├── .dockerignore ├── .gcloudignore ├── .github └── workflows │ └── mavenpublish.yml ├── .gitignore ├── .mvn └── wrapper │ ├── maven-wrapper.jar │ └── maven-wrapper.properties ├── Dockerfile.checkpoint ├── Dockerfile.k8s ├── Dockerfile.privileged ├── Dockerfile.restore ├── README.md ├── build.gradle ├── cloudbuild-builder.yaml ├── cloudbuild-direct.yaml ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat ├── k8s.yaml ├── mvnw ├── mvnw.cmd ├── pom.xml ├── settings.gradle └── src └── main └── java └── com └── example └── springboot ├── Application.java └── HelloController.java /.dockerignore: -------------------------------------------------------------------------------- 1 | Dockerfile.* 2 | -------------------------------------------------------------------------------- /.gcloudignore: -------------------------------------------------------------------------------- 1 | .git 2 | .gitignore 3 | .github 4 | .mvn 5 | .gradle 6 | gradle 7 | target 8 | 9 | -------------------------------------------------------------------------------- /.github/workflows/mavenpublish.yml: -------------------------------------------------------------------------------- 1 | 2 | name: Maven Package 3 | 4 | on: 5 | push: 6 | workflow_dispatch: 7 | 8 | jobs: 9 | build: 10 | runs-on: ubuntu-latest 11 | timeout-minutes: 5 12 | steps: 13 | - name: Install prerequisites 14 | run: 15 | sudo 16 | DEBIAN_FRONTEND=noninteractive 17 | apt-get -y --no-install-recommends install 18 | siege 19 | 20 | - uses: actions/checkout@v3 21 | 22 | - name: Checkout utils 23 | uses: actions/checkout@v2 24 | with: 25 | repository: CRaC/utils 26 | path: utils 27 | 28 | - run: make -C utils 29 | 30 | - name: Set up JDK 17 31 | uses: actions/setup-java@v2 32 | with: 33 | java-version: 17 34 | distribution: 'zulu' 35 | - uses: actions/cache@v3 36 | with: 37 | path: ~/.m2/repository 38 | key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }} 39 | restore-keys: | 40 | ${{ runner.os }}-maven- 41 | 42 | - run: ./mvnw -B package 43 | 44 | - name: Test on Vanila JDK 45 | run: | 46 | P=$(utils/start-bg.sh \ 47 | -s "Started Application" \ 48 | java -jar target/example-spring-boot-0.0.1-SNAPSHOT.jar) 49 | curl localhost:8080 | grep "Greetings from Spring Boot!" 50 | utils/bench.sh http://localhost:8080 51 | kill $P 52 | 53 | - name: Download JDK 54 | run: | 55 | url=https://cdn.azul.com/zulu/bin/zulu17.44.17-ca-crac-jdk17.0.8-linux_x64.tar.gz 56 | archive=${url##*/} 57 | curl -LO $url 58 | sudo tar -axf $archive 59 | echo JDK=${archive%%.tar.gz} >> $GITHUB_ENV 60 | 61 | - name: Prepare warm checkpoint 62 | run: | 63 | P=$(utils/start-bg.sh \ 64 | -s "Started Application" \ 65 | -e exitcode \ 66 | ${{ env.JDK }}/bin/java \ 67 | -XX:CRaCCheckpointTo=cr \ 68 | -XX:+UnlockDiagnosticVMOptions \ 69 | -XX:+CRTraceStartupTime \ 70 | -Djdk.crac.trace-startup-time=true \ 71 | --add-opens java.base/java.lang=ALL-UNNAMED \ 72 | -jar target/example-spring-boot-0.0.1-SNAPSHOT.jar) 73 | 74 | # warmup the service 75 | utils/bench.sh http://localhost:8080 76 | jcmd $P JDK.checkpoint 77 | [ 137 = $(utils/read-exitcode.sh exitcode) ] 78 | 79 | - name: Test on C/RaC 80 | run: | 81 | P=$(utils/start-bg.sh \ 82 | -s "restore-finish" \ 83 | ${{ env.JDK }}/bin/java -XX:CRaCRestoreFrom=cr) 84 | curl localhost:8080 | grep "Greetings from Spring Boot!" 85 | utils/bench.sh http://localhost:8080 86 | kill $P 87 | 88 | - name: Test C/RaC startup time 89 | run: 90 | timeout 3 bash -c "utils/javatime ; ${{ env.JDK }}/bin/java -XX:CRaCRestoreFrom=cr" 91 | | utils/sel.awk -v from=prestart -v to=restore-finish 92 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | /.idea/ 2 | /build/ 3 | /target/ 4 | /.gradle/ 5 | /cr/ -------------------------------------------------------------------------------- /.mvn/wrapper/maven-wrapper.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/CRaC/example-spring-boot/a11f01ef79792f430159e2d858eebaef7c0f9df1/.mvn/wrapper/maven-wrapper.jar -------------------------------------------------------------------------------- /.mvn/wrapper/maven-wrapper.properties: -------------------------------------------------------------------------------- 1 | distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.9.5/apache-maven-3.9.5-bin.zip 2 | wrapperUrl=https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.2.0/maven-wrapper-3.2.0.jar 3 | -------------------------------------------------------------------------------- /Dockerfile.checkpoint: -------------------------------------------------------------------------------- 1 | ARG BASE_IMAGE=ubuntu:24.04 2 | ARG JDK_NAME=zulu22.32.17-ca-crac-jdk22.0.2-linux_x64 3 | 4 | FROM $BASE_IMAGE AS builder 5 | ARG JDK_NAME 6 | 7 | RUN apt-get update && apt-get install -y wget 8 | RUN wget -O crac-jdk.tar.gz https://cdn.azul.com/zulu/bin/$JDK_NAME.tar.gz 9 | RUN tar zxf ./crac-jdk.tar.gz -C /usr/share 10 | 11 | # End of builder 12 | 13 | FROM $BASE_IMAGE 14 | ARG JDK_NAME 15 | ARG FAT_JAR= 16 | 17 | ENV JDK_NAME=$JDK_NAME 18 | ENV JAVA_HOME=/usr/share/$JDK_NAME 19 | 20 | COPY --from=builder /usr/share/${JDK_NAME} /usr/share/${JDK_NAME} 21 | RUN ln -s $JAVA_HOME/bin/java /bin/ && ln -s $JAVA_HOME/bin/jcmd /bin/ 22 | ADD target/example-spring-boot*.jar /example-spring-boot.jar 23 | ENTRYPOINT [ "java", "-XX:CPUFeatures=generic", "-XX:CRaCCheckpointTo=/cr", "-jar", "/example-spring-boot.jar" ] 24 | 25 | -------------------------------------------------------------------------------- /Dockerfile.k8s: -------------------------------------------------------------------------------- 1 | # syntax=docker/dockerfile:1.3-labs 2 | 3 | FROM example-spring-boot-checkpoint 4 | RUN apt-get update && apt-get install -y ncat 5 | ENV CRAC_FILES_DIR=/cr 6 | 7 | # This script is going to be used in the checkpointing job 8 | COPY <<'EOF' /checkpoint.sh 9 | #!/bin/sh 10 | 11 | mkdir -p $CRAC_FILES_DIR 12 | rm $CRAC_FILES_DIR/* || true 13 | 14 | # After receiving connection on port 1111 trigger the checkpoint (using numeric address to avoid IPv6 problems) 15 | (nc -v -l -p 1111 && jcmd example-spring-boot.jar JDK.checkpoint) & 16 | # we cannot exec java ... because the pod would be marked as failed when it exits 17 | # with exit code 137 after checkpoint 18 | java -XX:CRaCCheckpointTo=$CRAC_FILES_DIR -XX:CRaCMinPid=128 -jar /example-spring-boot.jar & 19 | PID=$! 20 | trap "kill $PID" SIGINT SIGTERM 21 | wait $PID || true 22 | EOF 23 | 24 | COPY <<'EOF' /restore-or-start.sh 25 | #!/bin/sh 26 | 27 | if [ -z "$(ls -A $CRAC_FILES_DIR 2> /dev/null)" ]; then 28 | echo "No checkpoint found, starting the application normally..." 29 | exec java -jar /example-spring-boot.jar 30 | else 31 | echo "Checkpoint is present, restoring the application..." 32 | exec java -XX:CRaCRestoreFrom=$CRAC_FILES_DIR 33 | fi 34 | EOF 35 | 36 | ENTRYPOINT [ "bash" ] 37 | CMD [ "/restore-or-start.sh" ] 38 | -------------------------------------------------------------------------------- /Dockerfile.privileged: -------------------------------------------------------------------------------- 1 | # syntax=docker/dockerfile:1.3-labs 2 | 3 | ### 4 | # This Dockerfile requires priviledged builder and as such cannot be run usin 5 | # regular `docker build ...`. You need to first create a buildx builder and 6 | # then use it to perform the build: 7 | # 8 | # docker buildx create --buildkitd-flags '--allow-insecure-entitlement security.insecure' --name privileged-builder 9 | # docker buildx build --load --builder privileged-builder --allow=security.insecure -f Dockerfile.privileged -t example-spring-boot . 10 | # 11 | ### 12 | 13 | ARG BASE_IMAGE=ubuntu:24.04 14 | ARG JDK_NAME=zulu22.32.17-ca-crac-jdk22.0.2-linux_x64 15 | 16 | FROM $BASE_IMAGE AS builder 17 | ARG JDK_NAME 18 | ENV JAVA_HOME=/usr/share/$JDK_NAME 19 | ENV ENDPOINT=http://localhost:8080 20 | 21 | RUN apt-get update && apt-get install -y curl maven siege wget 22 | RUN wget -O crac-jdk.tar.gz https://cdn.azul.com/zulu/bin/$JDK_NAME.tar.gz 23 | RUN tar zxf ./crac-jdk.tar.gz -C /usr/share 24 | 25 | ADD . /example-spring-boot 26 | RUN cd /example-spring-boot && mvn -B install && mv target/example-spring-boot-0.0.1-SNAPSHOT.jar /example-spring-boot.jar 27 | 28 | RUN --security=insecure < '} 77 | case $link in #( 78 | /*) app_path=$link ;; #( 79 | *) app_path=$APP_HOME$link ;; 80 | esac 81 | done 82 | 83 | APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit 84 | 85 | APP_NAME="Gradle" 86 | APP_BASE_NAME=${0##*/} 87 | 88 | # Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 89 | DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' 90 | 91 | # Use the maximum available, or set MAX_FD != -1 to use that value. 92 | MAX_FD=maximum 93 | 94 | warn () { 95 | echo "$*" 96 | } >&2 97 | 98 | die () { 99 | echo 100 | echo "$*" 101 | echo 102 | exit 1 103 | } >&2 104 | 105 | # OS specific support (must be 'true' or 'false'). 106 | cygwin=false 107 | msys=false 108 | darwin=false 109 | nonstop=false 110 | case "$( uname )" in #( 111 | CYGWIN* ) cygwin=true ;; #( 112 | Darwin* ) darwin=true ;; #( 113 | MSYS* | MINGW* ) msys=true ;; #( 114 | NONSTOP* ) nonstop=true ;; 115 | esac 116 | 117 | CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar 118 | 119 | 120 | # Determine the Java command to use to start the JVM. 121 | if [ -n "$JAVA_HOME" ] ; then 122 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 123 | # IBM's JDK on AIX uses strange locations for the executables 124 | JAVACMD=$JAVA_HOME/jre/sh/java 125 | else 126 | JAVACMD=$JAVA_HOME/bin/java 127 | fi 128 | if [ ! -x "$JAVACMD" ] ; then 129 | die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME 130 | 131 | Please set the JAVA_HOME variable in your environment to match the 132 | location of your Java installation." 