/// <summary>
/// Monitor consumer availability and expansion
/// </summary>
/// <returns></returns>
public async Task MonitorConsumer()
{
foreach (var key in ConsumerPool.Keys)
{
IList <IRabbitConsumer> consumers = ConsumerPool[key];
//Check if you need to expand
//Check that more than half of the consumers vote to expand and expand
if ((consumers.Count / 2) <= consumers.Where(f => f.IsExpand()).Count())
{
IRabbitConsumer consumer = consumers.First();
if (consumers.Count < consumer.Options.MaxConsumerCount)
{
await this.Subscribe(consumer.Queue, consumer.Exchange);
}
}
//Check if the consumer is restarted
for (int i = 0; i < consumers.Count; i++)
{
IRabbitConsumer consumer = consumers[i];
if (await this.RestartConsumer(consumer))
{
//Remove old consumers
consumers.RemoveAt(i);
i--;
}
}
}
}
public RedditConsumer(
IRabbitPublisher rabbitPublisher,
IRabbitConsumer rabbitManager,
IStockTickerManager stockTickerManager,
IServiceConfigurations serviceConfigurations,
ISentimentAnalysis sentimentAnalysis)
{
_rabbitPublisher = rabbitPublisher;
_rabbitConsumer = rabbitManager;
_stockTickerManager = stockTickerManager;
_serviceConfigurations = serviceConfigurations;
_sentimentAnalysis = sentimentAnalysis;
}
public async Task <bool> RestartConsumer(IRabbitConsumer consumer)
{
try
{
if (consumer.IsAvailable())
{
await this.Subscribe(consumer.Queue, consumer.Exchange);
await consumer.Close();
return(true);
}
else
{
return(false);
}
}
catch (Exception ex)
{
this._logger.LogError(ex, $"Restart {consumer.Queue}&{consumer.Exchange}consumer failed");
return(false);
}
}