public IActionResult Consumer()
{
var polly = PolicyBuilder.CreatePolly();
polly.Execute(() =>
{
var service = _consul.Resolve();
//service.Address
});
return(Ok(StatusCodes.Status200OK));
}
static void Main(string[] args)
{
var serviceProvider = new ConsulServiceProvider(new Uri("http://127.0.0.1:8500"));
var myServiceA = serviceProvider.CreateServiceBuilder(builder =>
{
builder.ServiceName = "ServiceA";
// 指定负载均衡器
builder.LoadBalancer = TypeLoadBalancer.RoundRobin;
// 指定Uri方案
builder.UriScheme = Uri.UriSchemeHttp;
});
var httpClient = new HttpClient();
var policy = PolicyBuilder.CreatePolly();
// 重试轮询+熔断降级
// 你去一个商场消费，某个商品卖断货，你可能寻求次级品，（提供的服务，就降级了）
// 服务A访问服务B，这个B老是失败，你失败多了，如果是高并发就会引发雪崩，我降级服务，我自己准一套备用的。
// 返回一个个空数据
// 源码肯定有，
for (int i = 0; i < 100; i++)
{
Console.WriteLine($"-------------第{i}次请求-------------");
policy.Execute(() =>
{
try
{
// 根据负载均衡获取具体服务地址
// consul崩了，仍然会被我们的polly接住
// 服务和服务间调用也一样
// 服务间传消息？直接调用API,MQ
// 每个有服务调用的服务应用，都用POLLY，服务挂了
var uri = myServiceA.BuildAsync("health").Result;
Console.WriteLine($"{DateTime.Now} - 正在调用：{uri}");
var content = httpClient.GetStringAsync(uri).Result;
Console.WriteLine($"调用结果：{content}");
}
catch (Exception e)
{
// 如果你要在策略里捕捉异常，如果这个异常还是你定义的故障，一定要把这异常再抛出来
Console.WriteLine($"调用异常：{e.GetType()}");
throw;
}
});
Task.Delay(1000).Wait();
}
}
public async Task <IActionResult> Index()
{
CoreResult coreResult = new CoreResult();
#region ServiceDiscovery
var serviceProvider = new ConsulServiceProvider(new Uri("http://127.0.0.1:8500"));
var _userServiceUrl = serviceProvider.CreateServiceBuilder(builder =>
{
builder.ServiceName = "UserApi";
builder.LoadBalancer = TypeLoadBalancer.RoundRobin;
builder.UriScheme = Uri.UriSchemeHttp;
}).BuildAsync("/api/user/servicesdiscovery").Result;
#endregion
var polly = PolicyBuilder.CreatePolly();
polly.Execute(() => {
try
{
var form = new Dictionary <string, string>()
{
{ "phone", "18650482503" }
};
var response = _httpClient.PostAsync(_userServiceUrl.ToString(), new FormUrlEncodedContent(form)).Result;
if (response.StatusCode == HttpStatusCode.OK)
{
coreResult.Success(response.Content.ReadAsStringAsync().Result);
}
else
{
coreResult.Failed(response.Content.ReadAsStringAsync().Result);
}
}
catch (Exception ex)
{
_logger.LogError("在重试之后失败");
throw new Exception(ex.Message);
}
});
return(Content(coreResult.Message));
}
public async Task GetServiceDiscovery()
{
var serviceDiscoveryProvider = new ConsulServiceProvider(new Uri("http://127.0.0.1:8500"));
#region 获取服务节点列表
//var serviceAList = await serviceDiscoveryProvider.GetServicesAsync("ServiceA");
//return serviceAList;
#endregion
var serviceA = serviceDiscoveryProvider.CreateServiceBuilder(builder =>
{
builder.ServiceName = "ServiceA";
// 指定负载均衡器
builder.LoadBalancer = TypeLoadBalancer.RoundRobin;
// 指定Uri方案
builder.UriScheme = Uri.UriSchemeHttp;
});
var httpClient = new HttpClient();
var policy = PolicyBuilder.CreatePolly();
for (int i = 0; i < 100; i++)
{
Console.WriteLine($"-------------第{i}次请求-------------");
policy.Execute(() =>
{
try
{
var uri = serviceA.BuildAsync("health").Result;
System.Diagnostics.Debug.WriteLine($"{DateTime.Now} - 正在调用：{uri}");
var content = httpClient.GetStringAsync(uri).Result;
System.Diagnostics.Debug.WriteLine($"调用结果：{content}");
}
catch (Exception e)
{
System.Diagnostics.Debug.WriteLine($"调用异常：{e.GetType()}");
}
});
Task.Delay(1000).Wait();
}
}
static void Main(string[] args)
{
var snowId = new SnowflakeId(1, 1);
var id = snowId.NextId();
var serviceProvider = new ConsulServiceProvider(new Uri("http://127.0.0.1:8500"));
var myServiceA = serviceProvider.CreateServiceBuilder(builder =>
{
builder.ServiceName = "MyServiceA";
// 指定负载均衡器
builder.LoadBalancer = TypeLoadBalancer.RoundRobin;
// 指定Uri方案
builder.UriScheme = Uri.UriSchemeHttp;
});
var httpClient = new HttpClient();
var polly = PolicyBuilder.CreatePolly();
//
for (int i = 0; i < 100; i++)
{
Console.WriteLine($"-------------第{i}次请求-------------");
polly.Execute(() =>
{
try
{
var uri = myServiceA.BuildAsync("health").Result;
Console.WriteLine($"{DateTime.Now} - 正在调用：{uri}");
var content = httpClient.GetStringAsync(uri).Result;
Console.WriteLine($"调用结果：{content}");
}
catch (Exception e)
{
Console.WriteLine($"调用异常：{e.GetType()}");
}
});
Task.Delay(1000).Wait();
}
}
static void Main(string[] args)
{
var serviceProvider = new ConsulServiceProvider(new Uri("http://127.0.0.1:8500"));
var myServiceA = serviceProvider.CreateServiceBuilder((builder) =>
{
builder.ServiceName = "MyServiceA";
builder.LoadBalancer = TypeLoadBalancer.RoundRobin;
builder.UriScheme = Uri.UriSchemeHttp;
});
var policy = PolicyBuilder.CreatePolly();
var httpClient = new HttpClient();
for (int i = 0; i < 100; i++)
{
policy.Execute(() =>
{
try
{
var uri = myServiceA.BuildAsync("/health").Result;
Console.WriteLine($"{DateTime.Now} - 正在调用:{uri}");
var content = httpClient.GetAsync(uri).Result;
Console.WriteLine($"调用结果:{content?.StatusCode}");
}
catch (Exception ex)
{
Console.WriteLine("业务逻辑异常 ex:" + ex.GetType());
throw;
}
});
Task.Delay(1000).Wait();
}
Console.Read();
}