bootstrap

#!/bin/sh

. /lib/lsb/init-functions

#general configuration
_PROJECT_NAME="autoscaling-engine"

_DEFAULT_PROPERTIES_FILE="${_PROJECT_BASE}/etc/ase.properties"

_BASE="/opt"
_PROJECT_ROOT_BASE="${_BASE}/openbaton"
_PROJECT_BASE="${_PROJECT_ROOT_BASE}/${_PROJECT_NAME}"

_PROJECT_PROPERTIES_FOLDER="/etc/openbaton"
_PROJECT_PROPERTIES_FILE="${_PROJECT_PROPERTIES_FOLDER}/ase.properties"
_PROJECT_LOG_FOLDER="/var/log/openbaton"

#debian configuration
_DEB_NAME="openbaton-ase"

#git configuration
_PROJECT_REPO="https://github.com/openbaton/autoscaling-engine.git"
_SCRIPT_NAME="autoscaling-engine.sh"
_TAG="develop"
#_TAG="tags/1.0.0"

_USER="$(id -un 2>/dev/null || true)"

checkBinary () {
  if command -v $1 >/dev/null 2>&1 ; then
      log_success_msg "Checking for '$1'"
      return 0
  else
      log_failure_msg "Checking for '$1'"
      return 1
  fi
}

_ex='sh -c'
if [ "$_USER" != 'root' ]; then
    if checkBinary sudo; then
        _ex='sudo -E sh -c'
    elif checkBinary su; then
        _ex='su -c'
    fi
fi

# Checks if the function call of setting properties got the expected values
# $1: description shown for entering value (mandatory)
# $2: configuration property (mandatory)
# $3: default configuration value (optional)
checkPropertyConfiguration () {
    # Checking if the description is given
    if [ -z "$1" ]; then
      echo "-Parameter #1 is not set. Please provide the description of this configration parameter."
      return 1
    # Checking if the configuration parameter is given
    elif [ -z "$2" ]; then
      echo "-Parameter #2 is not set. Please provide the configration parameter."
      return 1
    fi
    # Reading the value from the user
    export _VALUE
    read -p "$1 [$3]:" _VALUE
    # Checking if at least one of both values is defined (either default or defined)
    if [ -z "${_VALUE}" ] && [ -z "${3}" ]; then
        log_failure_msg "You have to provide a value for \"$2\" since there is no default"
        checkPropertyConfiguration "$1" "$2" "$3"
    elif [ ! -z "${_VALUE}" ]; then
        setProperty $2 $_VALUE
        log_success_msg "Set parameter \"$2\" to value \"$_VALUE\""
    elif [ ! -z "${3}" ]; then
        setProperty $2 $3
        log_success_msg "Kept parameter \"$2\" as the default value \"$3\""
    fi
}

# Set the properties in the configuration file (no further checks)
# $1: configuration property (mandatory)
# $2: configuration property value (mandatory)
setProperty () {
    $_ex 'sed -i "s|^'"$1"'=.*|'"$1"'="'$2'"|g" '"$_PROJECT_PROPERTIES_FILE"
}

#property configuration
configureProperties () {
    echo "The properties file to change is: $_PROJECT_PROPERTIES_FILE"

    echo "NFVO configuration"
    checkPropertyConfiguration "Enter the IP of the NFVO" "nfvo.ip" "localhost"
    checkPropertyConfiguration "Enter the port of the NFVO" "nfvo.port" "8080"
    checkPropertyConfiguration "Enter the username to authorize against the NFVO" "nfvo.username" "admin"
    checkPropertyConfiguration "Enter the password to authorize against the NFVO" "nfvo.password" ""

    echo "RabbitMQ configuration"
    checkPropertyConfiguration "Enter the host address where the RabbitMQ server is running" "autoscaling.rabbitmq.brokerIp" "localhost"
    checkPropertyConfiguration "Enter the username used to authorize against the RabbitMQ server" "spring.rabbitmq.username" ""
    checkPropertyConfiguration "Enter the password used to authorize against the RabbitMQ server" "spring.rabbitmq.password" ""
}

askForConfiguration () {
   echo "$1"
   echo "1) Yes"
   echo "2) No (default)"
   read -p "Your choice: " choice
   case $choice in
       1) return 0;;
       2) return 1;;
       *) return 1;;
   esac

