org.http4k.routing.RoutingHttpHandler.kt Maven / Gradle / Ivy

Go to download
package org.http4k.routing

import org.http4k.core.Filter
import org.http4k.core.HttpHandler
import org.http4k.core.Method
import org.http4k.core.UriTemplate

/**
 * Composite HttpHandler which can potentially service many different URL patterns. Should
 * return a 404 Response if it cannot service a particular Request.
 *
 * Note that generally there should be no reason for the API user to implement this interface over and above the
 * implementations that already exist. The interface is public only because we have not found a way to hide it from
 * the API user in an API-consistent manner.
 */
interface RoutingHttpHandler : Router, HttpHandler {
    override fun withFilter(new: Filter): RoutingHttpHandler
    override fun withBasePath(new: String): RoutingHttpHandler
}

class PathMethod(private val path: String, private val method: Method) {
    infix fun to(action: HttpHandler): RoutingHttpHandler =
        when (action) {
            is StaticRoutingHttpHandler -> method.asRouter().bind(action.withBasePath(path))
            is RouterBasedHttpHandler -> action.copy(router = method.asRouter().and(action.withBasePath(path)))
            else -> RouterBasedHttpHandler(method.asRouter().and(TemplateRouter(UriTemplate.from(path), action)))
        }
}