133 | fi 134 | else 135 | JAVACMD=java 136 | which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 137 | 138 | Please set the JAVA_HOME variable in your environment to match the 139 | location of your Java installation." 140 | fi 141 | 142 | # Increase the maximum file descriptors if we can. 143 | if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then 144 | case $MAX_FD in #( 145 | max*) 146 | MAX_FD=$( ulimit -H -n ) || 147 | warn "Could not query maximum file descriptor limit" 148 | esac 149 | case $MAX_FD in #( 150 | '' | soft) :;; #( 151 | *) 152 | ulimit -n "$MAX_FD" || 153 | warn "Could not set maximum file descriptor limit to $MAX_FD" 154 | esac 155 | fi 156 | 157 | # Collect all arguments for the java command, stacking in reverse order: 158 | # * args from the command line 159 | # * the main class name 160 | # * -classpath 161 | # * -D...appname settings 162 | # * --module-path (only if needed) 163 | # * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables. 164 | 165 | # For Cygwin or MSYS, switch paths to Windows format before running java 166 | if "$cygwin" || "$msys" ; then 167 | APP_HOME=$( cygpath --path --mixed "$APP_HOME" ) 168 | CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" ) 169 | 170 | JAVACMD=$( cygpath --unix "$JAVACMD" ) 171 | 172 | # Now convert the arguments - kludge to limit ourselves to /bin/sh 173 | for arg do 174 | if 175 | case $arg in #( 176 | -*) false ;; # don't mess with options #( 177 | /?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath 178 | [ -e "$t" ] ;; #( 179 | *) false ;; 180 | esac 181 | then 182 | arg=$( cygpath --path --ignore --mixed "$arg" ) 183 | fi 184 | # Roll the args list around exactly as many times as the number of 185 | # args, so each arg winds up back in the position where it started, but 186 | # possibly modified. 187 | # 188 | # NB: a `for` loop captures its iteration list before it begins, so 189 | # changing the positional parameters here affects neither the number of 190 | # iterations, nor the values presented in `arg`. 191 | shift # remove old arg 192 | set -- "$@" "$arg" # push replacement arg 193 | done 194 | fi 195 | 196 | # Collect all arguments for the java command; 197 | # * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of 198 | # shell script including quotes and variable substitutions, so put them in 199 | # double quotes to make sure that they get re-expanded; and 200 | # * put everything else in single quotes, so that it's not re-expanded. 201 | 202 | set -- \ 203 | "-Dorg.gradle.appname=$APP_BASE_NAME" \ 204 | -classpath "$CLASSPATH" \ 205 | org.gradle.wrapper.GradleWrapperMain \ 206 | "$@" 207 | 208 | # Use "xargs" to parse quoted args. 209 | # 210 | # With -n1 it outputs one arg per line, with the quotes and backslashes removed. 211 | # 212 | # In Bash we could simply go: 213 | # 214 | # readarray ARGS < <( xargs -n1 <<<"$var" ) && 215 | # set -- "${ARGS[@]}" "$@" 216 | # 217 | # but POSIX shell has neither arrays nor command substitution, so instead we 218 | # post-process each arg (as a line of input to sed) to backslash-escape any 219 | # character that might be a shell metacharacter, then use eval to reverse 220 | # that process (while maintaining the separation between arguments), and wrap 221 | # the whole thing up as a single "set" statement. 222 | # 223 | # This will of course break if any of these variables contains a newline or 224 | # an unmatched quote. 225 | # 226 | 227 | eval "set -- $( 228 | printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" | 229 | xargs -n1 | 230 | sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' | 231 | tr '\n' ' ' 232 | )" '"$@"' 233 | 234 | exec "$JAVACMD" "$@" 235 | -------------------------------------------------------------------------------- /gradlew.bat: -------------------------------------------------------------------------------- 1 | @rem 2 | @rem Copyright 2015 the original author or authors. 3 | @rem 4 | @rem Licensed under the Apache License, Version 2.0 (the "License"); 5 | @rem you may not use this file except in compliance with the License. 6 | @rem You may obtain a copy of the License at 7 | @rem 8 | @rem https://www.apache.org/licenses/LICENSE-2.0 9 | @rem 10 | @rem Unless required by applicable law or agreed to in writing, software 11 | @rem distributed under the License is distributed on an "AS IS" BASIS, 12 | @rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 | @rem See the License for the specific language governing permissions and 14 | @rem limitations under the License. 15 | @rem 16 | 17 | @if "%DEBUG%" == "" @echo off 18 | @rem ########################################################################## 19 | @rem 20 | @rem Gradle startup script for Windows 21 | @rem 22 | @rem ########################################################################## 23 | 24 | @rem Set local scope for the variables with windows NT shell 25 | if "%OS%"=="Windows_NT" setlocal 26 | 27 | set DIRNAME=%~dp0 28 | if "%DIRNAME%" == "" set DIRNAME=. 