public static async Task<WarmStorageCoordinator> CreateAsync(string hostName, Configuration configuration)
{
WarmStorageEventSource.Log.InitializingEventHubListener(configuration.EventHubName, configuration.ConsumerGroupName);
Func<string, IElasticSearchWriter> elasticSearchWriterFactory = partitionId =>
new ElasticSearchWriter.ElasticSearchWriter(
configuration.ElasticSearchUrl,
configuration.ElasticSearchIndexPrefix,
configuration.ElasticSearchIndexType,
configuration.RetryCount
);
var ns = NamespaceManager.CreateFromConnectionString(configuration.EventHubConnectionString);
try
{
await ns.GetConsumerGroupAsync(configuration.EventHubName, configuration.ConsumerGroupName);
}
catch (Exception e)
{
WarmStorageEventSource.Log.InvalidEventHubConsumerGroupName(e, configuration.EventHubName, configuration.ConsumerGroupName);
throw;
}
WarmStorageEventSource.Log.ConsumerGroupFound(configuration.EventHubName, configuration.ConsumerGroupName);
var eventHubId = ConfigurationHelper.GetEventHubName(ns.Address, configuration.EventHubName);
var buildingLookupService = new BuildingLookupService();
await buildingLookupService.InitializeAsync();
var factory = new WarmStorageEventProcessorFactory(elasticSearchWriterFactory, eventHubId, buildingLookupService);
var options = new EventProcessorOptions()
{
MaxBatchSize = configuration.MaxBatchSize,
PrefetchCount = configuration.PreFetchCount,
ReceiveTimeOut = configuration.ReceiveTimeout
};
options.ExceptionReceived +=
(s, e) => WarmStorageEventSource.Log.ErrorProcessingMessage(e.Exception, e.Action);
var host = new EventProcessorHost(
hostName,
consumerGroupName: configuration.ConsumerGroupName,
eventHubPath: configuration.EventHubName,
eventHubConnectionString: configuration.EventHubConnectionString,
storageConnectionString: configuration.CheckpointStorageAccount);
await host.RegisterEventProcessorFactoryAsync(factory, options);
return new WarmStorageCoordinator(host);
}
public BuildingLookupService()
{
_configuration = Configuration.GetCurrentConfiguration();
}