chore: bump gradle and fix version loading

build.gradle

@@ -14,9 +14,6 @@
  * limitations under the License.
  */
 
-import org.gradle.util.DistributionLocator
-import org.gradle.util.GradleVersion
-
 plugins {
 
     // https://docs.gradle.org/current/userguide/java_library_plugin.html
@@ -40,25 +37,33 @@ repositories {
     mavenCentral()
 }
 
+group = "io.aiven"
+
 java {
     sourceCompatibility = JavaVersion.VERSION_11
     targetCompatibility = JavaVersion.VERSION_11
-}
 
+    withJavadocJar()
+    withSourcesJar()
+}
 
 wrapper {
     distributionType = 'ALL'
     doLast {
-        final DistributionLocator locator = new DistributionLocator()
-        final GradleVersion version = GradleVersion.version(wrapper.gradleVersion)
-        final URI distributionUri = locator.getDistributionFor(version, wrapper.distributionType.name().toLowerCase(Locale.ENGLISH))
-        final URI sha256Uri = new URI(distributionUri.toString() + ".sha256")
-        final String sha256Sum = new String(sha256Uri.toURL().bytes)
-        wrapper.getPropertiesFile() << "distributionSha256Sum=${sha256Sum}\n"
+        def sha256Sum = new String(new URL("${distributionUrl}.sha256").bytes)
+        propertiesFile << "distributionSha256Sum=${sha256Sum}\n"
         println "Added checksum to wrapper properties"
     }
 }
 
+ext {
+    kafkaVersion = "2.2.0"
+    slf4jVersion = "1.7.36"
+    elasticSearchVersion = "2.4.1"
+    luceneVersion = "5.5.2"
+    jestVersion = "6.3.1"
+}
+
 compileJava {
     options.compilerArgs = ['-Xlint:all', '-Werror']
 }
@@ -72,6 +77,32 @@ jacoco {
     toolVersion = "0.8.7"
 }
 
+dependencies {
+    compileOnly "org.apache.kafka:connect-api:$kafkaVersion"
+    compileOnly "org.apache.kafka:connect-json:$kafkaVersion"
+
+    implementation "org.slf4j:slf4j-api:$slf4jVersion"
+    implementation "io.searchbox:jest:$jestVersion"
+
+    testImplementation("junit:junit:4.13.2") {
+        exclude group: 'org.hamcrest', module: 'hamcrest-core'
+    }
+    testImplementation "org.hamcrest:hamcrest-all:1.3"
+    testImplementation "org.mockito:mockito-core:5.4.0"
+    testImplementation "org.mockito:mockito-all:1.10.19"
+
+    testImplementation "org.apache.kafka:connect-api:$kafkaVersion"
+    testImplementation "org.apache.kafka:connect-json:$kafkaVersion"
+    testImplementation "org.apache.lucene:lucene-test-framework:$luceneVersion"
+    testImplementation "com.fasterxml.jackson.core:jackson-core:2.15.2"
+    testImplementation "com.fasterxml.jackson.core:jackson-databind:2.15.2"
+    testImplementation "com.fasterxml.jackson.core:jackson-annotations:2.15.2"
+    testImplementation "org.elasticsearch:elasticsearch:$elasticSearchVersion:tests"
+    testImplementation "org.elasticsearch:elasticsearch:$elasticSearchVersion"
+    testImplementation "org.apache.lucene:lucene-expressions:$luceneVersion"
+    testRuntimeOnly "org.slf4j:slf4j-log4j12:$slf4jVersion"
+}
+
 distributions {
     main {
         contents {
@@ -122,46 +153,21 @@ publishing {
     }
 }
 
-ext {
-    kafkaVersion = "2.2.0"
-    slf4jVersion = "1.7.36"
-    elasticSearchVersion = "2.4.1"
-    luceneVersion = "5.5.2"
-    jestVersion = "6.3.1"
-}
-
 processResources {
     filesMatching('elasticsearch-connector-for-apache-kafka-version.properties') {
         expand(version: version)
     }
 }
 
