change Server to engineMain with config file (closes #3)

server/src/main/kotlin/net/keinekekse/app/Application.kt

@@ -2,21 +2,26 @@ package net.keinekekse.app
 
 import io.github.oshai.kotlinlogging.KotlinLogging
 import io.ktor.server.application.*
-import io.ktor.server.engine.*
-import io.ktor.server.netty.*
 import net.keinekekse.app.server.VERSION
+import net.keinekekse.app.server.config.configureRouting
 import net.keinekekse.app.server.config.configureSecurity
 
 private val logger = KotlinLogging.logger {}
 
-fun main() {
-//    embeddedServer(Netty, port = SERVER_PORT, host = "0.0.0.0", module = Application::module)
-    logger.debug { "\n**\n** Starting  ${VERSION.displayName} - ${VERSION.description} ${VERSION.fullVersion}\n**" }
-    embeddedServer(Netty, port = 7770, host = "0.0.0.0", module = Application::module)
-        .start(wait = true)
-}
+fun main(args: Array<String>): Unit = io.ktor.server.netty.EngineMain.main(args)
+
+//fun main() {
+////    embeddedServer(Netty, port = SERVER_PORT, host = "0.0.0.0", module = Application::module)
+//    // environment.config.propertyOrNull("ktor.environment")?.getString()
+//
+//    logger.debug { "\n**\n** Starting  ${VERSION.displayName} - ${VERSION.description} ${VERSION.fullVersion}\n**" }
+//    embeddedServer(Netty, port = 7770, host = "0.0.0.0", module = Application::module)
+//        .start(wait = true)
+//}
 
 fun Application.module() {
-    configureSecurity()
+    logger.info { "\n**\n** Starting  ${VERSION.displayName} - ${VERSION.description} ${VERSION.fullVersion}\n**" }
 
+    configureSecurity()
+    configureRouting()
 }

server/src/main/kotlin/net/keinekekse/app/server/Version.kt

@@ -3,14 +3,14 @@ package net.keinekekse.app.server
 import net.keinekekse.version.Version
 
 object VERSION: Version {
-    override val version = "0.1.0-beta.1+build.21"
-    override val fullVersion = "0.1.0-beta.1+build.21"
+    override val version = "0.1.0-beta.1+build.25"
+    override val fullVersion = "0.1.0-beta.1+build.25"
     override val major = 0
     override val minor = 1
     override val patch = 0
     override val preRelease = "beta.1"
-    override val buildMetadata = "build.21"
-    override val buildDate = "2026-02-06T23:11:27.778805Z"
+    override val buildMetadata = "build.25"
+    override val buildDate = "2026-02-07T16:52:53.281643Z"
     override val displayName = "kAS"
     override val copyright = "Copyright (c) 2026 Hartmut Bauer"
     override val name = "server"

server/src/main/kotlin/net/keinekekse/app/server/config/routing.kt

@@ -0,0 +1,26 @@
+package net.keinekekse.app.server.config
+
+import io.github.oshai.kotlinlogging.KotlinLogging
+import io.ktor.server.application.*
+import io.ktor.server.auth.*
+import io.ktor.server.response.*
+import io.ktor.server.routing.*
+import net.keinekekse.app.server.VERSION
+
+private val logger = KotlinLogging.logger {}
+
+fun Application.configureRouting() {
+    routing {
+        authenticate("auth-KC") {
+            get("/") {
+                val principal = call.principal<AppPrincipal>()
+                call.respondText("user: ${principal?.userId}")
+            }
+
+            get("/test") {
+                val principal = call.principal<AppPrincipal>()
+                call.respondText("Ktor ${VERSION.displayName} ${VERSION.fullVersion} - principal=${principal?.name}")
+            }
+        }
+    }
+}

server/src/main/kotlin/net/keinekekse/app/server/config/security.kt

@@ -6,32 +6,44 @@ import io.ktor.http.*
 import io.ktor.server.application.*
 import io.ktor.server.auth.*
 import io.ktor.server.auth.jwt.*
+import io.ktor.server.config.*
 import io.ktor.server.response.*
-import io.ktor.server.routing.*
-import net.keinekekse.app.server.VERSION
 import java.net.URI
 
