root / hscan.hs @ db1bcfe8
History | View | Annotate | Download (6.1 kB)
1 |
{-| Scan clusters via RAPI and write instance/node data files. |
---|---|
2 |
|
3 |
-} |
4 |
|
5 |
module Main (main) where |
6 |
|
7 |
import Data.List |
8 |
import Data.Function |
9 |
import Data.Maybe(fromJust) |
10 |
import Monad |
11 |
import System |
12 |
import System.IO |
13 |
import System.FilePath |
14 |
import System.Console.GetOpt |
15 |
import qualified System |
16 |
|
17 |
import Text.Printf (printf) |
18 |
|
19 |
import qualified Ganeti.HTools.Container as Container |
20 |
import qualified Ganeti.HTools.Cluster as Cluster |
21 |
import qualified Ganeti.HTools.Node as Node |
22 |
import qualified Ganeti.HTools.Instance as Instance |
23 |
import qualified Ganeti.HTools.CLI as CLI |
24 |
import qualified Ganeti.HTools.Rapi as Rapi |
25 |
import qualified Ganeti.HTools.Loader as Loader |
26 |
import Ganeti.HTools.Types |
27 |
|
28 |
-- | Command line options structure. |
29 |
data Options = Options |
30 |
{ optShowNodes :: Bool -- ^ Whether to show node status |
31 |
, optOutPath :: FilePath -- ^ Path to the output directory |
32 |
, optVerbose :: Int -- ^ Verbosity level |
33 |
, optNoHeader :: Bool -- ^ Do not show a header line |
34 |
, optShowVer :: Bool -- ^ Just show the program version |
35 |
, optShowHelp :: Bool -- ^ Just show the help |
36 |
} deriving Show |
37 |
|
38 |
instance CLI.CLIOptions Options where |
39 |
showVersion = optShowVer |
40 |
showHelp = optShowHelp |
41 |
|
42 |
-- | Default values for the command line options. |
43 |
defaultOptions :: Options |
44 |
defaultOptions = Options |
45 |
{ optShowNodes = False |
46 |
, optOutPath = "." |
47 |
, optVerbose = 0 |
48 |
, optNoHeader = False |
49 |
, optShowVer = False |
50 |
, optShowHelp = False |
51 |
} |
52 |
|
53 |
-- | Options list and functions |
54 |
options :: [OptDescr (Options -> Options)] |
55 |
options = |
56 |
[ Option ['p'] ["print-nodes"] |
57 |
(NoArg (\ opts -> opts { optShowNodes = True })) |
58 |
"print the final node list" |
59 |
, Option ['d'] ["output-dir"] |
60 |
(ReqArg (\ d opts -> opts { optOutPath = d }) "PATH") |
61 |
"directory in which to write output files" |
62 |
, Option ['v'] ["verbose"] |
63 |
(NoArg (\ opts -> opts { optVerbose = (optVerbose opts) + 1 })) |
64 |
"increase the verbosity level" |
65 |
, Option [] ["no-headers"] |
66 |
(NoArg (\ opts -> opts { optNoHeader = True })) |
67 |
"do not show a header line" |
68 |
, Option ['V'] ["version"] |
69 |
(NoArg (\ opts -> opts { optShowVer = True})) |
70 |
"show the version of the program" |
71 |
, Option ['h'] ["help"] |
72 |
(NoArg (\ opts -> opts { optShowHelp = True})) |
73 |
"show help" |
74 |
] |
75 |
|
76 |
-- | Generate node file data from node objects |
77 |
serializeNodes :: Cluster.NodeList -> String -> String |
78 |
serializeNodes nl csf = |
79 |
let nodes = Container.elems nl |
80 |
nlines = map |
81 |
(\node -> |
82 |
let name = Node.name node ++ csf |
83 |
t_mem = (truncate $ Node.t_mem node)::Int |
84 |
t_dsk = (truncate $ Node.t_dsk node)::Int |
85 |
in |
86 |
printf "%s|%d|%d|%d|%d|%d|%c" name |
