Examples with RequestFailure org.apache.flink.queryablestate.network.messages.RequestFailure used on opensource projects

Example 6 with RequestFailure

use of org.apache.flink.queryablestate.network.messages.RequestFailure in project flink by apache.

the class KvStateServerHandlerTest method testQueryUnknownKvStateID.

/**
 * 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);
    // skip frame length
    buf.skipBytes(4);
    // Verify the response
    assertEquals(MessageType.REQUEST_FAILURE, MessageSerializer.deserializeHeader(buf));
    RequestFailure response = MessageSerializer.deserializeRequestFailure(buf);
    buf.release();
    assertEquals(requestId, response.getRequestId());
    assertTrue("Did not respond with expected failure cause", response.getCause() instanceof UnknownKvStateIdException);
    assertEquals(1L, stats.getNumRequests());
    assertEquals(1L, stats.getNumFailed());
}

Example 7 with RequestFailure

use of org.apache.flink.queryablestate.network.messages.RequestFailure in project flink by apache.

the class ClientHandler method channelRead.

@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);
    }
}