 private val logger = KotlinLogging.logger {}
 
 fun Application.configureSecurity() {
 
-    // TODO die Werte müssen aus der Config kommen
+    fun getFromConfig(key: String): String {
+        try {
+            return environment.config.property("ktor.conf.$key").getString()
+        } catch (e: ApplicationConfigurationException) {
+            // ohne die Konfig-Params geht nix (und defaults sind hier sinnlos), hier ist nur noch Abbruch möglich
+            throw IllegalStateException(
+                "Configuration key '$key' not found, server start aborted.",
+                e
+            )
+        }
+    }
 
     // Kommunikation funktioniert nur im internen Containernetzwerk,
     // d.h. Container- bzw. Pod-Name + interner Port
-    val keycloakInternal = "http://kec:8080/realms"
-    val keycloak = "https://kec.keinekekse.net/realms"
-    val realm = "app-server-realm"
-    val clientId = "pkce-book-app"
-    val certUrl = "$keycloakInternal/$realm/protocol/openid-connect/certs"
-    val issuer = "$keycloak/$realm"
+    val keycloakInternalUrl = getFromConfig("keycloakInternalUrl")
+    val keycloakUrl = getFromConfig("keycloakUrl")
+    val keycloakRealm = getFromConfig("keycloakRealm")
+    val keycloakClientId = getFromConfig("keycloakClientId")
+    val keycloakCertUrl = getFromConfig("keycloakCertUrl")
+
+    val certUrl = "$keycloakInternalUrl/$keycloakRealm/$keycloakCertUrl"
+    val issuer = "$keycloakUrl/$keycloakRealm"
+
     authentication {
         jwt("auth-KC") {
             verifier(
                 UrlJwkProvider(URI(certUrl).toURL()), issuer
             ) {
                 withAudience("account")
-                withClaim("azp", clientId)
+                withClaim("azp", keycloakClientId)
             }
             challenge { _, _ ->
                 call.respond(HttpStatusCode.Unauthorized, "Token is not valid or has expired")
@@ -42,17 +54,4 @@ fun Application.configureSecurity() {
         }
     }
 
-    routing {
-        authenticate("auth-KC") {
-            get("/") {
-                val principal = call.principal<AppPrincipal>()
-                call.respondText("Ktor ${VERSION.displayName} ${VERSION.fullVersion} - principal=${principal?.name}")
-            }
-
-            get("/test") {
-                val principal = call.principal<AppPrincipal>()
-                call.respondText("user: ${principal?.userId}")
-            }
-        }
-    }
 }

server/src/main/resources/application.conf

@@ -0,0 +1,35 @@
+ktor {
+    deployment {
+        # alle Server
+        port = 7770
+        host = 0.0.0.0
+        # defaults * 2
+        connectionGroupSize = 4
+        workerGroupSize = 10
+        callGroupSize = 20
+        shutdownGracePeriod = 2000
+        shutdownTimeout = 3000
+        # Netty defaults
+        maxInitialLineLength = 4096
+        maxHeaderSize = 8192
+        maxChunkSize = 8192
+    }
+    application {
+        # ApplicationKt.module() übernimmt die Konfiguration
+        modules = [ net.keinekekse.app.ApplicationKt.module ]
+    }
+    conf {
+        # eigene Parameter -> ktor.conf.<name>
+        #
+        keycloakInternalUrl = "http://kec:8080/realms"
+        keycloakUrl = "https://kec.keinekekse.net/realms"
+        keycloakRealm = "app-server-realm"
+        keycloakClientId = "pkce-book-app"
+        keycloakCertUrl = "protocol/openid-connect/certs"
+        # DB-Params werden vom Container als env vars gesetzt
+        dbHost = ${DB_HOST}
+        dbPort = ${DB_PORT}
+        dbUser = ${DB_USER}
+        dbPassword = ${DB_PASSWORD}
+    }
+}