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-rw-r--r--Monitors/Cpu.hs109
-rw-r--r--Monitors/Mem.hs99
-rw-r--r--Monitors/Net.hs142
3 files changed, 350 insertions, 0 deletions
diff --git a/Monitors/Cpu.hs b/Monitors/Cpu.hs
new file mode 100644
index 0000000..b67f772
--- /dev/null
+++ b/Monitors/Cpu.hs
@@ -0,0 +1,109 @@
+-----------------------------------------------------------------------------
+-- |
+-- Module : Monitors.Cpu
+-- Copyright : (c) Andrea Rossato
+-- License : BSD-style (see LICENSE)
+--
+-- Maintainer : Andrea Rossato <andrea.rossato@unibz.it>
+-- Stability : unstable
+-- Portability : unportable
+--
+-- A cpu monitor for XMobar
+--
+-----------------------------------------------------------------------------
+
+module Main where
+
+import Numeric
+import Control.Concurrent
+import Text.ParserCombinators.Parsec
+
+
+data Config =
+ Config { intervall :: Int
+ , cpuNormal :: Integer
+ , cpuNormalColor :: String
+ , cpuCritical :: Integer
+ , cpuCriticalColor :: String
+ }
+
+defaultConfig :: Config
+defaultConfig =
+ Config { intervall = 500000
+ , cpuNormal = 2
+ , cpuNormalColor = "#00FF00"
+ , cpuCritical = 60
+ , cpuCriticalColor = "#FF0000"
+ }
+
+config :: Config
+config = defaultConfig
+
+-- Utilities
+
+interSec :: IO ()
+interSec = threadDelay (intervall config)
+
+takeDigits :: Int -> Float -> Float
+takeDigits d n =
+ read $ showFFloat (Just d) n ""
+
+floatToPercent :: Float -> String
+floatToPercent n =
+ showFFloat (Just 2) (n*100) "%"
+
+
+run :: Parser [a] -> IO String -> IO [a]
+run p input
+ = do a <- input
+ case (parse p "" a) of
+ Left _ -> return []
+ Right x -> return x
+
+fileCPU :: IO String
+fileCPU = readFile "/proc/stat"
+
+
+getNumbers :: Parser Float
+getNumbers = skipMany space >> many1 digit >>= \n -> return $ read n
+
+parserCPU :: Parser [Float]
+parserCPU = string "cpu" >> count 4 getNumbers
+
+parseCPU :: IO [Float]
+parseCPU =
+ do a <- run parserCPU fileCPU
+ interSec
+ b <- run parserCPU fileCPU
+ let dif = zipWith (-) b a
+ tot = foldr (+) 0 dif
+ percent = map (/ tot) dif
+ return percent
+
+formatCpu :: [Float] -> String
+formatCpu [] = ""
+formatCpu (us:ni:sy:_)
+ | x >= c = setColor z cpuCriticalColor
+ | x >= n = setColor z cpuNormalColor
+ | otherwise = floatToPercent y
+ where x = (us * 100) + (sy * 100) + (ni * 100)
+ y = us + sy + ni
+ z = floatToPercent y
+ c = fromInteger (cpuCritical config)
+ n = fromInteger (cpuNormal config)
+formatCpu _ = ""
+
+setColor :: String -> (Config -> String) -> String
+setColor str ty =
+ "<fc=" ++ ty config ++ ">" ++
+ str ++ "</fc>"
+
+cpu :: IO String
+cpu =
+ do l <- parseCPU
+ return $ "Cpu: " ++ formatCpu l
+
+main :: IO ()
+main =
+ do c <- cpu
+ putStrLn c
diff --git a/Monitors/Mem.hs b/Monitors/Mem.hs
new file mode 100644
index 0000000..d8bd601
--- /dev/null
+++ b/Monitors/Mem.hs
@@ -0,0 +1,99 @@
+-----------------------------------------------------------------------------
+-- |
+-- Module : Monitors.Mem
+-- Copyright : (c) Andrea Rossato
+-- License : BSD-style (see LICENSE)
