@Override public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception { try { ByteBuf buf = (ByteBuf) msg; MessageType msgType = MessageSerializer.deserializeHeader(buf); if (msgType == MessageType.REQUEST_RESULT) { long requestId = MessageSerializer.getRequestId(buf); RESP result = serializer.deserializeResponse(buf); callback.onRequestResult(requestId, result); } else if (msgType == MessageType.REQUEST_FAILURE) { RequestFailure failure = MessageSerializer.deserializeRequestFailure(buf); callback.onRequestFailure(failure.getRequestId(), failure.getCause()); } else if (msgType == MessageType.SERVER_FAILURE) { throw MessageSerializer.deserializeServerFailure(buf); } else { throw new IllegalStateException("Unexpected response type '" + msgType + "'"); } } catch (Throwable t1) { try { callback.onFailure(t1); } catch (Throwable t2) { LOG.error("Failed to notify callback about failure", t2); } } finally { ReferenceCountUtil.release(msg); } }
/** * Tests server failure serialization. */ @Test public void testServerFailureSerialization() throws Exception { IllegalStateException cause = new IllegalStateException("Expected test"); ByteBuf buf = MessageSerializer.serializeServerFailure(alloc, cause); int frameLength = buf.readInt(); assertEquals(MessageType.SERVER_FAILURE, MessageSerializer.deserializeHeader(buf)); Throwable request = MessageSerializer.deserializeServerFailure(buf); assertEquals(buf.readerIndex(), frameLength + 4); assertEquals(cause.getClass(), request.getClass()); assertEquals(cause.getMessage(), request.getMessage()); }
final MessageType msgType = MessageSerializer.deserializeHeader(buf);
/** * Tests request failure serialization. */ @Test public void testKvStateRequestFailureSerialization() throws Exception { long requestId = Integer.MAX_VALUE + 1111222L; IllegalStateException cause = new IllegalStateException("Expected test"); ByteBuf buf = MessageSerializer.serializeRequestFailure(alloc, requestId, cause); int frameLength = buf.readInt(); assertEquals(MessageType.REQUEST_FAILURE, MessageSerializer.deserializeHeader(buf)); RequestFailure requestFailure = MessageSerializer.deserializeRequestFailure(buf); assertEquals(buf.readerIndex(), frameLength + 4); assertEquals(requestId, requestFailure.getRequestId()); assertEquals(cause.getClass(), requestFailure.getCause().getClass()); assertEquals(cause.getMessage(), requestFailure.getCause().getMessage()); }
@Override public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception { ByteBuf buf = (ByteBuf) msg; assertEquals(MessageType.REQUEST, MessageSerializer.deserializeHeader(buf)); long requestId = MessageSerializer.getRequestId(buf); KvStateInternalRequest request = serializer.deserializeRequest(buf); buf.release(); KvStateResponse response = new KvStateResponse(serializedResult); ByteBuf serResponse = MessageSerializer.serializeResponse( ctx.alloc(), requestId, response); ctx.channel().writeAndFlush(serResponse); } });
/** * Tests that the channel is closed if an Exception reaches the channel handler. */ @Test public void testCloseChannelOnExceptionCaught() throws Exception { KvStateRegistry registry = new KvStateRegistry(); AtomicKvStateRequestStats stats = new AtomicKvStateRequestStats(); MessageSerializer<KvStateInternalRequest, KvStateResponse> serializer = new MessageSerializer<>(new KvStateInternalRequest.KvStateInternalRequestDeserializer(), new KvStateResponse.KvStateResponseDeserializer()); KvStateServerHandler handler = new KvStateServerHandler(testServer, registry, serializer, stats); EmbeddedChannel channel = new EmbeddedChannel(handler); channel.pipeline().fireExceptionCaught(new RuntimeException("Expected test Exception")); ByteBuf buf = (ByteBuf) readInboundBlocking(channel); buf.skipBytes(4); // skip frame length // Verify the response assertEquals(MessageType.SERVER_FAILURE, MessageSerializer.deserializeHeader(buf)); Throwable response = MessageSerializer.deserializeServerFailure(buf); assertTrue(response.getMessage().contains("Expected test Exception")); channel.closeFuture().await(READ_TIMEOUT_MILLIS); assertFalse(channel.isActive()); }
