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1 | 585d4420 | Iustin Pop | {-| Solver for N+1 cluster errors |
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2 | 585d4420 | Iustin Pop | |
3 | 585d4420 | Iustin Pop | -} |
4 | 585d4420 | Iustin Pop | |
5 | 585d4420 | Iustin Pop | module Main (main) where |
6 | 585d4420 | Iustin Pop | |
7 | 585d4420 | Iustin Pop | import Data.List |
8 | 585d4420 | Iustin Pop | import Data.Function |
9 | 842e3764 | Iustin Pop | import Data.Maybe (isJust, fromJust) |
10 | 585d4420 | Iustin Pop | import Monad |
11 | 585d4420 | Iustin Pop | import System |
12 | 585d4420 | Iustin Pop | import System.IO |
13 | 585d4420 | Iustin Pop | import System.Console.GetOpt |
14 | 585d4420 | Iustin Pop | import qualified System |
15 | 585d4420 | Iustin Pop | |
16 | 585d4420 | Iustin Pop | import Text.Printf (printf) |
17 | 585d4420 | Iustin Pop | |
18 | 585d4420 | Iustin Pop | import qualified Ganeti.HTools.Container as Container |
19 | 585d4420 | Iustin Pop | import qualified Ganeti.HTools.Cluster as Cluster |
20 | 585d4420 | Iustin Pop | import qualified Ganeti.HTools.Node as Node |
21 | ed41c179 | Iustin Pop | import qualified Ganeti.HTools.Instance as Instance |
22 | 585d4420 | Iustin Pop | import qualified Ganeti.HTools.CLI as CLI |
23 | 585d4420 | Iustin Pop | import Ganeti.HTools.IAlloc |
24 | e4c5beaf | Iustin Pop | import Ganeti.HTools.Types |
25 | 19f38ee8 | Iustin Pop | import Ganeti.HTools.Loader (RqType(..), Request(..)) |
26 | 585d4420 | Iustin Pop | |
27 | 585d4420 | Iustin Pop | -- | Command line options structure. |
28 | 585d4420 | Iustin Pop | data Options = Options |
29 | 842e3764 | Iustin Pop | { optShowVer :: Bool -- ^ Just show the program version |
30 | 585d4420 | Iustin Pop | , optShowHelp :: Bool -- ^ Just show the help |
31 | 585d4420 | Iustin Pop | } deriving Show |
32 | 585d4420 | Iustin Pop | |
33 | 585d4420 | Iustin Pop | -- | Default values for the command line options. |
34 | 585d4420 | Iustin Pop | defaultOptions :: Options |
35 | 585d4420 | Iustin Pop | defaultOptions = Options |
36 | 842e3764 | Iustin Pop | { optShowVer = False |
37 | 585d4420 | Iustin Pop | , optShowHelp = False |
38 | 585d4420 | Iustin Pop | } |
39 | 585d4420 | Iustin Pop | |
40 | 842e3764 | Iustin Pop | instance CLI.CLIOptions Options where |
41 | 842e3764 | Iustin Pop | showVersion = optShowVer |
42 | 842e3764 | Iustin Pop | showHelp = optShowHelp |
43 | 842e3764 | Iustin Pop | |
44 | 585d4420 | Iustin Pop | -- | Options list and functions |
45 | 585d4420 | Iustin Pop | options :: [OptDescr (Options -> Options)] |
46 | 585d4420 | Iustin Pop | options = |
47 | 842e3764 | Iustin Pop | [ Option ['V'] ["version"] |
48 | 585d4420 | Iustin Pop | (NoArg (\ opts -> opts { optShowVer = True})) |
49 | 585d4420 | Iustin Pop | "show the version of the program" |
50 | 585d4420 | Iustin Pop | , Option ['h'] ["help"] |
51 | 585d4420 | Iustin Pop | (NoArg (\ opts -> opts { optShowHelp = True})) |
52 | 585d4420 | Iustin Pop | "show help" |
53 | 585d4420 | Iustin Pop | ] |
54 | 585d4420 | Iustin Pop | |
55 | f826c5e0 | Iustin Pop | |
56 | 262a08a2 | Iustin Pop | filterFails :: (Monad m) => [(Maybe Node.List, [Node.Node])] |
57 | 262a08a2 | Iustin Pop | -> m [(Node.List, [Node.Node])] |
