/// <summary>
/// Checks if a topic by the provided <paramref name="topicName"/> exists and
/// Checks if a subscription name by the provided <paramref name="subscriptionName"/> exists.
/// </summary>
protected virtual void CheckTopicExists(Manager manager, string topicName, string subscriptionName)
{
// Configure Queue Settings
var eventTopicDescription = new TopicDescription(topicName)
{
#if NET452
MaxSizeInMegabytes = 5120,
#endif
#if NETSTANDARD2_0
MaxSizeInMB = 5120,
#endif
DefaultMessageTimeToLive = new TimeSpan(0, 25, 0),
EnablePartitioning = true,
EnableBatchedOperations = true,
};
#if NETSTANDARD2_0
Task <bool> checkTask = manager.TopicExistsAsync(topicName);
checkTask.Wait(1500);
if (!checkTask.Result)
{
Task <TopicDescription> createTopicTask = manager.CreateTopicAsync(eventTopicDescription);
createTopicTask.Wait(1500);
}
checkTask = manager.SubscriptionExistsAsync(topicName, subscriptionName);
checkTask.Wait(1500);
if (!checkTask.Result)
{
var subscriptionDescription = new SubscriptionDescription(topicName, subscriptionName)
{
DefaultMessageTimeToLive = eventTopicDescription.DefaultMessageTimeToLive,
EnableBatchedOperations = eventTopicDescription.EnableBatchedOperations,
};
Task <SubscriptionDescription> createTask = manager.CreateSubscriptionAsync(subscriptionDescription);
createTask.Wait(1500);
}
#endif
#if NET452
// Create the topic if it does not exist already
if (!manager.TopicExists(eventTopicDescription.Path))
{
manager.CreateTopic(eventTopicDescription);
}
if (!manager.SubscriptionExists(eventTopicDescription.Path, subscriptionName))
{
manager.CreateSubscription
(
new SubscriptionDescription(eventTopicDescription.Path, subscriptionName)
{
DefaultMessageTimeToLive = new TimeSpan(0, 25, 0),
EnableBatchedOperations = true,
EnableDeadLetteringOnFilterEvaluationExceptions = true
}
);
}
#endif
}
/// <summary>
/// Checks if a event hub by the provided <paramref name="hubName"/> exists and
/// Checks if a consumer group by the provided <paramref name="consumerGroupNames"/> exists.
/// </summary>
protected virtual void CheckHubExists(Manager manager, string hubName, string consumerGroupNames)
{
#if NET452
// Configure Queue Settings
var eventHubDescription = new EventHubDescription(hubName)
{
MessageRetentionInDays = long.MaxValue,
};
// Create the topic if it does not exist already
manager.CreateEventHubIfNotExists(eventHubDescription);
var subscriptionDescription = new SubscriptionDescription(eventHubDescription.Path, consumerGroupNames);
if (!manager.SubscriptionExists(eventHubDescription.Path, consumerGroupNames))
{
manager.CreateSubscription(subscriptionDescription);
}
#endif
#if NETSTANDARD2_0
/*
* // Configure Queue Settings
* var eventHubDescription = new EventHubDescription(hubName)
* {
* MessageRetentionInDays = long.MaxValue,
* };
*
* // Create the topic if it does not exist already
* manager.CreateEventHubIfNotExists(eventHubDescription);
*
* Task<bool> checkTask = manager.SubscriptionExistsAsync(eventHubDescription.Path, consumerGroupNames);
* checkTask.Wait(1500);
* if (!checkTask.Result)
* manager.CreateSubscriptionAsync(subscriptionDescription).Wait(1500);
*/
Logger.LogWarning($"Checking EventHubs and subscriptions is not currently implemented until the Azure libraries provide management facilities. You will need to check these objects exist manually: EventHub {hubName}, Subscription/Consumer Group {consumerGroupNames}", "AzureEventHub");
#endif
}
