From 2d451afe354f58fb493dc939aa8d058ff5153475 Mon Sep 17 00:00:00 2001 From: Aditya Choudhary Date: Mon, 10 Nov 2025 20:15:47 +0530 Subject: [PATCH] feature(virtual-threads): testing virtual threads --- .gitignore | 33 ++ .mvn/wrapper/maven-wrapper.properties | 3 + mvnw | 295 ++++++++++++++++++ mvnw.cmd | 189 +++++++++++ pom.xml | 95 ++++++ .../VirtualThreadsKafkaApplication.java | 13 + .../config/CustomExecutorConfig.java | 32 ++ .../config/KafkaConsumerConfig.java | 76 +++++ .../controller/HelloWorldController.java | 15 + .../listener/KafkaMessageConsumer.java | 54 ++++ .../listener/SemaphoreBasedConsumer.java | 67 ++++ src/main/resources/application.properties | 22 ++ src/main/resources/logback-spring.xml | 107 +++++++ .../VirtualThreadsKafkaApplicationTests.java | 13 + 14 files changed, 1014 insertions(+) create mode 100644 .gitignore create mode 100644 .mvn/wrapper/maven-wrapper.properties create mode 100755 mvnw create mode 100644 mvnw.cmd create mode 100644 pom.xml create mode 100644 src/main/java/com/virtual_threads_kafka/VirtualThreadsKafkaApplication.java create mode 100644 src/main/java/com/virtual_threads_kafka/config/CustomExecutorConfig.java create mode 100644 src/main/java/com/virtual_threads_kafka/config/KafkaConsumerConfig.java create mode 100644 src/main/java/com/virtual_threads_kafka/controller/HelloWorldController.java create mode 100644 src/main/java/com/virtual_threads_kafka/listener/KafkaMessageConsumer.java create mode 100644 src/main/java/com/virtual_threads_kafka/listener/SemaphoreBasedConsumer.java create mode 100644 src/main/resources/application.properties create mode 100644 src/main/resources/logback-spring.xml create mode 100644 src/test/java/com/virtual_threads_kafka/VirtualThreadsKafkaApplicationTests.java diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..667aaef --- /dev/null +++ b/.gitignore @@ -0,0 +1,33 @@ +HELP.md +target/ +.mvn/wrapper/maven-wrapper.jar +!**/src/main/**/target/ +!**/src/test/**/target/ + +### STS ### +.apt_generated +.classpath +.factorypath +.project +.settings +.springBeans +.sts4-cache + +### IntelliJ IDEA ### +.idea +*.iws +*.iml +*.ipr + +### NetBeans ### +/nbproject/private/ +/nbbuild/ +/dist/ +/nbdist/ +/.nb-gradle/ +build/ +!**/src/main/**/build/ +!**/src/test/**/build/ + +### VS Code ### +.vscode/ diff --git a/.mvn/wrapper/maven-wrapper.properties b/.mvn/wrapper/maven-wrapper.properties new file mode 100644 index 0000000..c0bcafe --- /dev/null +++ b/.mvn/wrapper/maven-wrapper.properties @@ -0,0 +1,3 @@ +wrapperVersion=3.3.4 +distributionType=only-script +distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.11/apache-maven-3.9.11-bin.zip diff --git a/mvnw b/mvnw new file mode 100755 index 0000000..bd8896b --- /dev/null +++ b/mvnw @@ -0,0 +1,295 @@ +#!/bin/sh +# ---------------------------------------------------------------------------- +# Licensed to the Apache Software Foundation (ASF) under one +# or more contributor license agreements. See the NOTICE file +# distributed with this work for additional information +# regarding copyright ownership. The ASF licenses this file +# to you 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. +# ---------------------------------------------------------------------------- + +# ---------------------------------------------------------------------------- +# Apache Maven Wrapper startup batch script, version 3.3.4 +# +# Optional ENV vars +# ----------------- +# JAVA_HOME - location of a JDK home dir, required when download maven via java source +# MVNW_REPOURL - repo url base for downloading maven distribution +# MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven +# MVNW_VERBOSE - true: enable verbose log; debug: trace the mvnw script; others: silence the output +# ---------------------------------------------------------------------------- + +set -euf +[ "${MVNW_VERBOSE-}" != debug ] || set -x + +# OS specific support. +native_path() { printf %s\\n "$1"; } +case "$(uname)" in +CYGWIN* | MINGW*) + [ -z "${JAVA_HOME-}" ] || JAVA_HOME="$(cygpath --unix "$JAVA_HOME")" + native_path() { cygpath --path --windows "$1"; } + ;; +esac + +# set JAVACMD and JAVACCMD +set_java_home() { + # For Cygwin and MinGW, ensure paths are in Unix format before anything is touched + if [ -n "${JAVA_HOME-}" ]; then + if [ -x "$JAVA_HOME/jre/sh/java" ]; then + # IBM's JDK on AIX uses strange locations for the executables + JAVACMD="$JAVA_HOME/jre/sh/java" + JAVACCMD="$JAVA_HOME/jre/sh/javac" + else + JAVACMD="$JAVA_HOME/bin/java" + JAVACCMD="$JAVA_HOME/bin/javac" + + if [ ! -x "$JAVACMD" ] || [ ! -x "$JAVACCMD" ]; then + echo "The JAVA_HOME environment variable is not defined correctly, so mvnw cannot run." >&2 + echo "JAVA_HOME is set to \"$JAVA_HOME\", but \"\$JAVA_HOME/bin/java\" or \"\$JAVA_HOME/bin/javac\" does not exist." >&2 + return 1 + fi + fi + else + JAVACMD="$( + 'set' +e + 'unset' -f command 2>/dev/null + 'command' -v java + )" || : + JAVACCMD="$( + 'set' +e + 'unset' -f command 2>/dev/null + 'command' -v javac + )" || : + + if [ ! -x "${JAVACMD-}" ] || [ ! -x "${JAVACCMD-}" ]; then + echo "The java/javac command does not exist in PATH nor is JAVA_HOME set, so mvnw cannot run." >&2 + return 1 + fi + fi +} + +# hash string like Java String::hashCode +hash_string() { + str="${1:-}" h=0 + while [ -n "$str" ]; do + char="${str%"${str#?}"}" + h=$(((h * 31 + $(LC_CTYPE=C printf %d "'$char")) % 4294967296)) + str="${str#?}" + done + printf %x\\n $h +} + +verbose() { :; } +[ "${MVNW_VERBOSE-}" != true ] || verbose() { printf %s\\n "${1-}"; } + +die() { + printf %s\\n "$1" >&2 + exit 1 +} + +trim() { + # MWRAPPER-139: + # Trims trailing and leading whitespace, carriage returns, tabs, and linefeeds. + # Needed for removing poorly interpreted newline sequences when running in more + # exotic environments such as mingw bash on Windows. + printf "%s" "${1}" | tr -d '[:space:]' +} + +scriptDir="$(dirname "$0")" +scriptName="$(basename "$0")" + +# parse distributionUrl and optional distributionSha256Sum, requires .mvn/wrapper/maven-wrapper.properties +while IFS="=" read -r key value; do + case "${key-}" in + distributionUrl) distributionUrl=$(trim "${value-}") ;; + distributionSha256Sum) distributionSha256Sum=$(trim "${value-}") ;; + esac +done <"$scriptDir/.mvn/wrapper/maven-wrapper.properties" +[ -n "${distributionUrl-}" ] || die "cannot read distributionUrl property in $scriptDir/.mvn/wrapper/maven-wrapper.properties" + +case "${distributionUrl##*/}" in +maven-mvnd-*bin.*) + MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/ + case "${PROCESSOR_ARCHITECTURE-}${PROCESSOR_ARCHITEW6432-}:$(uname -a)" in + *AMD64:CYGWIN* | *AMD64:MINGW*) distributionPlatform=windows-amd64 ;; + :Darwin*x86_64) distributionPlatform=darwin-amd64 ;; + :Darwin*arm64) distributionPlatform=darwin-aarch64 ;; + :Linux*x86_64*) distributionPlatform=linux-amd64 ;; + *) + echo "Cannot detect native platform for mvnd on $(uname)-$(uname -m), use pure java version" >&2 + distributionPlatform=linux-amd64 + ;; + esac + distributionUrl="${distributionUrl%-bin.*}-$distributionPlatform.zip" + ;; +maven-mvnd-*) MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/ ;; +*) MVN_CMD="mvn${scriptName#mvnw}" _MVNW_REPO_PATTERN=/org/apache/maven/ ;; +esac + +# apply MVNW_REPOURL and calculate MAVEN_HOME +# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-,maven-mvnd--}/ +[ -z "${MVNW_REPOURL-}" ] || distributionUrl="$MVNW_REPOURL$_MVNW_REPO_PATTERN${distributionUrl#*"$_MVNW_REPO_PATTERN"}" +distributionUrlName="${distributionUrl##*/}" +distributionUrlNameMain="${distributionUrlName%.*}" +distributionUrlNameMain="${distributionUrlNameMain%-bin}" +MAVEN_USER_HOME="${MAVEN_USER_HOME:-${HOME}/.m2}" +MAVEN_HOME="${MAVEN_USER_HOME}/wrapper/dists/${distributionUrlNameMain-}/$(hash_string "$distributionUrl")" + +exec_maven() { + unset MVNW_VERBOSE MVNW_USERNAME MVNW_PASSWORD MVNW_REPOURL || : + exec "$MAVEN_HOME/bin/$MVN_CMD" "$@" || die "cannot exec $MAVEN_HOME/bin/$MVN_CMD" +} + +if [ -d "$MAVEN_HOME" ]; then + verbose "found existing MAVEN_HOME at $MAVEN_HOME" + exec_maven "$@" +fi + +case "${distributionUrl-}" in +*?-bin.zip | *?maven-mvnd-?*-?*.zip) ;; +*) die "distributionUrl is not valid, must match *-bin.zip or maven-mvnd-*.zip, but found '${distributionUrl-}'" ;; +esac + +# prepare tmp dir +if TMP_DOWNLOAD_DIR="$(mktemp -d)" && [ -d "$TMP_DOWNLOAD_DIR" ]; then + clean() { rm -rf -- "$TMP_DOWNLOAD_DIR"; } + trap clean HUP INT TERM EXIT +else + die "cannot create temp dir" +fi + +mkdir -p -- "${MAVEN_HOME%/*}" + +# Download and Install Apache Maven +verbose "Couldn't find MAVEN_HOME, downloading and installing it ..." +verbose "Downloading from: $distributionUrl" +verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName" + +# select .zip or .tar.gz +if ! command -v unzip >/dev/null; then + distributionUrl="${distributionUrl%.zip}.tar.gz" + distributionUrlName="${distributionUrl##*/}" +fi + +# verbose opt +__MVNW_QUIET_WGET=--quiet __MVNW_QUIET_CURL=--silent __MVNW_QUIET_UNZIP=-q __MVNW_QUIET_TAR='' +[ "${MVNW_VERBOSE-}" != true ] || __MVNW_QUIET_WGET='' __MVNW_QUIET_CURL='' __MVNW_QUIET_UNZIP='' __MVNW_QUIET_TAR=v + +# normalize http auth +case "${MVNW_PASSWORD:+has-password}" in +'') MVNW_USERNAME='' MVNW_PASSWORD='' ;; +has-password) [ -n "${MVNW_USERNAME-}" ] || MVNW_USERNAME='' MVNW_PASSWORD='' ;; +esac + +if [ -z "${MVNW_USERNAME-}" ] && command -v wget >/dev/null; then + verbose "Found wget ... using wget" + wget ${__MVNW_QUIET_WGET:+"$__MVNW_QUIET_WGET"} "$distributionUrl" -O "$TMP_DOWNLOAD_DIR/$distributionUrlName" || die "wget: Failed to fetch $distributionUrl" +elif [ -z "${MVNW_USERNAME-}" ] && command -v curl >/dev/null; then + verbose "Found curl ... using curl" + curl ${__MVNW_QUIET_CURL:+"$__MVNW_QUIET_CURL"} -f -L -o "$TMP_DOWNLOAD_DIR/$distributionUrlName" "$distributionUrl" || die "curl: Failed to fetch $distributionUrl" +elif set_java_home; then + verbose "Falling back to use Java to download" + javaSource="$TMP_DOWNLOAD_DIR/Downloader.java" + targetZip="$TMP_DOWNLOAD_DIR/$distributionUrlName" + cat >"$javaSource" <<-END + public class Downloader extends java.net.Authenticator + { + protected java.net.PasswordAuthentication getPasswordAuthentication() + { + return new java.net.PasswordAuthentication( System.getenv( "MVNW_USERNAME" ), System.getenv( "MVNW_PASSWORD" ).toCharArray() ); + } + public static void main( String[] args ) throws Exception + { + setDefault( new Downloader() ); + java.nio.file.Files.copy( java.net.URI.create( args[0] ).toURL().openStream(), java.nio.file.Paths.get( args[1] ).toAbsolutePath().normalize() ); + } + } + END + # For Cygwin/MinGW, switch paths to Windows format before running javac and java + verbose " - Compiling Downloader.java ..." + "$(native_path "$JAVACCMD")" "$(native_path "$javaSource")" || die "Failed to compile Downloader.java" + verbose " - Running Downloader.java ..." + "$(native_path "$JAVACMD")" -cp "$(native_path "$TMP_DOWNLOAD_DIR")" Downloader "$distributionUrl" "$(native_path "$targetZip")" +fi + +# If specified, validate the SHA-256 sum of the Maven distribution zip file +if [ -n "${distributionSha256Sum-}" ]; then + distributionSha256Result=false + if [ "$MVN_CMD" = mvnd.sh ]; then + echo "Checksum validation is not supported for maven-mvnd." >&2 + echo "Please disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2 + exit 1 + elif command -v sha256sum >/dev/null; then + if echo "$distributionSha256Sum $TMP_DOWNLOAD_DIR/$distributionUrlName" | sha256sum -c - >/dev/null 2>&1; then + distributionSha256Result=true + fi + elif command -v shasum >/dev/null; then + if echo "$distributionSha256Sum $TMP_DOWNLOAD_DIR/$distributionUrlName" | shasum -a 256 -c >/dev/null 2>&1; then + distributionSha256Result=true + fi + else + echo "Checksum validation was requested but neither 'sha256sum' or 'shasum' are available." >&2 + echo "Please install either command, or disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." >&2 + exit 1 + fi + if [ $distributionSha256Result = false ]; then + echo "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised." >&2 + echo "If you updated your Maven version, you need to update the specified distributionSha256Sum property." >&2 + exit 1 + fi +fi + +# unzip and move +if command -v unzip >/dev/null; then + unzip ${__MVNW_QUIET_UNZIP:+"$__MVNW_QUIET_UNZIP"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -d "$TMP_DOWNLOAD_DIR" || die "failed to unzip" +else + tar xzf${__MVNW_QUIET_TAR:+"$__MVNW_QUIET_TAR"} "$TMP_DOWNLOAD_DIR/$distributionUrlName" -C "$TMP_DOWNLOAD_DIR" || die "failed to untar" +fi + +# Find the actual extracted directory name (handles snapshots where filename != directory name) +actualDistributionDir="" + +# First try the expected directory name (for regular distributions) +if [ -d "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain" ]; then + if [ -f "$TMP_DOWNLOAD_DIR/$distributionUrlNameMain/bin/$MVN_CMD" ]; then + actualDistributionDir="$distributionUrlNameMain" + fi +fi + +# If not found, search for any directory with the Maven executable (for snapshots) +if [ -z "$actualDistributionDir" ]; then + # enable globbing to iterate over items + set +f + for dir in "$TMP_DOWNLOAD_DIR"/*; do + if [ -d "$dir" ]; then + if [ -f "$dir/bin/$MVN_CMD" ]; then + actualDistributionDir="$(basename "$dir")" + break + fi + fi + done + set -f +fi + +if [ -z "$actualDistributionDir" ]; then + verbose "Contents of $TMP_DOWNLOAD_DIR:" + verbose "$(ls -la "$TMP_DOWNLOAD_DIR")" + die "Could not find Maven distribution directory in extracted archive" +fi + +verbose "Found extracted Maven distribution directory: $actualDistributionDir" +printf %s\\n "$distributionUrl" >"$TMP_DOWNLOAD_DIR/$actualDistributionDir/mvnw.url" +mv -- "$TMP_DOWNLOAD_DIR/$actualDistributionDir" "$MAVEN_HOME" || [ -d "$MAVEN_HOME" ] || die "fail to move MAVEN_HOME" + +clean || : +exec_maven "$@" diff --git a/mvnw.cmd b/mvnw.cmd new file mode 100644 index 0000000..92450f9 --- /dev/null +++ b/mvnw.cmd @@ -0,0 +1,189 @@ +<# : batch portion +@REM ---------------------------------------------------------------------------- +@REM Licensed to the Apache Software Foundation (ASF) under one +@REM or more contributor license agreements. See the NOTICE file +@REM distributed with this work for additional information +@REM regarding copyright ownership. The ASF licenses this file +@REM to you under the Apache License, Version 2.0 (the +@REM "License"); you may not use this file except in compliance +@REM with the License. You may obtain a copy of the License at +@REM +@REM http://www.apache.org/licenses/LICENSE-2.0 +@REM +@REM Unless required by applicable law or agreed to in writing, +@REM software distributed under the License is distributed on an +@REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY +@REM KIND, either express or implied. See the License for the +@REM specific language governing permissions and limitations +@REM under the License. +@REM ---------------------------------------------------------------------------- + +@REM ---------------------------------------------------------------------------- +@REM Apache Maven Wrapper startup batch script, version 3.3.4 +@REM +@REM Optional ENV vars +@REM MVNW_REPOURL - repo url base for downloading maven distribution +@REM MVNW_USERNAME/MVNW_PASSWORD - user and password for downloading maven +@REM MVNW_VERBOSE - true: enable verbose log; others: silence the output +@REM ---------------------------------------------------------------------------- + +@IF "%__MVNW_ARG0_NAME__%"=="" (SET __MVNW_ARG0_NAME__=%~nx0) +@SET __MVNW_CMD__= +@SET __MVNW_ERROR__= +@SET __MVNW_PSMODULEP_SAVE=%PSModulePath% +@SET PSModulePath= +@FOR /F "usebackq tokens=1* delims==" %%A IN (`powershell -noprofile "& {$scriptDir='%~dp0'; $script='%__MVNW_ARG0_NAME__%'; icm -ScriptBlock ([Scriptblock]::Create((Get-Content -Raw '%~f0'))) -NoNewScope}"`) DO @( + IF "%%A"=="MVN_CMD" (set __MVNW_CMD__=%%B) ELSE IF "%%B"=="" (echo %%A) ELSE (echo %%A=%%B) +) +@SET PSModulePath=%__MVNW_PSMODULEP_SAVE% +@SET __MVNW_PSMODULEP_SAVE= +@SET __MVNW_ARG0_NAME__= +@SET MVNW_USERNAME= +@SET MVNW_PASSWORD= +@IF NOT "%__MVNW_CMD__%"=="" ("%__MVNW_CMD__%" %*) +@echo Cannot start maven from wrapper >&2 && exit /b 1 +@GOTO :EOF +: end batch / begin powershell #> + +$ErrorActionPreference = "Stop" +if ($env:MVNW_VERBOSE -eq "true") { + $VerbosePreference = "Continue" +} + +# calculate distributionUrl, requires .mvn/wrapper/maven-wrapper.properties +$distributionUrl = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionUrl +if (!$distributionUrl) { + Write-Error "cannot read distributionUrl property in $scriptDir/.mvn/wrapper/maven-wrapper.properties" +} + +switch -wildcard -casesensitive ( $($distributionUrl -replace '^.*/','') ) { + "maven-mvnd-*" { + $USE_MVND = $true + $distributionUrl = $distributionUrl -replace '-bin\.[^.]*$',"-windows-amd64.zip" + $MVN_CMD = "mvnd.cmd" + break + } + default { + $USE_MVND = $false + $MVN_CMD = $script -replace '^mvnw','mvn' + break + } +} + +# apply MVNW_REPOURL and calculate MAVEN_HOME +# maven home pattern: ~/.m2/wrapper/dists/{apache-maven-,maven-mvnd--}/ +if ($env:MVNW_REPOURL) { + $MVNW_REPO_PATTERN = if ($USE_MVND -eq $False) { "/org/apache/maven/" } else { "/maven/mvnd/" } + $distributionUrl = "$env:MVNW_REPOURL$MVNW_REPO_PATTERN$($distributionUrl -replace "^.*$MVNW_REPO_PATTERN",'')" +} +$distributionUrlName = $distributionUrl -replace '^.*/','' +$distributionUrlNameMain = $distributionUrlName -replace '\.[^.]