root / htools / Ganeti / HTools / Types.hs @ 3c002a13
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1 | e4c5beaf | Iustin Pop | {-| Some common types. |
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2 | e4c5beaf | Iustin Pop | |
3 | e4c5beaf | Iustin Pop | -} |
4 | e4c5beaf | Iustin Pop | |
5 | e2fa2baf | Iustin Pop | {- |
6 | e2fa2baf | Iustin Pop | |
7 | 2e5eb96a | Iustin Pop | Copyright (C) 2009, 2010, 2011 Google Inc. |
8 | e2fa2baf | Iustin Pop | |
9 | e2fa2baf | Iustin Pop | This program is free software; you can redistribute it and/or modify |
10 | e2fa2baf | Iustin Pop | it under the terms of the GNU General Public License as published by |
11 | e2fa2baf | Iustin Pop | the Free Software Foundation; either version 2 of the License, or |
12 | e2fa2baf | Iustin Pop | (at your option) any later version. |
13 | e2fa2baf | Iustin Pop | |
14 | e2fa2baf | Iustin Pop | This program is distributed in the hope that it will be useful, but |
15 | e2fa2baf | Iustin Pop | WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | e2fa2baf | Iustin Pop | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
17 | e2fa2baf | Iustin Pop | General Public License for more details. |
18 | e2fa2baf | Iustin Pop | |
19 | e2fa2baf | Iustin Pop | You should have received a copy of the GNU General Public License |
20 | e2fa2baf | Iustin Pop | along with this program; if not, write to the Free Software |
21 | e2fa2baf | Iustin Pop | Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
22 | e2fa2baf | Iustin Pop | 02110-1301, USA. |
23 | e2fa2baf | Iustin Pop | |
24 | e2fa2baf | Iustin Pop | -} |
25 | e2fa2baf | Iustin Pop | |
26 | e4c5beaf | Iustin Pop | module Ganeti.HTools.Types |
27 | 19f38ee8 | Iustin Pop | ( Idx |
28 | 19f38ee8 | Iustin Pop | , Ndx |
29 | 0dc1bf87 | Iustin Pop | , Gdx |
30 | 19f38ee8 | Iustin Pop | , NameAssoc |
31 | 92e32d76 | Iustin Pop | , Score |
32 | 2180829f | Iustin Pop | , Weight |
33 | c4d98278 | Iustin Pop | , GroupID |
34 | 0dc1bf87 | Iustin Pop | , AllocPolicy(..) |
35 | b2ba4669 | Iustin Pop | , apolFromString |
36 | b2ba4669 | Iustin Pop | , apolToString |
37 | 1f9066c0 | Iustin Pop | , RSpec(..) |
38 | 2180829f | Iustin Pop | , DynUtil(..) |
39 | 2180829f | Iustin Pop | , zeroUtil |
40 | ee9724b9 | Iustin Pop | , baseUtil |
41 | 2180829f | Iustin Pop | , addUtil |
42 | 2180829f | Iustin Pop | , subUtil |
43 | f4c0b8c5 | Iustin Pop | , defVcpuRatio |
44 | f4c0b8c5 | Iustin Pop | , defReservedDiskRatio |
45 | 1e3dccc8 | Iustin Pop | , unitMem |
46 | 1e3dccc8 | Iustin Pop | , unitCpu |
47 | 1e3dccc8 | Iustin Pop | , unitDsk |
48 | 82ea2874 | Iustin Pop | , unknownField |
49 | 92e32d76 | Iustin Pop | , Placement |
50 | 92e32d76 | Iustin Pop | , IMove(..) |
51 | cc25e437 | Iustin Pop | , DiskTemplate(..) |
52 | cc25e437 | Iustin Pop | , dtToString |
53 | cc25e437 | Iustin Pop | , dtFromString |
54 | 0e8ae201 | Iustin Pop | , MoveJob |
55 | 0e8ae201 | Iustin Pop | , JobSet |
56 | 19f38ee8 | Iustin Pop | , Result(..) |
57 | 06fb841e | Iustin Pop | , isOk |
58 | 06fb841e | Iustin Pop | , isBad |
59 | 19f38ee8 | Iustin Pop | , Element(..) |
60 | f2280553 | Iustin Pop | , FailMode(..) |
61 | 478df686 | Iustin Pop | , FailStats |
