在单个 ASP.NET Core WebAPI 服务中托管多个产品 API [英] Hosting multiple product APIs in single ASP.NET Core WebAPI Service

问题描述

我正在设计一个基于 ASP.NET Core 的 Web API，它需要支持我的产品的多种变体，比如基于许可证或安装的种类.

I am designing an ASP.NET Core based Web API, which needs to support multiple variants of my product, let's say based on a license or the variety which it was installed.

我没有为每种类型的产品提供多种服务，而是想到了一个包含/托管多个端点或 URL 的单一服务.我将在安装时在 appsettings.json 中进行配置.

Instead of going for multiple services for each type of product, I thought of a single service which houses/hosts multiple Endpoints or URLs. I will make this configurable in the appsettings.json at the time of installation.

我知道 UseUrls 创建 WebHost，但我可以将一组 URL 中的特定 URL 绑定到特定控制器吗?

I am aware of the UseUrls on creating the WebHost, but can I bind the specific URL in a set of URLs to specific Controllers?

代码:

WebHost.CreateDefaultBuilder(args)
.UseUrls("http://localhost:5000;http://localhost:5001;https://localhost:5002")

期待

https://localhost:5000/ --> Product1Controller
https://localhost:5001/ --> Product2Controller
https://localhost:5002/ --> Product2Controller

我是 ASP.NET Core 的新手，如果可以实现，请帮助我.提前致谢.

I am new to the ASP.NET Core, please help me if this is achievable or not. Thanks in advance.

推荐答案

一种解决方法是在启用特定端口的 api 控制器上添加自定义约束.

A workaround is to add custom Constraint on api controller which is enabled with specific port.

1.创建一个PortActionConstraint类:

[AttributeUsage(AttributeTargets.Class)]
public class PortActionConstraint : ActionMethodSelectorAttribute
{
    public PortActionConstraint(int port)
    {
        Port = port;
    }

    public int Port { get; }

    public override bool IsValidForRequest(RouteContext routeContext, ActionDescriptor action)
    {
        //external port
        var externalPort = routeContext.HttpContext.Request.Host.Port;
        //local port 
        var localPort = routeContext.HttpContext.Connection.LocalPort;
        //write here your custom logic. for example  
        return Port == localPort;
    }
}

2.在所有控制器上添加具有对应端口号的属性，如

2.Add attribute with correspond port number on all controller like

[PortActionConstraint(5000)]
[Route("api/[controller]")]
[ApiController]
public class Product1Controller : ControllerBase

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