import qualified Ganeti.HTools.Node as Node
import qualified Ganeti.HTools.Instance as Instance
--- | Read an URL via curl and return the body if successful
+-- | 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,
_ -> fail $ printf "Curl error for '%s', error %s"
url (show code))
--- | Append the default port if not passed in
+-- | Append the default port if not passed in.
formatHost :: String -> String
formatHost master =
if elem ':' master then master
else "https://" ++ master ++ ":5080"
+-- | Parse a instance list in JSON format.
getInstances :: NameAssoc
-> String
-> Result [(String, Instance.Instance)]
ilist <- mapM (parseInstance ktn) arr
return ilist
+-- | Parse a node list in JSON format.
getNodes :: String -> Result [(String, Node.Node)]
getNodes body = do
arr <- loadJSArray body
nlist <- mapM parseNode arr
return nlist
-parseInstance :: [(String, Int)]
+-- | Construct an instance from a JSON object.
+parseInstance :: [(String, Ndx)]
-> JSObject JSValue
-> Result (String, Instance.Instance)
parseInstance ktn a = do
snode <- (if null snodes then return Node.noSecondary
else readEitherString (head snodes) >>= lookupNode ktn name)
running <- fromObj "status" a
- let inst = Instance.create mem disk running pnode snode
+ let inst = Instance.create name mem disk running pnode snode
return (name, inst)
+-- | Construct a node from a JSON object.
parseNode :: JSObject JSValue -> Result (String, Node.Node)
parseNode a = do
name <- fromObj "name" a
offline <- fromObj "offline" a
node <- (case offline of
- True -> return $ Node.create 0 0 0 0 0 True
+ True -> return $ Node.create name 0 0 0 0 0 True
_ -> do
drained <- fromObj "drained" a
mtotal <- fromObj "mtotal" a
mfree <- fromObj "mfree" a
dtotal <- fromObj "dtotal" a
dfree <- fromObj "dfree" a
- return $ Node.create mtotal mnode mfree
+ return $ Node.create name mtotal mnode mfree
dtotal dfree (offline || drained))
return (name, node)
-loadData :: String -- ^ Cluster/URL to use as source
- -> IO (Result (NameAssoc, Node.AssocList,
- NameAssoc, Instance.AssocList))
+-- | Builds the cluster data from an URL.
+loadData :: String -- ^ Cluster or URL to use as source
+ -> IO (Result (Node.AssocList, Instance.AssocList))
loadData master = do -- IO monad
let url = formatHost master
node_body <- getUrl $ printf "%s/2/nodes?bulk=1" url
inst_body <- getUrl $ printf "%s/2/instances?bulk=1" url
return $ do -- Result monad
node_data <- node_body >>= getNodes
- let (node_names, node_idx) = assignIndices Node.setIdx node_data
+ let (node_names, node_idx) = assignIndices node_data
inst_data <- inst_body >>= getInstances node_names
- let (inst_names, inst_idx) = assignIndices Instance.setIdx inst_data
- return (node_names, node_idx, inst_names, inst_idx)
+ let (_, inst_idx) = assignIndices inst_data
+ return (node_idx, inst_idx)