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1 | 525bfb36 | Iustin Pop | {-| Parsing data from text-files. |
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2 | 040afc35 | Iustin Pop | |
3 | 040afc35 | Iustin Pop | This module holds the code for loading the cluster state from text |
4 | 525bfb36 | Iustin Pop | files, as produced by @gnt-node@ and @gnt-instance@ @list@ command. |
5 | 040afc35 | Iustin Pop | |
6 | 040afc35 | Iustin Pop | -} |
7 | 040afc35 | Iustin Pop | |
8 | e2fa2baf | Iustin Pop | {- |
9 | e2fa2baf | Iustin Pop | |
10 | b37f4a76 | Iustin Pop | Copyright (C) 2009, 2010, 2011, 2012 Google Inc. |
11 | e2fa2baf | Iustin Pop | |
12 | e2fa2baf | Iustin Pop | This program is free software; you can redistribute it and/or modify |
13 | e2fa2baf | Iustin Pop | it under the terms of the GNU General Public License as published by |
14 | e2fa2baf | Iustin Pop | the Free Software Foundation; either version 2 of the License, or |
15 | e2fa2baf | Iustin Pop | (at your option) any later version. |
16 | e2fa2baf | Iustin Pop | |
17 | e2fa2baf | Iustin Pop | This program is distributed in the hope that it will be useful, but |
18 | e2fa2baf | Iustin Pop | WITHOUT ANY WARRANTY; without even the implied warranty of |
19 | e2fa2baf | Iustin Pop | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
20 | e2fa2baf | Iustin Pop | General Public License for more details. |
21 | e2fa2baf | Iustin Pop | |
22 | e2fa2baf | Iustin Pop | You should have received a copy of the GNU General Public License |
23 | e2fa2baf | Iustin Pop | along with this program; if not, write to the Free Software |
24 | e2fa2baf | Iustin Pop | Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
25 | e2fa2baf | Iustin Pop | 02110-1301, USA. |
26 | e2fa2baf | Iustin Pop | |
27 | e2fa2baf | Iustin Pop | -} |
28 | e2fa2baf | Iustin Pop | |
29 | 879d9290 | Iustin Pop | module Ganeti.HTools.Backend.Text |
30 | ebf38064 | Iustin Pop | ( loadData |
31 | ebf38064 | Iustin Pop | , parseData |
32 | ebf38064 | Iustin Pop | , loadInst |
33 | ebf38064 | Iustin Pop | , loadNode |
34 | bcd17bf0 | Iustin Pop | , loadISpec |
35 | bcd17bf0 | Iustin Pop | , loadIPolicy |
36 | ebf38064 | Iustin Pop | , serializeInstances |
37 | ebf38064 | Iustin Pop | , serializeNode |
38 | ebf38064 | Iustin Pop | , serializeNodes |
39 | bcd17bf0 | Iustin Pop | , serializeGroup |
40 | bcd17bf0 | Iustin Pop | , serializeISpec |
41 | bcd17bf0 | Iustin Pop | , serializeIPolicy |
42 | ebf38064 | Iustin Pop | , serializeCluster |
43 | ebf38064 | Iustin Pop | ) where |
44 | 040afc35 | Iustin Pop | |
45 | 040afc35 | Iustin Pop | import Control.Monad |
46 | 3bf75b7d | Iustin Pop | import Data.List |
47 | 3bf75b7d | Iustin Pop | |
48 | 3bf75b7d | Iustin Pop | import Text.Printf (printf) |
49 | 040afc35 | Iustin Pop | |
50 | 01e52493 | Iustin Pop | import Ganeti.BasicTypes |
51 | 26d62e4c | Iustin Pop | import Ganeti.Utils |
52 | 040afc35 | Iustin Pop | import Ganeti.HTools.Loader |
53 | e4c5beaf | Iustin Pop | import Ganeti.HTools.Types |
54 | 3bf75b7d | Iustin Pop | import qualified Ganeti.HTools.Container as Container |
55 | a679e9dc | Iustin Pop | import qualified Ganeti.HTools.Group as Group |
56 | 040afc35 | Iustin Pop | import qualified Ganeti.HTools.Node as Node |
