public async Task Receive_AllMessagesAreReceived_SomeMessagesAreNacked(int numberOfMessagesToBeReceived,
float changeForMessageToBeNacked)
{
// declare variables
var topicName = RandomGenerator.GenerateString(10);
var loggerFactory = new LoggerFactory();
var messageStore = new MessageStore(loggerFactory.CreateLogger <MessageStore>());
messageStore.Setup(topicName, numberOfMessagesToBeReceived);
var serverEndPoint = new IPEndPoint(IPAddress.Loopback, 8001);
var clientConnectionConfiguration = new ClientConnectionConfiguration
{
AutoReconnect = true,
EndPoint = serverEndPoint
};
// setup server
var brokerBuilder = new BrokerBuilder();
using var broker = brokerBuilder
.UseMemoryStore()
.UseEndPoint(serverEndPoint)
.Build();
broker.Start();
var clientFactory = new BrokerClientFactory();
// setup subscriber
await using var subscriberClient = clientFactory.GetClient();
subscriberClient.Connect(clientConnectionConfiguration);
// declare topic
var declareResult = await subscriberClient.DeclareTopicAsync(topicName, topicName);
Assert.True(declareResult.IsSuccess);
// setup a topic with test data
PopulateTopicWithMessage(topicName, numberOfMessagesToBeReceived, messageStore, broker);
// get new subscription
var subscription = await subscriberClient.GetTopicSubscriptionAsync(topicName);
// setup subscriber
subscription.MessageReceived += msg =>
{
if (RandomGenerator.GenerateDouble() < changeForMessageToBeNacked)
{
msg.Nack();
return;
}
// note: the id of msg has changed
var messageData = new Guid(msg.Data.Span);
messageStore.OnMessageReceived(messageData);
msg.Ack();
};
messageStore.WaitForAllMessageToBeReceived();
}
public async Task Send_AllMessagesAreSent_PublisherIsDisconnectedMultipleTimes(int numberOfMessagesToSend,
float chanceOfClientFailure)
{
// in this test we will try to send n messages to server while keep disconnecting the client
// to make sure that messages will be received by the server and the acknowledge will be received
// by the client
// declare variables
var topicName = RandomGenerator.GenerateString(10);
var loggerFactory = new LoggerFactory();
var messageStore = new MessageStore(loggerFactory.CreateLogger <MessageStore>());
messageStore.Setup(topicName, numberOfMessagesToSend);
var serverEndPoint = new IPEndPoint(IPAddress.Loopback, 8002);
var clientConnectionConfiguration = new ClientConnectionConfiguration
{
AutoReconnect = true,
EndPoint = serverEndPoint
};
// setup server
var brokerBuilder = new BrokerBuilder();
using var broker = brokerBuilder
.UseMemoryStore()
.UseEndPoint(serverEndPoint)
.Build();
broker.Start();
var clientFactory = new BrokerClientFactory();
// setup publisher
await using var publisherClient = clientFactory.GetClient();
publisherClient.Connect(clientConnectionConfiguration);
// declare topic
var declareResult = await publisherClient.DeclareTopicAsync(topicName, topicName);
Assert.True(declareResult.IsSuccess);
while (messageStore.SentCount < numberOfMessagesToSend)
{
if (RandomGenerator.GenerateDouble() < chanceOfClientFailure)
{
ThreadPool.QueueUserWorkItem(_ =>
{
publisherClient.ConnectionManager.Socket.SimulateInterrupt();
});
}
var msg = messageStore.NewMessage();
var cancellationTokenSource = new CancellationTokenSource(TimeSpan.FromSeconds(1));
var publishResult = await publisherClient.PublishAsync(topicName, msg.Data.ToArray(), cancellationTokenSource.Token);
if (publishResult.IsSuccess)
{
messageStore.OnMessageSent(msg.Id);
}
}
messageStore.WaitForAllMessageToBeSent();
}