62 | f2280553 | Iustin Pop | , OpResult(..) |
63 | 135a6c6a | Iustin Pop | , connTimeout |
64 | 135a6c6a | Iustin Pop | , queryTimeout |
65 | 1fe412bb | Iustin Pop | , EvacMode(..) |
66 | 19f38ee8 | Iustin Pop | ) where |
67 | e4c5beaf | Iustin Pop | |
68 | 2d0ca2c5 | Iustin Pop | import qualified Data.Map as M |
69 | b2ba4669 | Iustin Pop | import qualified Text.JSON as JSON |
70 | 2d0ca2c5 | Iustin Pop | |
71 | 2e5eb96a | Iustin Pop | import qualified Ganeti.Constants as C |
72 | 2e5eb96a | Iustin Pop | |
73 | 9188aeef | Iustin Pop | -- | The instance index type. |
74 | 608efcce | Iustin Pop | type Idx = Int |
75 | 608efcce | Iustin Pop | |
76 | 9188aeef | Iustin Pop | -- | The node index type. |
77 | 608efcce | Iustin Pop | type Ndx = Int |
78 | 608efcce | Iustin Pop | |
79 | 0dc1bf87 | Iustin Pop | -- | The group index type. |
80 | 0dc1bf87 | Iustin Pop | type Gdx = Int |
81 | 0dc1bf87 | Iustin Pop | |
82 | 9188aeef | Iustin Pop | -- | The type used to hold name-to-idx mappings. |
83 | 2d0ca2c5 | Iustin Pop | type NameAssoc = M.Map String Int |
84 | e4c5beaf | Iustin Pop | |
85 | 92e32d76 | Iustin Pop | -- | A separate name for the cluster score type. |
86 | 92e32d76 | Iustin Pop | type Score = Double |
87 | 92e32d76 | Iustin Pop | |
88 | 2180829f | Iustin Pop | -- | A separate name for a weight metric. |
89 | 2180829f | Iustin Pop | type Weight = Double |
90 | 2180829f | Iustin Pop | |
91 | 0dc1bf87 | Iustin Pop | -- | The Group UUID type. |
92 | c4d98278 | Iustin Pop | type GroupID = String |
93 | c4d98278 | Iustin Pop | |
94 | 0dc1bf87 | Iustin Pop | -- | The Group allocation policy type. |
95 | 73206d0a | Iustin Pop | -- |
96 | 73206d0a | Iustin Pop | -- Note that the order of constructors is important as the automatic |
97 | 73206d0a | Iustin Pop | -- Ord instance will order them in the order they are defined, so when |
98 | 73206d0a | Iustin Pop | -- changing this data type be careful about the interaction with the |
99 | 73206d0a | Iustin Pop | -- desired sorting order. |
100 | 73206d0a | Iustin Pop | data AllocPolicy |
101 | 73206d0a | Iustin Pop | = AllocPreferred -- ^ This is the normal status, the group |
102 | 73206d0a | Iustin Pop | -- should be used normally during allocations |
103 | 73206d0a | Iustin Pop | | AllocLastResort -- ^ This group should be used only as |
104 | 73206d0a | Iustin Pop | -- last-resort, after the preferred groups |
105 | 73206d0a | Iustin Pop | | AllocUnallocable -- ^ This group must not be used for new |
106 | 73206d0a | Iustin Pop | -- allocations |
107 | 3c002a13 | Iustin Pop | deriving (Show, Read, Eq, Ord, Enum, Bounded) |
108 | 0dc1bf87 | Iustin Pop | |
109 | 525bfb36 | Iustin Pop | -- | Convert a string to an alloc policy. |
110 | b2ba4669 | Iustin Pop | apolFromString :: (Monad m) => String -> m AllocPolicy |
111 | b2ba4669 | Iustin Pop | apolFromString s = |
112 | 2e5eb96a | Iustin Pop | case () of |
113 | 2e5eb96a | Iustin Pop | _ | s == C.allocPolicyPreferred -> return AllocPreferred |
114 | 2e5eb96a | Iustin Pop | | s == C.allocPolicyLastResort -> return AllocLastResort |
115 | 2e5eb96a | Iustin Pop | | s == C.allocPolicyUnallocable -> return AllocUnallocable |
116 | 2e5eb96a | Iustin Pop | | otherwise -> fail $ "Invalid alloc policy mode: " ++ s |
