public CounterKafkaService(CafeDatabaseSettings cafeDatabaseSettings, CafeKafkaSettings cafeKafkaSettings)
{
try
{
_consumerConfig = KafkaConfig.CreateConsumerConfig(cafeKafkaSettings);
_producerConfig = KafkaConfig.CreateProducerConfig(cafeKafkaSettings);
Console.WriteLine(DateTime.Now + " - Read Kafka Bootstrap: " + cafeKafkaSettings.BootstrapServers);
}
catch (Exception ex)
{
Console.WriteLine("Exception in kafka settings: " + ex);
}
try
{
var client = new MongoClient(cafeDatabaseSettings.ConnectionString);
var database = client.GetDatabase(cafeDatabaseSettings.DatabaseName);
_orderRepository = database.GetCollection <Order>(cafeDatabaseSettings.OrdersCollectionName);
Console.WriteLine(DateTime.Now + " - Read MongoDB Connection String: " + cafeDatabaseSettings.ConnectionString);
Console.WriteLine(DateTime.Now + " - Read MongoDB DB Name: " + cafeDatabaseSettings.DatabaseName);
Console.WriteLine(DateTime.Now + " - Read MongoDB Collection Name: " + cafeDatabaseSettings.OrdersCollectionName);
}
catch (Exception ex)
{
Console.WriteLine("Exception in mongodb settings: " + ex);
}
}
public InventoryKafkaService(CafeKafkaSettings cafeKafkaSettings)
{
_stockRoom = new StockRoom();
try
{
_consumerConfig = new ConsumerConfig()
{
GroupId = cafeKafkaSettings.GroupId,
BootstrapServers = cafeKafkaSettings.BootstrapServers,
AutoOffsetReset = AutoOffsetReset.Earliest,
SocketKeepaliveEnable = true,
AllowAutoCreateTopics = true
};
_producerConfig = new ProducerConfig()
{
BootstrapServers = cafeKafkaSettings.BootstrapServers
};
Console.WriteLine("Read Kafka Bootstrap: " + cafeKafkaSettings.BootstrapServers);
}
catch (Exception ex)
{
Console.WriteLine("Exception in kafka settings: " + ex);
}
}
public KitchenKafkaService(CafeKafkaSettings cafeKafkaSettings)
{
_kitchen = new Kitchen();
try
{
_consumerConfig = KafkaConfig.CreateConsumerConfig(cafeKafkaSettings);
_producerConfig = KafkaConfig.CreateProducerConfig(cafeKafkaSettings);
Console.WriteLine(DateTime.Now + " - Read Kafka Bootstrap: " + cafeKafkaSettings.BootstrapServers);
}
catch (Exception ex)
{
Console.WriteLine("Exception in kafka settings: " + ex);
}
}
public InventoryKafkaService(CafeKafkaSettings cafeKafkaSettings)
{
_stockRoom = new StockRoom();
try
{
_consumerConfig = KafkaConfig.CreateConsumerConfig(cafeKafkaSettings);
_producerConfig = KafkaConfig.CreateProducerConfig(cafeKafkaSettings);
Console.WriteLine("Read Kafka Bootstrap: " + cafeKafkaSettings.BootstrapServers);
}
catch (Exception ex)
{
Console.WriteLine("Exception in kafka settings: " + ex);
}
}
public BaristaKafkaService(CafeKafkaSettings cafeKafkaSettings)
{
_barista = new Barista();
try
{
_consumerConfig = KafkaConfig.CreateConsumerConfig(cafeKafkaSettings);
_producerConfig = KafkaConfig.CreateProducerConfig(cafeKafkaSettings);
Console.WriteLine("Read Kafka Bootstrap: " + cafeKafkaSettings.BootstrapServers);
}
catch (Exception ex)
{
Console.WriteLine("Exception in kafka settings: " + ex);
}
}
public async Task Get(CancellationToken cancellationToken)
{
var response = Response;
response.StatusCode = 200;
response.Headers.Add("Content-Type", "text/event-stream");
