import Network.Curl.Code
import Data.Either ()
import Data.Maybe
+import Data.List
import Control.Monad
import Text.JSON (JSObject, JSValue)
import Text.Printf (printf)
import Ganeti.HTools.Utils
-
--- Some constants
-
--- | The fixed drbd overhead per disk (only used with 1.2's sdx_size)
-drbdOverhead = 128
-
-getUrl :: String -> IO (Result String)
+-- | Read an URL via curl and return the body if successful
+getUrl :: (Monad m) => String -> IO (m String)
getUrl url = do
(code, body) <- curlGetString url [CurlSSLVerifyPeer False,
CurlSSLVerifyHost 0]
return (case code of
- CurlOK -> Ok body
- _ -> Bad $ printf "Curl error for '%s', error %s"
+ CurlOK -> return body
+ _ -> fail $ printf "Curl error for '%s', error %s"
url (show code))
+-- | Append the default port if not passed in
+formatHost :: String -> String
+formatHost master =
+ if elem ':' master then master
+ else "https://" ++ master ++ ":5080"
+
getInstances :: String -> IO (Result String)
getInstances master = do
- let url2 = printf "https://%s:5080/2/instances?bulk=1" master
+ let url2 = printf "%s/2/instances?bulk=1" (formatHost master)
body <- getUrl url2
- return $ (body >>= \x -> do
- arr <- loadJSArray x
- ilist <- mapM parseInstance arr
- return $ unlines ilist)
+ return $ (do x <- body
+ arr <- loadJSArray x
+ ilist <- mapM parseInstance arr
+ return $ unlines ilist)
getNodes :: String -> IO (Result String)
getNodes master = do
- let url2 = printf "https://%s:5080/2/nodes?bulk=1" master
+ let url2 = printf "%s/2/nodes?bulk=1" (formatHost master)
body <- getUrl url2
- return $ (body >>= \x -> do
- arr <- loadJSArray x
- nlist <- mapM parseNode arr
- return $ unlines nlist)
+ return $ (do x <- body
+ arr <- loadJSArray x
+ nlist <- mapM parseNode arr
+ return $ unlines nlist)
parseInstance :: JSObject JSValue -> Result String
parseInstance a =
let name = getStringElement "name" a
- disk = case getIntElement "disk_usage" a of
- Bad _ -> let log_sz = liftM2 (+)
- (getIntElement "sda_size" a)
- (getIntElement "sdb_size" a)
- in liftM2 (+) log_sz (Ok $ drbdOverhead * 2)
- x@(Ok _) -> x
- bep = fromObj "beparams" a
+ disk = getIntElement "disk_usage" a
+ mem = getObjectElement "beparams" a >>= getIntElement "memory"
pnode = getStringElement "pnode" a
- snode = (liftM head $ getListElement "snodes" a)
- >>= readEitherString
- mem = case bep of
- Bad _ -> getIntElement "admin_ram" a
- Ok o -> getIntElement "memory" o
+ snode = (liftM head $ getListElement "snodes" a) >>= readEitherString
running = getStringElement "status" a
in
name |+ (show `liftM` mem) |+
(show `liftM` disk) |+
running |+ pnode |+ snode
-boolToYN :: Bool -> Result String
-boolToYN True = Ok "Y"
-boolToYN _ = Ok "N"
+boolToYN :: (Monad m) => Bool -> m String
+boolToYN True = return "Y"
+boolToYN _ = return "N"
parseNode :: JSObject JSValue -> Result String
parseNode a =