Java 21 (#1928)

* Introducing Java 21

* Gradle 8.11, fixed CI

* Gradle 8.10

.github/workflows/ci.yml

@@ -47,10 +47,10 @@ jobs:
       - uses: actions/checkout@v4
         with:
           fetch-depth: 0
-      - name: Set up JDK 17
+      - name: Set up JDK 21
         uses: actions/setup-java@v4
         with:
-          java-version: 17
+          java-version: 21
           distribution: 'temurin'
       - name: Setup Gradle
         uses: gradle/gradle-build-action@v2

.github/workflows/codeql-analysis.yml

@@ -37,10 +37,10 @@ jobs:
     - name: Checkout repository
       uses: actions/checkout@v4
 
-    - name: Set up JDK 17
+    - name: Set up JDK 21
       uses: actions/setup-java@v4
       with:
-        java-version: 17
+        java-version: 21
         distribution: 'temurin'
 
     # Initializes the CodeQL tools for scanning.

.github/workflows/release.yml

@@ -22,7 +22,7 @@ jobs:
       - name: Set up JDK
         uses: actions/setup-java@v4
         with:
-          java-version: '17'
+          java-version: '21'
           distribution: 'temurin'
       - name: Setup Gradle
         uses: gradle/gradle-build-action@v2

build.gradle

@@ -20,6 +20,12 @@ scmVersion {
     versionCreator 'versionWithBranch'
 }
 
+java {
+    toolchain {
+        languageVersion = JavaLanguageVersion.of(21)
+    }
+}
+
 nexusPublishing {
     connectTimeout = Duration.ofMinutes(getIntProperty('publishingTimeoutInMin', 10))
     clientTimeout = Duration.ofMinutes(getIntProperty('publishingTimeoutInMin', 10))
@@ -43,9 +49,6 @@ allprojects {
     group = 'pl.allegro.tech.hermes'
     version = scmVersion.version
 
-    sourceCompatibility = JavaVersion.VERSION_17
-    targetCompatibility = JavaVersion.VERSION_17
-
     project.ext.versions = [
             kafka             : '2.8.2',
             guava             : '33.1.0-jre',
@@ -195,9 +198,9 @@ subprojects {
 
     test {
         reports {
-            html.enabled = false
-            junitXml.enabled = true
-            junitXml.destination = file("$buildDir/test-results/$name")
+            html.required = false
+            junitXml.required = true
+            junitXml.outputLocation = file("$buildDir/test-results/$name")
         }
 
         testLogging {

docker/latest/consumers/Dockerfile

@@ -1,10 +1,10 @@
-FROM gradle:7.6-jdk17 AS builder
+FROM gradle:7.6-jdk21 AS builder
 
 COPY --chown=gradle:gradle . /home/gradle/src/
 WORKDIR /home/gradle/src/
 RUN gradle clean distZip -Pdistribution
 
-FROM eclipse-temurin:17.0.7_7-jre
+FROM eclipse-temurin:21-jre
 
 RUN apt-get update \
   && apt-get -y install unzip wget bash \

docker/latest/frontend/Dockerfile

@@ -1,10 +1,10 @@
-FROM gradle:7.6-jdk17 AS builder
+FROM gradle:7.6-jdk21 AS builder
 
 COPY --chown=gradle:gradle . /home/gradle/src/
 WORKDIR /home/gradle/src/
 RUN gradle clean distZip -Pdistribution
 
-FROM eclipse-temurin:17.0.7_7-jre
+FROM eclipse-temurin:21-jre
 
 RUN apt-get update \
   && apt-get -y install unzip wget bash \

docker/latest/management/Dockerfile

@@ -1,10 +1,10 @@
-FROM gradle:7.6-jdk17 AS builder
+FROM gradle:7.6-jdk21 AS builder
 
 COPY --chown=gradle:gradle . /home/gradle/src/
 WORKDIR /home/gradle/src/
 RUN gradle clean distZip -Pdistribution
 
-FROM eclipse-temurin:17.0.7_7-jre
+FROM eclipse-temurin:21-jre
 
 RUN apt-get update \
   && apt-get -y install unzip wget bash \

gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,7 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-7.6-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.10-bin.zip
+networkTimeout=10000
+validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists

gradlew

@@ -15,6 +15,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
+# SPDX-License-Identifier: Apache-2.0
+#
 