-dependencies {
-    compileOnly "org.apache.kafka:connect-api:$kafkaVersion"
-    compileOnly "org.apache.kafka:connect-json:$kafkaVersion"
-
-    implementation "org.slf4j:slf4j-api:$slf4jVersion"
-    implementation "io.searchbox:jest:$jestVersion"
-
-    testImplementation("junit:junit:4.13.2") {
-        exclude group: 'org.hamcrest', module: 'hamcrest-core'
+jar {
+    manifest {
+        attributes(
+                'Version': "${project.version}"
+        )
     }
-    testImplementation "org.hamcrest:hamcrest-all:1.3"
-    testImplementation "org.mockito:mockito-core:5.11.0"
-    testImplementation "org.mockito:mockito-all:1.10.19"
-
-    testImplementation "org.apache.kafka:connect-api:$kafkaVersion"
-    testImplementation "org.apache.kafka:connect-json:$kafkaVersion"
-    testImplementation "org.apache.lucene:lucene-test-framework:$luceneVersion"
-    testImplementation "com.fasterxml.jackson.core:jackson-core:2.15.2"
-    testImplementation "com.fasterxml.jackson.core:jackson-databind:2.15.2"
-    testImplementation "com.fasterxml.jackson.core:jackson-annotations:2.15.2"
-    testImplementation "org.elasticsearch:elasticsearch:$elasticSearchVersion:tests"
-    testImplementation "org.elasticsearch:elasticsearch:$elasticSearchVersion"
-    testImplementation "org.apache.lucene:lucene-expressions:$luceneVersion"
-    testRuntimeOnly "org.slf4j:slf4j-log4j12:$slf4jVersion"
 }
 
+
 test {
 
     //we do not need to check classpath hell for testing

gradle.properties

@@ -1,2 +1 @@
-group=io.aiven
 version=6.2.0-SNAPSHOT

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,7 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.4-all.zip
+distributionSha256Sum=f2b9ed0faf8472cbe469255ae6c86eddb77076c75191741b4a462f33128dd419
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.4-all.zip
+networkTimeout=10000
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionSha256Sum=cd5c2958a107ee7f0722004a12d0f8559b4564c34daad7df06cffd4d12a426d0

src/main/java/io/aiven/connect/elasticsearch/ElasticsearchSinkConnector.java

@@ -34,7 +34,7 @@ public class ElasticsearchSinkConnector extends SinkConnector {
 
     @Override
     public String version() {
-        return Version.getVersion();
+        return Version.VERSION;
     }
 
     @Override

src/main/java/io/aiven/connect/elasticsearch/ElasticsearchSinkTask.java

@@ -47,7 +47,7 @@ public class ElasticsearchSinkTask extends SinkTask {
 
     @Override
     public String version() {
-        return Version.getVersion();
+        return Version.VERSION;
     }
 
     @Override

src/main/java/io/aiven/connect/elasticsearch/Version.java

@@ -25,23 +25,18 @@
 
 public class Version {
     private static final Logger log = LoggerFactory.getLogger(Version.class);
-    private static String version = "unknown";
+    private static final String PROPERTIES_FILENAME = "elasticsearch-connector-for-apache-kafka-version.properties";
 
-    private static final String VERSION_FILE = "/aiven-kafka-connect-elasticsearch-version.properties";
+    static final String VERSION;
 
     static {
-        try {
-            final Properties props = new Properties();
-            try (InputStream versionFileStream = Version.class.getResourceAsStream(VERSION_FILE)) {
-                props.load(versionFileStream);
-                version = props.getProperty("version", version).trim();
-            }
+        final Properties props = new Properties();
+        try (final InputStream resourceStream =
+                 Version.class.getClassLoader().getResourceAsStream(PROPERTIES_FILENAME)) {
+            props.load(resourceStream);
         } catch (final Exception e) {
-            log.warn("Error while loading version:", e);
+            log.warn("Error while loading {}: {}", PROPERTIES_FILENAME, e.getMessage());
         }
-    }
-
-    public static String getVersion() {
-        return version;
+        VERSION = props.getProperty("version", "unknown").trim();
     }
 }

src/main/resources/aiven-kafka-connect-elasticsearch-version.properties → src/main/resources/elasticsearch-connector-for-apache-kafka-version.properties

@@ -1,6 +1,5 @@
 ##
-# Copyright 2019 Aiven Oy
-# Copyright 2016 Confluent Inc.
+# Copyright 2020 Aiven Oy
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -14,4 +13,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 ##
-version=${version ?: 'unknown'}
+version=${version ?: 'unknown'}