57 | 040afc35 | Iustin Pop | import qualified Ganeti.HTools.Instance as Instance |
58 | 040afc35 | Iustin Pop | |
59 | b37f4a76 | Iustin Pop | -- * Helper functions |
60 | b37f4a76 | Iustin Pop | |
61 | b37f4a76 | Iustin Pop | -- | Simple wrapper over sepSplit |
62 | b37f4a76 | Iustin Pop | commaSplit :: String -> [String] |
63 | b37f4a76 | Iustin Pop | commaSplit = sepSplit ',' |
64 | b37f4a76 | Iustin Pop | |
65 | 525bfb36 | Iustin Pop | -- * Serialisation functions |
66 | 525bfb36 | Iustin Pop | |
67 | 525bfb36 | Iustin Pop | -- | Serialize a single group. |
68 | e4d8071d | Iustin Pop | serializeGroup :: Group.Group -> String |
69 | e4d8071d | Iustin Pop | serializeGroup grp = |
70 | 6b6e335b | Dato Simó | printf "%s|%s|%s|%s" (Group.name grp) (Group.uuid grp) |
71 | ebf38064 | Iustin Pop | (allocPolicyToRaw (Group.allocPolicy grp)) |
72 | 6b6e335b | Dato Simó | (intercalate "," (Group.allTags grp)) |
73 | e4d8071d | Iustin Pop | |
74 | 525bfb36 | Iustin Pop | -- | Generate group file data from a group list. |
75 | e4d8071d | Iustin Pop | serializeGroups :: Group.List -> String |
76 | e4d8071d | Iustin Pop | serializeGroups = unlines . map serializeGroup . Container.elems |
77 | e4d8071d | Iustin Pop | |
78 | 525bfb36 | Iustin Pop | -- | Serialize a single node. |
79 | 525bfb36 | Iustin Pop | serializeNode :: Group.List -- ^ The list of groups (needed for group uuid) |
80 | 525bfb36 | Iustin Pop | -> Node.Node -- ^ The node to be serialised |
81 | 525bfb36 | Iustin Pop | -> String |
82 | 10ef6b4e | Iustin Pop | serializeNode gl node = |
83 | f951bd09 | Iustin Pop | printf "%s|%.0f|%d|%d|%.0f|%d|%.0f|%c|%s|%d" (Node.name node) |
84 | ebf38064 | Iustin Pop | (Node.tMem node) (Node.nMem node) (Node.fMem node) |
85 | ebf38064 | Iustin Pop | (Node.tDsk node) (Node.fDsk node) (Node.tCpu node) |
86 | ebf38064 | Iustin Pop | (if Node.offline node then 'Y' else 'N') |
87 | ebf38064 | Iustin Pop | (Group.uuid grp) |
88 | f951bd09 | Iustin Pop | (Node.spindleCount node) |
89 | 10ef6b4e | Iustin Pop | where grp = Container.find (Node.group node) gl |
90 | 3bf75b7d | Iustin Pop | |
91 | 525bfb36 | Iustin Pop | -- | Generate node file data from node objects. |
92 | 10ef6b4e | Iustin Pop | serializeNodes :: Group.List -> Node.List -> String |
93 | 10ef6b4e | Iustin Pop | serializeNodes gl = unlines . map (serializeNode gl) . Container.elems |
94 | 3bf75b7d | Iustin Pop | |
95 | 525bfb36 | Iustin Pop | -- | Serialize a single instance. |
96 | 525bfb36 | Iustin Pop | serializeInstance :: Node.List -- ^ The node list (needed for |
97 | 525bfb36 | Iustin Pop | -- node names) |
98 | 525bfb36 | Iustin Pop | -> Instance.Instance -- ^ The instance to be serialised |
99 | 525bfb36 | Iustin Pop | -> String |
100 | 3bf75b7d | Iustin Pop | serializeInstance nl inst = |
101 | ebf38064 | Iustin Pop | let iname = Instance.name inst |
102 | ebf38064 | Iustin Pop | pnode = Container.nameOf nl (Instance.pNode inst) |
103 | ebf38064 | Iustin Pop | sidx = Instance.sNode inst |
104 | ebf38064 | Iustin Pop | snode = (if sidx == Node.noSecondary |
105 | ebf38064 | Iustin Pop | then "" |
106 | ebf38064 | Iustin Pop | else Container.nameOf nl sidx) |
107 | 52cc1370 | René Nussbaumer | in printf "%s|%d|%d|%d|%s|%s|%s|%s|%s|%s|%d" |
