root / htools / Ganeti / HTools / Text.hs @ e7b4d0e1
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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 | 040afc35 | Iustin Pop | module Ganeti.HTools.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 | 040afc35 | Iustin Pop | import Ganeti.HTools.Utils |
51 | 040afc35 | Iustin Pop | import Ganeti.HTools.Loader |
52 | e4c5beaf | Iustin Pop | import Ganeti.HTools.Types |
53 | 3bf75b7d | Iustin Pop | import qualified Ganeti.HTools.Container as Container |
54 | a679e9dc | Iustin Pop | import qualified Ganeti.HTools.Group as Group |
55 | 040afc35 | Iustin Pop | import qualified Ganeti.HTools.Node as Node |
56 | 040afc35 | Iustin Pop | import qualified Ganeti.HTools.Instance as Instance |
57 | 040afc35 | Iustin Pop | |
58 | b37f4a76 | Iustin Pop | -- * Helper functions |
59 | b37f4a76 | Iustin Pop | |
60 | b37f4a76 | Iustin Pop | -- | Simple wrapper over sepSplit |
61 | b37f4a76 | Iustin Pop | commaSplit :: String -> [String] |
62 | b37f4a76 | Iustin Pop | commaSplit = sepSplit ',' |
63 | b37f4a76 | Iustin Pop | |
64 | 525bfb36 | Iustin Pop | -- * Serialisation functions |
65 | 525bfb36 | Iustin Pop | |
66 | 525bfb36 | Iustin Pop | -- | Serialize a single group. |
67 | e4d8071d | Iustin Pop | serializeGroup :: Group.Group -> String |
68 | e4d8071d | Iustin Pop | serializeGroup grp = |
69 | ebf38064 | Iustin Pop | printf "%s|%s|%s" (Group.name grp) (Group.uuid grp) |
70 | ebf38064 | Iustin Pop | (allocPolicyToRaw (Group.allocPolicy grp)) |
71 | e4d8071d | Iustin Pop | |
72 | 525bfb36 | Iustin Pop | -- | Generate group file data from a group list. |
73 | e4d8071d | Iustin Pop | serializeGroups :: Group.List -> String |
74 | e4d8071d | Iustin Pop | serializeGroups = unlines . map serializeGroup . Container.elems |
75 | e4d8071d | Iustin Pop | |
76 | 525bfb36 | Iustin Pop | -- | Serialize a single node. |
77 | 525bfb36 | Iustin Pop | serializeNode :: Group.List -- ^ The list of groups (needed for group uuid) |
78 | 525bfb36 | Iustin Pop | -> Node.Node -- ^ The node to be serialised |
79 | 525bfb36 | Iustin Pop | -> String |
80 | 10ef6b4e | Iustin Pop | serializeNode gl node = |
81 | f951bd09 | Iustin Pop | printf "%s|%.0f|%d|%d|%.0f|%d|%.0f|%c|%s|%d" (Node.name node) |
82 | ebf38064 | Iustin Pop | (Node.tMem node) (Node.nMem node) (Node.fMem node) |
83 | ebf38064 | Iustin Pop | (Node.tDsk node) (Node.fDsk node) (Node.tCpu node) |
84 | ebf38064 | Iustin Pop | (if Node.offline node then 'Y' else 'N') |
85 | ebf38064 | Iustin Pop | (Group.uuid grp) |
86 | f951bd09 | Iustin Pop | (Node.spindleCount node) |
87 | 10ef6b4e | Iustin Pop | where grp = Container.find (Node.group node) gl |
88 | 3bf75b7d | Iustin Pop | |
89 | 525bfb36 | Iustin Pop | -- | Generate node file data from node objects. |
90 | 10ef6b4e | Iustin Pop | serializeNodes :: Group.List -> Node.List -> String |
91 | 10ef6b4e | Iustin Pop | serializeNodes gl = unlines . map (serializeNode gl) . Container.elems |
92 | 3bf75b7d | Iustin Pop | |
93 | 525bfb36 | Iustin Pop | -- | Serialize a single instance. |
94 | 525bfb36 | Iustin Pop | serializeInstance :: Node.List -- ^ The node list (needed for |
95 | 525bfb36 | Iustin Pop | -- node names) |
