fluent-logger (empty) → 0.1.0.0
raw patch · 8 files changed
+649/−0 lines, 8 filesdep +attoparsecdep +basedep +bytestringsetup-changed
Dependencies added: attoparsec, base, bytestring, conduit, criterion, fluent-logger, hspec, msgpack, network, network-conduit, network-socket-options, old-locale, stm, time, transformers
Files
- LICENSE +202/−0
- Network/Fluent/Logger.hs +192/−0
- Setup.hs +2/−0
- benchmark/benchmark.hs +14/−0
- fluent-logger.cabal +56/−0
- test/MockServer.hs +68/−0
- test/Network/Fluent/LoggerSpec.hs +114/−0
- test/Spec.hs +1/−0
+ LICENSE view
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+ Network/Fluent/Logger.hs view
@@ -0,0 +1,192 @@+--+-- Copyright (C) 2012 Noriyuki OHKAWA+--+-- Licensed under the Apache License, Version 2.0 (the "License");+-- you may not use this file except in compliance with the License.+-- You may obtain a copy of the License at+--+-- http://www.apache.org/licenses/LICENSE-2.0+--+-- Unless required by applicable law or agreed to in writing, software+-- distributed under the License is distributed on an "AS IS" BASIS,+-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.+-- See the License for the specific language governing permissions and+-- limitations under the License.+--+{-# LANGUAGE OverloadedStrings #-}+{-# LANGUAGE DoRec #-}+-- | Fluent Logger for Haskell+module Network.Fluent.Logger+ ( -- * Logger+ FluentLogger+ , withFluentLogger+ , newFluentLogger+ , closeFluentLogger+ -- * Settings+ , FluentSettings(..)+ , defaultFluentSettings+ -- * Post+ , post+ , postWithTime+ ) where++import qualified Data.ByteString as BS+import Data.ByteString.Char8 ( unpack )+import qualified Data.ByteString.Lazy as LBS+import Data.Monoid ( mconcat )+import Data.Time ( getCurrentTime, formatTime )+import qualified Network.Socket as NS+import Network.Socket.Options ( setRecvTimeout, setSendTimeout )+import Network.Socket.ByteString.Lazy ( sendAll )+import Control.Monad ( void, forever, when )+import Control.Applicative ( (<$>) )+import Control.Concurrent ( ThreadId, forkIO, killThread )+import Control.Concurrent.STM ( atomically+ , TChan, newTChanIO, readTChan, peekTChan, writeTChan+ , TVar, newTVarIO, readTVar, modifyTVar )+import Control.Exception ( SomeException, handle, bracket, throwIO )+import System.Locale ( defaultTimeLocale )+import Data.MessagePack ( Packable, pack )+import Data.Int ( Int64 )++-- | Fluent logger settings+--+-- Since 0.1.0.0+--+data FluentSettings =+ FluentSettings+ { fluentSettingsTag :: BS.ByteString+ , fluentSettingsHost :: BS.ByteString+ , fluentSettingsPort :: Int+ , fluentSettingsTimeout :: Double+ , fluentSettingsBufferLimit :: Int64+ }++-- | Default fluent logger settings+--+-- Since 0.1.0.0+--+defaultFluentSettings :: FluentSettings+defaultFluentSettings =+ FluentSettings+ { fluentSettingsTag = BS.empty+ , fluentSettingsHost = "localhost"+ , fluentSettingsPort = 24224+ , fluentSettingsTimeout = 3.0+ , fluentSettingsBufferLimit = 1024*1024+ }++-- | Fluent logger+--+-- Since 0.1.0.0+--+data FluentLogger =+ FluentLogger+ { fluentLoggerChan :: TChan LBS.ByteString+ , fluentLoggerBuffered :: TVar Int64+ , fluentLoggerSettings :: FluentSettings+ , fluentLoggerThread :: ThreadId+ }++getSocket :: BS.ByteString -> Int -> Int64 -> IO NS.Socket+getSocket host port timeout = do+ let hints = NS.defaultHints { NS.addrFlags = [NS.AI_ADDRCONFIG]+ , NS.addrSocketType = NS.Stream+ }+ (addr:_) <- NS.getAddrInfo (Just hints) (Just $ unpack host) (Just $ show port)+ sock <- NS.socket (NS.addrFamily addr) (NS.addrSocketType