108 | ebf38064 | Iustin Pop | iname (Instance.mem inst) (Instance.dsk inst) |
109 | ebf38064 | Iustin Pop | (Instance.vcpus inst) (instanceStatusToRaw (Instance.runSt inst)) |
110 | ebf38064 | Iustin Pop | (if Instance.autoBalance inst then "Y" else "N") |
111 | ebf38064 | Iustin Pop | pnode snode (diskTemplateToRaw (Instance.diskTemplate inst)) |
112 | 2f907bad | Dato Simó | (intercalate "," (Instance.allTags inst)) (Instance.spindleUse inst) |
113 | 3bf75b7d | Iustin Pop | |
114 | 525bfb36 | Iustin Pop | -- | Generate instance file data from instance objects. |
115 | 3bf75b7d | Iustin Pop | serializeInstances :: Node.List -> Instance.List -> String |
116 | 3bf75b7d | Iustin Pop | serializeInstances nl = |
117 | ebf38064 | Iustin Pop | unlines . map (serializeInstance nl) . Container.elems |
118 | 3bf75b7d | Iustin Pop | |
119 | b37f4a76 | Iustin Pop | -- | Generate a spec data from a given ISpec object. |
120 | b37f4a76 | Iustin Pop | serializeISpec :: ISpec -> String |
121 | b37f4a76 | Iustin Pop | serializeISpec ispec = |
122 | b37f4a76 | Iustin Pop | -- this needs to be kept in sync with the object definition |
123 | d953a965 | René Nussbaumer | let ISpec mem_s cpu_c disk_s disk_c nic_c su = ispec |
124 | d953a965 | René Nussbaumer | strings = [show mem_s, show cpu_c, show disk_s, show disk_c, show nic_c, |
125 | d953a965 | René Nussbaumer | show su] |
126 | b37f4a76 | Iustin Pop | in intercalate "," strings |
127 | b37f4a76 | Iustin Pop | |
128 | b37f4a76 | Iustin Pop | -- | Generate disk template data. |
129 | b37f4a76 | Iustin Pop | serializeDiskTemplates :: [DiskTemplate] -> String |
130 | b37f4a76 | Iustin Pop | serializeDiskTemplates = intercalate "," . map diskTemplateToRaw |
131 | b37f4a76 | Iustin Pop | |
132 | b37f4a76 | Iustin Pop | -- | Generate policy data from a given policy object. |
133 | b37f4a76 | Iustin Pop | serializeIPolicy :: String -> IPolicy -> String |
134 | b37f4a76 | Iustin Pop | serializeIPolicy owner ipol = |
135 | c22d4dd4 | Iustin Pop | let IPolicy stdspec minspec maxspec dts vcpu_ratio spindle_ratio = ipol |
136 | b37f4a76 | Iustin Pop | strings = [ owner |
137 | b37f4a76 | Iustin Pop | , serializeISpec stdspec |
138 | b37f4a76 | Iustin Pop | , serializeISpec minspec |
139 | b37f4a76 | Iustin Pop | , serializeISpec maxspec |
140 | b37f4a76 | Iustin Pop | , serializeDiskTemplates dts |
141 | e8fa4ff6 | Iustin Pop | , show vcpu_ratio |
142 | c22d4dd4 | Iustin Pop | , show spindle_ratio |
143 | b37f4a76 | Iustin Pop | ] |
144 | b37f4a76 | Iustin Pop | in intercalate "|" strings |
145 | b37f4a76 | Iustin Pop | |
146 | b37f4a76 | Iustin Pop | -- | Generates the entire ipolicy section from the cluster and group |
147 | b37f4a76 | Iustin Pop | -- objects. |
148 | b37f4a76 | Iustin Pop | serializeAllIPolicies :: IPolicy -> Group.List -> String |
149 | b37f4a76 | Iustin Pop | serializeAllIPolicies cpol gl = |
150 | b37f4a76 | Iustin Pop | let groups = Container.elems gl |
151 | 5b11f8db | Iustin Pop | allpolicies = ("", cpol) : |
152 | b37f4a76 | Iustin Pop | map (\g -> (Group.name g, Group.iPolicy g)) groups |
153 | b37f4a76 | Iustin Pop | strings = map (uncurry serializeIPolicy) allpolicies |
154 | b37f4a76 | Iustin Pop | in unlines strings |