*$','' -replace '-bin$','' + +$MAVEN_M2_PATH = "$HOME/.m2" +if ($env:MAVEN_USER_HOME) { + $MAVEN_M2_PATH = "$env:MAVEN_USER_HOME" +} + +if (-not (Test-Path -Path $MAVEN_M2_PATH)) { + New-Item -Path $MAVEN_M2_PATH -ItemType Directory | Out-Null +} + +$MAVEN_WRAPPER_DISTS = $null +if ((Get-Item $MAVEN_M2_PATH).Target[0] -eq $null) { + $MAVEN_WRAPPER_DISTS = "$MAVEN_M2_PATH/wrapper/dists" +} else { + $MAVEN_WRAPPER_DISTS = (Get-Item $MAVEN_M2_PATH).Target[0] + "/wrapper/dists" +} + +$MAVEN_HOME_PARENT = "$MAVEN_WRAPPER_DISTS/$distributionUrlNameMain" +$MAVEN_HOME_NAME = ([System.Security.Cryptography.SHA256]::Create().ComputeHash([byte[]][char[]]$distributionUrl) | ForEach-Object {$_.ToString("x2")}) -join '' +$MAVEN_HOME = "$MAVEN_HOME_PARENT/$MAVEN_HOME_NAME" + +if (Test-Path -Path "$MAVEN_HOME" -PathType Container) { + Write-Verbose "found existing MAVEN_HOME at $MAVEN_HOME" + Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD" + exit $? +} + +if (! $distributionUrlNameMain -or ($distributionUrlName -eq $distributionUrlNameMain)) { + Write-Error "distributionUrl is not valid, must end with *-bin.zip, but found $distributionUrl" +} + +# prepare tmp dir +$TMP_DOWNLOAD_DIR_HOLDER = New-TemporaryFile +$TMP_DOWNLOAD_DIR = New-Item -Itemtype Directory -Path "$TMP_DOWNLOAD_DIR_HOLDER.dir" +$TMP_DOWNLOAD_DIR_HOLDER.Delete() | Out-Null +trap { + if ($TMP_DOWNLOAD_DIR.Exists) { + try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null } + catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" } + } +} + +New-Item -Itemtype Directory -Path "$MAVEN_HOME_PARENT" -Force | Out-Null + +# Download and Install Apache Maven +Write-Verbose "Couldn't find MAVEN_HOME, downloading and installing it ..." +Write-Verbose "Downloading from: $distributionUrl" +Write-Verbose "Downloading to: $TMP_DOWNLOAD_DIR/$distributionUrlName" + +$webclient = New-Object System.Net.WebClient +if ($env:MVNW_USERNAME -and $env:MVNW_PASSWORD) { + $webclient.Credentials = New-Object System.Net.NetworkCredential($env:MVNW_USERNAME, $env:MVNW_PASSWORD) +} +[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12 +$webclient.DownloadFile($distributionUrl, "$TMP_DOWNLOAD_DIR/$distributionUrlName") | Out-Null + +# If specified, validate the SHA-256 sum of the Maven distribution zip file +$distributionSha256Sum = (Get-Content -Raw "$scriptDir/.mvn/wrapper/maven-wrapper.properties" | ConvertFrom-StringData).distributionSha256Sum +if ($distributionSha256Sum) { + if ($USE_MVND) { + Write-Error "Checksum validation is not supported for maven-mvnd. `nPlease disable validation by removing 'distributionSha256Sum' from your maven-wrapper.properties." + } + Import-Module $PSHOME\Modules\Microsoft.PowerShell.Utility -Function Get-FileHash + if ((Get-FileHash "$TMP_DOWNLOAD_DIR/$distributionUrlName" -Algorithm SHA256).Hash.ToLower() -ne $distributionSha256Sum) { + Write-Error "Error: Failed to validate Maven distribution SHA-256, your Maven distribution might be compromised. If you updated your Maven version, you need to update the specified distributionSha256Sum property." + } +} + +# unzip and move +Expand-Archive "$TMP_DOWNLOAD_DIR/$distributionUrlName" -DestinationPath "$TMP_DOWNLOAD_DIR" | Out-Null + +# Find the actual extracted directory name (handles snapshots where filename != directory name) +$actualDistributionDir = "" + +# First try the expected directory name (for regular distributions) +$expectedPath = Join-Path "$TMP_DOWNLOAD_DIR" "$distributionUrlNameMain" +$expectedMvnPath = Join-Path "$expectedPath" "bin/$MVN_CMD" +if ((Test-Path -Path $expectedPath -PathType Container) -and (Test-Path -Path $expectedMvnPath -PathType Leaf)) { + $actualDistributionDir = $distributionUrlNameMain +} + +# If not found, search for any directory with the Maven executable (for snapshots) +if (!$actualDistributionDir) { + Get-ChildItem -Path "$TMP_DOWNLOAD_DIR" -Directory | ForEach-Object { + $testPath = Join-Path $_.FullName "bin/$MVN_CMD" + if (Test-Path -Path $testPath -PathType Leaf) { + $actualDistributionDir = $_.Name + } + } +} + +if (!$actualDistributionDir) { + Write-Error "Could not find Maven distribution directory in extracted archive" +} + +Write-Verbose "Found extracted Maven distribution directory: $actualDistributionDir" +Rename-Item -Path "$TMP_DOWNLOAD_DIR/$actualDistributionDir" -NewName $MAVEN_HOME_NAME | Out-Null +try { + Move-Item -Path "$TMP_DOWNLOAD_DIR/$MAVEN_HOME_NAME" -Destination $MAVEN_HOME_PARENT | Out-Null +} catch { + if (! (Test-Path -Path "$MAVEN_HOME" -PathType Container)) { + Write-Error "fail to move MAVEN_HOME" + } +} finally { + try { Remove-Item $TMP_DOWNLOAD_DIR -Recurse -Force | Out-Null } + catch { Write-Warning "Cannot remove $TMP_DOWNLOAD_DIR" } +} + +Write-Output "MVN_CMD=$MAVEN_HOME/bin/$MVN_CMD" diff --git a/pom.xml b/pom.xml new file mode 100644 index 0000000..9f136a9 --- /dev/null +++ b/pom.xml @@ -0,0 +1,95 @@ + + + 4.0.0 + + org.springframework.boot + spring-boot-starter-parent + 3.5.7 + + + com + virtual-threads-kafka + 0.0.1-SNAPSHOT + virtual-threads-kafka + Reactive kafka backpressure test + + + + + + + + + + + + + + + 21 + + + + org.springframework.boot + spring-boot-starter-web + + + org.springframework.kafka + spring-kafka + + + org.projectlombok + lombok + true + + + org.springframework.boot + spring-boot-starter-test + test + + + org.springframework.kafka + spring-kafka-test + test + + + org.springdoc + springdoc-openapi-starter-webmvc-ui + 2.6.0 + + + + + + + org.apache.maven.plugins + maven-compiler-plugin + + + + org.projectlombok + lombok + + + 21 + 21 + --enable-preview + + + + org.springframework.boot + spring-boot-maven-plugin + + + + org.projectlombok + lombok + + + + + + + + diff --git a/src/main/java/com/virtual_threads_kafka/VirtualThreadsKafkaApplication.java b/src/main/java/com/virtual_threads_kafka/VirtualThreadsKafkaApplication.java new file mode 100644 index 0000000..883ca6c --- /dev/null +++ b/src/main/java/com/virtual_threads_kafka/VirtualThreadsKafkaApplication.java @@ -0,0 +1,13 @@ +package com.virtual_threads_kafka; + +import org.springframework.boot.SpringApplication; +import org.springframework.boot.autoconfigure.SpringBootApplication; + +@SpringBootApplication +public class VirtualThreadsKafkaApplication { + + public static void main(String[] args) { + SpringApplication.run(VirtualThreadsKafkaApplication.class, args); + } + +} diff --git a/src/main/java/com/virtual_threads_kafka/config/CustomExecutorConfig.java b/src/main/java/com/virtual_threads_kafka/config/CustomExecutorConfig.java new file mode 100644 index 0000000..386744f --- /dev/null +++ b/src/main/java/com/virtual_threads_kafka/config/CustomExecutorConfig.java @@ -0,0 +1,32 @@ +package com.virtual_threads_kafka.config; + +import org.springframework.context.annotation.Bean; +import org.springframework.context.annotation.Configuration; + +import java.util.concurrent.ArrayBlockingQueue; +import java.util.concurrent.Executors; +import java.util.concurrent.ThreadFactory; +import java.util.concurrent.ThreadPoolExecutor; +import java.util.concurrent.TimeUnit; + +@Configuration +public class CustomExecutorConfig { + @Bean("processExecutor") + public ThreadPoolExecutor processExecutor() { + ThreadFactory virtualThreadFactory = Thread.ofVirtual().name("test-virtual-thread-", 0).factory(); + return new ThreadPoolExecutor( + 50000, + 50000, + 0L, + TimeUnit.MILLISECONDS, + new ArrayBlockingQueue<>(1000), + virtualThreadFactory, + new ThreadPoolExecutor.CallerRunsPolicy() + ); + } + + @Bean("simpleProcessExecutor") + public java.util.concurrent.ExecutorService simpleProcessExecutor() { + return Executors.newVirtualThreadPerTaskExecutor(); + } +} diff --git a/src/main/java/com/virtual_threads_kafka/config/KafkaConsumerConfig.java b/src/main/java/com/virtual_threads_kafka/config/KafkaConsumerConfig.java new file mode 100644 index 0000000..3cdb7d0 --- /dev/null +++ b/src/main/java/com/virtual_threads_kafka/config/KafkaConsumerConfig.java @@ -0,0 +1,76 @@ +package com.virtual_threads_kafka.config; + +import org.apache.kafka.clients.consumer.ConsumerConfig; +import org.apache.kafka.common.serialization.StringDeserializer; +import org.springframework.beans.factory.annotation.Value; +import org.springframework.context.annotation.Bean; +import org.springframework.context.annotation.Configuration; +import org.springframework.core.task.AsyncTaskExecutor; +import org.springframework.core.task.SimpleAsyncTaskExecutor; +import org.springframework.kafka.annotation.EnableKafka; +import org.springframework.kafka.config.ConcurrentKafkaListenerContainerFactory; +import org.springframework.kafka.core.ConsumerFactory; +import org.springframework.kafka.core.DefaultKafkaConsumerFactory; +import org.springframework.kafka.listener.ContainerProperties; + +import java.util.HashMap; +import java.util.Map; + +@EnableKafka +@Configuration +public class KafkaConsumerConfig { + + @Value("${spring.kafka.bootstrap-servers:localhost:9092}") + private String bootstrapServers; + + @Value("${spring.kafka.consumer.group-id:test-consumer-group}") + private String groupId; + + @Value("${spring.kafka.consumer.concurrency:5}") + private int concurrency; + + @Value("${spring.kafka.consumer.max-poll-records:100}") + private int maxPollRecords; + + @Value("${kafka.executor.core-pool-size:5}") + private int corePoolSize; + + @Value("${kafka.executor.max-pool-size:5}") + private int maxPoolSize; + + @Value("${kafka.executor.queue-capacity:100}") + private int queueCapacity; + + @Bean + public ConsumerFactory consumerFactory() { + Map props = new HashMap<>(); + props.