117 | b2ba4669 | Iustin Pop | |
118 | 525bfb36 | Iustin Pop | -- | Convert an alloc policy to the Ganeti string equivalent. |
119 | b2ba4669 | Iustin Pop | apolToString :: AllocPolicy -> String |
120 | 2e5eb96a | Iustin Pop | apolToString AllocPreferred = C.allocPolicyPreferred |
121 | 2e5eb96a | Iustin Pop | apolToString AllocLastResort = C.allocPolicyLastResort |
122 | 2e5eb96a | Iustin Pop | apolToString AllocUnallocable = C.allocPolicyUnallocable |
123 | b2ba4669 | Iustin Pop | |
124 | b2ba4669 | Iustin Pop | instance JSON.JSON AllocPolicy where |
125 | b2ba4669 | Iustin Pop | showJSON = JSON.showJSON . apolToString |
126 | b2ba4669 | Iustin Pop | readJSON s = case JSON.readJSON s of |
127 | b2ba4669 | Iustin Pop | JSON.Ok s' -> apolFromString s' |
128 | b2ba4669 | Iustin Pop | JSON.Error e -> JSON.Error $ |
129 | b2ba4669 | Iustin Pop | "Can't parse alloc_policy: " ++ e |
130 | b2ba4669 | Iustin Pop | |
131 | 1f9066c0 | Iustin Pop | -- | The resource spec type. |
132 | 1f9066c0 | Iustin Pop | data RSpec = RSpec |
133 | 1f9066c0 | Iustin Pop | { rspecCpu :: Int -- ^ Requested VCPUs |
134 | 1f9066c0 | Iustin Pop | , rspecMem :: Int -- ^ Requested memory |
135 | 1f9066c0 | Iustin Pop | , rspecDsk :: Int -- ^ Requested disk |
136 | 6bc39970 | Iustin Pop | } deriving (Show, Read, Eq) |
137 | 1f9066c0 | Iustin Pop | |
138 | 2180829f | Iustin Pop | -- | The dynamic resource specs of a machine (i.e. load or load |
139 | 2180829f | Iustin Pop | -- capacity, as opposed to size). |
140 | 2180829f | Iustin Pop | data DynUtil = DynUtil |
141 | 2180829f | Iustin Pop | { cpuWeight :: Weight -- ^ Standardised CPU usage |
142 | 2180829f | Iustin Pop | , memWeight :: Weight -- ^ Standardised memory load |
143 | c4ef235b | Iustin Pop | , dskWeight :: Weight -- ^ Standardised disk I\/O usage |
144 | 2180829f | Iustin Pop | , netWeight :: Weight -- ^ Standardised network usage |
145 | 6bc39970 | Iustin Pop | } deriving (Show, Read, Eq) |
146 | 2180829f | Iustin Pop | |
147 | 525bfb36 | Iustin Pop | -- | Initial empty utilisation. |
148 | 2180829f | Iustin Pop | zeroUtil :: DynUtil |
149 | 2180829f | Iustin Pop | zeroUtil = DynUtil { cpuWeight = 0, memWeight = 0 |
150 | 2180829f | Iustin Pop | , dskWeight = 0, netWeight = 0 } |
151 | 2180829f | Iustin Pop | |
152 | 525bfb36 | Iustin Pop | -- | Base utilisation (used when no actual utilisation data is |
153 | 525bfb36 | Iustin Pop | -- supplied). |
154 | ee9724b9 | Iustin Pop | baseUtil :: DynUtil |
155 | ee9724b9 | Iustin Pop | baseUtil = DynUtil { cpuWeight = 1, memWeight = 1 |
156 | ee9724b9 | Iustin Pop | , dskWeight = 1, netWeight = 1 } |
157 | ee9724b9 | Iustin Pop | |
158 | 525bfb36 | Iustin Pop | -- | Sum two utilisation records. |
159 | 2180829f | Iustin Pop | addUtil :: DynUtil -> DynUtil -> DynUtil |
160 | 2180829f | Iustin Pop | addUtil (DynUtil a1 a2 a3 a4) (DynUtil b1 b2 b3 b4) = |
161 | 2180829f | Iustin Pop | DynUtil (a1+b1) (a2+b2) (a3+b3) (a4+b4) |
162 | 2180829f | Iustin Pop | |
163 | 525bfb36 | Iustin Pop | -- | Substracts one utilisation record from another. |
164 | 2180829f | Iustin Pop | subUtil :: DynUtil -> DynUtil -> DynUtil |
165 | 2180829f | Iustin Pop | subUtil (DynUtil a1 a2 a3 a4) (DynUtil b1 b2 b3 b4) = |