155 | b37f4a76 | Iustin Pop | |
156 | 525bfb36 | Iustin Pop | -- | Generate complete cluster data from node and instance lists. |
157 | c0e31451 | Iustin Pop | serializeCluster :: ClusterData -> String |
158 | b37f4a76 | Iustin Pop | serializeCluster (ClusterData gl nl il ctags cpol) = |
159 | e4d8071d | Iustin Pop | let gdata = serializeGroups gl |
160 | e4d8071d | Iustin Pop | ndata = serializeNodes gl nl |
161 | 4a273e97 | Iustin Pop | idata = serializeInstances nl il |
162 | b37f4a76 | Iustin Pop | pdata = serializeAllIPolicies cpol gl |
163 | 716c6be5 | Iustin Pop | -- note: not using 'unlines' as that adds too many newlines |
164 | b37f4a76 | Iustin Pop | in intercalate "\n" [gdata, ndata, idata, unlines ctags, pdata] |
165 | 4a273e97 | Iustin Pop | |
166 | 525bfb36 | Iustin Pop | -- * Parsing functions |
167 | 525bfb36 | Iustin Pop | |
168 | a679e9dc | Iustin Pop | -- | Load a group from a field list. |
169 | 525bfb36 | Iustin Pop | loadGroup :: (Monad m) => [String] |
170 | 525bfb36 | Iustin Pop | -> m (String, Group.Group) -- ^ The result, a tuple of group |
171 | 525bfb36 | Iustin Pop | -- UUID and group object |
172 | 6b6e335b | Dato Simó | loadGroup [name, gid, apol, tags] = do |
173 | 5f828ce4 | Agata Murawska | xapol <- allocPolicyFromRaw apol |
174 | 6b6e335b | Dato Simó | let xtags = commaSplit tags |
175 | 6b6e335b | Dato Simó | return (gid, Group.create name gid xapol defIPolicy xtags) |
176 | a679e9dc | Iustin Pop | |
177 | a679e9dc | Iustin Pop | loadGroup s = fail $ "Invalid/incomplete group data: '" ++ show s ++ "'" |
178 | a679e9dc | Iustin Pop | |
179 | 9188aeef | Iustin Pop | -- | Load a node from a field list. |
180 | 525bfb36 | Iustin Pop | loadNode :: (Monad m) => |
181 | 525bfb36 | Iustin Pop | NameAssoc -- ^ Association list with current groups |
182 | 525bfb36 | Iustin Pop | -> [String] -- ^ Input data as a list of fields |
183 | 525bfb36 | Iustin Pop | -> m (String, Node.Node) -- ^ The result, a tuple o node name |
184 | 525bfb36 | Iustin Pop | -- and node object |
185 | f951bd09 | Iustin Pop | loadNode ktg [name, tm, nm, fm, td, fd, tc, fo, gu, spindles] = do |
186 | 10ef6b4e | Iustin Pop | gdx <- lookupGroup ktg name gu |
187 | 040afc35 | Iustin Pop | new_node <- |
188 | 2cdaf225 | Iustin Pop | if "?" `elem` [tm,nm,fm,td,fd,tc] || fo == "Y" then |
189 | 8bc34c7b | Iustin Pop | return $ Node.create name 0 0 0 0 0 0 True 0 gdx |
190 | 040afc35 | Iustin Pop | else do |
191 | 040afc35 | Iustin Pop | vtm <- tryRead name tm |
192 | 040afc35 | Iustin Pop | vnm <- tryRead name nm |
193 | 040afc35 | Iustin Pop | vfm <- tryRead name fm |
194 | 040afc35 | Iustin Pop | vtd <- tryRead name td |
195 | 040afc35 | Iustin Pop | vfd <- tryRead name fd |
196 | 1a82215d | Iustin Pop | vtc <- tryRead name tc |
197 | f951bd09 | Iustin Pop | vspindles <- tryRead name spindles |
198 | f951bd09 | Iustin Pop | return $ Node.create name vtm vnm vfm vtd vfd vtc False vspindles gdx |
199 | 040afc35 | Iustin Pop | return (name, new_node) |
200 | f951bd09 | Iustin Pop | |
201 | f951bd09 | Iustin Pop | loadNode ktg [name, tm, nm, fm, td, fd, tc, fo, gu] = |
202 | f951bd09 | Iustin Pop | loadNode ktg [name, tm, nm, fm, td, fd, tc, fo, gu, "1"] |
203 | f951bd09 | Iustin Pop | |
