ^ Total CPU count |
104 |
, uCpu :: Int -- ^ Used VCPU count |
105 |
, spindleCount :: Int -- ^ Node spindles (spindle_count node parameter) |
106 |
, pList :: [T.Idx] -- ^ List of primary instance indices |
107 |
, sList :: [T.Idx] -- ^ List of secondary instance indices |
108 |
, idx :: T.Ndx -- ^ Internal index for book-keeping |
109 |
, peers :: P.PeerMap -- ^ Pnode to instance mapping |
110 |
, failN1 :: Bool -- ^ Whether the node has failed n1 |
111 |
, rMem :: Int -- ^ Maximum memory needed for failover by |
112 |
-- primaries of this node |
113 |
, pMem :: Double -- ^ Percent of free memory |
114 |
, pDsk :: Double -- ^ Percent of free disk |
115 |
, pRem :: Double -- ^ Percent of reserved memory |
116 |
, pCpu :: Double -- ^ Ratio of virtual to physical CPUs |
117 |
, mDsk :: Double -- ^ Minimum free disk ratio |
118 |
, loDsk :: Int -- ^ Autocomputed from mDsk low disk |
119 |
-- threshold |
120 |
, hiCpu :: Int -- ^ Autocomputed from mCpu high cpu |
121 |
-- threshold |
122 |
, hiSpindles :: Double -- ^ Auto-computed from policy spindle_ratio |
123 |
-- and the node spindle count |
124 |
, instSpindles :: Double -- ^ Spindles used by instances |
125 |
, offline :: Bool -- ^ Whether the node should not be used for |
126 |
-- allocations and skipped from score |
127 |
-- computations |
128 |
, utilPool :: T.DynUtil -- ^ Total utilisation capacity |
129 |
, utilLoad :: T.DynUtil -- ^ Sum of instance utilisation |
130 |
, pTags :: TagMap -- ^ Primary instance exclusion tags and their count |
131 |
, group :: T.Gdx -- ^ The node's group (index) |
132 |
, iPolicy :: T.IPolicy -- ^ The instance policy (of the node's group) |
133 |
} deriving (Show, Read, Eq) |
134 |
|
135 |
instance T.Element Node where |
136 |
nameOf = name |
137 |
idxOf = idx |
138 |
setAlias = setAlias |
139 |
setIdx = setIdx |
140 |
allNames n = [name n, alias n] |
141 |
|
142 |
-- | A simple name for the int, node association list. |
143 |
type AssocList = [(T.Ndx, Node)] |
144 |
|
145 |
-- | A simple name for a node map. |
146 |
type List = Container.Container Node |
147 |
|
148 |
-- | A simple name for an allocation element (here just for logistic |
149 |
-- reasons). |
150 |
type AllocElement = (List, Instance.Instance, [Node], T.Score) |
151 |
|
152 |
-- | Constant node index for a non-moveable instance. |
153 |
noSecondary :: T.Ndx |
154 |
noSecondary = -1 |
155 |
|
156 |
-- * Helper functions |
157 |
|
158 |
-- | Add a tag to a tagmap. |
159 |
addTag :: TagMap -> String -> TagMap |
160 |
addTag t s = Map.insertWith (+) s 1 t |
161 |
|
162 |
-- | Add multiple tags. |
163 |
addTags :: TagMap -> [String] -> TagMap |
164 |
addTags = foldl' addTag |
165 |
|
166 |
-- | Adjust or delete a tag from a tagmap. |
167 |
delTag :: TagMap -> String -> TagMap |
168 |
delTag t s = Map.update (\v -> if v > 1 |
169 |
then Just (v-1) |
170 |
else Nothing) |
171 |
s t |
172 |
|
173 |
-- | Remove multiple tags. |
174 |
delTags :: TagMap -> [String] -> TagMap |
175 |
delTags = foldl' delTag |
176 |
|
177 |
-- | Check if we can add a list of tags to a tagmap. |
178 |
rejectAddTags :: TagMap -> [String] -> Bool |
179 |