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, bootstrapServers); + props.put(ConsumerConfig.GROUP_ID_CONFIG, groupId); + props.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class); + props.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class); + props.put(ConsumerConfig.AUTO_OFFSET_RESET_CONFIG, "latest"); + props.put(ConsumerConfig.ENABLE_AUTO_COMMIT_CONFIG, false); // Manual commit + props.put(ConsumerConfig.MAX_POLL_RECORDS_CONFIG, maxPollRecords); + props.put(ConsumerConfig.SESSION_TIMEOUT_MS_CONFIG, 30000); + return new DefaultKafkaConsumerFactory<>(props); + } + + @Bean(name = "kafkaExecutor") + public AsyncTaskExecutor kafkaExecutor() { + SimpleAsyncTaskExecutor executor = new SimpleAsyncTaskExecutor(); + executor.setVirtualThreads(true); + executor.setThreadNamePrefix("kafka-vt-"); + return executor; + } + + @Bean + public ConcurrentKafkaListenerContainerFactory kafkaListenerContainerFactory() { + ConcurrentKafkaListenerContainerFactory factory = + new ConcurrentKafkaListenerContainerFactory<>(); + factory.setConsumerFactory(consumerFactory()); + factory.setConcurrency(concurrency); + factory.getContainerProperties().setAckMode(ContainerProperties.AckMode.MANUAL); + factory.getContainerProperties().setListenerTaskExecutor(kafkaExecutor()); + return factory; + } +} \ No newline at end of file diff --git a/src/main/java/com/virtual_threads_kafka/controller/HelloWorldController.java b/src/main/java/com/virtual_threads_kafka/controller/HelloWorldController.java new file mode 100644 index 0000000..db15e5b --- /dev/null +++ b/src/main/java/com/virtual_threads_kafka/controller/HelloWorldController.java @@ -0,0 +1,15 @@ +package com.virtual_threads_kafka.controller; + +import lombok.AllArgsConstructor; +import org.springframework.http.ResponseEntity; +import org.springframework.web.bind.annotation.GetMapping; +import org.springframework.web.bind.annotation.RestController; + +@RestController +@AllArgsConstructor +public class HelloWorldController { + @GetMapping(value = "/greet") + public ResponseEntity greeting() { + return ResponseEntity.ok("Hello World!"); + } +} diff --git a/src/main/java/com/virtual_threads_kafka/listener/KafkaMessageConsumer.java b/src/main/java/com/virtual_threads_kafka/listener/KafkaMessageConsumer.java new file mode 100644 index 0000000..6077303 --- /dev/null +++ b/src/main/java/com/virtual_threads_kafka/listener/KafkaMessageConsumer.java @@ -0,0 +1,54 @@ +//package com.virtual_threads_kafka.listener; +// +//import lombok.RequiredArgsConstructor; +//import lombok.extern.slf4j.Slf4j; +//import org.springframework.kafka.annotation.KafkaListener; +//import org.springframework.kafka.support.Acknowledgment; +//import org.springframework.messaging.handler.annotation.Payload; +//import org.springframework.stereotype.Service; +// +//import java.util.concurrent.ThreadPoolExecutor; +// +//@Slf4j +//@Service +//@RequiredArgsConstructor +//public class KafkaMessageConsumer { +// private final ThreadPoolExecutor processExecutor; +// +// @KafkaListener( +// topics = "test-concurrency", +// groupId = "${spring.kafka.consumer.group-id}", +// containerFactory = "kafkaListenerContainerFactory" +// ) +// public void consume( +// @Payload String message, +// Acknowledgment acknowledgment +// ) { +// try { +// processExecutor.submit(() -> { +// try { +// processMessage(message); +// } catch (InterruptedException e) { +// throw new RuntimeException(e); +// } +// }); +// +// if (acknowledgment != null) { +// acknowledgment.acknowledge(); +// } +// +// } catch (Exception e) { +// log.error("Error processing message", e); +// } +// } +// +// private void processMessage(String message) throws InterruptedException { +// try { +// log.info("Processing message with content: {}, thread:{}", message, Thread.currentThread().getName()); +// Thread.sleep(1000); +// } catch (Exception e) { +// log.error("Error processing message", e); +// throw e; +// } +// } +//} \ No newline at end of file diff --git a/src/main/java/com/virtual_threads_kafka/listener/SemaphoreBasedConsumer.java b/src/main/java/com/virtual_threads_kafka/listener/SemaphoreBasedConsumer.java new file mode 100644 index 0000000..31ad399 --- /dev/null +++ b/src/main/java/com/virtual_threads_kafka/listener/SemaphoreBasedConsumer.java @@ -0,0 +1,67 @@ +package com.virtual_threads_kafka.listener; + +import