ansible-version.j2

#!/bin/bash
set -e

ANSIBLE_BIN_PATH="{{ ANSIBLE_BIN_PATH }}"
ANSIBLE_BASEDIR="{{ ANSIBLE_BASEDIR }}"
ANSIBLE_SELECTED_VERSION="{{ ANSIBLE_SELECTED_VERSION }}"

#Function: help
print_help() {
echo """$0 
Usage:
    $0 installed
    $0 versions
    $0 path <version>
    $0 set <version>

Options:
    installed                   Show available installed ansible virtualenv
    versions                    Show current virtualenv version 
    path <version>              Print binary path of specifc version
    set <version>               Set selected version for ansible virtualenv 
"""
exit 0
}

show_installed(){
    ansible_link="$(readlink ${ANSIBLE_BASEDIR}/bin/ansible)"
    version="$(echo $ansible_link | sed 's|'"$ANSIBLE_BASEDIR"'||g ; s|/venv/bin/||g ; s|ansible||g; s|/||g')"
    echo "installed version: \"$version\""
}

show_versions(){
    cd $ANSIBLE_BASEDIR
    for version in *
    do
        [[ $version =~ ^(ansible-version)$ ]] && continue
        [[ $version =~ ^(bin)$ ]] && continue
        versions_list+="'${version}' "
    done
    echo "$versions_list"
}

# Verify version 
verify_version(){
    versions_list="$(show_versions)"
    if ! [[ ${versions_list} == *"'${ANSIBLE_SELECTED_VERSION}'"* ]]; then
        echo "The desired version \"${ANSIBLE_SELECTED_VERSION}\" is not in the version list."
        echo "available version: $versions_list"
        exit 1
    fi
    if ! [ -d $ANSIBLE_BASEDIR/${ANSIBLE_SELECTED_VERSION}/venv/bin/ ]; then
        echo "Your virtualenv seems to be not installed or incorrect reference. \"$ANSIBLE_BASEDIR/${ANSIBLE_SELECTED_VERSION}/venv/bin/\" is not a valid directory"
        exit 1
    fi
}

print_path(){
  verify_version
  echo "${ANSIBLE_BASEDIR}/${ANSIBLE_SELECTED_VERSION}/venv/bin/"
}

setup_links(){
    verify_version

    for bin in ansible ansible-doc ansible-galaxy ansible-playbook ansible-pull ansible-vault
    do
        echo "Ensuring symlink $ANSIBLE_BASEDIR/${ANSIBLE_SELECTED_VERSION}/venv/bin/$bin :is pointing to ${ANSIBLE_BASEDIR}/bin/${bin}"
        ln -sf $ANSIBLE_BASEDIR/${ANSIBLE_SELECTED_VERSION}/venv/bin/$bin ${ANSIBLE_BASEDIR}/bin/${bin}
    done
}

case $1 in
"installed")
  show_installed
  ;;
"versions")
  echo "current installed version: $(show_versions)"
  ;;
"path")
  [ -z "$2" ] && echo "path requires a version as an argument." && exit 1
  version="$2"
  export ANSIBLE_SELECTED_VERSION="$2"
  print_path
  ;;
"set")
  version="$2"
  [ -z "$2" ] && echo "set requires a version as an argument." && exit 1
  export ANSIBLE_SELECTED_VERSION="$2"
  setup_links
  ;;
'')
  print_help
  ;;
*)
  echo "$0: Unkown option '$1'"
  print_help
  ;;
esac

exit 0