{-
-Copyright (C) 2009 Google Inc.
+Copyright (C) 2009, 2010 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
module Ganeti.HTools.Rapi
(
loadData
+ , parseData
) where
import Network.Curl
mapM (parseNode . fromJSObject)
-- | Construct an instance from a JSON object.
-parseInstance :: [(String, Ndx)]
+parseInstance :: NameAssoc
-> [(String, JSValue)]
-> Result (String, Instance.Instance)
parseInstance ktn a = do
let extract s = tryFromObj ("Node '" ++ name ++ "'") a s
offline <- extract "offline"
drained <- extract "drained"
+ guuid <- extract "group.uuid"
node <- (if offline || drained
- then return $ Node.create name 0 0 0 0 0 0 True
+ then return $ Node.create name 0 0 0 0 0 0 True guuid
else do
mtotal <- extract "mtotal"
mnode <- extract "mnode"
dfree <- extract "dfree"
ctotal <- extract "ctotal"
return $ Node.create name mtotal mnode mfree
- dtotal dfree ctotal False)
+ dtotal dfree ctotal False guuid)
return (name, node)
--- | Builds the cluster data from an URL.
-loadData :: String -- ^ Cluster or URL to use as source
- -> IO (Result (Node.AssocList, Instance.AssocList, [String]))
-loadData master = do -- IO monad
+-- | Loads the raw cluster data from an URL.
+readData :: String -- ^ Cluster or URL to use as source
+ -> IO (Result String, Result String, Result String)
+readData master = do
let url = formatHost master
node_body <- getUrl $ printf "%s/2/nodes?bulk=1" url
inst_body <- getUrl $ printf "%s/2/instances?bulk=1" url
tags_body <- getUrl $ printf "%s/2/tags" url
- return $ do -- Result monad
- node_data <- node_body >>= getNodes
- let (node_names, node_idx) = assignIndices node_data
- inst_data <- inst_body >>= getInstances node_names
- let (_, inst_idx) = assignIndices inst_data
- tags_data <- tags_body >>= (fromJResult "Parsing tags data" . decodeStrict)
- return (node_idx, inst_idx, tags_data)
+ return (node_body, inst_body, tags_body)
+
+-- | Builds the cluster data from the raw Rapi content
+parseData :: (Result String, Result String, Result String)
+ -> Result (Node.List, Instance.List, [String])
+parseData (node_body, inst_body, tags_body) = do
+ node_data <- node_body >>= getNodes
+ let (node_names, node_idx) = assignIndices node_data
+ inst_data <- inst_body >>= getInstances node_names
+ let (_, inst_idx) = assignIndices inst_data
+ tags_data <- tags_body >>= (fromJResult "Parsing tags data" . decodeStrict)
+ return (node_idx, inst_idx, tags_data)
+
+-- | Top level function for data loading
+loadData :: String -- ^ Cluster or URL to use as source
+ -> IO (Result (Node.List, Instance.List, [String]))
+loadData master = readData master >>= return . parseData