/// <inheritdoc />
public Task <ISubscriptionTrackingService> CreateSubscriptionTrackingService(IConfiguration configuration)
{
var connectionName = configuration["connectionName"];
if (string.IsNullOrWhiteSpace(connectionName))
{
throw new ConfigurationErrorsException(
"Attribute 'connectionName' is required for SQL subscription tracking service");
}
var connectionStringSettings = ConfigurationManager.ConnectionStrings[connectionName];
if (connectionStringSettings == null)
{
throw new ConfigurationErrorsException($"Connection string settings \"{connectionName}\" not found");
}
var sqlSubscriptionTrackingService = new SQLSubscriptionTrackingService(connectionStringSettings);
sqlSubscriptionTrackingService.Init();
var multicastSection = configuration.GetSection("multicast");
var multicastFactory = new MulticastSubscriptionTrackingServiceFactory();
return(multicastFactory.InitSubscriptionTrackingService(multicastSection, sqlSubscriptionTrackingService));
}
public async Task Handles_Many_Concurrent_Calls_Correctly_Without_Errors()
{
var connectionStringSettings = GetConnectionStringSettings();
var sqlSubscriptionService = new SQLSubscriptionTrackingService(connectionStringSettings);
await sqlSubscriptionService.Init();
var topicNames = Enumerable.Range(0, 10)
.Select(i => new TopicName("Topic-" + i));
var subscriptions = topicNames
.SelectMany(t =>
Enumerable.Range(0, 100)
.Select(j => new Uri("http://localhost/subscriber-" + j))
.Select(s => new
{
Topic = t,
Subscriber = s
}))
.ToList();
await Task.WhenAll(subscriptions.Select(s => sqlSubscriptionService.AddSubscription(s.Topic, s.Subscriber)));
var subscriptionsByTopic = subscriptions.GroupBy(s => s.Topic);
foreach (var grouping in subscriptionsByTopic)
{
var expectedSubscribers = grouping.Select(g => g.Subscriber).ToList();
var actualSubscribers = await sqlSubscriptionService.GetSubscribers(grouping.Key);
Assert.That(actualSubscribers, Is.EquivalentTo(expectedSubscribers));
}
}
public async Task Subscriber_Should_Not_Be_Returned_After_It_Is_Removed()
{
var connectionStringSettings = GetConnectionStringSettings();
var sqlSubscriptionService = new SQLSubscriptionTrackingService(connectionStringSettings);
await sqlSubscriptionService.Init();
var topic = "topic-0";
var subscriber = new Uri("http://localhost/platibus");
await sqlSubscriptionService.AddSubscription(topic, subscriber);
var subscribers = await sqlSubscriptionService.GetSubscribers(topic);
Assert.That(subscribers, Has.Member(subscriber));
await sqlSubscriptionService.RemoveSubscription(topic, subscriber);
var subscribersAfterRemoval = await sqlSubscriptionService.GetSubscribers(topic);
Assert.That(subscribersAfterRemoval, Has.No.Member(subscriber));
}
public async Task<ISubscriptionTrackingService> CreateSubscriptionTrackingService(
SubscriptionTrackingElement configuration)
{
var connectionName = configuration.GetString("connectionName");
if (string.IsNullOrWhiteSpace(connectionName))
{
throw new ConfigurationErrorsException(
"Attribute 'connectionName' is required for SQL subscription tracking service");
}
var connectionStringSettings = ConfigurationManager.ConnectionStrings[connectionName];
if (connectionStringSettings == null)
{
throw new ConfigurationErrorsException("Connection string settings \"" + connectionName + "\" not found");
}
var sqlSubscriptionTrackingService = new SQLSubscriptionTrackingService(connectionStringSettings);
await sqlSubscriptionTrackingService.Init();
return sqlSubscriptionTrackingService;
}
public async Task Expired_Subscription_Should_Not_Be_Returned()
{
var connectionStringSettings = GetConnectionStringSettings();
Log.DebugFormat("Temp directory: {0}", connectionStringSettings);
var sqlSubscriptionService = new SQLSubscriptionTrackingService(connectionStringSettings);
await sqlSubscriptionService.Init();
var topic = "topic-0";
var subscriber = new Uri("http://localhost/platibus");
await sqlSubscriptionService.AddSubscription(topic, subscriber, TimeSpan.FromMilliseconds(1));
await Task.Delay(TimeSpan.FromMilliseconds(100));
var subscribers = await sqlSubscriptionService.GetSubscribers(topic);
Assert.That(subscribers, Has.No.Member(subscriber));
}
public async Task Existing_Subscriptions_Should_Be_Loaded_When_Initializing()
{
var connectionStringSettings = GetConnectionStringSettings();
var sqlSubscriptionService = new SQLSubscriptionTrackingService(connectionStringSettings);
await sqlSubscriptionService.Init();
var topicNames = Enumerable.Range(0, 10)
.Select(i => new TopicName("Topic-" + i));
var subscriptions = topicNames
.SelectMany(t =>
Enumerable.Range(0, 100)
.Select(j => new Uri("http://localhost/subscriber-" + j))
.Select(s => new
{
Topic = t,
Subscriber = s
}))
.ToList();
await Task.WhenAll(subscriptions.Select(s => sqlSubscriptionService.AddSubscription(s.Topic, s.Subscriber)));
// Next, initialize a new SQLSubscriptionService instance
// with the same directory and observe that the subscriptions
// are returned as expected.
var sqlSubscriptionService2 = new SQLSubscriptionTrackingService(connectionStringSettings);
await sqlSubscriptionService2.Init();
var subscriptionsByTopic = subscriptions.GroupBy(s => s.Topic);
foreach (var grouping in subscriptionsByTopic)
{
var expectedSubscribers = grouping.Select(g => g.Subscriber).ToList();
var actualSubscribers = await sqlSubscriptionService2.GetSubscribers(grouping.Key);
Assert.That(actualSubscribers, Is.EquivalentTo(expectedSubscribers));
}
}