public static IServiceCollection AddAzureEventBus(this IServiceCollection services)
{
var serviceProvider = services.BuildServiceProvider();
var configuration = serviceProvider.GetRequiredService <IConfiguration>();
const string connStrEnvVarName = "ESZOP_AZURE_EVENTBUS_CONN_STR";
const string topicNameVarName = "ESZOP_AZURE_EVENTBUS_TOPIC_NAME";
const string subNameVarName = "ESZOP_AZURE_EVENTBUS_SUB_NAME";
var connStr = EnvironmentHelpers.GetRequiredEnvVariable(connStrEnvVarName);
var topicName = configuration.GetRequiredConfigValue(topicNameVarName, "EventBus:AzureEventBus:TopicName");
var subName = configuration.GetRequiredConfigValue(subNameVarName, "EventBus:AzureEventBus:SubscriptionName");
services.Configure <AzureEventBusConfig>(config =>
{
config.ConnectionString = connStr;
config.TopicName = topicName;
config.SubscriptionName = subName;
});
services.AddSingleton <IEventBus, AzureEventBus>();
return(services);
}