addr) (NS.addrProtocol addr)+ setRecvTimeout sock timeout+ setSendTimeout sock timeout+ let onErr :: SomeException -> IO a+ onErr e = NS.sClose sock >> throwIO e+ handle onErr $ do+ NS.connect sock $ NS.addrAddress addr+ return sock++sender :: FluentLogger -> IO ()+sender logger = forever $ connectFluent logger >>= sendFluent logger++connectFluent :: FluentLogger -> IO NS.Socket+connectFluent logger = handle (retry logger) (getSocket host port timeout)+ where+ host = fluentSettingsHost $ fluentLoggerSettings logger+ port = fluentSettingsPort $ fluentLoggerSettings logger+ timeout = round $ fluentSettingsTimeout (fluentLoggerSettings logger) * 1000000+ retry :: FluentLogger -> SomeException -> IO NS.Socket+ retry = const . connectFluent++sendFluent :: FluentLogger -> NS.Socket -> IO ()+sendFluent logger sock = handle (done sock) $ do+ entry <- atomically $ peekTChan chan+ sendAll sock entry+ atomically $ do+ void $ readTChan chan+ modifyTVar buffered (subtract $ LBS.length entry)+ sendFluent logger sock+ where+ chan = fluentLoggerChan logger+ buffered = fluentLoggerBuffered logger+ done :: NS.Socket -> SomeException -> IO ()+ done = const . NS.sClose++-- | Create a fluent logger+--+-- Since 0.1.0.0+--+newFluentLogger :: FluentSettings -> IO FluentLogger+newFluentLogger set = do+ tchan <- newTChanIO+ tvar <- newTVarIO 0+ let mkLogger tid = FluentLogger { fluentLoggerChan = tchan+ , fluentLoggerBuffered = tvar+ , fluentLoggerSettings = set+ , fluentLoggerThread = tid+ }+ rec logger <- mkLogger <$> forkIO (sender logger)+ return logger++-- | Close logger+--+-- Since 0.1.0.0+--+closeFluentLogger :: FluentLogger -> IO ()+closeFluentLogger = killThread . fluentLoggerThread++-- | Create a fluent logger and run given action.+--+-- Since 0.1.0.0+--+withFluentLogger :: FluentSettings -> (FluentLogger -> IO a) -> IO a+withFluentLogger set = bracket (newFluentLogger set) closeFluentLogger++getCurrentEpochTime :: IO Int+getCurrentEpochTime =+ read . formatTime defaultTimeLocale "%s" <$> getCurrentTime++-- | Post a message.+--+-- Since 0.1.0.0+--+post :: Packable a => FluentLogger -> BS.ByteString -> a -> IO ()+post logger label obj = do+ time <- getCurrentEpochTime+ postWithTime logger label time obj++-- | Post a message with given time.+--+-- Since 0.1.0.0+--+postWithTime :: Packable a => FluentLogger -> BS.ByteString -> Int -> a -> IO ()+postWithTime logger label time obj = atomically $ do+ s <- readTVar buffered+ when (s + len <= limit) $ do+ writeTChan chan entry+ modifyTVar buffered (+ len)+ where+ tag = fluentSettingsTag $ fluentLoggerSettings logger+ lbl = if BS.null label then tag else mconcat [ tag, ".", label ]+ entry = pack ( lbl, time, obj )+ len = LBS.length entry+ chan = fluentLoggerChan logger+ buffered = fluentLoggerBuffered logger+ limit = fluentSettingsBufferLimit $ fluentLoggerSettings logger
+ Setup.hs view
@@ -0,0 +1,2 @@+import Distribution.Simple+main = defaultMain
+ benchmark/benchmark.hs view
@@ -0,0 +1,14 @@+{-# LANGUAGE OverloadedStrings #-}+import Network.Fluent.Logger+import Criterion.Main++set :: FluentSettings+set = defaultFluentSettings { fluentSettingsTag = "debug"+ , fluentSettingsHost = "127.0.0.1"+ }++main :: IO ()+main = withFluentLogger set $ \logger -> do+ defaultMain [ bgroup "post" [ bench "1 to 1000" $ nfIO $ mapM_ (post logger "loop") [1..1000::Int]+ ]+ ]
+ fluent-logger.cabal view