}

######################
#### Using DEBIAN ####
######################

#adding apt repository
#1. add key
#2. add repo
#3. update repositories
addAptRepository () {
    # Add Open Baton Public Key to the APT keys
    $_ex 'wget -O - http://get.openbaton.org/keys/public.gpg.key | apt-key add -'

    # Add Open Baton Repo to sources.list file
    result=$(grep /etc/apt/sources.list -e "deb http://get.openbaton.org/repos/apt/debian/ stable main" | wc -l)
    if [ ${result} -eq 0 ]; then
        $_ex 'echo "\ndeb http://get.openbaton.org/repos/apt/debian/ stable main" >> /etc/apt/sources.list'
    fi
    $_ex 'apt-get update'
}

#isntalls the project
installProject () {
    $_ex 'apt-get install -y '"$_PROJECT_NAME"
}

#debian re-start of the project
restartProject () {
    instance=$(ps aux | grep -v grep | grep "$_PROJECT_NAME" | grep jar | wc -l)
    if [ ${instance} -ne 0 ] ; then
        echo "restarting $_PROJECT_NAME ..."
        "$_PROJECT_NAME" restart
    else
        echo "starting $_PROJECT_NAME ..."
        "$_PROJECT_NAME" start
    fi

}

#########################################
########## Using source code ############
#########################################

prereq () {
  $_ex 'apt-get update; apt-get -y install openjdk-7-jdk screen git'
  log_success_msg "Installed required software"
}

checkEnvironment () {
  _error=0
  echo "Checking environment..."
  checkBinary java; _error=$(($_error + $?))
  checkBinary javac; _error=$(($_error + $?))
  checkBinary curl; _error=$(($_error + $?))
  checkBinary screen; _error=$(($_error + $?))
  checkBinary wget; _error=$(($_error + $?))
  if [ "0" != "$_error" ]; then
    log_failure_msg "FAILED. Please install the above mentioned binaries."
    exit 1
  fi
}

#create the base where the project is cloned to
createBase () {
    echo "Creating the ${_PROJECT_NAME} root base folder \"${_PROJECT_ROOT_BASE}\""
    if [ -d "${_PROJECT_ROOT_BASE}" ]; then
        if [ -d "${_PROJECT_BASE}" ]; then
            echo "Base folder \"${_PROJECT_BASE}\" exists already"
            echo "How to proceed?"
            echo "1) Keep it"
            echo "2) Remove it (default)"
            read -p "Your choice: " choice
            case $choice in
                1) return 0;;
                2) $_ex 'rm -rf '"$_PROJECT_BASE"
                log_success_msg "Removed old base folder";;
                *) $_ex 'rm -rf '"$_PROJECT_BASE"
                log_success_msg "Removed old base folder";;
            esac
        fi
    else
       $_ex 'mkdir -p '"$_PROJECT_ROOT_BASE"
       log_success_msg "Created root base folder \"${_PROJECT_ROOT_BASE}\""
    fi
    $_ex 'chown -R '"$_USER $_PROJECT_ROOT_BASE"
    log_success_msg "Configured permissions of root base folder \"${_PROJECT_ROOT_BASE}\""
}