204 | 10ef6b4e | Iustin Pop | loadNode _ s = fail $ "Invalid/incomplete node data: '" ++ show s ++ "'" |
205 | 040afc35 | Iustin Pop | |
206 | 9188aeef | Iustin Pop | -- | Load an instance from a field list. |
207 | 6429e8d8 | Iustin Pop | loadInst :: NameAssoc -- ^ Association list with the current nodes |
208 | 6429e8d8 | Iustin Pop | -> [String] -- ^ Input data as a list of fields |
209 | 6429e8d8 | Iustin Pop | -> Result (String, Instance.Instance) -- ^ A tuple of |
210 | 6429e8d8 | Iustin Pop | -- instance name and |
211 | 6429e8d8 | Iustin Pop | -- the instance object |
212 | 6429e8d8 | Iustin Pop | loadInst ktn [ name, mem, dsk, vcpus, status, auto_bal, pnode, snode |
213 | 52cc1370 | René Nussbaumer | , dt, tags, su ] = do |
214 | 040afc35 | Iustin Pop | pidx <- lookupNode ktn name pnode |
215 | 3603605a | Iustin Pop | sidx <- if null snode |
216 | 3603605a | Iustin Pop | then return Node.noSecondary |
217 | 3603605a | Iustin Pop | else lookupNode ktn name snode |
218 | 040afc35 | Iustin Pop | vmem <- tryRead name mem |
219 | 040afc35 | Iustin Pop | vdsk <- tryRead name dsk |
220 | d752eb39 | Iustin Pop | vvcpus <- tryRead name vcpus |
221 | 7dd14211 | Agata Murawska | vstatus <- instanceStatusFromRaw status |
222 | bc782180 | Iustin Pop | auto_balance <- case auto_bal of |
223 | bc782180 | Iustin Pop | "Y" -> return True |
224 | bc782180 | Iustin Pop | "N" -> return False |
225 | bc782180 | Iustin Pop | _ -> fail $ "Invalid auto_balance value '" ++ auto_bal ++ |
226 | bc782180 | Iustin Pop | "' for instance " ++ name |
227 | 2c9336a4 | Iustin Pop | disk_template <- annotateResult ("Instance " ++ name) |
228 | 5f828ce4 | Agata Murawska | (diskTemplateFromRaw dt) |
229 | ec629280 | René Nussbaumer | spindle_use <- tryRead name su |
230 | 2cdaf225 | Iustin Pop | when (sidx == pidx) . fail $ "Instance " ++ name ++ |
231 | 040afc35 | Iustin Pop | " has same primary and secondary node - " ++ pnode |
232 | b37f4a76 | Iustin Pop | let vtags = commaSplit tags |
233 | 7dd14211 | Agata Murawska | newinst = Instance.create name vmem vdsk vvcpus vstatus vtags |
234 | ec629280 | René Nussbaumer | auto_balance pidx sidx disk_template spindle_use |
235 | 040afc35 | Iustin Pop | return (name, newinst) |
236 | 52cc1370 | René Nussbaumer | |
237 | 52cc1370 | René Nussbaumer | loadInst ktn [ name, mem, dsk, vcpus, status, auto_bal, pnode, snode |
238 | 52cc1370 | René Nussbaumer | , dt, tags ] = loadInst ktn [ name, mem, dsk, vcpus, status, |
239 | 52cc1370 | René Nussbaumer | auto_bal, pnode, snode, dt, tags, |
240 | 52cc1370 | René Nussbaumer | "1" ] |
241 | 9f6dcdea | Iustin Pop | loadInst _ s = fail $ "Invalid/incomplete instance data: '" ++ show s ++ "'" |
242 | 040afc35 | Iustin Pop | |
243 | b37f4a76 | Iustin Pop | -- | Loads a spec from a field list. |
244 | b37f4a76 | Iustin Pop | loadISpec :: String -> [String] -> Result ISpec |
245 | d953a965 | René Nussbaumer | loadISpec owner [mem_s, cpu_c, dsk_s, dsk_c, nic_c, su] = do |
246 | b37f4a76 | Iustin Pop | xmem_s <- tryRead (owner ++ "/memsize") mem_s |
247 | b37f4a76 | Iustin Pop | xcpu_c <- tryRead (owner ++ "/cpucount") cpu_c |
248 | b37f4a76 | Iustin Pop | xdsk_s <- tryRead (owner ++ "/disksize") dsk_s |