29 | set APP_BASE_NAME=%~n0 30 | set APP_HOME=%DIRNAME% 31 | 32 | @rem Resolve any "." and ".." in APP_HOME to make it shorter. 33 | for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi 34 | 35 | @rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. 36 | set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m" 37 | 38 | @rem Find java.exe 39 | if defined JAVA_HOME goto findJavaFromJavaHome 40 | 41 | set JAVA_EXE=java.exe 42 | %JAVA_EXE% -version >NUL 2>&1 43 | if "%ERRORLEVEL%" == "0" goto execute 44 | 45 | echo. 46 | echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 47 | echo. 48 | echo Please set the JAVA_HOME variable in your environment to match the 49 | echo location of your Java installation. 50 | 51 | goto fail 52 | 53 | :findJavaFromJavaHome 54 | set JAVA_HOME=%JAVA_HOME:"=% 55 | set JAVA_EXE=%JAVA_HOME%/bin/java.exe 56 | 57 | if exist "%JAVA_EXE%" goto execute 58 | 59 | echo. 60 | echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 61 | echo. 62 | echo Please set the JAVA_HOME variable in your environment to match the 63 | echo location of your Java installation. 64 | 65 | goto fail 66 | 67 | :execute 68 | @rem Setup the command line 69 | 70 | set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar 71 | 72 | 73 | @rem Execute Gradle 74 | "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %* 75 | 76 | :end 77 | @rem End local scope for the variables with windows NT shell 78 | if "%ERRORLEVEL%"=="0" goto mainEnd 79 | 80 | :fail 81 | rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of 82 | rem the _cmd.exe /c_ return code! 83 | if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 84 | exit /b 1 85 | 86 | :mainEnd 87 | if "%OS%"=="Windows_NT" endlocal 88 | 89 | :omega 90 | -------------------------------------------------------------------------------- /k8s.yaml: -------------------------------------------------------------------------------- 1 | apiVersion: v1 2 | kind: PersistentVolumeClaim 3 | metadata: 4 | name: crac-image 5 | namespace: example 6 | spec: 7 | accessModes: 8 | - ReadWriteOnce 9 | resources: 10 | requests: 11 | storage: 500Mi 12 | storageClassName: "standard" 13 | --- 14 | apiVersion: batch/v1 15 | kind: Job 16 | metadata: 17 | name: create-checkpoint 18 | namespace: example 19 | spec: 20 | template: 21 | spec: 22 | containers: 23 | - name: workload 24 | image: example-spring-boot-k8s 25 | imagePullPolicy: IfNotPresent 26 | env: 27 | - name: CRAC_FILES_DIR 28 | value: /var/crac/image 29 | args: 30 | - /checkpoint.sh 31 | securityContext: 32 | capabilities: 33 | add: 34 | - CHECKPOINT_RESTORE 35 | - SYS_PTRACE 36 | volumeMounts: 37 | - mountPath: /var/crac 38 | name: crac-image 39 | - name: warmup 40 | image: jstarcher/siege 41 | imagePullPolicy: IfNotPresent 42 | command: 43 | - /bin/sh 44 | - -c 45 | - | 46 | while ! nc -z localhost 8080; do sleep 0.1; done 47 | siege -c 1 -r 100000 -b http://localhost:8080 48 | echo "Do checkpoint, please" | nc -v localhost 1111 49 | restartPolicy: Never 50 | volumes: 51 | - name: crac-image 52 | persistentVolumeClaim: 53 | claimName: crac-image 54 | --- 55 | apiVersion: apps/v1 56 | kind: Deployment 57 | metadata: 58 | name: example-spring-boot 59 | namespace: example 60 | labels: 61 | app: example-spring-boot 62 | spec: 63 | replicas: 1 64 | selector: 65 | matchLabels: 66 | app: example-spring-boot 67 | template: 68 | metadata: 69 | labels: 70 | app: example-spring-boot 71 | spec: 72 | containers: 73 | - name: workload 74 | image: example-spring-boot-k8s 75 | imagePullPolicy: IfNotPresent 76 | env: 77 | - name: CRAC_FILES_DIR 78 | value: /var/crac/image 79 | ports: 80 | - containerPort: 8080 81 | volumeMounts: 82 | - mountPath: /var/crac 83 | name: crac-image 84 | volumes: 85 | - name: crac-image 86 | persistentVolumeClaim: 87 | claimName: crac-image 88 | readOnly: true 89 | -------------------------------------------------------------------------------- /mvnw: -------------------------------------------------------------------------------- 1 | #!/bin/sh 2 | # ---------------------------------------------------------------------------- 3 | # Licensed to the Apache Software Foundation (ASF) under one 4 | # or more contributor license agreements. See the NOTICE file 5 | # distributed with this work for additional information 6 | # regarding copyright ownership. The ASF licenses this file 7 | # to you under the Apache License, Version 2.0 (the 8 | # "License"); you may not use this file except in compliance 9 | # with the License. You may obtain a copy of the License at 10 | # 11 | # http://www.apache.org/licenses/LICENSE-2.0 12 | # 13 | # Unless required by applicable law or agreed to in writing, 14 | # software distributed under the License is distributed on an 15 | # "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 16 | # KIND, either express or implied. See the License for the 17 | # specific language governing permissions and limitations 18 | # under the License. 