Bump Ktor to 3.0.0 and Kotlin to 2.0.20 (#197)

* Bump Ktor to 3.0.0 and Kotlin to 2.0.20

* Migrate to Ktor 3.0.0

* Fix tests

* Remove comment

* Downgrade version of logback

Author: Stexxe

chat/build.gradle

@@ -3,11 +3,13 @@ buildscript {
         mavenCentral()
     }
     dependencies {
-        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.9.21"
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:2.0.20"
+        classpath "org.jetbrains.kotlin:kotlin-serialization:2.0.20"
     }
 }
 
 apply plugin: 'kotlin-multiplatform'
+apply plugin: 'org.jetbrains.kotlin.plugin.serialization'
 
 kotlin {
     targets {
@@ -28,14 +30,14 @@ kotlin {
 
     sourceSets.each {
         it.dependencies {
-            implementation(project.dependencies.enforcedPlatform("io.ktor:ktor-bom:2.3.12"))
+            implementation(project.dependencies.enforcedPlatform("io.ktor:ktor-bom:3.0.0"))
         }
     }
 
     sourceSets {
         backendMain {
             dependencies {
-                implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.9.21"
+                implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:2.0.20"
                 implementation "io.ktor:ktor-server-netty"
                 implementation "io.ktor:ktor-server-websockets"
                 implementation "io.ktor:ktor-server-call-logging"
@@ -70,6 +72,7 @@ repositories {
 
 tasks.named("backendProcessResources").configure {
     dependsOn("frontendBrowserProductionWebpack")
+    dependsOn("frontendBrowserDistribution")
 }
 
 tasks.register("run", JavaExec) {

chat/src/backendMain/kotlin/ChatApplication.kt

@@ -4,15 +4,17 @@ import io.ktor.server.application.*
 import io.ktor.server.engine.*
 import io.ktor.server.http.content.*
 import io.ktor.server.netty.*
-import io.ktor.server.plugins.callloging.*
+import io.ktor.server.plugins.calllogging.CallLogging
 import io.ktor.server.plugins.defaultheaders.*
 import io.ktor.server.routing.*
 import io.ktor.server.sessions.*
 import io.ktor.server.websocket.*
 import io.ktor.util.*
 import io.ktor.websocket.*
 import kotlinx.coroutines.channels.*
-import java.time.*
+import kotlinx.serialization.Serializable
+import kotlin.time.Duration
+import kotlin.time.Duration.Companion.minutes
 
 /**
  * An entry point of the application.
@@ -61,7 +63,7 @@ class ChatApplication {
         // This installs the WebSockets plugin to be able to establish a bidirectional configuration
         // between the server and the client
         install(WebSockets) {
-            pingPeriod = Duration.ofMinutes(1)
+            pingPeriod = 1.minutes
         }
         // This enables the use of sessions to keep information between requests/refreshes of the browser.
         install(Sessions) {
@@ -121,19 +123,14 @@ class ChatApplication {
             }
 
             // This defines a block of static resources for the '/' path (since no path is specified and we start at '/')
-            static {
-                // This marks index.html from the 'web' folder in resources as the default file to serve.
-                defaultResource("index.html", "web")
-                // This serves files from the 'web' folder in the application resources.
-                resources("web")
-            }
-
+            staticResources("", "web")
         }
     }
 
     /**
      * A chat session is identified by a unique nonce ID. This nonce comes from a secure random source.
      */
+    @Serializable
     data class ChatSession(val id: String)
 
     /**

chat/src/backendTest/kotlin/ChatApplicationTest.kt

@@ -1,7 +1,7 @@
 package io.ktor.samples.chat.backend
 
 import io.ktor.client.plugins.websocket.*
-import io.ktor.server.application.*
+import io.ktor.server.config.ApplicationConfig
 import io.ktor.server.testing.*
 import io.ktor.websocket.*
 import kotlin.test.*
@@ -18,6 +18,9 @@ class ChatApplicationTest {
         // First, we create a [TestApplicationEngine] that includes the module [Application.main],
         // this executes that function and thus installs all the plugins and routes to this test application.
         testApplication {
+            environment {
+                config = ApplicationConfig(null)
+            }
             // Keeps a log array that will hold all the events we want to check later at once.
             val log = arrayListOf<String>()
 
