public async Task SubscribeAsync <T>(Func <T, Task <bool> > handler, SubscribeOptions subscribeOptions = null, CancellationToken cancellationToken = default) where T : class
{
InitProcess();
string topic = GetTopic(typeof(T));
var groupId = subscribeOptions?.GroupId;
groupId = !string.IsNullOrEmpty(groupId) ? groupId : RedisMessageBusOptions.DefaultGroupName;
ValidateSubscribe(topic, groupId);
_logger.LogInformation($"RedisMessageBus订阅Topic:{topic},GroupId:{groupId}");
var groupPosition = !string.IsNullOrEmpty(subscribeOptions?.GroupPosition) ? subscribeOptions.GroupPosition : "$"; //0-0 $
await _redisStorage.CreateConsumerGroupIfNotExist(topic, groupId, groupPosition); //StreamPosition.NewMessages
#pragma warning disable CS4014
Task.Run(async() =>
{
Func <JobData, Task <bool> > action = async message =>
{
var realObj = _options.Serializer.Deserialize <T>(message.Data);
return(await handler(realObj));
};
//先处理当前消费者组中的pel数据 上次重启没有执行完成的 一台机器一个consumerName
var consumerName = GetConsumerName();
var process = new WorkerProcess(_serviceProvider, topic, groupId, consumerName);
process.OnMessage += action;
await process.ProcessPel(_backgroundProcessContext);//目前用同一个消费者名称，所以只处理第一个pel就行了
await _processExecuter.AddProcess(process, $"RedisMessageBus即时任务开始执行：{topic}......");
_backgroundProcessContext.SubscriberTopics.Add(new SubscriberTopicInfo {
Topic = topic, GroupName = groupId
}); //便于ErrorProcess处理
});
#pragma warning restore CS4014
}