assertNotNull("Channel not active", ch); assertEquals(MessageType.REQUEST, MessageSerializer.deserializeHeader(buf)); long requestId = MessageSerializer.getRequestId(buf); KvStateInternalRequest deserRequest = serializer.deserializeRequest(buf);
assertEquals(MessageType.REQUEST_FAILURE, MessageSerializer.deserializeHeader(buf)); RequestFailure response = MessageSerializer.deserializeRequestFailure(buf);
assertEquals(MessageType.SERVER_FAILURE, MessageSerializer.deserializeHeader(buf)); Throwable response = MessageSerializer.deserializeServerFailure(buf); assertEquals(MessageType.SERVER_FAILURE, MessageSerializer.deserializeHeader(buf)); response = MessageSerializer.deserializeServerFailure(buf);
assertEquals(MessageType.REQUEST_RESULT, MessageSerializer.deserializeHeader(buf)); assertEquals(requestId, MessageSerializer.getRequestId(buf)); KvStateResponse response = server.getSerializer().deserializeResponse(buf);
/** * Tests response serialization with zero-length serialized result. */ @Test public void testResponseSerializationWithZeroLengthSerializedResult() throws Exception { byte[] serializedResult = new byte[0]; final KvStateResponse response = new KvStateResponse(serializedResult); final MessageSerializer<KvStateInternalRequest, KvStateResponse> serializer = new MessageSerializer<>(new KvStateInternalRequest.KvStateInternalRequestDeserializer(), new KvStateResponse.KvStateResponseDeserializer()); ByteBuf buf = MessageSerializer.serializeResponse(alloc, 72727278L, response); int frameLength = buf.readInt(); assertEquals(MessageType.REQUEST_RESULT, MessageSerializer.deserializeHeader(buf)); assertEquals(72727278L, MessageSerializer.getRequestId(buf)); KvStateResponse responseDeser = serializer.deserializeResponse(buf); assertEquals(buf.readerIndex(), frameLength + 4); assertArrayEquals(serializedResult, responseDeser.getContent()); }
/** * Tests response serialization. */ @Test public void testResponseSerialization() throws Exception { long requestId = Integer.MAX_VALUE + 72727278L; byte[] serializedResult = randomByteArray(1024); final KvStateResponse response = new KvStateResponse(serializedResult); final MessageSerializer<KvStateInternalRequest, KvStateResponse> serializer = new MessageSerializer<>(new KvStateInternalRequest.KvStateInternalRequestDeserializer(), new KvStateResponse.KvStateResponseDeserializer()); ByteBuf buf = MessageSerializer.serializeResponse(alloc, requestId, response); int frameLength = buf.readInt(); assertEquals(MessageType.REQUEST_RESULT, MessageSerializer.deserializeHeader(buf)); assertEquals(requestId, MessageSerializer.getRequestId(buf)); KvStateResponse responseDeser = serializer.deserializeResponse(buf); assertEquals(buf.readerIndex(), frameLength + 4); assertArrayEquals(serializedResult, responseDeser.getContent()); }
assertEquals(MessageType.REQUEST_FAILURE, MessageSerializer.deserializeHeader(buf)); RequestFailure response = MessageSerializer.deserializeRequestFailure(buf); assertEquals(182828L, response.getRequestId()); assertEquals(MessageType.REQUEST_FAILURE, MessageSerializer.deserializeHeader(buf)); response = MessageSerializer.deserializeRequestFailure(buf); assertEquals(182829L, response.getRequestId());
assertEquals(MessageType.REQUEST_FAILURE, MessageSerializer.deserializeHeader(buf)); RequestFailure response = MessageSerializer.deserializeRequestFailure(buf);
assertEquals(MessageType.REQUEST_RESULT, MessageSerializer.deserializeHeader(buf)); long deserRequestId = MessageSerializer.getRequestId(buf); KvStateResponse response = serializer.deserializeResponse(buf);
/** * Tests request serialization with zero-length serialized key and namespace. */ @Test public void testRequestSerializationWithZeroLengthKeyAndNamespace() throws Exception { long requestId = Integer.MAX_VALUE + 1337L; KvStateID kvStateId = new KvStateID(); byte[] serializedKeyAndNamespace = new byte[0]; final KvStateInternalRequest request = new KvStateInternalRequest(kvStateId, serializedKeyAndNamespace); final MessageSerializer<KvStateInternalRequest, KvStateResponse> serializer = new MessageSerializer<>(new KvStateInternalRequest.KvStateInternalRequestDeserializer(), new KvStateResponse.KvStateResponseDeserializer()); ByteBuf buf = MessageSerializer.serializeRequest(alloc, requestId, request); int frameLength = buf.readInt(); assertEquals(MessageType.REQUEST, MessageSerializer.deserializeHeader(buf)); assertEquals(requestId, MessageSerializer.getRequestId(buf)); KvStateInternalRequest requestDeser = serializer.deserializeRequest(buf); assertEquals(buf.readerIndex(), frameLength + 4); assertEquals(kvStateId, requestDeser.getKvStateId()); assertArrayEquals(serializedKeyAndNamespace, requestDeser.getSerializedKeyAndNamespace()); }
