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Expose GRPC_ARG_MAX_RECEIVE_MESSAGE_LENGTH
channel arg (#35)
* Expose the max receive message length channel argument + unittest * Remove unused `MultiWayIf` ext
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4 changed files with 49 additions and 4 deletions
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@ -438,6 +438,8 @@ char* translate_arg_key(enum supported_arg_key key){
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return GRPC_ARG_PRIMARY_USER_AGENT_STRING;
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case user_agent_suffix_key:
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return GRPC_ARG_SECONDARY_USER_AGENT_STRING;
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case max_receive_message_length_key:
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return GRPC_ARG_MAX_RECEIVE_MESSAGE_LENGTH;
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default:
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return "unknown_arg_key";
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}
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@ -154,7 +154,8 @@ enum supported_arg_key {
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compression_algorithm_key = 0,
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compression_level_key,
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user_agent_prefix_key,
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user_agent_suffix_key
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user_agent_suffix_key,
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max_receive_message_length_key,
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};
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grpc_arg* create_arg_array(size_t n);
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@ -6,6 +6,7 @@ import Control.Exception
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import Control.Monad
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import Foreign.Marshal.Alloc (malloc, free)
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import Foreign.Storable
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import Numeric.Natural
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#include <grpc/grpc.h>
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#include <grpc/status.h>
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@ -47,9 +48,10 @@ data ArgValue = StringArg String | IntArg Int
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-- | Supported arguments for a channel. More cases will be added as we figure
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-- out what they are.
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data Arg = CompressionAlgArg CompressionAlgorithm
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| CompressionLevelArg CompressionLevel
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| UserAgentPrefix String
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| UserAgentSuffix String
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| CompressionLevelArg CompressionLevel
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| UserAgentPrefix String
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| UserAgentSuffix String
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| MaxReceiveMessageLength Natural
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deriving (Show, Eq)
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{#fun create_string_arg as ^ {`GrpcArg', `Int', `ArgKey', `String'} -> `()'#}
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@ -67,6 +69,9 @@ createArg array (UserAgentPrefix prefix) i =
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createStringArg array i UserAgentPrefixKey prefix
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createArg array (UserAgentSuffix suffix) i =
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createStringArg array i UserAgentSuffixKey suffix
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createArg array (MaxReceiveMessageLength n) i =
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createIntArg array i MaxReceiveMessageLengthKey $
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fromIntegral (min n (fromIntegral (maxBound :: Int)))
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createChannelArgs :: [Arg] -> IO GrpcChannelArgs
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createChannelArgs args = do
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@ -57,6 +57,7 @@ lowLevelTests = testGroup "Unit tests of low-level Haskell library"
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, testCustomUserAgent
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, testClientCompression
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, testClientServerCompression
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, testClientMaxReceiveMessageLengthChannelArg
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, testClientStreaming
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, testClientStreamingUnregistered
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, testServerStreaming
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@ -766,6 +767,42 @@ testClientServerCompressionLvl =
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return ("hello", dummyMeta, StatusOk, StatusDetails "")
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return ()
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testClientMaxReceiveMessageLengthChannelArg :: TestTree
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testClientMaxReceiveMessageLengthChannelArg = do
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testGroup "max receive message length channel arg (client channel)"
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[ csTest' "payload size < small bound succeeds" shouldSucceed server
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, csTest' "payload size > small bound fails" shouldFail server
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]
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where
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-- The server always sends a 4-byte payload
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pay = "four"
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server = TestServer (ServerConfig "localhost" 50051 ["/foo"] [] [] [] [] Nothing) $ \s -> do
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let rm = head (normalMethods s)
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void $ serverHandleNormalCall s rm mempty $ \sc -> do
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payload sc @?= pay
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pure (pay, mempty, StatusOk, StatusDetails "")
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clientMax n k = TestClient conf $ \c -> do
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rm <- clientRegisterMethodNormal c "/foo"
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clientRequest c rm 1 pay mempty >>= k
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where
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conf = ClientConfig "localhost" 50051 [MaxReceiveMessageLength n] Nothing
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-- Expect success when the max recv payload size is set to 4 bytes, and we
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-- are sent 4.
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shouldSucceed = clientMax 4 $ checkReqRslt $ \NormalRequestResult{..} -> do
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rspCode @?= StatusOk
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rspBody @?= pay
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details @?= ""
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-- Expect failure when the max recv payload size is set to 3 bytes, and we
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-- are sent 4.
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shouldFail = clientMax 3 $ \case
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Left (GRPCIOBadStatusCode StatusInvalidArgument _)
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-> pure ()
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rsp
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-> clientFail ("Expected failure response, but got: " ++ show rsp)
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--------------------------------------------------------------------------------
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-- Utilities and helpers
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