 ##############################################################################
 #
@@ -55,7 +57,7 @@
 #       Darwin, MinGW, and NonStop.
 #
 #   (3) This script is generated from the Groovy template
-#       https://github.com/gradle/gradle/blob/master/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
+#       https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
 #       within the Gradle project.
 #
 #       You can find Gradle at https://github.com/gradle/gradle/.
@@ -80,13 +82,12 @@ do
     esac
 done
 
-APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
-
-APP_NAME="Gradle"
+# This is normally unused
+# shellcheck disable=SC2034
 APP_BASE_NAME=${0##*/}
-
-# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
-DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
+APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s
+' "$PWD" ) || exit
 
 # Use the maximum available, or set MAX_FD != -1 to use that value.
 MAX_FD=maximum
@@ -133,22 +134,29 @@ location of your Java installation."
     fi
 else
     JAVACMD=java
-    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+    if ! command -v java >/dev/null 2>&1
+    then
+        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
 
 Please set the JAVA_HOME variable in your environment to match the
 location of your Java installation."
+    fi
 fi
 
 # Increase the maximum file descriptors if we can.
 if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
     case $MAX_FD in #(
       max*)
+        # In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
         MAX_FD=$( ulimit -H -n ) ||
             warn "Could not query maximum file descriptor limit"
     esac
     case $MAX_FD in  #(
       '' | soft) :;; #(
       *)
+        # In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
+        # shellcheck disable=SC2039,SC3045
         ulimit -n "$MAX_FD" ||
             warn "Could not set maximum file descriptor limit to $MAX_FD"
     esac
@@ -193,18 +201,28 @@ if "$cygwin" || "$msys" ; then
     done
 fi
 
-# Collect all arguments for the java command;
-#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
-#     shell script including quotes and variable substitutions, so put them in
-#     double quotes to make sure that they get re-expanded; and
-#   * put everything else in single quotes, so that it's not re-expanded.
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Collect all arguments for the java command:
+#   * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
+#     and any embedded shellness will be escaped.
+#   * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
+#     treated as '${Hostname}' itself on the command line.
 
 set -- \
         "-Dorg.gradle.appname=$APP_BASE_NAME" \
         -classpath "$CLASSPATH" \
         org.gradle.wrapper.GradleWrapperMain \
         "$@"
 
+# Stop when "xargs" is not available.
+if ! command -v xargs >/dev/null 2>&1
+then
+    die "xargs is not available"
+fi
+
 # Use "xargs" to parse quoted args.
 #
 # With -n1 it outputs one arg per line, with the quotes and backslashes removed.

gradlew.bat

@@ -13,8 +13,10 @@
 @rem See the License for the specific language governing permissions and
 @rem limitations under the License.
 @rem
+@rem SPDX-License-Identifier: Apache-2.0
+@rem
 
-@if "%DEBUG%" == "" @echo off
+@if "%DEBUG%"=="" @echo off
 @rem ##########################################################################
 @rem
 @rem  Gradle startup script for Windows
@@ -25,7 +27,8 @@
 if "%OS%"=="Windows_NT" setlocal
 
 set DIRNAME=%~dp0
-if "%DIRNAME%" == "" set DIRNAME=.
+if "%DIRNAME%"=="" set DIRNAME=.
+@rem This is normally unused
 set APP_BASE_NAME=%~n0
 set APP_HOME=%DIRNAME%
 
@@ -40,13 +43,13 @@ if defined JAVA_HOME goto findJavaFromJavaHome
 
 set JAVA_EXE=java.exe
 %JAVA_EXE% -version >NUL 2>&1
-if "%ERRORLEVEL%" == "0" goto execute
+if %ERRORLEVEL% equ 0 goto execute
 
-echo.
-echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
+echo. 1>&2
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
 
 goto fail
 
@@ -56,11 +59,11 @@ set JAVA_EXE=%JAVA_HOME%/bin/java.exe
 
 if exist "%JAVA_EXE%" goto execute
 
-echo.
-echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
-echo.
-echo Please set the JAVA_HOME variable in your environment to match the
-echo location of your Java installation.
+echo. 1>&2
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
+echo. 1>&2
+echo Please set the JAVA_HOME variable in your environment to match the 1>&2
+echo location of your Java installation. 1>&2
 
 goto fail
 
@@ -75,13 +78,15 @@ set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
 
 :end
 @rem End local scope for the variables with windows NT shell
-if "%ERRORLEVEL%"=="0" goto mainEnd
+if %ERRORLEVEL% equ 0 goto mainEnd
 