@@ -57,6 +60,9 @@ class ChatApplicationTest {
     fun testDualConversation() {
         // Creates the [TestApplicationEngine] with the [Application::main] module. Check the previous test for more details.
         testApplication {
+            environment {
+                config = ApplicationConfig(null)
+            }
             // Sets to hold the messages from each children.
             // Since this is multithreaded and socket-related.
             // The order might change in each run, so we use a Set instead of a List to check that the messages

chat/src/frontendMain/kotlin/main.kt

@@ -30,6 +30,7 @@ fun main() {
     })
 }
 
+@OptIn(DelicateCoroutinesApi::class)
 suspend fun initConnection(wsClient: WsClient) {
     try {
         wsClient.connect()

client-mpp/build.gradle

@@ -5,7 +5,7 @@ buildscript {
         gradlePluginPortal()
     }
     dependencies {
-        classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:1.9.21")
+        classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:2.0.20")
         classpath("com.android.tools.build:gradle:7.0.4")
     }
 }

client-mpp/shared/build.gradle

@@ -19,7 +19,7 @@ kotlin {
 
     sourceSets.each {
         it.dependencies {
-            implementation(project.dependencies.enforcedPlatform("io.ktor:ktor-bom:2.3.12"))
+            implementation(project.dependencies.enforcedPlatform("io.ktor:ktor-bom:3.0.0"))
         }
     }
 

client-multipart/build.gradle

@@ -4,8 +4,8 @@ buildscript {
         gradlePluginPortal()
     }
     dependencies {
-        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.9.21"
-        classpath "io.ktor.plugin:plugin:2.3.12"
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:2.0.20"
+        classpath "io.ktor.plugin:plugin:3.0.0"
     }
 }
 
@@ -27,7 +27,7 @@ repositories {
 }
 
 dependencies {
-    implementation 'org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.9.21'
+    implementation 'org.jetbrains.kotlin:kotlin-stdlib-jdk8:2.0.20'
     implementation "io.ktor:ktor-server-html-builder"
     implementation 'ch.qos.logback:logback-classic:1.4.6'
     implementation 'io.ktor:ktor-server-netty-jvm'

client-tools/build.gradle

@@ -4,8 +4,8 @@ buildscript {
         gradlePluginPortal()
     }
     dependencies {
-        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.9.21"
-        classpath "io.ktor.plugin:plugin:2.3.12"
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:2.0.20"
+        classpath "io.ktor.plugin:plugin:3.0.0"
     }
 }
 
@@ -27,7 +27,7 @@ repositories {
 }
 
 dependencies {
-    implementation 'org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.9.21'
+    implementation 'org.jetbrains.kotlin:kotlin-stdlib-jdk8:2.0.20'
     implementation "io.ktor:ktor-server-html-builder"
     implementation 'ch.qos.logback:logback-classic:1.4.6'
     implementation 'io.ktor:ktor-server-netty-jvm'

di-kodein/build.gradle.kts

@@ -2,9 +2,9 @@ val kotlin_version: String by project
 val logback_version: String by project
 
 plugins {
-    kotlin("jvm") version "1.9.21"
-    id("io.ktor.plugin") version "2.3.12"
-    kotlin("plugin.serialization") version "1.9.21"
+    kotlin("jvm") version "2.0.20"
+    id("io.ktor.plugin") version "3.0.0"
+    kotlin("plugin.serialization") version "2.0.20"
 }
 
 application {
@@ -23,6 +23,6 @@ dependencies {
     implementation("io.ktor:ktor-server-html-builder")
     implementation("org.kodein.di:kodein-di-jvm:7.17.0")
     implementation("ch.qos.logback:logback-classic:$logback_version")
-    testImplementation("io.ktor:ktor-server-tests-jvm")
+    testImplementation("io.ktor:ktor-server-test-host-jvm")
     testImplementation("org.jetbrains.kotlin:kotlin-test-junit:$kotlin_version")
 }

di-kodein/gradle.properties

@@ -1,3 +1,3 @@
-kotlin_version=1.9.21
-logback_version=1.2.11
+kotlin_version=2.0.20
+logback_version=1.3.14
 kotlin.code.style=official