public static void AddPostgresAperture(
this IServiceCollection services,
PullEventStream.Config config = default,
Func <ApertureAgent, ApertureAgent> configure = null)
{
services.AddScoped <PostgresOffsetTracker>();
services.AddScoped <IStreamEvents>(
ctx => new PullEventStream(
ctx.GetService <IPullEventStreamEventStore>(), config));
var agent = ApertureAgentBuilder
.CreateDefault();
services.AddSingleton(
ctx =>
{
foreach (var projection in ctx.GetServices <IProjectEvents>())
{
agent.AddProjection(projection);
}
if (configure != null)
{
agent = configure(agent);
}
return(agent
.UseEventStream(ctx.GetService <IStreamEvents>()));
});
}
public async Task Default_Configuration_Projects_Events()
{
var sciFiEvents = new List <IEvent>
{
new MovieAddedToCatalogue("A third movie", Genre.SciFi),
new MovieAddedToCatalogue("Fourth movie", Genre.SciFi),
};
var crimeEvents = new List <IEvent>
{
new MovieAddedToCatalogue("A movie", Genre.Crime),
new MovieAddedToCatalogue("A second movie", Genre.Crime),
new MovieAddedToCatalogue("Another movie", Genre.Crime)
};
var eventStream = new PullEventStream(
new EventStore(
sciFiEvents.Concat(crimeEvents).ToList()
),
new PullEventStream.Config
{
PullInterval = TimeSpan.FromMilliseconds(10)
}
);
var offsetTracker = new Mock <ITrackOffset>();
offsetTracker
.Setup(t => t.GetOffsetAsync(It.IsAny <Type>()))
.ReturnsAsync(0);
var sciFiProjection = new SciFiMoviesProjection(offsetTracker.Object);
var crimeProjection = new CrimeMoviesProjection(offsetTracker.Object);
var cts = new CancellationTokenSource(2000);
await Assert.ThrowsAsync <TaskCanceledException>(
async() => await ApertureAgentBuilder
.CreateDefault()
.UseCancellationTokenSource(cts)
.AddProjection(sciFiProjection)
.AddProjection(crimeProjection)
.UseEventStream(eventStream)
.StartAsync());
sciFiProjection.Events
.Should()
.BeEquivalentTo(sciFiEvents);
crimeProjection.Events
.Should()
.BeEquivalentTo(crimeEvents);
}
public static void AddApertureAgent(this IServiceCollection services)
{
services.AddDefaultPullEventStream();
services.AddOffsetTracker();
services.AddProjections();
services.AddSingleton(
ctx => ApertureAgentBuilder
.CreateDefault()
.AddProjection(ctx.GetService <SciFiMoviesServerProjection>())
.AddProjection(ctx.GetService <CrimeMovieServerProjection>())
.UseRestartWithBackOffSupervision()
.UseEventStream(ctx.GetService <IStreamEvents>()));
}