249 | b37f4a76 | Iustin Pop | xdsk_c <- tryRead (owner ++ "/diskcount") dsk_c |
250 | b37f4a76 | Iustin Pop | xnic_c <- tryRead (owner ++ "/niccount") nic_c |
251 | d953a965 | René Nussbaumer | xsu <- tryRead (owner ++ "/spindleuse") su |
252 | d953a965 | René Nussbaumer | return $ ISpec xmem_s xcpu_c xdsk_s xdsk_c xnic_c xsu |
253 | b37f4a76 | Iustin Pop | loadISpec owner s = fail $ "Invalid ispec data for " ++ owner ++ ": " ++ show s |
254 | b37f4a76 | Iustin Pop | |
255 | b37f4a76 | Iustin Pop | -- | Loads an ipolicy from a field list. |
256 | b37f4a76 | Iustin Pop | loadIPolicy :: [String] -> Result (String, IPolicy) |
257 | c22d4dd4 | Iustin Pop | loadIPolicy [owner, stdspec, minspec, maxspec, dtemplates, |
258 | c22d4dd4 | Iustin Pop | vcpu_ratio, spindle_ratio] = do |
259 | b37f4a76 | Iustin Pop | xstdspec <- loadISpec (owner ++ "/stdspec") (commaSplit stdspec) |
260 | b37f4a76 | Iustin Pop | xminspec <- loadISpec (owner ++ "/minspec") (commaSplit minspec) |
261 | b37f4a76 | Iustin Pop | xmaxspec <- loadISpec (owner ++ "/maxspec") (commaSplit maxspec) |
262 | b37f4a76 | Iustin Pop | xdts <- mapM diskTemplateFromRaw $ commaSplit dtemplates |
263 | e8fa4ff6 | Iustin Pop | xvcpu_ratio <- tryRead (owner ++ "/vcpu_ratio") vcpu_ratio |
264 | c22d4dd4 | Iustin Pop | xspindle_ratio <- tryRead (owner ++ "/spindle_ratio") spindle_ratio |
265 | 5b11f8db | Iustin Pop | return (owner, |
266 | 5b11f8db | Iustin Pop | IPolicy xstdspec xminspec xmaxspec xdts xvcpu_ratio xspindle_ratio) |
267 | b37f4a76 | Iustin Pop | loadIPolicy s = fail $ "Invalid ipolicy data: '" ++ show s ++ "'" |
268 | b37f4a76 | Iustin Pop | |
269 | b37f4a76 | Iustin Pop | loadOnePolicy :: (IPolicy, Group.List) -> String |
270 | b37f4a76 | Iustin Pop | -> Result (IPolicy, Group.List) |
271 | b37f4a76 | Iustin Pop | loadOnePolicy (cpol, gl) line = do |
272 | b37f4a76 | Iustin Pop | (owner, ipol) <- loadIPolicy (sepSplit '|' line) |
273 | b37f4a76 | Iustin Pop | case owner of |
274 | b37f4a76 | Iustin Pop | "" -> return (ipol, gl) -- this is a cluster policy (no owner) |
275 | b37f4a76 | Iustin Pop | _ -> do |
276 | b37f4a76 | Iustin Pop | grp <- Container.findByName gl owner |
277 | b37f4a76 | Iustin Pop | let grp' = grp { Group.iPolicy = ipol } |
278 | b37f4a76 | Iustin Pop | gl' = Container.add (Group.idx grp') grp' gl |
279 | b37f4a76 | Iustin Pop | return (cpol, gl') |
280 | b37f4a76 | Iustin Pop | |
281 | b37f4a76 | Iustin Pop | -- | Loads all policies from the policy section |
282 | b37f4a76 | Iustin Pop | loadAllIPolicies :: Group.List -> [String] -> Result (IPolicy, Group.List) |
283 | b37f4a76 | Iustin Pop | loadAllIPolicies gl = |
284 | b37f4a76 | Iustin Pop | foldM loadOnePolicy (defIPolicy, gl) |
285 | b37f4a76 | Iustin Pop | |
286 | 9188aeef | Iustin Pop | -- | Convert newline and delimiter-separated text. |
287 | 9188aeef | Iustin Pop | -- |
288 | 9188aeef | Iustin Pop | -- This function converts a text in tabular format as generated by |
289 | 9188aeef | Iustin Pop | -- @gnt-instance list@ and @gnt-node list@ to a list of objects using |
290 | 9188aeef | Iustin Pop | -- a supplied conversion function. |
291 | 497e30a1 | Iustin Pop | loadTabular :: (Monad m, Element a) => |
292 | 525bfb36 | Iustin Pop | [String] -- ^ Input data, as a list of lines |