166 | 2180829f | Iustin Pop | DynUtil (a1-b1) (a2-b2) (a3-b3) (a4-b4) |
167 | 2180829f | Iustin Pop | |
168 | 66dac8e0 | Iustin Pop | -- | The description of an instance placement. It contains the |
169 | 66dac8e0 | Iustin Pop | -- instance index, the new primary and secondary node, the move being |
170 | 66dac8e0 | Iustin Pop | -- performed and the score of the cluster after the move. |
171 | 66dac8e0 | Iustin Pop | type Placement = (Idx, Ndx, Ndx, IMove, Score) |
172 | 92e32d76 | Iustin Pop | |
173 | 525bfb36 | Iustin Pop | -- | An instance move definition. |
174 | 92e32d76 | Iustin Pop | data IMove = Failover -- ^ Failover the instance (f) |
175 | 92e32d76 | Iustin Pop | | ReplacePrimary Ndx -- ^ Replace primary (f, r:np, f) |
176 | 92e32d76 | Iustin Pop | | ReplaceSecondary Ndx -- ^ Replace secondary (r:ns) |
177 | 92e32d76 | Iustin Pop | | ReplaceAndFailover Ndx -- ^ Replace secondary, failover (r:np, f) |
178 | 92e32d76 | Iustin Pop | | FailoverAndReplace Ndx -- ^ Failover, replace secondary (f, r:ns) |
179 | 6bc39970 | Iustin Pop | deriving (Show, Read) |
180 | 92e32d76 | Iustin Pop | |
181 | cc25e437 | Iustin Pop | -- | Instance disk template type |
182 | cc25e437 | Iustin Pop | data DiskTemplate = DTDiskless |
183 | cc25e437 | Iustin Pop | | DTFile |
184 | cc25e437 | Iustin Pop | | DTSharedFile |
185 | cc25e437 | Iustin Pop | | DTPlain |
186 | cc25e437 | Iustin Pop | | DTBlock |
187 | cc25e437 | Iustin Pop | | DTDrbd8 |
188 | 3c002a13 | Iustin Pop | deriving (Show, Read, Eq, Enum, Bounded) |
189 | cc25e437 | Iustin Pop | |
190 | cc25e437 | Iustin Pop | -- | Converts a DiskTemplate to String |
191 | cc25e437 | Iustin Pop | dtToString :: DiskTemplate -> String |
192 | cc25e437 | Iustin Pop | dtToString DTDiskless = C.dtDiskless |
193 | cc25e437 | Iustin Pop | dtToString DTFile = C.dtFile |
194 | cc25e437 | Iustin Pop | dtToString DTSharedFile = C.dtSharedFile |
195 | cc25e437 | Iustin Pop | dtToString DTPlain = C.dtPlain |
196 | cc25e437 | Iustin Pop | dtToString DTBlock = C.dtBlock |
197 | cc25e437 | Iustin Pop | dtToString DTDrbd8 = C.dtDrbd8 |
198 | cc25e437 | Iustin Pop | |
199 | cc25e437 | Iustin Pop | -- | Converts a DiskTemplate from String |
200 | cc25e437 | Iustin Pop | dtFromString :: (Monad m) => String -> m DiskTemplate |
201 | cc25e437 | Iustin Pop | dtFromString s = |
202 | cc25e437 | Iustin Pop | case () of |
203 | cc25e437 | Iustin Pop | _ | s == C.dtDiskless -> return DTDiskless |
204 | cc25e437 | Iustin Pop | | s == C.dtFile -> return DTFile |
205 | cc25e437 | Iustin Pop | | s == C.dtSharedFile -> return DTSharedFile |
206 | cc25e437 | Iustin Pop | | s == C.dtPlain -> return DTPlain |
207 | cc25e437 | Iustin Pop | | s == C.dtBlock -> return DTBlock |
208 | cc25e437 | Iustin Pop | | s == C.dtDrbd8 -> return DTDrbd8 |
209 | cc25e437 | Iustin Pop | | otherwise -> fail $ "Invalid disk template: " ++ s |
210 | cc25e437 | Iustin Pop | |
211 | cc25e437 | Iustin Pop | instance JSON.JSON DiskTemplate where |
212 | cc25e437 | Iustin Pop | showJSON = JSON.showJSON . dtToString |
213 | cc25e437 | Iustin Pop | readJSON s = case JSON.readJSON s of |
214 | cc25e437 | Iustin Pop | JSON.Ok s' -> dtFromString s' |
