We migrate to JDK 17

This  is a hard requirement to be able to migrate
to a more recent jetty version, which may happen sometime soon.

.github/workflows/ant-build-pull-request.yaml

@@ -8,10 +8,10 @@ jobs:
     if: github.repository == 'yacy/yacy_search_server'
     steps:
     - uses: actions/checkout@master
-    - name: Set up JDK 11
+    - name: Set up JDK 17
       uses: actions/setup-java@v3
       with:
-        java-version: '11'
+        java-version: '17'
         distribution: 'temurin'
     - name: Build with ant
       run: ant clean all dist

.github/workflows/ant-build.yaml

@@ -18,10 +18,10 @@ jobs:
       with:
         fetch-depth: 0  # Required for git version info in build
 
-    - name: Set up JDK 11
+    - name: Set up JDK 17
       uses: actions/setup-java@v3
       with:
-        java-version: '11'
+        java-version: '17'
         distribution: 'temurin'
 
     - name: Install build dependencies

README.md

@@ -55,11 +55,11 @@ To get a ready-to-run production package, run YaCy from Docker.
 
 ### Compile and run YaCy from git sources
 
-You need Java 11 or later to run YaCy and ant to build YaCy.
+You need Java 17 or later to run YaCy and ant to build YaCy.
 This would install the requirements on debian:
 
 ```
-sudo apt-get install openjdk-11-jdk-headless ant
+sudo apt-get install openjdk-17-jdk-headless ant
 ```
 
 Then clone the repository and build the application:

build.nsi

@@ -67,9 +67,9 @@ SetCompressor /SOLID LZMA
 
 !insertmacro MUI_LANGUAGE "English"
 
-LangString javaMissing 0 "Java 11 or newer is required to run YaCy. Download and install the latest Temurin JRE now?"
-LangString javaDownloadFail 0 "Java download failed. Please install Java 11+ manually."
-LangString javaInstallFail 0 "Java 11+ was not found after installation. YaCy may not start until Java is installed."
+LangString javaMissing 0 "Java 17 or newer is required to run YaCy. Download and install the latest Temurin JRE now?"
+LangString javaDownloadFail 0 "Java download failed. Please install Java 17+ manually."
+LangString javaInstallFail 0 "Java 17+ was not found after installation. YaCy may not start until Java is installed."
 LangString keepData 0 "Remove YaCy user data as well?"
 
 Var JavaVersion
@@ -150,7 +150,9 @@ Function EnsureJava
     Call GetJavaVersion
     Push "Java detection: found=$JavaFound version='$JavaVersion' major=$JavaMajor"
     Call LogLine
-    StrCmp $JavaFound "1" JavaOk JavaMissing
+    StrCmp $JavaFound "1" JavaVersionCheck JavaMissing
+    JavaVersionCheck:
+        IntCmp $JavaMajor 17 JavaOk JavaMissing JavaOk
     JavaMissing:
         Push "Java detection: no Java found"
         Call LogLine
@@ -171,6 +173,7 @@ Function EnsureJava
         Push "Java detection (post-install): found=$JavaFound version='$JavaVersion' major=$JavaMajor"
         Call LogLine
         StrCmp $JavaFound "1" 0 JavaStillLow
+        IntCmp $JavaMajor 17 JavaContinue JavaStillLow JavaContinue
         JavaStillLow:
             MessageBox MB_ICONEXCLAMATION "$(javaInstallFail)"
     JavaContinue:
@@ -203,8 +206,8 @@ Function GetJavaVersion
     Call FindJavaFromPath
     ${If} $JavaFound == "1"
         ${If} $JavaMajor == "0"
-            StrCpy $JavaMajor "11"
-            Push "Java detection: version unknown, assuming >=11"
+            StrCpy $JavaMajor "17"
+            Push "Java detection: version unknown, assuming >=17"
             Call LogLine
         ${EndIf}
     ${EndIf}

build.properties

@@ -1,6 +1,5 @@
-# defining some compiler arguments
-javacSource=11
-javacTarget=11
+# Java release used for source compatibility, API compatibility and bytecode
+javacRelease=17
 
