/** 发消息时,如果Topic不存在,尝试创建 */ public TopicConfig createTopicInSendMessageMethod( final String topic, final String defaultTopic, final String remoteAddress, final int clientDefaultTopicQueueNums) { TopicConfig topicConfig = null; boolean createNew = false; try { if (this.lockTopicConfigTable.tryLock(LockTimeoutMillis, TimeUnit.MILLISECONDS)) { try { topicConfig = this.topicConfigTable.get(topic); if (topicConfig != null) return topicConfig; TopicConfig defaultTopicConfig = this.topicConfigTable.get(defaultTopic); if (defaultTopicConfig != null) { if (PermName.isInherited(defaultTopicConfig.getPerm())) { topicConfig = new TopicConfig(topic); int queueNums = clientDefaultTopicQueueNums > defaultTopicConfig.getWriteQueueNums() ? defaultTopicConfig.getWriteQueueNums() : clientDefaultTopicQueueNums; if (queueNums < 0) { queueNums = 0; } topicConfig.setReadQueueNums(queueNums); topicConfig.setWriteQueueNums(queueNums); int perm = defaultTopicConfig.getPerm(); perm &= ~PermName.PERM_INHERIT; topicConfig.setPerm(perm); topicConfig.setTopicFilterType(defaultTopicConfig.getTopicFilterType()); } else { log.warn( "create new topic failed, because the default topic[" + defaultTopic + "] no perm, " + defaultTopicConfig.getPerm() + " producer: " + remoteAddress); } } else { log.warn( "create new topic failed, because the default topic[" + defaultTopic + "] not exist." + " producer: " + remoteAddress); } if (topicConfig != null) { log.info( "create new topic by default topic[" + defaultTopic + "], " + topicConfig + " producer: " + remoteAddress); this.topicConfigTable.put(topic, topicConfig); createNew = true; this.persist(); } } finally { this.lockTopicConfigTable.unlock(); } } } catch (InterruptedException e) { log.error("createTopicInSendMessageMethod exception", e); } if (createNew) { this.brokerController.registerBrokerAll(); } return topicConfig; }