+--
+-- Maintainer : Andrea Rossato <andrea.rossato@unibz.it>
+-- Stability : unstable
+-- Portability : unportable
+--
+-- A memory monitor for XMobar
+--
+-----------------------------------------------------------------------------
+
+module Main where
+
+import Numeric
+
+data Config =
+ Config { memNormal :: Integer
+ , memNormalColor :: String
+ , memCritical :: Integer
+ , memCriticalColor :: String
+ , swapNormal :: Integer
+ , swapNormalColor :: String
+ , swapCritical :: Integer
+ , swapCriticalColor :: String
+ }
+
+defaultConfig :: Config
+defaultConfig =
+ Config { memNormal = 80
+ , memNormalColor = "#00FF00"
+ , memCritical = 90
+ , memCriticalColor = "#FF0000"
+ , swapNormal = 15
+ , swapNormalColor = "#00FF00"
+ , swapCritical = 50
+ , swapCriticalColor = "#FF0000"
+ }
+config :: Config
+config = defaultConfig
+
+-- Utilities
+
+takeDigits :: Int -> Float -> Float
+takeDigits d n =
+ read $ showFFloat (Just d) n ""
+
+floatToPercent :: Float -> String
+floatToPercent n =
+ showFFloat (Just 2) (n*100) "%"
+
+fileMEM :: IO String
+fileMEM = readFile "/proc/meminfo"
+
+parseMEM :: IO [Float]
+parseMEM =
+ do file <- fileMEM
+ let content = map words $ take 13 $ lines file
+ [total, free, buffer, cache,_,_,_,_,_,_,_,swapTotal,swapFree] = map (\line -> (read $ line !! 1 :: Float) / 1024) content
+ rest = free + buffer + cache
+ used = total - rest
+ usedratio = used * 100 / total
+ swapRatio = 100 - (swapFree / swapTotal * 100)
+ return [total, free, buffer, cache, rest, used, usedratio, swapFree, swapRatio]
+
+
+formatMem :: [Float] -> String
+formatMem [] = ""
+formatMem (total:_:buffer:cach:_:used:_:_:swapRatio:_) =
+ "Ram: " ++ ram ++ " cached: " ++ cache ++ " Swap: " ++ swap
+ where (memN,memC,swapN,swapC) = (fromIntegral $ memNormal config,fromIntegral $ memCritical config
+ , fromIntegral $ swapNormal config, fromIntegral $ swapCritical config)
+ m = floatToPercent ((used + buffer + cach) / total)
+ sw = show (takeDigits 2 swapRatio) ++ "%"
+ cache = show (takeDigits 2 cach) ++ "Mb"
+ ram | (used / total * 100) >= memC = setColor m memCriticalColor
+ | (used / total * 100) >= memN = setColor m memNormalColor
+ | otherwise = floatToPercent (used / total)
+ swap | swapRatio >= swapC = setColor sw swapCriticalColor
+ | swapRatio >= swapN = setColor sw swapNormalColor
+ | otherwise = sw
+formatMem _ = ""
+
+setColor :: String -> (Config -> String) -> String
+setColor str ty =
+ "<fc=" ++ ty config ++ ">" ++
+ str ++ "</fc>"
+
+mem :: IO String
+mem =
+ do m <- parseMEM
+ return $ formatMem m
+
+main :: IO ()
+main =
+ do m <- mem
+ putStrLn m \ No newline at end of file
diff --git a/Monitors/Net.hs b/Monitors/Net.hs
new file mode 100644
index 0000000..7554c56
--- /dev/null
+++ b/Monitors/Net.hs
@@ -0,0 +1,142 @@
+-----------------------------------------------------------------------------
+-- |
+-- Module : Monitors.Cpu
+-- Copyright : (c) Andrea Rossato
+-- License : BSD-style (see LICENSE)
+--
+-- Maintainer : Andrea Rossato <andrea.rossato@unibz.it>
+-- Stability : unstable
