public async Task Run(
[ServiceBusTrigger("eventstream", Connection = "ServiceBusConnection")]
string myQueueItem,
Int32 deliveryCount,
DateTime enqueuedTimeUtc,
string messageId,
ILogger log)
{
logger = log;
log.LogInformation($"C# ServiceBus queue trigger function processed message: {myQueueItem}");
log.LogInformation($"EnqueuedTimeUtc={enqueuedTimeUtc}");
log.LogInformation($"DeliveryCount={deliveryCount}");
log.LogInformation($"MessageId={messageId}");
var @event = EventConvert.Deserialize(myQueueItem);
switch (@event)
{
case BankAccountCreatedEvent bankAccountCreatedEvent:
log.LogInformation("Received BankAccountCreatedEvent event on message bus.");
await HandleBankAccountCreatedEvent(bankAccountCreatedEvent);
break;
case DepositMadeEvent depositMadeEvent:
log.LogInformation("Received DepositMadeEvent event on message bus.");
await HandleDepositMadeEvent(depositMadeEvent);
break;
default:
log.LogInformation("Received unknown event type.");
break;
}
}
public async Task <List <Event> > GetEvents(Guid entityId)
{
var events = new List <Event>();
using (var setIterator = container.GetItemLinqQueryable <Event>()
.Where(@event => @event.AggregateRootId == entityId)
.OrderBy(@event => @event.Version)
.ToStreamIterator())
{
while (setIterator.HasMoreResults)
{
using ResponseMessage response = await setIterator.ReadNextAsync();
response.EnsureSuccessStatusCode();
using StreamReader sr = new StreamReader(response.Content);
using JsonTextReader jtr = new JsonTextReader(sr);
var jsonSerializer = new JsonSerializer();
var json = jsonSerializer.Deserialize <JObject>(jtr);
var array = (JArray)json.GetValue("Documents");
foreach (var item in array)
{
var @event = EventConvert.Deserialize(item.ToString());
events.Add(@event);
}
}
}
return(events);
}
public void Run([CosmosDBTrigger(
databaseName: "EventStore",
collectionName: "Events",
ConnectionStringSetting = "CosmosDBConnection",
LeaseCollectionName = "leases",
CreateLeaseCollectionIfNotExists = true)] IReadOnlyList <Document> documents,
ILogger log)
{
logger = log;
logger.LogInformation($"Documents modified: {documents.Count}");
foreach (var document in documents)
{
logger.LogInformation($"Processing document: {document}");
var @event = EventConvert.Deserialize(document.ToString());
eventBus.Publish(@event);
}
}
public void WhenEventIsABankAccountCreatedEvent_ThenJsonIsDeserializedSuccessfully()
{
var jsonEvent = "{"
+ "\"id\": \"00000000-0000-0000-0000-000000000001\","
+ "\"EntityId\": \"11111111-1111-1111-1111-111111111111\","
+ "\"AggregateRootId\": \"11111111-1111-1111-1111-111111111111\","
+ "\"Timestamp\": \"2020-01-01T01:02:59.457182Z\","
+ "\"Type\": \"BankAccountCreatedEvent\","
+ "\"Name\": \"John Doe\","
+ "\"Version\": 1"
+ "}";
var bankAccountCreatedEvent = EventConvert.Deserialize <BankAccountCreatedEvent>(jsonEvent);
bankAccountCreatedEvent.GetType().Should().Be(typeof(BankAccountCreatedEvent));
bankAccountCreatedEvent.Id.Should().Be(Guid.Parse("00000000-0000-0000-0000-000000000001"));
bankAccountCreatedEvent.AggregateRootId.Should().Be(Guid.Parse("11111111-1111-1111-1111-111111111111"));
bankAccountCreatedEvent.EntityId.Should().Be(Guid.Parse("11111111-1111-1111-1111-111111111111"));
bankAccountCreatedEvent.Timestamp.Should().Be(DateTime.Parse("2020-01-01T01:02:59.457182Z").ToUniversalTime());
bankAccountCreatedEvent.Type.Should().Be("BankAccountCreatedEvent");
bankAccountCreatedEvent.Name.Should().Be("John Doe");
bankAccountCreatedEvent.Version.Should().Be(1);
}
