public async Task SubscribeAsync <T>(Func <T, SubscribeContext, Task> handler, SubscribeOptions subscribeOptions = null, CancellationToken cancellationToken = default(CancellationToken)) where T : class
{
string topic = GetTopic(typeof(T));
var groupId = subscribeOptions?.GroupId;
groupId = !string.IsNullOrEmpty(groupId) ? groupId : _kafkaOptions.ConsumerConfig.GroupId;
var threadCount = subscribeOptions?.ConsumerThreadCount ?? 0;
threadCount = threadCount > 0 ? threadCount : _kafkaOptions.DefaultConsumerThreadCount;
AssertUtils.IsTrue(threadCount > 0, "消费者线程数必须大于0");
ValidateSubscribe(topic, groupId);
_logger.LogInformation($"订阅Topic:{topic},GroupId:{groupId},ConsumerThreadCount:{threadCount}");
for (int i = 0; i < threadCount; i++)
{
var consumer = new KafkaConsumer <string, KafkaMessageBusData>(_serviceProvider);
consumer.OnMessage += consumeResult =>
{
return(With.NoException(_logger, async() =>
{
var obj = _kafkaOptions.Serializer.Deserialize <T>(consumeResult.Message.Value.Data);
var subscribeContext = new SubscribeContext {
Topic = topic, GroupId = groupId
};
await handler(obj, subscribeContext);
}, $"消费数据{consumeResult.Message.Value.Topic}"));
};
_consumerList.Add(consumer);
await consumer.Subscribe(topic, groupId, cancellationToken);
}
}
public static void SubscribeControl(WindowsFormsHost glControlHost)
{
Exceptions.CheckArgumentNull(glControlHost, "glControlHost");
GLControl glControl = glControlHost.Child as GLControl;
if (glControl == null)
{
throw new ArgumentException("glControlHost");
}
SubscribeContext subscribeContext = new SubscribeContext
{
OnInvalidateControlRequestRecived = () => glControl.Invalidate(),
OnViewportDesiredSizeChanged = (dw, dh) => glControlHost.Dispatcher.BeginInvoke(new Action(() =>
{
glControlHost.Width = dw;
glControlHost.Height = dh;
glControl.Width = dw;
glControl.Height = dh;
}))
};
if (!SubscribeContexts.TryAdd(glControlHost, subscribeContext))
{
throw new Exception("Элемент управления уже зарегистрирован.");
}
InvalidateControlRequestRecived += subscribeContext.OnInvalidateControlRequestRecived;
ViewportDesiredSizeChanged += subscribeContext.OnViewportDesiredSizeChanged;
glControl.Invalidate();
}
public void ShouldShallowCloneContextBag()
{
var context = new ContextBag();
context.Set("someKey", "someValue");
var testee = new SubscribeContext(new RootContext(null, null, null), typeof(object), context);
testee.Extensions.Set("someKey", "updatedValue");
testee.Extensions.Set("anotherKey", "anotherValue");
string value;
string anotherValue;
context.TryGet("someKey", out value);
Assert.AreEqual("someValue", value);
Assert.IsFalse(context.TryGet("anotherKey", out anotherValue));
string updatedValue;
string anotherValue2;
testee.Extensions.TryGet("someKey", out updatedValue);
testee.Extensions.TryGet("anotherKey", out anotherValue2);
Assert.AreEqual("updatedValue", updatedValue);
Assert.AreEqual("anotherValue", anotherValue2);
}
private static void RemoveSubscriber(string username)
{
username = username.ToLower();
if (_Subscribers.ContainsKey(username))
{
SubscribeContext outObj = null;
_Subscribers.TryRemove(username, out outObj);
}
}
public void ShouldShallowCloneContextBag()
{
var context = new ContextBag();
context.Set("someKey", "someValue");
var testee = new SubscribeContext(new FakeRootContext(), new Type[0], context);
testee.Extensions.Set("someKey", "updatedValue");
testee.Extensions.Set("anotherKey", "anotherValue");
context.TryGet("someKey", out string value);
Assert.AreEqual("someValue", value);
Assert.IsFalse(context.TryGet("anotherKey", out string _));
testee.Extensions.TryGet("someKey", out string updatedValue);
testee.Extensions.TryGet("anotherKey", out string anotherValue2);
Assert.AreEqual("updatedValue", updatedValue);
Assert.AreEqual("anotherValue", anotherValue2);
}
public HomeController(SubscribeContext context)
{
_context = context;
}
public static void SubscribeControl(WindowsFormsHost glControlHost)
{
Exceptions.CheckArgumentNull(glControlHost, "glControlHost");
GLControl glControl = glControlHost.Child as GLControl;
if (glControl == null) throw new ArgumentException("glControlHost");
SubscribeContext subscribeContext = new SubscribeContext
{
OnInvalidateControlRequestRecived = () => glControl.Invalidate(),
OnViewportDesiredSizeChanged = (dw, dh) => glControlHost.Dispatcher.BeginInvoke(new Action(() =>
{
glControlHost.Width = dw;
glControlHost.Height = dh;
glControl.Width = dw;
glControl.Height = dh;
}))
};
if (!SubscribeContexts.TryAdd(glControlHost, subscribeContext))
throw new Exception("Элемент управления уже зарегистрирован.");
InvalidateControlRequestRecived += subscribeContext.OnInvalidateControlRequestRecived;
ViewportDesiredSizeChanged += subscribeContext.OnViewportDesiredSizeChanged;
glControl.Invalidate();
}