@@ -0,0 +1,56 @@+name: fluent-logger+version: 0.1.0.0+synopsis: A structured logger for Fluentd (Haskell)+description: A structured logger for Fluentd (Haskell) <http://fluentd.org/>+license: OtherLicense+license-file: LICENSE+author: Noriyuki OHKAWA <n.ohkawa@gmail.com>+maintainer: Noriyuki OHKAWA <n.ohkawa@gmail.com>+copyright: Copyright (c) 2012, Noriyuki OHKAWA+category: Network+build-type: Simple+cabal-version: >=1.8+tested-with: GHC ==7.4.2++source-repository head+ type: git+ location: https://github.com/notogawa/fluent-logger-haskell.git++library+ exposed-modules: Network.Fluent.Logger+ ghc-options: -Wall+ build-depends: base ==4.*+ , bytestring+ , network >=2.3.0.13 && <2.5+ , network-socket-options >=0.1 && <0.3+ , time >=1.2.0.3+ , old-locale+ , msgpack >=0.7.1 && <0.8+ , stm >=2.3++test-suite fluent-logger-spec+ hs-source-dirs: test+ type: exitcode-stdio-1.0+ main-is: Spec.hs+ other-modules: MockServer+ , Network.Fluent.LoggerSpec+ build-depends: base ==4.*+ , fluent-logger+ , network+ , msgpack+ , network-conduit+ , conduit+ , bytestring+ , transformers+ , hspec+ , attoparsec+ , old-locale+ , time++benchmark fluent-logger-benchmark+ hs-source-dirs: benchmark+ type: exitcode-stdio-1.0+ main-is: benchmark.hs+ build-depends: base ==4.*+ , fluent-logger+ , criterion
+ test/MockServer.hs view
@@ -0,0 +1,68 @@+{-# LANGUAGE OverloadedStrings #-}+module MockServer+ (+ MockServer+ , mockServerHost+ , mockServerPort+ , withMockServer+ , recvMockServer+ ) where++import Data.Conduit+import Data.Conduit.Network+import Data.ByteString ( ByteString )+import Control.Concurrent+import Control.Monad.IO.Class+import Control.Exception+import Data.MessagePack ( Unpackable, get )+import Data.Attoparsec+import Data.Monoid++data MockServer a = MockServer { mockServerChan :: Chan a+ , mockServerThread :: ThreadId+ }++mockServerHost :: ByteString+mockServerHost = "127.0.0.1"++mockServerPort :: Int+mockServerPort = 24224++mockServerSettings :: ServerSettings IO+mockServerSettings = serverSettings mockServerPort HostAny++app :: (MonadIO m, Unpackable a) => Chan a -> AppData m -> m ()+app chan ad = appSource ad $$ sinkChan chan ""++sinkChan :: (MonadIO m, Unpackable a) => Chan a -> ByteString -> Sink ByteString m ()+sinkChan chan carry = do+ mx <- await+ case mx of+ Nothing -> return ()+ Just x -> parseAsPossible chan (carry <> x) >>= sinkChan chan++parseAsPossible :: (MonadIO m, Unpackable a) => Chan a -> ByteString -> m ByteString+parseAsPossible chan src =+ case parse get src of+ Done t r -> liftIO (writeChan chan r) >> parseAsPossible chan t+ _ -> return src++withMockServer :: Unpackable a => (MockServer a -> IO ()) -> IO ()+withMockServer = bracket runMockServer stopMockServer++recvMockServer :: Unpackable a => MockServer a -> IO a+recvMockServer server = readChan (mockServerChan server)++runMockServer :: Unpackable a => IO (MockServer a)+runMockServer = do+ chan <- newChan+ tid <- forkIO $ runTCPServer mockServerSettings $ app chan+ threadDelay 10000+ return MockServer { mockServerChan = chan+ , mockServerThread = tid+ }++stopMockServer :: Unpackable a => MockServer a -> IO ()+stopMockServer server = do+ killThread $ mockServerThread server+ threadDelay 10000
+ test/Network/Fluent/LoggerSpec.hs view