293 | 525bfb36 | Iustin Pop | -> ([String] -> m (String, a)) -- ^ Conversion function |
294 | 525bfb36 | Iustin Pop | -> m ( NameAssoc |
295 | 525bfb36 | Iustin Pop | , Container.Container a ) -- ^ A tuple of an |
296 | 525bfb36 | Iustin Pop | -- association list (name |
297 | 525bfb36 | Iustin Pop | -- to object) and a set as |
298 | 525bfb36 | Iustin Pop | -- used in |
299 | 525bfb36 | Iustin Pop | -- "Ganeti.HTools.Container" |
300 | 525bfb36 | Iustin Pop | |
301 | f5197d89 | Iustin Pop | loadTabular lines_data convert_fn = do |
302 | f5197d89 | Iustin Pop | let rows = map (sepSplit '|') lines_data |
303 | 040afc35 | Iustin Pop | kerows <- mapM convert_fn rows |
304 | 497e30a1 | Iustin Pop | return $ assignIndices kerows |
305 | 040afc35 | Iustin Pop | |
306 | dadfc261 | Iustin Pop | -- | Load the cluser data from disk. |
307 | 525bfb36 | Iustin Pop | -- |
308 | 525bfb36 | Iustin Pop | -- This is an alias to 'readFile' just for consistency with the other |
309 | 525bfb36 | Iustin Pop | -- modules. |
310 | 525bfb36 | Iustin Pop | readData :: String -- ^ Path to the text file |
311 | 525bfb36 | Iustin Pop | -> IO String -- ^ Contents of the file |
312 | dadfc261 | Iustin Pop | readData = readFile |
313 | dadfc261 | Iustin Pop | |
314 | 16c2369c | Iustin Pop | -- | Builds the cluster data from text input. |
315 | dadfc261 | Iustin Pop | parseData :: String -- ^ Text data |
316 | f4f6eb0b | Iustin Pop | -> Result ClusterData |
317 | dadfc261 | Iustin Pop | parseData fdata = do |
318 | 16c2369c | Iustin Pop | let flines = lines fdata |
319 | b37f4a76 | Iustin Pop | (glines, nlines, ilines, ctags, pollines) <- |
320 | a604456d | Iustin Pop | case sepSplit "" flines of |
321 | b37f4a76 | Iustin Pop | [a, b, c, d, e] -> Ok (a, b, c, d, e) |
322 | b37f4a76 | Iustin Pop | [a, b, c, d] -> Ok (a, b, c, d, []) |
323 | a604456d | Iustin Pop | xs -> Bad $ printf "Invalid format of the input file: %d sections\ |
324 | b37f4a76 | Iustin Pop | \ instead of 4 or 5" (length xs) |
325 | b0b8337a | Dato Simó | {- group file: name uuid alloc_policy -} |
326 | 10ef6b4e | Iustin Pop | (ktg, gl) <- loadTabular glines loadGroup |
327 | b0b8337a | Dato Simó | {- node file: name t_mem n_mem f_mem t_disk f_disk t_cpu offline grp_uuid |
328 | b0b8337a | Dato Simó | spindles -} |
329 | a604456d | Iustin Pop | (ktn, nl) <- loadTabular nlines (loadNode ktg) |
330 | b0b8337a | Dato Simó | {- instance file: name mem disk vcpus status auto_bal pnode snode |
331 | b0b8337a | Dato Simó | disk_template tags spindle_use -} |
332 | a604456d | Iustin Pop | (_, il) <- loadTabular ilines (loadInst ktn) |
333 | afcd5a0b | Iustin Pop | {- the tags are simply line-based, no processing needed -} |
334 | b37f4a76 | Iustin Pop | {- process policies -} |
335 | b37f4a76 | Iustin Pop | (cpol, gl') <- loadAllIPolicies gl pollines |
336 | b37f4a76 | Iustin Pop | return (ClusterData gl' nl il ctags cpol) |
337 | dadfc261 | Iustin Pop | |
338 | 525bfb36 | Iustin Pop | -- | Top level function for data loading. |
339 | dadfc261 | Iustin Pop | loadData :: String -- ^ Path to the text file |
340 | f4f6eb0b | Iustin Pop | -> IO (Result ClusterData) |
341 | 2a8e2dc9 | Iustin Pop | loadData = fmap parseData . readData |