Main to 3.0; SF 6.0; JDK 17

Initial Commit for Spring Framework 6.0/JDK 17

* PR review comments; build is green.

Fix Spring Data version; fix deprecations

Fix checkstyle

Add mavenCentral() for GE Plugin

.github/workflows/pr-build-workflow.yml

@@ -12,10 +12,10 @@ jobs:
 
     steps:
       - uses: actions/checkout@v2
-      - name: Set up JDK 11
+      - name: Set up JDK 17
         uses: actions/setup-java@v1
         with:
-          java-version: 11
+          java-version: 17
 
       - name: Run Gradle
         uses: burrunan/gradle-cache-action@v1

build.gradle

@@ -2,7 +2,7 @@ buildscript {
 	ext.kotlinVersion = '1.5.31'
 	repositories {
 		mavenCentral()
-		maven { url 'https://plugins.gradle.org/m2' }
+		gradlePluginPortal()
 		maven { url 'https://repo.spring.io/plugins-release' }
 	}
 	dependencies {
@@ -44,6 +44,11 @@ ext {
 	linkScmDevConnection = 'git@github.com:spring-projects/spring-kafka.git'
 	docResourcesVersion = '0.2.5'
 
+	javadocLinks = [
+		'https://docs.oracle.com/en/java/javase/17/docs/api/',
+		'https://docs.spring.io/spring-framework/docs/current/javadoc-api/'
+	] as String[]
+
 
 	if (gitPresent) {
 		modifiedFiles =
@@ -56,7 +61,7 @@ ext {
 	hamcrestVersion = '2.2'
 	hibernateValidationVersion = '6.2.0.Final'
 	jacksonBomVersion = '2.13.1'
-	jaywayJsonPathVersion = '2.4.0'
+	jaywayJsonPathVersion = '2.6.0'
 	junit4Version = '4.13.2'
 	junitJupiterVersion = '5.8.2'
 	kafkaVersion = '3.0.0'
@@ -65,10 +70,10 @@ ext {
 	mockitoVersion = '4.0.0'
 	reactorVersion = '2020.0.14'
 	scalaVersion = '2.13'
-	springBootVersion = '2.5.7' // docs module
-	springDataVersion = '2021.1.0'
+	springBootVersion = '2.6.1-SNAPSHOT' // docs module
+	springDataVersion = '2022.1.0-SNAPSHOT'
 	springRetryVersion = '1.3.1'
-	springVersion = '5.3.14'
+	springVersion = '6.0.0-SNAPSHOT'
 	zookeeperVersion = '3.6.3'
 
 	idPrefix = 'kafka'
@@ -136,25 +141,25 @@ subprojects { subproject ->
 	}
 
 	compileJava {
-		sourceCompatibility = 1.8
-		targetCompatibility = 1.8
+		sourceCompatibility = 17
+		targetCompatibility = 17
 	}
 
 	compileTestJava {
-		sourceCompatibility = 11
+		sourceCompatibility = 17
 		options.encoding = 'UTF-8'
 	}
 
 	compileTestKotlin {
 		kotlinOptions {
-			jvmTarget = '11'
+			jvmTarget = '16'
 		}
 	}
 
 	eclipse.project.natures += 'org.springframework.ide.eclipse.core.springnature'
 
 	jacoco {
-		toolVersion = '0.8.6'
+		toolVersion = '0.8.7'
 	}
 
 	// dependencies that are common across all java projects
@@ -291,6 +296,11 @@ subprojects { subproject ->
 		}
 	}
 
+	tasks.withType(Javadoc) {
+		options.addBooleanOption('Xdoclint:syntax', true) // only check syntax with doclint
+		options.addBooleanOption('Werror', true) // fail build on Javadoc warnings
+    }
+
 }
 
 project ('spring-kafka') {
@@ -374,7 +384,7 @@ project ('spring-kafka-docs') {
 
 	compileKotlin {
 		kotlinOptions {
-			jvmTarget = '1.8'
+			jvmTarget = '16'
 		}
 	}
 
@@ -485,10 +495,17 @@ task api(type: Javadoc) {
 	group = 'Documentation'
 	description = 'Generates aggregated Javadoc API documentation.'
 	title = "${rootProject.description} ${version} API"
-	options.memberLevel = org.gradle.external.javadoc.JavadocMemberLevel.PROTECTED
-	options.author = true
-	options.header = rootProject.description
-	options.overview = 'src/api/overview.html'
+	options {
+		encoding = 'UTF-8'
+		memberLevel = org.gradle.external.javadoc.JavadocMemberLevel.PROTECTED
+		author = true
+		header = rootProject.description
+		use = true
+		overview = 'src/api/overview.html'
+		splitIndex = true
+		links(project.ext.javadocLinks)
+		addBooleanOption('Xdoclint:syntax', true) // only check syntax with doclint
+	}
 
 	source subprojects.collect { project ->
 		project.sourceSets.main.allJava

gradle.properties

@@ -1,4 +1,5 @@
-version=2.8.2-SNAPSHOT
+version=3.0.0-SNAPSHOT
+org.gradle.jvmargs=-Xmx1536M -Dfile.encoding=UTF-8
 org.gradle.caching=true
 org.gradle.parallel=true
 kotlin.stdlib.default.dependency=false

settings.gradle

@@ -1,5 +1,6 @@
 pluginManagement {
 	repositories {
+		mavenCentral()
 		gradlePluginPortal()
 		maven { url 'https://repo.spring.io/plugins-release' }
 	}

spring-kafka-test/src/test/java/org/springframework/kafka/test/hamcrest/KafkaMatchersTests.java

@@ -23,7 +23,10 @@ import static org.springframework.kafka.test.hamcrest.KafkaMatchers.hasPartition
 import static org.springframework.kafka.test.hamcrest.KafkaMatchers.hasTimestamp;
 import static org.springframework.kafka.test.hamcrest.KafkaMatchers.hasValue;
 
+import java.util.Optional;
+
 import org.apache.kafka.clients.consumer.ConsumerRecord;
+import org.apache.kafka.common.header.internals.RecordHeaders;
 import org.apache.kafka.common.record.TimestampType;
 import org.junit.jupiter.api.Test;
 
@@ -36,8 +39,8 @@ public class KafkaMatchersTests {
 
 	@Test
 	public void testKeyMatcher() {
-		ConsumerRecord<String, String> record = new ConsumerRecord<>("topic", 0, 10,
-				1487694048607L, TimestampType.CREATE_TIME, 123L, 2, 3, "key1", "value1");
+		ConsumerRecord<String, String> record = new ConsumerRecord<>("topic", 0, 10, 1487694048607L,
+				TimestampType.CREATE_TIME, 2, 3, "key1", "value1", new RecordHeaders(), Optional.empty());
 		assertThat(record, hasKey("key1"));
 		assertThat(record, hasValue("value1"));
 		assertThat(record, hasPartition(0));
@@ -47,8 +50,8 @@ public class KafkaMatchersTests {
 
 	@Test
 	public void noMatchOnTimestamp() {
-		ConsumerRecord<String, String> record = new ConsumerRecord<>("topic", 0, 10,
-				1487694048607L, TimestampType.CREATE_TIME, 123L, 2, 3, "key1", "value1");
+		ConsumerRecord<String, String> record = new ConsumerRecord<>("topic", 0, 10, 1487694048607L,
+				TimestampType.CREATE_TIME, 2, 3, "key1", "value1", new RecordHeaders(), Optional.empty());
 
 		assertThatExceptionOfType(AssertionError.class).isThrownBy(() -> assertThat(record, hasTimestamp(123L)))
 				.withMessageContaining(