96 | 525bfb36 | Iustin Pop | -> Instance.Instance -- ^ The instance to be serialised |
97 | 525bfb36 | Iustin Pop | -> String |
98 | 3bf75b7d | Iustin Pop | serializeInstance nl inst = |
99 | ebf38064 | Iustin Pop | let iname = Instance.name inst |
100 | ebf38064 | Iustin Pop | pnode = Container.nameOf nl (Instance.pNode inst) |
101 | ebf38064 | Iustin Pop | sidx = Instance.sNode inst |
102 | ebf38064 | Iustin Pop | snode = (if sidx == Node.noSecondary |
103 | ebf38064 | Iustin Pop | then "" |
104 | ebf38064 | Iustin Pop | else Container.nameOf nl sidx) |
105 | ebf38064 | Iustin Pop | in printf "%s|%d|%d|%d|%s|%s|%s|%s|%s|%s" |
106 | ebf38064 | Iustin Pop | iname (Instance.mem inst) (Instance.dsk inst) |
107 | ebf38064 | Iustin Pop | (Instance.vcpus inst) (instanceStatusToRaw (Instance.runSt inst)) |
108 | ebf38064 | Iustin Pop | (if Instance.autoBalance inst then "Y" else "N") |
109 | ebf38064 | Iustin Pop | pnode snode (diskTemplateToRaw (Instance.diskTemplate inst)) |
110 | ebf38064 | Iustin Pop | (intercalate "," (Instance.tags inst)) |
111 | 3bf75b7d | Iustin Pop | |
112 | 525bfb36 | Iustin Pop | -- | Generate instance file data from instance objects. |
113 | 3bf75b7d | Iustin Pop | serializeInstances :: Node.List -> Instance.List -> String |
114 | 3bf75b7d | Iustin Pop | serializeInstances nl = |
115 | ebf38064 | Iustin Pop | unlines . map (serializeInstance nl) . Container.elems |
116 | 3bf75b7d | Iustin Pop | |
117 | b37f4a76 | Iustin Pop | -- | Generate a spec data from a given ISpec object. |
118 | b37f4a76 | Iustin Pop | serializeISpec :: ISpec -> String |
119 | b37f4a76 | Iustin Pop | serializeISpec ispec = |
120 | b37f4a76 | Iustin Pop | -- this needs to be kept in sync with the object definition |
121 | b37f4a76 | Iustin Pop | let ISpec mem_s cpu_c disk_s disk_c nic_c = ispec |
122 | b37f4a76 | Iustin Pop | strings = [show mem_s, show cpu_c, show disk_s, show disk_c, show nic_c] |
123 | b37f4a76 | Iustin Pop | in intercalate "," strings |
124 | b37f4a76 | Iustin Pop | |
125 | b37f4a76 | Iustin Pop | -- | Generate disk template data. |
126 | b37f4a76 | Iustin Pop | serializeDiskTemplates :: [DiskTemplate] -> String |
127 | b37f4a76 | Iustin Pop | serializeDiskTemplates = intercalate "," . map diskTemplateToRaw |
128 | b37f4a76 | Iustin Pop | |
129 | b37f4a76 | Iustin Pop | -- | Generate policy data from a given policy object. |
130 | b37f4a76 | Iustin Pop | serializeIPolicy :: String -> IPolicy -> String |
131 | b37f4a76 | Iustin Pop | serializeIPolicy owner ipol = |
132 | c22d4dd4 | Iustin Pop | let IPolicy stdspec minspec maxspec dts vcpu_ratio spindle_ratio = ipol |
133 | b37f4a76 | Iustin Pop | strings = [ owner |
134 | b37f4a76 | Iustin Pop | , serializeISpec stdspec |
135 | b37f4a76 | Iustin Pop | , serializeISpec minspec |
136 | b37f4a76 | Iustin Pop | , serializeISpec maxspec |
137 | b37f4a76 | Iustin Pop | , serializeDiskTemplates dts |
138 | e8fa4ff6 | Iustin Pop | , show vcpu_ratio |
139 | c22d4dd4 | Iustin Pop | , show spindle_ratio |
140 | b37f4a76 | Iustin Pop | ] |
141 | b37f4a76 | Iustin Pop | in intercalate "|" strings |
142 | b37f4a76 | Iustin Pop | |