 :fail
 rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
 rem the _cmd.exe /c_ return code!
-if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
-exit /b 1
+set EXIT_CODE=%ERRORLEVEL%
+if %EXIT_CODE% equ 0 set EXIT_CODE=1
+if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
+exit /b %EXIT_CODE%
 
 :mainEnd
 if "%OS%"=="Windows_NT" endlocal

hermes-frontend/build.gradle

@@ -14,7 +14,7 @@ dependencies {
     api group: 'org.springframework.boot', name: 'spring-boot-starter', version: versions.spring
     api group: 'io.undertow', name: 'undertow-core', version: versions.undertow
     // Did not update that as we're trying to abandon buffers
-    api(group: 'net.openhft', name: 'chronicle-map', version: '3.22.9') {
+    api(group: 'net.openhft', name: 'chronicle-map', version: '3.25ea6') {
         exclude group: 'net.openhft', module: 'chronicle-analytics'
     }
     implementation group: 'commons-io', name: 'commons-io', version: '2.16.1'

hermes-frontend/src/test/groovy/pl/allegro/tech/hermes/frontend/producer/kafka/LocalDatacenterMessageProducerIntegrationTest.groovy

@@ -1,6 +1,5 @@
 package pl.allegro.tech.hermes.frontend.producer.kafka
 
-import com.codahale.metrics.MetricRegistry
 import io.micrometer.core.instrument.simple.SimpleMeterRegistry
 import org.apache.commons.lang3.tuple.ImmutablePair
 import org.apache.kafka.clients.admin.AdminClient
@@ -85,7 +84,7 @@ class LocalDatacenterMessageProducerIntegrationTest extends Specification {
     String datacenter = "dc"
 
     @Shared
-    ScheduledExecutorService chaosScheduler = Executors.newSingleThreadScheduledExecutor();
+    ScheduledExecutorService chaosScheduler = Executors.newSingleThreadScheduledExecutor()
 
     @Shared
     MetricsFacade metricsFacade = new MetricsFacade(new SimpleMeterRegistry())

hermes-management/build.gradle

@@ -89,6 +89,14 @@ tasks.register('prepareIndexTemplate') {
     }
 }
 
+tasks.named('compileTestGroovy') {
+    dependsOn 'attachHermesConsole'
+}
+
+tasks.named('javadoc') {
+    dependsOn 'attachHermesConsole'
+}
+
 jar.dependsOn(attachHermesConsole, 'prepareIndexTemplate')
 
 run.dependsOn(attachHermesConsole, 'prepareIndexTemplate')

hermes-tracker-elasticsearch/build.gradle

@@ -5,15 +5,12 @@ dependencies {
     implementation project(':hermes-common')
     implementation project(':hermes-tracker')
     implementation 'org.slf4j:slf4j-api:2.0.13'
-    // TODO: client has to have the same major version as backend: https://www.elastic.co/guide/en/elasticsearch/client/java-api/current/client.html
-    // we need to use test-containers for elasticsearch server to able to use newer client.
-    api group: 'org.elasticsearch.client', name: 'transport', version: '6.8.12'
+    api group: 'org.elasticsearch.client', name: 'transport', version: '7.10.2'
 
     testImplementation project(path: ":hermes-tracker", configuration: "testArtifacts")
     testImplementation project(path: ":hermes-test-helper")
     testImplementation group: 'org.spockframework', name: 'spock-core', version: versions.spock
     testImplementation group: 'org.spockframework', name: 'spock-junit4', version: versions.spock
-    // this should be migrated to testcontainers
-    testImplementation 'pl.allegro.tech:embedded-elasticsearch:2.10.0'
+    testImplementation "org.testcontainers:elasticsearch:1.20.3"
     testRuntimeOnly group: 'org.junit.vintage', name: 'junit-vintage-engine', version: versions.junit_jupiter
 }