+-- Portability : unportable
+--
+-- A net device monitor for XMobar
+--
+-----------------------------------------------------------------------------
+
+module Main where
+
+import Numeric
+import Control.Concurrent
+import Text.ParserCombinators.Parsec
+import System.Environment
+
+data Config =
+ Config { intervall :: Int
+ , netDevice :: String
+ , netNormal :: Integer
+ , netNormalColor :: String
+ , netCritical :: Integer
+ , netCriticalColor :: String
+ }
+
+defaultConfig :: Config
+defaultConfig =
+ Config { intervall = 500000
+ , netDevice = "eth1"
+ , netNormal = 0
+ , netNormalColor = "#00FF00"
+ , netCritical = 50
+ , netCriticalColor = "#FF0000"
+ }
+
+config :: Config
+config = defaultConfig
+
+-- Utilities
+
+interSec :: IO ()
+interSec = threadDelay (intervall config)
+
+takeDigits :: Int -> Float -> Float
+takeDigits d n =
+ read $ showFFloat (Just d) n ""
+
+floatToPercent :: Float -> String
+floatToPercent n =
+ showFFloat (Just 2) (n*100) "%"
+
+
+run :: Parser [a] -> IO String -> IO [a]
+run p input
+ = do a <- input
+ case (parse p "" a) of
+ Left _ -> return []
+ Right x -> return x
+
+fileNET :: IO String
+fileNET =
+ do f <- readFile "/proc/net/dev"
+ return $ unlines $ drop 2 $ lines f
+
+-- CPU
+
+getNumbers :: Parser Float
+getNumbers = skipMany space >> many1 digit >>= \n -> return $ read n
+
+-- Net Devices
+
+data NetDev = NA
+ | ND { netDev :: String
+ , netRx :: Float
+ , netTx :: Float
+ } deriving (Eq,Read)
+
+instance Show NetDev where
+ show NA = "N/A"
+ show (ND nd rx tx) =
+ nd ++ ": " ++ (formatNet rx) ++ "|" ++ formatNet tx
+
+formatNet :: Float -> String
+formatNet d | d > fromInteger (netCritical config) = setColor str netCriticalColor
+ | d > fromInteger (netNormal config) = setColor str netNormalColor
+ | otherwise = str
+ where str = show d ++ "Kb"
+
+pNetDev :: Parser NetDev
+pNetDev =
+ do { skipMany1 space
+ ; dn <- manyTill alphaNum $ char ':'
+ ; [rx] <- count 1 getNumbers
+ ; _ <- count 7 getNumbers
+ ; [tx] <- count 1 getNumbers
+ ; _ <- count 7 getNumbers
+ ; char '\n'
+ ; return $ ND dn (rx / 1024) (tx / 1024)
+ }
+
+parserNet :: Parser [NetDev]
+parserNet = manyTill pNetDev eof
+
+parseNET :: String -> IO [NetDev]
+parseNET nd =
+ do a <- run parserNet fileNET
+ interSec
+ b <- run parserNet fileNET
+ let netRate f da db = takeDigits 2 $ ((f db) - (f da)) * fromIntegral (1000000 `div` (intervall config))
+ diffRate (da,db) = ND (netDev da)
+ (netRate netRx da db)
+ (netRate netTx da db)
+ return $ filter (\d -> netDev d == nd) $ map diffRate $ zip a b
+
+-- Formattings
+
+setColor :: String -> (Config -> String) -> String
+setColor str ty =
+ "<fc=" ++ ty config ++ ">" ++
+ str ++ "</fc>"
+
+net :: String -> IO String
+net nd =
+ do pn <- parseNET nd
+ n <- case pn of
+ [x] -> return x
+ _ -> return $ NA
+ return $ show n
+
+main :: IO ()
+main =
+ do args <- getArgs
+ n <-
+ if length args /= 1
+ then error "No device specified.\nUsage: net dev"
+ else net (args!!0)
+ putStrLn n
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