, parseData
) where
+import Data.List (isPrefixOf)
import Data.Maybe (fromMaybe)
#ifndef NO_CURL
import Network.Curl
import Text.JSON (JSObject, fromJSObject, decodeStrict)
import Text.JSON.Types (JSValue(..))
import Text.Printf (printf)
+import System.FilePath
import Ganeti.HTools.Loader
import Ganeti.HTools.Types
{-# ANN module "HLint: ignore Eta reduce" #-}
+-- | File method prefix.
+filePrefix :: String
+filePrefix = "file://"
+
-- | Read an URL via curl and return the body if successful.
getUrl :: (Monad m) => String -> IO (m String)
url (show code))
#endif
+-- | Helper to convert I/O errors in 'Bad' values.
+ioErrToResult :: IO a -> IO (Result a)
+ioErrToResult ioaction =
+ catch (ioaction >>= return . Ok) (return . Bad . show)
+
-- | Append the default port if not passed in.
formatHost :: String -> String
formatHost master =
return (tags, ipolicy)
-- | Loads the raw cluster data from an URL.
-readData :: String -- ^ Cluster or URL to use as source
- -> IO (Result String, Result String, Result String, Result String)
-readData master = do
+readDataHttp :: String -- ^ Cluster or URL to use as source
+ -> IO (Result String, Result String, Result String, Result String)
+readDataHttp master = do
let url = formatHost master
group_body <- getUrl $ printf "%s/2/groups?bulk=1" url
node_body <- getUrl $ printf "%s/2/nodes?bulk=1" url
info_body <- getUrl $ printf "%s/2/info" url
return (group_body, node_body, inst_body, info_body)
+-- | Loads the raw cluster data from the filesystem.
+readDataFile:: String -- ^ Path to the directory containing the files
+ -> IO (Result String, Result String, Result String, Result String)
+readDataFile path = do
+ group_body <- ioErrToResult $ readFile $ path </> "groups.json"
+ node_body <- ioErrToResult $ readFile $ path </> "nodes.json"
+ inst_body <- ioErrToResult $ readFile $ path </> "instances.json"
+ info_body <- ioErrToResult $ readFile $ path </> "info.json"
+ return (group_body, node_body, inst_body, info_body)
+
+-- | Loads data via either 'readDataFile' or 'readDataHttp'.
+readData :: String -- ^ URL to use as source
+ -> IO (Result String, Result String, Result String, Result String)
+readData url = do
+ if filePrefix `isPrefixOf` url
+ then readDataFile (drop (length filePrefix) url)
+ else readDataHttp url
+
-- | Builds the cluster data from the raw Rapi content.
parseData :: (Result String, Result String, Result String, Result String)
-> Result ClusterData