@@ -0,0 +1,114 @@+{-# LANGUAGE OverloadedStrings #-}+module Network.Fluent.LoggerSpec ( spec ) where++import Control.Applicative+import Control.Concurrent+import Control.Monad+import Data.ByteString ( ByteString )+import Data.MessagePack+import Data.Time ( getCurrentTime, formatTime )+import System.Locale ( defaultTimeLocale )+import Test.Hspec++import Network.Fluent.Logger+import MockServer++spec :: Spec+spec = do+ describe "post" $ do+ it "posts a message" postPostsMessage+ it "keeps message order" postKeepsMessageOrder+ it "buffers message if server down" postBuffersMessageIfServerDown+ -- it "buffers message if lost connection" postBuffersMessageIfLostConnection+ -- it "losts message if buffer is over" postLostsMessageIfBufferIsOver+ describe "postWithTime" $ do+ it "posts a message with given time" postWithTimePostsMessageWithGivenTime+++postSettings =+ defaultFluentSettings { fluentSettingsTag = "post"+ , fluentSettingsHost = mockServerHost+ , fluentSettingsPort = mockServerPort+ }++postWithTimeSettings =+ defaultFluentSettings { fluentSettingsTag = "postWithTime"+ , fluentSettingsHost = mockServerHost+ , fluentSettingsPort = mockServerPort+ }++getCurrentEpochTime :: IO Int+getCurrentEpochTime =+ read . formatTime defaultTimeLocale "%s" <$> getCurrentTime++postPostsMessage :: IO ()+postPostsMessage =+ withFluentLogger postSettings $ \logger -> do+ let label = "PostsMessage"+ withMockServer $ \server -> do+ preTime <- getCurrentEpochTime+ post logger label ( "test" :: String )+ postTime <- getCurrentEpochTime+ (tag, time, content) <- recvMockServer server :: IO (ByteString, Int, String)+ tag `shouldBe` "post.PostsMessage"+ content `shouldBe` "test"++postKeepsMessageOrder :: IO ()+postKeepsMessageOrder =+ withFluentLogger postSettings $ \logger -> do+ let label = "KeepsMessageOrder"+ withMockServer $ \server -> do+ let xs = [1..1024::Int]+ mapM_ (post logger label) xs+ forM_ xs $ \n -> do+ (_, _, content) <- recvMockServer server :: IO (ByteString, Int, Int)+ content `shouldBe` n++postBuffersMessageIfServerDown :: IO ()+postBuffersMessageIfServerDown =+ withFluentLogger postSettings $ \logger -> do+ let label = "BuffersMessageIfServerDown"+ post logger label ( 1 :: Int )+ withMockServer $ \server -> do+ post logger label ( 2 :: Int )+ (_, _, content) <- recvMockServer server :: IO (ByteString, Int, Int)+ content `shouldBe` 1+ (_, _, content) <- recvMockServer server+ content `shouldBe` 2++postBuffersMessageIfLostConnection :: IO ()+postBuffersMessageIfLostConnection =+ withFluentLogger postSettings $ \logger -> do+ let label = "BuffersMessageIfLostConnection"+ withMockServer $ \server -> do+ post logger label ( 1 :: Int )+ (_, _, content) <- recvMockServer server :: IO (ByteString, Int, Int)+ content `shouldBe` 1+ post logger label ( 2 :: Int )+ withMockServer $ \server -> do+ post logger label ( 3 :: Int )+ (_, _, content) <- recvMockServer server :: IO (ByteString, Int, Int)+ content `shouldBe` 2+ (_, _, content) <- recvMockServer server :: IO (ByteString, Int, Int)+ content `shouldBe` 3++postLostsMessageIfBufferIsOver :: IO ()+postLostsMessageIfBufferIsOver =+ withFluentLogger postSettings $ \logger -> do+ let label = "LostsMessageIfBufferIsOver"+ post logger label ( 1 :: Int )+ withMockServer $ \server -> do+ post logger label ( 2 :: Int )+ (_, _, content) <- recvMockServer server :: IO (ByteString, Int, Int)+ content `shouldBe` 2++postWithTimePostsMessageWithGivenTime :: IO ()+postWithTimePostsMessageWithGivenTime =+ withFluentLogger postWithTimeSettings $ \logger -> do+ let label = "PostsMessageWithGivenTime"+ withMockServer $ \server -> do+ postWithTime logger label 123456 ( "test" :: String )+ (tag, time, content) <- recvMockServer server :: IO (ByteString, Int, String)+ tag `shouldBe` "postWithTime.PostsMessageWithGivenTime"+ time `shouldBe` 123456+ content `shouldBe` "test"
+ test/Spec.hs view
@@ -0,0 +1,1 @@+{-# OPTIONS_GHC -F -pgmF cabal-dev/bin/hspec-discover #-}