root / src / Ganeti / Path.hs @ 13d26b66
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{-| Path-related helper functions. |
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-} |
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{- |
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Copyright (C) 2012, 2014 Google Inc. |
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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This program is distributed in the hope that it will be useful, but |
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WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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02110-1301, USA. |
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-} |
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module Ganeti.Path |
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( dataDir |
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, runDir |
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, logDir |
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, socketDir |
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, defaultMasterSocket |
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, defaultQuerySocket |
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, defaultWConfdSocket |
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, confdHmacKey |
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, clusterConfFile |
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, watcherPauseFile |
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, nodedCertFile |
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, nodedClientCertFile |
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, queueDir |
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, jobQueueSerialFile |
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, jobQueueLockFile |
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, jobQueueDrainFile |
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, jobQueueArchiveSubDir |
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, instanceReasonDir |
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, getInstReasonFilename |
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) where |
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import System.FilePath |
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import System.Posix.Env (getEnvDefault) |
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import AutoConf |
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-- | Simple helper to concat two paths. |
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pjoin :: IO String -> String -> IO String |
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pjoin a b = do |
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a' <- a |
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return $ a' </> b |
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-- | Returns the root directory, which can be either the real root or |
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-- the virtual root. |
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getRootDir :: IO FilePath |
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getRootDir = getEnvDefault "GANETI_ROOTDIR" "" |
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-- | Prefixes a path with the current root directory. |
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addNodePrefix :: FilePath -> IO FilePath |
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addNodePrefix path = do |
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root <- getRootDir |
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return $ root ++ path |
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-- | Directory for data. |
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dataDir :: IO FilePath |
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dataDir = addNodePrefix $ AutoConf.localstatedir </> "lib" </> "ganeti" |
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-- | Helper for building on top of dataDir (internal). |
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dataDirP :: FilePath -> IO FilePath |
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dataDirP = (dataDir `pjoin`) |
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-- | Directory for runtime files. |
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runDir :: IO FilePath |
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runDir = addNodePrefix $ AutoConf.localstatedir </> "run" </> "ganeti" |
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-- | Directory for log files. |
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logDir :: IO FilePath |
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logDir = addNodePrefix $ AutoConf.localstatedir </> "log" </> "ganeti" |
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-- | Directory for Unix sockets. |
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socketDir :: IO FilePath |
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socketDir = runDir `pjoin` "socket" |
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-- | The default path for the master-daemon LUXI socket. |
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defaultMasterSocket :: IO FilePath |
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defaultMasterSocket = socketDir `pjoin` "ganeti-master" |
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-- | The default LUXI socket for queries. |
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defaultQuerySocket :: IO FilePath |
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defaultQuerySocket = socketDir `pjoin` "ganeti-query" |
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-- | The default WConfD socket for queries. |
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defaultWConfdSocket :: IO FilePath |
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defaultWConfdSocket = socketDir `pjoin` "ganeti-wconfd" |
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-- | Path to file containing confd's HMAC key. |
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confdHmacKey :: IO FilePath |
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confdHmacKey = dataDirP "hmac.key" |
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-- | Path to cluster configuration file. |
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clusterConfFile :: IO FilePath |
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clusterConfFile = dataDirP "config.data" |
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-- | Path to the watcher pause file. |
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watcherPauseFile :: IO FilePath |
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watcherPauseFile = dataDirP "watcher.pause" |
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-- | Path to the noded certificate. |
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nodedCertFile :: IO FilePath |
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nodedCertFile = dataDirP "server.pem" |
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-- | Path to the noded client certificate. |
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nodedClientCertFile :: IO FilePath |
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nodedClientCertFile = dataDirP "client.pem" |
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-- | Job queue directory. |
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queueDir :: IO FilePath |
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queueDir = dataDirP "queue" |
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-- | Job queue serial file. |
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jobQueueSerialFile :: IO FilePath |
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jobQueueSerialFile = queueDir `pjoin` "serial" |
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-- | Job queue lock file |
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jobQueueLockFile :: IO FilePath |
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jobQueueLockFile = queueDir `pjoin` "lock" |
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-- | Job queue drain file |
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jobQueueDrainFile :: IO FilePath |
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jobQueueDrainFile = queueDir `pjoin` "drain" |
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-- | Job queue archive directory. |
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jobQueueArchiveSubDir :: FilePath |
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jobQueueArchiveSubDir = "archive" |
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-- | Directory containing the reason trails for the last change of status of |
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-- instances. |
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instanceReasonDir :: IO FilePath |
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instanceReasonDir = runDir `pjoin` "instance-reason" |
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-- | The path of the file containing the reason trail for an instance, given the |
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-- instance name. |
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getInstReasonFilename :: String -> IO FilePath |
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getInstReasonFilename instName = instanceReasonDir `pjoin` instName |