module Rakka.Storage
( Storage
+ -- re-export from Rakka.Storage.Types
+ , SearchResult(..)
+ , SnippetFragment(..)
+
, mkStorage -- private
, getPage
, putPage
+ , deletePage
, getPageA
, putPageA
+ , deletePageA
+
+ , getAttachment
+ , putAttachment
+
+ , getDirContents
+ , getDirContentsA
+
+ , searchPages
+
+ , rebuildIndex
)
where
import Control.Arrow.ArrowIO
import Control.Concurrent.STM
-import Control.Exception
import Control.Monad
import Control.Monad.Trans
-import Data.Set (Set)
-import qualified Data.Set as S
+import Data.Maybe
+import Network.HTTP.Lucu
+import Rakka.Attachment
import Rakka.Page
-import Rakka.Storage.DefaultPage
+import Rakka.Storage.Impl
+import Rakka.Storage.Types
import Subversion.Types
-import System.Directory
-import System.FilePath
import System.IO
-import System.Log.Logger
-import System.Posix.Files
-import System.Posix.Types
-import System.Posix.IO
-import Subversion.FileSystem
import Subversion.Repository
import Text.HyperEstraier hiding (WriteLock)
-logger = "Rakka.Storage"
-
-
-data Storage
- = Storage {
- stoIndexRevLocked :: !(TVar Bool)
- , stoIndexRevFile :: !FilePath
- , stoIndexDB :: !Database
- , stoRepository :: !Repository
- , stoMakeDraft :: !(Page -> IO Document)
- }
-
mkStorage :: FilePath -> Repository -> (Page -> IO Document) -> IO Storage
mkStorage lsdir repos mkDraft
- = do let indexDir = lsdir </> "index"
- revFile = lsdir </> "indexRev"
-
- revLocked <- newTVarIO False
- indexDB <- openIndex indexDir revFile
-
+ = do chan <- startIndexManager lsdir repos mkDraft
let sto = Storage {
- stoIndexRevLocked = revLocked
- , stoIndexRevFile = revFile
- , stoIndexDB = indexDB
- , stoRepository = repos
- , stoMakeDraft = mkDraft
+ stoRepository = repos
+ , stoIndexChan = chan
}
-
syncIndex sto
return sto
getPage = ((liftIO .) .) . getPage' . stoRepository
-getPage' :: Repository -> PageName -> Maybe RevNum -> IO (Maybe Page)
-getPage' repos name rev
- = loadDefaultPage name -- FIXME
+putPage :: MonadIO m => Storage -> Maybe String -> Page -> m StatusCode
+putPage sto userID page
+ = liftIO $ do st <- putPage' (stoRepository sto) userID page
+ syncIndex sto
+ return st
-putPage :: MonadIO m => Storage -> Page -> RevNum -> m ()
-putPage sto page oldRev
- = error "FIXME: not implemented"
+deletePage :: MonadIO m => Storage -> Maybe String -> PageName -> m StatusCode
+deletePage sto userID name
+ = liftIO $ do st <- deletePage' (stoRepository sto) userID name
+ syncIndex sto
+ return st
getPageA :: ArrowIO a => Storage -> a (PageName, Maybe RevNum) (Maybe Page)
getPageA = arrIO2 . getPage
-putPageA :: ArrowIO a => Storage -> a (Page, RevNum) ()
+putPageA :: ArrowIO a => Storage -> a (Maybe String, Page) StatusCode
putPageA = arrIO2 . putPage
-findAllPages :: Storage -> RevNum -> IO (Set PageName)
-findAllPages _ 0 = findAllDefaultPages
-findAllPages sto rev
- = findAllDefaultPages -- FIXME
-
-
-findChangedPages :: Storage -> RevNum -> RevNum -> IO (Set PageName)
-findChangedPages sto 0 newRev = findAllPages sto newRev
-findChangedPages sto oldRev newRev
- = fail "FIXME: not impl"
+deletePageA :: ArrowIO a => Storage -> a (Maybe String, PageName) StatusCode
+deletePageA = arrIO2 . deletePage
-getCurrentRevNum :: Storage -> IO RevNum
-getCurrentRevNum sto
- = getRepositoryFS (stoRepository sto) >>= getYoungestRev
+getDirContents :: MonadIO m => Storage -> PageName -> Maybe RevNum -> m [PageName]
+getDirContents = ((liftIO .) .) . getDirContents' . stoRepository
--- casket を R/W モードで開く。成功したらそのまま返し、失敗したら
--- indexDir と revFile を削除してから casket を R/W モードで開く。
-openIndex :: FilePath -> FilePath -> IO Database
-openIndex indexDir revFile
- = do ret <- openDatabase indexDir (Writer [])
- case ret of
- Right db
- -> do debugM logger ("Opened an H.E. database on " ++ indexDir)
- return db
