英文:
How to handle proxying to multiple services with golang and labstack echo
问题
我是你的中文翻译助手，以下是翻译好的内容：
我刚开始学习Go语言和微服务开发，但我希望我的问题能够有意义：
假设我有一个处理用户操作的微服务，例如创建、显示和更新用户，可在localhost:8081/users上访问。
此外，我还有一个处理事件创建、显示和更新的微服务，可在localhost:8082/events上访问。
在这之上，还有一个网关，可在localhost:8080上访问，它应该作为代理将传入的请求分发到正确的服务。
我找到了一段代码，可以将请求从我的网关重定向到用户服务：
proxy := httputil.NewSingleHostReverseProxy(&url.URL{
Scheme: "http",
Host: "localhost:8081",
})
http.ListenAndServe(":8080", proxy)
但有两件事让我困扰：
-
我应该如何处理多个微服务的分发？我想要一个条件，例如：“如果客户端请求
localhost:8080/users，它应该转到用户服务。如果请求localhost:8080/events，它应该转到事件服务。”（如果这种方法是错误的，请随时告诉我） -
正如我在标题中提到的，我正在使用labstack/echo路由器，所以我不想使用
http.ListenAndServe(":8080", proxy)来启动我的服务器，而是使用类似以下的方式：
e := echo.New()
e.Start(":8080")
但我找不到如何使用这个工具传递代理作为参数的方法。
英文:
I'm new to Go and Micro-services development, but I hope my question will make sense:
Let's say I have a micro-service handling users actions such as creating, showing & updating an user, available at localhost:8081/users.
Beside that, I have a micro-service handlings events' creation, show & update as well, available at localhost:8082/events.
And, above that, there is a gateway, available at localhost:8080 which is suppose to act as a proxy to dispatch the incoming request to the right service.
I found this piece of code which is working well to redirect from my gateway to my user's service:
proxy := httputil.NewSingleHostReverseProxy(&url.URL{
Scheme: "http",
Host: "localhost:8081",
})
http.ListenAndServe(":8080", proxy)
But two things are bothering me:
-
How am I suppose to handle dispatching on multiple micro-services? I'd like to have a condition such as: "If the client requests
localhost:8080/usersit should go to the user's service. If he requestslocalhost:8080/eventsit should go to the event's service. (Please feel free to tell me if this approach is just wrong) -
As I mentioned in the title, I'm using the labstack/echo Router, so I don't want to start my server with
http.ListenAndServe(":8080", proxy), but with something likee := echo.New()
e.Start(":8080")
But I can't find how to pass a proxy as parameter with this tool.
答案1
得分: 6
感谢您在labstack/echo的GitHub上发布的问题的答案，以下是解决方案：
httputil.ReverseProxy实现了http.Handler接口，所以您可以这样做：
e := echo.New()
proxy := httputil.NewSingleHostReverseProxy(&url.URL{
Scheme: "http",
Host: "localhost:8081",
})
e.Any("/users", echo.WrapHandler(proxy))
e.Start(":8080")
英文:
Thanks to an answer on an issue I posted on labstack/echo github, here is the solution:
httputil.ReverseProxy implements http.Handler, so you can do something like:
e := echo.New()
proxy := httputil.NewSingleHostReverseProxy(&url.URL{
Scheme: "http",
Host: "localhost:8081",
})
e.Any("/users", echo.WrapHandler(proxy))
e.Start(":8080")
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