protected void directSend( ClientSession clientsession, String topic, AbstractMessage.QOSType qos, ByteBuffer message, boolean retained, Integer messageID) { String clientId = clientsession.clientID; LOG.debug( "directSend invoked clientId <{}> on topic <{}> QoS {} retained {} messageID {}", clientId, topic, qos, retained, messageID); PublishMessage pubMessage = new PublishMessage(); pubMessage.setRetainFlag(retained); pubMessage.setTopicName(topic); pubMessage.setQos(qos); pubMessage.setPayload(message); LOG.info("send publish message to <{}> on topic <{}>", clientId, topic); if (LOG.isDebugEnabled()) { LOG.debug("content <{}>", DebugUtils.payload2Str(message)); } // set the PacketIdentifier only for QoS > 0 if (pubMessage.getQos() != AbstractMessage.QOSType.MOST_ONE) { pubMessage.setMessageID(messageID); } else { if (messageID != null) { throw new RuntimeException( "Internal bad error, trying to forwardPublish a QoS 0 message with PacketIdentifier: " + messageID); } } if (m_clientIDs == null) { throw new RuntimeException( "Internal bad error, found m_clientIDs to null while it should be initialized, somewhere it's overwritten!!"); } LOG.debug("clientIDs are {}", m_clientIDs); if (m_clientIDs.get(clientId) == null) { // TODO while we were publishing to the target client, that client disconnected, // could happen is not an error HANDLE IT throw new RuntimeException( String.format( "Can't find a ConnectionDescriptor for client <%s> in cache <%s>", clientId, m_clientIDs)); } ServerChannel session = m_clientIDs.get(clientId).session; LOG.debug("Session for clientId {} is {}", clientId, session); String user = (String) session.getAttribute(NettyChannel.ATTR_KEY_USERNAME); if (!m_authorizator.canRead(topic, user, clientId)) { LOG.debug("topic {} doesn't have read credentials", topic); return; } session.write(pubMessage); }