public async Task SC01_CreateStreamAsync()
{
IEventStore eventStore =
new CosmosEventStore(this, EndpointUrl, AuthorizationKey, DatabaseId, _eventsContainerId);
var meterRegistered = new MeterRegistered
{
MeterId = "87000001",
PostalCode = "1000 AA",
HouseNumber = "25",
ActivationCode = "542-484"
};
var meterActivated = new MeterActivated();
// 1. Add a new stream.
var streamId = $"meter:{meterRegistered.MeterId}";
var succes = await eventStore.AppendToStreamAsync(
streamId,
0,
new IEvent[] { meterRegistered, meterActivated });
Assert.IsTrue(succes, "Unexpected stream version encountered.");
}
private async Task AppendReadingsCollectedEvents(string streamId, DateTime fromDate, int dayCount)
{
IEventStore eventStore = new CosmosEventStore(this, EndpointUrl, AuthorizationKey, DatabaseId);
var stream = await eventStore.LoadStreamAsync(streamId);
// Only append more ReadingsCollected events if we haven't done this before.
// This can be detected by looking at the stream version.
var events = Enumerable.Range(0, dayCount - 1)
.Select(i => new MeterReadingsCollected
{
Date = fromDate.AddDays(i),
Readings = GenerateMeterReadings(fromDate.AddDays(i)).ToArray()
})
.ToList();
await eventStore.AppendToStreamAsync(streamId, stream.Version, events);
// Wait a little while before adding the last one.
// This ensures that the last event will be at a different timestamp
// which is better for explaining the mechanism.
await Task.Delay(TimeSpan.FromSeconds(2));
await eventStore.AppendToStreamAsync(streamId, stream.Version + events.Count, new IEvent[]
{
new MeterReadingsCollected
{
Date = fromDate.AddDays(dayCount - 1),
Readings = GenerateMeterReadings(fromDate.AddDays(dayCount - 1)).ToArray()
}
});
}
private static async Task WriteVolumeCosmos(IConfigurationRoot config)
{
string connectionstring = config.GetConnectionString("CosmosConnectionString");
var eventStore = CosmosEventStore.GetInstance(connectionstring, "corvuseventstore", "corvusevents", NullSnapshotReader.Instance);
await ExecuteVolume(eventStore).ConfigureAwait(false);
}
private CosmosEventStore GetValidationFailureEventStore()
{
var eventStore =
new CosmosEventStore(_eventTypeResolver, _endpointUrl, _authorizationKey, _databaseId,
_validationFailureContainerId);
return(eventStore);
}
private CosmosEventStore GetMigratedEventStore()
{
var eventStore =
new CosmosEventStore(_eventTypeResolver, _endpointUrl, _authorizationKey, _databaseId,
_migratedEventContainerId);
return(eventStore);
}
#pragma warning disable IDE0051 // Remove unused private members
#pragma warning disable RCS1213 // Remove unused member declaration.
private static async Task SimpleCosmos(IConfigurationRoot config)
{
Console.WriteLine("Running with Cosmos in Azure");
string connectionstring = config.GetConnectionString("CosmosConnectionString");
var eventStore = CosmosEventStore.GetInstance(connectionstring, "corvuseventstore", "corvusevents", NullSnapshotReader.Instance);
await ExecuteSimple(eventStore).ConfigureAwait(false);
Console.WriteLine("Finished running with Cosmos in Azure");
}
public async Task SC06A_SaveSnapshotAsync()
{
IEventStore eventStore = new CosmosEventStore(this, EndpointUrl, AuthorizationKey, DatabaseId);
ISnapshotStore snapshotStore = new CosmosSnapshotStore(EndpointUrl, AuthorizationKey, DatabaseId);
// Request parameters.
var meterId = "87000001";
// Load domain object.
var repository = new MeterRepository(eventStore);
var meter = await repository.LoadMeterAsync(meterId);
var snapshot = meter.GetSnapshot();
await snapshotStore.SaveSnapshotAsync($"meter:{meterId}", meter.Version, snapshot);
}
public async Task SC06C_LoadSnapshotAsync()
{
IEventStore eventStore = new CosmosEventStore(this, EndpointUrl, AuthorizationKey, DatabaseId);
ISnapshotStore snapshotStore = new CosmosSnapshotStore(EndpointUrl, AuthorizationKey, DatabaseId);
var repository = new MeterRepositorySnapshotDecorator(
eventStore,
snapshotStore,
new MeterRepository(eventStore));
// Request parameters.
var meterId = "87000001";
// Load domain object.
var meter = await repository.LoadMeterAsync(meterId);
Assert.AreEqual(20, meter.Version);
}
public async Task SC03_DomainAddAsync()
{
IEventStore eventStore = new CosmosEventStore(this, EndpointUrl, AuthorizationKey, DatabaseId);
// Request parameters.
var meterId = "87000002";
var postalCode = "9999 BB";
var houseNumber = "4";
var activationCode = "745-195";
// New domain object.
var meter = new Meter(meterId, postalCode, houseNumber, activationCode);
var repository = new MeterRepository(eventStore);
var succes = await repository.SaveMeterAsync(meter);
Assert.IsTrue(succes, "Unexpected stream version encountered.");
}
public override void Build()
{
var builder = this as ISettingsBuilder;
ICosmosEventStoreSettings settings = this as ICosmosEventStoreSettings;
Uri queryUri = UriFactory.CreateDocumentCollectionUri(settings.DatabaseName, settings.CollectionName);
if (settings.WithNewStorageIfNotExists)
{
settings.DocumentClient.CreateDatabaseIfNotExistsAsync(new Database {
Id = settings.DatabaseName
}).Wait();
CreateAggregateCollection(settings.DocumentClient, settings.DatabaseName, settings.CollectionName, settings.Throughput);
}
var eventStore = new CosmosEventStore(settings.DocumentClient, queryUri, builder.Container.Resolve <ISerializer>());
builder.Container.RegisterSingleton <IEventStore>(() => eventStore, builder.Name);
}
public async Task SC04_DomainUpdateAsync()
{
IEventStore eventStore = new CosmosEventStore(this, EndpointUrl, AuthorizationKey, DatabaseId);
// Request parameters.
var meterId = "87000002";
var activationCode = "745-195";
// Load domain object.
var repository = new MeterRepository(eventStore);
var meter = await repository.LoadMeterAsync(meterId);
// Call business logic on domain object.
meter.Activate(activationCode);
var succes = await repository.SaveMeterAsync(meter);
Assert.IsTrue(succes, "Unexpected stream version encountered.");
}
public async Task SC02_AppendToExistingStreamAsync()
{
IEventStore eventStore = new CosmosEventStore(this, EndpointUrl, AuthorizationKey, DatabaseId);
var streamId = $"meter:87000001";
var stream = await eventStore.LoadStreamAsync(streamId);
var readingsCollected = new MeterReadingsCollected
{
Date = new DateTime(2020, 4, 30),
Readings = GenerateMeterReadings(new DateTime(2020, 4, 30)).ToArray()
};
var succes = await eventStore.AppendToStreamAsync(
streamId,
stream.Version,
new IEvent[] { readingsCollected });
Assert.IsTrue(succes, "Unexpected stream version encountered.");
}