143 | b37f4a76 | Iustin Pop | -- | Generates the entire ipolicy section from the cluster and group |
144 | b37f4a76 | Iustin Pop | -- objects. |
145 | b37f4a76 | Iustin Pop | serializeAllIPolicies :: IPolicy -> Group.List -> String |
146 | b37f4a76 | Iustin Pop | serializeAllIPolicies cpol gl = |
147 | b37f4a76 | Iustin Pop | let groups = Container.elems gl |
148 | b37f4a76 | Iustin Pop | allpolicies = [("", cpol)] ++ |
149 | b37f4a76 | Iustin Pop | map (\g -> (Group.name g, Group.iPolicy g)) groups |
150 | b37f4a76 | Iustin Pop | strings = map (uncurry serializeIPolicy) allpolicies |
151 | b37f4a76 | Iustin Pop | in unlines strings |
152 | b37f4a76 | Iustin Pop | |
153 | 525bfb36 | Iustin Pop | -- | Generate complete cluster data from node and instance lists. |
154 | c0e31451 | Iustin Pop | serializeCluster :: ClusterData -> String |
155 | b37f4a76 | Iustin Pop | serializeCluster (ClusterData gl nl il ctags cpol) = |
156 | e4d8071d | Iustin Pop | let gdata = serializeGroups gl |
157 | e4d8071d | Iustin Pop | ndata = serializeNodes gl nl |
158 | 4a273e97 | Iustin Pop | idata = serializeInstances nl il |
159 | b37f4a76 | Iustin Pop | pdata = serializeAllIPolicies cpol gl |
160 | 716c6be5 | Iustin Pop | -- note: not using 'unlines' as that adds too many newlines |
161 | b37f4a76 | Iustin Pop | in intercalate "\n" [gdata, ndata, idata, unlines ctags, pdata] |
162 | 4a273e97 | Iustin Pop | |
163 | 525bfb36 | Iustin Pop | -- * Parsing functions |
164 | 525bfb36 | Iustin Pop | |
165 | a679e9dc | Iustin Pop | -- | Load a group from a field list. |
166 | 525bfb36 | Iustin Pop | loadGroup :: (Monad m) => [String] |
167 | 525bfb36 | Iustin Pop | -> m (String, Group.Group) -- ^ The result, a tuple of group |
168 | 525bfb36 | Iustin Pop | -- UUID and group object |
169 | f4c7d37a | Iustin Pop | loadGroup [name, gid, apol] = do |
170 | 5f828ce4 | Agata Murawska | xapol <- allocPolicyFromRaw apol |
171 | 6cff91f5 | Iustin Pop | return (gid, Group.create name gid xapol defIPolicy) |
172 | a679e9dc | Iustin Pop | |
173 | a679e9dc | Iustin Pop | loadGroup s = fail $ "Invalid/incomplete group data: '" ++ show s ++ "'" |
174 | a679e9dc | Iustin Pop | |
175 | 9188aeef | Iustin Pop | -- | Load a node from a field list. |
176 | 525bfb36 | Iustin Pop | loadNode :: (Monad m) => |
177 | 525bfb36 | Iustin Pop | NameAssoc -- ^ Association list with current groups |
178 | 525bfb36 | Iustin Pop | -> [String] -- ^ Input data as a list of fields |
179 | 525bfb36 | Iustin Pop | -> m (String, Node.Node) -- ^ The result, a tuple o node name |
180 | 525bfb36 | Iustin Pop | -- and node object |
181 | f951bd09 | Iustin Pop | loadNode ktg [name, tm, nm, fm, td, fd, tc, fo, gu, spindles] = do |
182 | 10ef6b4e | Iustin Pop | gdx <- lookupGroup ktg name gu |
183 | 040afc35 | Iustin Pop | new_node <- |
184 | 1a82215d | Iustin Pop | if any (== "?") [tm,nm,fm,td,fd,tc] || fo == "Y" then |
185 | 8bc34c7b | Iustin Pop | return $ Node.create name 0 0 0 0 0 0 True 0 gdx |
186 | 040afc35 | Iustin Pop | else do |
187 | 040afc35 | Iustin Pop | vtm <- tryRead name tm |
188 | 040afc35 | Iustin Pop | vnm <- tryRead name nm |
189 | 040afc35 | Iustin Pop | vfm <- tryRead name fm |
190 | 040afc35 | Iustin Pop | vtd <- tryRead name td |