rejectAddTags t = any (`Map.member` t) |
180 |
|
181 |
-- | Check how many primary instances have conflicting tags. The |
182 |
-- algorithm to compute this is to sum the count of all tags, then |
183 |
-- subtract the size of the tag map (since each tag has at least one, |
184 |
-- non-conflicting instance); this is equivalent to summing the |
185 |
-- values in the tag map minus one. |
186 |
conflictingPrimaries :: Node -> Int |
187 |
conflictingPrimaries (Node { pTags = t }) = Foldable.sum t - Map.size t |
188 |
|
189 |
-- | Helper function to increment a base value depending on the passed |
190 |
-- boolean argument. |
191 |
incIf :: (Num a) => Bool -> a -> a -> a |
192 |
incIf True base delta = base + delta |
193 |
incIf False base _ = base |
194 |
|
195 |
-- | Helper function to decrement a base value depending on the passed |
196 |
-- boolean argument. |
197 |
decIf :: (Num a) => Bool -> a -> a -> a |
198 |
decIf True base delta = base - delta |
199 |
decIf False base _ = base |
200 |
|
201 |
-- * Initialization functions |
202 |
|
203 |
-- | Create a new node. |
204 |
-- |
205 |
-- The index and the peers maps are empty, and will be need to be |
206 |
-- update later via the 'setIdx' and 'buildPeers' functions. |
207 |
create :: String -> Double -> Int -> Int -> Double |
208 |
-> Int -> Double -> Bool -> Int -> T.Gdx -> Node |
209 |
create name_init mem_t_init mem_n_init mem_f_init |
210 |
dsk_t_init dsk_f_init cpu_t_init offline_init spindles_init |
211 |
group_init = |
212 |
Node { name = name_init |
213 |
, alias = name_init |
214 |
, tMem = mem_t_init |
215 |
, nMem = mem_n_init |
216 |
, fMem = mem_f_init |
217 |
, tDsk = dsk_t_init |
218 |
, fDsk = dsk_f_init |
219 |
, tCpu = cpu_t_init |
220 |
, spindleCount = spindles_init |
221 |
, uCpu = 0 |
222 |
, pList = [] |
223 |
, sList = [] |
224 |
, failN1 = True |
225 |
, idx = -1 |
226 |
, peers = P.empty |
227 |
, rMem = 0 |
228 |
, pMem = fromIntegral mem_f_init / mem_t_init |
229 |
, pDsk = computePDsk dsk_f_init dsk_t_init |
230 |
, pRem = 0 |
231 |
, pCpu = 0 |
232 |
, offline = offline_init |
233 |
, xMem = 0 |
234 |
, mDsk = T.defReservedDiskRatio |
235 |
, loDsk = mDskToloDsk T.defReservedDiskRatio dsk_t_init |
236 |
, hiCpu = mCpuTohiCpu (T.iPolicyVcpuRatio T.defIPolicy) cpu_t_init |
237 |
, hiSpindles = computeHiSpindles (T.iPolicySpindleRatio T.defIPolicy) |
238 |
spindles_init |
239 |
, instSpindles = 0 |
240 |
, utilPool = T.baseUtil |
241 |
, utilLoad = T.zeroUtil |
242 |
, pTags = Map.empty |
243 |
, group = group_init |
244 |
, iPolicy = T.defIPolicy |
245 |
} |
246 |
|
247 |
-- | Conversion formula from mDsk\/tDsk to loDsk. |
248 |
mDskToloDsk :: Double -> Double -> Int |
249 |
mDskToloDsk mval = floor . (mval *) |
250 |
|
251 |
-- | Conversion formula from mCpu\/tCpu to hiCpu. |
252 |
mCpuTohiCpu :: Double -> Double -> Int |
253 |
mCpuTohiCpu mval = floor . (mval *) |
254 |
|
255 |
-- | Conversiojn formula from spindles and spindle ratio to hiSpindles. |
256 |
computeHiSpindles :: Double -> Int -> Double |
257 |
computeHiSpindles spindle_ratio = (spindle_ratio *) . fromIntegral |
258 |
|
259 |
-- | Changes the index. |