19 | # ---------------------------------------------------------------------------- 20 | 21 | # ---------------------------------------------------------------------------- 22 | # Maven2 Start Up Batch script 23 | # 24 | # Required ENV vars: 25 | # ------------------ 26 | # JAVA_HOME - location of a JDK home dir 27 | # 28 | # Optional ENV vars 29 | # ----------------- 30 | # M2_HOME - location of maven2's installed home dir 31 | # MAVEN_OPTS - parameters passed to the Java VM when running Maven 32 | # e.g. to debug Maven itself, use 33 | # set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000 34 | # MAVEN_SKIP_RC - flag to disable loading of mavenrc files 35 | # ---------------------------------------------------------------------------- 36 | 37 | if [ -z "$MAVEN_SKIP_RC" ] ; then 38 | 39 | if [ -f /etc/mavenrc ] ; then 40 | . /etc/mavenrc 41 | fi 42 | 43 | if [ -f "$HOME/.mavenrc" ] ; then 44 | . "$HOME/.mavenrc" 45 | fi 46 | 47 | fi 48 | 49 | # OS specific support. $var _must_ be set to either true or false. 50 | cygwin=false; 51 | darwin=false; 52 | mingw=false 53 | case "`uname`" in 54 | CYGWIN*) cygwin=true ;; 55 | MINGW*) mingw=true;; 56 | Darwin*) darwin=true 57 | # Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home 58 | # See https://developer.apple.com/library/mac/qa/qa1170/_index.html 59 | if [ -z "$JAVA_HOME" ]; then 60 | if [ -x "/usr/libexec/java_home" ]; then 61 | export JAVA_HOME="`/usr/libexec/java_home`" 62 | else 63 | export JAVA_HOME="/Library/Java/Home" 64 | fi 65 | fi 66 | ;; 67 | esac 68 | 69 | if [ -z "$JAVA_HOME" ] ; then 70 | if [ -r /etc/gentoo-release ] ; then 71 | JAVA_HOME=`java-config --jre-home` 72 | fi 73 | fi 74 | 75 | if [ -z "$M2_HOME" ] ; then 76 | ## resolve links - $0 may be a link to maven's home 77 | PRG="$0" 78 | 79 | # need this for relative symlinks 80 | while [ -h "$PRG" ] ; do 81 | ls=`ls -ld "$PRG"` 82 | link=`expr "$ls" : '.*-> \(.*\)$'` 83 | if expr "$link" : '/.*' > /dev/null; then 84 | PRG="$link" 85 | else 86 | PRG="`dirname "$PRG"`/$link" 87 | fi 88 | done 89 | 90 | saveddir=`pwd` 91 | 92 | M2_HOME=`dirname "$PRG"`/.. 93 | 94 | # make it fully qualified 95 | M2_HOME=`cd "$M2_HOME" && pwd` 96 | 97 | cd "$saveddir" 98 | # echo Using m2 at $M2_HOME 99 | fi 100 | 101 | # For Cygwin, ensure paths are in UNIX format before anything is touched 102 | if $cygwin ; then 103 | [ -n "$M2_HOME" ] && 104 | M2_HOME=`cygpath --unix "$M2_HOME"` 105 | [ -n "$JAVA_HOME" ] && 106 | JAVA_HOME=`cygpath --unix "$JAVA_HOME"` 107 | [ -n "$CLASSPATH" ] && 108 | CLASSPATH=`cygpath --path --unix "$CLASSPATH"` 109 | fi 110 | 111 | # For Mingw, ensure paths are in UNIX format before anything is touched 112 | if $mingw ; then 113 | [ -n "$M2_HOME" ] && 114 | M2_HOME="`(cd "$M2_HOME"; pwd)`" 115 | [ -n "$JAVA_HOME" ] && 116 | JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`" 117 | fi 118 | 119 | if [ -z "$JAVA_HOME" ]; then 120 | javaExecutable="`which javac`" 121 | if [ -n "$javaExecutable" ] && ! [ "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then 122 | # readlink(1) is not available as standard on Solaris 10. 123 | readLink=`which readlink` 124 | if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then 125 | if $darwin ; then 126 | javaHome="`dirname \"$javaExecutable\"`" 127 | javaExecutable="`cd \"$javaHome\" && pwd -P`/javac" 128 | else 129 | javaExecutable="`readlink -f \"$javaExecutable\"`" 130 | fi 131 | javaHome="`dirname \"$javaExecutable\"`" 132 | javaHome=`expr "$javaHome" : '\(.*\)/bin'` 133 | JAVA_HOME="$javaHome" 134 | export JAVA_HOME 135 | fi 136 | fi 137 | fi 138 | 139 | if [ -z "$JAVACMD" ] ; then 140 | if [ -n "$JAVA_HOME" ] ; then 141 | if [ -x "$JAVA_HOME/jre/sh/java" ] ; then 142 | # IBM's JDK on AIX uses strange locations for the executables 143 | JAVACMD="$JAVA_HOME/jre/sh/java" 144 | else 145 | JAVACMD="$JAVA_HOME/bin/java" 146 | fi 147 | else 148 | JAVACMD="`which java`" 149 | fi 150 | fi 151 | 152 | if [ ! -x "$JAVACMD" ] ; then 153 | echo "Error: JAVA_HOME is not defined correctly." >&2 154 | echo " We cannot execute $JAVACMD" >&2 155 | exit 1 156 | fi 157 | 158 | if [ -z "$JAVA_HOME" ] ; then 159 | echo "Warning: JAVA_HOME environment variable is not set." 160 | fi 161 | 162 | CLASSWORLDS_LAUNCHER=org.codehaus.plexus.classworlds.launcher.Launcher 163 | 164 | # traverses directory structure from process work directory to filesystem root 165 | # first directory with .mvn subdirectory is considered project base directory 166 | find_maven_basedir() { 167 | 168 | if [ -z "$1" ] 169 | then 170 | echo "Path not specified to find_maven_basedir" 