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https://github.com/unclechu/gRPC-haskell.git
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103 lines
3.1 KiB
Haskell
103 lines
3.1 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
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import Control.Exception
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import Control.Monad
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import Data.ByteString (ByteString)
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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.Op
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import Network.GRPC.LowLevel.Server
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import Test.Tasty
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import Test.Tasty.HUnit as HU (testCase, (@?=))
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lowLevelOpTests :: TestTree
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lowLevelOpTests =
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testGroup
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"Synchronous unit tests of low-level Op interface"
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[testCancelFromServer]
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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 unsafeCC 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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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
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Left x -> error $ show x
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Right () -> return ()
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withClientServerUnaryCall ::
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GRPC ->
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( ( Client,
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Server,
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ClientCall,
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ServerCall ByteString
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) ->
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IO (Either GRPCIOError a)
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) ->
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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 <- clientRegisterMethodNormal c "/foo"
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withServer grpc serverConf $ \s -> do
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ccVar <- newEmptyMVar
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bracket newEmptyMVar (\v -> putMVar v ()) $ \finished -> do
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_ <- forkIO $
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void $
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withClientCall c crm 10 $ \cc -> do
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putMVar ccVar cc
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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 (unsafeCC cc) (clientCQ c) clientEmptySendOps
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takeMVar finished
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pure (Right ())
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let srm = head (normalMethods s)
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cc <- takeMVar ccVar
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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")] [] [] [] [] Nothing
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clientConf :: ClientConfig
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clientConf = ClientConfig "localhost" 50051 [] Nothing Nothing
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clientEmptySendOps :: [Op]
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clientEmptySendOps =
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[ OpSendInitialMetadata mempty,
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OpSendMessage "",
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OpSendCloseFromClient
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]
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clientRecvOps :: [Op]
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clientRecvOps =
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[ OpRecvInitialMetadata,
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OpRecvMessage,
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OpRecvStatusOnClient
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]
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serverEmptyRecvOps :: [Op]
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serverEmptyRecvOps =
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[ OpSendInitialMetadata mempty,
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OpRecvMessage,
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OpRecvCloseOnServer
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]
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