191 | 040afc35 | Iustin Pop | vfd <- tryRead name fd |
192 | 1a82215d | Iustin Pop | vtc <- tryRead name tc |
193 | f951bd09 | Iustin Pop | vspindles <- tryRead name spindles |
194 | f951bd09 | Iustin Pop | return $ Node.create name vtm vnm vfm vtd vfd vtc False vspindles gdx |
195 | 040afc35 | Iustin Pop | return (name, new_node) |
196 | f951bd09 | Iustin Pop | |
197 | f951bd09 | Iustin Pop | loadNode ktg [name, tm, nm, fm, td, fd, tc, fo, gu] = |
198 | f951bd09 | Iustin Pop | loadNode ktg [name, tm, nm, fm, td, fd, tc, fo, gu, "1"] |
199 | f951bd09 | Iustin Pop | |
200 | 10ef6b4e | Iustin Pop | loadNode _ s = fail $ "Invalid/incomplete node data: '" ++ show s ++ "'" |
201 | 040afc35 | Iustin Pop | |
202 | 9188aeef | Iustin Pop | -- | Load an instance from a field list. |
203 | 6429e8d8 | Iustin Pop | loadInst :: NameAssoc -- ^ Association list with the current nodes |
204 | 6429e8d8 | Iustin Pop | -> [String] -- ^ Input data as a list of fields |
205 | 6429e8d8 | Iustin Pop | -> Result (String, Instance.Instance) -- ^ A tuple of |
206 | 6429e8d8 | Iustin Pop | -- instance name and |
207 | 6429e8d8 | Iustin Pop | -- the instance object |
208 | 6429e8d8 | Iustin Pop | loadInst ktn [ name, mem, dsk, vcpus, status, auto_bal, pnode, snode |
209 | 6429e8d8 | Iustin Pop | , dt, tags ] = do |
210 | 040afc35 | Iustin Pop | pidx <- lookupNode ktn name pnode |
211 | 3603605a | Iustin Pop | sidx <- if null snode |
212 | 3603605a | Iustin Pop | then return Node.noSecondary |
213 | 3603605a | Iustin Pop | else lookupNode ktn name snode |
214 | 040afc35 | Iustin Pop | vmem <- tryRead name mem |
215 | 040afc35 | Iustin Pop | vdsk <- tryRead name dsk |
216 | d752eb39 | Iustin Pop | vvcpus <- tryRead name vcpus |
217 | 7dd14211 | Agata Murawska | vstatus <- instanceStatusFromRaw status |
218 | bc782180 | Iustin Pop | auto_balance <- case auto_bal of |
219 | bc782180 | Iustin Pop | "Y" -> return True |
220 | bc782180 | Iustin Pop | "N" -> return False |
221 | bc782180 | Iustin Pop | _ -> fail $ "Invalid auto_balance value '" ++ auto_bal ++ |
222 | bc782180 | Iustin Pop | "' for instance " ++ name |
223 | 2c9336a4 | Iustin Pop | disk_template <- annotateResult ("Instance " ++ name) |
224 | 5f828ce4 | Agata Murawska | (diskTemplateFromRaw dt) |
225 | 040afc35 | Iustin Pop | when (sidx == pidx) $ fail $ "Instance " ++ name ++ |
226 | 040afc35 | Iustin Pop | " has same primary and secondary node - " ++ pnode |
227 | b37f4a76 | Iustin Pop | let vtags = commaSplit tags |
228 | 7dd14211 | Agata Murawska | newinst = Instance.create name vmem vdsk vvcpus vstatus vtags |
229 | 6429e8d8 | Iustin Pop | auto_balance pidx sidx disk_template |
230 | 040afc35 | Iustin Pop | return (name, newinst) |
231 | 9f6dcdea | Iustin Pop | loadInst _ s = fail $ "Invalid/incomplete instance data: '" ++ show s ++ "'" |
232 | 040afc35 | Iustin Pop | |
233 | b37f4a76 | Iustin Pop | -- | Loads a spec from a field list. |
234 | b37f4a76 | Iustin Pop | loadISpec :: String -> [String] -> Result ISpec |
235 | b37f4a76 | Iustin Pop | loadISpec owner [mem_s, cpu_c, dsk_s, dsk_c, nic_c] = do |
236 | b37f4a76 | Iustin Pop | xmem_s <- tryRead (owner ++ "/memsize") mem_s |