+getDirContentsA :: ArrowIO a => Storage -> a (PageName, Maybe RevNum) [PageName]
+getDirContentsA = arrIO2 . getDirContents
- Left err
- -> do warningM logger ("Failed to open an H.E. database on "
- ++ indexDir ++ ": " ++ show err)
- indexExists <- doesDirectoryExist indexDir
- when indexExists
- $ removeDirectoryRecursive indexDir
+searchPages :: MonadIO m => Storage -> Condition -> m [SearchResult]
+searchPages sto cond
+ = liftIO $
+ do var <- newEmptyTMVarIO
+ atomically $ writeTChan (stoIndexChan sto) (SearchIndex cond var)
+ atomically $ takeTMVar var
- revFileExists <- doesFileExist revFile
- when revFileExists
- $ removeFile revFile
- Right db <- openDatabase indexDir (Writer [Create []])
- noticeM logger ("Created an H.E. database on " ++ indexDir)
-
- return db
+rebuildIndex :: MonadIO m => Storage -> m ()
+rebuildIndex sto
+ = liftIO $ atomically $ writeTChan (stoIndexChan sto) RebuildIndex
syncIndex :: Storage -> IO ()
syncIndex sto
- = updateIndexRev sto $ \ oldRev ->
- do debugM logger ("The index revision is currently " ++ show oldRev)
-
- newRev <- getCurrentRevNum sto
- debugM logger ("The repository revision is currently " ++ show newRev)
-
- when (newRev /= oldRev) (syncIndex' oldRev newRev)
- return newRev
- where
- syncIndex' :: RevNum -> RevNum -> IO ()
- syncIndex' oldRev newRev
- = do pages <- findChangedPages sto oldRev newRev
- mapM_ (updateIndex sto newRev) (S.toList pages)
-
-
-updateIndex :: Storage -> RevNum -> PageName -> IO ()
-updateIndex sto rev name
- = do pageM <- getPage sto name (Just rev)
- case pageM of
- -- ページが削除された
- Nothing
- -> do docIdM <- getDocIdByURI (stoIndexDB sto) (mkRakkaURI name)
- case docIdM of
- Nothing -> return ()
- Just docId -> do removeDocument (stoIndexDB sto) docId [CleaningRemove]
- infoM logger ("Removed page " ++ name ++ " from the index")
- Just page
- -> do draft <- stoMakeDraft sto page
- putDocument (stoIndexDB sto) draft [CleaningPut]
- infoM logger ("Indexed page " ++ name ++ " of revision " ++ show (pageRevision page))
-
-
-updateIndexRev :: Storage -> (RevNum -> IO RevNum) -> IO ()
-updateIndexRev sto f = bracket acquireLock releaseLock update
- where
- acquireLock :: IO Fd
- acquireLock
- = do atomically $ do revLocked <- readTVar (stoIndexRevLocked sto)
- if revLocked then
- retry
- else
- writeTVar (stoIndexRevLocked sto) True
- fd <- openFd (stoIndexRevFile sto) ReadWrite (Just stdFileMode) defaultFileFlags
- waitToSetLock fd (WriteLock, AbsoluteSeek, 0, 0)
- return fd
-
- releaseLock :: Fd -> IO ()
- releaseLock fd
- = do setLock fd (Unlock, AbsoluteSeek, 0, 0)
- atomically $ writeTVar (stoIndexRevLocked sto) False
-
- update :: Fd -> IO ()
- update fd
- = do fdSeek fd AbsoluteSeek 0
- size <- return . fromIntegral . fileSize =<< getFdStatus fd
- (revStr, gotSize) <- fdRead fd size
- when (size /= gotSize) $ fail ("read " ++ show gotSize ++
- " bytes but expected " ++ show size ++ " bytes")
-
- let rev = case revStr of
- "" -> 0
- _ -> read revStr
-
- rev' <- f rev
-
- let revStr' = show rev' ++ "\n"
- size' = fromIntegral $ length revStr'
-
- fdSeek fd AbsoluteSeek 0
- setFdSize fd 0
- wroteSize <- fdWrite fd revStr'
- when (size' /= wroteSize) $ fail ("wrote " ++ show wroteSize ++
- " bytes but expected " ++ show size' ++ " bytes")
\ No newline at end of file
+ = atomically $ writeTChan (stoIndexChan sto) SyncIndex
+
+
+getAttachment :: (Attachment a, MonadIO m) =>
+ Storage
+ -> PageName
+ -> String
+ -> Maybe RevNum
+ -> m (Maybe a)
+getAttachment = (((liftIO .) .) .) . getAttachment' . stoRepository
+
+
+putAttachment :: (Attachment a, MonadIO m) =>
+ Storage
+ -> Maybe String
+ -> Maybe RevNum
+ -> PageName
+ -> String
+ -> a
+ -> m StatusCode
+putAttachment = (((((liftIO .) .) .) .) .) . putAttachment' . stoRepository
projects / Rakka.git / blobdiff