Installing Mule 4 EE on Raspberry Pi

install_mule.sh

#!/bin/bash

# See also: https://github.com/rajprins/mule-rpi/blob/master/install-mule4EE.sh

function bold {
    tput bold
    echo $1
    tput rmso
}

function introBanner {
    clear
    echo
    echo "┌───────────────────────────────────────────────────────────────────────┐"
    echo "│ (\_/)    M U L E   R U N T I M E   I N S T A L L E R                  │"
    echo "│ /   \    Mule 4 EE runtime installer for Raspbian Stretch/Buster      │"
    echo "└───────────────────────────────────────────────────────────────────────┘"
}

function preInstallationOps {
    echo
    echo "This script will download, extract and install the Mule 4 EE runtime and"
    echo "several other required packages. Some actions require root access using"
    echo "the 'sudo' command. Your password might be asked."
    sudo -v
}

function setPermissionToPiUser {
    if [[ -d ${BASE_DIR} ]]; then
        sudo chown -R pi:pi ${BASE_DIR}
    fi
}

function installPackages {
    echo;bold ">>> Installing required packages"
    sudo apt-get update
    sudo apt-get -y install openjdk-8-jdk-headless unzip
}

function createUser {
    echo;bold ">>> Preparing user '${MULE_USER}'"
    if ! [ `id -u ${MULE_USER} 2>/dev/null || echo -1` -ge 0 ]; then 
        echo "Creating user '${MULE_USER}'"
        sudo useradd -s /bin/bash -d /home/${MULE_USER} -U -G sudo ${MULE_USER}
        sudo mkdir /home/${MULE_USER}
        sudo cp /home/pi/.bashrc /home/${MULE_USER}/
        sudo cp /home/pi/.profile /home/${MULE_USER}/
        sudo chown ${MULE_USER}:${MULE_USER} /home/${MULE_USER}
   sudo passwd ${MULE_USER} <<EOF
${MULE_PASS}
${MULE_PASS}
EOF
   echo "User created. Default password for user '${MULE_USER}' is '${MULE_PASS}'."
    else
        echo "User '${MULE_USER}' already exists. No action required."
    fi
}

function createBaseDir {
    echo;bold ">>> Creating installation directory"
    if ! [[ -d ${BASE_DIR} ]] ; then
        echo "Creating directory ${BASE_DIR}"
        sudo mkdir ${BASE_DIR}
    else
        echo "Target directory ${BASE_DIR} already exists. No action required."
    fi
    cd ${BASE_DIR}
}

function downloadMule {
    cd ${BASE_DIR}
    echo;bold ">>> Downloading Mule EE runtime"
    sudo wget https://s3.amazonaws.com/new-mule-artifacts/mule-ee-distribution-standalone-${MULE_VERSION}.zip
    echo;bold ">>> Extracting Mule EE runtime. Please wait..."
    sudo unzip -q ${BASE_DIR}/mule-ee-distribution-standalone-${MULE_VERSION}.zip
    echo;bold ">>> Create/update symbolic link to current installed version"
    ln -sf "$(basename ${MULE_HOME})" current
    echo;bold ">>> Add Mule bin to PATH variable"
    if ! sudo grep -q "${BASE_DIR}/bin" /home/${MULE_USER}/.bashrc 2> /dev/null; then
      echo "" | sudo tee -a /home/${MULE_USER}/.bashrc
      echo "# Add Mule bin to PATH" | sudo tee -a /home/${MULE_USER}/.bashrc
      echo "PATH=\"\${PATH}:${BASE_DIR}/current/bin\"" | sudo tee -a /home/${MULE_USER}/.bashrc
    fi
}

function downloadServiceWrapper {
    cd ${BASE_DIR}
    echo;bold ">>> Downloading Tanuki wrapper"
    sudo wget https://download.tanukisoftware.com/wrapper/${WRAPPER_VERSION}/wrapper-linux-armhf-32-${WRAPPER_VERSION}.tar.gz
    echo;echo ">>> Extracting Tanuki wrapper"
    sudo tar zxf wrapper-linux-armhf-32-${WRAPPER_VERSION}.tar.gz
}

function patchMuleServiceWrapper {
    echo;bold ">>> Patching Mule 4 runtime libraries"
    sudo cp ${BASE_DIR}/wrapper-linux-armhf-32-${WRAPPER_VERSION}/lib/libwrapper.so ${MULE_HOME}/lib/boot/libwrapper-linux-armhf-32.so
    sudo cp ${BASE_DIR}/wrapper-linux-armhf-32-${WRAPPER_VERSION}/lib/wrapper.jar ${MULE_HOME}/lib/boot/wrapper-${WRAPPER_VERSION}.jar
    sudo cp ${BASE_DIR}/wrapper-linux-armhf-32-${WRAPPER_VERSION}/bin/wrapper ${MULE_HOME}/lib/boot/exec/wrapper-linux-armhf-32
}

function setMuleConfiguration {
    echo;bold ">>> Modifying wrapper.conf configuration file"
    sudo sed -i 's/wrapper.java.initmemory=1024/wrapper.java.initmemory=256/g' ${MULE_HOME}/conf/wrapper.conf
    sudo sed -i 's/wrapper.java.maxmemory=1024/wrapper.java.maxmemory=512/g' ${MULE_HOME}/conf/wrapper.conf

    echo;bold ">>> Modifying mule launch script"
    sudo sed -i 's/case "$PROC_ARCH" in/case "$DIST_ARCH" in\n   'armv7l')\n        echo "Armhf architecture detected"\n        DIST_ARCH="armhf"\n        DIST_BITS="32"\n        break;;/' ${MULE_HOME}/bin/mule
}

function setPermissions {
    echo;bold ">>> Setting permissions for user '${MULE_USER}' on ${BASE_DIR}"
    sudo chown -R ${MULE_USER}:${MULE_USER} ${BASE_DIR}
}

function postInstallationOps {
    echo;bold ">>> Cleaning up"
    cd ${BASE_DIR}
    sudo rm -r wrapper-linux-armhf-32-${WRAPPER_VERSION}*
    sudo rm mule-ee-distribution-standalone-${MULE_VERSION}.zip
    echo
    echo "All done. Log in as user '${MULE_USER}' and start Mule runtime using this command:"
    bold "${MULE_HOME}/bin/mule start"
    echo "Do not forget to install a license, otherwise this installation will behave as a 30-day trial version."
}

##############################################################################
# Main
##############################################################################


MULE_VERSION=4.3.0
WRAPPER_VERSION=3.5.37
BASE_DIR=/opt/mule
MULE_HOME=${BASE_DIR}/mule-enterprise-standalone-${MULE_VERSION}
MULE_USER=mule
MULE_PASS=mule

introBanner
preInstallationOps
installPackages
createUser
createBaseDir
downloadMule
downloadServiceWrapper
patchMuleServiceWrapper
setMuleConfiguration
setPermissions
postInstallationOps

Install Raspian and exute the following command with the pi user:

pi@raspberrypi:~ $ wget -O - https://gist.githubusercontent.com/mark-veenstra/a8d99db0c9e5709b32e69961b1b93129/raw/9b4525b6979cbc65d9ede473e378214bce8cd8af/install_mule.sh | bash