237 | b37f4a76 | Iustin Pop | xcpu_c <- tryRead (owner ++ "/cpucount") cpu_c |
238 | b37f4a76 | Iustin Pop | xdsk_s <- tryRead (owner ++ "/disksize") dsk_s |
239 | b37f4a76 | Iustin Pop | xdsk_c <- tryRead (owner ++ "/diskcount") dsk_c |
240 | b37f4a76 | Iustin Pop | xnic_c <- tryRead (owner ++ "/niccount") nic_c |
241 | b37f4a76 | Iustin Pop | return $ ISpec xmem_s xcpu_c xdsk_s xdsk_c xnic_c |
242 | b37f4a76 | Iustin Pop | loadISpec owner s = fail $ "Invalid ispec data for " ++ owner ++ ": " ++ show s |
243 | b37f4a76 | Iustin Pop | |
244 | b37f4a76 | Iustin Pop | -- | Loads an ipolicy from a field list. |
245 | b37f4a76 | Iustin Pop | loadIPolicy :: [String] -> Result (String, IPolicy) |
246 | c22d4dd4 | Iustin Pop | loadIPolicy [owner, stdspec, minspec, maxspec, dtemplates, |
247 | c22d4dd4 | Iustin Pop | vcpu_ratio, spindle_ratio] = do |
248 | b37f4a76 | Iustin Pop | xstdspec <- loadISpec (owner ++ "/stdspec") (commaSplit stdspec) |
249 | b37f4a76 | Iustin Pop | xminspec <- loadISpec (owner ++ "/minspec") (commaSplit minspec) |
250 | b37f4a76 | Iustin Pop | xmaxspec <- loadISpec (owner ++ "/maxspec") (commaSplit maxspec) |
251 | b37f4a76 | Iustin Pop | xdts <- mapM diskTemplateFromRaw $ commaSplit dtemplates |
252 | e8fa4ff6 | Iustin Pop | xvcpu_ratio <- tryRead (owner ++ "/vcpu_ratio") vcpu_ratio |
253 | c22d4dd4 | Iustin Pop | xspindle_ratio <- tryRead (owner ++ "/spindle_ratio") spindle_ratio |
254 | c22d4dd4 | Iustin Pop | return $ (owner, IPolicy xstdspec xminspec xmaxspec xdts |
255 | c22d4dd4 | Iustin Pop | xvcpu_ratio xspindle_ratio) |
256 | b37f4a76 | Iustin Pop | loadIPolicy s = fail $ "Invalid ipolicy data: '" ++ show s ++ "'" |
257 | b37f4a76 | Iustin Pop | |
258 | b37f4a76 | Iustin Pop | loadOnePolicy :: (IPolicy, Group.List) -> String |
259 | b37f4a76 | Iustin Pop | -> Result (IPolicy, Group.List) |
260 | b37f4a76 | Iustin Pop | loadOnePolicy (cpol, gl) line = do |
261 | b37f4a76 | Iustin Pop | (owner, ipol) <- loadIPolicy (sepSplit '|' line) |
262 | b37f4a76 | Iustin Pop | case owner of |
263 | b37f4a76 | Iustin Pop | "" -> return (ipol, gl) -- this is a cluster policy (no owner) |
264 | b37f4a76 | Iustin Pop | _ -> do |
265 | b37f4a76 | Iustin Pop | grp <- Container.findByName gl owner |
266 | b37f4a76 | Iustin Pop | let grp' = grp { Group.iPolicy = ipol } |
267 | b37f4a76 | Iustin Pop | gl' = Container.add (Group.idx grp') grp' gl |
268 | b37f4a76 | Iustin Pop | return (cpol, gl') |
269 | b37f4a76 | Iustin Pop | |
270 | b37f4a76 | Iustin Pop | -- | Loads all policies from the policy section |
271 | b37f4a76 | Iustin Pop | loadAllIPolicies :: Group.List -> [String] -> Result (IPolicy, Group.List) |
272 | b37f4a76 | Iustin Pop | loadAllIPolicies gl = |
273 | b37f4a76 | Iustin Pop | foldM loadOnePolicy (defIPolicy, gl) |
274 | b37f4a76 | Iustin Pop | |
275 | 9188aeef | Iustin Pop | -- | Convert newline and delimiter-separated text. |
276 | 9188aeef | Iustin Pop | -- |
277 | 9188aeef | Iustin Pop | -- This function converts a text in tabular format as generated by |
278 | 9188aeef | Iustin Pop | -- @gnt-instance list@ and @gnt-node list@ to a list of objects using |
279 | 9188aeef | Iustin Pop | -- a supplied conversion function. |
