/// <inheritdoc />
/// <summary> 创建客户端 </summary>
/// <param name="serviceAddress">终结点。</param>
/// <returns>传输客户端实例。</returns>
public IMicroClient CreateClient(ServiceAddress serviceAddress)
{
//_logger.Debug($"准备为服务端地址：{endPoint}创建客户端。");
try
{
var lazyClient = _clients.GetOrAdd(serviceAddress.ToString(), k => new Lazy <IMicroClient>(() =>
{
_logger.LogDebug($"创建客户端：{serviceAddress}创建客户端。");
var bootstrap = _bootstrap;
var channel = bootstrap.ConnectAsync(serviceAddress.ToEndPoint(false)).Result;
var listener = new MessageListener();
var sender = new DotNettyClientSender(_codecFactory.GetEncoder(), channel);
channel.GetAttribute(ListenerKey).Set(listener);
channel.GetAttribute(SenderKey).Set(sender);
channel.GetAttribute(ServiceAddressKey).Set(serviceAddress);
return(new MicroClient(_logger, sender, listener, _microExecutor));
}
));
return(lazyClient.Value);
}
catch (Exception ex)
{
_logger.LogError(ex, "创建客户端失败");
_clients.TryRemove(serviceAddress.ToString(), out _);
throw;
}
}
private async Task <ResultMessage> BaseInvoke(MethodInfo targetMethod, object[] args)
{
var services = (await _serviceFinder.Find(targetMethod.DeclaringType) ?? new List <ServiceAddress>()).ToList();
var invokeMessage = Create(targetMethod, args);
ServiceAddress service = null;
var builder = Policy
.Handle <Exception>(ex => ex.GetBaseException() is SocketException) //服务器异常
.OrResult <ResultMessage>(r => r.Code != 200); //服务未找到
//熔断,3次异常,熔断5分钟
var breaker = builder.CircuitBreakerAsync(3, TimeSpan.FromMinutes(5));
//重试3次
var retry = builder.RetryAsync(3, (result, count) =>
{
_logger.Warn(result.Exception != null
? $"{service}{targetMethod.Name}:retry,{count},{result.Exception.Format()}"
: $"{service}{targetMethod.Name}:retry,{count},{result.Result.Code}");
services.Remove(service);
});
var policy = Policy.WrapAsync(retry, breaker);
return(await policy.ExecuteAsync(async() =>
{
if (!services.Any())
{
throw ErrorCodes.NoService.CodeException();
}
service = services.RandomSort().First();
return await InvokeAsync(service.ToEndPoint(), invokeMessage);
}));
}
public override async Task Start(ServiceAddress serviceAddress)
{
_logger.Debug($"准备启动服务主机，监听地址：{serviceAddress}。");
var bossGroup = new MultithreadEventLoopGroup(1);
var workerGroup = new MultithreadEventLoopGroup();//Default eventLoopCount is Environment.ProcessorCount * 2
var bootstrap = new ServerBootstrap();
bootstrap
.Group(bossGroup, workerGroup)
.Channel <TcpServerSocketChannel>()
.Option(ChannelOption.SoBacklog, 100)
.ChildOption(ChannelOption.Allocator, PooledByteBufferAllocator.Default)
.ChildHandler(new ActionChannelInitializer <ISocketChannel>(channel =>
{
var pipeline = channel.Pipeline;
pipeline.AddLast(new LengthFieldPrepender(4));
pipeline.AddLast(new LengthFieldBasedFrameDecoder(int.MaxValue, 0, 4, 0, 4));
pipeline.AddLast(new MicroMessageHandler(_coderFactory.GetDecoder()));
pipeline.AddLast(new ServerHandler(async(contenxt, message) =>
{
var sender = new DotNettyServerSender(_coderFactory.GetEncoder(), contenxt);
await OnReceived(sender, message);
}));
}));
var endPoint = serviceAddress.ToEndPoint();
_channel = await bootstrap.BindAsync(endPoint);
_logger.Info($"服务主机启动成功，监听地址：{serviceAddress}。");
}
/// <inheritdoc />
/// <summary> 创建客户端 </summary>
/// <param name="serviceAddress">终结点。</param>
/// <returns>传输客户端实例。</returns>
protected override async Task <IMicroClient> Create(ServiceAddress serviceAddress)
{
var bootstrap = CreateBootstrap(serviceAddress);
var channel = await bootstrap.ConnectAsync(serviceAddress.ToEndPoint(false));
var listener = new MessageListener();
var codec = Provider.GetClientCodec(serviceAddress.Codec);
var sender = new DotNettyClientSender(codec, channel, serviceAddress);
channel.GetAttribute(ListenerKey).Set(listener);
channel.GetAttribute(SenderKey).Set(sender);
channel.GetAttribute(ServiceAddressKey).Set(serviceAddress);
return(new MicroClient(sender, listener, MicroExecutor, LoggerFactory));
}
public override async Task Start(ServiceAddress serviceAddress)
{
var endpoint = serviceAddress.ToEndPoint() as IPEndPoint;
_host = new WebHostBuilder()
.UseContentRoot(Directory.GetCurrentDirectory())
.UseKestrel(options =>
{
options.Listen(endpoint);
})
.ConfigureServices(ConfigureServices)
.Configure(AppResolve)
.Build();
await _host.RunAsync();
}
public override async Task Start(ServiceAddress serviceAddress)
{
_logger.LogDebug($"准备启动服务主机，监听地址：{serviceAddress}。");
var bossGroup = new MultithreadEventLoopGroup(1);
var workerGroup = new MultithreadEventLoopGroup();
var bootstrap = new ServerBootstrap();
bootstrap
.Channel <TcpServerSocketChannel>()
.Option(ChannelOption.SoBacklog, 8192)
.ChildOption(ChannelOption.Allocator, PooledByteBufferAllocator.Default)
.Group(bossGroup, workerGroup)
.ChildHandler(new ActionChannelInitializer <ISocketChannel>(channel =>
{
var pipeline = channel.Pipeline;
pipeline.AddLast(new LengthFieldPrepender(4));
pipeline.AddLast(new LengthFieldBasedFrameDecoder(int.MaxValue, 0, 4, 0, 4));
pipeline.AddLast(new MicroMessageHandler <InvokeMessage>(_messageCodec, serviceAddress.Gzip));
pipeline.AddLast(new ServerHandler(async(contenxt, message) =>
{
var sender = new DotNettyServerSender(_messageCodec, contenxt, serviceAddress);
await OnReceived(sender, message);
}, _loggerFactory));
}));
try
{
var endPoint = serviceAddress.ToEndPoint();
_channel = await bootstrap.BindAsync(endPoint);
_logger.LogInformation($"服务主机启动成功，监听地址：{serviceAddress}。");
}
catch (Exception ex)
{
_logger.LogError(ex, $"服务主机启动失败，监听地址：{serviceAddress}。 ");
}
}
