{-# LANGUAGE LambdaCase, CPP #-} module Puppet.Daemon (initDaemon, logDebug, logInfo, logWarning, logError) where import Puppet.Parser import Puppet.Utils import Puppet.Preferences import Puppet.Stats import Puppet.Interpreter.Types import Puppet.Parser.Types import Puppet.Manifests import Puppet.Interpreter import Puppet.Interpreter.IO import Puppet.Plugins import Puppet.PP import Hiera.Server import Erb.Compute import Data.FileCache import qualified System.Log.Logger as LOG import qualified Data.Text as T import qualified Data.Text.IO as T import qualified Data.Vector as V import qualified Data.HashMap.Strict as HM import Debug.Trace import Control.Lens import qualified Data.Either.Strict as S import Data.Tuple.Strict import Control.Exception #ifdef HRUBY import Foreign.Ruby.Safe #endif loggerName :: String loggerName = "Puppet.Daemon" logDebug :: T.Text -> IO () logDebug = LOG.debugM loggerName . T.unpack logInfo :: T.Text -> IO () logInfo = LOG.infoM loggerName . T.unpack logWarning :: T.Text -> IO () logWarning = LOG.warningM loggerName . T.unpack logError :: T.Text -> IO () logError = LOG.errorM loggerName . T.unpack {-| This is a high level function, that will initialize the parsing and interpretation infrastructure from the 'Prefs' structure, and will return a function that will take a node name, 'Facts' and return either an error or the 'FinalCatalog', along with the dependency graph and catalog of exported resources. It also return a few IO functions that can be used in order to query the daemon for statistics, following the format in "Puppet.Stats". It will internaly initialize a thread for the LUA interpreter, and a thread for the Ruby one. It should cache the AST of every .pp file, and could use a bit of memory. As a comparison, it fits in 60 MB with the author's manifests, but really breathes when given 300 MB of heap space. In this configuration, even if it spawns a ruby process for every template evaluation, it is way faster than the puppet stack. It can optionnaly talk with PuppetDB, by setting an URL in the 'Prefs' data structure. The recommended way to set it to http://localhost:8080 and set a SSH tunnel : > ssh -L 8080:localhost:8080 puppet.host Known bugs : * It might be buggy when top level statements that are not class\/define\/nodes are altered, or when files loaded with require are changed. * The catalog is not computed exactly the same way Puppet does. Take a look at "Puppet.Interpreter.Catalog" for a list of differences. * Parsing incompatibilities are listed in "Puppet.DSL.Parser". * There might be race conditions because file status are checked before they are opened. This means the program might end with an exception when the file is nonexistent. This will need fixing. -} initDaemon :: Preferences IO -> IO DaemonMethods initDaemon prefs = do logDebug "initDaemon" traceEventIO "initDaemon" templateStats <- newStats parserStats <- newStats catalogStats <- newStats pfilecache <- newFileCache let getStatements = parseFunction prefs pfilecache parserStats #ifdef HRUBY intr <- startRubyInterpreter getTemplate <- initTemplateDaemon intr prefs templateStats #else getTemplate <- initTemplateDaemon prefs templateStats #endif hquery <- case prefs ^. hieraPath of Just p -> startHiera p >>= \case Left _ -> return dummyHiera Right x -> return x Nothing -> return dummyHiera luacontainer <- initLuaMaster (T.pack (prefs ^. modulesPath)) let myprefs = prefs & prefExtFuncs %~ HM.union luacontainer return (DaemonMethods (gCatalog myprefs getStatements getTemplate catalogStats hquery) parserStats catalogStats templateStats) gCatalog :: Preferences IO -> ( TopLevelType -> T.Text -> IO (S.Either PrettyError Statement) ) -> (Either T.Text T.Text -> T.Text -> Container ScopeInformation -> IO (S.Either PrettyError T.Text)) -> MStats -> HieraQueryFunc IO -> T.Text -> Facts -> IO (S.Either PrettyError (FinalCatalog, EdgeMap, FinalCatalog, [Resource])) gCatalog prefs getStatements getTemplate stats hquery ndename facts = do logDebug ("Received query for node " <> ndename) traceEventIO ("START gCatalog " <> T.unpack ndename) (stmts :!: warnings) <- measure stats ndename $ getCatalog interpretMonad getStatements getTemplate (prefs ^. prefPDB) ndename facts (prefs ^. natTypes) (prefs ^. prefExtFuncs) hquery defaultImpureMethods (prefs ^. ignoredmodules) mapM_ (\(p :!: m) -> LOG.logM loggerName p (displayS (renderCompact (ttext ndename <> ":" <+> m)) "")) warnings traceEventIO ("STOP gCatalog " <> T.unpack ndename) return stmts parseFunction :: Preferences IO -> FileCache (V.Vector Statement) -> MStats -> TopLevelType -> T.Text -> IO (S.Either PrettyError Statement) parseFunction prefs filecache stats topleveltype toplevelname = case compileFileList prefs topleveltype toplevelname of S.Left rr -> return (S.Left rr) S.Right fname -> do let sfname = T.unpack fname handleFailure :: SomeException -> IO (S.Either String (V.Vector Statement)) handleFailure e = return (S.Left (show e)) x <- measure stats fname (query filecache sfname (parseFile sfname `catch` handleFailure)) case x of S.Right stmts -> filterStatements topleveltype toplevelname stmts S.Left rr -> return (S.Left (PrettyError (red (text rr)))) -- TODO this is wrong, see -- http://docs.puppetlabs.com/puppet/3/reference/lang_namespaces.html#behavior compileFileList :: Preferences IO -> TopLevelType -> T.Text -> S.Either PrettyError T.Text compileFileList prefs TopNode _ = S.Right (T.pack (prefs ^. manifestPath) <> "/site.pp") compileFileList prefs _ name = moduleInfo where moduleInfo | length nameparts == 1 = S.Right (mpath <> "/" <> name <> "/manifests/init.pp") | null nameparts = S.Left "no name parts, error in compilefilelist" | otherwise = S.Right (mpath <> "/" <> head nameparts <> "/manifests/" <> T.intercalate "/" (tail nameparts) <> ".pp") mpath = T.pack (prefs ^. modulesPath) nameparts = T.splitOn "::" name parseFile :: FilePath -> IO (S.Either String (V.Vector Statement)) parseFile fname = do traceEventIO ("START parsing " ++ fname) cnt <- T.readFile fname o <- case runMyParser puppetParser fname cnt of Right r -> traceEventIO ("Stopped parsing " ++ fname) >> return (S.Right r) Left rr -> traceEventIO ("Stopped parsing " ++ fname ++ " (failure: " ++ show rr ++ ")") >> return (S.Left (show rr)) traceEventIO ("STOP parsing " ++ fname) return o