(
parseData
, formatResponse
+ , RqType(..)
+ , Request(..)
) where
import Data.Either ()
-import Data.Maybe
+--import Data.Maybe
import Control.Monad
-import Text.JSON
-import Text.Printf (printf)
+import Text.JSON (JSObject, JSValue(JSBool, JSString, JSArray),
+ makeObj, encodeStrict, decodeStrict,
+ fromJSObject, toJSString)
+--import Text.Printf (printf)
+import qualified Ganeti.HTools.Container as Container
+import qualified Ganeti.HTools.Node as Node
+import qualified Ganeti.HTools.Instance as Instance
+import Ganeti.HTools.Loader
import Ganeti.HTools.Utils
+import Ganeti.HTools.Types
-parseInstance :: String -> JSObject JSValue -> Either String String
-parseInstance n a =
- let name = Right n
- disk = case getIntElement "disk_usage" a of
- Left _ -> let all_d = getListElement "disks" a `combineEithers`
- asObjectList
- szd = all_d `combineEithers`
- (ensureEitherList .
- map (getIntElement "size"))
- sze = applyEither1 (map (+128)) szd
- szf = applyEither1 sum sze
- in szf
- Right x -> Right x
- nodes = getListElement "nodes" a
- pnode = eitherListHead nodes
- `combineEithers` readEitherString
- snode = applyEither1 (head . tail) nodes
- `combineEithers` readEitherString
- mem = getIntElement "memory" a
- running = Right "running" --getStringElement "status" a
- in
- concatEitherElems name $
- concatEitherElems (show `applyEither1` mem) $
- concatEitherElems (show `applyEither1` disk) $
- concatEitherElems running $
- concatEitherElems pnode snode
+data RqType
+ = Allocate Instance.Instance Int
+ | Relocate Idx Int [Ndx]
+ deriving (Show)
-parseNode :: String -> JSObject JSValue -> Either String String
-parseNode n a =
- let name = Right n
- mtotal = getIntElement "total_memory" a
- mnode = getIntElement "reserved_memory" a
- mfree = getIntElement "free_memory" a
- dtotal = getIntElement "total_disk" a
- dfree = getIntElement "free_disk" a
- in concatEitherElems name $
- concatEitherElems (show `applyEither1` mtotal) $
- concatEitherElems (show `applyEither1` mnode) $
- concatEitherElems (show `applyEither1` mfree) $
- concatEitherElems (show `applyEither1` dtotal)
- (show `applyEither1` dfree)
+data Request = Request RqType Node.List Instance.List String
+ deriving (Show)
-parseData :: String -> Either String (String, String)
-parseData body =
- let
- decoded = resultToEither $ decodeStrict body
- obj = decoded -- decoded `combineEithers` fromJSObject
- request = obj `combineEithers` getObjectElement "request"
- rname = request `combineEithers` getStringElement "name"
- ilist = obj `combineEithers` getObjectElement "instances"
- nlist = obj `combineEithers` getObjectElement "nodes"
- idata = applyEither1 fromJSObject ilist
- ndata = applyEither1 fromJSObject nlist
- iobj = idata `combineEithers` (ensureEitherList .
- map (\(x,y) ->
- asJSObject y `combineEithers`
- parseInstance x))
- ilines = iobj `combineEithers` (Right . unlines)
- nobj = ndata `combineEithers` (ensureEitherList .
- map (\(x,y) ->
- asJSObject y `combineEithers`
- parseNode x))
- nlines = nobj `combineEithers` (Right . unlines)
- in applyEither2 (,) nlines ilines
+parseBaseInstance :: String
+ -> JSObject JSValue
+ -> Result (String, Instance.Instance)
+parseBaseInstance n a = do
+ disk <- case fromObj "disk_usage" a of
+ Bad _ -> do
+ all_d <- fromObj "disks" a >>= asObjectList
+ szd <- mapM (fromObj "size") all_d
+ let sze = map (+128) szd
+ szf = (sum sze)::Int
+ return szf
+ x@(Ok _) -> x
+ mem <- fromObj "memory" a
+ let running = "running"
+ return $ (n, Instance.create n mem disk running 0 0)
+
+parseInstance :: NameAssoc
+ -> String
+ -> JSObject JSValue
+ -> Result (String, Instance.Instance)
+parseInstance ktn n a = do
+ base <- parseBaseInstance n a
+ nodes <- fromObj "nodes" a
+ pnode <- readEitherString $ head nodes
+ pidx <- lookupNode ktn n pnode
+ let snodes = tail nodes
+ sidx <- (if null snodes then return Node.noSecondary
+ else (readEitherString $ head snodes) >>= lookupNode ktn n)
+ return (n, Instance.setBoth (snd base) pidx sidx)
+
+parseNode :: String -> JSObject JSValue -> Result (String, Node.Node)
+parseNode n a = do
+ let name = n
+ offline <- fromObj "offline" a
+ drained <- fromObj "drained" a
+ node <- (case offline of
+ True -> return $ Node.create name 0 0 0 0 0 True
+ _ -> do
+ mtotal <- fromObj "total_memory" a
+ mnode <- fromObj "reserved_memory" a
+ mfree <- fromObj "free_memory" a
+ dtotal <- fromObj "total_disk" a
+ dfree <- fromObj "free_disk" a
+ return $ Node.create n mtotal mnode mfree
+ dtotal dfree (offline || drained))
+ return (name, node)
+
+parseData :: String -> Result Request
+parseData body = do
+ decoded <- fromJResult $ decodeStrict body
+ let obj = decoded
+ -- request parser
+ request <- fromObj "request" obj
+ rname <- fromObj "name" request
+ -- existing node parsing
+ nlist <- fromObj "nodes" obj
+ let ndata = fromJSObject nlist
+ nobj <- (mapM (\(x,y) -> asJSObject y >>= parseNode x)) ndata
+ let (ktn, nl) = assignIndices nobj
+ -- existing instance parsing
+ ilist <- fromObj "instances" obj
+ let idata = fromJSObject ilist
+ iobj <- (mapM (\(x,y) -> asJSObject y >>= parseInstance ktn x)) idata
+ let (kti, il) = assignIndices iobj
+ (map_n, map_i, csf) <- mergeData (nl, il)
+ req_nodes <- fromObj "required_nodes" request
+ optype <- fromObj "type" request
+ rqtype <-
+ case optype of
+ "allocate" ->
+ do
+ inew <- parseBaseInstance rname request
+ let io = snd inew
+ return $ Allocate io req_nodes
+ "relocate" ->
+ do
+ ridx <- lookupInstance kti rname
+ ex_nodes <- fromObj "relocate_from" request
+ let ex_nodes' = map (stripSuffix $ length csf) ex_nodes
+ ex_idex <- mapM (Container.findByName map_n) ex_nodes'
+ return $ Relocate ridx req_nodes ex_idex
+ other -> fail $ ("Invalid request type '" ++ other ++ "'")
+ return $ Request rqtype map_n map_i csf
formatResponse :: Bool -> String -> [String] -> String
formatResponse success info nodes =
projects / ganeti-local / blobdiff