#!/bin/bash
#
# This script can be used to interact with kolla via ansible.

function find_base_dir {
    local real_path=$(python -c "import os;print(os.path.realpath('$0'))")
    local dir_name="$(dirname "$real_path")"
    if [[ ${dir_name} == "/usr/bin" ]]; then
        BASEDIR=/usr/share/kolla
    elif [[ ${dir_name} == "/usr/local/bin" ]]; then
        BASEDIR=/usr/local/share/kolla
    else
        BASEDIR="${dir_name}/.."
    fi
}

function process_cmd {
    echo "$ACTION : $CMD"
    $CMD
    if [[ $? -ne 0 ]]; then
        echo "Command failed $CMD"
        exit 1
    fi
}

function usage {
    cat <<EOF
Usage: $0 COMMAND [options]

Options:
    --inventory, -i <inventory_path> Specify path to ansible inventory file
    --playbook, -p <playbook_path>   Specify path to ansible playbook file
    --help, -h                       Show this usage information
    --tags, -t <tags>                Only run plays and tasks tagged with these values

Commands:
    prechecks    Do pre-deployment checks for hosts
    deploy       Deploy and start all kolla containers
    post-deploy  Do post deploy on deploy node
    pull         Pull all images for containers (only pulls, no runnnig container changes)
EOF
}

ARGS=$(getopt -o hi:p:t: -l help,inventory:,playbook: --name "$0" -- "$@") || { usage >&2; exit 2; }
eval set -- "$ARGS"

find_base_dir

INVENTORY="${BASEDIR}/ansible/inventory/all-in-one"
PLAYBOOK="${BASEDIR}/ansible/site.yml"
EXTRA_OPTS="-e @/etc/kolla/globals.yml -e @/etc/kolla/passwords.yml"

while [ "$#" -gt 0 ]; do
    case "$1" in

    (--inventory|-i)
            INVENTORY="$2"
            shift 2
            ;;

    (--playbook|-p)
            PLAYBOOK="$2"
            shift 2
            ;;
    (--tags|-t)
            EXTRA_OPTS="$EXTRA_OPTS --tags $2"
            shift 2
            ;;

    (--help|-h)
            usage
            shift
            exit 0
            ;;

    (--)
            shift
            break
            ;;

    (*)
            echo "error"
            exit 3
            ;;
esac
done

case "$1" in

(prechecks)
        ACTION="Pre-deployment checking"
        PLAYBOOK="${BASEDIR}/ansible/prechecks.yml"
        ;;
(deploy)
        ACTION="Deploying Playbooks"
        EXTRA_OPTS="$EXTRA_OPTS -e action=deploy"
        ;;
(post-deploy)
        ACTION="Post-Deploying Playbooks"
        PLAYBOOK="${BASEDIR}/ansible/post-deploy.yml"
        ;;
(pull)
        ACTION="Pulling Docker images"
        EXTRA_OPTS="$EXTRA_OPTS -e action=pull"
        ;;
(upgrade)
        ACTION="Upgrading OpenStack Environment"
        EXTRA_OPTS="$EXTRA_OPTS -e action=upgrade"
        ;;

(*)     usage
        exit 0
        ;;
esac

CMD="ansible-playbook -i $INVENTORY $EXTRA_OPTS $PLAYBOOK"
process_cmd