-}
+{-
+
+Copyright (C) 2009 Google Inc.
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301, USA.
+
+-}
+
module Ganeti.HTools.Rapi
(
loadData
import Ganeti.HTools.Utils
import Ganeti.HTools.Loader
+import Ganeti.HTools.Types
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)]
-getInstances ktn body = do
- arr <- loadJSArray body
- ilist <- mapM (parseInstance ktn) arr
- return ilist
+getInstances ktn body = loadJSArray body >>= mapM (parseInstance ktn)
+-- | 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
+getNodes body = loadJSArray body >>= mapM parseNode
-parseInstance :: [(String, Int)]
+-- | Construct an instance from a JSON object.
+parseInstance :: [(String, Ndx)]
-> JSObject JSValue
-> Result (String, Instance.Instance)
parseInstance ktn a = do
name <- fromObj "name" a
disk <- fromObj "disk_usage" a
mem <- fromObj "beparams" a >>= fromObj "memory"
+ vcpus <- fromObj "beparams" a >>= fromObj "vcpus"
pnode <- fromObj "pnode" a >>= lookupNode ktn name
- snodes <- getListElement "snodes" a
+ snodes <- fromObj "snodes" a
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 vcpus 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
- _ -> do
- drained <- fromObj "drained" a
- mtotal <- fromObj "mtotal" a
- mnode <- fromObj "mnode" a
- mfree <- fromObj "mfree" a
- dtotal <- fromObj "dtotal" a
- dfree <- fromObj "dfree" a
- return $ Node.create mtotal mnode mfree
- dtotal dfree (offline || drained))
+ node <- (if offline
+ then return $ Node.create name 0 0 0 0 0 0 True
+ else do
+ drained <- fromObj "drained" a
+ mtotal <- fromObj "mtotal" a
+ mnode <- fromObj "mnode" a
+ mfree <- fromObj "mfree" a
+ dtotal <- fromObj "dtotal" a
+ dfree <- fromObj "dfree" a
+ ctotal <- fromObj "ctotal" a
+ return $ Node.create name mtotal mnode mfree
+ dtotal dfree ctotal (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)
projects / ganeti-local / blobdiff