class Program
    {
        static void Main(string[] args)
        {
            var projectId = "xxxxxxx-0000";
            var datasetId = "xxxxxxx";
            var tableId = "hello{yyyyMM01}";
            var serviceAccountEmail = "000000000000-xxxxxxxxxxxxx@developer.gserviceaccount.com";
            var privateKeyFile = @"/path/to/xxxx-000000000000.p12";
            var tableSchemaFile = @"/path/to/hello.json";
            using (var listener = new ObservableEventListener())
            using (var listenerDebug = new ObservableEventListener())
            {
                listenerDebug.EnableEvents(SemanticLoggingEventSource.Log, EventLevel.LogAlways);
                listenerDebug.EnableEvents(BigQuerySinkEventSource.Log, EventLevel.LogAlways);
                listenerDebug.LogToConsole();

                listener.EnableEvents(MyEventSource.Log, EventLevel.LogAlways);
                listener.LogToConsole();
                listener.LogToBigQuery(
                    projectId: projectId,
                    datasetId: datasetId,
                    tableId: tableId,
                    serviceAccountEmail: serviceAccountEmail,
                    privateKeyFile: privateKeyFile,
                    autoCreateTable: true,
                    tableSchemaFile: tableSchemaFile);

                MyEventSource.Log.Start();
                Thread.Sleep(1);
                MyEventSource.Log.Hello("World");
                Thread.Sleep(1);
                MyEventSource.Log.End();
            }
        }
    }

    [EventSource(Name = "My")]
    class MyEventSource : EventSource
    {
        private static readonly MyEventSource Instance = new MyEventSource();
        private MyEventSource() {}
        public static MyEventSource Log { get { return Instance; } }

        [Event(1, Level = EventLevel.Verbose, Message = "Start")]
        public void Start()
        {
            if (this.IsEnabled())
                this.WriteEvent(1);
        }

        [Event(2, Level = EventLevel.Verbose, Message = "End")]
        public void End()
        {
            if (this.IsEnabled())
                this.WriteEvent(2);
        }

        [Event(3, Level = EventLevel.Informational, Message = "Hello {0}!")]
        public void Hello(string to)
        {
            if (this.IsEnabled())
                this.WriteEvent(3, to);
        }
    }