87 |
t_mem (Node.n_mem node) (Node.f_mem node) |
88 |
t_dsk (Node.f_dsk node) |
89 |
(if Node.offline node then 'Y' else 'N') |
90 |
) |
91 |
nodes |
92 |
in unlines nlines |
93 |
|
94 |
-- | Generate instance file data from instance objects |
95 |
serializeInstances :: Cluster.NodeList -> Cluster.InstanceList |
96 |
-> String -> String |
97 |
serializeInstances nl il csf = |
98 |
let instances = Container.elems il |
99 |
nlines = map |
100 |
(\inst -> |
101 |
let |
102 |
iname = Instance.name inst ++ csf |
103 |
pnode = cNameOf nl $ Instance.pnode inst |
104 |
snode = cNameOf nl $ Instance.snode inst |
105 |
in |
106 |
printf "%s|%d|%d|%s|%s|%s" |
107 |
iname (Instance.mem inst) (Instance.dsk inst) |
108 |
(Instance.run_st inst) |
109 |
pnode snode |
110 |
) |
111 |
instances |
112 |
in unlines nlines |
113 |
|
114 |
-- | Return a one-line summary of cluster state |
115 |
printCluster :: Cluster.NodeList -> Cluster.InstanceList |
116 |
-> String |
117 |
printCluster nl il = |
118 |
let (bad_nodes, bad_instances) = Cluster.computeBadItems nl il |
119 |
ccv = Cluster.compCV nl |
120 |
nodes = Container.elems nl |
121 |
insts = Container.elems il |
122 |
t_ram = truncate . sum . map Node.t_mem $ nodes |
123 |
t_dsk = truncate . sum . map Node.t_dsk $ nodes |
124 |
f_ram = sum . map Node.f_mem $ nodes |
125 |
f_dsk = sum . map Node.f_dsk $ nodes |
126 |
in |
127 |
printf "%5d %5d %5d %5d %6d %6d %6d %6d %.8f" |
128 |
(length nodes) (length insts) |
129 |
(length bad_nodes) (length bad_instances) |
130 |
(t_ram::Integer) f_ram |
131 |
((t_dsk::Integer) `div` 1024) (f_dsk `div` 1024) |
132 |
ccv |
133 |
|
134 |
|
135 |
-- | Replace slashes with underscore for saving to filesystem |
136 |
|
137 |
fixSlash :: String -> String |
138 |
fixSlash = map (\x -> if x == '/' then '_' else x) |
139 |
|
140 |
-- | Main function. |
141 |
main :: IO () |
142 |
main = do |
143 |
cmd_args <- System.getArgs |
144 |
(opts, clusters) <- CLI.parseOpts cmd_args "hscan" options |
145 |
defaultOptions |
146 |
|
147 |
let odir = optOutPath opts |
148 |
nlen = maximum . map length $ clusters |
149 |
|
150 |
unless (optNoHeader opts) $ |
151 |
printf "%-*s %5s %5s %5s %5s %6s %6s %6s %6s %10s\n" nlen |
152 |
"Name" "Nodes" "Inst" "BNode" "BInst" "t_mem" "f_mem" |
153 |
"t_disk" "f_disk" "Score" |
154 |
|
155 |
mapM_ (\ name -> |
156 |
do |
157 |
printf "%-*s " nlen name |
158 |
hFlush stdout |
159 |
input_data <- Rapi.loadData name |
160 |
let ldresult = input_data >>= Loader.mergeData |
161 |
(case ldresult of |
162 |
Bad err -> printf "\nError: failed to load data. \ |
163 |
\Details:\n%s\n" err |
164 |
Ok x -> do |
165 |
let (nl, il, csf, _, _) = x |
166 |
(_, fix_nl) = Loader.checkData nl il |
167 |
putStrLn $ printCluster fix_nl il |
168 |
when (optShowNodes opts) $ do |
169 |
putStr $ Cluster.printNodes fix_nl |
170 |
let ndata = serializeNodes nl csf |
171 |
idata = serializeInstances nl il csf |
172 |
oname = odir </> (fixSlash name) |
173 |
writeFile (oname <.> "nodes") ndata |
174 |
writeFile (oname <.> "instances") idata) |
175 |
) clusters |