215 | cc25e437 | Iustin Pop | JSON.Error e -> JSON.Error $ |
216 | cc25e437 | Iustin Pop | "Can't parse disk_template as string: " ++ e |
217 | cc25e437 | Iustin Pop | |
218 | 0e8ae201 | Iustin Pop | -- | Formatted solution output for one move (involved nodes and |
219 | 525bfb36 | Iustin Pop | -- commands. |
220 | 924f9c16 | Iustin Pop | type MoveJob = ([Ndx], Idx, IMove, [String]) |
221 | 0e8ae201 | Iustin Pop | |
222 | 525bfb36 | Iustin Pop | -- | Unknown field in table output. |
223 | 82ea2874 | Iustin Pop | unknownField :: String |
224 | 82ea2874 | Iustin Pop | unknownField = "<unknown field>" |
225 | 82ea2874 | Iustin Pop | |
226 | 525bfb36 | Iustin Pop | -- | A list of command elements. |
227 | 0e8ae201 | Iustin Pop | type JobSet = [MoveJob] |
228 | 0e8ae201 | Iustin Pop | |
229 | 135a6c6a | Iustin Pop | -- | Connection timeout (when using non-file methods). |
230 | 135a6c6a | Iustin Pop | connTimeout :: Int |
231 | 135a6c6a | Iustin Pop | connTimeout = 15 |
232 | 135a6c6a | Iustin Pop | |
233 | 135a6c6a | Iustin Pop | -- | The default timeout for queries (when using non-file methods). |
234 | 135a6c6a | Iustin Pop | queryTimeout :: Int |
235 | 135a6c6a | Iustin Pop | queryTimeout = 60 |
236 | 135a6c6a | Iustin Pop | |
237 | f4c0b8c5 | Iustin Pop | -- | Default vcpu-to-pcpu ratio (randomly chosen value). |
238 | f4c0b8c5 | Iustin Pop | defVcpuRatio :: Double |
239 | f4c0b8c5 | Iustin Pop | defVcpuRatio = 64 |
240 | f4c0b8c5 | Iustin Pop | |
241 | f4c0b8c5 | Iustin Pop | -- | Default max disk usage ratio. |
242 | f4c0b8c5 | Iustin Pop | defReservedDiskRatio :: Double |
243 | f4c0b8c5 | Iustin Pop | defReservedDiskRatio = 0 |
244 | f4c0b8c5 | Iustin Pop | |
245 | 1e3dccc8 | Iustin Pop | -- | Base memory unit. |
246 | 1e3dccc8 | Iustin Pop | unitMem :: Int |
247 | 1e3dccc8 | Iustin Pop | unitMem = 64 |
248 | 1e3dccc8 | Iustin Pop | |
249 | 1e3dccc8 | Iustin Pop | -- | Base disk unit. |
250 | 1e3dccc8 | Iustin Pop | unitDsk :: Int |
251 | 1e3dccc8 | Iustin Pop | unitDsk = 256 |
252 | 1e3dccc8 | Iustin Pop | |
253 | 1e3dccc8 | Iustin Pop | -- | Base vcpus unit. |
254 | 1e3dccc8 | Iustin Pop | unitCpu :: Int |
255 | 1e3dccc8 | Iustin Pop | unitCpu = 1 |
256 | 1e3dccc8 | Iustin Pop | |
257 | 262a08a2 | Iustin Pop | {-| |
258 | e4c5beaf | Iustin Pop | |
259 | 525bfb36 | Iustin Pop | This is similar to the JSON library Result type - /very/ similar, but |
260 | e4c5beaf | Iustin Pop | we want to use it in multiple places, so we abstract it into a |
261 | e4c5beaf | Iustin Pop | mini-library here |
262 | e4c5beaf | Iustin Pop | |
263 | e4c5beaf | Iustin Pop | -} |
264 | e4c5beaf | Iustin Pop | data Result a |
265 | e4c5beaf | Iustin Pop | = Bad String |
266 | e4c5beaf | Iustin Pop | | Ok a |
267 | 6bc39970 | Iustin Pop | deriving (Show, Read) |
268 | e4c5beaf | Iustin Pop | |
269 | e4c5beaf | Iustin Pop | instance Monad Result where |
270 | e4c5beaf | Iustin Pop | (>>=) (Bad x) _ = Bad x |
271 | e4c5beaf | Iustin Pop | (>>=) (Ok x) fn = fn x |
272 | e4c5beaf | Iustin Pop | return = Ok |
273 | e4c5beaf | Iustin Pop | fail = Bad |
274 | 497e30a1 | Iustin Pop | |
275 | 525bfb36 | Iustin Pop | -- | Simple checker for whether a 'Result' is OK. |
276 | 06fb841e | Iustin Pop | isOk :: Result a -> Bool |
