install

#!/bin/bash
#
# Use Simple CLient SDK and Client and capture Performance metrics of SIP audio sessions.
# Install al the required dependencies for SIP custom monitor using SIP Client SDK and client.

# Exit on any subcommand failure.
set -e

# Set global variables to use.
red="\033[0;31m"
green="\033[0;32m"
yellow="\033[0;33m"
no_color="\033[0m"
prerequisites=("python" "pip" "yum")
yum_packages=("gcc" "openssl-devel" "epel-release" "python-wheel"
  "gmp-devel" "mpfr-devel" "libmpc-devel" "python-devel" "python-zope-interface"
  "libvpx-devel" "gcc-c++" "libsqlite3x-devel" "libv4l-devel" "alsa-lib-devel"
  "git" "libvpx" "libuuid" "sqlite" "pkgconfig" "openssl" "alsa-lib" "python-gmpy2")
pip_packages=("cython" "dnspython" "lxml" "python-gnutls" "python-otr" "python-application"
  "twisted" "python-dateutil" "greenlet" "python-cjson")
git_packages=("python-eventlib" "python-xcaplib" "python-msrplib" "python-sipsimple" "sipclients")

################################################################################
# Handle error and print to stderr.
# Arguments:
#   Error details.
# Output:
#   Writes metric to stderr.
################################################################################
error_handling(){
  echo "[ERROR]: $*" >&2
}

################################################################################
# Check if prerequisites are installed.
# Arguments:
#   package name to check its installation.
#   Total number of prerequisites.
#   Current counter of the prerequisite from total.
# Output:
#   Throws error if if prerequisite is not installed to stderr.
################################################################################
check_prerequisites(){
  prerequisite_name="$1"
  total_prerequisites="$2"
  count_of_prerequisites="$3"

  printf "\n${green}[${count_of_prerequisites}/${total_prerequisites}] pre-requisites: Checking ${prerequisite_name} installation.${no_color}\n"
  if [[  "$(command -v ${prerequisite_name})" == "/dev/null" ]] || [[ -z "$(command -v ${prerequisite_name})" ]]; then
    printf "\n${red}${prerequisite_name} is not installed.${no_color}\n"
    error_handling "Please install the required prerequisite to continue with the installation."
    exit -1
  fi

}

################################################################################
# Function to install packages using sudo and yum.
# Arguments:
#   package name for installation.
#   Total number of packages.
#   Current counter of the packages from total.
# Output:
#   Writes after installing on the stdout.
################################################################################
install_from_yum(){
  package_name="$1"
  total_packages="$2"
  count_of_current_package="$3"

  printf "\n${green}[${count_of_current_package}/${total_packages}] Installing: ${package_name}${no_color}\n"
  sudo yum -y install ${package_name}
}

################################################################################
# Function to install packages using pip.
# Arguments:
#   package name for installation.
#   Total number of packages.
#   Current counter of the packages from total.
# Output:
#   Writes after installing on the stdout.
################################################################################
install_from_pip(){
  pip_package_name="$1"
  pip_total_packages="$2"
  pip_current_counter="$3"

  printf "\n${green}[${pip_current_counter}/${pip_total_packages}] Installing: ${pip_package_name}${no_color}\n"
  yes | pip install -U ${pip_package_name}
}

################################################################################
# Function to install packages using git.
# Arguments:
#   package name for installation.
#   Total number of packages.
#   Current counter of the packages from total.
# Output:
#   Writes after installing on the stdout.
################################################################################
install_from_git(){
  clone_url_parameter="$1"
  git_total_packages="$2"
  git_current_counter="$3"
  git_repo_url="https://github.com/AGProjects/${clone_url_parameter}.git"

  printf "\n${green}[${git_current_counter}/${git_total_packages}] Cloning and Installing: ${git_repo_url}${no_color}\n"
  if [[ -d ${clone_url_parameter} ]]; then
    cd ${clone_url_parameter}
    git pull --all
    sudo python setup.py install
  else
    git clone ${git_repo_url}
    cd ${clone_url_parameter}
    sudo python setup.py install
  fi

  cd ..
}


# Check for prerequisites before begining with installation.
printf "\n${yellow}Checking pre-requisites.${no_color}\n"
count=1
for prerequisites in "${prerequisites[@]}"; do
  check_prerequisites ${prerequisites} ${#prerequisites[@]} ${count}
  count=$((${count} + 1))
done

# Install all the dependent packages with yum.
printf "\n${yellow}Installing required packages using yum.${no_color}\n"
count=1
for yum_packages in "${yum_packages[@]}"; do
  install_from_yum ${yum_packages} ${#yum_packages[@]} ${count}
  count=$((${count} + 1))
done

# installing ffmpeg separately due to parameters.
printf "\n${green}Installing: ffmpeg ffmpeg-devel${no_color}\n"
sudo yum localinstall -y --nogpgcheck https://download1.rpmfusion.org/free/el/rpmfusion-free-release-7.noarch.rpm
sudo yum install -y ffmpeg ffmpeg-devel

# Install all the dependent packages with pip.
printf "\n${yellow}Installing required packages using pip.${no_color}\n"
count=1
for pip_packages in "${pip_packages[@]}"; do
  install_from_pip ${pip_packages} ${#pip_packages[@]} ${count}
  count=$((${count} + 1))
done

# Install Simple Client SDK and Client with git.
printf "\n${yellow}Installing Simple Client SDK with Client and dependencies using Git.${no_color}\n"
count=1
for git_packages in "${git_packages[@]}"; do
  install_from_git ${git_packages} ${#git_packages[@]} ${count}
  count=$((${count} + 1))
done