pingww commented on code in PR #131: URL: https://github.com/apache/rocketmq-mqtt/pull/131#discussion_r990577787
########## mqtt-cs/src/main/java/org/apache/rocketmq/mqtt/cs/protocol/mqtt/handler/MqttSubscribeHandler.java: ########## @@ -128,4 +159,63 @@ private MqttSubAckMessage getResponse(MqttSubscribeMessage mqttSubscribeMessage) return mqttSubAckMessage; } + + private void sendRetainMessage(ChannelHandlerContext ctx, Set<Subscription> subscriptions) throws InterruptedException, RemotingException, org.apache.rocketmq.remoting.exception.RemotingException { + + String clientId = ChannelInfo.getClientId(ctx.channel()); + Session session = sessionLoop.getSession(ChannelInfo.getId(ctx.channel())); + Set<Subscription> preciseTopics = new HashSet<>(); + Set<Subscription> wildcardTopics = new HashSet<>(); + + for (Subscription subscription : subscriptions) { + if (!TopicUtils.isWildCard(subscription.getTopicFilter())) { + preciseTopics.add(subscription); + } else { + wildcardTopics.add(subscription); + } + } + + for (Subscription subscription : preciseTopics) { + CompletableFuture<Message> retainedMessage = retainedPersistManager.getRetainedMessage(subscription.getTopicFilter()); + retainedMessage.whenComplete((msg, throwable) -> { + if (msg == null) { + return; + } + _sendMessage(session, clientId, subscription, msg); + }); + } + + for (Subscription subscription : wildcardTopics) { + + CompletableFuture<ArrayList<Message>> future = retainedPersistManager.getMsgsFromTrie(subscription); + future.whenComplete((msgsList, throwable) -> { + for (Message msg : msgsList) { + if (msg == null) { + return; + } + _sendMessage(session, clientId, subscription, msg); + } + }); + + } + } + + private void _sendMessage(Session session, String clientId, Subscription subscription, Message message) { + + String payLoad = new String(message.getPayload()); + if (payLoad.equals(MessageUtil.EMPTYSTRING) && message.isEmpty()) { + return; + } + + int mqttId = mqttMsgId.nextId(clientId); + int qos = min(subscription.getQos(), message.qos()); + if (qos == 0) { + pushAction.write(session, message, mqttId, 0, subscription); + pushAction.rollNextByAck(session, mqttId); + } else { + retryDriver.mountPublish(mqttId, message, subscription.getQos(), ChannelInfo.getId(session.getChannel()), subscription); Review Comment: That is, the retain message is not in the normal queue, which may affect the retry logic -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: dev-unsubscr...@rocketmq.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org