Hi All, I am new to http4k, some nice concepts. I ...

# http4k

[David Beer]

Hi All, I am new to http4k, some nice concepts. I need to be able to configure the server (Jetty) from ENV variables. I know of being able to inject the port via ENV etc. I need to be able start the server from a custom config and the add the routes which extend RoutingHttpHnadler. My issue is getting the ServerConfig right so that when I start the server it stays running. What I am looking for is a full blown example rather than code snippets.

This is my ServerConfig:

class JettyConfig(private val port: Int) : ServerConfig {

    override fun toServer(http: HttpHandler): Http4kServer {
        val server = Server().apply {
            insertHandler(http.toJettyHandler())
        }

        return object : Http4kServer {
            override fun start(): Http4kServer = apply { server.start() }

            override fun stop(): Http4kServer = apply { server.stop() }

            override fun port(): Int = port
        }
    }


}

And Called using App.app.asServer(JettyConfig(App.port)).start()

[dave]

You shouldn't need to create your own ServerConfig unless you really want something niche. Just plug into the version you want by importing http4k-server-xyz
the module.

There are plenty of examples in here, including using http4k-config for typesafe configuration:

https://github.com/http4k/examples
https://github.com/http4k/http4k-by-example

[DanielZ]

indirectly related question - when I need more server specific metrics for opentelemetry do I need then a customized ServerConfig or can I solve that differently?

[dave]

I suspect you'll need something customised

[DanielZ]

to bad 😄 but thanks anyways - sometimes it's hard when you got compared with other teams simply using spring 😞
they don't understand the benefits we gained 🚀

[dave]

@DanielZ I guess that understanding your software isn't too trendy nowadays.. 😂

[David Beer]

I have managed to achieve most of want I needed from the TDD example. Again not the best, is ther a blog post tutorial that goes with it.

[David Beer]

It still seems like we need a better tutorial example for ServerConfig usage.

[dave]

https://www.http4k.org/howto/customise_a_server_backend/ work?

[dave]

What do you need a custom server for? it's fairly rare that we need to create one, especially when just starting out