 # Release Configuration
 releaseVersion=1.941

build.xml

@@ -179,7 +179,7 @@
     <echo message="project.class.path: ${toString:project.class.path}" />
     <javac srcdir="${src}/" destdir="${build}"
            debug="true" debuglevel="lines,vars,source" includeantruntime="false"
-           source="${javacSource}" target="${javacTarget}" encoding="UTF-8"
+	       release="${javacRelease}" encoding="UTF-8"
 		   nowarn="on">
       <classpath refid="project.class.path" />
       <compilerarg value="-Xlint:unchecked"/>
@@ -336,8 +336,8 @@
   <!-- run unittests-->
   <target name="compileTest" depends="compile" description="run unittests">
       <javac srcdir="${test}" destdir="${test}"
-           debug="true" debuglevel="lines,vars,source"
-           source="${javacSource}" target="${javacTarget}" encoding="UTF-8">
+           debug="true" debuglevel="lines,vars,source" includeantruntime="false"
+           release="${javacRelease}" encoding="UTF-8">
       <classpath>
         <pathelement location="${build}"/>
         <path refid="compile.path"/>

docker/Dockerfile.armv7

@@ -7,28 +7,21 @@
 # docker run -d --name yacy -p 8090:8090 -p 8443:8443 -v yacy_data:/opt/yacy_search_server/DATA --log-opt max-size=200m --log-opt max-file=2 yacy/yacy_search_server:armv7
 
 
-# Base image : latest Debian stable official jdk 11 image from Docker
-FROM arm32v7/openjdk:11-jdk as builder
+# Java 17 is installed from Debian's ARMv7 packages.
+FROM arm32v7/debian:bookworm-slim
 
 # Install needed packages not in base image
-RUN apt-get update && apt-get install -yq curl && \
+RUN apt-get update && apt-get install -yq ant curl openjdk-17-jdk-headless && \
   rm -rf /var/lib/apt/lists/*
 
 # set current working dir & copy sources
 WORKDIR /opt
 COPY . /opt/yacy_search_server/
 
-# .git dir deleted here because .git is needed during the build to deterime the version,
+# .git dir is deleted after the build because it is needed to determine the version,
 # but isn't required at runtime
-RUN ant compile -f /opt/yacy_search_server/build.xml \
-RUN rm -rf /opt/yacy_search_server/.git && \
-    apt-get update && \
-	apt-get install -yq ant && \
-	ant compile -f /opt/yacy_search_server/build.xml && \
-	apt-get purge -yq --auto-remove ant && \
-	apt-get clean && \
-  rm -fr /opt/yacy_search_server/.git && \
-	rm -rf /var/lib/apt/lists/*
+RUN ant compile -f /opt/yacy_search_server/build.xml && \
+    rm -rf /opt/yacy_search_server/.git
 
 # Set initial admin password: "yacy" (encoded with custom yacy md5 function net.yacy.cora.order.Digest.encodeMD5Hex())
 RUN sed -i "/adminAccountBase64MD5=/c\adminAccountBase64MD5=MD5:8cffbc0d66567a0987a4aba1ec46d63c" /opt/yacy_search_server/defaults/yacy.init && \

package_macos_app.sh

@@ -311,7 +311,19 @@ elif command -v /usr/libexec/java_home >/dev/null 2>&1; then
 fi
 
 if [[ -z "${JAVA_BIN}" ]]; then
-  echo "Unable to find a Java runtime. Please install Java (JDK 11+) and try again." >&2
+  echo "Unable to find a Java runtime. Please install Java (JDK 17+) and try again." >&2
+  exit 1
+fi
+
+JAVA_SPEC_VERSION="$("${JAVA_BIN}" -XshowSettings:properties -version 2>&1 | sed -n 's/^[[:space:]]*java.specification.version = //p' | head -n 1)"
+JAVA_MAJOR_VERSION="${JAVA_SPEC_VERSION#1.}"
+JAVA_MAJOR_VERSION="${JAVA_MAJOR_VERSION%%.*}"
+if [[ ! "${JAVA_MAJOR_VERSION}" =~ ^[0-9]+$ ]]; then
+  echo "Unable to determine the Java version reported by ${JAVA_BIN}." >&2
+  exit 1
+fi
+if (( JAVA_MAJOR_VERSION < 17 )); then
+  echo "Java 17 or newer is required to run YaCy (found Java ${JAVA_SPEC_VERSION})." >&2
   exit 1
 fi
 