260 |
-- |
261 |
-- This is used only during the building of the data structures. |
262 |
setIdx :: Node -> T.Ndx -> Node |
263 |
setIdx t i = t {idx = i} |
264 |
|
265 |
-- | Changes the alias. |
266 |
-- |
267 |
-- This is used only during the building of the data structures. |
268 |
setAlias :: Node -> String -> Node |
269 |
setAlias t s = t { alias = s } |
270 |
|
271 |
-- | Sets the offline attribute. |
272 |
setOffline :: Node -> Bool -> Node |
273 |
setOffline t val = t { offline = val } |
274 |
|
275 |
-- | Sets the unnaccounted memory. |
276 |
setXmem :: Node -> Int -> Node |
277 |
setXmem t val = t { xMem = val } |
278 |
|
279 |
-- | Sets the max disk usage ratio. |
280 |
setMdsk :: Node -> Double -> Node |
281 |
setMdsk t val = t { mDsk = val, loDsk = mDskToloDsk val (tDsk t) } |
282 |
|
283 |
-- | Sets the max cpu usage ratio. This will update the node's |
284 |
-- ipolicy, losing sharing (but it should be a seldomly done operation). |
285 |
setMcpu :: Node -> Double -> Node |
286 |
setMcpu t val = |
287 |
let new_ipol = (iPolicy t) { T.iPolicyVcpuRatio = val } |
288 |
in t { hiCpu = mCpuTohiCpu val (tCpu t), iPolicy = new_ipol } |
289 |
|
290 |
-- | Sets the policy. |
291 |
setPolicy :: T.IPolicy -> Node -> Node |
292 |
setPolicy pol node = |
293 |
node { iPolicy = pol |
294 |
, hiCpu = mCpuTohiCpu (T.iPolicyVcpuRatio pol) (tCpu node) |
295 |
, hiSpindles = computeHiSpindles (T.iPolicySpindleRatio pol) |
296 |
(spindleCount node) |
297 |
} |
298 |
|
299 |
-- | Computes the maximum reserved memory for peers from a peer map. |
300 |
computeMaxRes :: P.PeerMap -> P.Elem |
301 |
computeMaxRes = P.maxElem |
302 |
|
303 |
-- | Builds the peer map for a given node. |
304 |
buildPeers :: Node -> Instance.List -> Node |
305 |
buildPeers t il = |
306 |
let mdata = map |
307 |
(\i_idx -> let inst = Container.find i_idx il |
308 |
mem = if Instance.usesSecMem inst |
309 |
then Instance.mem inst |
310 |
else 0 |
311 |
in (Instance.pNode inst, mem)) |
312 |
(sList t) |
313 |
pmap = P.accumArray (+) mdata |
314 |
new_rmem = computeMaxRes pmap |
315 |
new_failN1 = fMem t <= new_rmem |
316 |
new_prem = fromIntegral new_rmem / tMem t |
317 |
in t {peers=pmap, failN1 = new_failN1, rMem = new_rmem, pRem = new_prem} |
318 |
|
319 |
-- | Calculate the new spindle usage |
320 |
calcSpindleUse :: Node -> Instance.Instance -> Double |
321 |
calcSpindleUse n i = incIf (Instance.usesLocalStorage i) (instSpindles n) |
322 |
(fromIntegral $ Instance.spindleUse i) |
323 |
|
324 |
-- | Assigns an instance to a node as primary and update the used VCPU |
325 |
-- count, utilisation data and tags map. |
326 |
setPri :: Node -> Instance.Instance -> Node |
327 |
setPri t inst = t { pList = Instance.idx inst:pList t |
328 |
, uCpu = new_count |
329 |
, pCpu = fromIntegral new_count / tCpu t |
330 |
, utilLoad = utilLoad t `T.addUtil` Instance.util inst |
331 |
, pTags = addTags (pTags t) (Instance.exclTags inst) |
332 |
, instSpindles = calcSpindleUse t inst |
333 |
} |
334 |
where new_count = Instance.applyIfOnline inst (+ Instance.vcpus inst) |
335 |
(uCpu t ) |
336 |
|
337 |