171 | return 1 172 | fi 173 | 174 | basedir="$1" 175 | wdir="$1" 176 | while [ "$wdir" != '/' ] ; do 177 | if [ -d "$wdir"/.mvn ] ; then 178 | basedir=$wdir 179 | break 180 | fi 181 | # workaround for JBEAP-8937 (on Solaris 10/Sparc) 182 | if [ -d "${wdir}" ]; then 183 | wdir=`cd "$wdir/.."; pwd` 184 | fi 185 | # end of workaround 186 | done 187 | echo "${basedir}" 188 | } 189 | 190 | # concatenates all lines of a file 191 | concat_lines() { 192 | if [ -f "$1" ]; then 193 | echo "$(tr -s '\n' ' ' < "$1")" 194 | fi 195 | } 196 | 197 | BASE_DIR=`find_maven_basedir "$(pwd)"` 198 | if [ -z "$BASE_DIR" ]; then 199 | exit 1; 200 | fi 201 | 202 | ########################################################################################## 203 | # Extension to allow automatically downloading the maven-wrapper.jar from Maven-central 204 | # This allows using the maven wrapper in projects that prohibit checking in binary data. 205 | ########################################################################################## 206 | if [ -r "$BASE_DIR/.mvn/wrapper/maven-wrapper.jar" ]; then 207 | if [ "$MVNW_VERBOSE" = true ]; then 208 | echo "Found .mvn/wrapper/maven-wrapper.jar" 209 | fi 210 | else 211 | if [ "$MVNW_VERBOSE" = true ]; then 212 | echo "Couldn't find .mvn/wrapper/maven-wrapper.jar, downloading it ..." 213 | fi 214 | if [ "$MVNW_REPOURL" = true]; then 215 | jarUrl="$MVNW_REPOURL/io/takari/maven-wrapper/0.5.2/maven-wrapper-0.5.2.jar" 216 | else 217 | jarUrl="https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.2/maven-wrapper-0.5.2.jar" 218 | fi 219 | while IFS="=" read key value; do 220 | case "$key" in (wrapperUrl) jarUrl="$value"; break ;; 221 | esac 222 | done < "$BASE_DIR/.mvn/wrapper/maven-wrapper.properties" 223 | if [ "$MVNW_VERBOSE" = true ]; then 224 | echo "Downloading from: $jarUrl" 225 | fi 226 | wrapperJarPath="$BASE_DIR/.mvn/wrapper/maven-wrapper.jar" 227 | if $cygwin; then 228 | wrapperJarPath=`cygpath --path --windows "$wrapperJarPath"` 229 | fi 230 | 231 | if command -v wget > /dev/null; then 232 | if [ "$MVNW_VERBOSE" = true ]; then 233 | echo "Found wget ... using wget" 234 | fi 235 | if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then 236 | wget "$jarUrl" -O "$wrapperJarPath" 237 | else 238 | wget --http-user=$MVNW_USERNAME --http-password=$MVNW_PASSWORD "$jarUrl" -O "$wrapperJarPath" 239 | fi 240 | elif command -v curl > /dev/null; then 241 | if [ "$MVNW_VERBOSE" = true ]; then 242 | echo "Found curl ... using curl" 243 | fi 244 | if [ -z "$MVNW_USERNAME" ] || [ -z "$MVNW_PASSWORD" ]; then 245 | curl -o "$wrapperJarPath" "$jarUrl" -f 246 | else 247 | curl --user $MVNW_USERNAME:$MVNW_PASSWORD -o "$wrapperJarPath" "$jarUrl" -f 248 | fi 249 | 250 | else 251 | if [ "$MVNW_VERBOSE" = true ]; then 252 | echo "Falling back to using Java to download" 253 | fi 254 | javaClass="$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.java" 255 | # For Cygwin, switch paths to Windows format before running javac 256 | if $cygwin; then 257 | javaClass=`cygpath --path --windows "$javaClass"` 258 | fi 259 | if [ -e "$javaClass" ]; then 260 | if [ ! -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then 261 | if [ "$MVNW_VERBOSE" = true ]; then 262 | echo " - Compiling MavenWrapperDownloader.java ..." 263 | fi 264 | # Compiling the Java class 265 | ("$JAVA_HOME/bin/javac" "$javaClass") 266 | fi 267 | if [ -e "$BASE_DIR/.mvn/wrapper/MavenWrapperDownloader.class" ]; then 268 | # Running the downloader 269 | if [ "$MVNW_VERBOSE" = true ]; then 270 | echo " - Running MavenWrapperDownloader.java ..." 271 | fi 272 | ("$JAVA_HOME/bin/java" -cp .mvn/wrapper MavenWrapperDownloader "$MAVEN_PROJECTBASEDIR") 273 | fi 274 | fi 275 | fi 276 | fi 277 | ########################################################################################## 278 | # End of extension 279 | ########################################################################################## 280 | 281 | export MAVEN_PROJECTBASEDIR=${MAVEN_BASEDIR:-"$BASE_DIR"} 282 | if [ "$MVNW_VERBOSE" = true ]; then 283 | echo $MAVEN_PROJECTBASEDIR 284 | fi 285 | MAVEN_OPTS="$(concat_lines "$MAVEN_PROJECTBASEDIR/.mvn/jvm.config") $MAVEN_OPTS" 286 | 287 | # For Cygwin, switch paths to Windows format before running java 288 | if $cygwin; then 289 | [ -n "$M2_HOME" ] && 290 | M2_HOME=`cygpath --path --windows "$M2_HOME"` 291 | [ -n "$JAVA_HOME" ] && 292 | JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"` 293 | [ -n "$CLASSPATH" ] && 294 | CLASSPATH=`cygpath --path --windows "$CLASSPATH"` 295 | [ -n "$MAVEN_PROJECTBASEDIR" ] && 296 | MAVEN_PROJECTBASEDIR=`cygpath --path --windows "$MAVEN_PROJECTBASEDIR"` 297 | fi 298 | 299 | WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain 300 | 301 | exec "$JAVACMD" \ 302 | $MAVEN_OPTS \ 303 | -classpath "$MAVEN_PROJECTBASEDIR/.mvn/wrapper/maven-wrapper.jar" \ 