mirror of
https://github.com/unclechu/gRPC-haskell.git
synced 2024-11-05 10:49:42 +01:00
96d12c1e6c
* Tweak runOps param order, inline common op sequences, clean up serverHandleNormalCall
* More ops sequence inlining for clarity, experimenting with Managed
* Checkpoint: preliminary support for all streaming modes; much cleanup/refactoring and api design still needed
* Use mempty for default StatusDetails; tweak bad status matching mechanism
* Preliminary user-facing, server-streaming, low-level api and test
* renaming wibbles
* Preliminary user-facing, client-streaming, low-level api and test
* Move sendMsgs comb to Network.GRPC.LowLevel.Op; misc cleanup/DCR
* Modify bidi streaming to omit request payload
* Add transformers dep
* Preliminary user-facing low-level bidirectional streaming api and test
* Fix missing peek import
* Remove TimeoutSeconds params on streaming mode functions
* Fix serverHandleNormalCall rebase wart
* Fix rebase warts; minor hlint fixes and wibbles
* Post-rebase tweaks to optional payload use in serverRequestCall (i.e., now respects payloadHandling again)
* Cleanup/refactor serverRequestCall
* Fix comment
* Change ServerRWHandler type so that handler does not have to invoke a finalizer
* Change ServerReaderHandler type so that handler does not have to invoke a finalizer
* Simplify serverWriter interface and ServerWriterHandler structure
* Simplify serverRW (get rid of exec param), improve bidi streaming tests
* Use ExceptT in serverRW impl
* Change ServerRWHandler type to pass recv/send operations.
* Renaming
* Define ClientRWHandler, pass recv/send ops
* wibbles
* Use ExceptT in clientRW impl
* Add DataKinded phantom typing to RegisteredMethod; misc cleanup
* Simplify sendMsgs interface; add SingleSend type and related helpers
* Rename SingleSend to SendSingle, use ExceptT to clean up {client,server}Writer and sendMsgs
* More ExceptT cleanup in clientWriter
* Factor out reusable bits of clientWriter
* Shrink ServerReaderHandler
* Delete stale comments
* Use common machinery for all streaming modes; make handler types more consistent
* wibbles
70 lines
2.7 KiB
Haskell
70 lines
2.7 KiB
Haskell
{-# LANGUAGE DataKinds #-}
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{-# LANGUAGE OverloadedLists #-}
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{-# LANGUAGE OverloadedStrings #-}
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{-# LANGUAGE RecordWildCards #-}
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{-# OPTIONS_GHC -fno-warn-missing-signatures #-}
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{-# OPTIONS_GHC -fno-warn-unused-binds #-}
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import Control.Concurrent.Async (async, wait)
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import Control.Monad (forever)
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import Data.ByteString (ByteString)
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import Network.GRPC.LowLevel
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import qualified Network.GRPC.LowLevel.Server.Unregistered as U
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import qualified Network.GRPC.LowLevel.Call.Unregistered as U
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serverMeta :: MetadataMap
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serverMeta = [("test_meta", "test_meta_value")]
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handler :: U.ServerCall
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-> ByteString
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-> IO (ByteString, MetadataMap, StatusCode, StatusDetails)
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handler U.ServerCall{..} reqBody = do
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--putStrLn $ "Got request for method: " ++ show method
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--putStrLn $ "Got metadata: " ++ show reqMeta
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return (reqBody, serverMeta, StatusOk, StatusDetails "")
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unregMain :: IO ()
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unregMain = withGRPC $ \grpc -> do
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withServer grpc (ServerConfig "localhost" 50051 [] []) $ \server -> forever $ do
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result <- U.serverHandleNormalCall server serverMeta handler
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case result of
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Left x -> putStrLn $ "handle call result error: " ++ show x
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Right _ -> return ()
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regMain :: IO ()
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regMain = withGRPC $ \grpc -> do
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let methods = [(MethodName "/echo.Echo/DoEcho", Normal)]
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withServer grpc (ServerConfig "localhost" 50051 methods []) $ \server ->
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forever $ do
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let method = head (normalMethods server)
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result <- serverHandleNormalCall server method serverMeta $
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\_call reqBody _reqMeta -> return (reqBody, serverMeta, StatusOk,
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StatusDetails "")
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case result of
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Left x -> putStrLn $ "registered call result error: " ++ show x
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Right _ -> return ()
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-- | loop to fork n times
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regLoop :: Server -> RegisteredMethod 'Normal -> IO ()
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regLoop server method = forever $ do
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result <- serverHandleNormalCall server method serverMeta $
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\_call reqBody _reqMeta -> return (reqBody, serverMeta, StatusOk,
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StatusDetails "")
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case result of
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Left x -> putStrLn $ "registered call result error: " ++ show x
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Right _ -> return ()
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regMainThreaded :: IO ()
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regMainThreaded = do
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withGRPC $ \grpc -> do
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let methods = [(MethodName "/echo.Echo/DoEcho", Normal)]
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withServer grpc (ServerConfig "localhost" 50051 methods []) $ \server -> do
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let method = head (normalMethods server)
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tid1 <- async $ regLoop server method
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tid2 <- async $ regLoop server method
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wait tid1
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wait tid2
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return ()
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main :: IO ()
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main = regMainThreaded
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