-- | Assigns an instance to a node as secondary without other updates. |
338 |
setSec :: Node -> Instance.Instance -> Node |
339 |
setSec t inst = t { sList = Instance.idx inst:sList t |
340 |
, utilLoad = old_load { T.dskWeight = T.dskWeight old_load + |
341 |
T.dskWeight (Instance.util inst) } |
342 |
, instSpindles = calcSpindleUse t inst |
343 |
} |
344 |
where old_load = utilLoad t |
345 |
|
346 |
-- | Computes the new 'pDsk' value, handling nodes without local disk |
347 |
-- storage (we consider all their disk used). |
348 |
computePDsk :: Int -> Double -> Double |
349 |
computePDsk _ 0 = 1 |
350 |
computePDsk used total = fromIntegral used / total |
351 |
|
352 |
-- * Update functions |
353 |
|
354 |
-- | Sets the free memory. |
355 |
setFmem :: Node -> Int -> Node |
356 |
setFmem t new_mem = |
357 |
let new_n1 = new_mem < rMem t |
358 |
new_mp = fromIntegral new_mem / tMem t |
359 |
in t { fMem = new_mem, failN1 = new_n1, pMem = new_mp } |
360 |
|
361 |
-- | Removes a primary instance. |
362 |
removePri :: Node -> Instance.Instance -> Node |
363 |
removePri t inst = |
364 |
let iname = Instance.idx inst |
365 |
i_online = Instance.notOffline inst |
366 |
uses_disk = Instance.usesLocalStorage inst |
367 |
new_plist = delete iname (pList t) |
368 |
new_mem = incIf i_online (fMem t) (Instance.mem inst) |
369 |
new_dsk = incIf uses_disk (fDsk t) (Instance.dsk inst) |
370 |
new_spindles = decIf uses_disk (instSpindles t) 1 |
371 |
new_mp = fromIntegral new_mem / tMem t |
372 |
new_dp = computePDsk new_dsk (tDsk t) |
373 |
new_failn1 = new_mem <= rMem t |
374 |
new_ucpu = decIf i_online (uCpu t) (Instance.vcpus inst) |
375 |
new_rcpu = fromIntegral new_ucpu / tCpu t |
376 |
new_load = utilLoad t `T.subUtil` Instance.util inst |
377 |
in t { pList = new_plist, fMem = new_mem, fDsk = new_dsk |
378 |
, failN1 = new_failn1, pMem = new_mp, pDsk = new_dp |
379 |
, uCpu = new_ucpu, pCpu = new_rcpu, utilLoad = new_load |
380 |
, pTags = delTags (pTags t) (Instance.exclTags inst) |
381 |
, instSpindles = new_spindles |
382 |
} |
383 |
|
384 |
-- | Removes a secondary instance. |
385 |
removeSec :: Node -> Instance.Instance -> Node |
386 |
removeSec t inst = |
387 |
let iname = Instance.idx inst |
388 |
uses_disk = Instance.usesLocalStorage inst |
389 |
cur_dsk = fDsk t |
390 |
pnode = Instance.pNode inst |
391 |
new_slist = delete iname (sList t) |
392 |
new_dsk = incIf uses_disk cur_dsk (Instance.dsk inst) |
393 |
new_spindles = decIf uses_disk (instSpindles t) 1 |
394 |
old_peers = peers t |
395 |
old_peem = P.find pnode old_peers |
396 |
new_peem = decIf (Instance.usesSecMem inst) old_peem (Instance.mem inst) |
397 |
new_peers = if new_peem > 0 |
398 |
then P.add pnode new_peem old_peers |
399 |
else P.remove pnode old_peers |
400 |
old_rmem = rMem t |
401 |
new_rmem = if old_peem < old_rmem |
402 |
then old_rmem |
403 |
else computeMaxRes new_peers |
404 |
new_prem = fromIntegral new_rmem / tMem t |
405 |
new_failn1 = fMem t <= new_rmem |
406 |
new_dp = computePDsk new_dsk (tDsk t) |
407 |
old_load = utilLoad t |
408 |
new_load = old_load { T.dskWeight = T.dskWeight old_load - |
409 |
T.dskWeight (Instance.util inst) } |
