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50 lines
1.7 KiB
Haskell
50 lines
1.7 KiB
Haskell
module Handler.StackageIndex where
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import Import
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import Data.BlobStore
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import Network.Wai (responseBuilder)
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getStackageIndexR :: PackageSetIdent -> Handler TypedContent
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getStackageIndexR ident = do
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msrc <- storeRead $ CabalIndex ident
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case msrc of
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Nothing -> notFound
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Just src -> do
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setEtag $ toPathPiece ident
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addHeader "content-disposition" "attachment; filename=\"00-index.tar.gz\""
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neverExpires
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cacheSeconds 31536000
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respondSource "application/x-gzip" $ mapOutput (Chunk . toBuilder) src
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-- FIXME BEGIN: move into yesod-core
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-- | Send a 304 not modified response immediately. This is a short-circuiting
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-- action.
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notModified :: MonadHandler m => m a
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notModified = sendWaiResponse $ responseBuilder status304 [] mempty
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-- | Check the if-none-match header and, if it matches the given value, return
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-- a 304 not modified response. Otherwise, set the etag header to the given
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-- value.
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setEtag :: MonadHandler m => Text -> m ()
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setEtag etag = do
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mmatch <- lookupHeader "if-none-match"
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case mmatch of
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Just x | encodeUtf8 etag == x -> notModified
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_ -> addHeader "etag" etag
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-- FIXME END: move into yesod-core
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getStackageBundleR :: PackageSetIdent -> Handler TypedContent
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getStackageBundleR ident = do
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msrc <- storeRead $ SnapshotBundle ident
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case msrc of
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Nothing -> notFound
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Just src -> do
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addHeader "content-disposition" $ mconcat
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[ "attachment; filename=\"bundle-"
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, toPathPiece ident
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, ".tar.gz\""
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]
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respondSource "application/x-gzip" $ mapOutput (Chunk . toBuilder) src
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