snap/snapcraft.yaml

@@ -45,7 +45,7 @@ parts:
       - dist
     source: https://github.com/yacy/yacy_search_server.git
     build-packages:
-      - openjdk-8-jdk
+      - openjdk-17-jdk
     override-build: |
       snapcraftctl build
       tar -xzf RELEASE/yacy*.tar.gz -C "$SNAPCRAFT_PART_INSTALL/"

source/net/yacy/peers/operation/yacySeedUploadScp.xml

@@ -11,7 +11,7 @@
    	<property name="parserArchive" location="${release}/${addonLongName}_${addonVersion}.tgz"/>	    	
     	
     <target name="compile">
-  	  <javac srcdir="${src}/net/yacy/peers/operation/" destdir="${build}" source="${javacSource}" target="${javacTarget}" debug="true" debuglevel="lines,vars,source">
+      <javac srcdir="${src}/net/yacy/peers/operation/" destdir="${build}" release="${javacRelease}" debug="true" debuglevel="lines,vars,source" includeantruntime="false">
   	    <include name="yacySeedUpload${addonShortName}.java"/>
   	  	<classpath>
   	  	  <pathelement location="${build}" />	
@@ -70,4 +70,3 @@
 	
 	
 </project>
-

startYACY.bat

@@ -1,6 +1,23 @@
 @Echo Off
 title YaCy
 
+where java >nul 2>&1
+if errorlevel 1 (
+    Echo Java was not found. Java 17 or newer is required to run YaCy.
+    GoTo :END
+)
+set "JAVA_SPEC_VERSION="
+for /F "tokens=3" %%v in ('java -XshowSettings:properties -version 2^>^&1 ^| findstr /C:"java.specification.version ="') do set "JAVA_SPEC_VERSION=%%v"
+if not defined JAVA_SPEC_VERSION (
+    Echo Unable to determine the installed Java version. Java 17 or newer is required.
+    GoTo :END
+)
+for /F "tokens=1 delims=." %%v in ("%JAVA_SPEC_VERSION%") do set "JAVA_MAJOR_VERSION=%%v"
+if %JAVA_MAJOR_VERSION% LSS 17 (
+    Echo Java 17 or newer is required to run YaCy. Found Java %JAVA_SPEC_VERSION%.
+    GoTo :END
+)
+
 REM setting startup type for proper restart
 if "%YACY_DATA%"=="" set "YACY_DATA=%LOCALAPPDATA%\YaCy"
 set "YACY_DATA_DIR=%YACY_DATA%\DATA"

startYACY.sh

@@ -38,6 +38,21 @@ then
     exit 1
 fi
 
+JAVA_SPECIFICATION_VERSION="`"$JAVA" -XshowSettings:properties -version 2>&1 | sed -n 's/^[[:space:]]*java.specification.version = //p' | head -n 1`"
+JAVA_MAJOR_VERSION="${JAVA_SPECIFICATION_VERSION#1.}"
+JAVA_MAJOR_VERSION="${JAVA_MAJOR_VERSION%%.*}"
+case "$JAVA_MAJOR_VERSION" in
+    ''|*[!0-9]*)
+        echo "Unable to determine the Java version reported by $JAVA."
+        exit 1
+        ;;
+esac
+if [ "$JAVA_MAJOR_VERSION" -lt 17 ]
+then
+    echo "Java 17 or newer is required to run YaCy (found Java $JAVA_SPECIFICATION_VERSION)."
+    exit 1
+fi
+
 
 usage() {
     cat - <<USAGE