277 | 06fb841e | Iustin Pop | isOk (Ok _) = True |
278 | 06fb841e | Iustin Pop | isOk _ = False |
279 | 06fb841e | Iustin Pop | |
280 | 525bfb36 | Iustin Pop | -- | Simple checker for whether a 'Result' is a failure. |
281 | 06fb841e | Iustin Pop | isBad :: Result a -> Bool |
282 | 06fb841e | Iustin Pop | isBad = not . isOk |
283 | 06fb841e | Iustin Pop | |
284 | 525bfb36 | Iustin Pop | -- | Reason for an operation's falure. |
285 | f2280553 | Iustin Pop | data FailMode = FailMem -- ^ Failed due to not enough RAM |
286 | f2280553 | Iustin Pop | | FailDisk -- ^ Failed due to not enough disk |
287 | f2280553 | Iustin Pop | | FailCPU -- ^ Failed due to not enough CPU capacity |
288 | f2280553 | Iustin Pop | | FailN1 -- ^ Failed due to not passing N1 checks |
289 | 5f0b9579 | Iustin Pop | | FailTags -- ^ Failed due to tag exclusion |
290 | 6bc39970 | Iustin Pop | deriving (Eq, Enum, Bounded, Show, Read) |
291 | f2280553 | Iustin Pop | |
292 | 525bfb36 | Iustin Pop | -- | List with failure statistics. |
293 | 478df686 | Iustin Pop | type FailStats = [(FailMode, Int)] |
294 | 478df686 | Iustin Pop | |
295 | 525bfb36 | Iustin Pop | -- | Either-like data-type customized for our failure modes. |
296 | f2280553 | Iustin Pop | data OpResult a = OpFail FailMode -- ^ Failed operation |
297 | f2280553 | Iustin Pop | | OpGood a -- ^ Success operation |
298 | 6bc39970 | Iustin Pop | deriving (Show, Read) |
299 | f2280553 | Iustin Pop | |
300 | f2280553 | Iustin Pop | instance Monad OpResult where |
301 | f2280553 | Iustin Pop | (OpGood x) >>= fn = fn x |
302 | f2280553 | Iustin Pop | (OpFail y) >>= _ = OpFail y |
303 | f2280553 | Iustin Pop | return = OpGood |
304 | f2280553 | Iustin Pop | |
305 | 9188aeef | Iustin Pop | -- | A generic class for items that have updateable names and indices. |
306 | 497e30a1 | Iustin Pop | class Element a where |
307 | 9188aeef | Iustin Pop | -- | Returns the name of the element |
308 | 262a08a2 | Iustin Pop | nameOf :: a -> String |
309 | c854092b | Iustin Pop | -- | Returns all the known names of the element |
310 | c854092b | Iustin Pop | allNames :: a -> [String] |
311 | 9188aeef | Iustin Pop | -- | Returns the index of the element |
312 | 262a08a2 | Iustin Pop | idxOf :: a -> Int |
313 | 3e4480e0 | Iustin Pop | -- | Updates the alias of the element |
314 | 3e4480e0 | Iustin Pop | setAlias :: a -> String -> a |
315 | 3e4480e0 | Iustin Pop | -- | Compute the alias by stripping a given suffix (domain) from |
316 | 525bfb36 | Iustin Pop | -- the name |
317 | 3e4480e0 | Iustin Pop | computeAlias :: String -> a -> a |
318 | 3e4480e0 | Iustin Pop | computeAlias dom e = setAlias e alias |
319 | 3e4480e0 | Iustin Pop | where alias = take (length name - length dom) name |
320 | 3e4480e0 | Iustin Pop | name = nameOf e |
321 | 9188aeef | Iustin Pop | -- | Updates the index of the element |
322 | 497e30a1 | Iustin Pop | setIdx :: a -> Int -> a |
323 | 1fe412bb | Iustin Pop | |
324 | 1fe412bb | Iustin Pop | -- | The iallocator node-evacuate evac_mode type. |
325 | 1fe412bb | Iustin Pop | data EvacMode = ChangePrimary |
326 | 1fe412bb | Iustin Pop | | ChangeSecondary |
327 | 1fe412bb | Iustin Pop | | ChangeAll |
328 | 1fe412bb | Iustin Pop | deriving (Show, Read) |