preparation for feed generation

[Rakka.git] / Rakka / Storage / Impl.hs

diff --git a/Rakka/Storage/Impl.hs b/Rakka/Storage/Impl.hs
index c3246929257076dc45ab8ce541d7551a232a1550..3b48f0c10150c50c5550664cd5d9c47df81669ed 100644 (file)
--- a/Rakka/Storage/Impl.hs
+++ b/Rakka/Storage/Impl.hs
@@ -1,30 +1,31 @@
 module Rakka.Storage.Impl
     ( getPage'
+    , putPage'
+    , deletePage'
+    , getDirContents'
     , startIndexManager
     )
     where
 
 import           Control.Concurrent
 import           Control.Concurrent.STM
-import           Control.Exception
 import           Control.Monad
 import           Data.Maybe
 import           Data.Set (Set)
 import qualified Data.Set as S
+import           Network.HTTP.Lucu
 import           Network.URI
 import           Rakka.Page
 import           Rakka.Storage.DefaultPage
+import           Rakka.Storage.Repos
 import           Rakka.Storage.Types
 import           Subversion.Types
+import           Subversion.FileSystem
+import           Subversion.Repository
 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)
 
 
@@ -33,20 +34,41 @@ logger = "Rakka.Storage"
 
 
 getPage' :: Repository -> PageName -> Maybe RevNum -> IO (Maybe Page)
-getPage' _repos name _rev
-    = loadDefaultPage name -- FIXME
+getPage' repos name rev
+    = do page <- loadPageInRepository repos name rev
+         case page of
+           Nothing -> loadDefaultPage name
+           p       -> return p
+
+
+putPage' :: Repository -> Maybe String -> Page -> IO StatusCode
+putPage' = putPageIntoRepository
+
+
+deletePage' :: Repository -> Maybe String -> PageName -> IO StatusCode
+deletePage' = deletePageFromRepository
 
 
 findAllPages :: Repository -> RevNum -> IO (Set PageName)
 findAllPages _     0   = findAllDefaultPages
-findAllPages _repos _rev
-    = findAllDefaultPages -- FIXME
+findAllPages repos rev = do reposPages   <- findAllPagesInRevision repos rev
+                            defaultPages <- findAllDefaultPages
+                            return (reposPages `S.union` defaultPages)
 
 
 findChangedPages :: Repository -> RevNum -> RevNum -> IO (Set PageName)
 findChangedPages repos 0      newRev = findAllPages repos newRev
-findChangedPages _repos _oldRev _newRev
-    = fail "FIXME: not impl"
+findChangedPages repos oldRev newRev
+    = mapM (findChangedPagesAtRevision repos) [oldRev + 1 .. newRev]
+      >>=
+      return . S.unions
+
+
+getDirContents' :: Repository -> PageName -> Maybe RevNum -> IO [PageName]
+getDirContents' repos name rev
+    = do reposPages   <- getDirContentsInRevision repos name rev
+         defaultPages <- getDefaultDirContents name
+         return $ S.toList (reposPages `S.union` defaultPages)
 
 
 getCurrentRevNum :: Repository -> IO RevNum
@@ -109,6 +131,7 @@ openIndex indexDir revFile
                               $ removeFile revFile
 
                      Right index <- openDatabase indexDir (Writer [Create []])
+                     addAttrIndex index "@type"          StrIndex
                      addAttrIndex index "@uri"           SeqIndex
                      addAttrIndex index "rakka:revision" SeqIndex
                      noticeM logger ("Created an H.E. index on " ++ indexDir)
@@ -169,37 +192,15 @@ updateIndex index repos mkDraft rev name
 
 
 updateIndexRev :: FilePath -> (RevNum -> IO RevNum) -> IO ()
-updateIndexRev revFile f = bracket acquireLock releaseLock update
+updateIndexRev revFile f = withFile revFile ReadWriteMode update
     where
-      acquireLock :: IO Fd
-      acquireLock
-          = do fd <- openFd revFile ReadWrite (Just stdFileMode) defaultFileFlags
-               waitToSetLock fd (WriteLock, AbsoluteSeek, 0, 0)
-               return fd
-
-      releaseLock :: Fd -> IO ()
-      releaseLock fd
-          = setLock fd (Unlock, AbsoluteSeek, 0, 0)
-
-      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")
+      update :: Handle -> IO ()
+      update h = do eof  <- hIsEOF h
+                    rev  <- if eof then
+                                return 0
+                            else
+                                hGetLine h >>= return . read
+                    rev' <- f rev
+                    hSeek h AbsoluteSeek 0
+                    hSetFileSize h 0
+                    hPutStrLn h (show rev')