304 | "-Dmaven.home=${M2_HOME}" "-Dmaven.multiModuleProjectDirectory=${MAVEN_PROJECTBASEDIR}" \ 305 | ${WRAPPER_LAUNCHER} $MAVEN_CONFIG "$@" 306 | -------------------------------------------------------------------------------- /mvnw.cmd: -------------------------------------------------------------------------------- 1 | @REM ---------------------------------------------------------------------------- 2 | @REM Licensed to the Apache Software Foundation (ASF) under one 3 | @REM or more contributor license agreements. See the NOTICE file 4 | @REM distributed with this work for additional information 5 | @REM regarding copyright ownership. The ASF licenses this file 6 | @REM to you under the Apache License, Version 2.0 (the 7 | @REM "License"); you may not use this file except in compliance 8 | @REM with the License. You may obtain a copy of the License at 9 | @REM 10 | @REM http://www.apache.org/licenses/LICENSE-2.0 11 | @REM 12 | @REM Unless required by applicable law or agreed to in writing, 13 | @REM software distributed under the License is distributed on an 14 | @REM "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 15 | @REM KIND, either express or implied. See the License for the 16 | @REM specific language governing permissions and limitations 17 | @REM under the License. 18 | @REM ---------------------------------------------------------------------------- 19 | 20 | @REM ---------------------------------------------------------------------------- 21 | @REM Maven2 Start Up Batch script 22 | @REM 23 | @REM Required ENV vars: 24 | @REM JAVA_HOME - location of a JDK home dir 25 | @REM 26 | @REM Optional ENV vars 27 | @REM M2_HOME - location of maven2's installed home dir 28 | @REM MAVEN_BATCH_ECHO - set to 'on' to enable the echoing of the batch commands 29 | @REM MAVEN_BATCH_PAUSE - set to 'on' to wait for a key stroke before ending 30 | @REM MAVEN_OPTS - parameters passed to the Java VM when running Maven 31 | @REM e.g. to debug Maven itself, use 32 | @REM set MAVEN_OPTS=-Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=y,address=8000 33 | @REM MAVEN_SKIP_RC - flag to disable loading of mavenrc files 34 | @REM ---------------------------------------------------------------------------- 35 | 36 | @REM Begin all REM lines with '@' in case MAVEN_BATCH_ECHO is 'on' 37 | @echo off 38 | @REM set title of command window 39 | title %0 40 | @REM enable echoing my setting MAVEN_BATCH_ECHO to 'on' 41 | @if "%MAVEN_BATCH_ECHO%" == "on" echo %MAVEN_BATCH_ECHO% 42 | 43 | @REM set %HOME% to equivalent of $HOME 44 | if "%HOME%" == "" (set "HOME=%HOMEDRIVE%%HOMEPATH%") 45 | 46 | @REM Execute a user defined script before this one 47 | if not "%MAVEN_SKIP_RC%" == "" goto skipRcPre 48 | @REM check for pre script, once with legacy .bat ending and once with .cmd ending 49 | if exist "%HOME%\mavenrc_pre.bat" call "%HOME%\mavenrc_pre.bat" 50 | if exist "%HOME%\mavenrc_pre.cmd" call "%HOME%\mavenrc_pre.cmd" 51 | :skipRcPre 52 | 53 | @setlocal 54 | 55 | set ERROR_CODE=0 56 | 57 | @REM To isolate internal variables from possible post scripts, we use another setlocal 58 | @setlocal 59 | 60 | @REM ==== START VALIDATION ==== 61 | if not "%JAVA_HOME%" == "" goto OkJHome 62 | 63 | echo. 64 | echo Error: JAVA_HOME not found in your environment. >&2 65 | echo Please set the JAVA_HOME variable in your environment to match the >&2 66 | echo location of your Java installation. >&2 67 | echo. 68 | goto error 69 | 70 | :OkJHome 71 | if exist "%JAVA_HOME%\bin\java.exe" goto init 72 | 73 | echo. 74 | echo Error: JAVA_HOME is set to an invalid directory. >&2 75 | echo JAVA_HOME = "%JAVA_HOME%" >&2 76 | echo Please set the JAVA_HOME variable in your environment to match the >&2 77 | echo location of your Java installation. >&2 78 | echo. 79 | goto error 80 | 81 | @REM ==== END VALIDATION ==== 82 | 83 | :init 84 | 85 | @REM Find the project base dir, i.e. the directory that contains the folder ".mvn". 86 | @REM Fallback to current working directory if not found. 87 | 88 | set MAVEN_PROJECTBASEDIR=%MAVEN_BASEDIR% 89 | IF NOT "%MAVEN_PROJECTBASEDIR%"=="" goto endDetectBaseDir 90 | 91 | set EXEC_DIR=%CD% 92 | set WDIR=%EXEC_DIR% 93 | :findBaseDir 94 | IF EXIST "%WDIR%"\.mvn goto baseDirFound 95 | cd .. 