Migrate to Kotlin

build.gradle.kts

@@ -1,8 +1,9 @@
 import org.gradle.api.tasks.wrapper.Wrapper.DistributionType
+import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
 
 plugins {
     `maven-publish`
-    id("java-gradle-plugin")
+    `kotlin-dsl`
     id("com.gradle.plugin-publish") version "0.9.7"
     id("org.shipkit.java") version "2.3.4"
     id("org.shipkit.gradle-plugin") version "2.3.4"
@@ -19,6 +20,16 @@ java {
     targetCompatibility = JavaVersion.VERSION_1_7
 }
 
+tasks.configureEach<KotlinCompile> {
+    kotlinOptions {
+        jvmTarget = "1.6"
+    }
+}
+
+kotlinDslPluginOptions {
+    experimentalWarning.set(false)
+}
+
 dependencies {
     implementation("com.amazonaws:aws-java-sdk-s3:1.11.751")
 

gradle.properties

@@ -0,0 +1,5 @@
+org.gradle.parallel=true
+# See https://github.com/gradle/gradle/pull/11358 , https://issues.apache.org/jira/browse/INFRA-14923
+# repository.apache.org does not yet support .sha256 and .sha512 checksums
+systemProp.org.gradle.internal.publish.checksums.insecure=true
+kotlin.parallel.tasks.in.project=true

src/main/kotlin/ch/myniva/gradle/caching/s3/AwsS3BuildCache.kt

@@ -0,0 +1,30 @@
+/*
+ * Copyright 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.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package ch.myniva.gradle.caching.s3
+
+import org.gradle.caching.configuration.AbstractBuildCache
+
+open class AwsS3BuildCache : AbstractBuildCache() {
+    var region: String? = null
+    var bucket: String? = null
+    var path: String? = null
+    var isReducedRedundancy = true
+    var endpoint: String? = null
+    var headers: Map<String?, String?>? = null
+    var awsAccessKeyId: String? = null
+    var awsSecretKey: String? = null
+    var sessionToken: String? = null
+}