ivankelly commented on a change in pull request #1996: Cpp client: add multiTopicsConsumer URL: https://github.com/apache/incubator-pulsar/pull/1996#discussion_r197725546
########## File path: pulsar-client-cpp/lib/MultiTopicsConsumerImpl.cc ########## @@ -0,0 +1,621 @@ +/** + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + */ +#include "MultiTopicsConsumerImpl.h" + +DECLARE_LOG_OBJECT() + +using namespace pulsar; + +MultiTopicsConsumerImpl::MultiTopicsConsumerImpl(ClientImplPtr client, const std::vector<std::string>& topics, + const std::string& subscriptionName, TopicNamePtr topicName, + const ConsumerConfiguration& conf, + const LookupServicePtr lookupServicePtr) + : client_(client), + subscriptionName_(subscriptionName), + topic_(topicName ? topicName->toString() : "EmptyTopics"), + conf_(conf), + state_(Pending), + messages_(1000), + listenerExecutor_(client->getListenerExecutorProvider()->get()), + messageListener_(conf.getMessageListener()), + namespaceName_(topicName ? topicName->getNamespaceName() : boost::shared_ptr<NamespaceName>()), + lookupServicePtr_(lookupServicePtr), + allTopicPartitionsNumber_(boost::make_shared<std::atomic<int>>(0)), + topics_(topics) { + std::stringstream consumerStrStream; + consumerStrStream << "[Muti Topics Consumer: " + << "TopicName - " << topic_ << " - Subscription - " << subscriptionName << "]"; + consumerStr_ = consumerStrStream.str(); + + if (conf.getUnAckedMessagesTimeoutMs() != 0) { + unAckedMessageTrackerPtr_.reset( + new UnAckedMessageTrackerEnabled(conf.getUnAckedMessagesTimeoutMs(), client, *this)); + } else { + unAckedMessageTrackerPtr_.reset(new UnAckedMessageTrackerDisabled()); + } +} + +void MultiTopicsConsumerImpl::start() { + if (topics_.empty()) { + setState(Ready); + LOG_DEBUG("No topics passed in when create MultiTopicsConsumer."); + multiTopicsConsumerCreatedPromise_.setValue(shared_from_this()); + return; + } + + // start call subscribeOneTopicAsync for each single topic + int topicsNumber = topics_.size(); + boost::shared_ptr<std::atomic<int>> topicsNeedCreate = boost::make_shared<std::atomic<int>>(topicsNumber); + // subscribe for each passed in topic + for (std::vector<std::string>::const_iterator itr = topics_.begin(); itr != topics_.end(); itr++) { + subscribeOneTopicAsync(*itr).addListener( + boost::bind(&MultiTopicsConsumerImpl::handleOneTopicSubscribed, shared_from_this(), _1, _2, *itr, + topicsNeedCreate)); + } +} + +void MultiTopicsConsumerImpl::handleOneTopicSubscribed(Result result, Consumer consumer, + const std::string& topic, + boost::shared_ptr<std::atomic<int>> topicsNeedCreate) { + int previous = topicsNeedCreate->fetch_sub(1); + assert(previous > 0); + + if (result != ResultOk) { + state_ = Failed; Review comment: should use setState here. ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected] With regards, Apache Git Services