410 |
in t { sList = new_slist, fDsk = new_dsk, peers = new_peers |
411 |
, failN1 = new_failn1, rMem = new_rmem, pDsk = new_dp |
412 |
, pRem = new_prem, utilLoad = new_load |
413 |
, instSpindles = new_spindles |
414 |
} |
415 |
|
416 |
-- | Adds a primary instance (basic version). |
417 |
addPri :: Node -> Instance.Instance -> T.OpResult Node |
418 |
addPri = addPriEx False |
419 |
|
420 |
-- | Adds a primary instance (extended version). |
421 |
addPriEx :: Bool -- ^ Whether to override the N+1 and |
422 |
-- other /soft/ checks, useful if we |
423 |
-- come from a worse status |
424 |
-- (e.g. offline) |
425 |
-> Node -- ^ The target node |
426 |
-> Instance.Instance -- ^ The instance to add |
427 |
-> T.OpResult Node -- ^ The result of the operation, |
428 |
-- either the new version of the node |
429 |
-- or a failure mode |
430 |
addPriEx force t inst = |
431 |
let iname = Instance.idx inst |
432 |
i_online = Instance.notOffline inst |
433 |
uses_disk = Instance.usesLocalStorage inst |
434 |
cur_dsk = fDsk t |
435 |
new_mem = decIf i_online (fMem t) (Instance.mem inst) |
436 |
new_dsk = decIf uses_disk cur_dsk (Instance.dsk inst) |
437 |
new_spindles = incIf uses_disk (instSpindles t) 1 |
438 |
new_failn1 = new_mem <= rMem t |
439 |
new_ucpu = incIf i_online (uCpu t) (Instance.vcpus inst) |
440 |
new_pcpu = fromIntegral new_ucpu / tCpu t |
441 |
new_dp = computePDsk new_dsk (tDsk t) |
442 |
l_cpu = T.iPolicyVcpuRatio $ iPolicy t |
443 |
new_load = utilLoad t `T.addUtil` Instance.util inst |
444 |
inst_tags = Instance.exclTags inst |
445 |
old_tags = pTags t |
446 |
strict = not force |
447 |
in case () of |
448 |
_ | new_mem <= 0 -> Bad T.FailMem |
449 |
| uses_disk && new_dsk <= 0 -> Bad T.FailDisk |
450 |
| uses_disk && mDsk t > new_dp && strict -> Bad T.FailDisk |
451 |
| uses_disk && new_spindles > hiSpindles t |
452 |
&& strict -> Bad T.FailDisk |
453 |
| new_failn1 && not (failN1 t) && strict -> Bad T.FailMem |
454 |
| l_cpu >= 0 && l_cpu < new_pcpu && strict -> Bad T.FailCPU |
455 |
| rejectAddTags old_tags inst_tags -> Bad T.FailTags |
456 |
| otherwise -> |
457 |
let new_plist = iname:pList t |
458 |
new_mp = fromIntegral new_mem / tMem t |
459 |
r = t { pList = new_plist, fMem = new_mem, fDsk = new_dsk |
460 |
, failN1 = new_failn1, pMem = new_mp, pDsk = new_dp |
461 |
, uCpu = new_ucpu, pCpu = new_pcpu |
462 |
, utilLoad = new_load |
463 |
, pTags = addTags old_tags inst_tags |
464 |
, instSpindles = new_spindles |
465 |
} |
466 |
in Ok r |
467 |
|
468 |
-- | Adds a secondary instance (basic version). |
469 |
addSec :: Node -> Instance.Instance -> T.Ndx -> T.OpResult Node |
470 |
addSec = addSecEx False |
471 |
|
472 |
-- | Adds a secondary instance (extended version). |
473 |
addSecEx :: Bool -> Node -> Instance.Instance -> T.Ndx -> T.OpResult Node |
474 |
addSecEx force t inst pdx = |
475 |
let iname = Instance.idx inst |
476 |
old_peers = peers t |
477 |
old_mem = fMem t |
478 |
new_dsk = fDsk t - Instance.dsk inst |
479 |
new_spindles = instSpindles t + 1 |
480 |
secondary_needed_mem = if Instance.usesSecMem inst |
481 |
then Instance.mem inst |
482 |
else 0 |