58 | f826c5e0 | Iustin Pop | filterFails sols = |
59 | f826c5e0 | Iustin Pop | if null sols then fail "No nodes onto which to allocate at all" |
60 | f826c5e0 | Iustin Pop | else let sols' = filter (isJust . fst) sols |
61 | f826c5e0 | Iustin Pop | in if null sols' then |
62 | f826c5e0 | Iustin Pop | fail "No valid allocation solutions" |
63 | 58709f92 | Iustin Pop | else |
64 | f826c5e0 | Iustin Pop | return $ map (\(x, y) -> (fromJust x, y)) sols' |
65 | f826c5e0 | Iustin Pop | |
66 | 262a08a2 | Iustin Pop | processResults :: (Monad m) => [(Node.List, [Node.Node])] |
67 | f826c5e0 | Iustin Pop | -> m (String, [Node.Node]) |
68 | f826c5e0 | Iustin Pop | processResults sols = |
69 | f826c5e0 | Iustin Pop | let sols' = map (\(nl', ns) -> (Cluster.compCV nl', ns)) sols |
70 | f826c5e0 | Iustin Pop | sols'' = sortBy (compare `on` fst) sols' |
71 | f826c5e0 | Iustin Pop | (best, w) = head sols'' |
72 | f826c5e0 | Iustin Pop | (worst, l) = last sols'' |
73 | 5e15f460 | Iustin Pop | info = printf "Valid results: %d, best score: %.8f for node(s) %s, \ |
74 | 5e15f460 | Iustin Pop | \worst score: %.8f for node(s) %s" (length sols'') |
75 | f826c5e0 | Iustin Pop | best (intercalate "/" . map Node.name $ w) |
76 | f826c5e0 | Iustin Pop | worst (intercalate "/" . map Node.name $ l) |
77 | f826c5e0 | Iustin Pop | in return (info, w) |
78 | 585d4420 | Iustin Pop | |
79 | 585d4420 | Iustin Pop | -- | Main function. |
80 | 585d4420 | Iustin Pop | main :: IO () |
81 | 585d4420 | Iustin Pop | main = do |
82 | 585d4420 | Iustin Pop | cmd_args <- System.getArgs |
83 | 842e3764 | Iustin Pop | (_, args) <- CLI.parseOpts cmd_args "hail" options defaultOptions |
84 | 585d4420 | Iustin Pop | |
85 | 585d4420 | Iustin Pop | when (null args) $ do |
86 | 585d4420 | Iustin Pop | hPutStrLn stderr "Error: this program needs an input file." |
87 | 585d4420 | Iustin Pop | exitWith $ ExitFailure 1 |
88 | 585d4420 | Iustin Pop | |
89 | 585d4420 | Iustin Pop | let input_file = head args |
90 | 585d4420 | Iustin Pop | input_data <- readFile input_file |
91 | 585d4420 | Iustin Pop | |
92 | 585d4420 | Iustin Pop | request <- case (parseData input_data) of |
93 | 585d4420 | Iustin Pop | Bad err -> do |
94 | 585d4420 | Iustin Pop | putStrLn $ "Error: " ++ err |
95 | 585d4420 | Iustin Pop | exitWith $ ExitFailure 1 |
96 | 585d4420 | Iustin Pop | Ok rq -> return rq |
97 | 585d4420 | Iustin Pop | |
98 | ed41c179 | Iustin Pop | let Request rqtype nl il csf = request |
99 | ed41c179 | Iustin Pop | new_nodes = case rqtype of |
100 | dbba5246 | Iustin Pop | Allocate xi reqn -> Cluster.tryAlloc nl il xi reqn |
101 | ed41c179 | Iustin Pop | Relocate idx reqn exnodes -> |
102 | dbba5246 | Iustin Pop | Cluster.tryReloc nl il idx reqn exnodes |
103 | f826c5e0 | Iustin Pop | let sols = new_nodes >>= filterFails >>= processResults |
104 | f826c5e0 | Iustin Pop | let (ok, info, rn) = case sols of |
105 | 58709f92 | Iustin Pop | Ok (info, sn) -> (True, "Request successful: " ++ info, |
106 | 262a08a2 | Iustin Pop | map ((++ csf) . Node.name) sn) |
107 | ed41c179 | Iustin Pop | Bad s -> (False, "Request failed: " ++ s, []) |
108 | ed41c179 | Iustin Pop | resp = formatResponse ok info rn |
109 | ed41c179 | Iustin Pop | putStrLn resp |