280 | 497e30a1 | Iustin Pop | loadTabular :: (Monad m, Element a) => |
281 | 525bfb36 | Iustin Pop | [String] -- ^ Input data, as a list of lines |
282 | 525bfb36 | Iustin Pop | -> ([String] -> m (String, a)) -- ^ Conversion function |
283 | 525bfb36 | Iustin Pop | -> m ( NameAssoc |
284 | 525bfb36 | Iustin Pop | , Container.Container a ) -- ^ A tuple of an |
285 | 525bfb36 | Iustin Pop | -- association list (name |
286 | 525bfb36 | Iustin Pop | -- to object) and a set as |
287 | 525bfb36 | Iustin Pop | -- used in |
288 | 525bfb36 | Iustin Pop | -- "Ganeti.HTools.Container" |
289 | 525bfb36 | Iustin Pop | |
290 | f5197d89 | Iustin Pop | loadTabular lines_data convert_fn = do |
291 | f5197d89 | Iustin Pop | let rows = map (sepSplit '|') lines_data |
292 | 040afc35 | Iustin Pop | kerows <- mapM convert_fn rows |
293 | 497e30a1 | Iustin Pop | return $ assignIndices kerows |
294 | 040afc35 | Iustin Pop | |
295 | dadfc261 | Iustin Pop | -- | Load the cluser data from disk. |
296 | 525bfb36 | Iustin Pop | -- |
297 | 525bfb36 | Iustin Pop | -- This is an alias to 'readFile' just for consistency with the other |
298 | 525bfb36 | Iustin Pop | -- modules. |
299 | 525bfb36 | Iustin Pop | readData :: String -- ^ Path to the text file |
300 | 525bfb36 | Iustin Pop | -> IO String -- ^ Contents of the file |
301 | dadfc261 | Iustin Pop | readData = readFile |
302 | dadfc261 | Iustin Pop | |
303 | 16c2369c | Iustin Pop | -- | Builds the cluster data from text input. |
304 | dadfc261 | Iustin Pop | parseData :: String -- ^ Text data |
305 | f4f6eb0b | Iustin Pop | -> Result ClusterData |
306 | dadfc261 | Iustin Pop | parseData fdata = do |
307 | 16c2369c | Iustin Pop | let flines = lines fdata |
308 | b37f4a76 | Iustin Pop | (glines, nlines, ilines, ctags, pollines) <- |
309 | a604456d | Iustin Pop | case sepSplit "" flines of |
310 | b37f4a76 | Iustin Pop | [a, b, c, d, e] -> Ok (a, b, c, d, e) |
311 | b37f4a76 | Iustin Pop | [a, b, c, d] -> Ok (a, b, c, d, []) |
312 | a604456d | Iustin Pop | xs -> Bad $ printf "Invalid format of the input file: %d sections\ |
313 | b37f4a76 | Iustin Pop | \ instead of 4 or 5" (length xs) |
314 | a679e9dc | Iustin Pop | {- group file: name uuid -} |
315 | 10ef6b4e | Iustin Pop | (ktg, gl) <- loadTabular glines loadGroup |
316 | dadfc261 | Iustin Pop | {- node file: name t_mem n_mem f_mem t_disk f_disk -} |
317 | a604456d | Iustin Pop | (ktn, nl) <- loadTabular nlines (loadNode ktg) |
318 | dadfc261 | Iustin Pop | {- instance file: name mem disk status pnode snode -} |
319 | a604456d | Iustin Pop | (_, il) <- loadTabular ilines (loadInst ktn) |
320 | afcd5a0b | Iustin Pop | {- the tags are simply line-based, no processing needed -} |
321 | b37f4a76 | Iustin Pop | {- process policies -} |
322 | b37f4a76 | Iustin Pop | (cpol, gl') <- loadAllIPolicies gl pollines |
323 | b37f4a76 | Iustin Pop | return (ClusterData gl' nl il ctags cpol) |
324 | dadfc261 | Iustin Pop | |
325 | 525bfb36 | Iustin Pop | -- | Top level function for data loading. |
326 | dadfc261 | Iustin Pop | loadData :: String -- ^ Path to the text file |
327 | f4f6eb0b | Iustin Pop | -> IO (Result ClusterData) |
328 | 2a8e2dc9 | Iustin Pop | loadData = fmap parseData . readData |