makedeb

#!/bin/bash
# Created on: 27/07/2021
# Authors: Davi Barreto, Otávio Guerra
# Version: 1.0

PKG_NAME="airflow-service"
VERSION=`sed -rn 's/Version:[[:blank:]]*[0-9]+:([0-9.-]+)[[:blank:]]*$/\1/p' debian-files/control 2>/dev/null`
ARCH=$(uname -p)

WORKING_DIR=$(pwd)
DEBIAN_DIR="${WORKING_DIR}/deb"

SERVICE_PATH="/etc/systemd/system"
SERVICE_DIR="${DEBIAN_DIR}${SERVICE_PATH}"

PROJECT_PATH="/var/airflow-service"
PROJECT_DIR="${DEBIAN_DIR}${PROJECT_PATH}"

AIRFLOW_HOME="/airflow"
AIRFLOW_DIR="${DEBIAN_DIR}${AIRFLOW_HOME}/dags"

# create dest dirs
create_dirs()
{
    echo '##### Criando diretórios... #####'
    echo ''

    mkdir -p ${DEBIAN_DIR}/DEBIAN

    mkdir -p ${AIRFLOW_DIR}

    mkdir -p ${SERVICE_DIR}

    mkdir -p ${PROJECT_DIR}

    # copy deb files
    cp -a ${WORKING_DIR}/debian-files/* ${DEBIAN_DIR}/DEBIAN
    return 0
}

# copy and check return value
safe_cp()
{
    cp "$@"

    if [ $? -ne 0 ]; then
        echo "'$PKG_NAME': makedeb error when copying file: 'cp $@'"
        # remove arquivos de build
        remove_temp_files
        exit 1
    fi

    return $?
}

# copy file to destiny
copy_files()
{
    echo '##### Copying files... #####'
    echo ''

    safe_cp -a service/airflow.service ${SERVICE_DIR}
    safe_cp -a airflow/dags/hello-world-dag.py ${AIRFLOW_DIR}
    return $?
}

# create the .deb
create_deb()
{
    echo '##### Creating package deb... #####'
    echo ''

    dpkg-deb -b ${DEBIAN_DIR} ${PKG_NAME}_${VERSION}.deb
    return $?
}

# remove temp directory
remove_deb_files()
{
    echo '##### Removing deb generation temp files... #####'
    echo ''

    rm -Rf ${DEBIAN_DIR}
    return $?
}

# Main Body
# Creating Dirs
create_dirs
if [ $? -ne 0 ] ; then echo "'$PKG_NAME': makedeb error when creating directories" && exit 1; fi

# Copying Files
copy_files
if [ $? -ne 0 ] ; then echo "'$PKG_NAME': makedeb error when copying files" && exit 1; fi

# Creating deb package
create_deb
if [ $? -ne 0 ] ; then echo "'$PKG_NAME': makedeb error when creating .deb" && exit 1; fi

# Removing deb generation temp files
remove_deb_files
if [ $? -ne 0 ] ; then echo "'$PKG_NAME': makedeb error when removing deb generation temp files" && exit 1; fi

exit 0