UrlsWorker/installAndRun.sh

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# This script installs and runs the project.
# It also sets the "max-heap-size", depending on the machine's memory.
# For error-handling, we cannot use the "set -e" since: it has problems https://mywiki.wooledge.org/BashFAQ/105
# So we have our own function, for use when a single command fails.
handle_error () {
echo -e "$1"; exit $2
}
# Change the working directory to the script's directory, when running from another location.
cd "${0%/*}" || handle_error "Could not change-dir to this script's dir!" 1
justRun=0
avoidReInstallingPublicationsRetriever=0
if [[ $# -eq 1 ]]; then
justRun=$1
elif [[ $# -eq 2 ]]; then
justRun=$1
avoidReInstallingPublicationsRetriever=$2
elif [[ $# -gt 2 ]]; then
echo -e "Wrong number of arguments given: ${#} (more than 2)\nPlease execute it like: script.sh <justRun: 0 | 1> <avoidReInstallingPublicationsRetriever: 0 | 1>"; exit 2
fi
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gradleVersion="8.1.1"
if [[ justRun -eq 0 ]]; then
if [[ avoidReInstallingPublicationsRetriever -eq 1 ]]; then
if [[ ! -f ./libs/publications_retriever-1.0-SNAPSHOT.jar ]]; then
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echo -e "\n\nThe required \"PublicationsRetriever\" software has not been installed yet, thus the script will override the user-defined value of \"avoidReInstallingPublicationsRetriever\" to FALSE..\n\n"
avoidReInstallingPublicationsRetriever=0; # In case the jar-file does not exists, then make sure we follow the normal procedure, independently from what the user requested.
fi
fi
if [[ avoidReInstallingPublicationsRetriever -eq 0 ]]; then
if [ ! -d libs ]; then
mkdir libs || handle_error "The directory \"libs\" could not be created! Exiting.." 3
fi
cd libs || exit 4
git clone https://github.com/LSmyrnaios/PublicationsRetriever.git # We assume there is no previously source-code here, if so, it will be overwritten.
# Keep a backup of the previous JAR file, if it exists.
if [ -f ./publications_retriever-1.0-SNAPSHOT.jar ]; then
mv ./publications_retriever-1.0-SNAPSHOT.jar ./publications_retriever-1.0-SNAPSHOT_BACKUP.jar
fi
cd PublicationsRetriever && sudo apt install -y maven && mvn clean install
# Copy the created JAR file to the top libs directory.
cp target/publications_retriever-1.0-SNAPSHOT.jar ../publications_retriever-1.0-SNAPSHOT.jar
# Delete the directory with the source-code.
cd ../ && rm -rf PublicationsRetriever
# Clean, (re)build and run the project.
cd ../
fi
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# Install the specified Gradle-build-tool version, if it does not exist.
if [[ ! -d /opt/gradle/gradle-${gradleVersion} ]]; then
wget https://services.gradle.org/distributions/gradle-${gradleVersion}-bin.zip
echo -e "\nAsking for sudo, in order to install 'gradle'..\n"
sudo mkdir /opt/gradle
sudo apt install -y unzip && sudo unzip -d /opt/gradle gradle-${gradleVersion}-bin.zip
#ls /opt/gradle/gradle-${gradleVersion} # For debugging installation
fi
export PATH=/opt/gradle/gradle-${gradleVersion}/bin:$PATH
# Update the max-heap-size based on the machine's physical memory.
machine_memory_mb=$(grep MemTotal /proc/meminfo | awk '{print $2}' | xargs -I {} echo "scale=4; {}/1024" | bc) # It returns the size in MB.
max_heap_size_mb=$(echo "($machine_memory_mb - 896)/1" | bc) # Leave 896 MB to the system (the "()/1" is used to take the floor value).
# Now, we replace the "-Xmx" parameter inside the "./build.gradle" file, with "-Xmx${max_heap_size}m"
echo -e "\n\nThe max-heap-size (-Xmx) will be set to: ${max_heap_size_mb}m\n\n"
sed -i "s/'-Xmx[0-9]\+[gm]'/'-Xmx${max_heap_size_mb}m'/g" ./build.gradle
gradle wrapper --gradle-version=${gradleVersion} --distribution-type=bin
#gradle tasks # For debugging installation
#gradle -v # For debugging installation
gradle clean build
else
export PATH=/opt/gradle/gradle-${gradleVersion}/bin:$PATH # Make sure the gradle is still accessible (it usually isn't without the "export").
fi
gradle bootRun