jakarta.annotation.PostConstruct; +import lombok.RequiredArgsConstructor; +import lombok.extern.slf4j.Slf4j; +import org.springframework.kafka.annotation.KafkaListener; +import org.springframework.kafka.support.Acknowledgment; +import org.springframework.messaging.handler.annotation.Payload; +import org.springframework.stereotype.Service; + +import java.util.concurrent.ArrayBlockingQueue; +import java.util.concurrent.BlockingQueue; +import java.util.concurrent.Semaphore; + +@Slf4j +@Service +@RequiredArgsConstructor +public class SemaphoreBasedConsumer { + Semaphore sem = new Semaphore(5000); // limit active downstream work + BlockingQueue queue = new ArrayBlockingQueue<>(1000); + + @KafkaListener( + topics = "test-concurrency", + groupId = "${spring.kafka.consumer.group-id}", + containerFactory = "kafkaListenerContainerFactory" + ) + public void consume(@Payload String message, Acknowledgment acknowledgment) throws InterruptedException { + queue.put(message); + if (acknowledgment != null) { + acknowledgment.acknowledge(); + } + } + + @PostConstruct + void startWorkers() { + Thread.ofVirtual().name("queue-drainer").start(() -> { + try { + while (true) { + String msg = queue.take(); + sem.acquire(); + Thread.ofVirtual().start(() -> { + try { + processMessage(msg); + } catch (Exception e) { + log.error("Error processing message", e); + } finally { + sem.release(); + } + }); + } + } catch (InterruptedException e) { + Thread.currentThread().interrupt(); + log.info("Queue drainer interrupted, shutting down..."); + } + }); + } + + private void processMessage(String message) throws InterruptedException { + try { + log.info("Processing message with content: {}, thread:{}", message, Thread.currentThread().getName()); + Thread.sleep(1000); + } catch (Exception e) { + log.error("Error processing message", e); + throw e; + } + } +} diff --git a/src/main/resources/application.properties b/src/main/resources/application.properties new file mode 100644 index 0000000..92a2c9c --- /dev/null +++ b/src/main/resources/application.properties @@ -0,0 +1,22 @@ +spring.application.name=virtual-threads-kafka +spring.threads.virtual.enabled=true +server.servlet.context-path=/virtual-threads-kafka + +spring.kafka.bootstrap-servers=192.168.1.118:9092 +spring.kafka.consumer.group-id=test-consumer-group +spring.kafka.consumer.concurrency=2 +spring.kafka.consumer.auto-offset-reset=latest +spring.kafka.consumer.enable-auto-commit=false +spring.kafka.consumer.key-deserializer=org.apache.kafka.common.serialization.StringDeserializer +spring.kafka.consumer.value-deserializer=org.apache.kafka.common.serialization.StringDeserializer +spring.kafka.consumer.max-poll-records=5000 +spring.kafka.consumer.session-timeout-ms=30000 +spring.kafka.consumer.heartbeat-interval-ms=10000 + +kafka.executor.core-pool-size=5 +kafka.executor.max-pool-size=5 +kafka.executor.queue-capacity=100 + +logging.level.com.example.kafka=INFO +logging.level.org.springframework.kafka=INFO +logging.level.org.apache.kafka=INFO \ No newline at end of file diff --git a/src/main/resources/logback-spring.xml b/src/main/resources/logback-spring.xml new file mode 100644 index 0000000..74032ad --- /dev/null +++ b/src/main/resources/logback-spring.xml @@ -0,0 +1,107 @@ + + + + + + + %d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n + + + + + + logs/application.log + + %d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n + + + + + + logs/application-%d{yyyy-MM-dd}.%i.log.gz + + 50MB + + 30 + + 3GB + + + + + + logs/kafka.log + + %d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n + + + logs/kafka-%d{yyyy-MM-dd}.%i.log.gz + 50MB + 30 + 3GB + + + + + + logs/error.log + + ERROR + + + %d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n + + + logs/error-%d{yyyy-MM-dd}.%i.log.gz + 50MB + 30 + 3GB + + + + + + 512 + + + + + 512 + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + diff --git a/src/test/java/com/virtual_threads_kafka/VirtualThreadsKafkaApplicationTests.java b/src/test/java/com/virtual_threads_kafka/VirtualThreadsKafkaApplicationTests.java new file mode 100644 index 0000000..d48bec3 --- /dev/null +++ b/src/test/java/com/virtual_threads_kafka/VirtualThreadsKafkaApplicationTests.java @@ -0,0 +1,13 @@ +package com.virtual_threads_kafka; + +import org.junit.jupiter.api.Test; +import org.springframework.boot.test.context.SpringBootTest; + +@SpringBootTest +class VirtualThreadsKafkaApplicationTests { + + @Test + void contextLoads() { + } + +}