@Override public void handleUpstream(final ChannelHandlerContext ctx, final ChannelEvent e) throws Exception { final MappingHttpRequest request = MappingHttpMessage.extractMessage(e); final BaseMessage msg = BaseMessage.extractMessage(e); if (msg != null) { try { final Class<? extends ComponentId> compClass = ComponentMessages.lookup(msg); ComponentId compId = ComponentIds.lookup(compClass); if (compId.isAlwaysLocal() || Topology.isEnabledLocally(compClass)) { ctx.sendUpstream(e); } else { Handlers.sendRedirect(ctx, e, compClass, request); } } catch (final NoSuchElementException ex) { LOG.warn( "Failed to find reverse component mapping for message type: " + msg.getClass()); ctx.sendUpstream(e); } catch (final Exception ex) { Logs.extreme().error(ex, ex); ctx.sendUpstream(e); } } else { ctx.sendUpstream(e); } }