Update sofaboot demo with openjdk 8 option

Signed-off-by: Zheng, Qi <huaiqing.zq@antgroup.com>

demos/sofaboot/README.md

@@ -3,11 +3,26 @@
 This project demonstrates how to execute an unmodified sofaboot projects with Occlum.
 
 1. Download and build sofaboot project
+
+* Use openjdk 8
+```
+./download_compile_sofaboot.sh jdk8
+```
+
+* Use openjdk 11
 ```
 ./download_compile_sofaboot.sh
 ```
 
+
 2. Run `sofaboot sample standard web` on Occlum
+
+* Run with openjdk 8
+```
+./run_sofaboot_on_occlum_jdk8.sh
+```
+
+* Run with openjdk 11
 ```
 ./run_sofaboot_on_occlum.sh
 ```

demos/sofaboot/download_compile_sofaboot.sh

@@ -1,7 +1,23 @@
 #!/bin/bash
+set -e
+
+if [[ $1 == "jdk8" ]]; then
+    echo ""
+    echo "*** Build sofaboot demo with openjdk 8 ***"
+    echo "*** Make sure openjdk 8 is installed ***"
+    mvn -v | grep "java-8"
+else
+    echo ""
+    echo "*** Build sofaboot demo with openjdk 11 ***"
+    echo "*** Make sure openjdk 11 is installed ***"
+    mvn -v | grep "java-11"
+fi
+
 if [ ! -d "sofa-boot-guides" ]; then
     git clone https://github.com/sofastack-guides/sofa-boot-guides.git
 fi
+
 cd sofa-boot-guides/sofaboot-sample-standard/
+mvn clean
 mvn compile
 mvn package

demos/sofaboot/run_sofaboot_on_occlum_jdk8.sh

@@ -0,0 +1,47 @@
+#!/bin/bash
+set -e
+
+BLUE='\033[1;34m'
+NC='\033[0m'
+
+check_file_exist() {
+    file=$1
+    if [ ! -f ${file} ];then
+        echo "Error: cannot stat file '${file}'"
+        echo "Please see README and build it"
+        exit 1
+    fi
+}
+
+init_instance() {
+    # Init Occlum instance
+    rm -rf occlum_instance && occlum new occlum_instance
+    cd occlum_instance
+    new_json="$(jq '.resource_limits.user_space_size = "1680MB" |
+                .resource_limits.kernel_space_heap_size="64MB" |
+                .resource_limits.max_num_of_threads = 64 |
+                .process.default_heap_size = "256MB" |
+                .process.default_mmap_size = "1400MB" |
+                .entry_points = [ "/usr/lib/jvm/java-1.8-openjdk/jre/bin" ] |
+                .env.default = [ "LD_LIBRARY_PATH=/usr/lib/jvm/java-1.8-openjdk/jre/lib:/usr/lib/jvm/java-1.8-openjdk/lib" ]' Occlum.json)" && \
+    echo "${new_json}" > Occlum.json
+}
+
+build_sofa() {
+    # Copy JVM and JAR file into Occlum instance and build
+    rm -rf image
+    copy_bom -f ../sofaboot_jdk8.yaml --root image --include-dir /opt/occlum/etc/template
+    occlum build
+}
+
+run_sofa() {
+    jar_path=./sofa-boot-guides/sofaboot-sample-standard/target/boot/sofaboot-sample-standard-web-0.0.1-SNAPSHOT-executable.jar
+    check_file_exist ${jar_path}
+    jar_file=`basename "${jar_path}"`
+    init_instance
+    build_sofa
+    echo -e "${BLUE}occlum run SOFABoot demo${NC}"
+    occlum run /usr/lib/jvm/java-1.8-openjdk/jre/bin/java -Xmx512m -XX:-UseCompressedOops -XX:MaxMetaspaceSize=64m -Dos.name=Linux -jar /usr/lib/spring/${jar_file} &
+}
+
+run_sofa

demos/sofaboot/sofaboot_jdk8.yaml

@@ -0,0 +1,9 @@
+includes: 
+  - base.yaml
+  - java-8-openjdk.yaml
+targets: 
+  # copy sofaboot jar
+  - target: /usr/lib/spring
+    copy: 
+      - files: 
+        - ../sofa-boot-guides/sofaboot-sample-standard/target/boot/sofaboot-sample-standard-web-0.0.1-SNAPSHOT-executable.jar