33 lines
820 B
Haskell
33 lines
820 B
Haskell
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-- | This module defines a connection interface. It could be a regular
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-- network connection, TLS connection, a mock or anything else.
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module Database.MongoDB.Transport (
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Transport(..),
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fromHandle,
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) where
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import Prelude hiding (read)
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import Data.ByteString (ByteString)
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import qualified Data.ByteString as ByteString
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import System.IO
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-- | Abstract transport interface
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--
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-- `read` should return `ByteString.null` on EOF
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data Transport = Transport {
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read :: Int -> IO ByteString,
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write :: ByteString -> IO (),
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flush :: IO (),
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close :: IO ()}
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fromHandle :: Handle -> IO Transport
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-- ^ Make connection form handle
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fromHandle handle = do
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return Transport
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{ read = ByteString.hGet handle
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, write = ByteString.hPut handle
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, flush = hFlush handle
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, close = hClose handle
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}
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