英文:
Proxying GRPC requests on different hosts
问题
我们使用golang实现了GRPC API，并且现在需要一些机制来路由请求到两个不同的主机（prod/stage）。问题是路由规则必须依赖于grpc metadata，而不是头部信息。实际上，我们将iOS版本作为metadata参数传递。据我所知，例如Nginx无法做到这一点。我们没有k8s或其他东西，只有简单的API守护程序在某个端口上监听。
authConf := viper.GetStringMapString("auth")
creds, err := credentials.NewServerTLSFromFile(authConf["certfile"], authConf["keyfile"])
if err != nil {
panic(err)
}
lis, err := net.Listen("tcp", ":"+viper.GetString("port"))
if err != nil {
panic(err)
}
英文:
We implemented GRPC API using golang, and now need some mechanism to route requests on two different hosts (prod/stage). The problem is the routing rule must be depended on grpc metadata, not the header. Actually we pass iOS version at metadata parameter. And as far as i know Nginx for example cannot do this. We have no k8s or something, just the simple API daemon listening on some port.
authConf := viper.GetStringMapString("auth")
creds, err := credentials.NewServerTLSFromFile(authConf["certfile"], authConf["keyfile"])
if err != nil {
panic(err)
}
lis, err := net.Listen("tcp", ":"+viper.GetString("port"))
if err != nil {
panic(err)
}
答案1
得分: 1
你可以使用envoy，它是一个类似于NginX的代理。
它支持gRPC（可以查看grpc-web），允许你定义多个路由并将流量重定向到不同的主机。我正在使用它根据URL（其中包含gRPC包/函数名称）将流量重定向到不同的服务，但也可以通过头部或元数据进行相同的操作。
在StackOverflow上提供一个实际的envoy配置超出了范围。
英文:
You can use envoy, which is a proxy just like NginX.
It has support for gRPC (take a look at grpc-web), which allows you to define multiple routes and redirect traffic to different hosts. I'm using it to redirect to different services based on the URL (which contains the gRPC package/function name), but it should also be possible to do the same with header or meta data.
Providing an actual envoy configuration that does this is out-of-scope on StackOverflow though.
通过集体智慧和协作来改善编程学习和解决问题的方式。致力于成为全球开发者共同参与的知识库，让每个人都能够通过互相帮助和分享经验来进步。
评论