Upgrade to Gradle 4.0 and Checkstyle 8.0

spring-integration-hazelcast/build.gradle

@@ -3,8 +3,8 @@ buildscript {
 		maven { url 'https://repo.spring.io/plugins-release' }
 	}
 	dependencies {
-		classpath 'io.spring.gradle:dependency-management-plugin:1.0.0.RC2'
-		classpath 'io.spring.gradle:spring-io-plugin:0.0.6.RELEASE'
+		classpath 'io.spring.gradle:dependency-management-plugin:1.0.2.RELEASE'
+		classpath 'io.spring.gradle:spring-io-plugin:0.0.8.RELEASE'
 	}
 }
 
@@ -14,7 +14,7 @@ plugins {
 	id 'idea'
 	id 'jacoco'
 	id 'checkstyle'
-	id 'org.sonarqube' version '2.1'
+	id 'org.sonarqube' version '2.5'
 }
 
 description = 'Spring Integration Hazelcast Support'
@@ -53,9 +53,9 @@ compileTestJava {
 }
 
 ext {
-	hazelcastVersion = '3.7.4'
-	slf4jVersion = '1.7.22'
-	springIntegrationVersion = '4.3.6.RELEASE'
+	hazelcastVersion = '3.8.3'
+	slf4jVersion = '1.7.25'
+	springIntegrationVersion = '4.3.10.RELEASE'
 
 	idPrefix = 'hazelcast'
 
@@ -78,12 +78,12 @@ sourceSets {
 }
 
 jacoco {
-	toolVersion = "0.7.8"
+	toolVersion = "0.7.9"
 }
 
 checkstyle {
 	configFile = file("$rootDir/src/checkstyle/checkstyle.xml")
-	toolVersion = "6.16.1"
+	toolVersion = "8.0"
 }
 
 // enable all compiler warnings; individual projects may customize further
@@ -116,7 +116,7 @@ jacocoTestReport {
 	reports {
 		xml.enabled false
 		csv.enabled false
-		html.destination "${buildDir}/reports/jacoco/html"
+		html.destination file("${buildDir}/reports/jacoco/html")
 	}
 }
 

spring-integration-hazelcast/gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
-#Mon Jan 23 13:52:31 EST 2017
+#Fri Jul 07 17:27:53 EDT 2017
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-3.3-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-4.0-bin.zip

spring-integration-hazelcast/gradlew

@@ -33,11 +33,11 @@ DEFAULT_JVM_OPTS=""
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD="maximum"
 
-warn ( ) {
+warn () {
     echo "$*"
 }
 
-die ( ) {
+die () {
     echo
     echo "$*"
     echo
@@ -155,7 +155,7 @@ if $cygwin ; then
 fi
 
 # Escape application args
-save ( ) {
+save () {
     for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
     echo " "
 }

spring-integration-hazelcast/src/checkstyle/checkstyle-suppressions.xml

@@ -4,8 +4,6 @@
     "http://www.puppycrawl.com/dtds/suppressions_1_1.dtd">
 <suppressions>
 	<suppress files="package-info\.java" checks=".*" />
-	<suppress files="[\\/]test[\\/]" checks="RequireThis" />
-	<suppress files="[\\/]test[\\/]" checks="FinalClass" />
 	<suppress files="[\\/]test[\\/]" checks="AvoidStaticImport" />
 	<suppress files="[\\/]test[\\/]" checks="InnerTypeLast" />
 	<suppress files="[\\/]test[\\/]" checks="Javadoc*" />

spring-integration-hazelcast/src/main/java/org/springframework/integration/hazelcast/config/xml/HazelcastClusterMonitorInboundChannelAdapterParser.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2015 the original author or authors.
+ * Copyright 2015-2017 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -26,7 +26,6 @@ import org.springframework.beans.factory.xml.AbstractSingleBeanDefinitionParser;
 import org.springframework.beans.factory.xml.ParserContext;
 import org.springframework.integration.config.xml.IntegrationNamespaceUtils;
 import org.springframework.integration.hazelcast.inbound.HazelcastClusterMonitorMessageProducer;
-
 import org.springframework.util.StringUtils;
 
 /**

spring-integration-hazelcast/src/main/java/org/springframework/integration/hazelcast/leader/LeaderInitiator.java

@@ -133,7 +133,7 @@ public class LeaderInitiator implements SmartLifecycle, DisposableBean, Applicat
 	 * @param leaderEventPublisher the event publisher
 	 */
 	public void setLeaderEventPublisher(LeaderEventPublisher leaderEventPublisher) {
-		Assert.notNull(leaderEventPublisher);
+		Assert.notNull(leaderEventPublisher, "'leaderEventPublisher' must not be null");
 		this.leaderEventPublisher = leaderEventPublisher;
 		this.customPublisher = true;
 	}