/// <summary>
/// 创建客户端。
/// </summary>
/// <param name="endPoint">终结点。</param>
/// <returns>传输客户端实例。</returns>
public ITransportClient CreateClient(EndPoint endPoint)
{
var key = endPoint;
if (_logger.IsEnabled(LogLevel.Debug))
{
_logger.LogDebug($"准备为服务端地址：{key}创建客户端。");
}
try
{
return(_clients.GetOrAdd(key
, k => new Lazy <ITransportClient>(() =>
{
var bootstrap = _bootstrap;
var channel = bootstrap.ConnectAsync(k).Result;
var messageListener = new MessageListener();
channel.GetAttribute(messageListenerKey).Set(messageListener);
var messageSender = new DotNettyMessageClientSender(_transportMessageEncoder, channel);
channel.GetAttribute(messageSenderKey).Set(messageSender);
channel.GetAttribute(origEndPointKey).Set(k);
var client = new TransportClient(messageSender, messageListener, _logger, _serviceExecutor);
return client;
}
)).Value);
}
catch
{
_clients.TryRemove(key, out var value);
throw;
}
}
/// <summary>
/// 创建客户端。
/// </summary>
/// <param name="endPoint">终结点。</param>
/// <returns>传输客户端实例。</returns>
public async Task <ITransportClient> CreateClientAsync(EndPoint endPoint)
{
var key = endPoint;
if (_logger.IsEnabled(LogLevel.Debug))
{
_logger.LogDebug($"准备为服务端地址：{key}创建客户端。");
}
try
{
return(await _clients.GetOrAdd(key
, k => new Lazy <Task <ITransportClient> >(async() =>
{
//客户端对象
var bootstrap = _bootstrap;
//异步连接返回channel
var channel = await bootstrap.ConnectAsync(k);
var messageListener = new MessageListener();
//设置监听
channel.GetAttribute(messageListenerKey).Set(messageListener);
//实例化发送者
var messageSender = new DotNettyMessageClientSender(_transportMessageEncoder, channel);
//设置channel属性
channel.GetAttribute(messageSenderKey).Set(messageSender);
channel.GetAttribute(origEndPointKey).Set(k);
//创建客户端
var client = new TransportClient(messageSender, messageListener, _logger, _serviceExecutor);
return client;
}
)).Value);//返回实例
}
catch
{
//移除
_clients.TryRemove(key, out var value);
var ipEndPoint = endPoint as IPEndPoint;
//标记这个地址是失败的请求
if (ipEndPoint != null)
{
await _healthCheckService.MarkFailure(new IpAddressModel(ipEndPoint.Address.ToString(), ipEndPoint.Port));
}
throw;
}
}
