static void Main(string[] args)
{
if (args.Length == 0 || !int.TryParse(args[0], out _))
{
return;
}
Console.WriteLine("GameCentral Database Kafka Service");
Console.WriteLine("Port: " + args[0]);
Console.WriteLine("Ctrl + C to exit");
Console.WriteLine("=====================================");
var source = new CancellationTokenSource();
var token = source.Token;
Console.CancelKeyPress += delegate { source.Cancel(); };
var options = new DbContextOptionsBuilder <GameCentralContext>();
options.UseSqlServer(@"Server=localhost\SQLEXPRESS;Database=GameCentral;Trusted_Connection=True;Integrated Security=True");
using var context = new GameCentralContext(options.Options);
var repository = new EfGameCentralRepository(context);
}
async Task Run()
{
Console.WriteLine("Writer service started:");
var config = new ConsumerConfig {
BootstrapServers = "localhost:9092",
GroupId = "GameWriter"
};
Consumer = new ConsumerBuilder <string, Game>(config).SetValueDeserializer(new GameDeserializer()).Build();
Consumer.Subscribe(Topic);
var contextOptionsBuilder = new DbContextOptionsBuilder <GameCentralContext>();
contextOptionsBuilder.UseSqlite(SQLiteConnection);
using var repository = new EfGameCentralRepository(new GameCentralContext(contextOptionsBuilder.Options));
var tokenSource = new CancellationTokenSource();
Console.CancelKeyPress += delegate { tokenSource.Cancel(); };
var token = tokenSource.Token;
while (!tokenSource.IsCancellationRequested)
{
var consumeResult = Consumer.Consume(token);
Console.Write($"[Consume] Offset: {consumeResult.Offset}, Action: {consumeResult.Message.Key}, Id: {(consumeResult.Message.Value.GameId != null ? consumeResult.Message.Value.GameId.ToString() : "null")}");
Console.WriteLine($", Title: {consumeResult.Message.Value.Title ?? "null"}");
var message = consumeResult.Message;
Thread.Sleep(10);
switch (message.Key)
{
case "ADD": {
try {
await repository.AddGameAsync(message.Value);
}
catch (Exception e) {
Console.WriteLine(e.Message);
}
break;
}
case "EDIT": {
try {
await repository.EditGameAsync(message.Value);
}
catch (Exception e) {
Console.WriteLine(e.Message);
}
break;
}
case "DELETE": {
try {
await repository.RemoveGameAsync(message.Value.GameId ?? -1);
}
catch (Exception e) {
Console.WriteLine(e.Message);
}
break;
}
default: {
Thread.Sleep(10);
break;
}
}
}
Consumer.Dispose();
Console.WriteLine("Finish");
}
