/// <summary>
/// Processes an Event and Queues Messages to Subscribers
/// </summary>
/// <param name="Topic"></param>
/// <param name="Event"></param>
/// <param name="EventData"></param>
/// <returns></returns>
public async Task ProcessEvent(string Topic, string EventData)
{
logger.LogDebug($"Processing ({Topic})");
var topics = await metadataStore.GetTopicsAsync();
if (!topics.Contains(Topic, StringComparer.OrdinalIgnoreCase))
{
logger.LogWarning($"Not a valid topic");
return;
}
var subscriptionDetails = await subscriberStore.GetSubscriptionsToTopic(Topic);
if (subscriptionDetails == null || subscriptionDetails.Count() == 0)
{
logger.LogWarning($"No Subscribers");
return;
}
// Create Messages to Notify all Subscribers
foreach (var subscriptionDetail in subscriptionDetails)
{
await subscriberQueueStore.EnqueueMessageAsync(new SubscriberMessage
{
DestinationUri = new Uri(subscriptionDetail.BaseUri, subscriptionDetail.RelativePath),
SubscriberId = subscriptionDetail.SubscriberId,
JsonBody = EventData
});
}
}
/// <summary>
/// Processes an Update to an Object and Notifies any Subscribers of the Update
/// </summary>
/// <param name="ObjectType"></param>
/// <param name="ObjectId"></param>
/// <param name="jsonObject"></param>
/// <returns></returns>
public async Task UpdateObject(string ObjectType, string ObjectId, string jsonObject)
{
logger.LogDebug($"Processing ({ObjectType},{ObjectId})");
// Check for valid Metadata Type
var objectTypes = await metadataStore.GetObjectTypesAsync();
if (!objectTypes.Any(ot => ot.Equals(ObjectType, StringComparison.OrdinalIgnoreCase)))
{
logger.LogWarning($"Not a valid ObjectType");
return;
}
// Update the Object
var existingObject = await objectStore.GetObjectAsync(ObjectType, ObjectId);
var storedObject = EventStoreSerialization.DeSerializeObject(existingObject ?? "{}");
var updatedObject = EventStoreSerialization.DeSerializeObject(jsonObject);
storedObject["_id"] = ObjectId;
foreach (var update in updatedObject)
{
storedObject[update.Key] = update.Value;
}
var newJson = EventStoreSerialization.SerializeObject(storedObject);
await objectStore.SetObjectAsync(ObjectType, ObjectId, newJson);
// Check for Subscribers
var subscriptionDetails = await subscriberStore.GetSubscriptionsToObjectType(ObjectType);
if (subscriptionDetails == null || subscriptionDetails.Count() == 0)
{
logger.LogWarning($"No Subscribers");
return;
}
// Create Messages to Notify all Subscribers
foreach (var subscriptionDetail in subscriptionDetails)
{
await subscriberQueueStore.EnqueueMessageAsync(new SubscriberMessage
{
DestinationUri = new Uri(subscriptionDetail.BaseUri, subscriptionDetail.RelativePath),
SubscriberId = subscriptionDetail.SubscriberId,
JsonBody = newJson
});
}
}