response.Headers.Add("Cache-Control", "no-cache");
response.Headers.Add("Connection", "keep-alive");
String kafkaBootstrap = Environment.GetEnvironmentVariable("DOTNET_CAFE_KAFKA_BOOTSTRAP") ?? "127.0.0.1:9099";
var cafeKafkaSettings = new CafeKafkaSettings(kafkaBootstrap);
var consumerConfig = new ConsumerConfig()
{
GroupId = cafeKafkaSettings.GroupId,
BootstrapServers = cafeKafkaSettings.BootstrapServers,
AutoOffsetReset = AutoOffsetReset.Earliest,
SocketKeepaliveEnable = true,
AllowAutoCreateTopics = true
};
Task.Run(() => { ConsumeKafka(consumerConfig, cancellationToken); });
await response.Body.FlushAsync();
while (!cancellationToken.IsCancellationRequested)
{
while (queue.TryDequeue(out var message))
{
OrderUpEvent item = JsonSerializer.Deserialize <OrderUpEvent>(message);
DashboardUpdate dashboardUpdate = new DashboardUpdate(item);
var serializerOptions = new JsonSerializerOptions
{
Converters = { new JsonStringEnumConverter() },
IgnoreNullValues = true
};
String dashboardUpdateJson = JsonSerializer.Serialize(dashboardUpdate, serializerOptions);
await response.WriteAsync($"data:{dashboardUpdateJson} \n\n");
await response.Body.FlushAsync();
}
await Task.Delay(1 * 1000);
}
}
public CounterKafkaService(CafeDatabaseSettings cafeDatabaseSettings, CafeKafkaSettings cafeKafkaSettings)
{
try
{
_consumerConfig = new ConsumerConfig()
{
GroupId = cafeKafkaSettings.GroupId,
BootstrapServers = cafeKafkaSettings.BootstrapServers,
AutoOffsetReset = AutoOffsetReset.Earliest,
SocketKeepaliveEnable = true,
AllowAutoCreateTopics = true
};
_producerConfig = new ProducerConfig()
{
BootstrapServers = cafeKafkaSettings.BootstrapServers
};
Console.WriteLine("Read Kafka Bootstrap: " + cafeKafkaSettings.BootstrapServers);
}
catch (Exception ex)
{
Console.WriteLine("Exception in kafka settings: " + ex);
}
try
{
var client = new MongoClient(cafeDatabaseSettings.ConnectionString);
var database = client.GetDatabase(cafeDatabaseSettings.DatabaseName);
_orderRepository = database.GetCollection <Order>(cafeDatabaseSettings.OrdersCollectionName);
Console.WriteLine("Read MongoDB Connection String: " + cafeDatabaseSettings.ConnectionString);
Console.WriteLine("Read MongoDB DB Name: " + cafeDatabaseSettings.DatabaseName);
Console.WriteLine("Read MongoDB Collection Name: " + cafeDatabaseSettings.OrdersCollectionName);
}
catch (Exception ex)
{
Console.WriteLine("Exception in mongodb settings: " + ex);
}
}
private async Task SendMessage(String json)
{
String kafkaBootstrap = Environment.GetEnvironmentVariable("DOTNET_CAFE_KAFKA_BOOTSTRAP") ?? "127.0.0.1:9099";
var cafeKafkaSettings = new CafeKafkaSettings(kafkaBootstrap);
var producerConfig = new ProducerConfig {
BootstrapServers = cafeKafkaSettings.BootstrapServers
};
using (var p = new ProducerBuilder <Null, string>(producerConfig).Build())
{
try
{
var dr = await p.ProduceAsync("web-in", new Message <Null, string> {
Value = json
});
Console.WriteLine($"Delivered '{dr.Value}' to '{dr.TopicPartitionOffset}'");
}
catch (ProduceException <Null, string> e)
{
Console.WriteLine($"Delivery failed: {e.Error.Reason}");
}
}
}
