mirror of
https://github.com/unclechu/gRPC-haskell.git
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107 lines
4.1 KiB
Haskell
107 lines
4.1 KiB
Haskell
{-# LANGUAGE LambdaCase #-}
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{-# LANGUAGE OverloadedStrings #-}
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{-# LANGUAGE RecordWildCards #-}
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module LowLevelTests.Op where
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import Control.Concurrent (threadDelay)
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import Data.ByteString (isPrefixOf)
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import Foreign.Storable (peek)
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import Test.Tasty
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import Test.Tasty.HUnit as HU (testCase, (@?=),
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assertBool)
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import Network.GRPC.LowLevel
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import Network.GRPC.LowLevel.Call
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import Network.GRPC.LowLevel.Client
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import Network.GRPC.LowLevel.Server
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import Network.GRPC.LowLevel.Op
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import Network.GRPC.LowLevel.CompletionQueue
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lowLevelOpTests :: TestTree
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lowLevelOpTests = testGroup "Synchronous unit tests of low-level Op interface"
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[testCancelWhileHandling
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,testCancelFromServer]
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testCancelWhileHandling :: TestTree
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testCancelWhileHandling =
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testCase "Client/Server - cancel after handler starts does nothing" $
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runSerialTest $ \grpc ->
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withClientServerUnaryCall grpc $
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\(Client{..}, Server{..}, cc@ClientCall{..}, ServerCall{..}) -> do
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withOpArrayAndCtxts serverEmptyRecvOps $ \(opArray, ctxts) -> do
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tag <- newTag serverCQ
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startBatch serverCQ unServerCall opArray 3 tag
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pluck serverCQ tag (Just 1)
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let (OpRecvCloseOnServerContext pcancelled) = last ctxts
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cancelledBefore <- peek pcancelled
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cancelledBefore @?= 0
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clientCallCancel cc
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threadDelay 1000000
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cancelledAfter <- peek pcancelled
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cancelledAfter @?= 0
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return $ Right ()
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testCancelFromServer :: TestTree
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testCancelFromServer =
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testCase "Client/Server - client receives server cancellation" $
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runSerialTest $ \grpc ->
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withClientServerUnaryCall grpc $
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\(Client{..}, Server{..}, ClientCall{..}, sc@ServerCall{..}) -> do
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serverCallCancel sc StatusPermissionDenied "TestStatus"
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clientRes <- runOps unClientCall clientCQ clientRecvOps
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case clientRes of
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Left x -> error $ "Client recv error: " ++ show x
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Right [_,_,OpRecvStatusOnClientResult _ code details] -> do
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code @?= StatusPermissionDenied
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assertBool "Received status details or RST_STREAM error" $
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details == "TestStatus"
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||
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isPrefixOf "Received RST_STREAM" details
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return $ Right ()
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wrong -> error $ "Unexpected op results: " ++ show wrong
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runSerialTest :: (GRPC -> IO (Either GRPCIOError ())) -> IO ()
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runSerialTest f =
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withGRPC f >>= \case Left x -> error $ show x
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Right () -> return ()
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withClientServerUnaryCall :: GRPC
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-> ((Client, Server, ClientCall, ServerCall)
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-> IO (Either GRPCIOError a))
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-> IO (Either GRPCIOError a)
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withClientServerUnaryCall grpc f = do
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withClient grpc clientConf $ \c -> do
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crm <- clientRegisterMethod c "/foo" Normal
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withServer grpc serverConf $ \s ->
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withClientCall c crm 10 $ \cc -> do
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let srm = head (registeredMethods s)
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-- NOTE: We need to send client ops here or else `withServerCall` hangs,
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-- because registered methods try to do recv ops immediately when
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-- created. If later we want to send payloads or metadata, we'll need
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-- to tweak this.
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_clientRes <- runOps (unClientCall cc) (clientCQ c) clientEmptySendOps
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withServerCall s srm $ \sc ->
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f (c, s, cc, sc)
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serverConf :: ServerConfig
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serverConf = ServerConfig "localhost" 50051 [("/foo", Normal)] []
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clientConf :: ClientConfig
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clientConf = ClientConfig "localhost" 50051 []
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clientEmptySendOps :: [Op]
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clientEmptySendOps = [OpSendInitialMetadata mempty,
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OpSendMessage "",
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OpSendCloseFromClient]
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clientRecvOps :: [Op]
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clientRecvOps = [OpRecvInitialMetadata,
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OpRecvMessage,
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OpRecvStatusOnClient]
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serverEmptyRecvOps :: [Op]
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serverEmptyRecvOps = [OpSendInitialMetadata mempty,
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OpRecvMessage,
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OpRecvCloseOnServer]
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