/** * Tests request serialization. */ @Test public void testRequestSerialization() throws Exception { long requestId = Integer.MAX_VALUE + 1337L; KvStateID kvStateId = new KvStateID(); byte[] serializedKeyAndNamespace = randomByteArray(1024); final KvStateInternalRequest request = new KvStateInternalRequest(kvStateId, serializedKeyAndNamespace); final MessageSerializer<KvStateInternalRequest, KvStateResponse> serializer = new MessageSerializer<>(new KvStateInternalRequest.KvStateInternalRequestDeserializer(), new KvStateResponse.KvStateResponseDeserializer()); ByteBuf buf = MessageSerializer.serializeRequest(alloc, requestId, request); int frameLength = buf.readInt(); assertEquals(MessageType.REQUEST, MessageSerializer.deserializeHeader(buf)); assertEquals(requestId, MessageSerializer.getRequestId(buf)); KvStateInternalRequest requestDeser = serializer.deserializeRequest(buf); assertEquals(buf.readerIndex(), frameLength + 4); assertEquals(kvStateId, requestDeser.getKvStateId()); assertArrayEquals(serializedKeyAndNamespace, requestDeser.getSerializedKeyAndNamespace()); }
/** * Tests the failure response with {@link UnknownKvStateIdException} as cause on * queries for unregistered KvStateIDs. */ @Test public void testQueryUnknownKvStateID() throws Exception { KvStateRegistry registry = new KvStateRegistry(); AtomicKvStateRequestStats stats = new AtomicKvStateRequestStats(); MessageSerializer<KvStateInternalRequest, KvStateResponse> serializer = new MessageSerializer<>(new KvStateInternalRequest.KvStateInternalRequestDeserializer(), new KvStateResponse.KvStateResponseDeserializer()); KvStateServerHandler handler = new KvStateServerHandler(testServer, registry, serializer, stats); EmbeddedChannel channel = new EmbeddedChannel(getFrameDecoder(), handler); long requestId = Integer.MAX_VALUE + 182828L; KvStateInternalRequest request = new KvStateInternalRequest(new KvStateID(), new byte[0]); ByteBuf serRequest = MessageSerializer.serializeRequest(channel.alloc(), requestId, request); // Write the request and wait for the response channel.writeInbound(serRequest); ByteBuf buf = (ByteBuf) readInboundBlocking(channel); buf.skipBytes(4); // skip frame length // Verify the response assertEquals(MessageType.REQUEST_FAILURE, MessageSerializer.deserializeHeader(buf)); RequestFailure response = MessageSerializer.deserializeRequestFailure(buf); assertEquals(requestId, response.getRequestId()); assertTrue("Did not respond with expected failure cause", response.getCause() instanceof UnknownKvStateIdException); assertEquals(1L, stats.getNumRequests()); assertEquals(1L, stats.getNumFailed()); }
assertEquals(MessageType.REQUEST_FAILURE, MessageSerializer.deserializeHeader(buf)); RequestFailure response = MessageSerializer.deserializeRequestFailure(buf);
@Override public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception { try { ByteBuf buf = (ByteBuf) msg; MessageType msgType = MessageSerializer.deserializeHeader(buf); if (msgType == MessageType.REQUEST_RESULT) { long requestId = MessageSerializer.getRequestId(buf); RESP result = serializer.deserializeResponse(buf); callback.onRequestResult(requestId, result); } else if (msgType == MessageType.REQUEST_FAILURE) { RequestFailure failure = MessageSerializer.deserializeRequestFailure(buf); callback.onRequestFailure(failure.getRequestId(), failure.getCause()); } else if (msgType == MessageType.SERVER_FAILURE) { throw MessageSerializer.deserializeServerFailure(buf); } else { throw new IllegalStateException("Unexpected response type '" + msgType + "'"); } } catch (Throwable t1) { try { callback.onFailure(t1); } catch (Throwable t2) { LOG.error("Failed to notify callback about failure", t2); } } finally { ReferenceCountUtil.release(msg); } }