483 |
new_peem = P.find pdx old_peers + secondary_needed_mem |
484 |
new_peers = P.add pdx new_peem old_peers |
485 |
new_rmem = max (rMem t) new_peem |
486 |
new_prem = fromIntegral new_rmem / tMem t |
487 |
new_failn1 = old_mem <= new_rmem |
488 |
new_dp = computePDsk new_dsk (tDsk t) |
489 |
old_load = utilLoad t |
490 |
new_load = old_load { T.dskWeight = T.dskWeight old_load + |
491 |
T.dskWeight (Instance.util inst) } |
492 |
strict = not force |
493 |
in case () of |
494 |
_ | not (Instance.hasSecondary inst) -> Bad T.FailDisk |
495 |
| new_dsk <= 0 -> Bad T.FailDisk |
496 |
| mDsk t > new_dp && strict -> Bad T.FailDisk |
497 |
| new_spindles > hiSpindles t && strict -> Bad T.FailDisk |
498 |
| secondary_needed_mem >= old_mem && strict -> Bad T.FailMem |
499 |
| new_failn1 && not (failN1 t) && strict -> Bad T.FailMem |
500 |
| otherwise -> |
501 |
let new_slist = iname:sList t |
502 |
r = t { sList = new_slist, fDsk = new_dsk |
503 |
, peers = new_peers, failN1 = new_failn1 |
504 |
, rMem = new_rmem, pDsk = new_dp |
505 |
, pRem = new_prem, utilLoad = new_load |
506 |
, instSpindles = new_spindles |
507 |
} |
508 |
in Ok r |
509 |
|
510 |
-- * Stats functions |
511 |
|
512 |
-- | Computes the amount of available disk on a given node. |
513 |
availDisk :: Node -> Int |
514 |
availDisk t = |
515 |
let _f = fDsk t |
516 |
_l = loDsk t |
517 |
in if _f < _l |
518 |
then 0 |
519 |
else _f - _l |
520 |
|
521 |
-- | Computes the amount of used disk on a given node. |
522 |
iDsk :: Node -> Int |
523 |
iDsk t = truncate (tDsk t) - fDsk t |
524 |
|
525 |
-- | Computes the amount of available memory on a given node. |
526 |
availMem :: Node -> Int |
527 |
availMem t = |
528 |
let _f = fMem t |
529 |
_l = rMem t |
530 |
in if _f < _l |
531 |
then 0 |
532 |
else _f - _l |
533 |
|
534 |
-- | Computes the amount of available memory on a given node. |
535 |
availCpu :: Node -> Int |
536 |
availCpu t = |
537 |
let _u = uCpu t |
538 |
_l = hiCpu t |
539 |
in if _l >= _u |
540 |
then _l - _u |
541 |
else 0 |
542 |
|
543 |
-- | The memory used by instances on a given node. |
544 |
iMem :: Node -> Int |
545 |
iMem t = truncate (tMem t) - nMem t - xMem t - fMem t |
546 |
|
547 |
-- * Display functions |
548 |
|
549 |
-- | Return a field for a given node. |
550 |
showField :: Node -- ^ Node which we're querying |
551 |
-> String -- ^ Field name |
552 |
-> String -- ^ Field value as string |
553 |
showField t field = |
554 |
case field of |
555 |
"idx" -> printf "%4d" $ idx t |
556 |
"name" -> alias t |
557 |
"fqdn" -> name t |
558 |
"status" -> case () of |
559 |
_ | offline t -> "-" |
560 |
| failN1 t -> "*" |
561 |
| otherwise -> " " |
562 |
"tmem" -> printf "%5.0f" $ tMem t |
563 |
"nmem" -> printf "%5d" $ nMem t |
564 |
"xmem" -> printf "%5d" $ xMem t |
565 |
"fmem" -> printf "%5d" $ fMem t |
566 |
"imem" -> printf "%5d" $ iMem t |
567 |
"rmem" -> printf "%5d" $ rMem t |
568 |
"amem" -> printf "%5d" $ fMem t - rMem t |
569 |
"tdsk" -> printf "%5.0f" $ tDsk t / 1024 |
570 |
"fdsk" -> printf "%5d" $ fDsk t `div` 1024 |
571 |
"tcpu" -> printf "%4.0f" $ tCpu t |
572 |
"ucpu" -> printf "%4d" $ uCpu t |