createLogFolder () {
    # create log folder and give permission
    if [ -d "${_PROJECT_LOG_FOLDER}" ]; then
        echo "Log folder \"${_PROJECT_LOG_FOLDER}\" exists already"
        echo "How to proceed?"
        echo "1) Keep it (default)"
        echo "2) Remove it"
        read -p "Your choice: " choice
        case $choice in
            1) return 0;;
            2) $_ex 'rm -rf '"$_PROJECT_LOG_FOLDER"
            log_success_msg "Removed log folder \"${_PROJECT_LOG_FOLDER}\""
            $_ex 'mkdir -p '"$_PROJECT_LOG_FOLDER"
            log_success_msg "Created log folder \"${_PROJECT_LOG_FOLDER}\"";;
            *) return 0;;
        esac
    else
        $_ex 'mkdir -p '"$_PROJECT_LOG_FOLDER"
        log_success_msg "Created log folder \"${_PROJECT_LOG_FOLDER}\""
    fi
    $_ex 'chown -R '"$_USER $_PROJECT_LOG_FOLDER"
    log_success_msg "Configured permissions of log folder \"${_PROJECT_LOG_FOLDER}\""
}

cloneProject () {
    echo "Cloning ${_PROJECT_NAME} to ${_PROJECT_BASE} ..."
    oldpath=`pwd`
    cd "${_PROJECT_ROOT_BASE}"
    git clone --recursive "${_PROJECT_REPO}" "${_PROJECT_NAME}"
    cd $oldpath
}

checkoutVersion () {
    echo "Choose version:"
    echo "1) ${_TAG} (default)"
    echo "2) master"
    echo "3) develop"
    read -p "Your choice: " choice
    case $choice in
        1) version=${_TAG};;
        2) version=master;;
        3) version=develop;;
        *) version=${_TAG};;
    esac
    oldpath=`pwd`
    cd "${_PROJECT_BASE}"
    git checkout ${version}
    cd $oldpath
}

copyConfigFiles () {
    if [ ! -d "${_PROJECT_PROPERTIES_FOLDER}" ]; then
        $_ex 'mkdir -p '"${_PROJECT_PROPERTIES_FOLDER}"
        log_success_msg "created properties folder"
    else
        log_warning_msg "Properties folder \"${_PROJECT_PROPERTIES_FOLDER}\" exists already"    
    fi
    $_ex 'cp '"${_DEFAULT_PROPERTIES_FILE} ${_PROJECT_PROPERTIES_FILE}"
    log_success_msg "Copied default configuration file \"${_DEFAULT_PROPERTIES_FILE}\" to \"${_PROJECT_PROPERTIES_FOLDER}\""
    if [ -d "${_PROJECT_BASE}/etc" ]; then
        $_ex 'cp '"${_PROJECT_BASE}/etc/* ${_PROJECT_PROPERTIES_FOLDER}"
        log_success_msg "Copied files from \"${_PROJECT_BASE}/etc\" to \"${_PROJECT_PROPERTIES_FOLDER}\""
    fi
}

compileProject () {
    echo "Compiling ${_PROJECT_NAME}"
    oldpath=`pwd`
    cd "${_PROJECT_BASE}"
    ./${_SCRIPT_NAME} compile
    if [ $? -ne 0 ]; then
        echo "ERROR: The compilation of ${_PROJECT_NAME} failed"
        exit 1
    fi
    cd $oldpath
}

startProject () {
    echo "Starting ${_PROJECT_NAME}"
    oldpath=`pwd`
    cd ${_PROJECT_BASE}
    ./${_SCRIPT_NAME} start
    cd $oldpath
}

#################
### INSTALLER ###
#################

useDebian () {
    #Add apt repository
    addAptRepository
    #Install project
    installProject
    #configure properties
    configureProperties
    #start or restart project
    restartProject
}

useSourceCode () {
    prereq
    checkEnvironment
    createBase
    createLogFolder
    cloneProject
    checkoutVersion
    copyConfigFiles
    configureProperties
    compileProject
    startProject
}

bootstrap () {
    echo "How to install ${_PROJECT_NAME}?"
    echo "1) debian (default)"
    echo "2) source code via git"
    read -p "Your choice: " choice
    case $choice in
        1) useDebian;;
        2) useSourceCode;;
        *) useDebian;;
    esac
    echo "$_PROJECT_NAME is up and running now..."
}

bootstrap