96 | IF "%WDIR%"=="%CD%" goto baseDirNotFound 97 | set WDIR=%CD% 98 | goto findBaseDir 99 | 100 | :baseDirFound 101 | set MAVEN_PROJECTBASEDIR=%WDIR% 102 | cd "%EXEC_DIR%" 103 | goto endDetectBaseDir 104 | 105 | :baseDirNotFound 106 | set MAVEN_PROJECTBASEDIR=%EXEC_DIR% 107 | cd "%EXEC_DIR%" 108 | 109 | :endDetectBaseDir 110 | 111 | IF NOT EXIST "%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config" goto endReadAdditionalConfig 112 | 113 | @setlocal EnableExtensions EnableDelayedExpansion 114 | for /F "usebackq delims=" %%a in ("%MAVEN_PROJECTBASEDIR%\.mvn\jvm.config") do set JVM_CONFIG_MAVEN_PROPS=!JVM_CONFIG_MAVEN_PROPS! %%a 115 | @endlocal & set JVM_CONFIG_MAVEN_PROPS=%JVM_CONFIG_MAVEN_PROPS% 116 | 117 | :endReadAdditionalConfig 118 | 119 | SET MAVEN_JAVA_EXE="%JAVA_HOME%\bin\java.exe" 120 | set WRAPPER_JAR="%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.jar" 121 | set WRAPPER_LAUNCHER=org.apache.maven.wrapper.MavenWrapperMain 122 | 123 | set DOWNLOAD_URL="https://repo.maven.apache.org/maven2/io/takari/maven-wrapper/0.5.2/maven-wrapper-0.5.2.jar" 124 | 125 | FOR /F "tokens=1,2 delims==" %%A IN ("%MAVEN_PROJECTBASEDIR%\.mvn\wrapper\maven-wrapper.properties") DO ( 126 | IF "%%A"=="wrapperUrl" SET DOWNLOAD_URL=%%B 127 | ) 128 | 129 | @REM Extension to allow automatically downloading the maven-wrapper.jar from Maven-central 130 | @REM This allows using the maven wrapper in projects that prohibit checking in binary data. 131 | if exist %WRAPPER_JAR% ( 132 | echo Found %WRAPPER_JAR% 133 | ) else ( 134 | if not "%MVNW_REPOURL%" == "" ( 135 | SET DOWNLOAD_URL="%MVNW_REPOURL%/io/takari/maven-wrapper/0.5.2/maven-wrapper-0.5.2.jar" 136 | ) 137 | echo Couldn't find %WRAPPER_JAR%, downloading it ... 138 | echo Downloading from: %DOWNLOAD_URL% 139 | 140 | powershell -Command "&{"^ 141 | "$webclient = new-object System.Net.WebClient;"^ 142 | "if (-not ([string]::IsNullOrEmpty('%MVNW_USERNAME%') -and [string]::IsNullOrEmpty('%MVNW_PASSWORD%'))) {"^ 143 | "$webclient.Credentials = new-object System.Net.NetworkCredential('%MVNW_USERNAME%', '%MVNW_PASSWORD%');"^ 144 | "}"^ 145 | "[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12; $webclient.DownloadFile('%DOWNLOAD_URL%', '%WRAPPER_JAR%')"^ 146 | "}" 147 | echo Finished downloading %WRAPPER_JAR% 148 | ) 149 | @REM End of extension 150 | 151 | %MAVEN_JAVA_EXE% %JVM_CONFIG_MAVEN_PROPS% %MAVEN_OPTS% %MAVEN_DEBUG_OPTS% -classpath %WRAPPER_JAR% "-Dmaven.multiModuleProjectDirectory=%MAVEN_PROJECTBASEDIR%" %WRAPPER_LAUNCHER% %MAVEN_CONFIG% %* 152 | if ERRORLEVEL 1 goto error 153 | goto end 154 | 155 | :error 156 | set ERROR_CODE=1 157 | 158 | :end 159 | @endlocal & set ERROR_CODE=%ERROR_CODE% 160 | 161 | if not "%MAVEN_SKIP_RC%" == "" goto skipRcPost 162 | @REM check for post script, once with legacy .bat ending and once with .cmd ending 163 | if exist "%HOME%\mavenrc_post.bat" call "%HOME%\mavenrc_post.bat" 164 | if exist "%HOME%\mavenrc_post.cmd" call "%HOME%\mavenrc_post.cmd" 165 | :skipRcPost 166 | 167 | @REM pause the script if MAVEN_BATCH_PAUSE is set to 'on' 168 | if "%MAVEN_BATCH_PAUSE%" == "on" pause 169 | 170 | if "%MAVEN_TERMINATE_CMD%" == "on" exit %ERROR_CODE% 171 | 172 | exit /B %ERROR_CODE% 173 | -------------------------------------------------------------------------------- /pom.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 4.0.0 5 | 6 | org.springframework.boot 7 | spring-boot-starter-parent 8 | 3.2.0 9 | 10 | 11 | com.example 12 | example-spring-boot 13 | 0.0.1-SNAPSHOT 14 | example-spring-boot 15 | Demo project for Spring Boot 16 | 17 | 17 18 | 19 | 20 | 21 | org.springframework.boot 22 | spring-boot-starter-web 23 | 24 | 25 | org.crac 26 | crac 27 | 28 | 29 | 30 | org.springframework.boot 31 | spring-boot-starter-test 32 | test 33 | 34 | 35 | 36 | 37 | 38 | 39 | org.springframework.boot 40 | spring-boot-maven-plugin 41 | 42 | 43 | 44 | 45 | 46 | -------------------------------------------------------------------------------- /settings.gradle: -------------------------------------------------------------------------------- 1 | rootProject.name = 'example-spring-boot' 2 | -------------------------------------------------------------------------------- /src/main/java/com/example/springboot/Application.java: -------------------------------------------------------------------------------- 1 | package com.example.springboot; 2 | 3 | import java.util.Arrays; 4 | 5 | import org.springframework.boot.SpringApplication; 6 | import org.springframework.boot.autoconfigure.SpringBootApplication; 7 | import org.springframework.context.ApplicationContext; 8 | 9 | @SpringBootApplication 10 | public class Application { 11 | 12 | public static void main(String[] args) { 13 | ApplicationContext ctx = SpringApplication.run(Application.class, args); 14 | } 15 | 16 | } 17 | -------------------------------------------------------------------------------- /src/main/java/com/example/springboot/HelloController.java: -------------------------------------------------------------------------------- 1 | package com.example.springboot; 2 | 3 | import org.springframework.web.bind.annotation.GetMapping; 4 | import org.springframework.web.bind.annotation.RestController; 5 | 6 | @RestController 7 | public class HelloController { 8 | 9 | @GetMapping("/") 10 | public String index() { 11 | return "Greetings from Spring Boot!"; 12 | } 13 | 14 | } 15 | --------------------------------------------------------------------------------