573 |
"pcnt" -> printf "%3d" $ length (pList t) |
574 |
"scnt" -> printf "%3d" $ length (sList t) |
575 |
"plist" -> show $ pList t |
576 |
"slist" -> show $ sList t |
577 |
"pfmem" -> printf "%6.4f" $ pMem t |
578 |
"pfdsk" -> printf "%6.4f" $ pDsk t |
579 |
"rcpu" -> printf "%5.2f" $ pCpu t |
580 |
"cload" -> printf "%5.3f" uC |
581 |
"mload" -> printf "%5.3f" uM |
582 |
"dload" -> printf "%5.3f" uD |
583 |
"nload" -> printf "%5.3f" uN |
584 |
"ptags" -> intercalate "," . map (uncurry (printf "%s=%d")) . |
585 |
Map.toList $ pTags t |
586 |
"peermap" -> show $ peers t |
587 |
"spindle_count" -> show $ spindleCount t |
588 |
"hi_spindles" -> show $ hiSpindles t |
589 |
"inst_spindles" -> show $ instSpindles t |
590 |
_ -> T.unknownField |
591 |
where |
592 |
T.DynUtil { T.cpuWeight = uC, T.memWeight = uM, |
593 |
T.dskWeight = uD, T.netWeight = uN } = utilLoad t |
594 |
|
595 |
-- | Returns the header and numeric propery of a field. |
596 |
showHeader :: String -> (String, Bool) |
597 |
showHeader field = |
598 |
case field of |
599 |
"idx" -> ("Index", True) |
600 |
"name" -> ("Name", False) |
601 |
"fqdn" -> ("Name", False) |
602 |
"status" -> ("F", False) |
603 |
"tmem" -> ("t_mem", True) |
604 |
"nmem" -> ("n_mem", True) |
605 |
"xmem" -> ("x_mem", True) |
606 |
"fmem" -> ("f_mem", True) |
607 |
"imem" -> ("i_mem", True) |
608 |
"rmem" -> ("r_mem", True) |
609 |
"amem" -> ("a_mem", True) |
610 |
"tdsk" -> ("t_dsk", True) |
611 |
"fdsk" -> ("f_dsk", True) |
612 |
"tcpu" -> ("pcpu", True) |
613 |
"ucpu" -> ("vcpu", True) |
614 |
"pcnt" -> ("pcnt", True) |
615 |
"scnt" -> ("scnt", True) |
616 |
"plist" -> ("primaries", True) |
617 |
"slist" -> ("secondaries", True) |
618 |
"pfmem" -> ("p_fmem", True) |
619 |
"pfdsk" -> ("p_fdsk", True) |
620 |
"rcpu" -> ("r_cpu", True) |
621 |
"cload" -> ("lCpu", True) |
622 |
"mload" -> ("lMem", True) |
623 |
"dload" -> ("lDsk", True) |
624 |
"nload" -> ("lNet", True) |
625 |
"ptags" -> ("PrimaryTags", False) |
626 |
"peermap" -> ("PeerMap", False) |
627 |
"spindle_count" -> ("NodeSpindles", True) |
628 |
"hi_spindles" -> ("MaxSpindles", True) |
629 |
"inst_spindles" -> ("InstSpindles", True) |
630 |
-- TODO: add node fields (group.uuid, group) |
631 |
_ -> (T.unknownField, False) |
632 |
|
633 |
-- | String converter for the node list functionality. |
634 |
list :: [String] -> Node -> [String] |
635 |
list fields t = map (showField t) fields |
636 |
|
637 |
-- | Constant holding the fields we're displaying by default. |
638 |
defaultFields :: [String] |
639 |
defaultFields = |
640 |
[ "status", "name", "tmem", "nmem", "imem", "xmem", "fmem" |
641 |
, "rmem", "tdsk", "fdsk", "tcpu", "ucpu", "pcnt", "scnt" |
642 |
, "pfmem", "pfdsk", "rcpu" |
643 |
, "cload", "mload", "dload", "nload" ] |
644 |
|
645 |
-- | Split a list of nodes into a list of (node group UUID, list of |
646 |
-- associated nodes). |
647 |
computeGroups :: [Node] -> [(T.Gdx, [Node])] |
648 |
computeGroups nodes = |
649 |
let nodes' = sortBy (comparing group) nodes |
650 |
nodes'' = groupBy (\a b -> group a == group b) nodes' |
651 |
in map (\nl -> (group (head nl), nl)) nodes'' |